JP2011095475A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device having an excellent display grade. <P>SOLUTION: The device includes: a counter substrate 300 arranged opposite to an array substrate 200, and having the array substrate 200, shielding layers 340 each arranged between a first transmission domain TR and a second transmission domain TG and between the second transmission domain TG and a third transmission domain TB, a red color filter layer 320R arranged on the first transmission domain TR, a green color filter layer 320G arranged on the second transmission domain TG and laminated on the shielding layer 340, and a blue color filter layer 320B arranged on the third transmission domain TB; a spacer SP formed on the array substrate 200, facing the green color filter layer 320G laminated on the shielding layer 340, and forming a cell gap between the array substrate 200 and the counter substrate 300; and a liquid crystal layer 400 held in the cell gap formed by the spacer SP. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device.

  The liquid crystal display device has a configuration in which a liquid crystal layer is held between an array substrate and a counter substrate. The array substrate and the counter substrate are arranged with the cell gap maintained. A liquid crystal material is sealed in the cell gap. The cell gap is held by a spacer disposed between the array substrate and the counter substrate.

  For example, according to Patent Document 1, a liquid crystal display device is disclosed that includes a liquid crystal layer and a drive substrate and a counter substrate that face each other with a plurality of spacers arranged in the liquid crystal layer interposed therebetween. A black matrix layer is formed in a lattice shape on the glass substrate of the counter substrate, and a color layer is formed on the glass substrate so as to cover the black matrix layer. An overcoat layer is formed on the color layer, and columnar spacers are formed on the overcoat layer at regular intervals. As the spacer, a gap is formed between the spacer formed on the surface of the counter substrate where the surface is flat and the top abuts against the drive substrate and the surface portion where the recess of the counter substrate is formed, and between the top and the drive substrate. Spacers.

JP 2008-281594 A

  An object of the present invention is to provide a liquid crystal display device with good display quality.

  According to one aspect of the present invention, the array substrate, the light shielding layer disposed between the first transmission region and the second transmission region, and between the second transmission region and the third transmission region, and the first transmission A red color filter layer disposed in the region, a green color filter layer disposed in the second transmission region and laminated on the light shielding layer, and a blue color filter layer disposed in the third transmission region. And a counter substrate disposed to face the array substrate, and facing the green color filter layer formed on the array substrate and laminated on the light shielding layer, and between the array substrate and the counter substrate It is characterized by comprising a spacer for forming a cell gap therebetween, and a liquid crystal layer held in the cell gap formed by the spacer.

  According to another aspect of the invention, the array substrate is disposed between the first transmission region and the second transmission region and between the second transmission region and the third transmission region, and is formed to have the first width. A light-shielding layer having a second light-shielding part connected to the first light-shielding part and the first light-shielding part and having a second width greater than the first width; a red color filter layer disposed in the first transmission region; A green color filter layer disposed in the second transmission region and stacked on the second light shielding portion, and a blue color filter layer disposed in the third transmission region, and disposed so as to face the array substrate A counter substrate formed on the array substrate and facing the green color filter layer stacked on the second light-shielding portion and forming a cell gap between the array substrate and the counter substrate; Characterized by comprising a liquid crystal layer held in the cell gap formed by the spacer.

  According to the present invention, a liquid crystal display device with good display quality can be provided.

FIG. 1 schematically shows a configuration of a liquid crystal display panel according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing one configuration of the liquid crystal display panel shown in FIG. FIG. 3 is a plan view schematically showing the configuration of the light shielding layer and the color filter layer of the liquid crystal display panel according to the first embodiment. FIG. 4 is a cross-sectional view schematically showing the configuration of the light shielding layer and the color filter layer of the liquid crystal display panel according to the first embodiment. FIG. 5 is a plan view schematically showing the configuration of the first light shielding part and the second light shielding part of the light shielding layer of the liquid crystal display panel according to the second embodiment. FIG. 6 is a plan view schematically showing the configuration of the light shielding layer and the color filter layer of the liquid crystal display panel according to the second embodiment. FIG. 7 is a cross-sectional view schematically showing the configuration of the light shielding layer and the color filter layer of the liquid crystal display panel according to the second embodiment. FIG. 8 is a plan view schematically showing another configuration of the light shielding layer and the color filter layer of the liquid crystal display panel according to the second embodiment. FIG. 9 is a plan view schematically showing a configuration of a light shielding layer and a color filter layer of a liquid crystal display panel according to a modification.

  A liquid crystal display device according to an embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the liquid crystal display device includes a liquid crystal display panel 100 having a substantially rectangular flat plate shape. The liquid crystal display panel 100 includes a pair of substrates, that is, an array substrate 200 and a counter substrate 300, and a liquid crystal layer 400 held between the array substrate 200 and the counter substrate 300. The array substrate 200 and the counter substrate 300 are bonded together by a seal member 110.

  The liquid crystal display panel 100 includes a display region 120 configured by a plurality of pixels PX arranged in a matrix. The seal member 110 is arranged in a series of loops so as to surround the display region 120. Further, the liquid crystal display panel 100 includes a light shielding member 112 disposed between the display region 120 and the seal member 110.

  The array substrate 200 includes a plurality of scanning lines Y (1, 2, 3,..., M) extending along the first direction H of the pixel PX and the second direction V of the pixel PX in the display region 120. And a plurality of signal lines X (1, 2, 3,..., N), switching elements 220 arranged at intersections of the signal lines X and scanning lines Y in each pixel PX, and the pixels PX, respectively. And a pixel electrode 230 connected to the switching element 220. The scanning line Y and the signal line X are arranged so as to cross each other through an insulating layer (not shown).

  The counter substrate 300 includes a counter electrode 330 that faces each of the plurality of pixel electrodes 230 in the display region 120.

  In addition, the liquid crystal display panel 100 includes a connection part 131 disposed in a non-display area 130 located outside the display area 120. The connecting portion 131 can be connected to a driving IC chip or a flexible wiring board that functions as a signal supply source that supplies various signals necessary for driving the liquid crystal display panel 100. In the example shown in FIG. 1, the connection portion 131 is formed on the extended portion 200 </ b> A of the array substrate 200 that extends outward from the end portion 300 </ b> A of the counter substrate 300.

  Each of the scanning lines Y (1, 2, 3,..., M) arranged in the display area 120 is drawn out to the non-display area 130 and connected to the connection unit 131. Similarly, each of the signal lines X (1, 2, 3,..., N) is drawn out to the non-display area 130 and connected to the connection portion 131.

  As shown in FIG. 2, the array substrate 200 is formed using an insulating substrate 210 having light transmissivity such as glass.

  The switching element 220 is configured by a thin film transistor including a semiconductor layer 220SC formed of, for example, polysilicon. The semiconductor layer 220SC is disposed on the insulating substrate 210. The semiconductor layer 220SC is covered with a gate insulating film 242.

  The gate electrode 220G of the switching element 220 is disposed on the gate insulating film 242 and faces the channel region of the semiconductor layer 220SC. The gate electrode 220G is connected to a scanning line Y (not shown) (or the gate electrode 220G is formed integrally with the scanning line Y). The gate electrode 220G is covered with a first interlayer insulating film 244.

  The source electrode 220 </ b> S and the drain electrode 220 </ b> D of the switching element 220 are disposed on the first interlayer insulating film 244. The source electrode 220S is connected to a signal line X (not shown) (or the source electrode 220S is formed integrally with the signal line X). The source electrode 220S is in contact with the source region of the semiconductor layer 220SC through a contact hole formed in the first interlayer insulating film 244 and the gate insulating film 242. The drain electrode 220D is in contact with the drain region of the semiconductor layer 220SC through a contact hole formed in the first interlayer insulating film 244 and the gate insulating film 242. The source electrode 220S and the drain electrode 220D are covered with a second interlayer insulating film 246.

  The pixel electrode 230 is disposed on the second interlayer insulating film 246 so as to correspond to each pixel PX. The pixel electrode 230 is electrically connected to the drain electrode 227 through a contact hole formed in the second interlayer insulating film 246. In the transmissive liquid crystal display panel 100, the pixel electrode 230 is formed of a light-transmitting conductive oxide material such as indium tin oxide (ITO) or indium zinc oxide (IZO). In the reflective liquid crystal display panel 100, the pixel electrode 230 is formed of a light-reflecting conductive part material such as aluminum (Al), silver (Ag), or molybdenum (Mo).

  The counter substrate 300 is formed using an insulating substrate 310 having optical transparency such as glass. The counter substrate 300 includes a color filter layer 320 including a light shielding layer 340, a red color filter layer 320R, a green color filter layer 320G, and a blue color filter layer 320B disposed on the insulating substrate 310. .

  The light shielding layer 340 is provided between the first transmission region TR and the second transmission region TG of each pixel PX, between the second transmission region TG and the third transmission region TB, and between the first transmission region TR and the third transmission region TB. Between each other. Here, the pixel PX corresponds to a region where the red color filter layer 320R, the green color filter layer 320G, and the blue color filter layer 320B are arranged. The first transmissive region TR, the second transmissive region TG, and the third transmissive region TB are regions that are not shielded by the light shielding layer 340, regions where the insulating substrate 310 is exposed from the light shielding layer 340, or light shielding although not described in detail. When the layer 340 is formed in a lattice shape, it corresponds to an inner region surrounded by the light shielding layer 340.

  The red color filter layer 320 </ b> R, the green color filter layer 320 </ b> G, and the blue color filter layer 320 </ b> B are disposed on the insulating substrate 310, and a part of each is stacked on the light shielding layer 340.

  More specifically, the red color filter layer 320R is disposed in the first transmission region TR. The green color filter layer 320G is disposed in the second transmission region TG. The blue color filter layer 320B is disposed in the third transmission region TB.

  The red color filter layer 320R is formed of a resin colored so as to transmit red light having a dominant wavelength (620 nm). The green color filter layer 320G is formed of a resin colored so as to transmit light having a green dominant wavelength (550 nm). The blue color filter layer 320B is formed of a resin colored so as to transmit light having a blue dominant wavelength (460 nm).

  The counter electrode 330 is disposed so as to face the pixel electrode 230. The counter electrode 330 is disposed on the color filter layer 320. The counter electrode 330 is formed of a light-transmitting conductive material such as ITO or IZO.

  The counter substrate 300 may include an overcoat layer disposed between the counter electrode 330 and the color filter layer 320. The overcoat layer is formed of a transparent resin material or the like.

  The array substrate 200 and the counter substrate 300 are arranged with a predetermined cell gap by a plurality of spacers SP formed on the array substrate 200. The spacer SP is formed on the second interlayer insulating film 246 of the array substrate 200 and extends toward the counter substrate 300. The spacer SP has a columnar shape, and is formed in a tapered shape that becomes gradually thinner from the array substrate 200 toward the counter substrate 300. In the present embodiment, the green color filter layer 320G that overlaps the light shielding layer 340 is located immediately above the spacer SP. That is, the spacer SP is not formed at a position facing the red color filter layer 320R and the blue color filter layer 320B. The height of each spacer SP facing the green color filter layer 320G is constant. The liquid crystal layer 400 is made of a liquid crystal material that includes liquid crystal molecules that are held in the cell gap formed by the spacers SP and sealed in the cell gap.

  The surfaces of the array substrate 200 and the counter substrate 300 are covered with alignment films 250 and 350 for controlling the alignment of liquid crystal molecules contained in the liquid crystal layer 400, respectively. Optical elements 260 and 360 are provided on the outer surfaces of the array substrate 200 and the counter substrate 300, respectively. These optical elements 260 and 360 include a polarizing plate whose polarization direction is set in accordance with the characteristics of the liquid crystal layer 400.

  The alignment film 250 of the array substrate 200 covers the spacer SP. In the example shown in FIG. 2, the alignment film 250 of the array substrate 200, the alignment film 350 of the counter substrate 300, and the counter electrode 330 are interposed between the spacer SP and the green color filter layer 320G.

  The seal member 110 is disposed in the non-display area 130. The light shielding member 112 is disposed in the non-display area 130 and is disposed between the display area 120 and the seal member 110. The light shielding member 112 is disposed on the counter substrate 300 side. A part of the light shielding member 112 is covered with the seal member 110.

  In the first embodiment, as shown in FIG. 3, the green color filter layer 320 </ b> G is disposed in the second transmission region TG and stacked on the light shielding layer 340. Here, the green color filter layer 320G is disposed on the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG. A part of the red color filter layer 320R disposed in the first transmission region TR is also disposed on the light shielding layer 340. Therefore, the boundary between the red color filter layer 320R and the green color filter layer 320G is located on the light shielding layer 340. The area where the green color filter layer 320G and the light shielding layer 340 overlap is larger than the area where the red color filter layer 320R and the light shielding layer 340 overlap. That is, the boundary between the red color filter layer 320R and the green color filter layer 320G is closer to the first transmission region TR side than to the second transmission region TG side.

  As shown in FIG. 4, the spacer SP formed on the array substrate 200 is disposed so as to face the green color filter layer 320 </ b> G laminated on the light shielding layer 340. In other words, the green color filter layer 320G and the light shielding layer 340 are located immediately above the spacer SP. Such a laminate of the light shielding layer 340 and the green color filter layer 320G serves as a pedestal for receiving the spacer SP. 3 and 4 show only the main part.

  By the way, in the liquid crystal dropping method (ODF) in which a liquid crystal material is dropped onto a region surrounded by the loop-shaped sealing member 110 and the array substrate 200 and the counter substrate 300 are bonded together, the volume inside the cell is predicted in advance and necessary. It is required to fill the liquid crystal material in an appropriate amount.

  However, when the color filter layer 320 is processed, the arrangement of two different color filter layers 320, for example, the green color filter layer 320G and the red color filter layer 320R, varies, and the green color filter layer 320G and the red color filter layer 320R may overlap on the light shielding layer 340. In the case where the spacer SP is designed to face the boundary between two different color filter layers 320, the array substrate 200 and the counter substrate 300 are bonded to each other due to misalignment between the array substrate 200 and the counter substrate 300. When the spacer SP formed on the counter substrate 300 is opposed to the overlapped portion of the two color filter layers 320 formed on the counter substrate 300, even if the spacer SP having a certain height is arranged, the actual cell is larger than the set cell gap. The gap can become thick. Also, when the film thickness of at least one color filter layer 320 forming the boundary varies, the set cell gap may differ from the actual cell gap. Therefore, when the cell gap is predicted and determined based on the height of the spacers SP formed on the array substrate 200, the actual volume inside the cell differs from the predicted volume inside the cell. May end up.

  When the dropped liquid crystal material is less than the volume inside the cell (insufficient filling), vacuum bubbles may be generated. When the dropped liquid crystal material is larger than the volume inside the cell (overfill), the cell gap May grow locally. If the variation in the cell gap due to the variation in the color filter layer 320 is 2% or more, it may be overfilled or underfilled.

  In particular, in recent years, there has been an increasing demand for higher color purity, and there is a tendency to increase the thickness of the color filter layer 320 (for example, about 2.5 μm to 3.0 μm). As the film thickness of the color filter layer 320 increases, the variation in film thickness increases. For example, regarding a color filter layer 320 having a film thickness of 2.5 μm to 3.0 μm, assuming a film thickness tolerance of ± 5%, a film thickness variation of 0.125 μm to 0.15 μm may occur.

  The cell gap is set to 3 to 4 μm, for example, and the variation of the cell gap is managed to be less than ± 10% from the viewpoint of transmittance and chromaticity. When the variation in the thickness of the color filter layer 320 described above contributes to the variation in the cell gap, the variation in the thickness of the color filter layer 320 corresponds to a variation of 3 to 5% with respect to the cell gap. Become. In addition, as one of means for achieving high-speed response, a technique for reducing the cell gap (for example, about 2.5 μm to 3.5 μm) has been studied. In such a configuration in which the cell gap is thinned, it is further required to reduce cell gap variation.

  On the other hand, in the first embodiment, the spacer SP faces the position where the green color filter layer 320G and the light shielding layer 340 overlap. In particular, since the area where the green color filter layer 320G and the light shielding layer 340 overlap is large, even if misalignment between the array substrate 200 and the counter substrate 300 occurs, the spacer SP has the green color filter layer 320G and the red color filter layer 320R. It can suppress facing opposite boundary part. As a result, it is possible to prevent cell gap variations due to misalignment between the array substrate 200 and the counter substrate 300. In particular, in the second transmission region TG where the green color filter layer 320G is disposed, there is almost no variation in the cell gap even if the film thickness of the green color filter layer 320G varies. Therefore, the difference between the actual volume inside the cell and the predicted volume inside the cell can be reduced, and when the liquid crystal dropping method is adopted, an appropriate amount of liquid crystal material is easily dropped with respect to the volume inside the cell. It becomes possible.

  Further, in the first embodiment, since the cell gap in the portion where the green color filter layer 320G is disposed is maintained, variation in the transmittance of the green wavelength can be reduced. Note that, for the red pixel PX in which the red color filter layer 320R is arranged and the blue pixel PX in which the blue color filter layer 320B is arranged, the cell gap varies due to the variation in the film thickness of the color filter layer 320. However, since the visibility of the red wavelength and the blue wavelength is lower than that of the green wavelength, the influence on the display caused by the variation in the cell gap in the portion where the red color filter layer 320R and the blue color filter layer 320B are arranged is not affected. small. Therefore, according to the first embodiment, the variation in the transmittance of the liquid crystal display device can be further reduced.

  In order to design the liquid crystal display device to display a white screen with high transmittance, it is optimal to set the cell gap so that the maximum transmittance is obtained at the green wavelength. In the case where the cell gap is set so that the maximum transmittance is obtained at the green wavelength, the spacer SP is disposed in the green color filter layer 320G, so that the cell gap in the portion where the green color filter layer 320G is disposed is maintained. , Fluctuations in the transmittance of the green wavelength can be suppressed. Note that the transmittance of the red wavelength and the blue wavelength can be adjusted by a voltage applied to the liquid crystal layer, and a white screen with high transmittance with little color shift can be easily displayed.

  In addition, by forming the green color filter layer 320G thicker than the red color filter layer 320R and the blue color filter layer 320B, the color purity of the green wavelength with high visibility is increased. A liquid crystal display device having a high value can be obtained. However, as described above, the greater the thickness of the green color filter layer 320G, the greater the variation in the thickness of the green color filter layer 320G. In the first embodiment, since the spacer SP faces the green color filter layer 320G, even if the film thickness variation of the green color filter layer 320G is large, the cell gap variation can be reduced. Therefore, according to the first embodiment, even when the color purity is designed to be high, the cell gap variation can be reduced. In addition, even when the cell gap is designed to be thin for high-speed response, variations in the cell gap can be reduced.

  As described above, according to the first embodiment, it is possible to provide a liquid crystal display device with good display quality.

  In the first embodiment, the spacer SP is disposed so as to face the green color filter layer 320G stacked on the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG. However, the present invention is not limited to this example, and the spacer SP is opposed to the green color filter layer 320G stacked on the light shielding layer 340 disposed between the second transmission region TG and the third transmission region TB. It may be arranged to do.

  Further, although the spacer SP is disposed so as to face the light shielding layer 340, the thickness of the light shielding layer 340 is smaller than the thickness of the color filter layer 320 (for example, about 1.0 μm to 1.2 μm). The influence on the cell gap due to variations in the thickness of the light shielding layer 340 is not a problem.

  Next, a liquid crystal display device according to a second embodiment will be described. Note that in the second embodiment, the same components as those in the liquid crystal display device according to the above-described first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the second embodiment, as illustrated in FIG. 5, the light shielding layer 340 includes a first light shielding part 340 </ b> A and a second light shielding part 340 </ b> B. The first light shielding portion 340 </ b> A extends linearly along the second direction V. The first light shielding portion 340 </ b> A has a substantially constant first width HA in the first direction H. A second light shielding part 340B is arranged in the middle of the first light shielding part 340A. The second light shielding part 340B is connected to the first light shielding part 340A. The second light shielding part 340B has a second width HB that is wider than the first width HA in the first direction H. The second light shielding part 340B has a projecting part 340C projecting in the first direction H from the first light shielding part 340A.

  As shown in FIG. 6, the light shielding layer 340 is disposed between the first transmission region TR and the second transmission region TG. With respect to the light shielding layer 340, the second light shielding portion 340B has a protruding portion 340C that protrudes toward the second transmission region TG in the first direction H relative to the first light shielding portion 340A. The green color filter layer 320G is disposed in the second transmission region TG and is stacked on the first light shielding part 340A and the second light shielding part 340B. In particular, the green color filter layer 320G is laminated on the entire protrusion 340C of the second light-shielding part 340B that protrudes toward the second transmission region TG. The red color filter layer 320R is disposed in the first transmission region TR, and a part of the red color filter layer 320R is stacked on the first light shielding part 340A and the second light shielding part 340B, but on the protrusion 340C. Are not stacked.

  In the example shown in FIG. 6, the boundary between the red color filter layer 320R and the green color filter layer 320G is formed linearly along the second direction V. The area where the green color filter layer 320G and the light shielding layer 340 overlap is larger than the area where the red color filter layer 320R and the light shielding layer 340 overlap. That is, the boundary between the red color filter layer 320R and the green color filter layer 320G is closer to the first transmission region TR side than to the second transmission region TG side.

  The spacer SP is disposed so as to face the green color filter layer 320G stacked on the second light shielding portion 340B. In the example illustrated in FIG. 6, the spacer SP is disposed so as to face the protruding portion 340 </ b> C protruding mainly toward the second transmission region TG in the second light shielding portion 340 </ b> B.

  As shown in FIG. 7, the spacers SP formed on the array substrate 200 are disposed so as to face the green color filter layer 320 </ b> G stacked on the second light shielding part 340 </ b> B of the light shielding layer 340. 6 and 7 show only the main part.

  Although not shown, with respect to the light shielding layer 340 disposed between the second transmission region TG and the third transmission region TB, the second light shielding portion 340B has a protruding portion 340C that protrudes toward the second transmission region TG. It may be. In this case, the blue color filter layer 320B is disposed in the region where the red color filter layer 320R illustrated in FIGS. 6 and 7 is disposed.

  Also in the liquid crystal display device having such a configuration, since the area where the green color filter layer 320G and the light shielding layer 340 overlap is large, the spacer SP can be disposed so as to face the green color filter layer 320G. The same effect as the form can be obtained.

  In the second embodiment, with respect to the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG, the second light shielding portion 340B includes a protruding portion 340C that protrudes toward the second transmission region TG. Although the example which had was demonstrated, it is not restricted to this example. In the example shown in FIG. 8, with respect to the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG, the second light shielding portion 340B includes a protrusion 340D that protrudes toward the first transmission region TR and A projecting portion 340E projecting to the second transmission region TG side is provided. The green color filter layer 320G is disposed in the second transmission region TG and is disposed on the first light shielding portion 340A and the second light shielding portion 340B. In particular, the green color filter layer 320G is laminated on the entire protrusion 340E of the second light shielding part 340B, and further protrudes toward the protrusion 340D on the second light shielding part 340B. The red color filter layer 320R is disposed in the first transmission region TR, and a part of the red color filter layer 320R is stacked on the first light shielding portion 340A and the protrusion 340E of the second light shielding portion 340B. It is not laminated on 340D. Further, the red color filter layer 320R has a shape cut out corresponding to the protruding portion of the green color filter layer 320G on the second light shielding portion 340B so as not to overlap with the green color filter layer 320G. Is arranged.

  In the example shown in FIG. 8, the boundary between the red color filter layer 320R and the green color filter layer 320G protrudes toward the first transmission region TR on the second light shielding portion 340B. Also in such an example, the area where the green color filter layer 320G and the light shielding layer 340 overlap is larger than the area where the red color filter layer 320R and the light shielding layer 340 overlap.

  The spacer SP is disposed so as to face the green color filter layer 320G stacked on the second light shielding portion 340B.

  Also in the liquid crystal display device having such a configuration, the same effect as in the first embodiment can be obtained.

  Although not shown, the shape as shown in FIG. 8 can be applied to the light shielding layer 340 disposed between the second transmission region TG and the third transmission region TB. In this case, the green color filter layer 320G is disposed in the second transmission region TG and is disposed on the first light shielding portion 340A and the second light shielding portion 340B. The spacer SP is disposed so as to face the green color filter layer 320G stacked on the second light shielding portion 340B. The blue color filter layer 320B has a shape in which a portion of the second light-shielding portion 340B of the green color filter layer 320G facing the third transmission region TB is cut out, and does not overlap with the green color filter layer 320G. Are arranged as follows.

  Next, a liquid crystal display device according to a modification of the second embodiment will be described. In addition, in a modification, about the structure similar to the liquid crystal display device which concerns on the above-mentioned 1st Embodiment and 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the modification, the first transmission region TR, the second transmission region TG, and the third transmission region TB have the same area. As shown in FIG. 9, for the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG, the second light shielding unit 340B includes a protruding portion PG that protrudes toward the second transmission region TG. Have. Regarding the light shielding layer 340 disposed between the second transmissive region TG and the third transmissive region, the second light shielding portion 340B has a projecting portion PB projecting to the third transmissive region TB side. With respect to the light shielding layer 340 disposed between the third transmission region TR and the first transmission region TR, the second light shielding unit 340B has a projecting portion PR that projects toward the first transmission region TR.

  The green color filter layer 320G is disposed in the second transmission region TR and is disposed on the first light shielding portion 340A and the second light shielding portion 340B. The area where the green color filter layer 320G overlaps with the light shielding layer 340 disposed between the first transmission region TR and the second transmission region TG is large. The red color filter layer 320R, the first transmission region TR, and the second transmission region have a large area. It is larger than the area where the light shielding layer 340 arranged between the regions TG overlaps. The spacer SP is disposed so as to face the green color filter layer 320G stacked on the second light shielding portion 340B. That is, the spacer SP is disposed so as to face the protruding portion RG, but does not face the protruding portion PR and the protruding portion PB. FIG. 7 shows only the main part.

  Also in the liquid crystal display device having such a configuration, since the area where the green color filter layer 320G and the light shielding layer 340 overlap is large, the same effect as in the first embodiment can be obtained.

  Furthermore, in the modified example, since the areas of the first transmissive region TR, the second transmissive region TG, and the third transmissive region TB are the same, the aperture ratio of the pixels PX is the same, and the occurrence of color unevenness is prevented. In addition, a liquid crystal display device with good display quality can be provided.

  In addition, this invention is not limited to the said embodiment itself, In the stage of implementation, it can change and implement a component within the range which does not deviate from the summary. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  In this embodiment, as an example of the liquid crystal mode, the array substrate 200 includes the pixel electrode 230, the counter substrate 300 includes the counter electrode 330 facing the pixel electrode 230, and a vertical electric field (an electric field substantially perpendicular to the main surface of the substrate). Although a mode for switching liquid crystal molecules using, for example, a TN (Twisted Nematic) mode has been described as an example, the present invention is not limited to this example. One substrate is provided with a pixel electrode 230 and a counter electrode 330 that is electrically insulated from the pixel electrode 230 and opposed to the pixel electrode 230, and uses liquid crystal molecules by utilizing a horizontal electric field (an electric field substantially parallel to the main surface of the substrate). The present invention is also applicable to a switching mode, for example, FFS (Field Ring Switching) mode.

  200 ... Array substrate TR ... First transmission region TG ... Second transmission region TB ... Third transmission region 340 ... Light shielding layer 320R ... Red color filter layer 320G ... Green color filter layer 320G 320B ... Blue color filter layer 300 ... Counter substrate SP ... Spacer 400 ... Liquid crystal layer

Claims (5)

An array substrate;
A light shielding layer disposed between the first transmission region and the second transmission region and between the second transmission region and the third transmission region, a red color filter layer disposed in the first transmission region, and a second A green color filter layer disposed in the transmissive region and laminated on the light shielding layer, and a blue color filter layer disposed in the third transmissive region, and disposed to face the array substrate A counter substrate;
A spacer formed on the array substrate and facing the green color filter layer laminated on the light shielding layer and forming a cell gap between the array substrate and the counter substrate;
A liquid crystal layer held in a cell gap formed by the spacer;
A liquid crystal display device comprising: An array substrate;
The first light-shielding portion and the first light-shielding portion are disposed between the first transmission region and the second transmission region and between the second transmission region and the third transmission region, respectively, and are formed to have a first width. A light-shielding layer having a second light-shielding portion formed in a second width wider than the first width; a red color filter layer disposed in the first transmission region; and the second light-shielding portion disposed in the second transmission region. A green color filter layer stacked on the substrate, a blue color filter layer disposed in the third transmission region, and a counter substrate disposed to face the array substrate;
A spacer that is formed on the array substrate and faces the green color filter layer stacked on the second light-shielding portion and forms a cell gap between the array substrate and the opposite substrate;
A liquid crystal layer held in a cell gap formed by the spacer;
A liquid crystal display device comprising:   The liquid crystal display device according to claim 1, wherein the first transmissive region, the second transmissive region, and the third transmissive region have the same area.   3. The liquid crystal display device according to claim 1, wherein a thickness of the green color filter layer is larger than a thickness of the red color filter layer and a thickness of the blue color filter layer.   The liquid crystal display device according to claim 1, further comprising a loop-shaped seal member that bonds the array substrate and the counter substrate.

Images