WO2009122608A1 - アクティブマトリクス基板、液晶パネル、液晶表示装置、液晶表示ユニット、テレビジョン受像機 - Google Patents
アクティブマトリクス基板、液晶パネル、液晶表示装置、液晶表示ユニット、テレビジョン受像機 Download PDFInfo
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- WO2009122608A1 WO2009122608A1 PCT/JP2008/069735 JP2008069735W WO2009122608A1 WO 2009122608 A1 WO2009122608 A1 WO 2009122608A1 JP 2008069735 W JP2008069735 W JP 2008069735W WO 2009122608 A1 WO2009122608 A1 WO 2009122608A1
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
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- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Definitions
- the present invention relates to an active matrix substrate in which a plurality of pixel electrodes are provided in one pixel region, and a liquid crystal display device (pixel division method) using the same.
- a plurality of subpixels provided in one pixel are controlled to have different luminances, and the area levels of these subpixels are controlled.
- a liquid crystal display device pixel division method, for example, see Patent Document 1 that displays a halftone by a tone.
- a pixel region is between two adjacent gate bus lines 112, and a pixel is formed at the upper end of the pixel region (a portion adjacent to the gate bus line).
- the electrode 121 a is arranged, the pixel electrode 121 b is arranged in the middle stage, the pixel electrode 121 c is arranged at the lower end of the pixel region (the part adjacent to the adjacent gate bus line), and the pixel electrode 121 a and the pixel electrode 121 c are connected to the transistor 116.
- the control electrode 118 connected to the source lead-out wiring 119 led out from the source electrode 116s is overlapped with the pixel electrode 112b through the insulating layer, and the middle-stage pixel electrode 121b is connected to the upper-lower pixel.
- the electrodes 121a and 121c are capacitively coupled (capacitive coupling type pixel division method).
- each of the sub-pixels corresponding to the pixel electrodes 121a and 121c can be a bright sub-pixel, and the sub-pixel corresponding to the pixel electrode 121b can be a dark sub-pixel.
- Halftone can be displayed by area gradation of dark sub-pixel (1).
- the pixel electrode 121b is in an electrically floating state, a DC voltage is applied to the liquid crystal layer of the pixel due to a jump in charge or the like (the temporal integration value of the pixel electrode potential deviates from the counter potential), and the pixel is burned. There is a fear.
- the pixel electrode 121b is arranged in the middle stage away from the gate bus line, and the pixel electrode 121b is surrounded by a shield pattern 146 extending from the auxiliary capacitor bus line 113. As a result, it is necessary to dispose pixel electrodes for bright subpixels at the upper and lower ends of the pixel region (portions adjacent to the gate bus line). The arrangement of pixel electrodes is limited.
- a pixel electrode for a bright subpixel is arranged at each of the upper and lower ends of the pixel region as in the active matrix substrate of FIG. 36, two adjacent pixels are arranged in a liquid crystal display device (conventional liquid crystal display device) having the same.
- One of the bright subpixels belonging to one of the two is adjacent to one of the bright subpixels belonging to the other, and the distance between the two adjacent bright subpixels is smaller than the distance between the bright subpixels belonging to the same pixel.
- the two bright subpixels belonging to different pixels may be mistakenly viewed as if belonging to the same pixel, resulting in an unnatural display.
- the pixel electrode 136a (pixel electrode for dark pixel) which is in an electrically floating state is arranged at the upper end (portion adjacent to the gate bus line 112) of the pixel region.
- the periphery of 136a is surrounded by a shield pattern 143 extending from the auxiliary capacitor bus line 113, the gate bus line 112 and the shield pattern 143 formed in the same layer are close to each other, and both are short-circuited. There is a fear.
- the present invention has been made in view of the above problems, and an object thereof is to increase the degree of freedom of arrangement of each pixel electrode in a pixel division type (capacitive coupling type) liquid crystal display device.
- the active matrix substrate includes a scanning signal line, a switching element connected to the scanning signal line, and a data signal line, and a first pixel region connected to the data signal line via the switching element.
- An active matrix substrate provided with first and second pixel electrodes and a third pixel electrode connected to the first pixel electrode via a capacitor, wherein the pixel region is separated by two scanning signal lines across the pixel region.
- the first pixel electrode is disposed on one side and the second pixel electrode is disposed on the other side.
- the active matrix substrate includes a scanning signal line, a data signal line, a first transistor connected to the scanning signal line and the data signal line, and a first transistor connected to the scanning signal line and the data signal line.
- An active matrix substrate having two transistors, wherein the first pixel electrode connected to the first transistor, the second pixel electrode connected to the second transistor, and the capacitor are connected to each other in one pixel region via the capacitor.
- a third pixel electrode connected to the first pixel electrode, the first and second pixel electrodes are arranged to face each other across a gap, and the scanning signal line overlaps the gap. It can also be expressed as crossing an area.
- the degree of freedom of the arrangement of the pixel electrodes can be increased. For example, if each of the first and second pixel electrodes is arranged adjacent to the scanning signal line, the pixel electrode corresponding to the dark subpixel is separated from the scanning signal line, and the pixel electrode corresponding to the bright subpixel is placed in the center of the pixel region. Can be arranged. That is, in the liquid crystal display device provided with the present active matrix substrate, bright subpixels belonging to different pixels can be prevented from being adjacent to each other, thereby enabling natural display as compared with the conventional liquid crystal display device. It becomes.
- the present active matrix substrate may be configured such that the first and third pixel electrodes are arranged on one of the two portions.
- a configuration may also be provided that includes a first storage capacitor wiring extending portion that extends to the outside and joins the first storage capacitor wiring again.
- the first storage capacitor wiring extending portion may be configured to overlap the first pixel electrode.
- the first storage capacitor wiring extending portion may be provided for each pixel region, and the first storage capacitor wiring extending portions adjacent in the column direction may be connected to each other.
- the first storage capacitor wiring may be provided corresponding to two adjacent pixel regions.
- the active matrix substrate includes a first storage capacitor wiring that overlaps a part of the edge (periphery) of the third pixel electrode, a first sub-wiring that forms a storage capacitor with the first pixel electrode, and a first storage capacitor. Between the wiring and the first sub-wiring, two transfer electrodes connected to both wirings are provided per pixel area, and the first sub-wiring and the two transfer electrodes are the remaining part of the edge of the third pixel electrode. It is also possible to adopt a configuration in which they are arranged so as to overlap with each other or to pass outside.
- the interlayer insulating film provided under each pixel electrode includes at least part of a portion overlapping with the third pixel electrode and the first storage capacitor line, and the third pixel electrode and the first storage capacitor line extending portion. Further, at least a part of the overlapping portion may be thinned.
- the interlayer insulating film is composed of an inorganic insulating film and a thicker organic insulating film.
- the interlayer insulating film includes at least a part overlapping with the third pixel electrode and the first storage capacitor wiring, the third pixel electrode, The organic insulating film may be removed from at least a part of the overlapping portion with the one storage capacitor wiring extending portion.
- the active matrix substrate includes a first storage capacitor line that overlaps a part of the edge (periphery) of the third pixel electrode, and a first shield electrode that is connected to the first storage capacitor line through a contact hole.
- the one shield electrode may be formed in the same layer as the third pixel electrode and may be extended so as to pass outside the remaining portion of the edge in plan view.
- the interlayer insulating film provided below each pixel electrode may be composed of an inorganic insulating film and a thicker organic insulating film.
- the active matrix substrate includes a first coupling capacitor electrode electrically connected to the first pixel electrode, and the first coupling capacitor electrode is connected to the third pixel electrode via an interlayer insulating film provided under each pixel electrode. It can also be set as the structure which overlaps.
- the switching element includes a first transistor, and a lead-out wiring led out from one conduction terminal of the first transistor and the first pixel electrode are connected via a contact hole. It can also be set as the structure connected with the coupling capacity electrode in the same layer.
- the switching element includes the first transistor, and the lead-out wiring led out from the one conduction terminal of the first transistor and the first pixel electrode are connected through the contact hole, and the first through the contact hole.
- the relay wiring connected to one pixel electrode and the first coupling capacitor electrode may be connected in the same layer.
- the interlayer insulating film may be configured such that at least a part of the portion overlapping with the third pixel electrode and the first coupling capacitor electrode is thin.
- the interlayer insulating film is composed of an inorganic insulating film and a thicker organic insulating film, but the organic insulating film is removed from at least a part of the portion overlapping with the third pixel electrode and the first coupling capacitance electrode. It can also be set as the structure currently made.
- the present active matrix substrate may include a fourth pixel electrode connected to the second pixel electrode via a capacitor, and the second and fourth pixel electrodes may be disposed on one of the two portions. .
- the second storage capacitor wiring that overlaps with a part of the edge (periphery) of the fourth pixel electrode and the second storage capacitor wiring branching from the second storage capacitor wiring in plan view and overlap with the rest of the edge may be provided.
- the second storage capacitor line extending portion may be configured to overlap the second pixel electrode.
- the second storage capacitor wiring extending portion may be provided for each pixel region, and the second storage capacitor wiring extending portions adjacent in the column direction may be connected to each other.
- the second storage capacitor wiring may be provided corresponding to two adjacent pixel regions.
- the active matrix substrate includes a second storage capacitor wiring that overlaps a part of the edge (periphery) of the fourth pixel electrode, a second sub-wiring that forms a storage capacitor with the second pixel electrode, and a second storage capacitor. Between the wiring and the second sub-wiring, two transfer electrodes connected to both wirings are provided per pixel area. The second storage capacitor wiring and the two transfer electrodes are connected to the edge of the fourth pixel electrode. It can also be set as the structure arrange
- the interlayer insulating film provided under each pixel electrode includes at least part of a portion overlapping with the fourth pixel electrode and the second storage capacitor line, and the fourth pixel electrode and the second storage capacitor line extending portion. Further, at least a part of the overlapping portion may be thinned.
- the interlayer insulating film is composed of an inorganic insulating film and an organic insulating film thicker than this, but at least part of the portion overlapping with the fourth pixel electrode and the second storage capacitor wiring, the fourth pixel electrode, The organic insulating film may be removed from at least a part of the overlapping portion with the two storage capacitor wiring extending portions.
- the active matrix substrate includes a second storage capacitor line that overlaps a part of the edge (periphery) of the fourth pixel electrode, and a second shield electrode that is connected to the second storage capacitor line through a contact hole.
- the two shield electrodes may be formed in the same layer as the fourth pixel electrode, and may be configured to extend so as to pass outside the remaining portion of the edge in plan view.
- the interlayer insulating film provided under each pixel electrode may be composed of an inorganic insulating film and a thicker organic insulating film.
- the active matrix substrate includes a second coupling capacitor electrode electrically connected to the second pixel electrode, and the second coupling capacitor electrode is connected to the fourth pixel electrode through an interlayer insulating film provided under each pixel electrode. It can also be set as the structure which overlaps.
- the switching element includes the second transistor, and the lead-out wiring led out from the one conduction terminal of the second transistor and the second pixel electrode are connected through the contact hole. It can also be set as the structure connected with the coupling capacity electrode in the same layer.
- the switching element includes the second transistor, and the lead-out wiring led out from the one conduction terminal of the second transistor and the second pixel electrode are connected through the contact hole, and the first through the contact hole.
- the relay wiring connected to the two pixel electrodes and the second coupling capacitor electrode may be connected in the same layer.
- the interlayer insulating film may be configured such that at least a part of the portion overlapping the fourth pixel electrode and the second coupling capacitor electrode is thin.
- the interlayer insulating film is composed of an inorganic insulating film and a thicker organic insulating film, but the organic insulating film is removed from at least part of the portion overlapping the fourth pixel electrode and the second coupling capacitance electrode. It can also be set as the structure currently made.
- the switching element further includes a second transistor, and the lead-out wiring led out from one conduction terminal of the second transistor and the second pixel electrode are connected via a contact hole. You can also.
- the present active matrix substrate may be configured such that a connecting electrode for connecting both electrodes is provided in the same layer as the first and second pixel electrodes.
- the fourth pixel electrode connected to the second pixel electrode through the capacitor, the first coupling capacitor electrode electrically connected to the first pixel electrode, and the second pixel electrode electrically A second coupling capacitor electrode, the first coupling capacitor electrode overlaps the third pixel electrode through an interlayer insulating film provided under each pixel electrode, and the second coupling capacitor electrode A structure that overlaps with the fourth pixel electrode through the interlayer insulating film, and an overlapping area of the first coupling capacitor electrode and the third pixel electrode is different from an overlapping area of the second coupling capacitor electrode and the fourth pixel electrode. It can also be.
- the scanning signal line may be configured to cross the center of the pixel region.
- the present active matrix substrate includes a fourth pixel electrode connected to the second pixel electrode through a capacitor, and the first and third pixel electrodes are disposed on one of the two portions, and the second and second pixels are disposed on the other.
- the fourth pixel electrode may be disposed, and the gap between the first pixel electrode and the third pixel electrode and the gap between the second pixel electrode and the fourth pixel electrode may function as an alignment regulating structure.
- the present active matrix substrate may include a fifth pixel electrode connected to the third pixel electrode through a capacitor.
- it may be configured to include a fourth pixel electrode connected to the second pixel electrode via a capacitor and a sixth pixel electrode connected to the fourth pixel electrode via a capacitor.
- a fourth pixel electrode connected to the second pixel electrode via a capacitor is provided in the pixel region.
- the first and third pixel electrodes are scanned.
- the second and fourth pixel electrodes are separated from the scanning signal line by a slit-like boundary including a part forming 45 degrees and a part forming 135 degrees with respect to the signal line. It can also be set as the structure divided
- a first coupling capacitor electrode that is electrically connected to the first pixel electrode and overlaps the third pixel electrode, and a second coupling that is electrically connected to the second pixel electrode and overlaps the fourth pixel electrode.
- the first coupling capacitance electrode at 45 degrees or 135 degrees with respect to the scanning signal line when viewed in plan, and when viewed in plan, the second coupling capacitance is provided.
- At least a part of the electrodes may be configured to form 225 degrees or 315 degrees with respect to the scanning signal line.
- a part of the first pixel electrode is disposed between the third pixel electrode and the scanning signal line, and the fourth pixel electrode and the scanning signal line A configuration in which a part of the second pixel electrode is arranged between them may be used.
- the active matrix substrate includes a storage capacitor wiring that overlaps the pixel region and the preceding pixel region, and a storage capacitor wiring that overlaps the pixel region and the pixel region of the next stage.
- a storage capacitor line extending portion extends from one of these two storage capacitor lines so as to overlap an edge along the data signal line of the third pixel electrode, and adjacent to the data signal line of the fourth pixel electrode from the other.
- the storage capacitor wiring extending portion may be extended so as to overlap the edge along the data signal line.
- the liquid crystal panel includes the active matrix substrate and a counter substrate that is opposite to the active matrix substrate and includes an alignment regulating structure, and a portion that forms 45 degrees or 135 degrees with respect to the scanning signal line of the first coupling capacitor electrode. Is disposed under the alignment regulating structure, and a portion of 225 degrees or 315 degrees with respect to the scanning signal line of the second coupling capacitor electrode is disposed under the alignment regulating structure. To do.
- This liquid crystal panel includes the above active matrix substrate.
- the present liquid crystal display unit includes the liquid crystal panel and a driver.
- the present liquid crystal display device includes the liquid crystal display unit and a light source device.
- the television receiver includes the liquid crystal display device and a tuner unit that receives a television broadcast.
- the degree of freedom of arrangement of each pixel electrode can be increased. For example, if each of the first and second pixel electrodes is arranged adjacent to the scanning signal line, the pixel electrode corresponding to the dark subpixel is separated from the scanning signal line, and the pixel electrode corresponding to the bright subpixel is placed in the center of the pixel region. Can be arranged. That is, in the liquid crystal display device provided with the present active matrix substrate, bright subpixels belonging to different pixels can be prevented from being adjacent to each other, thereby enabling natural display as compared with the conventional liquid crystal display device. It becomes.
- FIG. 1 is a circuit diagram illustrating a configuration of a liquid crystal panel according to a first embodiment.
- 4 is a plan view showing a specific example of the liquid crystal panel according to Embodiment 1.
- FIG. It is arrow sectional drawing of FIG. 3 is a timing chart illustrating a driving method of a liquid crystal display device including the liquid crystal panel of FIG. 1.
- FIG. 5 is a schematic diagram showing a display state for each frame when the driving method of FIG. 4 is used.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 7 is a cross-sectional view taken along the arrow in FIG. 6.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to
- FIG. 17 is a timing chart illustrating a method for driving a liquid crystal display device including the liquid crystal panel of FIG. 16. It is a schematic diagram which shows the display state for every flame
- FIG. 18 is a schematic diagram illustrating a display state for each frame when the driving method (data signal line and scanning signal line driving method) of FIG. 17 is used in a liquid crystal display device including the liquid crystal panel of FIG. 19.
- FIG. 6 is a circuit diagram illustrating a configuration of a liquid crystal panel according to a second embodiment. 10 is a plan view showing a specific example of a liquid crystal panel according to Embodiment 2.
- FIG. 10 is a plan view illustrating a specific example of a liquid crystal panel according to a third embodiment.
- FIG. 26 is a timing chart illustrating a driving method of a liquid crystal display device including the liquid crystal panel of FIG. 25. It is a schematic diagram which shows the display state for every flame
- FIG. 26 is a block diagram illustrating functions of the present television receiver. It is a disassembled perspective view which shows the structure of this television receiver.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment.
- FIG. 6 is a plan view illustrating another specific example of the liquid crystal panel according to the first embodiment. It is a top view which shows the structure of the conventional liquid crystal panel. It is a top view which shows the structure of the conventional liquid crystal panel.
- the extending direction of the scanning signal lines is hereinafter referred to as the row direction.
- the scanning signal line may extend in the horizontal direction or in the vertical direction. Needless to say.
- FIG. 1 is an equivalent circuit diagram showing a part of the liquid crystal panel according to the first embodiment.
- this liquid crystal panel includes a data signal line (15x ⁇ 15X) extending in the column direction (up and down direction in the figure) and a scanning signal line (16x ⁇ 16y) extending in the row direction (left and right direction in the figure). ), Pixels (100 to 103) arranged in the row and column directions, storage capacitor lines (18p, 18q, 18r), and common electrodes (counter electrodes) com, and the structure of each pixel is the same.
- the pixel column including the pixels 100 and 101 and the pixel column including the pixels 102 and 103 are adjacent to each other, and the pixel row including the pixels 100 and 102 and the pixel row including the pixels 101 and 103 are adjacent to each other. is doing.
- one data signal line and one scanning signal line are provided corresponding to one pixel, and one storage capacitor line is provided corresponding to two pixels adjacent in the column direction. Is provided.
- four pixel electrodes are provided in one pixel, and the four pixel electrodes 17c, 17a, 17b, and 17d provided in the pixel 100, and the four pixel electrodes 17g, 17e, 17f, and the like provided in the pixel 101 are provided. 17h are arranged in a row, and four pixel electrodes 17C, 17A, 17B, and 17D provided in the pixel 102 and four pixel electrodes 17G, 17E, 17F, and 17H provided in the pixel 103 are arranged in a row.
- the pixel electrodes 17a and 17c are connected via the coupling capacitor Cac, the pixel electrodes 17b and 17d are connected via the coupling capacitor Cbd, and the pixel electrode 17a is connected to the scanning signal line 16x.
- 12a is connected to the data signal line 15x
- the pixel electrode 17b is connected to the data signal line 15x via the transistor 12b connected to the scanning signal line 16x.
- the pixel electrode 17c, the storage capacitor line 18p, and its extended portion A storage capacitor Chc is formed between the pixel electrode 17a and the extended portion of the storage capacitor wiring 18p, and a storage capacitor Cha is formed between the pixel electrode 17b and the extended portion of the storage capacitor wiring 18q.
- a liquid crystal capacitor Clc is formed between the pixel electrode 17c and the common electrode com
- a liquid crystal capacitor Cla is formed between the pixel electrode 17a and the common electrode com
- a liquid crystal capacitor Clb is formed between the pixel electrode 17b and the common electrode com.
- a liquid crystal capacitor Cld is formed between the pixel electrode 17d and the common electrode com.
- the pixel electrodes 17e and 17g are connected via the coupling capacitor Ceg, the pixel electrodes 17f and 17h are connected via the coupling capacitor Cfh, and the pixel electrode 17e is connected.
- the pixel electrode 17f is connected to the data signal line 15x via the transistor 12f connected to the scanning signal line 16y, and the pixel electrode 17f is connected to the data signal line 15x via the transistor 12f connected to the scanning signal line 16y.
- a storage capacitor Chg is formed between 17g, the storage capacitor wiring 18q, and the extended portion thereof, and a storage capacitor Che is formed between the pixel electrode 17e and an extended portion of the storage capacitor wiring 18q.
- a storage capacitor Chf is formed between the extending portion 18r and the pixel electrode 17h, the storage capacitor wiring 18r, and its extension. Holding capacitance Chh is formed between the parts.
- a liquid crystal capacitor Clg is formed between the pixel electrode 17g and the common electrode com, a liquid crystal capacitor Cle is formed between the pixel electrode 17e and the common electrode com, and a liquid crystal capacitor Clf is formed between the pixel electrode 17f and the common electrode com.
- a liquid crystal capacitance Clh is formed between the pixel electrode 17h and the common electrode com.
- the pixel electrodes 17A and 17C are connected through the coupling capacitor CAC, the pixel electrodes 17B and 17D are connected through the coupling capacitor CBD, and the pixel electrode 17A is connected.
- the pixel electrode 17B is connected to the data signal line 15X via the transistor 12B connected to the scanning signal line 16x, and the pixel electrode 17B is connected to the data signal line 15X via the transistor 12B connected to the scanning signal line 16x.
- a storage capacitor ChC is formed between 17C, the storage capacitor wiring 18p, and the extended portion thereof.
- a storage capacitor ChA is formed between the pixel electrode 17A and the extended portion of the storage capacitor wiring 18p, and the pixel electrode 17B and the storage capacitor wiring are formed.
- a storage capacitor ChB is formed between the extended portion of 18q and the pixel electrode 17D, the storage capacitor wiring 18q, and its extension. Holding capacitance ChD is formed between the parts.
- a liquid crystal capacitor ClC is formed between the pixel electrode 17C and the common electrode com
- a liquid crystal capacitor ClA is formed between the pixel electrode 17A and the common electrode com
- a liquid crystal capacitor ClB is formed between the pixel electrode 17B and the common electrode com.
- a liquid crystal capacitor ClD is formed between the pixel electrode 17D and the common electrode com.
- scanning is sequentially performed, and the scanning signal lines 16x and 16y are sequentially selected.
- the pixel electrode 17a is connected to the data signal line 15x (via the transistor 12a), and the pixel electrode 17c is connected to the data signal line 15x (the transistor 12a and the pixel electrode 17a are connected).
- the pixel electrode 17b is connected to the data signal line 15x (via the transistor 12b), and the pixel electrode 17d is capacitively coupled to the data signal line 15x (via the transistor 12b and the pixel electrode 17b).
- is Va and com potential Vcom).
- the sub-pixel including the pixel electrode 17a and the sub-pixel including the pixel electrode 17b are the bright sub-pixel having substantially the same luminance, the sub-pixel including the pixel electrode 17c, and the sub-pixel including the pixel electrode 17d, respectively. Each becomes a dark sub-pixel having substantially the same luminance.
- the sub-pixel including the pixel electrode 17A and the sub-pixel including the pixel electrode 17B are each a bright sub-pixel having substantially the same luminance
- the sub-pixel including the pixel electrode 17C and the sub-pixel including the pixel electrode 17D are substantially each. Dark sub-pixels with the same luminance.
- the sub-pixel including the pixel electrode 17e and the sub-pixel including the pixel electrode 17f are the bright sub-pixel having substantially the same luminance and the sub-pixel including the pixel electrode 17g, respectively.
- the sub-pixel including the pixel electrode 17h is a dark sub-pixel having substantially the same luminance
- the sub-pixel including the pixel electrode 17E and the sub-pixel including the pixel electrode 17F are respectively the bright sub-pixel and the pixel electrode having substantially the same luminance.
- the sub-pixel including 17G and the sub-pixel including the pixel electrode 17H are dark sub-pixels having substantially the same luminance.
- each pixel is divided into two parts (regions) by a single scanning signal line crossing the pixel, and one part includes a pixel electrode connected to a transistor and a capacitor connected thereto.
- the pixel electrode to be connected is arranged so that the former is adjacent to the scanning signal line and the latter is adjacent to one of the two edges along the row direction of the pixel, and the other part includes a pixel electrode connected to the transistor
- the pixel electrodes connected to this through a capacitor are arranged so that the former is adjacent to the scanning signal line and the latter is adjacent to the other of the two edges.
- one storage capacitor line is provided corresponding to (overlapping) two adjacent pixel rows, and the storage capacitor line overlaps with a part of the edge (periphery) of the pixel electrode.
- a storage capacitor wiring extending portion that extends so as to overlap the remaining portion of the edge or to pass outside thereof and joins the storage capacitor wiring again is connected.
- the data signal line 15x is provided along the pixel 100 and the pixel 101
- the data signal line 15X is provided along the pixel 102 and the pixel 103
- the scanning signal line 16x is provided for each of the pixels 100 and 102.
- the scanning signal line 16y crosses the center of each of the pixels 101 and 103 across the center.
- the storage capacitor wiring 18p is provided so as to overlap the pixel row including the pixels 100 and 102 and the upper pixel row in the drawing, and overlaps the pixel row including the pixels 100 and 102 and the pixel row including the pixels 101 and 103.
- the storage capacitor wiring 18q is provided
- the storage capacitor wiring 18r is provided so as to overlap the pixel row including the pixels 101 and 103 and the lower pixel row in the figure.
- a rectangular pixel electrode 17a connected to the transistor 12a and a rectangular pixel electrode 17c connected to the transistor 12a via a capacitor are disposed on the upper side of the scanning signal line 16x crossing the center.
- the pixel electrode 17a is arranged adjacent to the scanning signal line 16x, and the pixel electrode 17c is arranged so as to be adjacent to one of the two edges along the row direction of the pixel 100, while the transistor 12b is arranged below the scanning signal line 16x in the drawing.
- a rectangular pixel electrode 17b connected to the rectangular pixel electrode 17d and a rectangular pixel electrode 17d connected to the rectangular pixel electrode 17d are adjacent to the scanning signal line 16x, and the pixel electrode 17d extends along the row direction of the pixel 100.
- the source electrode 8a and the drain electrode 9a of the transistor 12a and the source electrode 8b and the drain electrode 9b of the transistor 12b are formed on the scanning signal line 16x.
- the source electrode 8a is connected to the data signal line 15x.
- the drain electrode 9a is connected to the drain lead wiring 27a, and the drain lead wiring 27a is connected to the coupling capacitor electrode 37a formed in the same layer and connected to the pixel electrode 17a through the contact hole 11a. It overlaps with the pixel electrode 17c through an insulating film, thereby forming a coupling capacitor Cac (see FIG. 1) between the pixel electrodes 17a and 17c.
- the source electrode 8b is connected to the data signal line 15x.
- the drain electrode 9b is connected to the drain lead wiring 27b.
- the drain lead wiring 27b is connected to the coupling capacitor electrode 37b formed in the same layer and connected to the pixel electrode 17b through the contact hole 11b. It overlaps with the pixel electrode 17d via an insulating film, thereby forming a coupling capacitor Cbd (see FIG. 1) between the pixel electrodes 17b and 17d.
- the storage capacitor line 18p overlaps with a part of the edge (outer periphery) of the pixel electrode 17c (the two parts along the row direction that are far from the scanning signal line 16x), thereby both (the storage capacitor line 18p and the pixel electrode). Most of the storage capacitor Chc (see FIG. 1) is formed in the overlapping portion Kc of 17c). Further, the storage capacitor line 18p is branched from the storage capacitor line 18p in plan view and overlaps with the rest of the edge of the pixel electrode 17c, or extends so as to pass outside thereof, and is again connected to the storage capacitor line 18p.
- the storage capacitor line extending portion 18c to be joined is connected, and thereby the electrically floating pixel electrode 17c is electrically shielded by the storage capacitor line 18p and the storage capacitor line extending portion 18c. Further, the storage capacitor wiring extending portion 18c and the pixel electrode 17a overlap each other, so that a storage capacitor Cha (see FIG. 1) is formed in the overlapping portion Ka of both (the storage capacitor wiring extending portion 18c and the pixel electrode 17a). Similarly, the storage capacitor line 18q overlaps a part of the edge (periphery) of the pixel electrode 17d (the two parts along the row direction that are far from the scanning signal line 16x), so that both (the storage capacitor line 18q and the pixel) Most of the storage capacitor Chd (see FIG.
- the storage capacitor line 18q is branched from the storage capacitor line 18p in plan view and overlaps with the rest of the edge of the pixel electrode 17d or extends so as to pass outside thereof, and is again connected to the storage capacitor line 18q.
- the storage capacitor line extending portion 18d to be joined is connected, and thereby the electrically floating pixel electrode 17d is electrically shielded by the storage capacitor wire 18q and the storage capacitor line extending portion 18d.
- the storage capacitor wiring extending portion 18d and the pixel electrode 17b overlap each other, whereby a storage capacitor Chb (see FIG. 1) is formed in the overlapping portion Kb of both (the storage capacitor wiring extending portion 18d and the pixel electrode 17b).
- a part of the storage capacitor Chc is also formed at the overlapping portion of the storage capacitor line extending portion 18c and the pixel electrode 17c.
- a part of the storage capacitor Chd is also formed at the overlapping portion of the storage capacitor line extending portion 18d and the pixel electrode 17d.
- a rectangular pixel electrode 17e connected to the transistor 12e and a rectangular pixel electrode 17g connected to the transistor 12e via a capacitor are arranged on the upper side of the scanning signal line 16y crossing the center in the drawing.
- the electrode 17e is arranged adjacent to the scanning signal line 16y, and the pixel electrode 17g is arranged to be adjacent to one of two edges along the row direction of the pixel 101, while the transistor 12f is arranged on the lower side of the scanning signal line 16y in the figure.
- a rectangular pixel electrode 17f to be connected and a rectangular pixel electrode 17h connected to the pixel electrode 17f via a capacitor are adjacent to the scanning signal line 16y and the pixel electrode 17h is adjacent to the other of the two edges. Are arranged to do.
- a source electrode 8e and a drain electrode 9e of the transistor 12e and a source electrode 8f and a drain electrode 9f of the transistor 12f are formed on the scanning signal line 16y.
- the source electrode 8e is connected to the data signal line 15x.
- the drain electrode 9e is connected to the drain lead wiring 27e, and the drain lead wiring 27e is connected to the coupling capacitor electrode 37e formed in the same layer and connected to the pixel electrode 17e through the contact hole 11e. It overlaps with the pixel electrode 17g through the insulating film, thereby forming a coupling capacitor Ceg (see FIG. 1) between the pixel electrodes 17e and 17g.
- the source electrode 8f is connected to the data signal line 15x.
- the drain electrode 9f is connected to the drain lead wiring 27f, and the drain lead wiring 27f is connected to the coupling capacitance electrode 37f formed in the same layer and connected to the pixel electrode 17f through the contact hole 11f. It overlaps with the pixel electrode 17h via an insulating film, thereby forming a coupling capacitance Cfh (see FIG. 1) between the pixel electrodes 17f and 17h.
- the storage capacitor line 18q overlaps with a part of the edge (outer periphery) of the pixel electrode 17g, most of the storage capacitor Chg (see FIG. 1) is present in the overlapping portion Kg of both (the storage capacitor line 18q and the pixel electrode 17g). It is formed. Furthermore, the storage capacitor wiring 18q is branched from the storage capacitor wiring 18q in a plan view and overlaps with the rest of the edge of the pixel electrode 17g or extends so as to pass outside thereof, and is again connected to the storage capacitor wiring 18q. The storage capacitor line extending portion 18g to be joined is connected, whereby the electrically floating pixel electrode 17g is electrically shielded by the storage capacitor wire 18q and the storage capacitor line extending portion 18g.
- the storage capacitor wiring extending portion 18g and the pixel electrode 17e overlap each other, so that the storage capacitor Che (see FIG. 1) is formed at the overlapping portion Ke between the two (the storage capacitor wiring extending portion 18g and the pixel electrode 17e).
- the storage capacitor line 18r overlaps a part of the edge (outer periphery) of the pixel electrode 17h, a large amount of the storage capacitor Chh (see FIG. 1) is present in the overlapping portion Kh of both (the storage capacitor line 18r and the pixel electrode 17h). Is formed.
- the storage capacitor line 18r is branched from the storage capacitor line 18r in a plan view and overlaps with the rest of the edge of the pixel electrode 17h or extends so as to pass outside thereof, and is again formed into the storage capacitor line 18r.
- the storage capacitor line extending portions 18h to be joined are connected, and thereby the electrically floating pixel electrode 17h is electrically shielded by the storage capacitor wiring 18r and the storage capacitor wire extending portion 18h.
- the storage capacitor wiring extending portion 18h and the pixel electrode 17f overlap each other, whereby a storage capacitor Chf (see FIG. 1) is formed in the overlapping portion Kf of both (the storage capacitor wiring extending portion 18h and the pixel electrode 17f).
- a part of the storage capacitor Chg is also formed at the overlapping portion of the storage capacitor wiring extending portion 18g and the pixel electrode 17g.
- a part of the storage capacitor Chh is also formed at the overlapping portion of the storage capacitor wiring extending portion 18h and the pixel electrode 17h.
- FIG. 3 is a cross-sectional view taken along the arrow in FIG.
- the liquid crystal panel 5a includes an active matrix substrate 3, a color filter substrate 30 facing the active matrix substrate 3, and a liquid crystal layer 40 disposed between the substrates (3, 30).
- the scanning signal line 16x, the storage capacitor wiring 18p, and the storage capacitor wiring extending portion 18c are formed on the glass substrate 31, and the inorganic gate insulating film 22 is formed so as to cover them.
- the inorganic gate insulating film 22 On top of the inorganic gate insulating film 22, there are a semiconductor layer 24 (i layer and n + layer), source electrodes 8a and 8b and drain electrodes 9a and 9b in contact with the n + layer, drain lead wires 27a and 27b, and coupling capacitance.
- An electrode 37a is formed, and an inorganic interlayer insulating film 25 is formed so as to cover them.
- Pixel electrodes 17a, 17b, and 17c are formed on the inorganic interlayer insulating film 25, and an alignment film (not shown) is formed so as to cover these (pixel electrodes 17a to 17c).
- the inorganic interlayer insulating film 25 is penetrated, whereby the pixel electrode 17b and the drain lead wiring 27b are connected.
- the coupling capacitor electrode 37a connected to the drain lead wiring 27a in the same layer overlaps the pixel electrode 17c through the inorganic interlayer insulating film 25, thereby forming the coupling capacitor Cac (see FIG. 1).
- the pixel electrode 17c overlaps the storage capacitor wiring 18p via the inorganic interlayer insulating film 25 and the inorganic gate insulating film 22, thereby forming a storage capacitor Chc (see FIG. 1).
- the black matrix 13 and the colored layer 14 are formed on the glass substrate 32, the common electrode (com) 28 is formed thereon, and an alignment film (not shown) is formed so as to cover this. Is formed.
- FIG. 4 is a timing chart showing a driving method of the present liquid crystal display device (normally black mode liquid crystal display device) provided with the liquid crystal panel shown in FIGS.
- Sv and SV indicate signal potentials supplied to two adjacent data signal lines (for example, 15x and 15X), respectively.
- Gx and Gy are gate-on pulse signals supplied to the scanning signal lines 16x and 16y.
- Va to Vd, VA to VD, and Ve to Vh represent the potentials of the pixel electrodes 17a to 17d, 17A to 17D, and 17e to 17h, respectively.
- the scanning signal lines are sequentially selected, the polarity of the signal potential supplied to the data signal lines is inverted every horizontal scanning period (1H), and the same number in each frame.
- the polarity of the signal potential supplied in the horizontal scanning period is inverted in units of one frame, and in the same horizontal scanning period, a signal potential having a reverse polarity is supplied to two adjacent data signal lines.
- the scanning signal lines are sequentially selected (for example, the scanning signal lines 16x and 16y are selected in this order), and one of the two adjacent data signal lines (for example, The data signal line 15x) is supplied with a positive polarity signal potential in the first horizontal scanning period (for example, including the writing period of the pixel electrodes 17a and 17b), and is supplied in the second horizontal scanning period (for example, the pixel electrode 17e).
- a negative polarity signal potential is supplied during the 17f writing period, and the other of the two data signal lines (for example, the data signal line 15X) is supplied with the first horizontal scanning period (for example, the pixel electrode 17A.
- a negative polarity signal potential is supplied to the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17E and 17F). It supplies a signal potential.
- the sub-pixel including the pixel electrode 17c (plus polarity) is a dark sub-pixel (hereinafter “dark”)
- the sub-pixel including the pixel electrode 17a (plus polarity) is a bright sub-pixel (hereinafter referred to as “sub-pixel”).
- “Bright”) the subpixel including the pixel electrode 17b (plus polarity) is “bright”
- the subpixel including the pixel electrode 17d (plus polarity) is “dark”, and includes the pixel electrode 17g (minus polarity).
- the scanning signal lines are sequentially selected (for example, the scanning signal lines 16x and 16y are selected in this order), and one of the two adjacent data signal lines (for example, the data signal line 15x) is the first.
- the negative polarity signal potential is supplied during the horizontal scanning period (for example, including the writing period of the pixel electrodes 17a and 17b), and the positive polarity is applied during the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17e and 17f).
- a signal potential is supplied, and the other of the two data signal lines (for example, the data signal line 15X) has a positive polarity signal in the first horizontal scanning period (for example, the writing period of the pixel electrodes 17A and 17B).
- a potential is supplied, and a negative polarity signal potential is supplied in the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17E and 17F).
- the sub-pixel including the pixel electrode 17c (minus polarity) is “dark”
- the sub-pixel including the pixel electrode 17a (minus polarity) is “bright”
- the pixel electrode 17b (minus polarity) is set.
- the subpixel including “bright”, the subpixel including the pixel electrode 17d (negative polarity) is “dark”
- the subpixel including the pixel electrode 17g (positive polarity) includes “dark”, and includes the pixel electrode 17e (positive polarity).
- the subpixel is “bright”, the subpixel including the pixel electrode 17f (plus polarity) is “bright”, the subpixel including the pixel electrode 17h (plus polarity) is “dark”, and the subpixel including the pixel electrode 17C (plus polarity) is included.
- the pixel is “dark”, the subpixel including the pixel electrode 17A (plus polarity) is “bright”, the subpixel including the pixel electrode 17B (plus polarity) is “bright”, and the subpixel including the pixel electrode 17D (plus polarity) is "Dark” and overall It is as shown in FIG 5 (b).
- the scanning signal line is arranged at the center of the pixel
- two pixel electrodes pixel electrodes corresponding to the bright subpixels
- Two pixel electrodes that are electrically floating are arranged at both ends of the pixel
- the storage capacitor wiring and the storage capacitor wiring extending portion are electrically floating while being separated from the scanning signal line. It can function as an electrical shield pattern for the two pixel electrodes.
- the bright subpixels belonging to different pixels can be connected to each other while preventing the dark subpixel burn-in as much as possible by suppressing the jumping of charges into the two pixel electrodes. Can be prevented from being adjacent to each other, and a more natural display than the conventional liquid crystal display device can be achieved.
- the drain lead-out wiring can be shortened, and the effect of reducing the disconnection rate and improving the aperture ratio can be obtained.
- the redundant effect of the storage capacitor wiring can be obtained by the storage capacitor wiring extending portion. For example, even if the storage capacitor wiring is disconnected between the part where the storage capacitor wiring extension part branches and the part where the storage capacitor wiring extension part merges, the storage capacitor wiring extension part becomes a bypass route and the part after the disconnection point A storage capacitor wiring signal (for example, a Vcom signal equal to the potential of the common electrode) can be sent to the portion.
- the polarity of the signal potential supplied to each data signal line is inverted every horizontal scanning period (1H), so that when the transistor is OFF between two adjacent pixels in the column direction.
- the direction of pulling in the potential is reversed, and flickering can be suppressed.
- by supplying a signal potential of opposite polarity to each of two adjacent data signal lines in the same horizontal scanning period the potential when the transistor is OFF between two adjacent pixels in the row direction. The retraction direction is reversed, and flickering can be suppressed.
- the interlayer insulating film may be a two-layer structure of an inorganic interlayer insulating film and a thick organic interlayer insulating film.
- effects such as reduction of various parasitic capacitances, prevention of short-circuiting between wirings, and reduction of pixel electrode tearing due to planarization can be obtained.
- the organic interlayer insulating film 26 is overlapped with the storage capacitor wiring and the pixel electrode, and the storage capacitor wiring is extended.
- the interlayer insulating film has a two-layer structure of an inorganic interlayer insulating film and a thick organic interlayer insulating film, the parasitic capacitance between the scanning signal line and the pixel electrode is reduced.
- FIG. 34 it is possible to improve the aperture ratio by overlapping the edges of the pixel electrodes 17a and 17b (first and second pixel electrodes) on the scanning signal line 16x.
- the pixel electrodes 17a and 17b are arranged to face each other with a gap therebetween, and the scanning signal line 16x crosses the pixel region 100 so as to overlap the gap when viewed in plan. .
- the inorganic interlayer insulating film 25, the organic interlayer insulating film 26, and the contact hole 11b of FIG. 7 can be formed as follows, for example. That is, after forming a transistor (TFT) and a data signal line, a mixed gas of SiH 4 gas, NH 3 gas and N 2 gas is used, and an inorganic interlayer made of SiNx having a thickness of about 3000 mm so as to cover the entire surface of the substrate. An insulating film 25 (passivation film) is formed by CVD. Thereafter, an organic interlayer insulating film 26 made of a positive photosensitive acrylic resin having a thickness of about 3 ⁇ m is formed by spin coating or die coating.
- photolithography is performed to form a penetrating portion of the organic interlayer insulating film 26 and various contact patterns. Further, using the patterned organic interlayer insulating film 26 as a mask, CF 4 gas and O 2 gas The inorganic interlayer insulating film 25 is dry-etched using a mixed gas. Specifically, for example, the penetration portion of the organic interlayer insulating film is half-exposed in the photolithography process so that the organic interlayer insulating film remains thin when development is completed, while the contact hole portion is By performing full exposure in the photolithography process, an organic interlayer insulating film is not left when development is completed.
- the organic interlayer insulating film 26 may be, for example, an insulating film made of an SOG (spin-on glass) material, and the organic interlayer insulating film 26 may be an acrylic resin, an epoxy resin, a polyimide resin, a polyurethane resin, or a novolac resin. , And at least one of siloxane resins may be included.
- FIG. 8 shows another specific example of the present liquid crystal panel.
- the liquid crystal panel 5b of FIG. 8 has a configuration in which the storage capacitor wiring extending portions adjacent in the column direction are connected to each other in the liquid crystal panel 5a of FIG.
- the storage capacitor wiring 18p includes a part of the edge of the pixel electrode 17c included in the pixel 100 and a part of the edge of the pixel electrode 17C included in the pixel 102 adjacent to the pixel 100 in the column direction. It overlaps with.
- the storage capacitor line 18p branches off from the storage capacitor line 18p and overlaps with the remaining portion of the edge of the pixel electrode 17c or extends so as to pass outside thereof, and then joins the storage capacitor line 18p again.
- An extending portion 18c and a storage capacitor wiring extending portion 18C that branches from the storage capacitor wiring 18p and overlaps with the remaining portion of the edge of the pixel electrode 17C or extends outside thereof and merges with the storage capacitor wiring 18p again.
- the storage capacitor line extending portions 18c and 18C are connected to each other under the data signal line 15X.
- the redundancy effect of the storage capacitor wiring in the liquid crystal panel 5a can be enhanced. For example, even if the storage capacitor wiring is disconnected at a portion where it intersects with the data signal line, two storage capacitor wiring extending portions adjacent to each other in the column direction connected to each other serve as a bypass route and are held in the portion after the disconnection portion.
- a capacitive wiring signal (for example, a Vcom signal) can be sent.
- the drain lead-out wiring is connected to the coupling capacitor electrode in the same layer, and the drain lead-out wiring and the pixel electrode are connected through the contact hole, but the present invention is not limited to this configuration.
- the drain lead-out wiring and the pixel electrode are connected via the contact hole, and the pixel electrode and the relay wiring connected to the coupling capacitor electrode in the same layer are connected to the contact hole. Can also be connected.
- the drain lead wire 27a drawn from the drain electrode 9a of the transistor 12a and the pixel electrode 17a are connected through the contact hole 11a and are connected to the coupling capacitor electrode 37a in the same layer.
- the relay wiring 57a and the pixel electrode 17a are connected via the contact hole 51a, and the coupling capacitance electrode 37a overlaps the pixel electrode 17c via the interlayer insulating film, thereby the coupling capacitance Cac between the pixel electrodes 17a and 17c. (See FIG. 1) is formed.
- the drain lead wire 27b drawn from the drain electrode 9b of the transistor 12b and the pixel electrode 17b are connected through the contact hole 11b, and the relay wire 57b and the pixel electrode 17b connected to the coupling capacitor electrode 37b in the same layer.
- the coupling capacitor electrode 37b overlaps the pixel electrode 17d via the interlayer insulating film, thereby forming a coupling capacitor Cbd (see FIG. 1) between the pixel electrodes 17b and 17d.
- the drain lead-out wiring (light shielding property) can be shortened compared to the liquid crystal panel 5a, so that the aperture ratio can be further increased.
- FIG. 10 shows still another specific example of the liquid crystal panel.
- the liquid crystal panel 5d in FIG. 10 is connected to the two pixel electrodes (pixel electrodes corresponding to the bright sub-pixels) adjacent to the scanning signal line through a connection electrode straddling the scanning signal line in the liquid crystal panel 5a in FIG. It has the structure made.
- a pixel electrode 17a adjacent to one side of the scanning signal line 16x and a pixel electrode 17b adjacent to the other side are connected via a connecting electrode 17ab straddling the scanning signal line 16x.
- a connecting electrode 17ab straddling the scanning signal line 16x.
- a pixel electrode 17e adjacent to one side of the scanning signal line 16y and a pixel electrode 17f adjacent to the other side are connected to each other via a connecting electrode 17ef straddling the scanning signal line 16y.
- liquid crystal panel 5d when one of the two transistors connected to the same scanning signal line does not function, when one of the two drain lead wires is disconnected, or when one of the two contact holes is defective (contact Even in the case of failure, a signal potential can be supplied from the data signal line to each of two pixel electrodes (pixel electrodes corresponding to the bright subpixels) adjacent to the scanning signal line.
- the connecting electrode is desirably arranged in the center of the pixel so that the influence from the data signal lines on both sides becomes equal.
- the interlayer insulating film in order to reduce the parasitic capacitance (Cgd) between the connection electrode and the scanning signal line, the interlayer insulating film has a two-layer structure of an inorganic interlayer insulating film and a thicker organic interlayer insulating film. (See FIG. 7).
- the pixel electrodes connected to the two transistors connected to the same scanning signal line are connected via the connecting electrode, one of these two transistors and the drain lead drawn from the two transistors are connected. It is also possible to delete the wiring and the contact hole connected to the drain lead-out wiring and to configure as shown in FIG.
- each of the four pixel electrodes in one pixel is rectangular, but the present invention is not limited to this.
- a pixel electrode having a right triangle shape and a trapezoidal pixel electrode are arranged on one side of the scanning signal line so that the former overlaps the storage capacitor wiring and the latter is adjacent to the scanning signal line.
- the storage capacitor wiring extending portion may be configured to extend so as to electrically shield the triangular pixel electrode.
- a trapezoidal pixel electrode 17a connected to the transistor 12a and a right triangle shape connected to the transistor 12a via a capacitor are arranged on the upper side of the scanning signal line 16x crossing the center.
- the pixel electrode 17 c is arranged so that the pixel electrode 17 a is adjacent to the scanning signal line 16 x and the pixel electrode 17 c is adjacent to one of the two edges along the row direction in the pixel 100.
- the edge of the pixel electrode 17c is composed of a portion along the data signal line 15x, a portion overlapping the storage capacitor wiring 18p, and a portion serving as a hypotenuse
- the edge of the pixel electrode 17a is a portion along the data signal line 15x.
- a portion along the scanning signal line 16x, a portion along the data signal line 15X, and a portion along a part of the edge of the pixel electrode 17c (a portion serving as a hypotenuse).
- a trapezoidal pixel electrode 17b connected to the transistor 12b and a right triangular pixel electrode 17d connected to the transistor 12b via a capacitor are connected, and the pixel electrode 17b is a scanning signal line.
- the pixel electrode 17d is arranged so as to be adjacent to the other of the two edges along the row direction in the pixel 100.
- the edge of the pixel electrode 17d is composed of a portion along the data signal line 15X, a portion overlapping the storage capacitor wiring 18q, and a portion serving as a hypotenuse, and the edge of the pixel electrode 17b is a portion along the scanning signal line 16x.
- the pixel electrode 17a and the pixel electrode 17b are arranged so as to be line-symmetric with respect to the scanning signal line 16x, and the pixel electrode 17c and the pixel electrode 17d are arranged so as to be line-symmetric with respect to the scanning signal line 16x. .
- the storage capacitor wiring 18p overlaps a part of the edge of the pixel electrode 17c, so that the storage capacitor Chc (see FIG. 1) is formed in the overlapping portion Kc of both (the storage capacitor wiring 18p and the pixel electrode 17c). Further, the storage capacitor wiring 18p may be overlapped with the remaining portion of the edge of the pixel electrode 17c (a portion along the data signal line 15x and a hypotenuse) in plan view as viewed from a plane. The storage capacitor line extending portion 18c extending through the outside and joining the storage capacitor wiring 18p again is connected, so that the electrically floating pixel electrode 17c is connected to the storage capacitor wiring 18p and the storage capacitor wiring extending portion. Electrically shielded by 18c.
- the storage capacitor wiring extending portion 18c and the pixel electrode 17a overlap each other, so that a storage capacitor Cha (see FIG. 1) is formed in the overlapping portion Ka of both (the storage capacitor wiring extending portion 18c and the pixel electrode 17a).
- the storage capacitor wiring 18q overlaps a part of the edge of the pixel electrode 17d, so that the storage capacitor Chd (see FIG. 1) is formed in the overlapping portion Kd of both (the storage capacitor wiring 18q and the pixel electrode 17d).
- the storage capacitor wiring 18q may be branched from the storage capacitor wiring 18q in plan view and overlap with the remaining portion of the edge of the pixel electrode 17d (the portion along the data signal line 15x and the oblique side) or its A storage capacitor wiring extension 18d that extends outside and joins the storage capacitor wiring 18q again is connected, whereby the pixel electrode 17d that is electrically floating is connected to the storage capacitor wiring 18q and the storage capacitor wiring extension. Electrically shielded by 18d. Further, the storage capacitor wiring extending portion 18d and the pixel electrode 17b overlap each other, whereby a storage capacitor Chb (see FIG. 1) is formed in the overlapping portion Kb of both (the storage capacitor wiring extending portion 18d and the pixel electrode 17b).
- an MVA (multi-domain vertical alignment) type liquid crystal panel can be configured by providing ribs on the color filter substrate and slits on the pixel electrodes. That is, in the pixel 100, the gap between the pixel electrodes 17a and 17c is a slit Sac, the pixel electrode 17a is provided with a slit Sa parallel to the slit Sac, and the pixel electrode 17c is provided with a slit Sc parallel to the slit Sac.
- a rib La parallel to the slit Sa is provided at a position between the slit Sa and the slit Sac in a plan view, and the slit Sc at a position between the slit Sc and the slit Sac in a plan view.
- Parallel ribs Lc are provided.
- the gap between the pixel electrodes 17b and 17d is a slit Sbd.
- the pixel electrode 17b is provided with a slit Sb parallel to the slit Sbd
- the pixel electrode 17d is provided with a slit Sd parallel to the slit Sbd.
- the rib Lb parallel to the slit Sb is provided at a position between the slit Sb and the slit Sbd as viewed in plan, and parallel to the slit Sd at a position between the slit Sd and the slit Sbd as viewed in plan.
- a rib Ld is provided.
- the active matrix substrate 5e shown in FIG. 12 can be modified as shown in FIG.
- four pixel electrodes (17a to 17d) and coupling capacitance electrodes 37a and 37b are arranged in the pixel region 100, and the pixel electrodes 17a and 17b (first and second pixel electrodes) are The pixel electrodes 17a and 17c (first and third pixel electrodes) are arranged in a row direction so as to face each other with the gap therebetween, and the scanning signal line 16x crosses the pixel region 100 so as to overlap the gap.
- the pixel electrodes 17b and 17d are V-shaped when viewed in the row direction, and are arranged adjacent to each other in the row direction via a slit-like boundary KY having a letter shape.
- the pixel electrode 17a is connected to the transistor 12a via the contact hole 11a, and the pixel electrode 17b is contacted via the contact hole 11a. It is connected to the transistor 12b through the hole 11b.
- the slit-like boundary KY is located in the upper stage of the pixel region 100.
- the slit-like boundary KY is temporarily extended in the row direction from the vicinity of the intersection between the scanning signal line 16x and the data signal line 15x, and then the direction is changed.
- the line 16x is extended to form 45 degrees, and when it reaches the upper middle of the pixel area 100, the direction is further changed to extend to the scan signal line 16x to form 135 degrees, so that the pixel area 100 Near the edge of
- the slit-like boundary ky is located in the lower stage of the pixel region 100, and when viewed in plan, once in the row direction from the vicinity of the intersection of the scanning signal line 16x and the data signal line 15X adjacent to the data signal line 15x.
- the orientation is changed so as to make 225 degrees with respect to the scanning signal line 16x, and when reaching the lower middle of the pixel region 100, the orientation is further changed to 315 degrees with respect to the scanning signal line 16x.
- the pixel electrode 17a When the pixel electrode 17a is rotated 180 degrees around the center of the gap between the pixel electrodes 17a and 17b, the pixel electrode 17a substantially coincides with the pixel electrode 17b, and when the pixel electrode 17b is rotated 180 degrees around the gap center, the pixel It almost coincides with the electrode 17d.
- the slit-shaped boundary KY ⁇ ky functions as an alignment regulating structure, and a part of the pixel electrode 17a is between the pixel electrode 17c and the scanning signal line 16x when viewed in plan. Since part of the pixel electrode 17b is disposed between the pixel electrode 17d and the scanning signal line 16x, the influence of the electrically floating pixel electrodes 17c and 17d from the scanning signal line 16x is suppressed. Has been.
- the coupling capacitor electrode 37a When viewed in plan, the coupling capacitor electrode 37a extends in the column direction from the connection portion with the drain electrode of the transistor 12a, changes direction after passing through the boundary KY, and the rib Li and pixel electrode of the color filter substrate It extends at 45 degrees with respect to the scanning signal line 16x so as to overlap with 17c, and reaches the upper middle of the pixel region 100.
- the coupling capacitor electrode 37b when viewed in plan, the coupling capacitor electrode 37b extends in the row direction from the connection with the drain electrode of the transistor 12b, and changes its direction in the vicinity of the intersection of the scanning signal line 16x and the data signal line 15X. After passing through the boundary ky, the direction is further changed, and the scanning signal line 16x extends 225 degrees so as to overlap the rib Li and the pixel electrode 17d, and reaches the middle of the lower stage of the pixel region 100.
- a coupling capacitance between the pixel electrodes 17a and 17c is formed at the overlapping portion between the pixel electrode 17c and the coupling capacitance electrode 37a, and between the pixel electrodes 17b and 17d at the overlapping portion between the pixel electrode 17d and the coupling capacitance electrode 37b.
- the aperture ratio and the alignment regulating force are enhanced.
- a storage capacitor line 18p is provided so as to overlap with the pixel region 100 and the previous pixel region
- a storage capacitor wire 18q is provided so as to overlap with the pixel region 100 and the next pixel region. From 18p, the storage capacitor wiring extending portion 18c extends so as to overlap with the edge along the data signal line 15x of the pixel electrode 17c, and from the storage capacitor wiring 18q, it overlaps with the edge along the data signal line 15X of the pixel electrode 17d. Further, the storage capacitor wiring extending portion 18d extends.
- a storage capacitor is formed at the overlapping portion of the storage capacitor wiring 18p and the pixel electrode 17a and the pixel electrode 17c, and a storage capacitor is formed at the overlapping portion of the storage capacitor wiring 18q and the pixel electrode 17b and the pixel electrode 17d.
- a storage capacitor wiring extension is provided for each pixel.
- a sub-wiring and a connecting electrode connected thereto are provided. It may be provided.
- sub-wirings formed in the same layer as these wirings are provided between one holding capacitor wiring and a scanning signal line that overlap two adjacent pixel rows, and a storage capacitor. Between the wiring and the sub-wiring, two transfer electrodes connected to both are provided per pixel, and the storage capacitor wiring overlaps a part of the edge of the pixel electrode, so that the two wirings in the sub-wiring and one pixel are passed.
- the electrode is arranged so as to overlap with or pass outside the remainder of the edge.
- a sub wiring 18 ⁇ is provided between the storage capacitor wiring 18p and the scanning signal line 16x, a sub wiring 18 ⁇ is provided between the storage capacitance wiring 18q and the scanning signal line 16x, and the storage capacitance wiring 18q and the scanning signal line 16y.
- a sub-wiring 18 ⁇ is provided therebetween, and a sub-wiring 18 ⁇ is provided between the storage capacitor wiring 18r and the scanning signal line 16y.
- the storage capacitor line 18p overlaps with a part of the edge of the pixel electrode 17c (one of the two portions along the row direction that is far from the scanning signal line 16x).
- Most of the storage capacitor Chc (see FIG. 1) is formed in the overlapping portion Kc of the pixel electrode 17c).
- the storage capacitor line 18p and the sub-wiring 18 ⁇ there are provided spacing electrodes 48 ⁇ and 58 ⁇ connected to both, and the sub-wiring 18 ⁇ , the passing electrode 48 ⁇ and the passing electrode 58 ⁇ are connected to the edge of the pixel electrode 17c.
- the pixel electrode 17c that is electrically floating is electrically shielded by the storage capacitor wiring 18p, the sub wiring 18 ⁇ , and the transfer electrodes 48 ⁇ and 58 ⁇ .
- a storage capacitor Cha (see FIG. 1) is formed in an overlapping portion Ka of both (the sub-wiring 18 ⁇ and the pixel electrode 17a).
- the storage capacitor wiring 18q overlaps with part of the edge of the pixel electrode 17d (the two portions along the row direction that are far from the scanning signal line 16x), thereby both (the storage capacitor wiring 18q and the pixel electrode 17d).
- Many of the storage capacitors Chd are formed in the overlapping portion Kd.
- spacing electrodes 48 ⁇ and 58 ⁇ connected to both, and the sub-wiring 18 ⁇ , the passing electrode 48 ⁇ and the passing electrode 58 ⁇ are connected to the edge of the pixel electrode 17d.
- the pixel electrode 17d which is electrically floating, is electrically shielded by the storage capacitor wiring 18q, the sub wiring 18 ⁇ , and the transfer electrodes 48 ⁇ and 58 ⁇ by being arranged so as to overlap the remaining portion or to pass outside. Further, since the sub-wiring 18 ⁇ and the pixel electrode 17b overlap each other, a storage capacitor Chb (see FIG. 1) is formed in an overlapping portion Kb of both (sub-wiring 18 ⁇ and the pixel electrode 17b). A part of the storage capacitor Chc is also formed at the overlapping portion between the transfer electrodes 48 ⁇ and 58 ⁇ and the pixel electrode 17c. In addition, a part of the storage capacitor Chd is also formed at the overlapping portion between the transfer electrodes 48 ⁇ and 58 ⁇ and the pixel electrode 17d.
- the redundancy of the storage capacitor wiring can be increased. For example, if a storage capacitor signal is input to each of the storage capacitor wiring and the sub wiring, it is possible to drive from the sub wiring side even if there is an abnormality in input or signal transmission on the storage capacitor wiring side.
- a storage capacitor wiring extension is provided for each pixel.
- the sub wiring and the pixel electrode are provided in the same layer. You may provide the shield electrode formed.
- sub-wirings formed in the same layer as these wirings are provided between one storage capacitor wiring and scanning signal lines overlapping two adjacent pixel rows, and contact holes are provided.
- the shield electrode connected to the storage capacitor wiring through the first electrode is provided in the same layer as the pixel electrode, the storage capacitor wiring overlaps with a part of the edge of the pixel electrode, and the shield electrode passes outside the remainder of the edge. Is arranged.
- a sub wiring 18 ⁇ is provided between the storage capacitor wiring 18p and the scanning signal line 16x, a sub wiring 18 ⁇ is provided between the storage capacitance wiring 18q and the scanning signal line 16x, and the storage capacitance wiring 18q and the scanning signal line 16y.
- a sub-wiring 18 ⁇ is provided therebetween, and a sub-wiring 18 ⁇ is provided between the storage capacitor wiring 18r and the scanning signal line 16y.
- the storage capacitor line 18p overlaps with a part of the edge of the pixel electrode 17c (one of the two portions along the row direction that is far from the scanning signal line 16x).
- a storage capacitor Chc (see FIG. 1) is formed in the overlapping portion Kc of the electrode 17c).
- the shield electrode 68c connected to the storage capacitor wiring 18p through the contact holes 11 ⁇ and 61 ⁇ is arranged in the same layer as the outer side of the remaining portion of the edge (of the pixel electrode 17c).
- the pixel electrode 17c that is electrically floating is electrically shielded by the storage capacitor line 18p and the shield electrode 68c.
- a storage capacitor Cha (see FIG. 1) is formed in an overlapping portion Ka of both (the sub-wiring 18 ⁇ and the pixel electrode 17a).
- the storage capacitor wiring 18q overlaps with part of the edge of the pixel electrode 17d (the two portions along the row direction that are far from the scanning signal line 16x), thereby both (the storage capacitor wiring 18q and the pixel electrode 17d).
- a storage capacitor Chd (see FIG. 1) is formed in the overlapping portion Kd.
- the shield electrode 68d connected to the storage capacitor wiring 18q through the contact holes 11 ⁇ and 61 ⁇ is disposed in the same layer as the outer side of the remaining portion of the edge (of the pixel electrode 17d).
- the pixel electrode 17d that is electrically floating is electrically shielded by the storage capacitor line 18q and the shield electrode 68d.
- a storage capacitor Chb is formed in an overlapping portion Kb of both (sub-wiring 18 ⁇ and the pixel electrode 17b).
- the shield electrode is formed in the same layer as the pixel electrode that is electrically floating, the electrical shield effect is high. It is particularly suitable when the interlayer insulating film is composed of two layers (an inorganic interlayer insulating film and an organic interlayer insulating film thicker than this).
- the coupling capacitance between two pixel electrodes arranged on one side of the scanning signal line and the coupling capacitance between two pixel electrodes arranged on the other side of the scanning signal line are made substantially equal, but not limited to this. These capacitance values may be different values.
- the sub-pixel including the pixel electrode 17a and the sub-pixel including the pixel electrode 17b are each a bright sub-pixel having substantially the same luminance
- the sub-pixel including the pixel electrode 17c is a dark sub-pixel
- the sub-pixel including the pixel electrode 17d Is a medium luminance subpixel (hereinafter referred to as a medium subpixel) having a luminance between a bright subpixel (a subpixel including the pixel electrode 17a or the pixel electrode 17b) and a dark subpixel (a subpixel including the pixel electrode 17c).
- the area of the coupling capacitor electrode 37f connected to the transistor 12f and overlapping the pixel electrode 17h is larger than the area of the coupling capacitor electrode 37e connected to the transistor 12e and overlapping the pixel electrode 17e. Accordingly, the sub-pixel including the pixel electrode 17e and the sub-pixel including the pixel electrode 17f are each a bright sub-pixel having substantially the same luminance, the sub-pixel including the pixel electrode 17g is a dark sub-pixel, and the sub-pixel including the pixel electrode 17h.
- Is a medium luminance subpixel (hereinafter referred to as a medium subpixel) having a luminance between a bright subpixel (a subpixel including the pixel electrode 17a or the pixel electrode 17b) and a dark subpixel (a subpixel including the pixel electrode 17c).
- FIG. 17 is a timing chart showing a driving method of the present liquid crystal display device (normally black mode liquid crystal display device) provided with the liquid crystal panel 5h.
- Sv and SV indicate signal potentials supplied to two adjacent data signal lines (for example, 15x and 15X), respectively.
- Gx and Gy are gate-on pulse signals supplied to the scanning signal lines 16x and 16y.
- Va to Vd, VA to VD, and Ve to Vh represent the potentials of the pixel electrodes 17a to 17d, 17A to 17D, and 17e to 17h, respectively.
- the scanning signal lines are sequentially selected, the polarity of the signal potential supplied to the data signal lines is inverted every horizontal scanning period (1H), and the same number in each frame.
- the polarity of the signal potential supplied in the horizontal scanning period is inverted in units of one frame, and in the same horizontal scanning period, a signal potential having a reverse polarity is supplied to two adjacent data signal lines.
- the subpixel including the pixel electrode 17c positive polarity
- the subpixel including the pixel electrode 17a positive polarity
- the pixel electrode 17b plus
- the subpixel including the polarity) is “bright”
- the subpixel including the pixel electrode 17d plus polarity
- the medium luminance subpixel hereinafter “medium”
- the subpixel including the pixel electrode 17g minus polarity
- the subpixel including the pixel electrode 17e (minus polarity) is“ bright ”
- the subpixel including the pixel electrode 17f (minus polarity) is“ bright ”
- the subpixel including the pixel electrode 17h (minus polarity) is“ medium ”.
- the subpixel including the pixel electrode 17C (negative polarity) is “dark”
- the subpixel including the pixel electrode 17A (negative polarity) is “bright”
- the subpixel including the pixel electrode 17B (negative polarity) is “bright”
- Electrode 17D Subpixel becomes "medium” containing Inasu polarity), as a whole, is shown in FIG. 18 (a).
- the subpixel including the pixel electrode 17c (minus polarity) is “dark”
- the subpixel including the pixel electrode 17a (minus polarity) is “bright”
- the subpixel including the pixel electrode 17b (minus polarity) is “
- the sub-pixel including the pixel electrode 17d (negative polarity) is “middle”
- the sub-pixel including the pixel electrode 17g (positive polarity) is “dark”
- the sub-pixel including the pixel electrode 17e (positive polarity) is “bright”.
- the sub-pixel including the pixel electrode 17f (positive polarity) is“ bright ”
- the sub-pixel including the pixel electrode 17h (positive polarity) is“ medium ”
- the sub-pixel including the pixel electrode 17C (positive polarity) is“ dark ”.
- the sub-pixel including the pixel electrode 17A (positive polarity) is “bright”
- the sub-pixel including the pixel electrode 17B (positive polarity) is “bright”
- the sub-pixel including the pixel electrode 17D (positive polarity) is “medium”. As a whole, FIG. ) It is as.
- a middle pixel (medium luminance pixel) can be formed in one pixel, so that viewing angle characteristics can be further improved. Can do.
- the liquid crystal panel 5h can be modified as shown in FIG. In FIG. 19, assuming that the pixel electrode 17c and the pixel electrode 17C are adjacent to each other in the row direction, and the pixel electrode 17d and the pixel electrode 17D are adjacent to each other in the row direction, the pixel electrode 17c is connected to the transistor 12b.
- the area of the overlapping coupling capacitance electrode 37b is connected to the transistor 12a and larger than the area of the coupling capacitance electrode 37a overlapping the pixel electrode 17c, and the area of the coupling capacitance electrode 37A connected to the transistor 12A and overlapping the pixel electrode 17C is 12B and larger than the area of the coupling capacitor electrode 37B overlapping the pixel electrode 17D, the area of the coupling capacitor electrode 37a and the area of the coupling capacitor electrode 37B are equal, and the area of the coupling capacitor electrode 37b and the area of the coupling capacitor electrode 37A And are equal.
- the capacitance value of the coupling capacitor Cac between the pixel electrodes 17a and 17c C1
- the sub-pixel including the pixel electrode 17a and the sub-pixel including the pixel electrode 17b are each a bright sub-pixel having substantially the same luminance
- the sub-pixel including the pixel electrode 17c is a dark sub-pixel
- the sub-pixel including the pixel electrode 17d are middle sub-pixels.
- the sub-pixel including the pixel electrode 17A and the sub-pixel including the pixel electrode 17B are bright sub-pixels having substantially the same luminance
- the sub-pixel including the pixel electrode 17C is medium.
- a sub-pixel that is a sub-pixel and includes the pixel electrode 17D is a dark sub-pixel.
- the display is as shown in FIG. 20 in each frame (F1 and F2). It is possible to prevent subpixels from being unevenly distributed (not aligned in the row direction).
- FIG. 21 is an equivalent circuit diagram showing a part of the liquid crystal panel according to the second embodiment.
- the present liquid crystal panel is provided with one data signal line and one scanning signal line corresponding to one pixel, and corresponding to two pixels adjacent in the column direction.
- One storage capacitor line is provided.
- One pixel is provided with three pixel electrodes. Three pixel electrodes 17a, 17b, and 17d provided on the pixel 100 and three pixel electrodes 17e, 17f, and 17h provided on the pixel 101 are arranged in a line.
- the three pixel electrodes 17A, 17B, and 17D provided in the pixel 102 and the three pixel electrodes 117E, 17F, and 17H provided in the pixel 103 are arranged in a line, and the pixel electrodes 17a and 17A and the pixel electrode 17b and 17B, pixel electrodes 17d and 17D, pixel electrodes 17e and 17E, pixel electrodes 17f and 17F, and pixel electrodes 17h and 17H are adjacent to each other in the row direction.
- the pixel electrodes 17b and 17d are connected via the coupling capacitor Cbd
- the pixel electrode 17a is connected to the data signal line 15x via the transistor 12a connected to the scanning signal line 16x
- the pixel electrode 17b is Connected to the data signal line 15x via the transistor 12b connected to the scanning signal line 16x
- a storage capacitor Cha is formed between the pixel electrode 17a and the storage capacitor line 18p
- the pixel electrode 17b and the storage capacitor line 18q are extended.
- the storage capacitor Chb is formed between the pixel electrode 17d, the storage capacitor wiring 18q, and the extended portion thereof.
- a liquid crystal capacitor Cla is formed between the pixel electrode 17a and the common electrode com, a liquid crystal capacitor Clb is formed between the pixel electrode 17b and the common electrode com, and a liquid crystal capacitor Cld is formed between the pixel electrode 17d and the common electrode com. Yes.
- the pixel electrodes 17f and 17h are connected via the coupling capacitor Cfh, and the pixel electrode 17e is connected to the data signal line via the transistor 12e connected to the scanning signal line 16y.
- the pixel electrode 17f is connected to the data signal line 15x via the transistor 12f connected to the scanning signal line 16y
- the storage capacitor Che is formed between the pixel electrode 17e and the storage capacitor wiring 18q.
- a storage capacitor Chf is formed between the pixel electrode 17f and the extended portion of the storage capacitor wire 18r
- a storage capacitor Chh is formed between the pixel electrode 17h, the storage capacitor wire 18r and the extended portion.
- a liquid crystal capacitor Cle is formed between the pixel electrode 17e and the common electrode com, a liquid crystal capacitor Clf is formed between the pixel electrode 17f and the common electrode com, and a liquid crystal capacitor Clh is formed between the pixel electrode 17h and the common electrode com. Yes.
- the pixel electrodes 17B and 17D are connected via the coupling capacitor CBD, and the pixel electrode 17A is connected to the data signal line via the transistor 12A connected to the scanning signal line 16x.
- the pixel electrode 17B is connected to the data signal line 15X via the transistor 12B connected to the scanning signal line 16x, and a storage capacitor ChA is formed between the pixel electrode 17A and the storage capacitor line 18p.
- a storage capacitor ChB is formed between the extended portions of 17B and the storage capacitor wiring 18q, and a storage capacitor ChD is formed between the pixel electrode 17D and the storage capacitor wiring 18q.
- a liquid crystal capacitor ClA is formed between the pixel electrode 17A and the common electrode com
- a liquid crystal capacitor ClB is formed between the pixel electrode 17B and the common electrode com
- a liquid crystal capacitor ClD is formed between the pixel electrode 17D and the common electrode com. Yes.
- scanning is sequentially performed, and the scanning signal lines 16x and 16y are sequentially selected.
- the pixel electrode 17a is connected to the data signal line 15x (via the transistor 12a)
- the pixel electrode 17b is connected to the data signal line 15x (via the transistor 12b).
- the capacitance value of Cld Clj
- Chd capacitance value Chj
- Cbd capacitance value C2
- Va Vb
- (for example,
- means a potential difference between Va and com potential Vcom) and includes a sub-pixel including the pixel electrode 17a.
- the sub-pixel including the pixel and the pixel electrode 17b is a bright sub-pixel having substantially the same luminance, and the sub-pixel including the pixel electrode 17d is a dark sub-pixel.
- the sub-pixel including the pixel electrode 17A and the sub-pixel including the pixel electrode 17B are each a bright sub-pixel having substantially the same luminance, and the sub-pixel including the pixel electrode 17D is a dark sub-pixel.
- the sub-pixel including the pixel electrode 17e and the sub-pixel including the pixel electrode 17f are substantially the same luminance bright sub-pixel and sub-pixel including the pixel electrode 17h, respectively.
- Is a dark subpixel a subpixel including the pixel electrode 17E and a subpixel including the pixel electrode 17F are each a bright subpixel having substantially the same luminance, and a subpixel including the pixel electrode 17H is a dark subpixel.
- FIG. 22 shows a specific example of the liquid crystal panel of FIG.
- each pixel is divided into two parts (regions) by a single scanning signal line crossing the pixel, and one pixel electrode has two pixel lines along the pixel row direction. It is arranged to be adjacent to one edge and the scanning signal line, and in the other part, a pixel electrode connected to the transistor and a pixel electrode connected to this through a capacitor are adjacent to the scanning signal line. The latter is arranged adjacent to the other of the two edges.
- one storage capacitor line is provided corresponding to (overlapping) two adjacent pixel rows, and the storage capacitor line overlaps a part of the edge of the pixel electrode, and the capacitively coupled pixel electrode and
- the overlapping storage capacitor wiring is connected to a storage capacitor wiring extending portion that overlaps with the remainder of the edge in plan view or extends so as to pass outside and joins the storage capacitor wiring again.
- the data signal line 15x is provided along the pixel 100 and the pixel 101
- the data signal line 15X is provided along the pixel 102 and the pixel 103
- the scanning signal line 16x is provided for each of the pixels 100 and 102.
- the scanning signal line 16y crosses the center of each of the pixels 101 and 103 across the center.
- the storage capacitor wiring 18p is provided so as to overlap the pixel row including the pixels 100 and 102 and the upper pixel row in the drawing, and overlaps the pixel row including the pixels 100 and 102 and the pixel row including the pixels 101 and 103.
- the storage capacitor wiring 18q is provided
- the storage capacitor wiring 18r is provided so as to overlap the pixel row including the pixels 101 and 103 and the lower pixel row in the figure.
- a rectangular pixel electrode 17a connected to the transistor 12a has one of two edges along the row direction of the scanning signal line 16x and the pixel 100.
- a rectangular pixel electrode 17b connected to the transistor 12b and a rectangular pixel electrode 17d connected to the transistor 12b via a capacitor are arranged on the lower side of the scanning signal line 16x in the drawing, and are connected to the pixel electrode 17d.
- 17b is arranged adjacent to the scanning signal line 16x
- the pixel electrode 17d is arranged adjacent to the other of the two edges along the row direction in the pixel 100.
- the source electrode 8a and the drain electrode 9a of the transistor 12a and the source electrode 8b and the drain electrode 9b of the transistor 12b are formed.
- the source electrode 8a is connected to the data signal line 15x.
- the drain electrode 9a is connected to the drain lead wiring 27a, and the drain lead wiring 27a is connected to the pixel electrode 17a through the contact hole 11a.
- the source electrode 8b is connected to the data signal line 15x.
- the drain electrode 9b is connected to the drain lead wiring 27b.
- the drain lead wiring 27b is connected to the coupling capacitor electrode 37b formed in the same layer and connected to the pixel electrode 17b through the contact hole 11b. It overlaps with the pixel electrode 17d via an insulating film, thereby forming a coupling capacitor Cbd (see FIG. 1) between the pixel electrodes 17b and 17d.
- the storage capacitor line 18p overlaps part of the edge of the pixel electrode 17a (the two parts along the row direction that are far from the scanning signal line 16x), so that both (the storage capacitor line 18p and the pixel electrode 17a) of both.
- a storage capacitor Cha (see FIG. 1) is formed in the overlapping portion Ka.
- the storage capacitor line 18q overlaps with part of the edge of the pixel electrode 17d (the two parts along the row direction that are far from the scanning signal line 16x), so that both of the storage capacitor line 18q and the pixel electrode 17d).
- Many of the storage capacitors Chd are formed in the overlapping portion Kd.
- the storage capacitor line 18q is branched from the storage capacitor line 18p in plan view and overlaps with the rest of the edge of the pixel electrode 17d or extends so as to pass outside thereof, and is again connected to the storage capacitor line 18q.
- the storage capacitor line extending portion 18d to be joined is connected, and thereby the electrically floating pixel electrode 17d is electrically shielded by the storage capacitor wire 18q and the storage capacitor line extending portion 18d.
- the storage capacitor wiring extending portion 18d and the pixel electrode 17b overlap each other, whereby a storage capacitor Chb (see FIG. 1) is formed in the overlapping portion Kb of both (the storage capacitor wiring extending portion 18d and the pixel electrode 17b).
- a part of the storage capacitor Chd is also formed at the overlapping portion of the storage capacitor line extending portion 18d and the pixel electrode 17d.
- a rectangular pixel electrode 17e connected to the transistor 12e is on one of two edges along the row direction of the scanning signal line 16y and the pixel 101 on the upper side of the scanning signal line 16y crossing the center.
- the pixel electrode 17f connected to the transistor 12f and the pixel electrode 17h connected to the transistor 12f via a capacitor are arranged on the lower side of the scanning signal line 16y in the drawing, and the pixel electrode 17f is connected to the scanning signal line.
- the pixel electrode 17h is arranged adjacent to the other of the two edges.
- a source electrode 8e and a drain electrode 9e of the transistor 12e and a source electrode 8f and a drain electrode 9f of the transistor 12f are formed on the scanning signal line 16y.
- the source electrode 8e is connected to the data signal line 15x.
- the drain electrode 9e is connected to the drain lead wiring 27e, and the drain lead wiring 27e is connected to the pixel electrode 17e through the contact hole 11e.
- the source electrode 8f is connected to the data signal line 15x.
- the drain electrode 9f is connected to the drain lead wiring 27f, and the drain lead wiring 27f is connected to the coupling capacitor electrode 37f formed in the same layer and connected to the pixel electrode 17f through the contact hole 11f. It overlaps with the pixel electrode 17h via an insulating film, thereby forming a coupling capacitance Cfh (see FIG. 1) between the pixel electrodes 17f and 17h.
- the storage capacitor wiring 18q overlaps with a part of the edge of the pixel electrode 17e, so that the storage capacitor Che (see FIG. 1) is formed in the overlapping portion Ke between the two (the storage capacitor wiring 18q and the pixel electrode 17e). Further, since the storage capacitor line 18r overlaps a part of the edge of the pixel electrode 17h, most of the storage capacitor Chh (see FIG. 1) is formed in the overlapping portion Kh of both (the storage capacitor line 18r and the pixel electrode 17h). . Further, the storage capacitor line 18r is branched from the storage capacitor line 18r in a plan view and overlaps with the rest of the edge of the pixel electrode 17h or extends so as to pass outside thereof, and is again formed into the storage capacitor line 18r.
- the storage capacitor line extending portions 18h to be joined are connected, and thereby the electrically floating pixel electrode 17h is electrically shielded by the storage capacitor wiring 18r and the storage capacitor wire extending portion 18h. Further, the storage capacitor wiring extending portion 18h and the pixel electrode 17f overlap each other, whereby a storage capacitor Chf (see FIG. 1) is formed in the overlapping portion Kf of both (the storage capacitor wiring extending portion 18h and the pixel electrode 17f). A part of the storage capacitor Chh is also formed at the overlapping portion of the storage capacitor wiring extending portion 18h and the pixel electrode 17h.
- FIG. 23 is a timing chart showing a driving method of the present liquid crystal display device (normally black mode liquid crystal display device) provided with the liquid crystal panel shown in FIGS. Sv and SV indicate signal potentials supplied to two adjacent data signal lines (for example, 15x and 15X), respectively.
- Gx and Gy are gate-on pulse signals supplied to the scanning signal lines 16x and 16y.
- Va, Vb, Vd, VA, VB, VD, and Ve, Vf, and Vh indicate the potentials of the pixel electrodes 17a, 17b, and 17d, 17A, 17B, and 17D, and 17e, 17f, and 17h, respectively.
- the scanning signal lines are sequentially selected, the polarity of the signal potential supplied to the data signal lines is inverted every horizontal scanning period (1H), and the same number in each frame.
- the polarity of the signal potential supplied in the horizontal scanning period is inverted in units of one frame, and in the same horizontal scanning period, a signal potential having a reverse polarity is supplied to two adjacent data signal lines.
- the subpixel including the pixel electrode 17a (plus polarity) is “bright”
- the subpixel including the pixel electrode 17b (plus polarity) is “bright”
- the pixel electrode 17d (plus) is “dark”
- the subpixel including the pixel electrode 17e (minus polarity) is “bright”
- the subpixel including the pixel electrode 17f (minus polarity) is “bright”
- the pixel electrode 17h (minus polarity).
- the subpixel including the pixel electrode 17a (minus polarity) is “bright”
- the subpixel including the pixel electrode 17b (minus polarity) is “bright”
- the subpixel including the pixel electrode 17d (minus polarity) is “ “Dark”
- the subpixel including the pixel electrode 17e (plus polarity) is “bright”
- the subpixel including the pixel electrode 17f (plus polarity) is “bright”
- the subpixel including the pixel electrode 17h (plus polarity) is “dark”.
- the sub-pixel including the pixel electrode 17A (positive polarity) is “bright”
- the sub-pixel including the pixel electrode 17B (positive polarity) is “bright”
- the sub-pixel including the pixel electrode 17D (positive polarity) is “dark”. As a whole, the result is as shown in FIG.
- the scanning signal line is arranged at the center of the pixel, two pixel electrodes (pixel electrodes corresponding to the bright sub-pixels) connected to the data signal line through the transistor are arranged adjacent to each other in the pixel.
- One pixel electrode (pixel electrode corresponding to the dark subpixel) that is electrically floating is arranged side by side with the two pixel electrodes corresponding to the bright subpixel, and the storage capacitor wiring and the storage capacitor wiring extending portion are It can also function as an electric shield pattern of the pixel electrode that is electrically floating while being separated from the scanning signal line.
- the two adjacent pixels are arranged in the pixel while preventing the dark sub-pixel from being burned as much as possible by suppressing the jumping of the charge into the two pixel electrodes.
- Two bright subpixels and dark subpixels can be arranged in the column direction.
- the drain lead-out wiring can be shortened, and the effect of reducing the disconnection rate and improving the aperture ratio can be obtained. Furthermore, the redundant effect of the storage capacitor wiring can be obtained by the storage capacitor wiring extending portion. For example, even if the storage capacitor wiring is disconnected between the part where the storage capacitor wiring extension part branches and the part where the storage capacitor wiring extension part merges, the storage capacitor wiring extension part becomes a bypass route and the part after the disconnection point A storage capacitor wiring signal (for example, a Vcom signal equal to the potential of the common electrode) can be sent to the portion.
- a Vcom signal equal to the potential of the common electrode
- the polarity of the signal potential supplied to each data signal line is inverted every horizontal scanning period (1H), so that when the transistor is turned off between two adjacent pixels in the column direction.
- the direction of pulling in the potential is reversed, and flickering can be suppressed.
- by supplying a signal potential of opposite polarity to each of two adjacent data signal lines in the same horizontal scanning period the potential when the transistor is OFF between two adjacent pixels in the row direction. The retraction direction is reversed, and flickering can be suppressed.
- FIG. 25 is an equivalent circuit diagram showing a part of the liquid crystal panel according to the third embodiment.
- the present liquid crystal panel includes data signal lines (15x / 15X) extending in the column direction (vertical direction in the figure) and scanning signal lines (16x / 16y) extending in the row direction (horizontal direction in the figure). ), Pixels (100 to 103) arranged in the row and column directions, storage capacitor lines (18p, 18q, 18r), and common electrodes (counter electrodes) com, and the structure of each pixel is the same.
- the pixel column including the pixels 100 and 101 and the pixel column including the pixels 102 and 103 are adjacent to each other, and the pixel row including the pixels 100 and 102 and the pixel row including the pixels 101 and 103 are adjacent to each other. is doing.
- one data signal line and one scanning signal line are provided corresponding to one pixel, and one storage capacitor line is provided corresponding to two pixels adjacent in the column direction. Is provided.
- six pixel electrodes are provided in one pixel, six pixel electrodes 17c, 17t, 17a, 17b, 17s, and 17d provided in the pixel 100, and six pixel electrodes 17g, provided in the pixel 101. 17w, 17e, 17f, 17z, and 17h are arranged in a line, and the six pixel electrodes 17C, 17T, 17A, 17B, 17S, and 17D provided in the pixel 102 and the six pixel electrodes 17G provided in the pixel 103 are arranged.
- 17W, 17E, 17F, 17Z, and 17H are arranged in a row, and the pixel electrodes 17c and 17C, the pixel electrodes 17t and 17T, the pixel electrodes 17a and 17A, the pixel electrodes 17b and 17B, the pixel electrodes 17s and 17S, and the pixel electrode 17d 17D, pixel electrodes 17g and 17G, pixel electrodes 17w and 17W, pixel electrodes 17e and 17E, pixel electrodes 17f and 17F, pixel Electrode 17z and 17Z, the pixel electrode 17h and 17H are respectively adjacent in the row direction.
- the pixel electrodes 17a and 17t are connected via a coupling capacitance Cat
- the pixel electrodes 17t and 17c are connected via a coupling capacitance Ctc
- the pixel electrodes 17b and 17s are connected via a coupling capacitance Cbs.
- the pixel electrodes 17s and 17d are connected via the coupling capacitor Csd
- the pixel electrode 17a is connected to the data signal line 15x via the transistor 12a connected to the scanning signal line 16x
- the pixel electrode 17b is connected to the pixel electrode 17b.
- a storage capacitor Chc is formed between the pixel electrode 17c, the storage capacitor line 18p and its extended portion, and the pixel electrode 17t
- a storage capacitor Cht is formed between the extended portion of the capacitor wiring 18p and the pixel electrode 17a and the storage capacitor.
- a storage capacitor Cha is formed between the extended portion of the wiring 18p
- a storage capacitor Chd is formed between the pixel electrode 17d, the storage capacitor wiring 18q, and the extended portion, and an extended portion of the pixel electrode 17s and the storage capacitor wiring 18q.
- the storage capacitor Chs is formed between the pixel electrode 17b and the extended portion of the storage capacitor wiring 18q.
- a liquid crystal capacitor Clc is formed between the pixel electrode 17c and the common electrode com, a liquid crystal capacitor Clt is formed between the pixel electrode 17t and the common electrode com, and a liquid crystal capacitor Cla is formed between the pixel electrode 17a and the common electrode com.
- a liquid crystal capacitor Clb is formed between the pixel electrode 17b and the common electrode com, a liquid crystal capacitor Cls is formed between the pixel electrode 17s and the common electrode com, and a liquid crystal capacitor Cld is formed between the pixel electrode 17d and the common electrode com.
- scanning is sequentially performed, and the scanning signal lines 16x and 16y are sequentially selected.
- the scanning signal line 16x is selected, the potentials of the pixel electrodes 17a, 17t, and 17c after the transistor 12a is turned off are Va, Vt, and Vc, respectively, and the pixel electrode 17b and the pixel electrode 17b after the transistor 12b is turned off.
- the subpixel including the pixel electrode 17a and the subpixel including the pixel electrode 17b are a bright subpixel having substantially the same luminance, a subpixel including the pixel electrode 17c, and the pixel electrode, respectively.
- the sub-pixels including 17d are dark sub-pixels having substantially the same luminance, the sub-pixels including pixel electrode 17t, and the sub-pixels including the pixel electrode 17s are respectively medium sub-pixels (bright The luminance between the pixel and the dark sub-pixel becomes a sub-pixel).
- FIG. 26 A specific example of this liquid crystal panel is shown in FIG. 26, the data signal line 15x is provided along the pixel 100 and the pixel 101, the data signal line 15X is provided along the pixel 102 and the pixel 103, and the scanning signal line 16x is provided as the pixel 100.
- the scanning signal line 16y crosses the center of each of the pixels 101 and 103.
- the storage capacitor wiring 18p is provided so as to overlap the pixel row including the pixels 100 and 102 and the upper pixel row in the drawing, and overlaps the pixel row including the pixels 100 and 102 and the pixel row including the pixels 101 and 103.
- the storage capacitor wiring 18q is provided, and the storage capacitor wiring 18r is provided so as to overlap the pixel row including the pixels 101 and 103 and the lower pixel row in the figure.
- a rectangular pixel electrode 17a connected to the transistor 12a and a rectangular pixel electrode 17t connected to the pixel electrode 17a via a capacitor are arranged on the upper side of the scanning signal line 16x crossing the center.
- a rectangular pixel electrode 17c connected to the pixel electrode 17t via a capacitor the pixel electrode 17a is adjacent to the scanning signal line 16x, and the pixel electrode 17c is one of two edges along the row direction of the pixel 100.
- the pixel electrode 17t is arranged adjacent to each other so as to be sandwiched between the pixel electrode 17a and the pixel electrode 17c, and on the lower side of the scanning signal line 16x in the drawing, a rectangular pixel electrode 17b connected to the transistor 12b and the pixel electrode 17b A rectangular pixel electrode 17s connected to the pixel electrode 17c via a capacitor and a rectangular image connected to the pixel electrode 17s via a capacitor
- the electrode 17d is adjacent to the scanning signal line 16x
- the pixel electrode 17b is adjacent to the other of the two edges along the row direction of the pixel 100
- the pixel electrode 17s is connected to the pixel electrode 17b and the pixel electrode 17d. They are arranged so that they can be pinched.
- the source electrode 8a and drain electrode 9a of the transistor 12a and the source electrode 8b and drain electrode 9b of the transistor 12b are formed on the scanning signal line 16x.
- the source electrode 8a is connected to the data signal line 15x.
- the drain electrode 9a is connected to the drain lead wiring 27a, and the drain lead wiring 27a is connected to the coupling capacitor electrode 37a formed in the same layer and connected to the pixel electrode 17a through the contact hole 11a. It overlaps with the pixel electrode 17t through an insulating film, thereby forming a coupling capacitance Cat (see FIG. 25) between the pixel electrodes 17a and 17t.
- the pixel electrode 17t is connected to the coupling capacitor electrode 37t through the contact hole 11t, and the coupling capacitor electrode 37t overlaps the pixel electrode 17c through the interlayer insulating film, whereby the coupling capacitor between the pixel electrodes 17t and 17c. Ctc (see FIG. 25) is formed.
- the source electrode 8b is connected to the data signal line 15x.
- the drain electrode 9b is connected to the drain lead wiring 27b.
- the drain lead wiring 27b is connected to the coupling capacitor electrode 37b formed in the same layer and connected to the pixel electrode 17b through the contact hole 11b. It overlaps with the pixel electrode 17s through the insulating film, thereby forming a coupling capacitance Cbs (see FIG.
- the pixel electrode 17s is connected to the coupling capacitor electrode 37s through the contact hole 11s, and the coupling capacitor electrode 37s overlaps the pixel electrode 17d through the interlayer insulating film, whereby the coupling capacitor between the pixel electrodes 17s and 17d. Csd (see FIG. 25) is formed.
- the storage capacitor line 18p overlaps part of the edge of the pixel electrode 17c (the two parts along the row direction that are far from the scanning signal line 16x), so that both of the storage capacitor line 18p and the pixel electrode 17c).
- Most of the storage capacitor Chc (see FIG. 25) is formed in the overlapping portion Kc.
- the storage capacitor wiring 18p is branched from the storage capacitor wiring 18p in plan view and overlaps with the rest of the edge of the pixel electrode 17c or extends to the outside and extends again to the storage capacitor wiring 18p.
- the storage capacitor line extending portion 18c to be joined is connected, and thereby the electrically floating pixel electrode 17c is electrically shielded by the storage capacitor line 18p and the storage capacitor line extending portion 18c.
- the storage capacitor line extending portion 18c overlaps with a part of the edge of the pixel electrode 17t (one of the two portions along the row direction that is far from the scanning signal line 16x), whereby both (the storage capacitor line extending portion 18c and the pixel) A part of the storage capacitor Cht (see FIG. 25) is formed in the overlapping portion Kt of the electrode 17t).
- the storage capacitor wiring extending portion 18c is branched from the storage capacitor wiring extending portion 18c in plan view and overlaps with the remaining portion of the edge of the pixel electrode 17t or extends so as to pass outside thereof and is held again.
- the storage capacitor wiring extension 18t that joins the capacitor wiring extension 18c is connected, whereby the electrically floating pixel electrode 17t is electrically shielded by the storage capacitor wiring extension 18c and the storage capacitor wiring extension 18t. Is done. Further, the storage capacitor wiring extending portion 18t and the pixel electrode 17a overlap each other, whereby a storage capacitor Cha (see FIG. 25) is formed in the overlapping portion Ka between the two (the storage capacitor wiring extending portion 18t and the pixel electrode 17a). A part of the storage capacitor Chc is also formed at the overlapping portion of the storage capacitor line extending portion 18c and the pixel electrode 17c. Further, a part of the storage capacitor Cht is also formed at the overlapping portion of the storage capacitor wiring extending portion 18t and the pixel electrode 17t.
- the storage capacitor wiring 18q overlaps with part of the edge of the pixel electrode 17d (the two portions along the row direction that are far from the scanning signal line 16x), thereby both (the storage capacitor wiring 18q and the pixel electrode 17d).
- Many of the storage capacitors Chd are formed in the overlapping portion Kd.
- the storage capacitor wiring 18q is branched from the storage capacitor wiring 18q in plan view and overlaps with the remaining portion of the edge of the pixel electrode 17d or extends so as to pass outside the storage capacitor wiring 18q.
- the storage capacitor line extending portion 18d to be joined is connected, and thereby the electrically floating pixel electrode 17d is electrically shielded by the storage capacitor wire 18q and the storage capacitor line extending portion 18d.
- the storage capacitor line extending portion 18d overlaps a part of the edge of the pixel electrode 17s (the two portions along the row direction that are far from the scanning signal line 16x), thereby both (the storage capacitor line extending portion 18d and the pixel).
- a part of the storage capacitor Chs (see FIG. 25) is formed in the overlapping portion Ks of the electrode 17s).
- the storage capacitor wiring extending portion 18d is branched from the storage capacitor wiring extending portion 18d in plan view and overlaps with the remaining portion of the edge of the pixel electrode 17s or extends so as to pass outside.
- the storage capacitor wiring extension 18s that joins the capacitor wiring extension 18d is connected, whereby the electrically floating pixel electrode 17s is electrically shielded by the storage capacitor wiring extension 18d and the storage capacitor wiring extension 18s. Is done. Further, the storage capacitor wiring extending portion 18s and the pixel electrode 17b overlap with each other, so that a storage capacitor Chb (see FIG. 25) is formed in the overlapping portion Kb of both (the storage capacitor wiring extending portion 18s and the pixel electrode 17b). A part of the storage capacitor Chd is also formed at the overlapping portion of the storage capacitor line extending portion 18d and the pixel electrode 17d. A part of the storage capacitor Chs is also formed at the overlapping portion of the storage capacitor line extending portion 18s and the pixel electrode 17s.
- FIG. 27 is a timing chart showing a driving method of the present liquid crystal display device (normally black mode liquid crystal display device) provided with the liquid crystal panel shown in FIGS.
- Sv and SV indicate signal potentials supplied to two adjacent data signal lines (for example, 15x and 15X), respectively.
- Gx and Gy are gate-on pulse signals supplied to the scanning signal lines 16x and 16y.
- Va to Vd, Vt, and Vs indicate the potentials of the pixel electrodes 17a to 17d, 17t, and 17s, respectively.
- the scanning signal lines are sequentially selected, the polarity of the signal potential supplied to the data signal lines is inverted every horizontal scanning period (1H), and the same number in each frame.
- the polarity of the signal potential supplied in the horizontal scanning period is inverted in units of one frame, and in the same horizontal scanning period, a signal potential having a reverse polarity is supplied to two adjacent data signal lines.
- the scanning signal lines are sequentially selected (for example, the scanning signal lines 16x and 16y are selected in this order), and one of the two adjacent data signal lines (for example, The data signal line 15x) is supplied with a positive polarity signal potential in the first horizontal scanning period (for example, including the writing period of the pixel electrodes 17a and 17b), and is supplied in the second horizontal scanning period (for example, the pixel electrode 17e).
- a negative polarity signal potential is supplied during the 17f writing period, and the other of the two data signal lines (for example, the data signal line 15X) is supplied with the first horizontal scanning period (for example, the pixel electrode 17A.
- a negative polarity signal potential is supplied to the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17E and 17F). It supplies a signal potential.
- the sub-pixel including the pixel electrode 17c (positive polarity) is “dark”
- the sub-pixel including the pixel electrode 17t (positive polarity) is “medium”
- the pixel electrode 17a (positive polarity) is set.
- the sub-pixel including “bright”, the sub-pixel including the pixel electrode 17b (plus polarity) is “bright”
- the sub-pixel including the pixel electrode 17s (plus polarity) is “medium”
- the pixel is “dark”, and the whole is as shown in FIG.
- the scanning signal lines are sequentially selected (for example, the scanning signal lines 16x and 16y are selected in this order), and one of the two adjacent data signal lines (for example, the data signal line 15x) is the first.
- the negative polarity signal potential is supplied during the horizontal scanning period (for example, including the writing period of the pixel electrodes 17a and 17b), and the positive polarity is applied during the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17e and 17f).
- a signal potential is supplied, and the other of the two data signal lines (for example, the data signal line 15X) has a positive polarity signal in the first horizontal scanning period (for example, the writing period of the pixel electrodes 17A and 17B).
- a potential is supplied, and a negative polarity signal potential is supplied in the second horizontal scanning period (for example, including the writing period of the pixel electrodes 17E and 17F).
- the sub-pixel including the pixel electrode 17c (minus polarity) is “dark”
- the sub-pixel including the pixel electrode 17t (minus polarity) is “medium”
- the pixel electrode 17a (minus polarity) is The sub-pixel including “bright”
- the sub-pixel including the pixel electrode 17b (minus polarity) is “bright”
- the sub-pixel including the pixel electrode 17s (minus polarity) is “medium”
- the pixel becomes “dark”, and the whole is as shown in FIG.
- the scanning signal line is arranged at the center of the pixel
- two pixel electrodes pixel electrodes corresponding to the bright sub-pixels
- Two pixel electrodes corresponding to the dark subpixel are arranged at both ends of the pixel, and two pixel electrodes corresponding to the middle subpixel (electrically floating) are respectively connected to the bright subpixel.
- the four pixel electrodes dark sub-pixels / medium sub-pixels that are disposed between the sub-pixels and the dark sub-pixels, and are electrically floating while the storage capacitor line and the storage capacitor line extending part are separated from the scanning signal line It can function as an electrical shield pattern.
- the jumping of charges into the four pixel electrodes is suppressed to avoid burn-in of the middle and dark subpixels as much as possible, and the bright and subpixels belonging to different pixels. Pixels can be prevented from being adjacent to each other, and a more natural display can be achieved than the conventional liquid crystal display device.
- the drain lead-out wiring can be shortened, and the effect of reducing the disconnection rate and improving the aperture ratio can be obtained.
- the redundant effect of the storage capacitor wiring can be obtained by the storage capacitor wiring extending portion. For example, even if the storage capacitor wiring is disconnected between the part where the storage capacitor wiring extension part branches and the part where the storage capacitor wiring extension part merges, the storage capacitor wiring extension part becomes a bypass route and the part after the disconnection point A storage capacitor wiring signal (for example, a Vcom signal equal to the potential of the common electrode) can be sent to the portion.
- the polarity of the signal potential supplied to each data signal line is inverted every horizontal scanning period (1H), so that when the transistor is turned off between two adjacent pixels in the column direction.
- the direction of pulling in the potential is reversed, and flickering can be suppressed.
- by supplying a signal potential of opposite polarity to each of two adjacent data signal lines in the same horizontal scanning period the potential when the transistor is OFF between two adjacent pixels in the row direction. The retraction direction is reversed, and flickering can be suppressed.
- the present liquid crystal display unit and the liquid crystal display device are configured as follows. That is, the two polarizing plates A and B are pasted on both sides of the liquid crystal panel (5a to 5h, 5j and 5k) so that the polarizing axis of the polarizing plate A and the polarizing axis of the polarizing plate B are orthogonal to each other. . In addition, you may laminate
- drivers (gate driver 202, source driver 201) are connected.
- TCP Tape career Package
- an ACF Anisotropic Conductive Film
- the TCP on which the driver is placed is punched out of the carrier tape, aligned with the panel terminal electrode, and heated and pressed.
- a circuit board 209 PWB: Printed wiring board
- the liquid crystal display unit 200 is completed.
- a display control circuit 209 is connected to each driver (201, 202) of the liquid crystal display unit via the circuit board 203, and integrated with the lighting device (backlight unit) 204. As a result, the liquid crystal display device 210 is obtained.
- potential polarity means greater than or equal to a reference potential (plus) or less than or equal to a reference potential (minus).
- the reference potential may be Vcom (common potential) which is the potential of the common electrode (counter electrode) or any other potential.
- FIG. 30 is a block diagram showing a configuration of the present liquid crystal display device.
- the liquid crystal display device includes a display unit (liquid crystal panel), a source driver (SD), a gate driver (GD), and a display control circuit.
- the source driver drives the data signal line
- the gate driver drives the scanning signal line
- the display control circuit controls the source driver and the gate driver.
- the display control circuit controls a display operation from a digital video signal Dv representing an image to be displayed, a horizontal synchronization signal HSY and a vertical synchronization signal VSY corresponding to the digital video signal Dv from an external signal source (for example, a tuner). For receiving the control signal Dc. Further, the display control circuit, based on the received signals Dv, HSY, VSY, and Dc, uses a data start pulse signal SSP and a data clock as signals for displaying an image represented by the digital video signal Dv on the display unit.
- Signal SCK digital image signal DA (signal corresponding to video signal Dv) representing an image to be displayed
- gate start pulse signal GSP gate start pulse signal GSP
- gate clock signal GCK gate driver output control signal (scanning signal output control signal) GOE is generated and these are output.
- the video signal Dv is output as a digital image signal DA from the display control circuit, and a pulse corresponding to each pixel of the image represented by the digital image signal DA.
- a data clock signal SCK is generated as a signal consisting of the above, a data start pulse signal SSP is generated as a signal that becomes high level (H level) for a predetermined period every horizontal scanning period based on the horizontal synchronization signal HSY, and the vertical synchronization signal VSY
- the gate start pulse signal GSP is generated as a signal that becomes H level only for a predetermined period every one frame period (one vertical scanning period), and the gate clock signal GCK is generated based on the horizontal synchronization signal HSY, and the horizontal synchronization signal HSY and
- a gate driver output control signal GOE is generated based on the control signal Dc.
- the digital image signal DA the polarity inversion signal POL for controlling the polarity of the signal potential (data signal potential)
- the data start pulse signal SSP the data start pulse signal SSP
- the data clock signal SCK the data clock signal SCK
- the gate start pulse signal GSP, the gate clock signal GCK, and the gate driver output control signal GOE are input to the gate driver.
- the source driver is based on the digital image signal DA, the data clock signal SCK, the data start pulse signal SSP, and the polarity inversion signal POL, and an analog potential (signal corresponding to the pixel value in each scanning signal line of the image represented by the digital image signal DA. Potential) is sequentially generated for each horizontal scanning period, and these data signals are output to data signal lines (for example, 15x and 15X).
- the gate driver generates a gate-on pulse signal based on the gate start pulse signal GSP, the gate clock signal GCK, and the gate driver output control signal GOE, and outputs them to the scanning signal line, thereby selecting the scanning signal line. Drive.
- the data signal line and the scanning signal line of the display unit are driven by the source driver and the gate driver, so that the data is transmitted through the transistor (TFT) connected to the selected scanning signal line.
- TFT transistor
- a signal potential is written from the signal line to the pixel electrode.
- a voltage is applied to the liquid crystal layer of each subpixel, whereby the amount of light transmitted from the backlight is controlled, and an image indicated by the digital video signal Dv is displayed on each subpixel.
- FIG. 31 is a block diagram showing a configuration of a liquid crystal display device 800 for a television receiver.
- the liquid crystal display device 800 includes a liquid crystal display unit 84, a Y / C separation circuit 80, a video chroma circuit 81, an A / D converter 82, a liquid crystal controller 83, a backlight drive circuit 85, a backlight 86, A microcomputer 87 and a gradation circuit 88 are provided.
- the liquid crystal display unit 84 includes a liquid crystal panel and a source driver and a gate driver for driving the liquid crystal panel.
- a composite color video signal Scv as a television signal is input from the outside to the Y / C separation circuit 80, where it is separated into a luminance signal and a color signal.
- These luminance signals and color signals are converted into analog RGB signals corresponding to the three primary colors of light by the video chroma circuit 81, and the analog RGB signals are further converted into digital RGB signals by the A / D converter 82. .
- This digital RGB signal is input to the liquid crystal controller 83.
- the Y / C separation circuit 80 also extracts horizontal and vertical synchronization signals from the composite color video signal Scv input from the outside, and these synchronization signals are also input to the liquid crystal controller 83 via the microcomputer 87.
- the liquid crystal display unit 84 receives a digital RGB signal from the liquid crystal controller 83 at a predetermined timing together with a timing signal based on the synchronization signal.
- the gradation circuit 88 generates gradation potentials for the three primary colors R, G, and B for color display, and these gradation potentials are also supplied to the liquid crystal display unit 84.
- the backlight drive is performed under the control of the microcomputer 87.
- the circuit 85 drives the backlight 86, so that light is irradiated to the back surface of the liquid crystal panel.
- the microcomputer 87 controls the entire system including the above processing.
- the video signal (composite color video signal) input from the outside includes not only a video signal based on television broadcasting but also a video signal captured by a camera, a video signal supplied via an Internet line, and the like.
- the liquid crystal display device 800 can display images based on various video signals.
- a tuner unit 90 is connected to the liquid crystal display device 800, thereby constituting the present television receiver.
- the tuner unit 90 extracts a signal of a channel to be received from a received wave (high frequency signal) received by an antenna (not shown), converts the signal to an intermediate frequency signal, and detects the intermediate frequency signal, thereby detecting the television.
- a composite color video signal Scv as a signal is taken out.
- the composite color video signal Scv is input to the liquid crystal display device 800 as described above, and an image based on the composite color video signal Scv is displayed by the liquid crystal display device 800.
- FIG. 33 is an exploded perspective view showing a configuration example of the present television receiver.
- the present television receiver has a first housing 801 and a second housing 806 in addition to the liquid crystal display device 800 as its constituent elements.
- the housing 801 and the second housing 806 are sandwiched and wrapped.
- the first housing 801 is formed with an opening 801a through which an image displayed on the liquid crystal display device 800 is transmitted.
- the second housing 806 covers the back side of the liquid crystal display device 800, is provided with an operation circuit 805 for operating the display device 800, and a support member 808 is attached below. Yes.
- the present invention is not limited to the above-described embodiments, and those obtained by appropriately modifying the above-described embodiments based on common general technical knowledge and those obtained by combining them are also included in the embodiments of the present invention.
- the liquid crystal panel and the liquid crystal display device of the present invention are suitable for a liquid crystal television, for example.
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Abstract
Description
11a・11b・11e・11f コンタクトホール
12a・12b・12e・12f トランジスタ
12A・12B・12E・12F トランジスタ
15x 15X データ信号線
16x・16y 走査信号線
17a~17h 画素電極
17A~17H 画素電極
18p~18r 保持容量配線
18α~18δ サブ配線
22 無機ゲート絶縁膜
24 半導体層
25 無機層間絶縁膜
26 有機層間絶縁膜
37a・37b・37A・37B 結合容量電極
84 液晶表示ユニット
100~103 画素
800 液晶表示装置
図1は実施の形態1にかかる液晶パネルの一部を示す等価回路図である。図1に示すように、本液晶パネルは、列方向(図中上下方向)に延伸するデータ信号線(15x・15X)、行方向(図中左右方向)に延伸する走査信号線(16x・16y)、行および列方向に並べられた画素(100~103)、保持容量配線(18p・18q・18r)、および共通電極(対向電極)comを備え、各画素の構造は同一である。なお、画素100・101が含まれる画素列と、画素102・103が含まれる画素列とが隣接し、画素100・102が含まれる画素行と、画素101・103が含まれる画素行とが隣接している。
図21は実施の形態2にかかる液晶パネルの一部を示す等価回路図である。同図に示すように、本液晶パネルでは、1つの画素に対応して1本のデータ信号線と1本の走査信号線とが設けられており、列方向に隣接する2つの画素に対応して1本の保持容量配線が設けられている。また、1つの画素に3つの画素電極が設けられており、画素100に設けられた3つの画素電極17a・17b・17d、画素101に設けられた3つの画素電極17e・17f・17hが一列に配されるともに、画素102に設けられた3つの画素電極17A・17B・17D、画素103に設けられた3つの画素電極117E・17F・17Hが一列に配され、画素電極17aと17A、画素電極17bと17B、画素電極17dと17D、画素電極17eと17E、画素電極17fと17F、画素電極17hと17Hがそれぞれ行方向に隣接している。
また、ソース電極8fはデータ信号線15xに接続される。ドレイン電極9fはドレイン引き出し配線27fに接続され、ドレイン引き出し配線27fは、同層に形成された結合容量電極37fに繋がるとともにコンタクトホール11fを介して画素電極17fに接続され、結合容量電極37fは層間絶縁膜を介して画素電極17hと重なっており、これによって画素電極17f・17h間の結合容量Cfh(図1参照)が形成される。
図25は実施の形態3にかかる液晶パネルの一部を示す等価回路図である。図25に示すように、本液晶パネルは、列方向(図中上下方向)に延伸するデータ信号線(15x・15X)、行方向(図中左右方向)に延伸する走査信号線(16x・16y)、行および列方向に並べられた画素(100~103)、保持容量配線(18p・18q・18r)、および共通電極(対向電極)comを備え、各画素の構造は同一である。なお、画素100・101が含まれる画素列と、画素102・103が含まれる画素列とが隣接し、画素100・102が含まれる画素行と、画素101・103が含まれる画素行とが隣接している。
Claims (49)
- 走査信号線と、該走査信号線に接続されたスイッチング素子と、データ信号線とを備え、1つの画素領域に、スイッチング素子を介して上記データ信号線に接続された第1および第2画素電極と、容量を介して該第1画素電極に接続された第3画素電極とが設けられたアクティブマトリクス基板であって、
画素領域はこれを横切る上記走査信号線によって2つの部分に分けられ、その一方に第1画素電極が配されるとともに、他方に第2画素電極が配されていることを特徴とするアクティブマトリクス基板。 - 平面的に視て、上記第1および第2画素電極それぞれが上記走査信号線に隣接して配されていることを特徴とする請求項1記載のアクティブマトリクス基板。
- 上記2つの部分の一方に第1および第3画素電極が配されていることを特徴とする請求項1または2記載のアクティブマトリクス基板。
- 第3画素電極のエッジの一部と重なる第1保持容量配線と、平面的に視て、第1保持容量配線から枝分かれして上記エッジの残部と重なるかあるいはその外側を通るように延伸して再び第1保持容量配線に合流する第1保持容量配線延伸部とを備えることを特徴とする請求項3記載のアクティブマトリクス基板。
- 第1保持容量配線延伸部は第1画素電極と重なっていることを特徴とする請求項4に記載のアクティブマトリクス基板。
- 第1保持容量配線延伸部が画素領域ごとに設けられており、列方向に隣り合う第1保持容量配線延伸部同士が互いに接続されていることを特徴とする請求項4または5記載のアクティブマトリクス基板。
- 第1保持容量配線は、隣接する2つの画素領域に対応して設けられていることを特徴とする請求項4~6のいずれか1項に記載のアクティブマトリクス基板。
- 第3画素電極のエッジの一部と重なる第1保持容量配線と、第1画素電極と保持容量を形成する第1サブ配線とを備えるとともに、第1保持容量配線および第1サブ配線間には、両配線に接続する渡し電極が1画素領域あたり2つ設けられており、第1サブ配線およびこの2つの渡し電極が、上記第3画素電極のエッジの残部と重なるかあるいはその外側を通るように配されていることを特徴とする請求項3記載のアクティブマトリクス基板。
- 各画素電極下に設けられる層間絶縁膜は、第3画素電極および第1保持容量配線と重畳する部分の少なくとも一部と、第3画素電極および第1保持容量配線延伸部と重畳する部分の少なくとも一部とが薄くなっていることを特徴とする請求項4に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなるが、第3画素電極および第1保持容量配線と重畳する部分の少なくとも一部と、第3画素電極および第1保持容量配線延伸部と重畳する部分の少なくとも一部とについては、有機絶縁膜が除去されていることを特徴とする請求項9に記載のアクティブマトリクス基板。
- 第3画素電極のエッジの一部と重なる第1保持容量配線と、コンタクトホールを介して第1保持容量配線に接続された第1シールド電極とを備え、第1シールド電極は、第3画素電極と同層に形成されるとともに、平面的に視て、上記エッジの残部の外側を通るように延伸していることを特徴とする請求項3に記載のアクティブマトリクス基板。
- 各画素電極の下層に設けられる層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなることを特徴とする請求項11に記載のアクティブマトリクス基板。
- 第1画素電極と電気的に接続された第1結合容量電極を備え、
第1結合容量電極は、各画素電極下に設けられる層間絶縁膜を介して第3画素電極と重なっていることを特徴とする請求項1~12のいずれか1項に記載のアクティブマトリクス基板。 - 上記スイッチング素子は第1トランジスタを含み、第1トランジスタの一導通端子から引き出された引き出し配線と第1画素電極とがコンタクトホールを介して接続され、該引き出し配線と第1結合容量電極とが同層で繋がっていることを特徴とする請求項13に記載のアクティブマトリクス基板。
- 上記スイッチング素子は第1トランジスタを含み、第1トランジスタの一導通端子から引き出された引き出し配線と第1画素電極とがコンタクトホールを介して接続され、コンタクトホールを介して第1画素電極に接続された中継配線と第1結合容量電極とが同層で繋がっていることを特徴とする請求項13に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は、第3画素電極および第1結合容量電極と重畳する部分の少なくとも一部が薄くなっていることを特徴とする請求項13に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなるが、第3画素電極および第1結合容量電極と重畳する部分の少なくとも一部については、有機絶縁膜が除去されていることを特徴とする請求項16に記載のアクティブマトリクス基板。
- 容量を介して第2画素電極に接続された第4画素電極を備え、
上記2つの部分の一方に第2および第4画素電極が配されていることを特徴とする請求項1~17のいずれか1項に記載のアクティブマトリクス基板。 - 第4画素電極のエッジの一部と重なる第2保持容量配線と、平面的に視て、第2保持容量配線から枝分かれして上記エッジの残部と重なるかあるいはその外側を通るように延伸して再び第2保持容量配線に合流する第2保持容量配線延伸部とを備えることを特徴とする請求項18記載のアクティブマトリクス基板。
- 第2保持容量配線延伸部は第2画素電極と重なっていることを特徴とする請求項19に記載のアクティブマトリクス基板。
- 第2保持容量配線延伸部が画素領域ごとに設けられており、列方向に隣り合う第2保持容量配線延伸部同士が互いに接続されていることを特徴とする請求項19または20記載のアクティブマトリクス基板。
- 第2保持容量配線は、隣接する2つの画素領域に対応して設けられていることを特徴とする請求項19~21のいずれか1項に記載のアクティブマトリクス基板。
- 第4画素電極のエッジの一部と重なる第2保持容量配線と、第2画素電極と保持容量を形成する第2サブ配線とを備えるとともに、第2保持容量配線および第2サブ配線間には、両配線に接続する渡し電極が1画素領域あたり2つ設けられており、第2保持容量配線およびこの2つの渡し電極が、上記第4画素電極のエッジの残部と重なるかあるいはその外側を通るように配されていることを特徴とする請求項18記載のアクティブマトリクス基板。
- 各画素電極下に設けられる層間絶縁膜は、第4画素電極および第2保持容量配線と重畳する部分の少なくとも一部と、第4画素電極および第2保持容量配線延伸部と重畳する部分の少なくとも一部とが薄くなっていることを特徴とする請求項19に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなるが、第4画素電極および第2保持容量配線と重畳する部分の少なくとも一部と、第4画素電極および第2保持容量配線延伸部と重畳する部分の少なくとも一部とについては、有機絶縁膜が除去されていることを特徴とする請求項24に記載のアクティブマトリクス基板。
- 第4画素電極のエッジの一部と重なる第2保持容量配線と、コンタクトホールを介して第2保持容量配線に接続された第2シールド電極とを備え、第2シールド電極は、第4画素電極と同層に形成されるとともに、平面的に視て、上記エッジの残部の外側を通るように延伸していることを特徴とする請求項18に記載のアクティブマトリクス基板。
- 各画素電極下層に設けられる層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなることを特徴とする請求項26に記載のアクティブマトリクス基板。
- 第2画素電極と電気的に接続された第2結合容量電極を備え、
第2結合容量電極は、各画素電極下に設けられる層間絶縁膜を介して第4画素電極と重なっていることを特徴とする請求項18~27のいずれか1項に記載のアクティブマトリクス基板。 - 上記スイッチング素子は第2トランジスタを含み、第2トランジスタの一導通端子から引き出された引き出し配線と第2画素電極とがコンタクトホールを介して接続され、該引き出し配線と第2結合容量電極とが同層で繋がっていることを特徴とする請求項28に記載のアクティブマトリクス基板。
- 上記スイッチング素子は第2トランジスタを含み、第2トランジスタの一導通端子から引き出された引き出し配線と第2画素電極とがコンタクトホールを介して接続され、コンタクトホールを介して第2画素電極に接続された中継配線と第2結合容量電極とが同層で繋がっていることを特徴とする請求項28に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は、第4画素電極および第2結合容量電極と重畳する部分の少なくとも一部が薄くなっていることを特徴とする請求項28に記載のアクティブマトリクス基板。
- 上記層間絶縁膜は無機絶縁膜とこれよりも厚い有機絶縁膜とからなるが、第4画素電極および第2結合容量電極と重畳する部分の少なくとも一部については、有機絶縁膜が除去されていることを特徴とする請求項31に記載のアクティブマトリクス基板。
- 上記スイッチング素子はさらに第2トランジスタを含み、第2トランジスタの一導通端子から引き出された引き出し配線と第2画素電極とがコンタクトホールを介して接続されていることを特徴とする請求項14または15に記載のアクティブマトリクス基板。
- 第1および第2画素電極と同層に、これら両電極を連結する連結電極が設けられていることを特徴とする請求項1~33のいずれか1項に記載のアクティブマトリクス基板。
- 容量を介して第2画素電極に接続された第4画素電極と、第1画素電極と電気的に接続された第1結合容量電極と、第2画素電極と電気的に接続された第2結合容量電極とを備え、
第1結合容量電極は、各画素電極下に設けられる層間絶縁膜を介して第3画素電極と重なっているとともに、第2結合容量電極は、上記層間絶縁膜を介して第4画素電極と重なっており、
第1結合容量電極および第3画素電極の重なり面積と、第2結合容量電極および第4画素電極の重なり面積とが互いに異なっていることを特徴とする請求項1~34のいずれか1項に記載のアクティブマトリクス基板。 - 上記走査信号線は画素領域の中央を横切っていることを特徴とする請求項1~35のいずれか1項に記載のアクティブマトリクス基板。
- 容量を介して第2画素電極に接続された第4画素電極を備え、
上記2つの部分の一方に第1および第3画素電極が配されるとともに、他方に第2および第4画素電極が配され、
第1画素電極および第3画素電極の間隙と、第2画素電極および第4画素電極の間隙とが、配向規制構造物として機能することを特徴とする請求項1~36のいずれか1項に記載のアクティブマトリクス基板。 - 容量を介して第3画素電極に接続された第5画素電極を備えることを特徴とする請求項1~37のいずれか1項に記載のアクティブマトリクス基板。
- 容量を介して第2画素電極に接続された第4画素電極と、容量を介して該第4画素電極に接続された第6画素電極とを備えることを特徴とする請求項1~38のいずれか1項に記載のアクティブマトリクス基板。
- 走査信号線と、データ信号線と、該走査信号線および該データ信号線に接続された第1トランジスタと、上記走査信号線および上記データ信号線に接続された第2トランジスタとを備えたアクティブマトリクス基板であって、
1つの画素領域に、第1トランジスタに接続された第1画素電極と、第2トランジスタに接続された第2画素電極と、容量を介して上記第1画素電極に接続された第3画素電極とが設けられ、
上記第1および第2画素電極が間隙を挟んで向かい合うように配され、
上記走査信号線は、この間隙と重なるように上記画素領域を横切っていることを特徴とするアクティブマトリクス基板。 - 上記画素領域に、容量を介して上記第2画素電極に接続された第4画素電極が設けられ、
平面的に視たときに、第1および第3画素電極は、走査信号線に対して45度をなす部分と135度をなす部分とを含むスリット状の境界によって区切られ、
平面的に視たときに、第2および第4画素電極は、走査信号線に対して225度をなす部分と315度をなす部分とを含むスリット状の境界によって区切られていることを特徴とする請求項40記載のアクティブマトリクス基板。 - 第1画素電極に電気的に接続され、第3画素電極に重なる第1結合容量電極と、第2画素電極に電気的に接続され、第4画素電極に重なる第2結合容量電極とを備え、
平面的に視たときに、第1結合容量電極の少なくとも一部は走査信号線に対して45度あるいは135度をなし、
平面的に視たときに、第2結合容量電極の少なくとも一部は走査信号線に対して225度あるいは315度をなすことを特徴とする請求項41記載のアクティブマトリクス基板。 - 平面的に視たときに、上記第3画素電極と走査信号線との間には第1画素電極の一部が配され、上記第4画素電極と走査信号線との間には第2画素電極の一部が配されていることを特徴とする請求項41記載のアクティブマトリクス基板。
- 上記画素領域およびその前段の画素領域それぞれに重なる保持容量配線と、上記画素領域およびその次段の画素領域それぞれに重なる保持容量配線とを備え、
平面的に視たときに、これら2つの保持容量配線の一方から、第3画素電極の上記データ信号線に沿うエッジと重なるように保持容量配線延伸部が延伸し、他方から、第4画素電極の上記データ信号線に隣接するデータ信号線に沿うエッジと重なるように保持容量配線延伸部が延伸していることを特徴とする請求項41記載のアクティブマトリクス基板。 - 請求項42項に記載のアクティブマトリクス基板と、これに対向し、配向規制構造物を備えた対向基板とを備え、
上記第1結合容量電極の走査信号線に対して45度あるいは135度をなす部分が上記配向規制構造物の下に配され、
上記第2結合容量電極の走査信号線に対して225度あるいは315度をなす部分が上記配向規制構造物の下に配されていることを特徴とする液晶パネル。 - 請求項1~44のいずれか1項に記載のアクティブマトリクス基板を備えた液晶パネル。
- 請求項46記載の液晶パネルとドライバとを備えることを特徴とする液晶表示ユニット。
- 請求項47記載の液晶表示ユニットと光源装置とを備えることを特徴とする液晶表示装置。
- 請求項48記載の液晶表示装置と、テレビジョン放送を受信するチューナー部とを備えることを特徴とするテレビジョン受像機。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/922,756 US20110012815A1 (en) | 2008-03-31 | 2008-10-30 | Active matrix substrate, liquid crystal panel, liquid crystal display device, liquid crystal display unit, and television receiver |
| EP08873751A EP2259134A4 (en) | 2008-03-31 | 2008-10-30 | ACTIVE MATRIX CARD, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY DEVICE, LIQUID CRYSTAL DISPLAY UNIT, AND TELEVISION RECEIVER |
| CN200880127910.9A CN101960370B (zh) | 2008-03-31 | 2008-10-30 | 有源矩阵基板、液晶面板、液晶显示装置、液晶显示单元、电视接收机 |
| JP2010505260A JP5107421B2 (ja) | 2008-03-31 | 2008-10-30 | アクティブマトリクス基板、液晶パネル、液晶表示装置、液晶表示ユニット、テレビジョン受像機 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008090977 | 2008-03-31 | ||
| JP2008-090977 | 2008-03-31 |
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| WO2009122608A1 true WO2009122608A1 (ja) | 2009-10-08 |
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| PCT/JP2008/069735 Ceased WO2009122608A1 (ja) | 2008-03-31 | 2008-10-30 | アクティブマトリクス基板、液晶パネル、液晶表示装置、液晶表示ユニット、テレビジョン受像機 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110012815A1 (ja) |
| EP (1) | EP2259134A4 (ja) |
| JP (1) | JP5107421B2 (ja) |
| CN (1) | CN101960370B (ja) |
| WO (1) | WO2009122608A1 (ja) |
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| WO2011077867A1 (ja) * | 2009-12-24 | 2011-06-30 | シャープ株式会社 | 表示装置、表示装置の駆動方法、液晶表示装置、テレビジョン受像機 |
| JP2011150016A (ja) * | 2010-01-19 | 2011-08-04 | Casio Computer Co Ltd | 液晶表示装置 |
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| CN102754021B (zh) * | 2010-02-15 | 2015-04-15 | 夏普株式会社 | 有源矩阵基板、液晶面板、液晶显示装置以及电视接收机 |
| CN102998855B (zh) * | 2012-11-16 | 2015-06-17 | 京东方科技集团股份有限公司 | 像素单元、薄膜晶体管阵列基板及液晶显示器 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2009122608A1 (ja) | 2011-07-28 |
| JP5107421B2 (ja) | 2012-12-26 |
| EP2259134A1 (en) | 2010-12-08 |
| CN101960370A (zh) | 2011-01-26 |
| EP2259134A4 (en) | 2012-02-01 |
| CN101960370B (zh) | 2014-01-15 |
| US20110012815A1 (en) | 2011-01-20 |
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