WO2012077527A1 - 半導体装置および半導体装置の製造方法、ならびに液晶表示装置 - Google Patents
半導体装置および半導体装置の製造方法、ならびに液晶表示装置 Download PDFInfo
- Publication number
- WO2012077527A1 WO2012077527A1 PCT/JP2011/077493 JP2011077493W WO2012077527A1 WO 2012077527 A1 WO2012077527 A1 WO 2012077527A1 JP 2011077493 W JP2011077493 W JP 2011077493W WO 2012077527 A1 WO2012077527 A1 WO 2012077527A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- layer
- light shielding
- semiconductor device
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6704—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device
- H10D30/6723—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device having light shields
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
- H10D30/6756—Amorphous oxide semiconductors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
- H10D86/423—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/451—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs characterised by the compositions or shapes of the interlayer dielectrics
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133345—Insulating layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/136222—Colour filters incorporated in the active matrix substrate
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/40—Arrangements for improving the aperture ratio
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
Definitions
- the present invention relates to a semiconductor device having a thin film transistor (TFT) including an oxide semiconductor layer, a method for manufacturing such a semiconductor device, and a liquid crystal display device.
- TFT thin film transistor
- a TFT having an oxide semiconductor layer containing In (indium), Zn (zinc), Ga (gallium), or the like has been actively developed (for example, Patent Document 1).
- a TFT having an oxide semiconductor layer (hereinafter referred to as an oxide semiconductor TFT) has a characteristic of high mobility.
- Patent Document 1 discloses a liquid crystal display device in which a light-shielding layer having a function of attenuating visible light intensity is formed so as to cover an oxide semiconductor layer, and the operating characteristics of the oxide semiconductor TFT are stabilized. Yes. Further, Patent Document 1 also discloses a liquid crystal display device in which the above-described light shielding layer is formed in part of an interlayer film.
- Patent Documents 2 and 3 disclose a liquid crystal display device in which a black matrix (BM) is formed on an array substrate and an aperture ratio is increased.
- BM black matrix
- the shape of the light shielding layer disturbs the orientation of the liquid crystal molecules in the liquid crystal layer and causes a display defect. There is.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a semiconductor device in which the characteristics of TFT due to light do not easily change and display quality does not deteriorate, a method for manufacturing such a semiconductor device, and a liquid crystal display device. It is to be.
- a semiconductor device includes a substrate, a thin film transistor having a source electrode, a drain electrode, and an oxide semiconductor layer supported by the substrate, a first insulating layer formed on the thin film transistor, and the first A second insulating layer having a first opening or a first recess formed on the insulating layer, and a first light-shielding layer formed to overlap the oxide semiconductor layer when viewed from the normal direction of the substrate.
- the first light shielding layer is formed in the first opening or the first recess, the upper surface of the first light shielding layer has a convex curved surface, and the upper surface of the second insulating layer Is on the substrate side with respect to the upper surface of the first light shielding layer.
- the distance between the upper surface of the second insulating layer and the topmost portion of the upper surface of the first light shielding layer is more than 0 nm and not more than 1500 nm.
- the first light shielding layer is made of a black resin.
- the semiconductor device includes a source wiring electrically connected to the source electrode, and a second light shielding layer formed so as to overlap the source wiring when viewed from the normal direction of the substrate.
- the second insulating layer further includes a second opening or a second recess, and the second light shielding layer is formed in the second opening or the second recess, and the second light shielding
- the upper surface of the layer has a convex curved surface, and the upper surface of the second insulating layer is closer to the substrate than the upper surface of the second light shielding layer.
- the distance between the upper surface of the second insulating layer and the topmost portion of the upper surface of the second light shielding layer is greater than 0 nm and not greater than 1500 nm.
- the second light shielding layer is made of a black resin.
- the semiconductor device includes a conductive layer formed on the second insulating layer, and the second insulating layer and the first light shielding layer are in contact with each other to form a first interface.
- the second insulating layer and the second light shielding layer are in contact with each other to form a second interface, and at least a part of the first interface or the second interface is below the conductive layer.
- the above-described semiconductor device has a drain wiring electrically connected to the drain electrode, and the source is formed on a layer formed of the same material as that of the oxide semiconductor layer.
- the wiring and the drain wiring are formed.
- the oxide semiconductor layer contains In, Ga, and Zn.
- the second insulating layer has oil repellency.
- a liquid crystal display device includes the above-described semiconductor device.
- the above-described liquid crystal display device is a liquid crystal display device having a vertical alignment type liquid crystal layer, and the pixel region of the liquid crystal display device has a liquid crystal molecule in the first direction when a voltage is applied.
- the first direction, the second direction, the third direction, and the fourth direction are four directions in which a difference between any two directions is substantially equal to an integral multiple of 90 °, and the first liquid crystal
- the domain, the second liquid crystal domain, the third liquid crystal domain, and the fourth liquid crystal domain are respectively adjacent to other liquid crystal domains and arranged in a matrix of 2 rows and 2 columns, and the first liquid crystal domain, the second liquid crystal domain, Liquid crystal domain, third liquid crystal
- the third light shielding layer is formed so that each of the main and fourth liquid crystal domains selectively shields at least a part of the boundary region adjacent to the other liquid crystal domains, and the second insulating layer is formed by the third insulating layer.
- the third light shielding layer is formed in the third opening or the third recess, an upper surface of the third light shielding layer has a convex curved surface, and The upper surface of the second insulating layer is closer to the substrate than the upper surface of the third light shielding layer.
- the distance between the upper surface of the second insulating layer and the topmost portion of the upper surface of the third light shielding layer is greater than 0 nm and not more than 1500 nm.
- the third light shielding layer is made of a black resin.
- the liquid crystal display device includes a conductive layer formed on the second insulating layer, and the third light shielding layer and the second insulating layer are in contact with each other to form a third interface. And at least a portion of the third interface is below the conductive layer.
- a method for manufacturing a semiconductor device is a method for manufacturing the semiconductor device described above, and includes a step of forming the second insulating layer from an organic material having oil repellency.
- the above-described method for manufacturing a semiconductor device includes a step (A) of forming the second insulating layer, and a plasma treatment using a fluorine-based gas after the step (A). And (B) providing oil repellency to the two insulating layers.
- the present invention it is possible to provide a semiconductor device in which TFT characteristics are hardly changed by light and display quality is not deteriorated, a method for manufacturing such a semiconductor device, and a liquid crystal display device.
- FIG. 14C is a schematic cross-sectional view of the semiconductor device 100A taken along the line A2-A2 ′ in FIG. It is a typical sectional view of a modification of semiconductor device 100A corresponding to Drawing 1 (b).
- 10 is a graph showing the relationship between the amount of change in threshold voltage ( ⁇ Vth) and drive time of each of semiconductor device 100A and semiconductor device 200.
- FIG. 4C is a plan view illustrating a conductive layer of the semiconductor device 100B. It is a top view explaining the relationship between the structure of the conductive layer of the semiconductor device 100B, and the orientation state of the liquid crystal molecule of the liquid crystal layer at the time of voltage application.
- (A) to (d) are schematic views for explaining a method of manufacturing the semiconductor device 100A.
- (A) to (d) are schematic views for explaining a method of manufacturing the semiconductor device 100A.
- (A)-(c) is a schematic diagram explaining the manufacturing method of the semiconductor device 100B.
- the semiconductor device in this embodiment is a semiconductor device (TFT substrate) used for a liquid crystal display device, for example.
- TFT substrate a semiconductor device used for a liquid crystal display device
- the present invention is not limited to the illustrated embodiment.
- FIG. 1A is a schematic plan view of a semiconductor device 100A according to an embodiment of the present invention.
- FIG. 1B is a schematic cross-sectional view of the semiconductor device 100A taken along line A1-A1 'of FIG.
- FIG. 1C is a schematic cross-sectional view of the semiconductor device 100A along the line A2-A2 'of FIG.
- FIG. 2 is a schematic cross-sectional view of a modified example of the semiconductor device 100A corresponding to FIG.
- the semiconductor device 100A includes a substrate (for example, a glass substrate) 1 and a TFT 10 supported on the substrate 1.
- the TFT 10 includes a source electrode 6, a drain electrode 7, and an oxide semiconductor layer 5.
- the TFT 10 is formed for each pixel, for example.
- the semiconductor device 100 ⁇ / b> A is viewed from the normal direction of the substrate 1 and the first insulating layer 9 formed on the TFT 10, the second insulating layer 11 having the opening 21 a formed on the first insulating layer 9, and the substrate 1.
- the light-shielding layer 12 a is formed so as to overlap with the oxide semiconductor layer 5.
- the light shielding layer 12a is formed in the opening 21a.
- the upper surface of the light shielding layer 12a has a curved surface, and the upper surface of the second insulating layer 11 is closer to the substrate 1 than the upper surface of the light shielding layer 12a. That is, the upper surface of the light shielding layer 12 a is convex upward with respect to the upper surface of the second insulating layer 11.
- the opening part 21a illustrated here is a through-hole, you may form a recessed part instead of the opening part 21a. However, the opening 21a is preferably a through hole. Although details will be described later, oxygen contained in the light shielding layer 12a is easily supplied to the oxide semiconductor layer 5.
- the semiconductor device 100A includes a source wiring 6 ′ extending in the column direction and a source wiring 6 when viewed from the normal direction of the first substrate. And a light shielding layer 12 b formed so as to overlap with “.
- the source line 6 ′ is electrically connected to the source electrode 6 of the TFT 10.
- the second insulating layer 11 further has an opening 21b.
- the light shielding layer 12b is formed in the opening 21b.
- the upper surface of the light shielding layer 12b has a curved surface, and the upper surface of the second insulating layer 11 is closer to the substrate 1 than the upper surface of the light shielding layer 12b.
- the light shielding layer 12b functions as, for example, a black matrix (BM).
- BM black matrix
- the BM When a BM is formed on the semiconductor device 100A, which is a TFT substrate, when a liquid crystal display device is manufactured using the semiconductor device 100A, the BM need not be formed on the color filter substrate facing the semiconductor device 100A. Since the positional deviation between BM and BM can be reduced and the BM does not have to be made too large, the aperture ratio of the pixel becomes larger.
- the opening part 21b illustrated here is a through-hole, you may form a recessed part instead of the opening part 21b.
- the liquid crystal on the TFT 10 is applied when a voltage is applied. It is possible to prevent the orientation of liquid crystal molecules in the layer (not shown) from being disturbed from the desired orientation.
- the liquid crystal display device having the semiconductor device 100A is a vertical alignment type liquid crystal display device, the above-described effect is remarkably exhibited.
- the upper surfaces of the light shielding layers 12a and 12b have curved surfaces and the upper surface of the second insulating layer 11 is closer to the substrate 1 than the upper surfaces of the light shielding layers 12a and 12b, defects due to the rubbing process occur. It becomes difficult to do.
- the light shielding layers 12a and 12b are preferably formed of a black resin.
- the black resin is formed from an acrylic resin containing, for example, a titanium black pigment or a carbon black pigment.
- the light shielding layers 12a and 12b absorb light applied to the oxide semiconductor layer 5 of the TFT 10, and thus the characteristics of the TFT 10 are prevented from being changed by light. be able to. Further, as will be described later, the light shielding layers 12a and 12b are easily formed by an ink jet method, leading to a reduction in manufacturing cost.
- the light shielding layers 12a and 12b are formed by the ink jet method, the light shielding layers 12a and 12b are formed only in desired regions, so that defects caused by the formation of the light shielding layers 12a and 12b are less likely to occur. Further, the black resin can supply oxygen to the oxide semiconductor layer 5 and suppress oxygen vacancies in the oxide semiconductor layer 5.
- the second insulating layer 11 preferably has oil repellency (a property of repelling oil and not repelling water) or a liquid repellency (a property of repelling water and oil) with respect to the material forming the light shielding layers 12a and 12b.
- oil repellency a property of repelling oil and not repelling water
- liquid repellency a property of repelling water and oil
- the upper surfaces of the light shielding layers 12a and 12b are formed to have curved surfaces, and the upper surface of the second insulating layer 11 is the upper surface of the light shielding layers 12a and 12b. It is formed so as to be on the substrate 1 side.
- the semiconductor device 100 ⁇ / b> A further includes a conductive layer 13 on the second insulating layer 11.
- the conductive layer 13 is, for example, a pixel electrode layer.
- the light shielding layer 12a and the second insulating layer 11 are in contact with each other to form an interface.
- the light shielding layer 12b and the second insulating layer 11 are in contact with each other to form an interface. It is preferable that at least a part of the interface between the light shielding layers 12 a and 12 b and the second insulating layer 11 is under the conductive layer 13.
- the interface between the light shielding layers 12 a and 12 b and the second insulating layer 11 is below the conductive layer 13, for example, moisture contained in the liquid crystal layer enters from the gap between the light shielding layers 12 a and 12 b and the second insulating layer 11. And it can prevent that the characteristic of TFT10 changes.
- the distance L between the topmost portions of the upper surfaces of the light shielding layers 12a and 12b and the upper surface of the second insulating layer 11 is preferably independently greater than 0 nm and not greater than 1500 nm.
- the distance L is within this range, particularly when the semiconductor device 100A is used in a liquid crystal display device having a vertical alignment type liquid crystal layer, the light shielding layers 12a and 12b define the tilt direction of the liquid crystal molecules when a voltage is applied. Therefore, the liquid crystal molecules in the liquid crystal layer on the TFT 10 are likely to have a desired orientation.
- the semiconductor device shown in FIG. 1A and FIG. 2 includes a source wiring 6 ′ electrically connected to the source electrode 6 of the TFT 10 and a drain wiring 7 ′ electrically connected to the drain electrode 7 of the TFT 10. Have.
- the source wiring 6 ′ and the drain wiring 7 ′ are formed on a layer formed from the same material as that for forming the oxide semiconductor layer 5.
- the semiconductor device shown in FIG. 2 can be manufactured by a method for manufacturing a semiconductor device in which the number of photomasks is reduced.
- a method for manufacturing a semiconductor device in which the number of photomasks is reduced is disclosed, for example, in Patent Document 4.
- Patent Document 4 the entire disclosure of Patent Document 4 is incorporated herein by reference.
- the oxide semiconductor layer 5 is an amorphous oxide semiconductor layer (a-IGZO layer) having, for example, In (indium), Ga (gallium), and Zn (zinc).
- the oxide semiconductor layer 5 is, for example, an amorphous oxide semiconductor (a-IZO) layer that contains In and Zn and does not contain Ga, or an amorphous oxide semiconductor that contains Zn and does not contain In and Ga. It may be an (a-ZnO) layer.
- the semiconductor layer of the TFT 10 may be, for example, an amorphous silicon (a-Si) layer instead of the oxide semiconductor layer 5.
- the semiconductor device 100A includes a TFT 10 and an auxiliary capacitance electrode 8 supported on the substrate 1, and a conductive layer electrically connected to the drain wiring 7 ′ of the TFT 10.
- Layer (in this embodiment, a pixel electrode layer) 13 The TFT 10 is an oxide semiconductor TFT.
- the TFT 10 includes a gate electrode 2, a first gate insulating film 3 formed on the gate electrode 2, a second gate insulating film 4 formed on the first gate insulating film 3, and the second gate insulating film 4. And the source electrode 6 and the drain electrode 7 formed on the oxide semiconductor layer 5.
- the semiconductor device 100 ⁇ / b> A includes a first insulating layer 9 formed on the TFT 10 and a second insulating layer 11 formed on the first insulating layer 9.
- the conductive layer 13 is formed on the second insulating layer 11, and a part of the conductive layer 13 is in contact with the light shielding layers 12a and 12b. However, the conductive layer 13 is formed so that a part of the conductive layer 13 and the channel region of the oxide semiconductor layer 5 do not overlap.
- the semiconductor device 100 ⁇ / b> A includes a source wiring 6 ′ electrically connected to the source electrode 6 and a drain wiring 7 ′ electrically connected to the drain electrode 7.
- the gate electrode 2 and the auxiliary capacitance electrode 8 have a laminated structure containing, for example, Ti (titanium) / Al (aluminum) / Ti.
- the gate electrode 2 and the auxiliary capacitance electrode 8 may be Cu (copper) instead of Al.
- the thicknesses of the gate electrode 2 and the auxiliary capacitance electrode 8 are each 250 nm, for example.
- the source electrode 6 and the source wiring 6 ′, and the drain electrode 7 and the drain wiring 7 ′ have a laminated structure containing, for example, MoN (molybdenum nitride) / Al (aluminum) / MoN.
- the source electrode 6 and the source wiring 6 ′, and the drain electrode 7 and the drain wiring 7 ′ may be Cu instead of Al.
- the thicknesses of the source electrode 6 and the source wiring 6 ', and the drain electrode 7 and the drain wiring 7' are, for example, 250 nm.
- the first gate insulating film 3 is made of, for example, SiN (silicon nitride).
- the thickness of the first gate insulating film 3 is, for example, 325 nm.
- the second gate insulating film 4 is made of, for example, SiO 2 (silicon dioxide).
- the thickness of the second gate insulating film 4 is, for example, 50 nm.
- the oxide semiconductor layer 5 contains, for example, In, Ga, and Zn.
- the thickness of the oxide semiconductor layer 5 is, for example, 50 nm.
- the first insulating layer 9 is made of, for example, SiO 2 .
- the thickness of the first insulating layer 9 is, for example, 250 nm.
- the second insulating layer 11 is made of, for example, a photosensitive organic material.
- the thickness of the second insulating layer 11 is, for example, 2000 nm to 4000 nm.
- the conductive layer 13 is made of, for example, ITO (Indium Tin Oxide).
- the thickness of the conductive layer 13 is, for example, 50 nm to 200 nm.
- FIG. 3 shows the threshold voltage variation ( ⁇ Vth) and driving time (unit: hours) of the semiconductor device 100A (example) and the semiconductor device 200 (comparative example) that does not have the light shielding layer 12a of the semiconductor device 100A. It is a graph showing the relationship.
- the semiconductor device 200 includes a substrate (for example, a glass substrate) 1 and a TFT 10 supported on the substrate 1.
- the TFT 10 includes a gate electrode 2, a first gate insulating film 3 formed on the gate electrode 2, a second gate insulating film 4 formed on the first gate insulating film 3, and the second gate insulating film 4.
- the source electrode 6 and the drain electrode 7 formed on the oxide semiconductor layer 5.
- the semiconductor device 200 includes a first insulating layer 9 formed on the TFT 10 and a second insulating layer 11 formed on the first insulating layer 9.
- the semiconductor device 200 does not have the light shielding layer 12a and the opening 21a.
- Each semiconductor device is driven on an LED (Light Emitting Diode) backlight.
- the brightness of the LED backlight is 2000 cd / m 2 .
- ⁇ Vth is the threshold voltage (Vth 0 ) of each of the semiconductor devices 100A and 200 when the LED backlight is not irradiated, and the environment in which the semiconductor devices 100A and 200 are irradiated with the light from the LED backlight.
- the difference ( ⁇ Vth Vth 0 ⁇ Vth t ) from the respective threshold voltages (Vth t ) of the semiconductor devices 100A and 200 during a predetermined driving time.
- ⁇ Vth greatly changes with the driving time.
- the change in ⁇ Vth is smaller in the semiconductor device 100A than in the semiconductor device 200. This is considered that light from the LED backlight is irradiated on the oxide semiconductor layer of the semiconductor device 200 and the threshold voltage is changed.
- the semiconductor device 100A since the light shielding layer 12a absorbs light that can be irradiated to the oxide semiconductor layer 5, it is considered that the threshold voltage does not change significantly.
- the CV characteristic capacitortance bias voltage characteristic
- the change in the CV characteristic of the TFT becomes small, and the CV characteristic. Is stable.
- the formation of the light shielding layer 12a stabilizes the electrical characteristics of the TFT, and as a result, for example, the display quality of the liquid crystal display device is stabilized.
- FIGS. 1-10 a semiconductor device 100B according to another embodiment of the present invention will be described with reference to FIGS. Note that components common to the semiconductor device 100A are denoted by the same reference numerals, and redundant description is avoided.
- FIG. 4A is a schematic plan view of the semiconductor device 100B.
- FIG. 4B is a schematic cross-sectional view of the semiconductor device 100B along the line B-B ′ of FIG.
- FIG. 4C is a schematic plan view of the conductive layer 13.
- the semiconductor device 100B includes a conductive layer (for example, pixel electrode layer) 13 of the semiconductor device 100A, for example, a structure of a pixel electrode disclosed in Patent Document 5. Further, for example, a semiconductor device having a cross-shaped light shielding layer 12c in the approximate center of the pixel.
- a conductive layer for example, pixel electrode layer 13 of the semiconductor device 100A
- a structure of a pixel electrode disclosed in Patent Document 5 for example, a semiconductor device having a cross-shaped light shielding layer 12c in the approximate center of the pixel.
- the conductive layer (for example, the pixel electrode layer) 13 is located on the first fringe portion 13a side, the first fringe portion 13a and the second fringe portion 13b extending in the first direction, A plurality of first branch portions 13aa extending in a second direction different from the first direction, a plurality of second branch portions 13bb positioned on the second fringe portion 13b side and extending in the second direction, and the first fringe portion 13a side A plurality of third branch portions 13ab extending in a third direction different from the first direction and the second direction, and a plurality of fourth branch portions 13ba positioned on the second fringe portion 13b side and extending in the fourth direction. And have.
- the widths of the first branch portion 13aa, the second branch portion 13bb, the third branch portion 13ab, and the fourth branch portion 13ba are, for example, not less than 1.4 ⁇ m and not more than 8.0 ⁇ m.
- the width between the first branch portion 13aa and the third branch portion 13ab and the width w1 between the second branch portion 13bb and the fourth branch portion 13ba are, for example, not less than 1.4 ⁇ m and not more than 3.2 ⁇ m, respectively. is there.
- the width w2 between the first branch portions 13aa, between the second branch portions 13bb, between the third branch portions 13ab and between the fourth branch portions 13ba is, for example, not less than 1.4 ⁇ m and not more than 3.2 ⁇ m.
- the width between the first branch portion 13aa and the fourth branch portion 13ba and the width w3 between the second branch portion 13bb and the third branch portion 13ab are, for example, not less than 1.4 ⁇ m and not more than 3.2 ⁇ m, respectively.
- the conductive layer 13 of the semiconductor device 100B may have the same structure as the pixel electrode disclosed in Patent Document 5 or Patent Document 6.
- the entire disclosure of Patent Documents 5 and 6 is incorporated herein by reference.
- the semiconductor devices 100A and 100B are used independently for a liquid crystal display device.
- the semiconductor device 100B is used in a liquid crystal display device (for example, MVA (Multi-domain Vertical Alignment) type liquid crystal display device) having a vertical alignment (VA (Vertical Alignment) type) liquid crystal layer.
- MVA Multi-domain Vertical Alignment
- VA Vertical Alignment
- FIG. 5 is a plan view for explaining the relationship between the structure of the pixel electrode layer of the liquid crystal display device 500B having the semiconductor device 100B and the orientation of the liquid crystal molecules 70 when a voltage is applied.
- the pixel region of the VA liquid crystal display device 500B includes a first liquid crystal domain 71 in which liquid crystal molecules in the liquid crystal layer are aligned along a first direction and a second liquid crystal domain 72 in which the liquid crystal molecules are aligned along a second direction when a voltage is applied.
- the third liquid crystal domain 73 is aligned along the third direction
- the fourth liquid crystal domain 74 is aligned along the fourth direction.
- the first direction, the second direction, the third direction, and the fourth direction are four directions in which the difference between any two directions is substantially equal to an integral multiple of 90 °.
- the first liquid crystal domain 71, the second liquid crystal domain 72, the third liquid crystal domain 73, and the fourth liquid crystal domain 74 are adjacent to the other liquid crystal domains and are arranged in a matrix of 2 rows and 2 columns.
- the conductive layer 13 shown in FIG. 4C has a structure in which the liquid crystal molecules 70 have such an orientation when a voltage is applied.
- the light shielding layer so that each of the first liquid crystal domain 71, the second liquid crystal domain 72, the third liquid crystal domain 73, and the fourth liquid crystal domain 74 selectively shields at least a part of the boundary region adjacent to the other liquid crystal domains. 12c is formed.
- the light shielding layer 12 c is formed in the opening 21 c formed in the second insulating layer 11.
- the upper surface of the light shielding layer 12c has a curved surface, and the upper surface of the second insulating layer 11 is closer to the substrate 1 than the upper surface of the light shielding layer 12c.
- the opening 21c is a through hole, but a recess may be formed instead of the opening 21c.
- the liquid crystal molecules in the liquid crystal layer are shielded from light by the light shielding layer 12c in areas where the liquid crystal molecules are not in the desired orientation (bright line areas), thereby improving the display quality of the liquid crystal display device.
- the display quality of the liquid crystal display device when viewed from an oblique direction is improved.
- the light shielding layer 12c absorbs internally reflected light generated in the liquid crystal panel, the display quality of the liquid crystal display device is improved.
- the width of the light shielding layer 12c is preferably 2 ⁇ m or more and 5 ⁇ m or less. When the width of the light shielding layer 12c is in such a range, the bright line region can be sufficiently shielded, and the aperture ratio of the pixel is not lowered so much.
- the light shielding layer 12c is made of a black resin.
- the black resin is formed from an acrylic resin containing, for example, a titanium black pigment or a carbon black pigment.
- the light shielding layer 12c and the second insulating layer 11 are in contact with each other to form an interface. At least one of the interfaces between the light shielding layer 12 c and the second insulating layer 11 is below the conductive layer 13.
- the conductive layer 13 is formed in this manner, for example, moisture contained in the liquid crystal layer can be prevented from entering from the gap between the light shielding layer 12c and the second insulating layer 11 and the characteristics of the TFT 10 being changed.
- the distance L ′ (not shown) between the top of the upper surface of the light shielding layer 12c and the upper surface of the second insulating layer 11 is preferably more than 0 nm and 1500 nm or less.
- the light shielding layer 12 c defines the tilt direction of the liquid crystal molecules when a voltage is applied, so that the liquid crystal molecules on the light shielding layer 12 c are likely to have a desired orientation.
- FIGS. 6 (a) to 6 (d) and FIGS. 7 (a) to 7 (d) are schematic views for explaining a method for manufacturing the semiconductor device 100A.
- FIG. 8A to FIG. 8C are schematic views for explaining a method for manufacturing the semiconductor device 100B. Note that since the semiconductor device 100B is a semiconductor device in which the light shielding layer 12c is formed on the semiconductor device 100A, the description will be made together with the semiconductor device 100A, and a duplicate description will be avoided.
- a TFT 10 having, for example, an oxide semiconductor layer 5 is formed on a substrate (for example, a glass substrate) 1 by a known method. Further, as shown in FIG. 7A, a source wiring 6 ′ is formed on the substrate 1.
- the formed second insulating layer 11 is formed.
- the second insulating layer 11 preferably has a low dielectric constant (for example, a dielectric constant of 2.0 or more and 4.0 or less). Further, the second insulating layer 11 may have liquid repellency.
- the second insulating layer 11 is obtained, for example, by patterning a film formed using a resist containing a photosensitive novolac resin to form the opening 21a and the opening 21b. As shown in FIG. 8A, an opening 21c is also formed in the semiconductor device 100B.
- a contact hole 22 that electrically connects the drain electrode 7 and the conductive layer 13 to be formed later is also formed (FIG. 6B).
- the first insulating layer 9 and the second insulating layer 11 are each formed by a known method. Instead of the openings 21a to 21c, recesses may be formed.
- the light shielding droplets 12a ′ and 12b ′ are respectively applied to the opening 21a and the opening 21b by using, for example, an ink jet method using a solution containing a black resin. Form.
- the light-shielding drops 12a ′ and 12b ′ are formed by the inkjet method, the light-shielding drops 12a ′ and 12b ′ are easily formed only in a desired region.
- the light shielding droplet 12c ′ is also formed in the opening 21c.
- the solution containing the black resin for example, a solution in which an acrylic resin containing a titanium black pigment is dispersed in PGMEA (propylene glycol monomethyl ether acetate) is used.
- the light-shielding droplets 12a ′ are placed in the respective openings 21a to 21c so that the volume of the solid component contained in each of the light-shielding droplets 12a ′ to 12c ′ becomes the volume of the light-shielding layers 12a to 12c to be formed.
- the shape of the solution is a square, the volume of the solution containing black resin dropped on a side of 10 ⁇ m, a bottom area of 100 ⁇ m 2 , and a height of 2 ⁇ m is about 1600 fL (femtoliter).
- the volume of the solution containing the black resin dropped into 21c (for example, when the width of the bottom of the opening 21c is 5 ⁇ m, the length is 100 ⁇ m, the bottom area is 500 ⁇ m 2 , and the height is 2 ⁇ m) is about 8 pL (picoliter) ).
- the solvent contained in the light-shielding droplets 12a ′ and 12b ′ is evaporated, for example, by drying under reduced pressure, and then baked under conditions of, for example, 220 ° C. for 1 hour. Then, the light shielding drops 12a 'and 12b' are cured to form the light shielding layer 12a and the light shielding layer 12b. As shown in FIG. 8C, in the semiconductor device 100B, similarly, the light shielding droplet 12c 'is cured under the above-described conditions to form the light shielding layer 12c.
- the second insulating layer 11 is formed of an organic material having oil repellency (or liquid repellency) (for example, a fluororesin having photosensitivity (for example, trade name: Optoace (manufactured by Daikin Industries, Ltd.))), light shielding
- organic material having oil repellency for example, a fluororesin having photosensitivity (for example, trade name: Optoace (manufactured by Daikin Industries, Ltd.)
- light shielding The upper surfaces of the layers 12a to 12c have a curved surface, and the upper surface of the second insulating layer 11 is located closer to the substrate 1 than the upper surfaces of the light shielding layers 12a to 12c.
- the contact hole is penetrated to the drain wiring 7 'by a known method, and then the conductive layer 13 is formed to manufacture the semiconductor device 100A.
- the semiconductor device 100B is manufactured (see FIG. 4).
- the conductive layer 13 is preferably formed so that a part of the conductive layer 13 is on the interface between the light shielding layer 12 a and / or the light shielding layer 12 b and the second insulating layer 11.
- the conductive layer 13 When the conductive layer 13 is formed so that a part of the conductive layer 13 is on the interface between the light shielding layer 12a and / or the light shielding layer 12b and the second insulating layer 11, the light shielding layer 12a or / In addition, the interface between the light shielding layer 12 b and the second insulating layer 11 can be covered with a part of the conductive layer 13. Similarly, it is preferable to form the conductive layer 13 so that a part of the conductive layer 13 is on the interface between the light shielding layer 12 c and the second insulating layer 11.
- the conductive layer 13 When the conductive layer 13 is formed such that a part of the conductive layer 13 is on the interface between the light shielding layer 12c and the second insulating layer 11, the light shielding layer 12c and the second insulating layer 11 can be formed without increasing the number of manufacturing steps.
- the interface can be covered with a part of the conductive layer 13.
- the organic material having oil repellency for forming the second insulating layer 11 is expensive. Therefore, instead of using this organic material, the semiconductor device 100A can be manufactured at low cost by the method described below.
- a manufacturing method in another embodiment of the semiconductor device 100A will be described again with reference to FIG. Although description is omitted, the semiconductor device 100B can also be manufactured by the manufacturing method described below.
- the layers up to the second insulating layer 11 are formed by the method described above.
- the material forming the second insulating layer 11 may not have oil repellency (or liquid repellency).
- the second insulating layer 11 is formed from, for example, a photosensitive resist containing a novolac resin.
- the second insulating layer 11 is patterned by a known method to form the above-described opening 21a and opening 21b.
- a contact hole 22 that electrically connects the drain electrode 7 and the conductive layer 13 to be formed later is also formed.
- a vacuum pressure dry etching apparatus is used, and introduced gases are CF 4 (carbon tetrafluoride): 150 sccm to 300 sccm and He (helium): 0 sccm to 500 sccm.
- the gas pressure is 50 mTorr or more and 150 mTorr or less (about 6.7 Pa or more and about 20 Pa or less)
- the power consumption is 200 W or more and 300 W or less
- the treatment time is 20 seconds or more and 90 seconds or less
- the treatment temperature is 40 ° C. It went on condition of.
- the portion of the second insulating layer 11 subjected to such a treatment has oil repellency (or liquid repellency).
- a direct type atmospheric pressure plasma apparatus is used, and the introduced gas is CF 4 : 5.0 slm to 15 slm, and N 2 (nitrogen): 20 slm to 50 slm.
- the gas pressure is set to 300 mTorr to 800 mTorr (about 40 Pa to about 107 Pa), the transfer speed is set to 0.5 m / min to 3.0 m / min, and the processing temperature is set to 25 ° C. to 35 m. It carried out on the conditions below °C.
- SF 6 sulfur hexafluoride
- CHF 3 fluoroform
- C 2 F 6 ethane hexafluoride
- an inert gas such as He or N 2 may be mixed with the fluorine-based gas.
- oil repellency (or liquid repellency) is imparted to the treated second insulating layer 11.
- the light shielding layer 12a and the opening 21a and the opening 21b are formed by the method described above.
- the light shielding layer 12b is formed.
- the upper surface of the light shielding layer 12a and the light shielding layer 12b has a curved surface, and the upper surface of the second insulating layer 11 is closer to the substrate 1 than the upper surfaces of the light shielding layer 12a and the light shielding layer 12b.
- the contact hole is penetrated to the drain wiring 7 'by a known method, and then the conductive layer 13 is formed to manufacture the semiconductor device 100A.
- a semiconductor device in which a change in TFT characteristics due to light does not easily occur and display quality does not deteriorate, a method for manufacturing such a semiconductor device, and a liquid crystal display device.
- the applicable range of the present invention is extremely wide, and it can be applied to a semiconductor device provided with a TFT or an electronic device in any field having such a semiconductor device.
- a semiconductor device provided with a TFT or an electronic device in any field having such a semiconductor device.
- it can be used for an active matrix liquid crystal display device or an organic EL display device.
- Such a display device can be used for a display screen of a mobile phone or a portable game machine, a monitor of a digital camera, or the like. Therefore, the present invention can be applied to all electronic devices in which a liquid crystal display device or an organic EL display device is incorporated.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Thin Film Transistor (AREA)
Abstract
Description
2 ゲート電極
3、4 ゲート絶縁膜
5 酸化物半導体層
6 ソース電極
6’ ソース配線
7 ドレイン電極
7’ ドレイン配線
8 補助容量電極
9 第1絶縁層
10 TFT
11 第2絶縁層
12a、12b 遮光層
13 導電層
21a、21b 開口部
100A 半導体装置
Claims (17)
- 基板と、
前記基板に支持されたソース電極、ドレイン電極および酸化物半導体層を有する薄膜トランジスタと、
前記薄膜トランジスタ上に形成された第1絶縁層と、
前記第1絶縁層上に形成された第1開口部または第1凹部を有する第2絶縁層と、
前記基板の法線方向から見たとき、前記酸化物半導体層と重なるように形成された第1遮光層とを有し、
前記第1遮光層は、前記第1開口部または第1凹部に形成され、
前記第1遮光層の上面は凸状の曲面を有し、かつ、前記第2絶縁層の上面は前記第1遮光層の上面よりも前記基板側にある、半導体装置。 - 前記第2絶縁層の上面と前記第1遮光層の上面の最頂部との距離は、0nm超1500nm以下である、請求項1に記載の半導体装置。
- 前記第1遮光層は、黒色樹脂から形成されている、請求項1または2に記載の半導体装置。
- 前記ソース電極に電気的に接続されたソース配線と、
前記基板の法線方向から見たとき、前記ソース配線と重なるように形成された第2遮光層をさらに有し、
前記第2絶縁層は、第2開口部または第2凹部をさらに有し、
前記第2遮光層は、前記第2開口部または前記第2凹部に形成され、
前記第2遮光層の上面は凸状の曲面を有し、かつ、前記第2絶縁層の上面は前記第2遮光層の上面よりも前記基板側にある、請求項1から3のいずれかに記載の半導体装置。 - 前記第2絶縁層の上面と前記第2遮光層の上面の最頂部との距離は、0nm超1500nm以下である、請求項4に記載の半導体装置。
- 前記第2遮光層は、黒色樹脂から形成されている、請求項4または5に記載の半導体装置。
- 前記第2絶縁層上に形成された導電層を有し、
前記第2絶縁層と前記第1遮光層とは互いに接して第1界面を形成しており、
前記第2絶縁層と前記第2遮光層とは互いに接して第2界面を形成しており、
前記第1界面または前記第2界面の少なくとも1部は、前記導電層の下にある、請求項1から6のいずれかに記載の半導体装置。 - 前記ドレイン電極に電気的に接続されたドレイン配線を有し、
前記酸化物半導体層を形成する材料と同一の材料から形成された層上に、前記ソース配線および前記ドレイン配線は形成されている、請求項4から7のいずれかに記載の半導体装置。 - 前記酸化物半導体層は、In、GaおよびZnを含む、請求項1から8のいずれかに記載の半導体装置。
- 前記第2絶縁層は、撥油性を有する、請求項1から9のいずれかに記載の半導体装置。
- 請求項1から10のいずれかに記載の半導体装置を有する、液晶表示装置。
- 垂直配向型の液晶層を有する液晶表示装置であって、
前記液晶表示装置の画素領域は、電圧印加時に前記液晶層の液晶分子が、第1方向に沿って配向する第1液晶ドメインと、第2方向に沿って配向する第2液晶ドメインと、第3方向に沿って配向する第3液晶ドメインと、第4方向に沿って配向する第4液晶ドメインとを有し、
前記第1方向、第2方向、第3方向および第4方向は、任意の2つの方向の差が90°の整数倍に略等しい4つの方向であり、
前記第1液晶ドメイン、第2液晶ドメイン、第3液晶ドメインおよび第4液晶ドメインは、それぞれ他の液晶ドメインと隣接し、かつ、2行2列のマトリクス状に配置されており、
前記第1液晶ドメイン、第2液晶ドメイン、第3液晶ドメインおよび第4液晶ドメインのそれぞれが他の液晶ドメインと隣接する境界領域の少なくとも一部を選択的に遮光するように第3遮光層は、形成されており、
前記第2絶縁層は、第3開口部または第3凹部をさらに有し、
前記第3遮光層は、前記第3開口部または前記第3凹部に形成され、
前記第3遮光層の上面は凸状の曲面を有し、かつ、前記第2絶縁層の上面は前記第3遮光層の上面よりも前記基板側にある、請求項11に記載の液晶表示装置。 - 前記第2絶縁層の上面と前記第3遮光層の上面の最頂部との距離は、0nm超1500nm以下である、請求項12に記載の液晶表示装置。
- 前記第3遮光層は、黒色樹脂から形成されている、請求項13に記載の液晶表示装置。
- 前記第2絶縁層上に形成された導電層を有し、
前記第3遮光層と前記第2絶縁層とは互いに接して第3界面を形成しており、
前記第3界面の少なくとも1部は、前記導電層の下にある、請求項12から14のいずれかに記載の液晶表示装置。 - 請求項10に記載の半導体装置の製造方法であって、
前記第2絶縁層を、撥油性を有する有機材料から形成する工程を包含する、半導体装置の製造方法。 - 請求項10に記載の半導体装置の製造方法であって、
前記第2絶縁層を形成する工程(A)と、
前記工程(A)の後に、フッ素系のガスを用いてプラズマ処理を行い、前記第2絶縁層に撥油性を付与する工程(B)とを包含する、半導体装置の製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180059588.2A CN103261959B (zh) | 2010-12-10 | 2011-11-29 | 半导体装置和半导体装置的制造方法以及液晶显示装置 |
| US13/992,440 US9030619B2 (en) | 2010-12-10 | 2011-11-29 | Semiconductor device, method for manufacturing semiconductor device, and liquid crystal display device |
| JP2012547790A JP5336005B2 (ja) | 2010-12-10 | 2011-11-29 | 半導体装置および半導体装置の製造方法、ならびに液晶表示装置 |
| KR1020137015344A KR20130126639A (ko) | 2010-12-10 | 2011-11-29 | 반도체 장치 및 반도체 장치의 제조 방법 및 액정 표시 장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010275885 | 2010-12-10 | ||
| JP2010-275885 | 2010-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012077527A1 true WO2012077527A1 (ja) | 2012-06-14 |
Family
ID=46207018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/077493 Ceased WO2012077527A1 (ja) | 2010-12-10 | 2011-11-29 | 半導体装置および半導体装置の製造方法、ならびに液晶表示装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9030619B2 (ja) |
| JP (1) | JP5336005B2 (ja) |
| KR (1) | KR20130126639A (ja) |
| CN (1) | CN103261959B (ja) |
| WO (1) | WO2012077527A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014034786A1 (ja) * | 2012-08-30 | 2014-03-06 | シャープ株式会社 | アクティブマトリクス基板および液晶表示装置 |
| WO2015002204A1 (ja) * | 2013-07-05 | 2015-01-08 | 旭硝子株式会社 | 有機トランジスタ素子の製造方法 |
| EP3614384A1 (en) | 2014-07-28 | 2020-02-26 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Method for estimating noise in an audio signal, noise estimator, audio encoder, audio decoder, and system for transmitting audio signals |
| JP2022066258A (ja) * | 2013-12-02 | 2022-04-28 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762223A (zh) * | 2013-12-31 | 2014-04-30 | 深圳市华星光电技术有限公司 | 一种具有氧化物薄膜电晶体的发光装置及其制造方法 |
| JP6698289B2 (ja) | 2014-07-31 | 2020-05-27 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 液晶表示装置 |
| US10386670B2 (en) * | 2014-12-26 | 2019-08-20 | Sharp Kabushiki Kaisha | Display device |
| CN105116657A (zh) * | 2015-09-23 | 2015-12-02 | 深圳市华星光电技术有限公司 | 一种阵列基板以及液晶显示面板 |
| CN106125430A (zh) * | 2016-08-26 | 2016-11-16 | 深圳市华星光电技术有限公司 | 阵列基板、显示面板及阵列基板的制备方法 |
| CN106972032B (zh) * | 2017-05-22 | 2020-08-25 | 上海天马有机发光显示技术有限公司 | 阵列基板及包含其的显示面板 |
| CN107507867A (zh) * | 2017-08-24 | 2017-12-22 | 京东方科技集团股份有限公司 | 顶栅自对准薄膜晶体管层叠结构及其制作方法 |
| CN107968110B (zh) | 2017-11-21 | 2020-05-01 | 京东方科技集团股份有限公司 | 显示基板及其制作方法、显示装置及其制作方法 |
| CN113703231B (zh) * | 2021-08-30 | 2022-12-23 | Tcl华星光电技术有限公司 | 阵列基板及液晶显示面板 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342123U (ja) * | 1989-09-01 | 1991-04-22 | ||
| JPH03227062A (ja) * | 1990-01-31 | 1991-10-08 | Matsushita Electron Corp | 薄膜トランジスタアレイ |
| JPH0815670A (ja) * | 1994-06-28 | 1996-01-19 | Nec Corp | アクティブマトリクス型液晶表示装置 |
| JP2003149647A (ja) * | 2001-08-31 | 2003-05-21 | Fujitsu Display Technologies Corp | 液晶表示装置及びその製造方法 |
| JP2003273361A (ja) * | 2002-03-15 | 2003-09-26 | Sharp Corp | 半導体装置およびその製造方法 |
| JP2010156960A (ja) * | 2008-12-03 | 2010-07-15 | Semiconductor Energy Lab Co Ltd | 液晶表示装置 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0728088A (ja) * | 1993-06-24 | 1995-01-31 | Toshiba Corp | 液晶表示装置およびその製造方法 |
| CN1148600C (zh) | 1996-11-26 | 2004-05-05 | 三星电子株式会社 | 薄膜晶体管基片及其制造方法 |
| WO1999048339A1 (en) * | 1998-03-17 | 1999-09-23 | Seiko Epson Corporation | Substrate for patterning thin film and surface treatment thereof |
| JP3391304B2 (ja) | 1999-07-19 | 2003-03-31 | 松下電器産業株式会社 | 液晶画像表示装置と画像表示装置用半導体装置の製造方法 |
| KR100391157B1 (ko) | 2001-10-25 | 2003-07-16 | 엘지.필립스 엘시디 주식회사 | 액정 표시 장치용 어레이 기판 및 그의 제조 방법 |
| KR100978950B1 (ko) * | 2003-12-01 | 2010-08-31 | 엘지디스플레이 주식회사 | 액정표시장치 |
| JP5144055B2 (ja) * | 2005-11-15 | 2013-02-13 | 三星電子株式会社 | 表示基板及びこれを有する表示装置 |
| KR20090024383A (ko) * | 2007-09-04 | 2009-03-09 | 삼성전자주식회사 | 박막 트랜지스터 표시판, 이의 제조 방법 및 이를 포함하는표시 장치 |
| JP2009151204A (ja) | 2007-12-21 | 2009-07-09 | Sharp Corp | 液晶表示装置 |
| KR101490478B1 (ko) * | 2008-07-10 | 2015-02-11 | 삼성디스플레이 주식회사 | 박막 트랜지스터 표시판 및 이를 포함하는 액정 표시 장치 |
| KR101492538B1 (ko) * | 2008-09-12 | 2015-02-12 | 삼성디스플레이 주식회사 | 박막 트랜지스터 기판 및 이의 제조 방법 |
| US20110175870A1 (en) * | 2008-10-20 | 2011-07-21 | Sharp Kabushiki Kaisha | Display panel substrate, display panel, and method for manufacturing display panel substrate |
| TWI654754B (zh) * | 2008-11-28 | 2019-03-21 | 日商半導體能源研究所股份有限公司 | 液晶顯示裝置 |
| JP2010181838A (ja) | 2009-02-09 | 2010-08-19 | Sharp Corp | 液晶表示装置 |
| KR101566430B1 (ko) * | 2009-03-31 | 2015-11-06 | 삼성디스플레이 주식회사 | 액정 표시 장치 |
| US8547503B2 (en) * | 2010-05-20 | 2013-10-01 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device having a pixel electrode layer positioned between first and second common electrode layers |
-
2011
- 2011-11-29 US US13/992,440 patent/US9030619B2/en not_active Expired - Fee Related
- 2011-11-29 KR KR1020137015344A patent/KR20130126639A/ko not_active Ceased
- 2011-11-29 JP JP2012547790A patent/JP5336005B2/ja not_active Expired - Fee Related
- 2011-11-29 CN CN201180059588.2A patent/CN103261959B/zh not_active Expired - Fee Related
- 2011-11-29 WO PCT/JP2011/077493 patent/WO2012077527A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342123U (ja) * | 1989-09-01 | 1991-04-22 | ||
| JPH03227062A (ja) * | 1990-01-31 | 1991-10-08 | Matsushita Electron Corp | 薄膜トランジスタアレイ |
| JPH0815670A (ja) * | 1994-06-28 | 1996-01-19 | Nec Corp | アクティブマトリクス型液晶表示装置 |
| JP2003149647A (ja) * | 2001-08-31 | 2003-05-21 | Fujitsu Display Technologies Corp | 液晶表示装置及びその製造方法 |
| JP2003273361A (ja) * | 2002-03-15 | 2003-09-26 | Sharp Corp | 半導体装置およびその製造方法 |
| JP2010156960A (ja) * | 2008-12-03 | 2010-07-15 | Semiconductor Energy Lab Co Ltd | 液晶表示装置 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014034786A1 (ja) * | 2012-08-30 | 2014-03-06 | シャープ株式会社 | アクティブマトリクス基板および液晶表示装置 |
| WO2015002204A1 (ja) * | 2013-07-05 | 2015-01-08 | 旭硝子株式会社 | 有機トランジスタ素子の製造方法 |
| JP2022066258A (ja) * | 2013-12-02 | 2022-04-28 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
| JP7289948B2 (ja) | 2013-12-02 | 2023-06-12 | 株式会社半導体エネルギー研究所 | 液晶表示装置 |
| EP3614384A1 (en) | 2014-07-28 | 2020-02-26 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Method for estimating noise in an audio signal, noise estimator, audio encoder, audio decoder, and system for transmitting audio signals |
Also Published As
| Publication number | Publication date |
|---|---|
| US9030619B2 (en) | 2015-05-12 |
| CN103261959B (zh) | 2015-11-25 |
| KR20130126639A (ko) | 2013-11-20 |
| JPWO2012077527A1 (ja) | 2014-05-19 |
| JP5336005B2 (ja) | 2013-11-06 |
| CN103261959A (zh) | 2013-08-21 |
| US20140009713A1 (en) | 2014-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5336005B2 (ja) | 半導体装置および半導体装置の製造方法、ならびに液晶表示装置 | |
| KR101345535B1 (ko) | 반도체 장치 및 표시 장치 | |
| US8908116B2 (en) | Liquid crystal display device | |
| JPWO2012086513A1 (ja) | 半導体装置および表示装置 | |
| KR20130049104A (ko) | 프린지 필드형 액정표시장치 및 그 제조방법 | |
| US20180083047A1 (en) | Tft substrate and manufacture method thereof | |
| TWI608624B (zh) | 顯示面板之薄膜電晶體及其製作方法 | |
| JP6678830B1 (ja) | 薄膜トランジスタ基板、その製造方法及びそれを備えた液晶表示装置 | |
| US9897845B2 (en) | Display | |
| US8421079B2 (en) | Pixel structure | |
| JP2019047026A (ja) | 表示装置 | |
| JP6138501B2 (ja) | 液晶表示装置の製造方法および液晶表示装置 | |
| JP2015055767A (ja) | 液晶表示パネル | |
| US20200044090A1 (en) | Thin film transistor substrate and method for manufacturing same | |
| US12164204B2 (en) | Display device | |
| JP2016048706A (ja) | アレイ基板およびその製造方法 | |
| US7411213B2 (en) | Pixel structure, thin film transistor array substrate and liquid crystal display panel | |
| US20210280610A1 (en) | Semiconductor device and display device | |
| CN101055879A (zh) | 像素结构、薄膜晶体管阵列基板以及液晶显示面板 | |
| JP2009224396A (ja) | 薄膜トランジスタ基板、およびその製造方法、並びに表示装置 | |
| KR20090023109A (ko) | 박막 트랜지스터, 그 제조방법, 및 표시장치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11846224 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2012547790 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20137015344 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13992440 Country of ref document: US |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 11846224 Country of ref document: EP Kind code of ref document: A1 |