WO2017033758A1 - 表示装置 - Google Patents
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- WO2017033758A1 WO2017033758A1 PCT/JP2016/073698 JP2016073698W WO2017033758A1 WO 2017033758 A1 WO2017033758 A1 WO 2017033758A1 JP 2016073698 W JP2016073698 W JP 2016073698W WO 2017033758 A1 WO2017033758 A1 WO 2017033758A1
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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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
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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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
- G02F1/13338—Input devices, e.g. touch panels
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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
- G02F1/13629—Multilayer wirings
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- the present invention relates to a display device.
- Patent Document 1 discloses a liquid crystal display device with a touch detection function that divides a common electrode into a plurality of parts and uses the divided plurality of common electrodes as touch electrodes.
- a plurality of divided common electrodes and a controller are connected by a plurality of signal wires in order to detect a touch position by the controller.
- a liquid crystal layer is sandwiched between a pair of substrates, and the outer periphery of the liquid crystal layer is sealed with a sealing material so that the liquid crystal material does not leak outside.
- a sealing material for example, a photo-curing resin that is cured by irradiation with light is used.
- the seal material is formed, at least a gate lead line for connecting the display control gate line and the controller and a source lead line for connecting the display control source line and the controller are arranged.
- a signal lead line for connecting a signal line for detecting a touch position and a controller is further arranged in a region where a seal material is formed. For this reason, when a photo-curing resin is used as the sealing material, the light transmission region in which the gate lead-out line, the source lead-out line, and the signal lead-out line are not arranged becomes narrow. Insufficient light may cause poor curing.
- An object of the present invention is to provide a display device capable of ensuring a wide light transmission region in a region where a sealing material is disposed.
- a display device irradiates light with an active matrix substrate, a counter substrate facing the active matrix substrate, a display function layer disposed between the active matrix substrate and the counter substrate, and light.
- a sealant that encapsulates the display function layer between the active matrix substrate and the counter substrate, and the active matrix substrate includes a first wiring formed in the first wiring layer, A second wiring formed in a second wiring layer different from the first wiring layer, and a third wiring layer different from the first wiring layer and the second wiring layer, the first wiring and the A third wiring to which a signal different from a signal supplied to the second wiring is supplied; a first terminal electrically connected to the first wiring or the second wiring; A second terminal electrically connected to three wirings, a first connection line connecting the first wiring or the second wiring and the first terminal, the third wiring and the second terminal, One of the two first connection lines connected to the two adjacent first wirings or the two adjacent second wirings, respectively.
- At least a part is formed in one of the first wiring layer and the second wiring layer, and at least a part of the other of the two first connection lines is at least a part of the first wiring layer and the second wiring layer. It is formed in the other wiring layer of the second wiring layers, and the first connection line and the second connection line partially overlap in a plan view in the seal region where the seal material is disposed. The seal region, wherein the first connection line and the second connection line overlap each other. In the region, at least a portion of said two of said first connecting line is superimposed in plan view.
- the two first connection lines that are arranged in different layers and are adjacent to each other are provided. Since at least a portion is overlapped in plan view, a wide light transmission region can be secured.
- FIG. 1 is a plan view illustrating an example of a schematic configuration of the display device according to the first embodiment.
- FIG. 2 is a diagram illustrating an arrangement example of the counter electrode.
- FIG. 3 is an enlarged view of a region surrounded by a one-dot chain line in FIG.
- FIG. 4 is an enlarged plan view of a region including a region where the first connection line and the second connection line partially overlap in plan view in the seal region.
- 5 is a cross-sectional view taken along the line VV in FIG.
- FIG. 6 is a plan view showing a light transmission region of the present embodiment.
- FIG. 7 is an enlarged plan view of a region including a region where the first connection line and the second connection line partially overlap in a plan view in the seal region in the second embodiment.
- FIG. 8 is an enlarged plan view of a region including a region where the first connection line and the second connection line are partially overlapped in plan view in the seal region in the third embodiment.
- 9 is a cross-sectional view taken along the line IX-IX in FIG.
- FIG. 10 is a plan view showing the arrangement position of the source line inspection pattern in the fourth embodiment.
- FIG. 11 is a plan view showing the arrangement positions of the source line inspection pattern and the touch sensor inspection pattern in the modified configuration of the fourth embodiment.
- FIG. 12 is an enlarged view of a test pattern for a touch sensor.
- FIG. 13 is a plan view showing a light transmission region in a comparative configuration in which two types of first connection lines formed in different layers do not overlap in a plan view.
- a display device irradiates an active matrix substrate, a counter substrate facing the active matrix substrate, a display functional layer disposed between the active matrix substrate and the counter substrate, and light. And a sealing material that encapsulates the display function layer between the active matrix substrate and the counter substrate, and the active matrix substrate includes a first wiring formed in a first wiring layer.
- a second wiring formed in a second wiring layer different from the first wiring layer, and a third wiring layer different from the first wiring layer and the second wiring layer, the first wiring and A third wiring to which a signal different from a signal supplied to the second wiring is supplied; a first terminal electrically connected to the first wiring or the second wiring; A second terminal electrically connected to a third wiring; a first connection line connecting the first wiring or the second wiring and the first terminal; the third wiring and the second terminal; One of the two first connection lines connected to the two adjacent first wirings or the two adjacent second wirings, respectively.
- At least a portion is formed in one of the first wiring layer and the second wiring layer, and at least a portion of the other of the two first connection lines is at least a portion of the first wiring layer and the second wiring layer. It is formed in the other wiring layer of the second wiring layers, and the first connection line and the second connection line partially overlap in a plan view in the seal region where the seal material is disposed. In the seal area, the first connection line and the second connection line overlap each other. In that area, at least a portion of said two of said first connecting line is superimposed in plan view (first configuration).
- two adjacent first connection lines formed in different wiring layers are seal regions, and in a region where the first connection line and the second connection line overlap each other.
- a wide light transmission region where the first connection line and the second connection line are not arranged can be secured. Thereby, it can suppress that a sealing material becomes insufficiently hardened.
- the two first connection lines In the first configuration, in the seal region, where the first connection line and the second connection line overlap, the two first connection lines have an entire line width in a plan view.
- a superposed configuration may be used (second configuration).
- the two first connection lines overlap the entire line width in plan view, a wider light transmission region can be secured. Thereby, it can suppress more effectively that a sealing material becomes inadequate hardening.
- At least a part of the third wiring and the second connection line may be formed of a transparent conductive film (third configuration).
- the light transmission region can be widened by forming at least a part of the second connection line with the transparent conductive film.
- the third configuration at least a part of the third wiring and the second connection line is formed by laminating a metal film and the transparent conductive film, and the line width of the metal film is set to be transparent.
- a configuration narrower than the line width of the conductive film may be employed (fourth configuration).
- the resistance can be reduced as compared with the configuration formed by only the transparent conductive film.
- a light transmission part is securable by making the line
- At least a part of the second connection line is formed in the first wiring layer or the second wiring layer between the seal region and the second terminal.
- the second connection line formed in the third wiring layer can be replaced with the first wiring layer or the second wiring layer.
- the sixth configuration since at least a part of the two adjacent second connection lines are alternately formed in different wiring layers, a short circuit between the lines is suppressed as compared with the configuration configured in the same wiring layer. be able to.
- the two adjacent second connection lines may have a configuration in which at least a part of portions alternately formed in the first wiring layer and the second wiring layer overlap in a plan view. Good (seventh configuration).
- the light transmission region can be further widened.
- a boundary between the portion formed in the third wiring layer and the portion formed in the first wiring layer or the second wiring layer in the second connection line is Further, a configuration may be adopted in which the seal region or a region between the seal region and the display region is present (eighth configuration).
- the portion of the second connection line formed in the third wiring layer is in a region where the counter substrate is on the counter surface side. Therefore, even when the third wiring layer is above the first wiring layer and the second wiring layer and there are few protective layers, the possibility of wiring corrosion is reduced.
- the active matrix substrate includes the second connection line formed in the third wiring layer and the second connection line formed in the first wiring layer or the second wiring layer. It is good also as a structure further provided with the switching element for 2nd connection lines formed in the boundary with (9th structure).
- the active matrix substrate further includes a first connection line switching element electrically connected to the first terminal, and the first connection line switching element includes: The first terminal may be disposed on the opposite side of the first connection line (tenth configuration).
- the first connection line switching element is located in a region near the display region. Therefore, the frame area can be reduced.
- a boundary between a portion of the second connection line formed in the third wiring layer and a portion formed in the first wiring layer or the second wiring layer is the seal.
- a configuration may be adopted in which the region is on the opposite side of the display region from the region (eleventh configuration).
- the second connection line formed in the third wiring layer in the seal region is the first in the seal region as compared to the configuration in which the first connection layer or the second wiring layer is connected. A wide area for forming the connection line can be secured.
- the active matrix substrate further includes a second connection line switching element electrically connected to the second terminal, and the second connection line switching element includes the second connection line switching element. It is good also as a structure arrange
- the light transmission region can be widened compared to the configuration in which the second connection line switching element is formed in the seal region.
- the active matrix substrate includes the first connection line and the second connection in a region where the first connection line and the second connection line overlap in plan view.
- An insulating film provided between the wiring and the insulating film may be further provided, and the insulating film may be an organic film (a thirteenth configuration).
- the active matrix substrate may further include a plurality of touch sensor electrodes, and the third wiring may be connected to the touch sensor electrodes. 14 configuration).
- a wide light transmission region can be secured in the display device including the touch sensor electrode. Thereby, it can suppress that a sealing material becomes insufficiently hardened.
- the line width of the two first connection lines may be 3 ⁇ m, and at least a part of the two first connection lines may be overlapped by 2 ⁇ m or more in plan view.
- the fifteenth configuration it is possible to secure a sufficiently wide light transmission region where the sealing material does not become insufficiently cured.
- FIG. 1 is a plan view illustrating an example of a schematic configuration of a display device 100 according to the first embodiment.
- the display device 100 has a touch position detection function, and is a display used for, for example, a mobile phone, a portable information terminal, a game machine, a digital camera, a printer, a car navigation, an information home appliance, and the like.
- the display device 100 includes an active matrix substrate 1, a counter substrate 2, a liquid crystal layer (not shown) that is a display functional layer sandwiched between the active matrix substrate 1 and the counter substrate 2, It is a liquid crystal display provided with the sealing material 3 (refer FIG. 5) enclosed with the opposing board
- FIG. 1 the display device 100 has a vertically long rectangular shape as a whole. The long side direction of the display device 100 coincides with the Y-axis direction, and the short side direction coincides with the X-axis direction.
- a region surrounded by a dotted line is a display region 10 capable of displaying an image.
- the outside of the display area 10 is a non-display area where an image cannot be displayed.
- the active matrix substrate 1 and the counter substrate 2 are provided with a substantially transparent glass substrate.
- the long side dimension of the counter substrate 2 is shorter than the long side dimension of the active matrix substrate 1.
- the drive circuit 11 is disposed in this region.
- the drive circuit 11 is connected to an external control circuit via an FPC (Flexible Printed Circuit) (not shown).
- a plurality of gate lines (first wirings) 12 and a plurality of source lines (second wirings) 13 are arranged on the active matrix substrate 1.
- the gate lines 12 extend in the X-axis direction, and a plurality of gate lines 12 are arranged in the Y-axis direction.
- the source line 13 extends in the Y-axis direction, and a plurality of source lines 13 are arranged in the X-axis direction.
- the gate line 12 is formed in the first wiring layer, and the source line 13 is formed in a second wiring layer different from the first wiring layer.
- Each of the gate line 12 and the source line 13 is formed of, for example, a metal film such as aluminum, copper, titanium, molybdenum, or chromium, or an alloy or laminated film thereof.
- the gate line 12 and the source line 13 intersect.
- a thin film transistor (not shown) as a switching element is arranged.
- the gate electrode of the thin film transistor is connected to the gate line 12, and the source electrode is connected to the source line 13.
- the drain electrode of the thin film transistor is connected to a pixel electrode (not shown).
- the driving method of the liquid crystal molecules included in the liquid crystal layer is a lateral electric field driving method such as an IPS method or an FFS method.
- a pixel electrode and a counter electrode (sometimes referred to as a common electrode) for forming an electric field are formed on the active matrix substrate 1.
- FIG. 2 is a diagram illustrating an arrangement example of the counter electrode 31.
- the counter electrode 31 has a rectangular shape, and a plurality of counter electrodes 31 are arranged in a matrix in the display area 10.
- the counter electrode 31 also functions as a touch sensor electrode for detecting the touch position.
- the counter electrode 31 is provided with a plurality of slits for generating a lateral electric field.
- Each counter electrode 31 is connected to the drive circuit 11 via a touch sensor wiring (third wiring) 14 and a second connection line 24 extending in the Y-axis direction.
- the touch sensor wiring 14 is formed in a third wiring layer different from the first wiring layer and the second wiring layer, and a signal different from the signal supplied to the gate line 12 and the source line 13 is supplied.
- the touch sensor wiring 14 and the second connection line 24 are formed of, for example, a metal film such as copper, titanium, molybdenum, aluminum, or chromium, or an alloy or laminated film thereof.
- the second connection line 24 is shown in a straight line shape, but actually, as shown in FIG. 1, it is not a straight line shape.
- ⁇ Briefly describe how to detect the touch position.
- a parasitic capacitance is formed between the counter electrode 31 and the adjacent counter electrode 31 or the like, but when a human finger or the like touches the display screen of the display device 100, a capacitance is formed between the counter electrode 31 or the human finger or the like. As a result, the capacitance increases.
- the drive circuit 11 supplies a touch drive signal to the counter electrode 31 via the touch sensor wiring 14 and receives the touch detection signal via the touch sensor wiring 14. Thereby, a change in capacitance is detected, and a touch position is detected.
- This touch position detection method is a so-called self-capacitance method.
- a pair of gate drivers 15 are arranged on both outer sides in the short side direction of the display area 10.
- Each gate line 12 is connected to a gate driver 15.
- the gate driver 15 is connected to a gate driver driving signal terminal 17 through a gate driver driving wiring 16.
- the gate driver 15 supplies a scanning signal input from an external control circuit via the gate driver driving wiring 16 to each gate line 12 at a predetermined timing, and scans each gate line 12 sequentially.
- the sealing material 3 is provided to enclose the liquid crystal layer in the active matrix substrate 1 and the counter substrate 2.
- a photo-curing resin that is cured by irradiation with light is used.
- the photocurable resin may be a resin that is cured by irradiating ultraviolet rays, or may be a resin that is cured by irradiating visible light. Alternatively, a resin that is cured by irradiation with light other than ultraviolet light or visible light may be used.
- the sealing material which has both photocurability and thermosetting property may be sufficient.
- seal region 20 the region where the sealing material 3 is disposed is referred to as a seal region 20.
- the seal area 20 is formed outside the display area 10 and surrounding the display area 10.
- FIG. 3 is an enlarged view of a region surrounded by a one-dot chain line in FIG.
- the active matrix substrate 1 is provided with a source line inspection pattern 18.
- the source line inspection pattern 18 is provided with a plurality of switching elements (inspection TFTs) for controlling the supply of signals to the source line 13 in order to detect a short circuit or disconnection of the source line 13.
- the source line inspection pattern 18 is connected to a source line inspection signal input terminal 19.
- a source line inspection signal is input to the source line inspection signal input terminal 19 from an external control circuit.
- the source line 13 is provided in the display area 10.
- a first connection line 21 is provided in a non-display area outside the display area 10.
- the first connection line 21 is a line for connecting the source line 13 and the source line signal output terminal (first terminal) 26 in the non-display region. That is, the source line 13 is electrically connected to the source line signal output terminal 26 via the first connection line 21.
- the first connection line 21 is formed of, for example, a metal film such as aluminum, copper, titanium, molybdenum, or chromium, or an alloy or laminated film thereof.
- first connection line 21 a portion between the source line 13 and the source line inspection pattern 18 is formed in the same second wiring layer as the source line 13.
- portions of the first connection line 21 between the source line inspection pattern 18 and the source line signal output terminal 26 are formed on the same second wiring layer as the source line 13 and the gate line.
- the first connection line 21 formed in the first wiring layer is referred to as a first connection line 21a, and is connected to the second wiring layer.
- the formed first connection line 21 is referred to as a first connection line 21b.
- the 1st connection line 21 generically.
- the first connection lines 21a and the first connection lines 21b are alternately arranged. That is, one of the two adjacent source lines 13 is connected to the first connection line 21a, and the other is connected to the first connection line 21b.
- the adjacent first connection line 21a and the first connection line 21b are shown separated from each other. However, as will be described later, in the present embodiment, the adjacent first connection line 21a and A part of the first connection line 21b overlaps in plan view.
- the active matrix substrate 1 is provided with an inspection pattern 22 for touch sensors.
- the touch sensor test patterns 22 are arranged in two places, but the invention is not limited to two places.
- the touch sensor inspection pattern 22 is provided with a plurality of switching elements (inspection TFTs) for controlling the supply of signals to the touch sensor wiring 14 in order to detect a short circuit or disconnection of the touch sensor wiring 14. ing.
- the touch sensor test pattern 22 is connected to a touch sensor test signal input terminal 23.
- the touch sensor inspection signal input terminal 23 receives a touch sensor inspection signal from an external control circuit. In each of the two touch sensor test patterns 22, wirings for inputting the same touch sensor test signal may be connected to each other.
- this connection wiring is formed by using the third wiring layer, and can be manufactured without adding a process.
- the touch sensor wiring 14 is provided in the display area 10.
- a second connection line 24 is provided in the non-display area outside the display area 10.
- the second connection line 24 is a line for connecting the touch sensor wiring 14 and the touch sensor signal output terminal (second terminal) 25 in the non-display area. That is, the touch sensor wiring 14 is electrically connected to the touch sensor signal output terminal 25 via the second connection line 24.
- the second connection line 24 a portion between the touch sensor wiring 14 and the touch sensor inspection pattern 22 is formed in the same third wiring layer as the touch sensor wiring 14.
- the portion of the second connection line 24 between the touch sensor test pattern 22 and the touch sensor signal output terminal 25 is a line formed in the same first wiring layer as the gate line 12 and a source line.
- the second connection line 24 formed in the first wiring layer is referred to as a second connection line 24a
- the second wiring layer is formed in the second wiring layer.
- the formed second connection line 24 is referred to as a second connection line 24b.
- the second connection line 24 formed in the third wiring layer is referred to as a second connection line 24c.
- a second connection line 24c When it is not necessary to distinguish the second connection line 24a, the second connection line 24b, and the second connection line 24c, they are collectively referred to as the second connection line 24.
- the second connection line 24c connected to the touch sensor wiring 14 is the touch sensor test pattern 22 formed on the second connection line 24a formed on the first wiring layer or the second wiring layer.
- the second connection line 24b is connected.
- the line formed in the first wiring layer, the line formed in the second wiring layer, and the line formed in the third wiring layer are distinguished by the thickness of the line. That is, the lines are illustrated so as to become thicker in the order of the line formed in the third wiring layer, the line formed in the first wiring layer, and the line formed in the second wiring layer.
- the second connection lines 24a and the second connection lines 24b are alternately arranged. That is, one of the two adjacent second connection lines 24c is connected to the second connection line 24a, and the other is connected to the second connection line 24b.
- connection lines such as the first connection line 21 and the second connection line 24 may be referred to as lead-out lines.
- the touch sensor test pattern 22 is formed in a seal region 20, that is, a region where the counter substrate 2 facing the active matrix substrate 1 is provided. That is, the second connection line 24 c formed in the third wiring layer is not formed in a region where the counter substrate 2 is not present.
- the second connection line 24a formed in the first wiring layer and the second connection line 24b formed in the second wiring layer are also formed in a region without the counter substrate 2, as shown in FIG. ing.
- the third wiring layer in which the second connection line 24c is formed is farthest from the glass substrate of the active matrix substrate 1 as compared with the first wiring layer and the second wiring layer. It is in. Since the second insulating film 55 (see FIG. 5) is the only insulating film that protects the second connecting line 24c, if the second connecting line 24c is formed in a region where the counter substrate 2 is not present, there is a concern that wiring corrosion may occur. In addition, when it is necessary to replace the drive circuit 11 due to a defect in the drive circuit 11 after the drive circuit 11 is mounted, if the second connection line 24c is formed in a region where the counter substrate 2 is not present, the second connection line 24c is formed. The connection line 24c is easily lost.
- the second connection line 24c is not formed in a region where the counter substrate 2 is not present, it is possible to suppress the occurrence of the above-described problems such as wiring corrosion and defects. Further, since the adjacent second connection lines 24c are alternately connected to the second connection lines 24a and the second connection lines 24b formed in different layers, only the second connection lines 24a or the second connection lines are connected. Compared with the case where only the line 24b is connected, the line width and the line interval can be increased. Thereby, since a disconnection and a short circuit can be reduced, the yield at the time of manufacture can be improved.
- the second connection line 24a formed in the first wiring layer and the second connection line 24b formed in the second wiring layer include the first insulating film 53, the planarizing film 54, and the second insulating film 55. (See FIG. 5), even if it is formed in a region where the counter substrate 2 is not present, the above-described problems such as wiring corrosion and defects are unlikely to occur.
- connection from the second connection line 24c to the second connection line 24a or the second connection line 24b is performed in the seal region 20, but may be performed between the seal region 20 and the display region 10.
- the second connection line 24c formed in the third wiring layer may be connected to only the second connection line 24a formed in the first wiring layer, or may be formed in the second wiring layer. It is good also as a structure which can be switched only to the 2nd connection line 24b which is. Which layer line the second connection line 24c is connected to can be determined as appropriate depending on the number of the second connection lines 24, the size of the drive circuit 11, and the outer shape of the liquid crystal display (the size of the frame region). . For example, as described later with reference to FIG. 5, the second connection line 24a formed in the first wiring layer has more protective layers than the second connection line 24b formed in the second wiring layer. When the second connection line 24c is replaced with only the second connection line 24a, concerns such as wiring corrosion can be further reduced.
- the touch sensor test pattern 22 is formed in the seal region 20, that is, the region where the counter substrate 2 facing the active matrix substrate 1 is provided.
- a black matrix is provided in a region on the counter substrate 2 side facing the region where the touch sensor inspection pattern 22 is formed.
- the drive circuit 11 is not mounted, and a plurality of switching elements (inspection TFTs) included in the touch sensor inspection pattern 22 are included in the drive circuit chip. It is not covered with. For this reason, in the case where the black matrix is not formed in the region on the counter substrate 2 facing the region where the touch sensor test pattern 22 is formed, the external light may be switched by the switching element (test TFT) depending on the test environment.
- the characteristics of the switching element may fluctuate.
- the black matrix is provided in the area on the counter substrate 2 side that faces the area where the touch sensor test pattern 22 is formed, the characteristics of the switching element during the test are not changed. Can be suppressed.
- the first connection line 21a, the first connection line 21b, and the second connection line 24c intersect each other. That is, in the seal region, the first connection line 21a, the first connection line 21b, and the second connection line 24c partially overlap in plan view.
- FIG. 4 is an enlarged plan view of a region including a region where the first connection line 21a, the first connection line 21b, and the second connection line 24c partially overlap in plan view in the seal region 20.
- the first connection line 21 a and the first connection line 21 b formed in different layers in the region where the first connection line 21 a and the first connection line 21 b overlap the second connection line 24 in the seal region 20.
- the first connection line 21b partially overlaps in plan view.
- the line width of the first connection line 21a is 3 ⁇ m, and the interval h1 between the adjacent first connection lines 21a is 6 ⁇ m.
- the line width of the first connection line 21b is 3 ⁇ m, and the interval h2 between the adjacent first connection lines 21b is 6 ⁇ m.
- the first connection line 21a and the first connection line 21b are parallel and partly overlapped.
- the overlapping width h3 of the first connection line 21a and the first connection line 21b is 1 ⁇ m.
- the line width of the second connection line 24c is 3 ⁇ m, and the interval h4 between the adjacent second connection lines 24c is 9.5 ⁇ m.
- the overlapping width h3 of the first connection line 21a and the first connection line 21b may be less than 1 ⁇ m, or may be 1 ⁇ m or more and less than 3 ⁇ m. Further, the line widths of the first connection line 21a and the first connection line 21b may not be the same. Furthermore, the line width of the first connection line 21a, the first connection line 21b, and the second connection line 24c and the interval between adjacent lines are not limited to the above-described numerical values.
- FIG. 5 is a cross-sectional view taken along the line VV in FIG.
- a first connection line 21 a is formed on the glass substrate 51 of the active matrix substrate 1.
- the first connection line 21a is formed in the same first wiring layer as the gate line 12 and the gate electrode.
- the gate insulating film 52 is formed so as to cover the first connection line 21a.
- the gate insulating film 52 is made of, for example, silicon nitride (SiNx) or silicon oxide (SiOx).
- the first connection line 21b is formed on the gate insulating film 52.
- the first connection line 21b is formed in the same second wiring layer as the source line 13 and the source electrode.
- the first connection line 21a and the first connection line 21b partially overlap in plan view, and the overlap width h3 is, for example, 1 ⁇ m.
- the first insulating film 53 is formed so as to cover the first connection line 21b.
- the first insulating film 53 is made of, for example, silicon nitride (SiNx) or silicon oxide (SiOx).
- a planarizing film 54 which is an insulating film is formed.
- the planarization film 54 is an organic film, and is made of, for example, a photosensitive acrylic resin material.
- the planarization film 54 is made of a material having a low relative dielectric constant (for example, 2 to 4) in order to reduce the capacitance between the first connection line 21a, the first connection line 21b, and the second connection line 24. It is preferable to form a thick film (for example, 1 to 4 ⁇ m).
- a second connection line 24 c is formed on the planarizing film 54.
- the second insulating film 55 is formed so as to cover the second connection line 24c.
- the second insulating film 55 is made of, for example, silicon nitride (SiNx) or silicon oxide (SiOx).
- the counter electrode 31 is formed on the second insulating film 55.
- the counter electrode 31 is connected to the touch sensor wiring 14 through a contact hole formed in the second insulating film 55.
- the pixel electrode provided in the display region 10 is formed on the planarizing film 54 and covered with the second insulating film 55 in the same manner as the second connection line 24c.
- the sealing material 3 is provided on the second insulating film 55.
- the spacers disposed in the seal region 20 are omitted.
- a counter substrate 2 is provided on the opposite side of the active matrix substrate 1 with the sealing material 3 interposed therebetween.
- a black matrix 57 is formed on the glass substrate 56 of the counter substrate 2, and an overcoat layer 58 is formed between the black matrix 57 and the sealing material 3.
- a color filter (not shown) is formed in the display area 10 of the counter substrate 2.
- the sealing material 3 is made of a photo-curing resin that cures when irradiated with light.
- Light is irradiated from the glass substrate 51 side of the active matrix substrate 1. Since the first connection line 21a, the first connection line 21b, and the second connection line 24 are formed of an opaque metal film with low light transmittance, the light irradiated from the glass substrate 51 side is the first connection line.
- the seal material 3 is reached via the region S1 where the line 21a, the first connection line 21b, and the second connection line 24 are not formed. As shown in FIG. 5, the first connection line 21a and the first connection line 21b are partially overlapped, so that the first connection line 21a and the first connection line 21b are not overlapped with each other.
- the region S1 in which the connection line 21a, the first connection line 21b, and the second connection line 24 are not formed (hereinafter referred to as the light transmission region S1) can be widened. Thereby, since sufficient light can be irradiated to the sealing material 3, it can suppress that the sealing material 3 becomes insufficiently cured at the time of manufacturing the display device 100.
- FIG. 6 is a plan view showing the light transmission region S1 of the present embodiment.
- FIG. 13 is a plan view showing the light transmission region S2 in the comparative configuration in which the first connection line 131a and the first connection line 131b do not overlap in plan view.
- the light transmission region S2 is a region surrounded by the first connection line 131a, the first connection line 131b, and the second connection line 132c.
- the ratio of the light transmission region S2 in the seal region is about 25%.
- the ratio of the light transmission region S1 in the seal region 20 is about 33%. This value of 33% is equivalent to the ratio of the light transmission region when the second connection line 132c is excluded in the comparative configuration shown in FIG. 13, and the inventor of the present application causes insufficient curing of the sealing material 3. It has been confirmed that there is no.
- the touch sensor wiring 14 and the second connection line 24 that are configurations for detecting a touch position are arranged on a display device without a touch detection function. Even if it exists, in the seal
- region S1 in order to ensure wide light transmission area
- the active matrix substrate 1 when the active matrix substrate 1 is manufactured, there may be a misalignment of about 1 ⁇ m in the second wiring layer in which the first connection line 21b is formed with respect to the first wiring layer in which the first connection line 21a is formed.
- the overlapping width h3 of the first connection line 21a and the first connection line 21b is preferably at least 1 ⁇ m or more. More preferably, the overlapping width h3 of the first connection line 21a and the first connection line 21b is 2 ⁇ m or more.
- a second connection line 24a formed in the first wiring layer and a second connection line 24b formed in the second wiring layer are formed in the seal region 20 .
- a second connection line 24 a and a second connection line 24 b are formed in a region between the touch sensor test pattern 22 and the touch sensor signal output terminal 25. In this region, if a part of the adjacent second connection line 24a and second connection line 24b is overlapped, the light transmission region S1 can be further widened, and the curing of the sealing material 3 is more effectively prevented. Can be suppressed.
- FIG. 7 is an enlarged view of a region including a region where the first connection line 21a, the first connection line 21b, and the second connection line 24c partially overlap in plan view in the seal region 20 in the second embodiment. It is a top view.
- the first connection line 21a and the first connection line 21b respectively connected to the two adjacent source lines 13 are completely overlapped. That is, the line width of the first connection line 21a and the first connection line 21b is 3 ⁇ m as in the first embodiment, but the overlap width h3 of the first connection line 21a and the first connection line 21b is 3 ⁇ m. .
- the ratio of the light transmission region S1 in the seal region 20 is about 50%. That is, according to the configuration of the second embodiment, the light transmission region S1 can be widened compared to the configuration of the first embodiment, so that the insufficient curing of the sealing material 3 can be more effectively suppressed. Can do.
- the sealing material 3 is not insufficiently cured. Therefore, in the configuration in which the first connection line 21a and the first connection line 21b respectively connected to the two adjacent source lines 13 are completely overlapped, the line width of the first connection line 21a and the first connection line 21b is increased. However, the area ratio of the light transmission region may be maintained at 33%. Since the disconnection of the first connection line 21a and the first connection line 21b can be suppressed by widening the line widths of the first connection line 21a and the first connection line 21b, it is possible to improve the manufacturing yield. it can. Instead of increasing the line width of the first connection line 21a and the first connection line 21b, the line width of the second connection line 24 may be increased.
- the seal region 20 is formed with a second connection line 24a formed in the first wiring layer and a second connection line 24b formed in the second wiring layer. There is an area. In this region, if the second connection line 24a and the second connection line 24b respectively connected to two adjacent second connection lines 24c are completely overlapped, the light transmission region S1 can be further widened. And insufficient curing of the sealing material 3 can be more effectively suppressed.
- FIG. 8 is an enlarged view of a region including a region where the first connection line 21a, the first connection line 21b, and the second connection line 24c partially overlap in plan view in the seal region 20 in the third embodiment. It is a top view. 9 is a cross-sectional view taken along the line IX-IX in FIG.
- the second connection line 24 c is formed of two layers of a metal film 81 and a transparent conductive film 82.
- a transparent conductive film 82 is formed under the metal film 81.
- the metal film 81 is an opaque metal film with low light transmittance, and is made of, for example, copper, titanium, molybdenum, aluminum, chromium, or an alloy thereof.
- the transparent conductive film 82 is, for example, ITO.
- the transparent conductive film 82 is not limited to ITO, and may be formed of other transparent conductive materials such as IZO. Since the transparent conductive film 82 is formed in the same layer as the pixel electrode, a pattern can be formed in the same process using the same material as the pixel electrode.
- the touch sensor wiring 14 formed in the third wiring layer is also formed of two layers of a metal film and a transparent conductive film.
- the line width of the metal film 81 is narrower than the line width of the transparent conductive film 82.
- the metal film 81 has a line width of 3 ⁇ m
- the transparent conductive film 82 has a line width of 5 ⁇ m.
- these numerical values are examples, and for example, the line width of the transparent conductive film may be 5 ⁇ m or more (for example, 7 ⁇ m or more).
- the resistance of ITO is one digit higher. Therefore, when all of the touch sensor wiring 14 and the second connection line 24c are formed of a transparent conductive film such as ITO, the signal transmission is lowered. However, in this embodiment, since the touch sensor wiring 14 and the second connection line 24c are configured by two layers of the metal film 81 and the transparent conductive film 82, low resistance and redundancy are ensured while ensuring a translucent portion. The wiring can be excellent.
- the line width of the metal film 81 of the second connection line 24c in the seal region 20 is narrowed (for example, 2 ⁇ m), and the metal film 81 in the region inside the display region 20 (display region 10 side).
- the line width may be increased (for example, 4 ⁇ m).
- FIG. 10 is a plan view showing the arrangement position of the source line inspection pattern 18 in the fourth embodiment. 10, the same components as those in FIG. 3 are denoted by the same reference numerals.
- the source line inspection pattern 18 is formed inside the seal region 20, but in this embodiment, it is formed in the region 101 where the drive circuit 11 is mounted. More specifically, the source line inspection pattern 18 is formed on the opposite side of the source line signal output terminal 26 from the first connection lines 21a and 21b.
- the source line inspection pattern 18 is arranged in the mounting area 101 of the drive circuit 11, it is not necessary to arrange the source line inspection pattern 18 in an area close to the display area 10, so that the frame area can be reduced. it can. Further, since it is not necessary to form the wiring 102 connecting the source line inspection pattern 18 and the source line inspection signal input terminal 19 in the seal region 20, the connection lines (first connection lines 21a, 21b, second The degree of freedom of layout of the connection line 24c) is improved.
- the portion where the disconnection of the connection line cannot be detected (the source line inspection pattern 18 and the source line signal output). Terminal 26).
- disconnection of the connection line between the source line inspection pattern 18 and the source line signal output terminal 26 can also be detected.
- the touch sensor test pattern 22 is not arranged in the region 101 where the drive circuit 11 is mounted.
- a region below the touch sensor signal output terminal 25 (a region opposite to the second connection lines 24a and 24b with respect to the touch sensor signal output terminal 25) is provided as a region where the source line inspection pattern 18 is disposed. ) Can also be used.
- the source line inspection pattern 18 can be arranged in a wide region in the X-axis direction, defects such as disconnection and short circuit in the source line inspection pattern 18 can be suppressed.
- a high-definition display device having a large number of source lines 13 can be inspected.
- FIG. 11 is a plan view showing the arrangement positions of the source line inspection pattern 18 and the touch sensor inspection pattern 22 in the modified configuration of the fourth embodiment. 11, the same components as those in FIGS. 3 and 10 are denoted by the same reference numerals.
- the touch sensor test pattern 22 is formed on the side opposite to the second connection lines 24 a and 24 b with respect to the touch sensor signal output terminal 25.
- the second connection line 24 c is connected to the second connection line 24 a or the second connection line 24 b in a region opposite to the display region 10 with respect to the seal region 20.
- the second connection line 24c formed in the third wiring layer is connected to the second connection line 24a or the second wiring layer formed in the first wiring layer in a region where the counter substrate 2 is not present. It is connected to the formed second connection line 24b.
- region which forms 1st connection line 21a, 21b can be ensured widely.
- the first wiring layer in which the first connection line 21a is formed has the first wiring layer.
- the second connection line 24 arranged in the seal region 20 is only the second connection line 24 c formed in the third wiring layer. Thereby, the space
- the formation region is limited to the size of the drive circuit 11.
- the width of the drive circuit 11 is narrower than the width of the display region 10, for example, it is necessary to arrange switching elements (inspection TFTs) in a staggered manner over a plurality of stages.
- FIG. 12 is a partially enlarged view of the test pattern 22 for the touch sensor.
- a plurality of switching elements (inspection TFTs) 121 included in the touch sensor inspection pattern 22 are arranged in a staggered manner over four stages.
- a plurality of switching elements (inspection TFTs) included in the source line inspection pattern 18 are similarly arranged in a staggered manner over a plurality of stages.
- a voltage is applied from the first common wiring 122a and / or the second common wiring 122b to the counter electrode 31 via a predetermined touch sensor wiring 14 to display a specific pattern.
- One of the adjacent touch sensor wirings 14 is connected to the first common wiring 122 a through the switching element 121, and the other is connected to the second common wiring 122 b through the switching element 121.
- a disconnection or a short circuit failure is detected by confirming whether the specific pattern is normally displayed by visual determination by an inspector or determination by image processing.
- a reference potential is supplied to the pixel electrode using the gate driver 15 and the source line inspection pattern 18.
- Specified patterns include, for example, a stripe pattern and a checkered pattern.
- the stripe pattern is a display pattern in which white display and black display are alternately displayed for each row with respect to pixels corresponding to the counter electrode 31 arranged over a plurality of rows.
- the checkered pattern is a pixel corresponding to one of the two adjacent counter electrodes in either the row direction or the column direction in the pixel corresponding to the counter electrode 31 arranged in a matrix.
- This is a display pattern in which display is performed and pixels corresponding to the other display are black.
- the white display is a display that transmits light from a light source (backlight) disposed on the back surface (the glass substrate side of the active matrix substrate 1) of the display device, and the black display is from the light source. It is a display that does not transmit the light.
- the common wiring 122 connected to the switching element 121 should be at least two like the first common wiring 122a and the second common wiring 122b in FIG. good.
- an on / off control wiring 123 for controlling on / off of the switching element 121 is shown separately from the first common wiring 122a and the second common wiring 122b. At the time of inspection, the same signal is input to the on / off control wiring 123.
- the number of common wirings 122 for inputting inspection signals to the switching element 121 is increased, various patterns can be displayed, and the inspection accuracy can be increased. For example, when the number of common wirings 122 is four, a short circuit between adjacent wirings formed in the same wiring layer can also be detected. On the other hand, when the number of the common wirings 122 is increased, in order to secure the arrangement area, it may not be possible to cope with the narrowing of the frame or the layout of the connection line width may be difficult. For this reason, the number of common wirings 122 is appropriately set according to the FPC terminal area, the outer shape of the liquid crystal display (the size of the frame area), and the like.
- the liquid crystal display with a touch sensor function has been described as an example of the display device 100.
- the display device 100 is not limited to the liquid crystal display with a touch sensor function.
- the display device 100 may be an organic electroluminescence (organic EL) display that does not include a touch panel.
- the first wiring can correspond to the gate line, the second wiring to the source line, and the third wiring to the wiring that supplies current to the organic EL layer during the light emission period.
- the gate bus line 113, the data bus line 112, and the light emission control line 121 are respectively connected to the first wiring and the second wiring. This can correspond to the third wiring.
- the gate line 12 extends in the X-axis direction and is arranged in the Y-axis direction
- the source line 13 extends in the Y-axis direction and is arranged in the X-axis direction. It was. However, even if the gate line 12 extends in the Y-axis direction, a plurality of gate lines 12 are arranged in the X-axis direction, and the source line 13 extends in the X-axis direction, and a plurality of source lines 13 are arranged in the Y-axis direction. good.
- the first wiring is the gate line 12
- the second wiring is the source line 13
- the third wiring is the touch sensor wiring 14, but the first wiring to the third wiring are these. You are not limited to lines.
- the driving method of the liquid crystal molecules contained in the liquid crystal layer of the liquid crystal display has been described as a horizontal electric field driving method of horizontal alignment such as the IPS method or the FFS method, other methods may be used.
- a lateral electric field driving method using a liquid crystal having a negative dielectric anisotropy and a vertical alignment film may be used.
- a method of forming an alignment support layer of a polymer on an alignment film is known.
- a VA (vertical alignment) liquid crystal display for example, PSA (Polymer Sustained Alignment) technology has been put to practical use.
- a photopolymerizable monomer is added to the liquid crystal, and the monomer is polymerized by light or heat in a state where a voltage is applied to the liquid crystal (a state where the liquid crystal molecules are inclined from the vertical direction).
- a polymer layer is formed on the alignment film (vertical alignment film in the case of the VA method) so that the initial alignment direction of the liquid crystal molecules is slightly inclined (2 to 3 degrees) from the vertical alignment.
- Such an alignment method using a polymer is also used in the case of a lateral electric field driving method such as an IPS method or an FFS method.
- a lateral electric field driving method such as an IPS method or an FFS method.
- the horizontal electric field method a polymer is formed on a horizontal alignment film that has been subjected to alignment treatment by rubbing or photo-alignment, but the monomer is polymerized without applying a voltage to the liquid crystal. If charges are accumulated in the pixel electrode or the counter electrode during the polymerization, the liquid crystal is polymerized in an unfavorable alignment state, which causes display unevenness and contrast reduction.
- the charge of the pixel electrode and the counter electrode 31 is obtained by using the switching element 121 included in the touch sensor wiring 14, the second connection line 24, and the touch sensor test pattern 22 so that no voltage is applied to the liquid crystal.
- the touch position detection method is a so-called self-capacitance method, but may be a mutual capacitance method. That is, the present invention can be applied to a display device having a mutual capacitive touch position detection function.
- the specific pattern displayed at the time of inspection is not limited to the above-described stripe pattern or checkered pattern.
- the source line 13 is provided in the display area 10, and the first connection line 21 connected to the source line 13 is provided in the non-display area.
- the source line 13 may have a length arranged not only in the display area 10 but also in the non-display area.
- the source line 13 has been described as being connected to the source line signal output terminal 26 via the first connection line 21, but the source line 13 and the first connection line 21 are all not distinguished. Can also be referred to as source lines. The same applies to the gate line 12 and the touch sensor wiring 14.
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Abstract
Description
以下、図面を参照し、本発明の実施の形態を詳しく説明する。図中同一または相当部分には同一符号を付してその説明は繰り返さない。なお、説明を分かりやすくするために、以下で参照する図面においては、構成が簡略化または模式化して示されたり、一部の構成部材が省略されたりしている。また、各図に示された構成部材間の寸法比は、必ずしも実際の寸法比を示すものではない。
図1は、第1の実施形態における表示装置100の概略構成の一例を示す平面図である。この表示装置100は、タッチ位置検出機能を有し、例えば携帯電話機、携帯情報端末、ゲーム機、デジタルカメラ、プリンタ、カーナビゲーション、情報家電等に用いられるディスプレイである。
図7は、第2の実施形態において、シール領域20において、第1接続線21a及び第1接続線21bと、第2接続線24cが平面視で一部重畳している領域を含む領域の拡大平面図である。第2の実施形態では、隣接する2本のソース線13とそれぞれ接続されている第1接続線21a及び第1接続線21bは完全に重なっている。すなわち、第1接続線21a及び第1接続線21bの線幅は、第1の実施形態と同様に3μmであるが、第1接続線21a及び第1接続線21bの重なり幅h3は3μmである。
図8は、第3の実施形態において、シール領域20において、第1接続線21a及び第1接続線21bと、第2接続線24cが平面視で一部重畳している領域を含む領域の拡大平面図である。図9は、図8のIX-IX切断線における断面図である。
図10は、第4の実施形態において、ソース線用検査パターン18の配置位置を示す平面図である。図10において、図3と同じ構成部分については、同じ符号を付している。第1の実施形態では、ソース線用検査パターン18は、シール領域20の内側に形成されていたが、本実施形態では、駆動回路11を実装する領域101に形成されている。より詳細には、ソース線用信号出力端子26を挟んで第1接続線21a、21bとは反対側に、ソース線用検査パターン18が形成されている。
図11は、第4の実施形態の変形構成において、ソース線用検査パターン18及びタッチセンサ用検査パターン22の配置位置を示す平面図である。図11において、図3及び図10と同じ構成部分については、同じ符号を付している。この変形構成例では、ソース線用検査パターン18だけでなく、タッチセンサ用検査パターン22も駆動回路11を実装する領域101に形成されている。より詳細には、タッチセンサ用検査パターン22は、タッチセンサ用信号出力端子25に対して、第2接続線24a、24bとは反対側に形成されている。すなわち、第2接続線24cは、第2接続線24aまたは第2接続線24bと、シール領域20に対して表示領域10とは反対側の領域で繋ぎ換えられている。
Claims (15)
- アクティブマトリクス基板と、
前記アクティブマトリクス基板に対向する対向基板と、
前記アクティブマトリクス基板及び前記対向基板の間に配置された表示機能層と、
光を照射することによって硬化する材料からなり、前記アクティブマトリクス基板及び前記対向基板の間に前記表示機能層を封入するシール材と、
を備え、
前記アクティブマトリクス基板は、
第1配線層に形成された第1配線と、
前記第1配線層とは異なる第2配線層に形成された第2配線と、
前記第1配線層及び前記第2配線層とは異なる第3配線層に形成され、前記第1配線及び前記第2配線に供給される信号とは異なる信号が供給される第3配線と、
前記第1配線または前記第2配線に電気的に接続された第1端子と、
前記第3配線と電気的に接続された第2端子と、
前記第1配線または前記第2配線と前記第1端子との間を接続する第1接続線と、
前記第3配線と前記第2端子との間を接続する第2接続線と、
を備え、
隣接する2本の前記第1配線または隣接する2本の前記第2配線にそれぞれ接続される2本の前記第1接続線の一方は、少なくとも一部が前記第1配線層及び前記第2配線層のうちの一方の配線層に形成され、前記2本の前記第1接続線の他方は、少なくとも一部が前記第1配線層及び前記第2配線層のうちの他方の配線層に形成されており、
前記第1接続線及び前記第2接続線は、前記シール材が配置されているシール領域において、平面視で一部が重畳しており、
前記シール領域であって、前記第1接続線及び前記第2接続線が重畳している領域において、前記2本の前記第1接続線の少なくとも一部は、平面視で重畳している、表示装置。 - 前記シール領域であって、前記第1接続線及び前記第2接続線が重畳している領域において、前記2本の前記第1接続線は、平面視で線幅全体が重畳している、請求項1に記載の表示装置。
- 前記第3配線及び前記第2接続線は、少なくとも一部が透明導電膜により形成されている、請求項1または2に記載の表示装置。
- 前記第3配線及び前記第2接続線は、少なくとも一部が金属膜及び前記透明導電膜が積層されることによって形成されており、
前記金属膜の線幅は、前記透明導電膜の線幅よりも狭い、請求項3に記載の表示装置。 - 前記第2接続線は、前記シール領域と前記第2端子との間において、少なくとも一部が前記第1配線層または前記第2配線層に形成されている、請求項1から4のいずれか一項に記載の表示装置。
- 前記シール領域と前記第2端子との間において隣接する2本の前記第2接続線の少なくとも一部は、前記第1配線層及び前記第2配線層に交互に形成されている、請求項5に記載の表示装置。
- 隣接する2本の前記第2接続線は、前記第1配線層及び前記第2配線層に交互に形成されている部分の少なくとも一部が平面視で重畳している、請求項6に記載の表示装置。
- 前記第2接続線のうち、前記第3配線層に形成されている部分と、前記第1配線層または前記第2配線層に形成されている部分の境界は、前記シール領域、または前記シール領域と表示領域の間の領域にある、請求項6または7に記載の表示装置。
- 前記アクティブマトリクス基板は、前記第3配線層に形成されている前記第2接続線と、前記第1配線層または前記第2配線層に形成されている前記第2接続線との境界に形成されている第2接続線用スイッチング素子をさらに備える、請求項8に記載の表示装置。
- 前記アクティブマトリクス基板は、前記第1端子と電気的に接続されている第1接続線用スイッチング素子をさらに備え、
前記第1接続線用スイッチング素子は、前記第1端子を挟んで前記第1接続線とは反対側に配置されている、請求項1から9のいずれか一項に記載の表示装置。 - 前記第2接続線のうち、前記第3配線層に形成されている部分と、前記第1配線層または前記第2配線層に形成されている部分の境界は、前記シール領域に対して表示領域とは反対側の領域にある、請求項5に記載の表示装置。
- 前記アクティブマトリクス基板は、前記第2端子と電気的に接続されている第2接続線用スイッチング素子をさらに備え、
前記第2接続線用スイッチング素子は、前記第2端子を挟んで前記第2接続線とは反対側に配置されている、請求項10または11に記載の表示装置。 - 前記アクティブマトリクス基板は、前記第1接続線と前記第2接続線が平面視で重畳している領域において、前記第1接続線と前記第2接続線との間に設けられている絶縁膜をさらに備え、
前記絶縁膜は有機膜である、請求項1から12のいずれか一項に記載の表示装置。 - 前記アクティブマトリクス基板は、複数のタッチセンサ用電極をさらに備え、
前記第3配線は、前記タッチセンサ用電極と接続されている、請求項1から13のいずれか一項に記載の表示装置。 - 前記2本の前記第1接続線の線幅は3μmであり、前記2本の前記第1接続線の少なくとも一部は、平面視で2μm以上重畳している、請求項1に記載の表示装置。
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JP7160643B2 (ja) * | 2018-11-16 | 2022-10-25 | 株式会社ジャパンディスプレイ | 表示装置 |
CN118363216A (zh) * | 2019-04-10 | 2024-07-19 | 武汉华星光电技术有限公司 | 显示面板及显示装置 |
KR20220016407A (ko) | 2020-07-31 | 2022-02-09 | 삼성디스플레이 주식회사 | 디스플레이 장치 |
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