WO2010137206A1 - アクティブマトリクス基板及びそれを備えた表示装置 - Google Patents
アクティブマトリクス基板及びそれを備えた表示装置 Download PDFInfo
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- WO2010137206A1 WO2010137206A1 PCT/JP2010/001194 JP2010001194W WO2010137206A1 WO 2010137206 A1 WO2010137206 A1 WO 2010137206A1 JP 2010001194 W JP2010001194 W JP 2010001194W WO 2010137206 A1 WO2010137206 A1 WO 2010137206A1
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- insulating film
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- substrate
- reflective layer
- active matrix
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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
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133345—Insulating layers
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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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
- G02F1/136259—Repairing; Defects
- G02F1/136263—Line defects
Definitions
- the present invention relates to an active matrix substrate and a display device including the active matrix substrate.
- TFTs thin film transistors
- a pixel electrode is formed on the uppermost layer of the active matrix substrate in order to increase the aperture ratio of the display screen.
- a plurality of TFTs, gate wirings, source wirings and the like are formed, and an interlayer insulating film is formed so as to cover these TFTs and wirings.
- a pixel electrode is formed on the surface of the interlayer insulating film.
- the pixel electrode on the interlayer insulating film can be extended to the gate wiring and the source wiring, so that the area of the pixel electrode can be increased. Further, by forming the interlayer insulating film thickly by spin coating, the parasitic capacitance between the pixel electrode and the gate wiring and the source wiring is reduced. Therefore, it is possible to obtain a liquid crystal display device in which the occurrence of crosstalk is suppressed and the aperture ratio is large.
- the end portion of the interlayer insulating film is formed, and a plurality of terminals are formed at the end portion of the wiring.
- the plurality of terminals are arranged side by side at a predetermined interval, and an external circuit member such as an IC driver or an FPC is mounted thereon.
- Patent Document 1 discloses forming an organic thin film pattern between terminals. As a result, the pixel electrode material on the organic thin film pattern is quickly etched so that the pixel electrode material does not remain between the terminals.
- Patent Document 2 discloses that an insulating film identical to an interlayer insulating film is provided between terminals.
- Patent Document 3 discloses forming an insulating film for preventing a short circuit covering each terminal along the end of the interlayer insulating film.
- Patent Document 4 discloses that the pixel electrode is appropriately formed by reducing the reflection of the light transmitted through the resist by the wiring while overexposing the resist so that no resist residue is generated. .
- the boundary line at the end portion of the interlayer insulating film is formed in a concavo-convex shape when viewed from the normal direction of the substrate surface, so that the inclination angle at the end portion of the interlayer insulating film is gently reduced. It is disclosed to suppress the generation of resist residues.
- an active matrix substrate disclosed in Patent Document 6 is formed on a gate insulating film 101 formed on a glass substrate and on a gate insulating film 101, and has a predetermined structure.
- a plurality of terminals 102 arranged at intervals and an interlayer insulating film 103 formed on the gate insulating film 101 so as to cover a part of each terminal 102 are provided.
- a convex portion 104 protruding between the terminals 102 is formed at the end portion of the interlayer insulating film 103.
- the inclination angle of the protrusion 104 with respect to the glass substrate surface is smaller than the inclination angle of the end of the interlayer insulating film 103 where the protrusion 104 is not formed. This prevents a resist residue from being formed on the convex portion 104 and prevents a short circuit between the terminals 102 due to the resist residue.
- Patent Document 6 describes an example in which the convex portion 104 has a width of 70 ⁇ m and a protruding length of 50 ⁇ m, and an example in which the width is 20 ⁇ m and the protruding length is 30 ⁇ m.
- the active matrix substrate is used in a display device that is small and performs high-detail display, the interval between the terminals becomes very narrow, and thus it is difficult to arrange the convex portions 104.
- the pitch between the source terminals is 25 ⁇ m.
- the space of 13 ⁇ m is very narrow.
- the pitch between the gate terminal and the source terminal is 17 ⁇ m, and the space between these terminals is 13 ⁇ m. It is very narrow.
- the present invention has been made in view of such various points, and an object thereof is to suppress a short circuit between terminals and facilitate connection to terminals of an external circuit.
- an active matrix substrate includes an insulating substrate, a plurality of switching elements provided on the insulating substrate, and a plurality of switching elements provided on the insulating substrate.
- An active matrix substrate having a plurality of terminals arranged at intervals, wherein at least a part of the plurality of terminals are exposed from the interlayer insulating film, and are normal to the surface of the insulating substrate When viewed from the direction, light is transmitted to the side opposite to the insulating substrate in a region that is at least a part between the adjacent terminals and includes an edge of the interlayer insulating film. Reflective layer morphism is provided.
- the reflective layer may be disposed independently between the adjacent terminals.
- the reflective layer may be formed across the terminals in the width direction of the terminals.
- the reflection layer is preferably composed of a metal layer.
- An external circuit may be connected to the plurality of terminals.
- the display device includes an active matrix substrate, a counter substrate disposed to face the active matrix substrate, and a display medium layer provided between the active matrix substrate and the counter substrate.
- the active matrix substrate includes an insulating substrate, a plurality of switching elements provided on the insulating substrate, a plurality of switching elements provided on the insulating substrate, and connected to the switching elements.
- the reflective layer may be disposed independently between the adjacent terminals.
- the reflective layer may be formed across the terminals in the width direction of the terminals.
- the reflection layer is preferably composed of a metal layer.
- An external circuit may be connected to the plurality of terminals.
- the display medium layer may be a liquid crystal layer.
- a plurality of switching elements and a plurality of wirings are formed on an insulating substrate.
- the plurality of terminals are formed on the insulating substrate so as to be arranged at predetermined intervals in a state where the terminals are drawn from the respective wirings.
- a reflective layer that reflects light to a region that is at least part of the region between adjacent terminals and includes the edge of the interlayer insulating film Form.
- the reflective layer can be composed of, for example, a metal layer.
- the reflective layer can be easily formed as a thin film, and can be accurately formed into a fine shape by photolithography.
- an interlayer insulating film that covers each of the switching elements and wirings is formed on the insulating substrate. At this time, the interlayer insulating film is formed so that at least a part of each terminal is exposed from the interlayer insulating film.
- the pixel electrode can be formed on the interlayer insulating film by photolithography.
- the pixel electrode material that covers the interlayer insulating film is uniformly formed on the insulating substrate.
- the resist formed so as to cover the pixel electrode material is exposed through a photomask.
- a resist mask opened in the region where the pixel electrode is not formed is formed.
- the pixel electrode material exposed from the mask is removed by etching or the like to form a pixel electrode having a predetermined shape on the interlayer insulating film.
- the reflective light provided in the region reflects the exposure light transmitted through the resist to sufficiently expose the thick resist. can do.
- the reflective layer can be finely formed, for example, to a width of about several ⁇ m by, for example, photolithography, the reflective layer is accurately formed between the terminals even when the terminal interval is relatively narrow. It becomes possible. Furthermore, since the reflective layer can be formed into a thin film with a thickness of, for example, about 0.1 to 0.5 ⁇ m, even when an external circuit is mounted, the external circuit can be easily formed without interfering with the reflective layer. It will be connected to the terminal.
- the reflective layer is formed in a region that is at least part of the region between adjacent terminals and includes the edge of the interlayer insulating film as viewed from the normal direction of the surface of the insulating substrate. Since it is provided, the reflective layer can prevent the generation of resist residue in the region near the edge of the interlayer insulating film, and can prevent the generation of residue of the pixel electrode material. As a result, a short circuit between the terminals can be suppressed and connection to the terminals of the external circuit can be facilitated.
- FIG. 1 is an enlarged plan view showing a part of the TFT substrate according to the first embodiment.
- FIG. 2 is a cross-sectional view including a cross section taken along line II-II in FIG. 3 is a cross-sectional view including a cross section taken along line III-III in FIG.
- FIG. 4 is a cross-sectional view showing the resist to be exposed.
- FIG. 5 is a cross-sectional view illustrating a schematic structure of the liquid crystal display device according to the first embodiment.
- FIG. 6 is a circuit diagram showing a circuit configuration of the TFT substrate according to the first embodiment.
- FIG. 7 is a plan view showing the pixel electrode material divided on the reflective layer.
- FIG. 8 is an enlarged plan view showing a part of the TFT substrate of the second embodiment.
- FIG. 9 is a cross-sectional view including a cross section taken along the line IX-IX in FIG.
- FIG. 10 is an enlarged plan view showing a part of the TFT substrate of the third embodiment.
- FIG. 11 is a cross-sectional view including a cross section taken along line XI-XI in FIG. 12 is a cross-sectional view including a cross section taken along line XII-XII in FIG.
- FIG. 13 is an enlarged plan view showing a part of the TFT substrate of the fourth embodiment.
- FIG. 14 is an enlarged plan view showing a part of the TFT substrate of the fifth embodiment.
- FIG. 15 is an enlarged plan view showing a part of the TFT substrate of the sixth embodiment.
- FIG. 16 is an enlarged plan view showing a part of the TFT substrate of the seventh embodiment.
- FIG. 17 is an enlarged plan view showing a part of the TFT substrate according to the eighth embodiment.
- FIG. 18 is an enlarged plan view showing a part of a conventional active matrix substrate.
- Embodiment 1 of the Invention 1 to 7 show Embodiment 1 of the present invention.
- FIG. 1 is an enlarged plan view showing a part of the TFT substrate of the first embodiment.
- FIG. 2 is a cross-sectional view including a cross section taken along line II-II in FIG. 3 is a cross-sectional view including a cross section taken along line III-III in FIG.
- FIG. 4 is a cross-sectional view showing the resist to be exposed.
- FIG. 5 is a cross-sectional view illustrating a schematic structure of the liquid crystal display device according to the first embodiment.
- FIG. 6 is a circuit diagram showing a circuit configuration of the TFT substrate according to the first embodiment.
- FIG. 7 is a plan view showing the pixel electrode material divided on the reflective layer.
- liquid crystal display device will be described as an example of the display device according to the present invention.
- the liquid crystal display device 1 is provided between a TFT substrate 11 as an active matrix substrate, a counter substrate 12 disposed to face the TFT substrate 11, and the TFT substrate 11 and the counter substrate 12. And a liquid crystal layer 13 which is a display medium layer.
- the counter substrate 12 is formed with a color filter, a common electrode, a black matrix, etc. (not shown).
- the liquid crystal layer 13 is sealed by a frame-shaped sealing member 23 provided between the TFT substrate 11 and the counter substrate 12.
- the TFT substrate 11 includes a glass substrate 10 that is an insulating substrate as shown in FIGS. 2 and 3, and has a plurality of pixels 16 arranged in a matrix as shown in FIG. .
- a TFT (Thin-Film Transistor) 19 as a switching element is formed for each pixel 16.
- a plurality of gate wirings 17 and a plurality of source wirings 18 connected to the TFT 19 are formed on the glass substrate 10.
- the plurality of gate wirings 17 extend in parallel to each other. Further, on the glass substrate 10, a capacitor wiring 20 is formed which is disposed between the gate wirings 17 and extends in parallel with the gate wirings 17 when viewed from the normal direction of the substrate surface. The gate wiring 17 and the capacitor wiring 20 are covered with a gate insulating film 14.
- the plurality of source lines 18 are formed on the gate insulating film 14 and extend in parallel to each other and intersect the gate lines 17. That is, the wiring group including the gate wiring 17 and the source wiring 18 is formed in a lattice shape as a whole. The pixel 16 is formed in the lattice area. The TFT 19 is connected to the gate wiring 17 and the source wiring 18.
- a protective film 26 and an interlayer insulating film 25 are formed on the glass substrate 10 so as to cover the gate wiring 17, the source wiring 18, the capacitor wiring 20, and the TFT 19.
- the protective film 26 is made of, for example, an inorganic film, and an interlayer insulating film 25 made of, for example, an organic film is formed on the surface thereof with a relatively large thickness (for example, a thickness of about 1 to 4 ⁇ m).
- the protective film 26 is not necessarily an essential configuration.
- a plurality of pixel electrodes 15 for applying a voltage to the liquid crystal layer 13 and driving it are formed on the interlayer insulating film 25.
- the pixel electrode 15 is provided for each pixel 16 and is connected to the TFT 19 through a contact hole (not shown) formed in the interlayer insulating film 25.
- the pixel electrode 15 is made of, for example, ITO (Indium Tin Oxide) or IZO (indium zinc oxide) as a transparent conductive film. Further, the pixel electrode 15 overlaps a part of the wiring (gate wiring 17 and source wiring 18) arranged around the pixel electrode 15 when viewed from the normal direction of the substrate surface.
- a capacitor element 21 also called an auxiliary capacitor is formed.
- the capacitive element 21 is provided in each pixel 16, and the display voltage in each pixel 16 is maintained substantially constant.
- the TFT substrate 11 is formed with a display area 51 provided with the plurality of pixels 16 and a non-display area 52 provided around the display area 51.
- a plurality of gate terminals 17a drawn from the gate wiring 17 and arranged at a predetermined interval, and drawn from the source wiring 18 and arranged at a predetermined interval.
- a plurality of source terminals 18a are formed.
- the terminals 17a and 18a may be formed of the same material as the gate wiring 17 or the same material as the source wiring 18 respectively.
- An output terminal (not shown) of a source driver as an external circuit is connected to the source terminal 18a via an ACF (Anisotropic Conductive Film), while an external circuit is connected to the gate terminal 17a.
- an output terminal (not shown) of the gate driver is connected via the ACF.
- the gate terminal 17 a and the source terminal 18 a are provided in a state where at least a part thereof is exposed from the interlayer insulating film 25. That is, as shown in FIGS. 1 to 3, the end of the interlayer insulating film 25 is formed so as to cross the plurality of gate terminals 17a and source terminals 18a when viewed from the normal direction of the surface of the glass substrate 10. . Further, since the interlayer insulating film 25 has a relatively large thickness, it forms a step on the glass substrate 10.
- the gate terminal 17 a includes a first pad 31 formed on the glass substrate 10 and a second pad 32 partially laminated on the surface of the first pad 31. ing.
- the first pad 31 is made of the same material as the gate wiring 17. For example, a metal layer in which Ti, Al, and TiN are stacked in this order, and an alloy containing Cr or Mo and Al or Al are stacked in this order. Or a single metal layer made of Al or an alloy containing Al.
- the second pad 32 is made of ITO, which is the same material as the pixel electrode 15, and extends along the first pad 31.
- the gate insulating film 14 is formed on the glass substrate 10 so as to cover the first pad 31.
- a slit-like contact portion 33 extending along the first pad 31 is formed in the gate insulating film 14 so as to penetrate therethrough.
- the second pad 32 provided on the gate insulating film 14 is connected to the first pad 31 through the contact portion 33.
- a first semiconductor layer 28 is stacked in a region including the edge of the interlayer insulating film 25.
- a part of the protective film 26 is stacked on the gate insulating film 14.
- the side surfaces of the protective film 26 and the interlayer insulating film 25 constitute one continuous side surface as a whole.
- the end of the second pad 32 runs over the first pad 31 at the end opposite to the side where the protective film 26 is provided. Has been.
- a gap of about several ⁇ m to several tens of ⁇ m is provided between the second pad 32 and the edge of the interlayer insulating film 25.
- FIGS. 1 and 2 when viewed from the normal direction of the surface of the glass substrate 10, it is at least a partial region between adjacent gate terminals 17a and an interlayer. In the region including the edge of the insulating film 25, a reflective layer 40 that reflects light to the side opposite to the glass substrate 10 is provided.
- the reflective layer 40 is made of the same material as that of the source wiring 18, and is disposed separately and independently between the adjacent gate terminals 17a. That is, the reflective layer 40 is disposed so as not to overlap the gate terminal 17a.
- the reflective layer 40 disposed between the gate terminals 17a will be described.
- a gate insulating film 14 is formed in a region between the gate terminals 17 a on the glass substrate 10, and a part thereof overlaps the interlayer insulating film 25.
- the reflective layer 40 includes a first metal layer 41 laminated on the surface of the gate insulating film 14 and a second metal layer 42 laminated on a part of the surface of the first metal layer 41.
- the first metal layer 41 is made of, for example, a Ti layer
- the second metal layer 42 is made of, for example, an Al layer.
- the second metal layer 42 is disposed in a region overlapping the interlayer insulating film 25 on the surface of the first metal layer 41.
- a part of the protective film 26 rides on the surface of the second metal layer 42 from the glass substrate 10 and is laminated.
- the side surfaces of the second metal layer 42, the protective film 26, and the interlayer insulating film 25 constitute one continuous side surface as a whole.
- the second metal layer 42 is not necessarily an essential configuration, and only the first metal layer 41 may be provided.
- the first metal layer 41 may be a metal layer in which Cr or Mo and an alloy containing Al or Al are laminated in this order, or a single metal layer made of an alloy containing Al or Al. Further, from the viewpoint of further improving the reflection effect of the reflective layer 40, it is preferable to provide an Al layer having a high reflectance as the uppermost layer.
- the reflective layer 40 is disposed in a layer different from the first pad 31.
- the liquid crystal display device 1 is manufactured by pasting together a previously formed TFT substrate 11 and counter substrate 12 via a liquid crystal layer 13 and a seal member 23.
- a plurality of TFTs 19 and a plurality of wirings 17, 18, and 20 are formed on the glass substrate 10 by photolithography. That is, the gate wiring 17 and the first pad 31 of the gate terminal 17a are formed on the surface of the glass substrate 10 at predetermined intervals.
- the gate wiring 17 and the first pad 31 are formed by stacking, for example, Ti, Al, and TiN layers in this order.
- the gate insulating film 14 is formed on the glass substrate 10 so as to cover the gate wiring 17 and a part of the first pad 31. Thereafter, as shown in FIG. 3, the first semiconductor layer 28 is formed on the surface of the end portion of the gate insulating film 14 covering the first pad 31 by photolithography and etching.
- the reflective layer 40 is simultaneously formed on the surface of the gate insulating film 14 provided between the adjacent first pads 31 in the same process as the source wiring 18.
- the first metal layer 41 of the reflective layer 40 is formed in an island shape by, for example, photolithography and etching a Ti layer.
- an Al layer constituting the second metal layer 42 is formed on the surface of the first metal layer 41.
- an inorganic film constituting the protective film 26 and an organic film constituting the interlayer insulating film 25 are deposited so as to cover the Al layer and the first semiconductor layer 28.
- the Al layer, the inorganic film, and the organic film are patterned by photolithography and etching.
- the second metal layer 42, the protective film 26, and the interlayer insulating film 25 are formed.
- an edge that crosses each gate terminal 17 a is formed in the interlayer insulating film 25, and the first pad 31, a part of the first metal layer 41, and the first semiconductor layer 28.
- a part of the layer is exposed from the interlayer insulating film 25.
- the reflective layer 40 is formed in a region between the adjacent first pads 31 (gate terminals 17 a) and including the edge of the interlayer insulating film 25.
- the pixel electrode 15 is formed by photolithography and etching.
- a pixel electrode material 35 made of ITO or the like is uniformly formed on the glass substrate 10 so as to cover the interlayer insulating film 25.
- the resist 36 formed so as to cover the pixel electrode material 35 is exposed through a photomask (not shown).
- a mask of a resist 36 opened in an area where the pixel electrode 15 and the second pad 32 are not formed is formed.
- the pixel electrode material 35 exposed from the mask of the resist 36 is removed by etching, whereby the pixel electrode 15 having a predetermined shape is formed on the surface of the interlayer insulating film 25, and the second pad 32 is formed on the first pad 32. It is formed on the surface of the pad 31.
- the exposure light transmitted through the resist 36 is reflected to the side opposite to the glass substrate 10 by the reflective layer 40, and therefore the resist 36 on the reflective layer 40 is reflected. However, it is sufficiently exposed as compared with other portions.
- an alignment film (not shown) that covers the pixel electrode 15 and the interlayer insulating film 25 is formed to manufacture the TFT substrate 11.
- the reflective layer 40 is formed in a region between the adjacent terminals 17a and including the edge of the interlayer insulating film 25 when viewed from the normal direction of the surface of the glass substrate 10. Since the reflection layer 40 reflects the exposure light transmitted through the resist 36 in the region near the edge of the interlayer insulating film 25 to the opposite side of the glass substrate 10, the reflection layer 40 is provided. The resist 36 in the existing region can be sufficiently exposed. Therefore, it is possible to prevent the residue of the resist 36 from being generated in the region where the reflective layer 40 is provided.
- the reflective layer 40 is provided. In this region, it is possible to remove the resist 36 reliably and prevent the residue of the pixel electrode 35 from being generated. Therefore, since the pixel electrode material 35 generated between the terminals 17a is divided on the reflective layer 40, a short circuit between adjacent terminals 17a is suppressed in a region near the edge of the interlayer insulating film 25. Can do.
- the reflection layer 40 can be easily formed thin, thereby preventing interference between the reflection layer 40 and an external circuit. Thus, connection to each terminal 17a of the external circuit can be facilitated.
- the reflection layer 40 can be composed of a metal layer or the like, it can be accurately formed into a fine shape by photolithography or the like even when the interval between the adjacent terminals 17a is relatively narrow. That is, it is possible to suitably suppress a short circuit between the terminals 17a for the small-sized liquid crystal display device 1 that performs high-detail display and the TFT substrate 11 used therefor.
- the reflective layer 40 is formed in a layer different from the first pad 31, it is possible to reliably prevent a short circuit between the reflective layer 40 and the first pad 31.
- the short circuit between the terminals 17a can be suppressed and the connection to the terminal 17a of the external circuit can be facilitated.
- the same effect can be obtained not only by the first semiconductor layer 28 but also by arranging another high resistance film.
- the reflective layer 40 is provided on the gate insulating film 14, the step shape in the vicinity of the end of the interlayer insulating film 25 is relatively gentle, and the resist 36 is exposed more efficiently by the reflective layer 40. It becomes possible to do.
- the 2nd pad 32 is not an essential structure, corrosion of the 1st pad 31 can be suppressed by providing this.
- Embodiment 2 of the Invention >> 8 and 9 show Embodiment 2 of the present invention.
- FIG. 8 is an enlarged plan view showing a part of the TFT substrate of the second embodiment.
- 9 is a cross-sectional view including a cross section taken along the line IX-IX in FIG.
- the same portions as those in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
- the reflective layer 40 is provided only between the adjacent terminals 17a. In the second embodiment, the reflective layer 40 is also disposed on the terminal 17a.
- the reflective layer 40 in the second embodiment is intermittently disposed along the edge of the interlayer insulating film 25 as in the first embodiment, and each terminal 17a is connected to each other. It is formed across the width direction of the terminal 17a.
- the spacing between adjacent reflective layers 40 is preferably 3 ⁇ m or more, for example. As a result, it is possible to secure a margin for deviation when an external circuit such as an FPC is connected.
- the first pads 31 are formed at predetermined intervals on the surface of the glass substrate 10, and the gate insulating film 14 is formed so as to cover a part of the first pads 31. Yes.
- a slit-like contact portion 33 extending along the first pad 31 is formed in the gate insulating film 14 so as to penetrate therethrough.
- the second pad 32 provided on the gate insulating film 14 is connected to the first pad 31 through the contact portion 33.
- a first semiconductor layer 28 is formed on the gate insulating film 14. A part of the first semiconductor layer 28 overlaps the interlayer insulating film 25.
- the second semiconductor layer 29 and the first metal layer 41 are stacked on the surface of the first semiconductor layer 28, and each part of the second semiconductor layer 29 and the first metal layer 41 overlaps the interlayer insulating film 25. Further, a second metal layer 42 is laminated in a region overlapping the interlayer insulating film 25 on the surface of the first metal layer 41.
- each side surface of the second metal layer 42, the protective film 26, and the interlayer insulating film 25 constitutes one continuous side surface as a whole.
- the surface of the second semiconductor layer 29 is formed of, for example, a Ti layer.
- a first metal layer 41 is formed.
- a second metal layer 42 made of an Al layer is formed on a part of the surface of the first metal layer 41.
- the second metal layer 42 is formed by photolithography and etching together with the protective film 26 and the interlayer insulating film 25.
- the pixel electrode material 35 such as ITO and the resist 36 are uniformly deposited, and the resist 36 is exposed.
- the resist 36 on the reflective layer 40 is sufficiently larger than other portions. Exposed.
- the pixel electrode 15 is formed on the interlayer insulating film 25 and the second pad 32 is formed on the first pad 31 to manufacture the TFT substrate 11.
- Embodiment 3 of the Invention >> 10 to 12 show Embodiment 3 of the present invention.
- FIG. 10 is an enlarged plan view showing a part of the TFT substrate of the third embodiment.
- FIG. 11 is a cross-sectional view including a cross section taken along line XI-XI in FIG. 12 is a cross-sectional view including a cross section taken along line XII-XII in FIG.
- the reflective layer 40 made of the same material as the source wiring 18 is formed between the adjacent gate terminals 17a.
- a reflection layer 40 made of the same material as that of the gate wiring 17 is formed between the adjacent gate terminals 17a.
- the gate terminal 17a has the same configuration as that of the first embodiment. As shown in FIGS. 10 and 12, the first pad 31 formed on the glass substrate 10 and a part of the surface of the first pad 31 are formed. And the second pad 32 laminated on the substrate. The first pad 31 is made of the same material as the gate wiring 17, while the second pad 62 is made of ITO, which is the same material as the pixel electrode 15. The second pad 32 is connected to the first pad 31 through a contact portion 33 formed in the gate insulating film 14.
- a first semiconductor layer 28 is stacked in a region including the edge of the interlayer insulating film 25.
- the first semiconductor layer 28 is formed with a thickness of 0.2 ⁇ m or less, for example.
- an interlayer insulating film 25 made of, for example, an organic film is formed with a relatively large thickness (for example, a thickness of about 1 to 4 ⁇ m).
- the end of the second pad 62 rides on the first pad 61 at the end opposite to the side where the protective film 26 is provided. Has been.
- a gap of about several ⁇ m to several tens of ⁇ m is provided between the second pad 62 and the edge of the interlayer insulating film 25.
- the reflective layer 40 that reflects light is provided in each of the regions including.
- the reflective layer 40 in the third embodiment is made of the same material as that of the gate wiring 17 and is formed on the surface of the glass substrate 10 and covered with the gate insulating film 14 as shown in FIG. Thus, the reflective layer 40 is disposed so as not to overlap the gate terminal 17a, and is provided separately between the adjacent gate terminals 17a.
- a gate wiring 17 a metal layer made of, for example, each of Ti, Al, and TiN formed on the glass substrate 10 is subjected to photolithography and etching.
- the first pad 31 and the reflective layer 40 are formed simultaneously in the same process.
- the metal layer is not limited to a laminated film of Ti, Al, and TiN. It may be a metal layer in which Cr or Mo and an alloy containing Al or Al are laminated in this order, or a single-layer metal layer made of an alloy containing Al or Al. Further, from the viewpoint of further improving the reflection effect of the reflective layer 40, it is preferable to provide an Al layer having a high reflectance as the uppermost layer.
- the first semiconductor layer 28 and the contact portion 33 are formed in the gate insulating film 14. Thereafter, as in the first embodiment, the protective film 26 and the interlayer insulating film 25 are formed on the gate insulating film 14.
- the pixel electrode 15 is formed by photolithography and etching. That is, as in the first embodiment, a pixel electrode material 35 made of ITO or the like is deposited on the entire glass substrate 10 so as to cover the interlayer insulating film 25, and a resist is formed so as to cover the entire pixel electrode material 35. 36 is formed (see FIG. 4). Then, the resist 36 is exposed through a photomask (not shown) and developed to form a resist 36 mask.
- the pixel electrode material 35 exposed from the mask of the resist 36 is removed by etching, whereby the pixel electrode 15 having a predetermined shape is formed on the surface of the interlayer insulating film 25 and the second pad 32 is formed on the first pad 31. Form on the surface.
- the exposure light transmitted through the resist 36, the first semiconductor layer 28, and the gate insulating film 14 is reflected by the reflective layer 40.
- the resist 36 on 40 is sufficiently exposed as compared with other portions. In this way, the TFT substrate 11 is manufactured.
- the reflective layer 40 is formed in a region between the adjacent gate terminals 17a and including the edge of the interlayer insulating film 25 when viewed from the normal direction of the surface of the glass substrate 10. Since the resist 36 in the region near the edge of the interlayer insulating film 25 provided with the reflective layer 40 can be sufficiently exposed by the light reflected by the reflective layer 40, the above-described Embodiment 1 and Similar effects can be obtained.
- the entire reflective layer 40 is covered with the gate insulating film 14, even if another member such as an external circuit comes into contact, an electrical short circuit through the reflective layer 40 can be prevented. it can.
- FIG. 13 shows Embodiment 4 of the present invention.
- FIG. 13 is an enlarged plan view showing a part of the TFT substrate of the fourth embodiment.
- a cross-sectional view taken along the line XI-XI in FIG. 13 corresponds to FIG.
- a cross-sectional view taken along line XII-XII in FIG. 13 corresponds to FIG.
- the reflective layer 40 is formed in an island shape between the adjacent gate terminals 17a. In the fourth embodiment, the reflective layer 40 is formed integrally with the gate terminal 17a. It is.
- the reflective layer 40 is formed integrally with the first pad 31, and the gate terminal 17a extends along the edge in a region including the edge of the interlayer insulating film 25. It protrudes on both sides in the width direction. In addition, a gap is provided between adjacent reflective layers 40.
- FIG. 14 shows a fifth embodiment of the present invention.
- FIG. 14 is an enlarged plan view showing a part of the TFT substrate of the fifth embodiment. Note that the cross-sectional view taken along the line XI-XI in FIG. 14 corresponds to FIG. A cross-sectional view taken along line XII-XII in FIG. 14 corresponds to FIG.
- the reflective layer 40 is formed so as to protrude on both sides in the width direction of the gate terminal 17a, whereas in the fifth embodiment, the reflective layer 40 is formed so as to protrude on one side in the width direction of the gate terminal 17a. It is.
- the entire reflection layer 40 is disposed between the adjacent gate terminals 17a so as to be covered with the gate insulating film 14, and thus the same effect as in the third embodiment. Can be obtained.
- FIG. 15 shows Embodiment 6 of the present invention.
- FIG. 15 is an enlarged plan view showing a part of the TFT substrate of the sixth embodiment.
- the reflective layer 40 made of the same material as that of the source wiring 18 is formed between the adjacent gate terminals 17a, whereas in the sixth embodiment, the reflective layer made of the same material as that of the gate wiring 17 is used. 40 is formed between adjacent source terminals 18a.
- the source terminal 18a has a first pad 61 formed on the glass substrate 10 and a second pad 62 partially laminated on the surface of the first pad 61, like the gate terminal 17a. It is comprised by.
- the first pad 61 is made of the same material as that of the source wiring 18, and is made of a metal layer such as Al.
- the second pad 62 is made of ITO or the like, which is the same material as the pixel electrode 15, and extends along the first pad 61.
- a gate insulating film (not shown) is formed on the glass substrate 10 so as to cover the first pad 61. As shown in FIG. 15, a slit-like contact portion 63 extending along the first pad 61 is formed in the gate insulating film so as to penetrate therethrough. Thus, the second pad 62 provided on the gate insulating film 14 is connected to the first pad 61 via the contact portion 63.
- a first semiconductor layer (not shown) is stacked on the gate insulating film 14 in a region including the edge of the interlayer insulating film 25.
- a part of a protective film (not shown) is stacked on the gate insulating film.
- the end of the second pad 62 rides over the first pad 61 at the end opposite to the side on which the protective film 26 is provided. .
- the reflective layer 40 is made of the same material as the gate wiring 17 and is formed on the surface of the glass substrate 10 as in the third embodiment. Further, the reflective layer 40 is covered with a gate insulating film. Thus, the reflective layer 40 is disposed so as not to overlap the source terminal 18a, and is provided separately between the adjacent source terminals 18a.
- the gate wiring 17 and the reflective layer 40 are simultaneously formed in the same process as in the third embodiment.
- a first semiconductor layer and a contact portion 63 are formed in the gate insulating film.
- a protective film and an interlayer insulating film 25 are formed on the gate insulating film.
- the pixel electrode 15 is formed by photolithography and etching. That is, the pixel electrode material 35 and the resist 36 are deposited in this order on the entire glass substrate 10, and the resist 36 is exposed and developed to form a photomask.
- the exposure light transmitted through the resist 36 and the like is reflected by the reflective layer 40, so that the resist 36 on the reflective layer 40 is compared with other portions. Fully exposed.
- the reflective layer 40 is formed in a region between the adjacent source terminals 18 a and including the edge of the interlayer insulating film 25 as viewed from the normal direction of the surface of the glass substrate 10. Since the resist 36 in the region near the edge of the interlayer insulating film 25 provided with the reflective layer 40 can be sufficiently exposed by the light reflected by the reflective layer 40, the above-described Embodiment 1 and Similar effects can be obtained.
- the entire reflective layer 40 is covered with the gate insulating film, even if another member such as an external circuit comes into contact, an electrical short circuit through the reflective layer 40 can be prevented. .
- FIG. 16 shows a seventh embodiment of the present invention.
- FIG. 16 is an enlarged plan view showing a part of the TFT substrate of the seventh embodiment.
- the reflective layer 40 is formed in an island shape between adjacent source terminals 18a.
- the first pad 61 straddles the reflective layer 40 formed in an island shape. It is formed as follows.
- a plurality of reflective layers 40 are arranged along the edge of the interlayer insulating film 25 at a predetermined interval.
- Each reflective layer 40 is disposed so as to intersect with the first pad 61 of the source terminal 18a.
- the reflective layer 40 protrudes on both sides in the width direction of the source terminal 18 a when viewed from the normal direction of the glass substrate 10.
- the reflective layer 40 is formed in a region between the adjacent source terminals 18 a and including the edge of the interlayer insulating film 25 when viewed from the normal direction of the surface of the glass substrate 10. Since the resist 36 in the region near the edge of the interlayer insulating film 25 can be sufficiently exposed by the light reflected by the reflective layer 40, the same effect as in the first embodiment can be obtained.
- the entire reflective layer 40 is covered with the gate insulating film, even if another member such as an external circuit comes into contact, an electrical short circuit through the reflective layer 40 can be prevented. .
- FIG. 17 shows an eighth embodiment of the present invention.
- FIG. 17 is an enlarged plan view showing a part of the TFT substrate according to the eighth embodiment.
- the reflective layer 40 is arranged so as to intersect with the source terminal 18a so as to protrude on both sides in the width direction of the source terminal 18a, whereas in the eighth embodiment, the reflective layer 40 is provided with the source terminal 18a. It arrange
- the plurality of reflective layers 40 are arranged along the edge of the interlayer insulating film 25 at a predetermined interval.
- Each reflective layer 40 partially overlaps the first pad 61, and the other remaining region protrudes from the first pad 61 on one side in the edge direction of the interlayer insulating film 25. .
- a predetermined gap is provided between the end of the protruding reflective layer 40 and the adjacent source terminal 18a.
- the terminal to which the external circuit is connected has been described.
- the present invention is not limited to this, and the present invention is similarly applied to other terminals such as a terminal for inputting an inspection signal. can do.
- the external circuit is not limited to a signal input circuit, and may be a circuit for reading a signal. That is, the present invention can also be applied to other circuits such as an X-ray sensor and a touch panel.
- the terminal in the present invention is not limited to a gate terminal or a source terminal, but a power signal is input to a terminal for inputting a counter signal to the common electrode of the counter substrate 12 or a drive circuit monolithically formed on the active matrix substrate. It may be a terminal or the like.
- the present invention is not limited thereto, and a reflective layer may be provided between at least one terminal. .
- the reflective layer 40 formed of the same material as that of the gate wiring 17 is disposed between the adjacent source terminals 18a.
- the reflective layer 40 formed of a material may be disposed between the adjacent source terminals 18a. Even if it does in this way, the effect similar to the said Embodiment 1 can be acquired.
- the entire reflective layer 40 is covered with the gate insulating film 14, but the present invention is not limited to this, and the entire reflective layer 40 is covered with another insulating film. Also good.
- the liquid crystal display device 1 has been described as an example.
- the present invention is not limited to this, and other display devices such as an organic EL display device in which the display medium layer is a light emitting layer are also used. Can be applied.
- the present invention is useful for an active matrix substrate and a display device including the active matrix substrate.
- Liquid crystal display device 10 Glass substrate (insulating substrate) 11 TFT substrate (active matrix substrate) 12 Counter substrate 13 Liquid crystal layer (display medium layer) 14 Gate insulating film (insulating film) 15 pixel electrode 17 gate wiring 17a gate terminal 18 source wiring 18a source terminal 19 TFT (switching element) 25 Interlayer insulating film 28 First semiconductor layer 29 Second semiconductor layer 31 First pad (terminal) 32 Second pad (terminal) 35 Pixel electrode material 36 Resist 40 Reflective layer 41 First metal layer (reflective layer) 42 Second metal layer (reflection layer)
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Abstract
Description
次に、本発明の作用について説明する。
図1~図7は、本発明の実施形態1を示している。
次に、上記TFT基板11を有する液晶表示装置1の製造方法について説明する。
したがって、本実施形態1によると、ガラス基板10の表面の法線方向から見て、隣り合う端子17a同士の間の領域であり且つ層間絶縁膜25の端縁を含む領域に、反射層40を設けるようにしたので、その反射層40によって、層間絶縁膜25の端縁近傍領域においてレジスト36を透過した露光の光をガラス基板10と反対側に反射して、当該反射層40が設けられている領域のレジスト36を十分に露光できる。そのため、この反射層40が設けられている領域において、レジスト36の残渣の発生を防止することができる。
図8及び図9は、本発明の実施形態2を示している。
したがって、本実施形態2によっても、反射層40の一部が隣り合う各端子17a間に配置されているため、上記実施形態1と同様に、反射層40が設けられた層間絶縁膜25の端縁近傍領域において、レジスト36の残渣及び画素電極材料35の残渣の発生を防止できるため、隣り合う各端子17a間の短絡を抑制することができる。そのことに加え、反射層40を容易に薄く形成できるため、外部回路の各端子17aへの接続を容易にすることができる。
図10~図12は、本発明の実施形態3を示している。
したがって、本実施形態3によっても、ガラス基板10の表面の法線方向から見て、隣り合うゲート端子17a同士の間の領域であり且つ層間絶縁膜25の端縁を含む領域に、反射層40を配置するようにしたので、反射層40で反射した光によって、当該反射層40が設けられている層間絶縁膜25の端縁近傍領域におけるレジスト36を十分に露光できるため、上記実施形態1と同様の効果を得ることができる。
図13は、本発明の実施形態4を示している。
したがって、本実施形態4においても、隣り合うゲート端子17a同士の間に、反射層40の全体をゲート絶縁膜14に覆われた状態で配置するようにしたので、上記実施形態3と同様の効果を得ることができる。
図14は、本発明の実施形態5を示している。
したがって、本実施形態5においても、隣り合うゲート端子17a同士の間に、反射層40の全体をゲート絶縁膜14に覆われた状態で配置するようにしたので、上記実施形態3と同様の効果を得ることができる。
図15は、本発明の実施形態6を示している。
したがって、本実施形態6によっても、ガラス基板10の表面の法線方向から見て、隣り合うソース端子18a同士の間の領域であり且つ層間絶縁膜25の端縁を含む領域に、反射層40を配置するようにしたので、反射層40で反射した光によって、当該反射層40が設けられている層間絶縁膜25の端縁近傍領域におけるレジスト36を十分に露光できるため、上記実施形態1と同様の効果を得ることができる。
図16は、本発明の実施形態7を示している。
したがって、本実施形態7においても、ガラス基板10の表面の法線方向から見て、隣り合うソース端子18a同士の間の領域であり且つ層間絶縁膜25の端縁を含む領域に、反射層40を配置するようにしたので、反射層40で反射した光によって層間絶縁膜25の端縁近傍領域におけるレジスト36を十分に露光できるため、上記実施形態1と同様の効果を得ることができる。
図17は、本発明の実施形態8を示している。
したがって、本実施形態8においても、隣り合うソース端子18a同士の間に、反射層40の全体をゲート絶縁膜14に覆われた状態で配置するようにしたので、上記実施形態7と同様の効果を得ることができる。
上記各実施形態では、複数のTFTが形成されたTFT基板11を例に挙げて説明したが、本発明はこれに限らず、例えばTFD等の他のスイッチング素子が複数形成されたアクティブマトリクス基板としてもよい。
10 ガラス基板(絶縁性基板)
11 TFT基板(アクティブマトリクス基板)
12 対向基板
13 液晶層(表示媒体層)
14 ゲート絶縁膜(絶縁膜)
15 画素電極
17 ゲート配線
17a ゲート端子
18 ソース配線
18a ソース端子
19 TFT(スイッチング素子)
25 層間絶縁膜
28 第1半導体層
29 第2半導体層
31 第1パッド(端子)
32 第2パッド(端子)
35 画素電極材料
36 レジスト
40 反射層
41 第1メタル層(反射層)
42 第2メタル層(反射層)
Claims (13)
- 絶縁性基板と、
上記絶縁性基板上に設けられた複数のスイッチング素子と、
上記絶縁性基板上に複数設けられ、上記スイッチング素子に接続された配線と、
複数の上記スイッチング素子及び複数の上記配線を覆う層間絶縁膜と、
上記層間絶縁膜上に形成された複数の画素電極と、
複数の上記配線から引き出されて所定の間隔で配置された複数の端子とを備えたアクティブマトリクス基板であって、
複数の上記端子の少なくとも一部は、上記層間絶縁膜から露出した状態で設けられ、
上記絶縁性基板の表面の法線方向から見て、隣り合う上記端子同士の間の少なくとも一部の領域であり、且つ、上記層間絶縁膜の端縁を含む領域には、光を上記絶縁性基板と反対側に反射する反射層が設けられている
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、
上記反射層は、隣り合う上記端子同士の間に別個独立に配置されている
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、
上記反射層は、上記各端子を該端子の幅方向に跨いで形成されている
ことを特徴とするアクティブマトリクス基板。 - 請求項1乃至3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、
上記反射層は、金属層によって構成されている
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、
上記複数の端子には、外部回路が接続される
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5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、
上記反射層の全体が絶縁膜によって覆われている
ことを特徴とするアクティブマトリクス基板。 - アクティブマトリクス基板と、
上記アクティブマトリクス基板に対向して配置された対向基板と、
上記アクティブマトリクス基板と対向基板との間に設けられた表示媒体層とを備えた表示装置であって、
上記アクティブマトリクス基板は、絶縁性基板と、上記絶縁性基板上に設けられた複数のスイッチング素子と、上記絶縁性基板上に複数設けられ、上記スイッチング素子に接続された配線と、複数の上記スイッチング素子及び複数の上記配線を覆う層間絶縁膜と、上記層間絶縁膜上に形成された複数の画素電極と、複数の上記配線から引き出されて所定の間隔で配置された複数の端子とを備え、
複数の上記端子の少なくとも一部は、上記層間絶縁膜から露出した状態で設けられ、
上記絶縁性基板の表面の法線方向から見て、隣り合う上記端子同士の間の少なくとも一部の領域であり、且つ、上記層間絶縁膜の端縁を含む領域には、光を上記絶縁性基板と反対側に反射する反射層が設けられている
ことを特徴とする表示装置。 - 請求項7に記載された表示装置において、
上記反射層は、隣り合う上記端子同士の間に別個独立に配置されている
ことを特徴とする表示装置。 - 請求項7に記載された表示装置において、
上記反射層は、上記各端子を該端子の幅方向に跨いで形成されている
ことを特徴とする表示装置。 - 請求項7乃至9の何れか1つに記載された表示装置において、
上記反射層は、金属層によって構成されている
ことを特徴とする表示装置。 - 請求項7乃至10の何れか1つに記載された表示装置において、
上記複数の端子には、外部回路が接続される
ことを特徴とする表示装置。 - 請求項7乃至11の何れか1つに記載された表示装置において、
上記反射層の全体が絶縁膜によって覆われている
ことを特徴とする表示装置。 - 請求項7乃至12の何れか1つに記載された表示装置において、
上記表示媒体層は液晶層である
ことを特徴とする表示装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2011515842A JP5162028B2 (ja) | 2009-05-29 | 2010-02-23 | アクティブマトリクス基板及びそれを備えた表示装置 |
KR1020117018180A KR101250122B1 (ko) | 2009-05-29 | 2010-02-23 | 액티브 매트릭스 기판 및 이를 구비한 표시장치 |
BRPI1006997A BRPI1006997A2 (pt) | 2009-05-29 | 2010-02-23 | substrato de matriz e dispositivo de vídeo tendo o mesmo |
EP10780169A EP2437239A4 (en) | 2009-05-29 | 2010-02-23 | ACTIVE MATRIX SUBSTRATE AND DISPLAY DEVICE THEREFOR |
CN2010800094916A CN102334152A (zh) | 2009-05-29 | 2010-02-23 | 有源矩阵基板及具备该有源矩阵基板的显示装置 |
RU2011148901/28A RU2493576C2 (ru) | 2009-05-29 | 2010-02-23 | Подложка активной матрицы и устройство отображения, имеющее такую подложку |
US13/255,160 US8593597B2 (en) | 2009-05-29 | 2010-02-23 | Active matrix substrate and display device having the same |
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JP2009-131310 | 2009-05-29 | ||
JP2009131310 | 2009-05-29 |
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WO2010137206A1 true WO2010137206A1 (ja) | 2010-12-02 |
Family
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PCT/JP2010/001194 WO2010137206A1 (ja) | 2009-05-29 | 2010-02-23 | アクティブマトリクス基板及びそれを備えた表示装置 |
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US (1) | US8593597B2 (ja) |
EP (1) | EP2437239A4 (ja) |
JP (1) | JP5162028B2 (ja) |
KR (1) | KR101250122B1 (ja) |
CN (1) | CN102334152A (ja) |
BR (1) | BRPI1006997A2 (ja) |
RU (1) | RU2493576C2 (ja) |
WO (1) | WO2010137206A1 (ja) |
Cited By (3)
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---|---|---|---|---|
WO2017077995A1 (ja) * | 2015-11-06 | 2017-05-11 | シャープ株式会社 | 表示基板、表示装置及び表示基板の製造方法 |
WO2019239742A1 (ja) * | 2018-06-14 | 2019-12-19 | 株式会社ジャパンディスプレイ | 半導体装置 |
JP2022119776A (ja) * | 2017-10-30 | 2022-08-17 | 株式会社ジャパンディスプレイ | 半導体装置 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2437239A4 (en) * | 2009-05-29 | 2012-12-26 | Sharp Kk | ACTIVE MATRIX SUBSTRATE AND DISPLAY DEVICE THEREFOR |
US8829517B2 (en) * | 2010-07-21 | 2014-09-09 | Sharp Kabushiki Kaisha | Substrate, method for fabricating the same, and display device |
CN103246105A (zh) * | 2013-04-26 | 2013-08-14 | 京东方科技集团股份有限公司 | 一种液晶面板和液晶显示器 |
CN104536603B (zh) * | 2014-12-18 | 2018-01-09 | 深圳市华星光电技术有限公司 | 显示器及具有触控功能的面板 |
KR102652604B1 (ko) | 2016-06-08 | 2024-04-02 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
WO2020021654A1 (ja) * | 2018-07-25 | 2020-01-30 | シャープ株式会社 | 表示装置 |
CN109300913B (zh) * | 2018-09-27 | 2020-11-27 | 厦门天马微电子有限公司 | 阵列基板和显示面板 |
US20220206623A1 (en) * | 2019-04-19 | 2022-06-30 | Sharp Kabushiki Kaisha | Display device |
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- 2010-02-23 CN CN2010800094916A patent/CN102334152A/zh active Pending
- 2010-02-23 US US13/255,160 patent/US8593597B2/en not_active Expired - Fee Related
- 2010-02-23 JP JP2011515842A patent/JP5162028B2/ja not_active Expired - Fee Related
- 2010-02-23 WO PCT/JP2010/001194 patent/WO2010137206A1/ja active Application Filing
- 2010-02-23 BR BRPI1006997A patent/BRPI1006997A2/pt not_active IP Right Cessation
- 2010-02-23 KR KR1020117018180A patent/KR101250122B1/ko not_active IP Right Cessation
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WO2017077995A1 (ja) * | 2015-11-06 | 2017-05-11 | シャープ株式会社 | 表示基板、表示装置及び表示基板の製造方法 |
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JP2022119776A (ja) * | 2017-10-30 | 2022-08-17 | 株式会社ジャパンディスプレイ | 半導体装置 |
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Also Published As
Publication number | Publication date |
---|---|
JP5162028B2 (ja) | 2013-03-13 |
EP2437239A1 (en) | 2012-04-04 |
EP2437239A4 (en) | 2012-12-26 |
US8593597B2 (en) | 2013-11-26 |
KR20110112403A (ko) | 2011-10-12 |
KR101250122B1 (ko) | 2013-04-03 |
CN102334152A (zh) | 2012-01-25 |
RU2493576C2 (ru) | 2013-09-20 |
RU2011148901A (ru) | 2013-07-10 |
US20120019750A1 (en) | 2012-01-26 |
JPWO2010137206A1 (ja) | 2012-11-12 |
BRPI1006997A2 (pt) | 2016-04-19 |
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