WO2011077607A1 - アクティブマトリクス基板及びそれを備えた表示パネル、並びにアクティブマトリクス基板の製造方法 - Google Patents
アクティブマトリクス基板及びそれを備えた表示パネル、並びにアクティブマトリクス基板の製造方法 Download PDFInfo
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- WO2011077607A1 WO2011077607A1 PCT/JP2010/005179 JP2010005179W WO2011077607A1 WO 2011077607 A1 WO2011077607 A1 WO 2011077607A1 JP 2010005179 W JP2010005179 W JP 2010005179W WO 2011077607 A1 WO2011077607 A1 WO 2011077607A1
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- matrix substrate
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Images
Classifications
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- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- 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
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0231—Manufacture or treatment of multiple TFTs using masks, e.g. half-tone masks
-
- 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
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- 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
- G02F1/13606—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit having means for reducing parasitic capacitance
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- 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
- G02F1/136213—Storage capacitors associated with the pixel electrode
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- 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
- G02F1/136231—Active matrix addressed cells for reducing the number of lithographic steps
-
- 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
- G02F1/136231—Active matrix addressed cells for reducing the number of lithographic steps
- G02F1/136236—Active matrix addressed cells for reducing the number of lithographic steps using a grey or half tone lithographic process
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- 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
- G02F2201/50—Protective arrangements
- G02F2201/501—Blocking layers, e.g. against migration of ions
Definitions
- the present invention relates to an active matrix substrate, a display panel including the same, and a method for manufacturing the active matrix substrate, and more particularly to an active matrix substrate including a thin film transistor using an oxide semiconductor, a display panel including the active matrix substrate, and an active matrix.
- the present invention relates to a method for manufacturing a substrate.
- a thin film transistor (hereinafter also referred to as “TFT”) is provided as a switching element for each pixel which is the minimum unit of an image.
- a general TFT is provided in an island shape, for example, on a gate electrode provided on an insulating substrate, a gate insulating film provided so as to cover the gate electrode, and on the gate insulating film so as to overlap the gate electrode.
- the semiconductor layer includes a source electrode and a drain electrode provided on the semiconductor layer so as to face each other.
- the semiconductor layer includes an intrinsic amorphous silicon layer having a channel region and an N + amorphous silicon layer laminated on the intrinsic amorphous silicon layer so that the channel region is exposed.
- an etch stopper type TFT in which a channel protective layer is laminated on an intrinsic amorphous silicon layer has been put to practical use in order to reduce the thickness of the intrinsic amorphous silicon layer.
- Patent Document 1 discloses a TFT in which a channel protective film (channel protective layer) made of silicon nitride is provided at a predetermined position on the upper surface of a semiconductor thin film made of intrinsic amorphous silicon.
- FIG. 12 is a cross-sectional view of a conventional active matrix substrate 120 having an etch stopper type TFT 105.
- the active matrix substrate 120 can be manufactured using five photomasks as described below.
- the metal film is patterned using a first photomask to form the gate electrode 111.
- a gate insulating film 112 an intrinsic amorphous silicon film that becomes the intrinsic amorphous silicon layer 113a, and an inorganic insulating film that becomes the channel protective layer 114 are sequentially formed so as to cover the gate electrode 111, and then the inorganic insulating film is formed.
- the channel protective layer 114 is formed by patterning using the second photomask.
- N + amorphous silicon film to be the N + amorphous silicon layer 113b and a metal film to be the source electrode 115a and the drain electrode 115b are sequentially formed so as to cover the channel protective layer 114, and then the metal film and its lower layer are formed.
- N + amorphous silicon film and the underlying intrinsic amorphous silicon film are patterned using a third photomask to form intrinsic amorphous silicon layer 113a, N + amorphous silicon layer 113b, source electrode 115a and drain electrode 115b. To do.
- the inorganic insulating film is patterned using a fourth photomask to have a contact hole.
- An interlayer insulating film 116 is formed.
- the transparent conductive film is patterned using a fifth photomask to form the pixel electrode 117.
- N + amorphous silicon is used with the channel protective layer 114, the source electrode 115a and the drain electrode 115b as masks. Since the film and the intrinsic amorphous silicon film are etched, the side surface of the peripheral edge of the intrinsic amorphous silicon layer 113a is exposed from the source electrode 115a and the drain electrode 115b.
- an active matrix substrate using an oxide semiconductor layer comprising a TFT
- an active matrix substrate 120 using an amorphous silicon semiconductor layer the side surface of the peripheral edge of the oxide semiconductor semiconductor layer that is easily generated is exposed from the source electrode and the drain electrode.
- the characteristics of the TFT may deteriorate due to damage to the semiconductor layer in etching (CVD) or CVD (Chemical Vapor Deposition) in forming the interlayer insulating film.
- the present invention has been made in view of the above points, and an object of the present invention is to suppress deterioration in characteristics of a thin film transistor using an oxide semiconductor layer without increasing the number of photomasks. is there.
- a protective insulating film is provided between the source and drain electrodes and the oxide semiconductor layer so as to cover the oxide semiconductor layer.
- an active matrix substrate includes a plurality of pixel electrodes provided in a matrix and a plurality of thin film transistors respectively connected to the pixel electrodes, and the thin film transistors are provided on an insulating substrate.
- a protective insulating film is provided so as to cover it.
- the protective insulating film is provided so as to cover the oxide semiconductor layer between the source and drain electrodes and the oxide semiconductor layer.
- the inorganic insulating film is formed by CVD.
- the oxide semiconductor layer is not exposed to the surface. Therefore, the oxide semiconductor layer is hardly damaged by etching or CVD, so that deterioration in characteristics of the thin film transistor is suppressed.
- a gate electrode is formed using a first photomask
- an oxide semiconductor layer is formed using a second photomask
- a third photomask may be used in some cases.
- a source line connected to the source electrode is formed
- a protective insulating film is formed using a third (or fourth) photomask
- a pixel electrode is formed using the fourth (or fifth) photomask. Since the source electrode and the drain electrode are formed, it is manufactured using a total of four (or five) photomasks. Accordingly, deterioration in characteristics of a thin film transistor using an oxide semiconductor layer is suppressed without increasing the number of photomasks.
- the drain electrode may be formed integrally with the pixel electrodes, and the source electrode may be formed of the same material in the same layer as the pixel electrodes.
- each pixel electrode, source electrode and drain electrode are transparent. It is formed by patterning a conductive film such as a conductive film.
- a plurality of gate lines provided so as to extend in parallel with each other; and a plurality of source lines provided so as to extend in parallel with each other in a direction intersecting with each of the gate lines.
- the gate insulating film and the protective insulating film may be disposed at a crossing portion.
- the gate insulating film and the protective insulating film are disposed at the intersections between the gate lines and the source lines, the insulating films disposed at the intersections between the gate lines and the source lines. As a result, the source-gate capacitance is reduced, and the source-gate short circuit is suppressed.
- the protective insulating film may be a coating type insulating film.
- the protective insulating film is a coating type insulating film that is easily formed relatively thick, the capacitance between the source and the gate is further reduced, and the short circuit between the source and the gate is further suppressed.
- An interlayer insulating film may be provided between each pixel electrode and the protective insulating film.
- the interlayer insulating film is provided between each pixel electrode and the protective insulating film, for example, the source line can be covered and protected by the interlayer insulating film.
- the display panel according to the present invention is a display panel including an active matrix substrate and a counter substrate provided so as to face each other, and a display medium layer provided between the active matrix substrate and the counter substrate.
- the active matrix substrate includes a plurality of pixel electrodes provided in a matrix and a plurality of thin film transistors respectively connected to the pixel electrodes, and the thin film transistors are provided on a gate electrode provided on an insulating substrate.
- a gate insulating film provided so as to cover the gate electrode; and an oxide semiconductor layer provided on the gate insulating film so as to overlap the gate electrode;
- a source electrode and a drain electrode respectively connected to the layers, the source electrode and the drain electrode and the oxidation electrode Between the semiconductor layer, and a protective insulating film is provided so as to cover the oxide semiconductor layer.
- the protective insulating film is provided so as to cover the oxide semiconductor layer between the source and drain electrodes and the oxide semiconductor layer.
- the inorganic insulating film is formed by CVD.
- the oxide semiconductor layer is not exposed to the surface. Therefore, the oxide semiconductor layer is hardly damaged by etching or CVD, so that deterioration in characteristics of the thin film transistor is suppressed.
- a gate electrode is formed using a first photomask
- an oxide semiconductor layer is formed using a second photomask
- a third photomask may be used in some cases.
- a source line connected to the source electrode is formed
- a protective insulating film is formed using a third (or fourth) photomask
- a pixel electrode is formed using the fourth (or fifth) photomask. Since the source electrode and the drain electrode are formed, it is manufactured using a total of four (or five) photomasks. Accordingly, in a display panel including an active matrix substrate and a counter substrate provided to face each other, and a display medium layer provided between the two substrates, the oxide can be formed without increasing the number of photomasks. Degradation of the characteristics of the thin film transistor using the semiconductor layer of the semiconductor is suppressed.
- the method of manufacturing an active matrix substrate according to the present invention includes a plurality of pixel electrodes provided in a matrix and a plurality of thin film transistors respectively connected to the pixel electrodes, and the thin film transistors are provided on an insulating substrate.
- a gate electrode provided, a gate insulating film provided so as to cover the gate electrode, and an oxide semiconductor layer provided on the gate insulating film so as to overlap the gate electrode are provided so as to face each other.
- the insulating material film After forming the insulating material film so as to cover the oxide semiconductor layer and patterning the layer, the insulating material film is patterned so that the connection portion of the oxide semiconductor layer with the source electrode and the drain electrode is A protective insulating film forming step for forming an opening protective insulating film; and after forming a transparent conductive film so as to cover the protective insulating film, the transparent conductive film is patterned to form each pixel electrode, source electrode, and And a pixel electrode forming step of forming a drain electrode.
- the insulating material film is patterned and oxidized. Since a protective insulating film having an opening at the connection portion between the source electrode and the drain electrode of the physical semiconductor layer is formed, the transparent conductive film is etched in order to form each pixel electrode, the source electrode, and the drain electrode in the pixel electrode forming step. Thus, when patterning is performed, the oxide semiconductor layer is not exposed to the surface. Therefore, the oxide semiconductor layer is less likely to be damaged by etching, so that deterioration of TFT characteristics is suppressed.
- the active matrix substrate uses the first photomask in the gate electrode formation step, the second photomask in the semiconductor layer formation step, and the third photomask in the protective insulating film formation step, thereby forming the pixel electrode Since the fourth photomask is used in the process, it is manufactured using a total of four photomasks. Accordingly, deterioration in characteristics of a thin film transistor using an oxide semiconductor layer is suppressed without increasing the number of photomasks.
- a metal film is formed so as to cover the insulating material film, the metal film is patterned, a source line connected to the source electrode is formed, and then the insulating material film is patterned. Then, the protective insulating film may be formed.
- the metal film is formed so as to cover the insulating material film, the metal film is patterned, the source line is formed, and then the insulating material film is patterned. Since the protective insulating film is formed, the oxide semiconductor layer is covered with the insulating material film when the metal film is patterned by etching and the source line is formed. It becomes difficult to receive damage by etching.
- another insulating material film is formed so as to cover the insulating material film, and a laminated film of the insulating material film and the other insulating material film is patterned and protected by the insulating material film.
- An insulating film may be formed, and an interlayer insulating film serving as a lower layer of each pixel electrode, source electrode, and drain electrode may be formed using the other insulating material film.
- another (second) insulating material film is formed so as to cover the (first) insulating material film, and the (first) insulating material film and The laminated film of the other (second) insulating material film is patterned to form a protective insulating film from the (first) insulating material film, and an interlayer insulating film is formed from the other (second) insulating material film. Therefore, when another (second) insulating material film is formed by CVD, the oxide semiconductor layer is covered with the (first) insulating material film. Other (second) insulating material films are less susceptible to damage by CVD.
- the protective insulating film forming step after forming a photosensitive resin film on the metal film, the photosensitive resin film is exposed by half exposure, and a portion where the source line is formed is relatively thick. Forming a resist pattern in which the connection portion of the oxide semiconductor layer with the source electrode and the drain electrode is opened, and then etching the metal film exposed from the resist pattern and the insulating material film under the metal film;
- the source line may be formed by forming the protective insulating film and further etching the metal film exposed by removing a relatively thin portion by thinning the resist pattern.
- the portion where the source line is formed is relatively
- the resist pattern is formed with a thick resist pattern in which the connection portion between the source electrode and the drain electrode of the oxide semiconductor layer is opened, a protective insulating film is formed using the resist pattern, and the resist pattern is thinned Since the source line is formed, the manufacturing cost of the active matrix substrate is reduced.
- the other insulating material film is patterned to be a lower layer of each pixel electrode, source electrode, and drain electrode.
- An interlayer insulating film may be formed.
- the other (second) insulating material film after forming the other (second) insulating material film so as to cover the source line formed on the protective insulating film, the other (second) Since the insulating material film is patterned to form the interlayer insulating film, for example, the depth of the contact hole formed by dry etching before the pixel electrode forming step is reduced, and the time required for dry etching is shortened. The surface of the interlayer insulating film is hardly damaged.
- the (second) insulating material film constituting the interlayer insulating film is an organic insulating film, damage to the surface of the interlayer insulating film is further suppressed, so that the contrast due to the surface roughness of the lower layer of the pixel electrode is reduced. Reduction is suppressed.
- the insulating material film may be an inorganic insulating film.
- the insulating material film is an inorganic insulating film
- the insulating material film is formed by CVD
- the protective insulating film is specifically formed by patterning the inorganic insulating film (insulating material film). Is done.
- the protective insulating film is provided so as to cover the oxide semiconductor layer between the source and drain electrodes and the oxide semiconductor layer, the oxide semiconductor can be formed without increasing the number of photomasks. The deterioration of the characteristics of the thin film transistor using this semiconductor layer can be suppressed.
- FIG. 1 is a cross-sectional view of a liquid crystal display panel 50 according to the first embodiment.
- FIG. 2 is a plan view showing each pixel of the active matrix 20 a constituting the liquid crystal display panel 50.
- FIG. 3 is a plan view of a portion where the gate terminal 17ca of the active matrix substrate 20a is formed.
- FIG. 4 is a plan view of a portion of the active matrix substrate 20a where the source terminal 17cb is formed.
- FIG. 5 is a plan view of a portion of the active matrix substrate 20a where the gate source connection portion 17d is formed.
- FIG. 6 is a cross-sectional view of the pixel portion of the active matrix substrate 20a.
- FIG. 7 is a sectional view of a portion of the active matrix substrate 20a where the gate terminal 17ca and the source terminal 17cb are formed.
- FIG. 8 is a cross-sectional view of a portion of the active matrix substrate 20a where the gate source connection portion 17d is formed.
- FIG. 9 is an explanatory diagram showing a manufacturing process of the active matrix substrate 20a.
- FIG. 10 is an explanatory diagram illustrating a manufacturing process of the active matrix substrate 20b constituting the liquid crystal display panel according to the second embodiment.
- FIG. 11 is a cross-sectional view showing the active matrix substrate 20c constituting the liquid crystal display panel according to Embodiment 3 and the manufacturing process thereof.
- FIG. 12 is a cross-sectional view of a conventional active matrix substrate 120 having an etch stopper type TFT 105.
- Embodiment 1 of the Invention 1 to 9 show Embodiment 1 of an active matrix substrate, a display panel including the same, and a method for manufacturing the active matrix substrate according to the present invention.
- FIG. 1 is a cross-sectional view of the liquid crystal display panel 50 of the present embodiment.
- 2 is a plan view showing each pixel of the active matrix 20a constituting the liquid crystal display panel 50
- FIG. 3 is a plan view of a portion where the gate terminal 17ca is formed
- FIG. 5 is a plan view of the portion where the source terminal 17cb is formed
- FIG. 5 is a plan view of the portion where the gate source connection portion 17d is formed.
- FIG. 6 is a cross-sectional view of the pixel portion of the active matrix substrate 20a taken along line VI-VI in FIG. 2
- FIG. 7 is an active matrix substrate taken along line VII-VII in FIGS.
- FIG. 8 is a cross-sectional view of a portion where the gate terminal 17ca and the source terminal 17cb of 20a are formed.
- FIG. It is sectional drawing.
- the liquid crystal display panel 50 includes an active matrix substrate 20a and a counter substrate 30 provided so as to face each other, and a liquid crystal provided as a display medium layer between the active matrix substrate 20a and the counter substrate 30.
- a layer 40 and a sealing material 35 provided in a frame shape for adhering the active matrix substrate 20a and the counter substrate 30 to each other and enclosing the liquid crystal layer 40 between the active matrix substrate 20a and the counter substrate 30 are provided. .
- the active matrix substrate 20a is provided between a plurality of gate lines 11a provided on the insulating substrate 10 so as to extend in parallel to each other and between the gate lines 11a, and is parallel to each other.
- a plurality of capacitor lines 11b extending in parallel to each other, a plurality of source lines 15a provided so as to extend in parallel to each other in a direction orthogonal to each gate line 11a, and each intersection of each gate line 11a and each source line 15a, that is,
- the gate line 11a is drawn out to a terminal region T (see FIG. 1) outside the display region D (see FIG. 1) for displaying an image.
- the gate terminal 17ca is connected through a contact hole Cda formed in the laminated film of the film 12a, the protective insulating film 14a, and the interlayer insulating film 16a.
- the source line 15a is drawn outside the display region D (see FIG. 1), and is connected to the gate-source connection portion 17d through the contact hole Cg formed in the interlayer insulating film 16a as shown in FIGS.
- the gate-source connection portion 17d is connected to the relay wiring 11c through a contact hole Ce formed in the laminated film of the gate insulating film 12a, the protective insulating film 14a, and the interlayer insulating film 16a, as shown in FIGS.
- the relay wiring 11c is connected to the source terminal 17cb through the contact hole Cdb formed in the laminated film of the gate insulating film 12a, the protective insulating film 14a, and the interlayer insulating film 16a in the terminal region T.
- the TFT 5 includes a gate electrode (11a) provided on the insulating substrate 10, a gate insulating film 12a provided to cover the gate electrode (11a), and a gate insulating film 12a.
- the oxide semiconductor layer 13a provided in an island shape at a position corresponding to the gate electrode (11a) and the upper side of the oxide semiconductor layer 13a are provided so as to face each other and connected to the oxide semiconductor layer 13a.
- Source electrode 17a and drain electrode 17b are provided between the source electrode 17a and the drain electrode 17b and the oxide semiconductor layer 13a, as shown in FIG. 6, the portions other than the connection portion of the oxide semiconductor layer 13a to the source electrode 17a and the drain electrode 17b are covered.
- a protective insulating film 14a is provided.
- the gate electrode (11a) is a part of the gate line 11a as shown in FIG.
- the source electrode 17a is connected to the oxide semiconductor layer 13a through a contact hole Ca formed in the laminated film of the protective insulating film 14a and the interlayer insulating film 16a.
- the drain electrode 17b is connected to the oxide semiconductor layer 13a through a contact hole Cb formed in a laminated film of the protective insulating film 14a and the interlayer insulating film 16a.
- a pixel electrode P is formed extending in a pixel region surrounded by a pair of adjacent gate lines 11a and a pair of adjacent source lines 15a. Further, as shown in FIGS. 2 and 6, the drain electrode 17b is connected to the capacitor electrode 13b through a contact hole Cc formed in the laminated film of the protective insulating film 14a and the interlayer insulating film 16a, and the capacitor electrode 13b Overlaps the capacitor line 11b through the gate insulating film 12a, thereby forming an auxiliary capacitor.
- the oxide semiconductor layer 13a includes oxides such as IGZO (In—Ga—Zn—O), ISiZO (In—Si—Zn—O), and IAlZO (In—Al—Zn—O), for example. It is formed of a semiconductor film.
- the counter substrate 30 includes a black matrix (not shown) provided in a grid pattern on an insulating substrate, and colored layers (not shown) such as a red layer, a green layer, and a blue layer provided between the grids of the black matrix.
- a color filter layer (not shown) having a common electrode (not shown) provided so as to cover the color filter layer, a photo spacer (not shown) provided on the common electrode, and the common electrode And an alignment film (not shown) provided to cover.
- the liquid crystal layer 40 is made of a nematic liquid crystal material having electro-optical characteristics.
- liquid crystal display panel 50 configured as described above, in each pixel, when a gate signal is sent from a gate driver (not shown) to the gate electrode (11a) via the gate line 11a and the TFT 5 is turned on, A source signal is sent from a driver (not shown) to the source electrode 17a via the source line 15a, and a predetermined charge is written to the pixel electrode P via the oxide semiconductor layer 13a and the drain electrode 17b. At this time, a potential difference is generated between each pixel electrode P of the active matrix substrate 20a and the common electrode of the counter substrate 30, and the liquid crystal layer 40, that is, the liquid crystal capacitance of each pixel and the auxiliary capacitance connected in parallel to the liquid crystal capacitance. A predetermined voltage is applied. In the liquid crystal display panel 50, an image is displayed by adjusting the light transmittance of the liquid crystal layer 40 by changing the alignment state of the liquid crystal layer 40 according to the magnitude of the voltage applied to the liquid crystal layer 40 in each pixel. .
- FIG. 9 is a cross-sectional view showing a manufacturing process of the active matrix substrate 20a.
- the manufacturing method of this embodiment includes an active matrix substrate manufacturing process, a counter substrate manufacturing process, and a liquid crystal injection process.
- a titanium film (thickness of about 50 nm), an aluminum film (thickness of about 200 nm), a titanium film (thickness of about 100 nm), and the like are sequentially laminated on the entire substrate of the insulating substrate 10 such as a glass substrate.
- 9A is formed by performing photolithography using the first photomask, dry etching of the first metal film, stripping of the resist, and cleaning.
- a gate line (gate electrode) 11a, a capacitor line 11b, and a relay wiring 11c are formed (gate electrode forming step).
- a silicon oxide film (thickness of about 200 nm to 500 nm) is formed on the entire substrate on which the gate line (gate electrode) 11a, the capacitor line 11b, and the relay wiring 11c are formed by a CVD (Chemical Vapor Deposition) method.
- a CVD Chemical Vapor Deposition
- an IGZO-based oxide semiconductor film (thickness of about 30 nm to 300 nm) is formed by a sputtering method, and then photolithography and oxidation using a second photomask. As shown in FIG.
- the oxide semiconductor layer 13a and the capacitor electrode 13b are formed by performing wet etching of the physical semiconductor film, peeling of the resist, and cleaning (semiconductor layer forming step).
- the single-layer inorganic insulating film 12 is illustrated, but for example, the lower layer is composed of a silicon nitride film (thickness of about 200 nm to 500 nm) and the upper layer is a silicon oxide film (for example, about 20 nm to 150 nm). May be a multi-layered inorganic first insulating film 12.
- the first substrate such as a silicon oxide film (having a thickness of about 50 nm to 200 nm) is formed on the entire substrate on which the oxide semiconductor layer 13a and the capacitor electrode 13b are formed by CVD.
- the inorganic insulating film (insulating material film) 14 is formed, for example, a titanium film (thickness of about 50 nm), an aluminum film (thickness of about 200 nm), a titanium film (thickness of about 100 nm), etc. are formed by sputtering.
- a second metal film 15 laminated in order is formed.
- the single-layer first inorganic insulating film 14 is illustrated.
- a second inorganic insulating film (another insulating material film) 16 such as a silicon oxide film (having a thickness of about 50 nm to 300 nm) is formed on the entire substrate on which the source line 15a is formed by a CVD method.
- photolithography using a fourth photomask, wet etching of the second inorganic insulating film 16, wet etching of a laminated film of the first inorganic insulating film 14 and the second inorganic insulating film 16, and an inorganic insulating film 12, wet etching of the laminated film of the first inorganic insulating film 14 and the second inorganic insulating film 16, peeling of the resist, and cleaning are performed, as shown in FIG.
- the single-layer second inorganic insulating film 16 is exemplified, but for example, a multi-layer second inorganic insulating film in which the lower layer is formed of a silicon oxide film and the upper layer is formed of a silicon nitride film. The film 16 may be used.
- a transparent conductive film 17 such as ITO (Indium Tin Oxide, thickness of about 100 nm) is formed by sputtering on the entire substrate on which the gate insulating film 12a, the protective insulating film 14a, and the interlayer insulating film 16a are formed. Then, by performing photolithography using a fifth photomask, dry etching of the transparent conductive film 17, peeling of the resist, and cleaning, as shown in FIG. 9F, the source electrode 17a and the drain electrode 17b (pixel electrode P), gate terminal 17ca, source terminal 17cb, and gate source connection part 17d (see FIG. 8) are formed (pixel electrode forming step).
- ITO Indium Tin Oxide, thickness of about 100 nm
- polyimide resin is applied to the entire substrate on which the source electrode 17a, the drain electrode 17b (pixel electrode P), the gate terminal 17ca, the source terminal 17cb, and the gate source connection portion 17d are formed by a printing method, and then a rubbing process As a result, an alignment film is formed to a thickness of about 100 nm.
- the active matrix substrate 20a can be manufactured.
- ⁇ Opposite substrate manufacturing process First, an acrylic photosensitive resin in which fine particles such as carbon are dispersed is applied to the entire substrate of an insulating substrate such as a glass substrate by spin coating, for example, and the applied photosensitive resin is passed through a photomask. After the exposure, development is performed to form a black matrix having a thickness of about 1.5 ⁇ m.
- an acrylic photosensitive resin colored in red, green, or blue is applied to the entire substrate on which the black matrix is formed by a spin coating method, and the applied photosensitive resin is applied to a photomask.
- patterning is performed by developing to form a colored layer (for example, a red layer) of a selected color with a thickness of about 2.0 ⁇ m.
- other two colors for example, a green layer and a blue layer
- a thickness of about 2.0 ⁇ m to form a color filter layer.
- a transparent conductive film such as, for example, ITO is formed on the substrate on which the color filter layer is formed by sputtering, and the common electrode is formed to a thickness of about 100 nm.
- a photosensitive resin is applied to the entire substrate on which the common electrode is formed by a spin coating method, and the applied photosensitive resin is exposed through a photomask and then developed, thereby developing a photo spacer. It is formed to a thickness of about 4 ⁇ m.
- a polyimide resin is applied to the entire substrate on which the photo spacers are formed by a printing method, and then a rubbing process is performed to form an alignment film with a thickness of about 100 nm.
- the counter substrate 30 can be manufactured as described above.
- a seal material 35 made of ultraviolet curing and thermosetting resin or the like is drawn in a frame shape on the counter substrate 30 manufactured in the counter substrate manufacturing step.
- the bonded body is released to atmospheric pressure. By doing, the surface and the back surface of the bonded body are pressurized.
- the sealing material 35 is cured by heating the bonded body.
- the liquid crystal display panel 50 of the present embodiment can be manufactured.
- the liquid crystal display panel 50 including the active matrix substrate 20a, and the manufacturing method of the active matrix substrate 20a it is formed in the semiconductor layer forming step in the protective insulating film forming step.
- the first inorganic insulating film 14 is patterned to form the source electrode 17a and the drain electrode 17b of the oxide semiconductor layer 13a.
- the transparent conductive film 17 is patterned by etching in order to form each pixel electrode P, source electrode 17a, and drain electrode 17b in the pixel electrode formation step, the protective insulating film 14a having an opening at the connection portion is formed.
- the oxide semiconductor layer 13a is not exposed on the surface. Therefore, the oxide semiconductor layer 13a is less likely to be damaged by etching, so that deterioration of the characteristics of the TFT 5 can be suppressed.
- the second metal film 15 is patterned, and the source line 15a is formed. Since the protective insulating film 14a is formed by patterning the first inorganic insulating film 14, the oxide semiconductor layer 13a is formed when the source line 15a is formed by patterning the second metal film 15 by etching.
- the oxide semiconductor layer 13a is not easily damaged by the etching of the second metal film 15 because it is covered with the first inorganic insulating film 14.
- a second inorganic insulating film 16 is formed so as to cover the first inorganic insulating film 14, and a laminated film of the first inorganic insulating film 14 and the second inorganic insulating film 16 is formed.
- the protective insulating film 14a is formed by the first inorganic insulating film 14, and the interlayer insulating film 16a is formed by the second inorganic insulating film 16. Therefore, the second inorganic insulating film 16 is formed by CVD.
- the oxide semiconductor layer 13a is covered with the first inorganic insulating film 14, and the oxide semiconductor layer 13a is hardly damaged by the CVD of the second inorganic insulating film 16.
- the active matrix substrate 20a uses the first photomask in the gate electrode formation step, the second photomask in the semiconductor layer formation step, and the third and fourth photomasks in the protective insulating film formation step. Since the fifth photomask is used in the pixel electrode formation step, the photomask is manufactured using a total of five photomasks. Therefore, in the active matrix substrate 20a and the liquid crystal display panel 50 including the active matrix substrate 20a, it is possible to suppress deterioration in characteristics of the TFT using the oxide semiconductor layer without increasing the number of photomasks.
- the drain electrode 17b is formed integrally with each pixel electrode P, and the source electrode 17a is formed of the same material in the same layer as each pixel electrode P.
- the pixel electrode P, the source electrode 17a, and the drain electrode 17b can be formed by patterning a conductive film such as the transparent conductive film 17.
- the gate insulating film 12a and the protective insulating film 14a are arranged at the intersections of the gate lines 11a and the source lines 15a.
- the insulating film disposed at the intersection with the source line 15a is thickened, so that the capacitance between the source and the gate can be reduced and the short circuit between the source and the gate can be suppressed.
- the manufacturing method of the active matrix substrate 20a using five photomasks is exemplified, but the second metal film 15 is not formed and patterned, and is formed on the metal film 15.
- the source line (15a) in the same layer as each pixel electrode P from the same material (transparent conductive film 17), an active matrix substrate can be manufactured using four photomasks.
- FIG. 10 is an explanatory view showing a manufacturing process of the active matrix substrate 20b constituting the liquid crystal display panel of the present embodiment.
- the same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof will be omitted.
- the liquid crystal display panel of this embodiment includes an active matrix substrate 20b and a counter substrate 30 (see FIG. 1) provided to face each other, and a liquid crystal layer 40 (between the active matrix substrate 20b and the counter substrate 30). 1).
- the TFT 5 includes a gate electrode (11a) provided on the insulating substrate 10 and a gate insulating film 12b provided so as to cover the gate electrode (11a). And the oxide semiconductor layer 13a provided in an island shape at a position corresponding to the gate electrode (11a) on the gate insulating film 12b and the upper side of the oxide semiconductor layer 13a so as to face each other.
- a source electrode 17a and a drain electrode 17b connected to the semiconductor layer 13a are provided.
- the source electrode 17a and the drain electrode 17b and the oxide semiconductor layer 13a as shown in FIG. 10E, other than the connection portion between the source electrode 17a and the drain electrode 17b of the oxide semiconductor layer 13a.
- a protective insulating film 14b is provided so as to cover the surface.
- the source electrode 17a is connected to the oxide semiconductor layer 13a through a contact hole Ca formed in the (protective insulating film 14b) and the interlayer insulating film 16b. It is connected to the source line 15a through a contact hole Cf formed in the interlayer insulating film 16b.
- the drain electrode 17b is connected to the oxide semiconductor layer 13a via a contact hole Cb formed in the (protective insulating film 14b) and the interlayer insulating film 16b.
- a pixel electrode P is formed extending in the pixel region.
- the manufacturing method of the present embodiment only changes the protective insulating film forming process in the active matrix substrate manufacturing process of the first embodiment, and therefore the description will focus on the protective film forming process.
- the entire substrate on which the oxide semiconductor layer 13a and the capacitor electrode 13b are formed by performing the semiconductor layer forming step in the active matrix substrate manufacturing step of the first embodiment is formed by CVD.
- a first inorganic insulating film (insulating material film) 14 such as a silicon oxide film (thickness of about 50 nm to 200 nm)
- a sputtering method is used to form, for example, a titanium film (thickness of about 50 nm), aluminum, etc.
- a second metal film 15 in which a film (thickness of about 200 nm) and a titanium film (thickness of about 100 nm) are sequentially stacked is formed, and a photosensitive resin film R is applied by spin coating, and the coating is performed.
- the exposed photosensitive resin film R is exposed through a half-tone third photomask and then developed to obtain a source as shown in FIG. Become part relatively thicker 15a, the contact holes Ca, Cb, Cc, the portion forming the like Cda and Cdb forming a resist pattern Ra was opened.
- a gate insulating film 12b, a protective insulating film 14b, and a metal layer 15b are formed.
- the source line 15a is formed as shown in FIG. 10B.
- a second inorganic insulating film (another insulating material film) 16 such as a silicon oxide film (having a thickness of about 50 nm to 300 nm) is formed on the entire substrate on which the source line 15a is formed by a CVD method.
- the interlayer insulating film 16b is formed as shown in FIG. Form (protective insulating film forming step).
- a transparent conductive film 17 such as, for example, ITO (thickness of about 100 nm) is formed on the entire substrate on which the interlayer insulating film 16b is formed by sputtering, and then photolithography using a fifth photomask. Then, by performing dry etching of the transparent conductive film 17, peeling of the resist, and cleaning, as shown in FIG. 10E, the source electrode 17a, the drain electrode 17b (pixel electrode P), the gate terminal 17ca, and the source terminal 17cb Etc. (pixel electrode forming step).
- ITO thickness of about 100 nm
- a polyimide resin is applied to the entire substrate on which the source electrode 17a, the drain electrode 17b (pixel electrode P), the gate terminal 17ca, the source terminal 17cb, and the like are formed, and then a rubbing process is performed.
- An alignment film is formed to a thickness of about 100 nm.
- the active matrix substrate 20b can be manufactured as described above.
- the liquid crystal display panel including the active matrix substrate 20b, and the method of manufacturing the active matrix substrate 20a, the source electrode 17a and the drain electrode are formed as in the first embodiment. Since the protective insulating film 14b is provided so as to cover the oxide semiconductor layer 13a between the oxide semiconductor layer 13a and the oxide semiconductor layer 13a, a TFT using an oxide semiconductor semiconductor layer without increasing the number of photomasks The deterioration of the characteristics can be suppressed.
- a single photomask capable of half-tone (or gray-tone) half-exposure having a transmissive part, a light-shielding part, and a semi-transmissive part is provided.
- a resist pattern Ra in which a portion where the source line 15a is formed is relatively thick and a connection portion between the source electrode 17a and the drain electrode 17b of the oxide semiconductor layer 13a is opened is formed, and the resist pattern Ra is used. Since the protective insulating film 14b is formed and the source line 15a is formed using the resist pattern Rb obtained by thinning the resist pattern Ra, the manufacturing cost of the active matrix substrate 20b can be reduced.
- the second inorganic insulating film 16 is formed so as to cover the source line 15a formed on the protective insulating film 14b in the protective insulating film forming step.
- the second inorganic insulating film 16 is patterned to form the interlayer insulating film 16b. Therefore, for example, the depth of the contact hole formed by dry etching before the pixel electrode forming step becomes shallow, and the dry etching is performed. The time required for this is shortened, and the surface of the interlayer insulating film 16b is hardly damaged.
- the interlayer insulating film 16a is formed of an inorganic insulating film.
- the interlayer insulating film is formed of an organic insulating film, damage to the surface of the interlayer insulating film is further suppressed. Therefore, it is possible to suppress a decrease in contrast due to surface roughness of the lower layer of the pixel electrode.
- the gate insulating film 12b and the protective insulating film 14b are arranged at the intersections of the gate lines 11a and the source lines 15a.
- the insulating film disposed at the intersection with the source line 15a is thickened, so that the capacitance between the source and the gate can be reduced and the short circuit between the source and the gate can be suppressed.
- FIG. 11A is a cross-sectional view of the active matrix substrate 20c constituting the liquid crystal display panel of the present embodiment
- FIG. 11B is a cross-sectional view illustrating a part of the manufacturing process of the active matrix substrate 20c. .
- the method of forming the insulating material film that forms the protective insulating films 14a and 14b by the CVD method is exemplified.
- the insulating material film that forms the protective insulating film 14c is organic.
- a method for forming a film by applying and baking a resin will be exemplified.
- the liquid crystal display panel of the present embodiment includes an active matrix substrate 20c and a counter substrate 30 (see FIG. 1) provided so as to face each other, and a liquid crystal layer 40 (see FIG. 1) provided between the active matrix substrate 20c and the counter substrate 30. 1).
- the source electrode 17a and the drain electrode 17b of the TFT 5 and the oxide semiconductor layer 13a are connected to the oxide semiconductor layer 13a through a contact hole Ca formed in the (protective insulating film 14c and) the interlayer insulating film 16b.
- the source line 15a is connected through a contact hole Cf formed in the interlayer insulating film 16b.
- the drain electrode 17b is connected to the oxide semiconductor layer 13a through a contact hole Cb formed in the (protective insulating film 14c) and the interlayer insulating film 16b.
- a pixel electrode P is formed extending in the pixel region.
- the protective insulating film 14c is a coating type insulating film having a thickness of about 1.5 ⁇ m and thicker than the protective insulating films 14a and 14b of the first and second embodiments.
- the active matrix substrate 20c of the present embodiment uses a method for forming the first inorganic insulating film 14 in the protective insulating film forming process of the second embodiment, as shown in FIG. After applying acrylic resin to a thickness of about 1.5 ⁇ m by spin coating on the entire substrate on which the capacitor electrode 13b is formed, pre-baking at 150 ° C. for about 5 minutes and post-baking at 200 ° C. for about 1 hour are performed. By carrying out, it can manufacture by changing to the method of forming organic insulating film 14s into a film.
- the liquid crystal display panel including the active matrix substrate 20c, and the manufacturing method of the active matrix substrate 20c, the source electrode 17a and Since the protective insulating film 14c is provided between the drain electrode 17b and the oxide semiconductor layer 13a so as to cover the oxide semiconductor layer 13a, the oxide semiconductor semiconductor layer can be used without increasing the number of photomasks. The deterioration of the TFT characteristics can be suppressed.
- the gate insulating film 12b and the protective insulating film 14c are arranged at the intersections of the gate lines 11a and the source lines 15a, and the protective insulating film 14c is compared. Since this is a coating type insulating film that can be easily formed to be thick, the insulating film disposed at the intersection of each gate line 11a and each source line 15a is thickened, and the capacitance between the source and gate is further reduced. In addition, the short circuit between the source and the gate can be further suppressed.
- the configuration in which the interlayer insulating films 16a and 16b are provided on the protective insulating films 14a, 14b, and 14c is illustrated.
- the interlayer insulating film on the protective insulating films 14a, 14b, and 14c is illustrated.
- the films 16a and 16b may be omitted.
- an active matrix substrate having a Cs on Common structure is illustrated, but the present invention can also be applied to an active matrix substrate having a Cs on Gate structure.
- an active matrix substrate in which the electrode of the TFT connected to the pixel electrode is used as the drain electrode is illustrated.
- the present invention is an active matrix in which the electrode of the TFT connected to the pixel electrode is referred to as a source electrode. It can also be applied to a substrate.
- the present invention can suppress the deterioration of characteristics of a TFT using an oxide semiconductor layer without increasing the number of photomasks. This is useful for liquid crystal display panels.
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Abstract
Description
図1~図9は、本発明に係るアクティブマトリクス基板及びそれを備えた表示パネル、並びにアクティブマトリクス基板の製造方法の実施形態1を示している。具体的に図1は、本実施形態の液晶表示パネル50の断面図である。また、図2は、液晶表示パネル50を構成するアクティブマトリクス20aの各画素を示す平面図であり、図3は、そのゲート端子17caが形成された部分の平面図であり、図4は、そのソース端子17cbが形成された部分の平面図であり、図5は、そのゲートソース接続部17dが形成された部分の平面図である。さらに、図6は、図2中のVI-VI線に沿ったアクティブマトリクス基板20aの画素部の断面図であり、図7は、図3及び図4のVII-VII線に沿ったアクティブマトリクス基板20aのゲート端子17ca及びソース端子17cbが形成された部分の断面図であり、図8は、図5中のVIII-VIII線に沿ったアクティブマトリクス20aのゲートソース接続部17dが形成された部分の断面図である。
まず、ガラス基板などの絶縁基板10の基板全体に、スパッタリング法により、例えば、チタン膜(厚さ50nm程度)、アルミニウム膜(厚さ200nm程度)及びチタン膜(厚さ100nm程度)などを順に積層した第1の金属膜を成膜し、その後、第1のフォトマスクを用いたフォトリソグラフィ、第1の金属膜のドライエッチング、レジストの剥離、及び洗浄を行うことにより、図9(a)に示すように、ゲート線(ゲート電極)11a、容量線11b及び中継配線11cを形成する(ゲート電極形成工程)。
まず、ガラス基板などの絶縁基板の基板全体に、スピンコート法により、例えば、カーボンなどの微粒子が分散されたアクリル系の感光性樹脂を塗布し、その塗布された感光性樹脂をフォトマスクを介して露光した後に、現像することにより、ブラックマトリクスを厚さ1.5μm程度に形成する。
まず、例えば、ディスペンサを用いて、上記対向基板作製工程で作製された対向基板30に、紫外線硬化及び熱硬化併用型樹脂などにより構成されたシール材35を枠状に描画する。
図10は、本実施形態の液晶表示パネルを構成するアクティブマトリクス基板20bの製造工程を示す説明図である。なお、以下の各実施形態において、図1~図9と同じ部分については同じ符号を付して、その詳細な説明を省略する。
図11(a)は、本実施形態の液晶表示パネルを構成するアクティブマトリクス基板20cの断面図であり、図11(b)は、アクティブマトリクス基板20cの製造工程の一部を示す断面図である。
R 感光性樹脂膜
Ra,Rb レジストパターン
5 TFT
10 絶縁基板
11a ゲート線(ゲート電極)
12a ゲート絶縁膜
13a 酸化物半導体層
14 第1の無機絶縁膜(絶縁材料膜)
14a,14b,14c 保護絶縁膜
15 金属膜
15a ソース線
16 第2の無機絶縁膜(他の絶縁材料膜)
16a 層間絶縁膜
17 透明導電膜
17a ソース電極
17b ドレイン電極
20a,20b,20c アクティブマトリクス基板
30 対向基板
40 液晶層(表示媒体層)
50 液晶表示パネル
Claims (12)
- マトリクス状に設けられた複数の画素電極と、
上記各画素電極にそれぞれ接続された複数の薄膜トランジスタとを備え、
上記各薄膜トランジスタが、絶縁基板に設けられたゲート電極と、該ゲート電極を覆うように設けられたゲート絶縁膜と、該ゲート絶縁膜上に上記ゲート電極に重なるように設けられた酸化物半導体層と、互いに対峙するように設けられ、該酸化物半導体層にそれぞれ接続されたソース電極及びドレイン電極とを備えたアクティブマトリクス基板であって、
上記ソース電極及びドレイン電極と上記酸化物半導体層との間には、該酸化物半導体層を覆うように保護絶縁膜が設けられていることを特徴とするアクティブマトリクス基板。 - 請求項1に記載されたアクティブマトリクス基板において、
上記ドレイン電極は、上記各画素電極と一体に形成され、
上記ソース電極は、上記各画素電極と同一層に同一材料により形成されていることを特徴とするアクティブマトリクス基板。 - 請求項1又は2に記載されたアクティブマトリクス基板において、
互いに平行に延びるように設けられた複数のゲート線と、
上記各ゲート線と交差する方向に互いに平行に延びるように設けられた複数のソース線とを備え、
上記各ゲート線と上記各ソース線との交差部分には、上記ゲート絶縁膜及び保護絶縁膜が配置されていることを特徴とするアクティブマトリクス基板。 - 請求項3に記載されたアクティブマトリクス基板において、
上記保護絶縁膜は、塗布型の絶縁膜であることを特徴とするアクティブマトリクス基板。 - 請求項1乃至4の何れか1つに記載されたアクティブマトリクス基板において、
上記各画素電極と上記保護絶縁膜との間には、層間絶縁膜が設けられていることを特徴とするアクティブマトリクス基板。 - 互いに対向するように設けられたアクティブマトリクス基板及び対向基板と、
上記アクティブマトリクス基板及び対向基板の間に設けられた表示媒体層とを備えた表示パネルであって、
上記アクティブマトリクス基板は、
マトリクス状に設けられた複数の画素電極と、
上記各画素電極にそれぞれ接続された複数の薄膜トランジスタとを備え、
上記各薄膜トランジスタが、絶縁基板に設けられたゲート電極と、該ゲート電極を覆うように設けられたゲート絶縁膜と、該ゲート絶縁膜上に上記ゲート電極に重なるように設けられた酸化物半導体層と、互いに対峙するように設けられ、該酸化物半導体層にそれぞれ接続されたソース電極及びドレイン電極とを備え、
上記ソース電極及びドレイン電極と上記酸化物半導体層との間には、該酸化物半導体層を覆うように保護絶縁膜が設けられていることを特徴とする表示パネル。 - マトリクス状に設けられた複数の画素電極と、
上記各画素電極にそれぞれ接続された複数の薄膜トランジスタとを備え、
上記各薄膜トランジスタが、絶縁基板に設けられたゲート電極と、該ゲート電極を覆うように設けられたゲート絶縁膜と、該ゲート絶縁膜上に上記ゲート電極に重なるように設けられた酸化物半導体層と、互いに対峙するように設けられ、該酸化物半導体層にそれぞれ接続されたソース電極及びドレイン電極とを備えたアクティブマトリクス基板を製造する方法であって、
絶縁基板上に上記ゲート電極を形成するゲート電極形成工程と、
上記ゲート電極を覆うように上記ゲート絶縁膜を形成した後に、該ゲート絶縁膜上に上記酸化物半導体層を形成する半導体層形成工程と、
上記酸化物半導体層を覆うように、絶縁材料膜を成膜した後に、該絶縁材料膜をパターニングして、上記酸化物半導体層の上記ソース電極及びドレイン電極との接続部分が開口した保護絶縁膜を形成する保護絶縁膜形成工程と、
上記保護絶縁膜を覆うように、透明導電膜を成膜した後に、該透明導電膜をパターニングして、上記各画素電極、ソース電極及びドレイン電極を形成する画素電極形成工程とを備えることを特徴とするアクティブマトリクス基板の製造方法。 - 請求項7に記載されたアクティブマトリクス基板の製造方法において、
上記保護絶縁膜形成工程では、上記絶縁材料膜を覆うように金属膜を成膜し、該金属膜をパターニングして、上記ソース電極に接続するソース線を形成した後に、上記絶縁材料膜をパターニングして、上記保護絶縁膜を形成することを特徴とするアクティブマトリクス基板の製造方法。 - 請求項7又は8に記載されたアクティブマトリクス基板の製造方法において、
上記保護絶縁膜形成工程では、上記絶縁材料膜を覆うように他の絶縁材料膜を成膜し、該絶縁材料膜及び他の絶縁材料膜の積層膜をパターニングして、該絶縁材料膜により保護絶縁膜を形成すると共に、該他の絶縁材料膜により上記各画素電極、ソース電極及びドレイン電極の下層となる層間絶縁膜を形成することを特徴とするアクティブマトリクス基板の製造方法。 - 請求項8に記載されたアクティブマトリクス基板の製造方法において、
上記保護絶縁膜形成工程では、上記金属膜上に感光性樹脂膜を成膜した後に、該感光性樹脂膜をハーフ露光で露光して、上記ソース線を形成する部分が相対的に厚く、上記酸化物半導体層の上記ソース電極及びドレイン電極との接続部分が開口したレジストパターンを形成し、続いて、該レジストパターンから露出する金属膜及び該金属膜の下層の絶縁材料膜をエッチングして、上記保護絶縁膜を形成し、さらに、該レジストパターンを薄膜化することにより相対的に薄い部分を除去して露出させた金属膜をエッチングして、上記ソース線を形成することを特徴とするアクティブマトリクス基板の製造方法。 - 請求項10に記載されたアクティブマトリクス基板の製造方法において、
上記保護絶縁膜形成工程では、上記ソース線を覆うように、他の絶縁材料膜を成膜した後に、該他の絶縁材料膜をパターニングして、上記各画素電極、ソース電極及びドレイン電極の下層となる層間絶縁膜を形成することを特徴とするアクティブマトリクス基板の製造方法。 - 請求項7乃至11の何れか1つに記載されたアクティブマトリクス基板の製造方法において、
上記絶縁材料膜は、無機絶縁膜であることを特徴とするアクティブマトリクス基板の製造方法。
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---|---|---|---|---|
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WO2017127573A1 (en) | 2016-01-19 | 2017-07-27 | Nlight, Inc. | Method of processing calibration data in 3d laser scanner systems |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04130312A (ja) * | 1990-09-21 | 1992-05-01 | Casio Comput Co Ltd | Tftパネル |
JP2002148658A (ja) | 2000-11-15 | 2002-05-22 | Casio Comput Co Ltd | 薄膜トランジスタパネル |
JP2007073559A (ja) * | 2005-09-02 | 2007-03-22 | Kochi Prefecture Sangyo Shinko Center | 薄膜トランジスタの製法 |
JP2007235102A (ja) * | 2006-01-31 | 2007-09-13 | Idemitsu Kosan Co Ltd | Tft基板及びtft基板の製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2755376B2 (ja) * | 1994-06-03 | 1998-05-20 | 株式会社フロンテック | 電気光学素子の製造方法 |
JP3391343B2 (ja) * | 1999-10-26 | 2003-03-31 | 日本電気株式会社 | アクティブマトリクス基板及びその製造方法 |
JP2006100760A (ja) * | 2004-09-02 | 2006-04-13 | Casio Comput Co Ltd | 薄膜トランジスタおよびその製造方法 |
JP4777078B2 (ja) * | 2005-01-28 | 2011-09-21 | 株式会社半導体エネルギー研究所 | 半導体装置の作製方法 |
CN102244103A (zh) * | 2006-01-31 | 2011-11-16 | 出光兴产株式会社 | Tft基板 |
JP2007258675A (ja) * | 2006-02-21 | 2007-10-04 | Idemitsu Kosan Co Ltd | Tft基板及び反射型tft基板並びにそれらの製造方法 |
JP2008112136A (ja) * | 2006-10-04 | 2008-05-15 | Mitsubishi Electric Corp | 表示装置及びその製造方法 |
JP5007171B2 (ja) * | 2007-02-13 | 2012-08-22 | 三菱電機株式会社 | 薄膜トランジスタアレイ基板、その製造方法、及び表示装置 |
JP5561899B2 (ja) * | 2007-10-19 | 2014-07-30 | キヤノン株式会社 | 表示装置の製造方法 |
KR100936874B1 (ko) * | 2007-12-18 | 2010-01-14 | 삼성모바일디스플레이주식회사 | 박막 트랜지스터의 제조 방법 및 박막 트랜지스터를구비하는 유기전계발광 표시 장치의 제조 방법 |
KR101533391B1 (ko) * | 2008-08-06 | 2015-07-02 | 삼성디스플레이 주식회사 | 박막 트랜지스터 기판과 그 제조 방법 |
-
2010
- 2010-08-23 CN CN2010800580079A patent/CN102696112A/zh active Pending
- 2010-08-23 EP EP10838848.9A patent/EP2518772A4/en not_active Withdrawn
- 2010-08-23 JP JP2011547236A patent/JP5095865B2/ja not_active Expired - Fee Related
- 2010-08-23 US US13/517,079 patent/US20130023086A1/en not_active Abandoned
- 2010-08-23 WO PCT/JP2010/005179 patent/WO2011077607A1/ja active Application Filing
-
2012
- 2012-07-24 JP JP2012163419A patent/JP2012248865A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04130312A (ja) * | 1990-09-21 | 1992-05-01 | Casio Comput Co Ltd | Tftパネル |
JP2002148658A (ja) | 2000-11-15 | 2002-05-22 | Casio Comput Co Ltd | 薄膜トランジスタパネル |
JP2007073559A (ja) * | 2005-09-02 | 2007-03-22 | Kochi Prefecture Sangyo Shinko Center | 薄膜トランジスタの製法 |
JP2007235102A (ja) * | 2006-01-31 | 2007-09-13 | Idemitsu Kosan Co Ltd | Tft基板及びtft基板の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2518772A4 |
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Also Published As
Publication number | Publication date |
---|---|
JP5095865B2 (ja) | 2012-12-12 |
JPWO2011077607A1 (ja) | 2013-05-02 |
EP2518772A1 (en) | 2012-10-31 |
CN102696112A (zh) | 2012-09-26 |
US20130023086A1 (en) | 2013-01-24 |
JP2012248865A (ja) | 2012-12-13 |
EP2518772A4 (en) | 2016-09-07 |
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