CN102162941A - Liquid crystal display device and manufacturing method thereof - Google Patents
Liquid crystal display device and manufacturing method thereof Download PDFInfo
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- CN102162941A CN102162941A CN2011100440455A CN201110044045A CN102162941A CN 102162941 A CN102162941 A CN 102162941A CN 2011100440455 A CN2011100440455 A CN 2011100440455A CN 201110044045 A CN201110044045 A CN 201110044045A CN 102162941 A CN102162941 A CN 102162941A
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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
- G02F1/13458—Terminal pads
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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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
- G02F1/1341—Filling or closing 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
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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
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
Abstract
The invention provides a liquid crystal display device capable of surely performing the discharge of static electricity from the outside with a simple structure. On the surface of a color filter substrate (1) at the visible side of the liquid crystal display device is formed with a conductive layer (3) for protecting the liquid crystal from being effected by the static electricity and metal wiring (9) is formed on a TFT substrate (2) extending to the outside of the sealing material (10). The TFT substrate is also equipped with a terminal part and the terminal part is connected with an external circuit (8). The metal wiring of the ESD is electrically connected with the GND line of the external circuit at the edge at one side of the terminal part of the TFT substrate. Conductive material (4) is filled in the gap of the outside of the sealing material. The metal wiring of the ESD is electrically connected with the conductive layer (4) of the color filter substrate by the conductive material (4). Therefore, the static electricity from the outside is discharged to the grounding via the conductive layer, the conductive material, the ESD wiring and the route of the external circuit.
Description
Technical field
The present invention relates to Liquid crystal disply device and its preparation method, particularly relate to the liquid crystal indicator that prevents to cause producing the structure of display abnormality from external static electrification etc.
Background technology
Liquid crystal indicator is widely used the Presentation Function as slim TV machine, mobile phone etc.In recent years, along with lightweight, the slimming of portable sets such as mobile phone, wish a kind of liquid crystal indicator that is difficult to be subjected to from the display surface of the influence of external static electrification that has.Liquid crystal indicator is the structure that accompanies liquid crystal layer between the opposite electrode of the pixel electrode of substrate and counter substrate, the known TN mode that vertical generation electric field between substrate and counter substrate arranged, VA mode, MVA mode etc.The shortcoming of TN mode, VA mode is: if from oblique observation, then image is positive and negative anti-phase easily.The MVA mode has solved this shortcoming, but the shortcoming of MVA mode is: need to be provided with the orientation control area of not working as display part in pixel, transmissivity, aperture opening ratio reduce.For solving these shortcomings, for horizontal liquid crystal at the liquid crystal indicator of the lateral electric field type (IPS mode or FFS mode) that laterally produces electric field by more practicability.
Fig. 6 is the cut-open view of the liquid crystal indicator of lateral electric field type.Between counter substrate 51 and transparency carrier 52, accompany liquid crystal layer 54.Liquid crystal layer one side in counter substrate 51 forms color filter 53a, 53c and black matrix layer 53b.Liquid crystal layer one side at transparency carrier 52 forms show electrode 55a, 55c, public electrode 55b, 55d.These substrates 51,52 are clipped by 2 polarization plates 56,57.The liquid crystal molecule 58 on the surface of transparency carrier 52 utilizes not shown alignment films, is that the x direction is oriented shown in the right-hand part of Fig. 6 with respect to direction of an electric field.Left side half one of Fig. 6 represents to be applied with the state of voltage, and right side half one represents not to be applied with the state of voltage.If between show electrode 55a and public electrode 55b, apply voltage, then in liquid crystal layer, produce electric field at directions X.So, liquid crystal molecule 58 rotates in the surface of transparency carrier 52, towards direction of an electric field and unanimity.On the other hand, on the right side that electrode is not applied voltage, liquid crystal molecule does not rotate in the surface of transparency carrier 52, keeps original state.Consequently, in the deflection in the left side by being applied with voltage, the deflection on right side by not applying voltage, birefringence produces difference.This birefringent difference can be by polarization plate 56,57 as seen.
In the liquid crystal indicator of lateral electric field type, be not formed with electrode in the liquid crystal layer side of counter substrate 51.If apply static on the surface of transparency carrier 51, then owing to polarization plate 56, counter substrate 51 are insulators, therefore for example positive static can remain in the surface partly.Consequently, opposite polarity negative electric charge can be responded in the surface of counter substrate in liquid crystal layer 54 51 or color filter 53c.This electric charge can be upset liquid crystal molecular orientation, becomes the reason of color spot etc.In order to prevent this phenomenon, consider transparency electrode to be set on the surface of color filter 53a, 53c.But so, when producing electric field between show electrode 55a and public electrode 55b, owing to have equipotential plane at opposite side, electric field intensity or direction of an electric field can produce disorder, can't be shown uniformly.So, in the liquid crystal indicator of lateral electric field type, can't form electrode in liquid crystal layer one side of counter substrate 51.Therefore, as the static countermeasure, Japanese kokai publication hei 9-105918 communique (patent documentation 1) etc. has disclosed and has formed the structure of conductive layer with the surface of the liquid crystal layer opposition side of counter substrate 51.And TOHKEMY 2001-147441 communique (patent documentation 2), TOHKEMY 2008-209529 communique (patent documentation 3) have disclosed this conductive layer have been connected with framework, perhaps the method that is connected with ground connection via silver paste, conductive strips etc.
Fig. 7 is that expression uses conduction to bring the synoptic diagram of the liquid crystal indicator of the lateral electric field type of implementing the static countermeasure.Clamping has not shown liquid crystal between colour filtering chip basic board 1 and TFT substrate 2.Be formed with transparency conducting layer 3 on the surface of colour filtering chip basic board 1, dispose polarization plate 11 on it.In addition, circuit substrate 8 is connected with TFT substrate 2, is provided for the drive signal of drive TFT from circuit substrate 8.And conductive strips 19 are connected the ground connection of transparency conducting layer 3 with circuit substrate 8.In view of the above, the static that is applied to the surface of colour filtering chip basic board 1 is absorbed.
Yet, transparency conducting layer at the upper surface that is arranged on colour filtering chip basic board connects conductive component, and the static that will apply from the outside is to the structure that ground connection bleeds off, owing to connect the zone of usefulness or the thickness of conductive component etc., meeting such as the size of liquid crystal indicator, thickness increase.In addition, using optical cement cover glass, touch pad etc. to be fitted in the goods of display surface, the problem that exists is: owing to there is the conductive component (for example silver paste, conductive strips, metal framework) of display surface, so the adaptation of optics adhesives is relatively poor, decrease in yield or peel off etc.
Summary of the invention
Therefore, the objective of the invention is to simple reliable in structure bleed off the electric charge of static of being applied to liquid crystal indicator from the outside etc.
For achieving the above object, in the liquid crystal indicator of the present invention, ESD (Electrical-static-discharge, the static discharge) wiring that extends to the outside of encapsulant is formed at substrate.In the counter substrate of and holding liquid crystal opposed, be formed with conductive layer at the face of observer's one side (face of tossing about with liquid crystal phase) with substrate.On the limit of portion of terminal one side of substrate, the ESD wiring is electrically connected in the outside of encapsulant with the GND line of external circuit.On the other hand, with the different limit, limit of portion of terminal one side, be filled with conductive material at the outer side clearance of encapsulant.This conductive material is electrically connected the ESD wiring with the conductive layer of counter substrate.In view of the above, make, discharge to ground connection with the route of conductive layer, conductive material, ESD wiring, external circuit from external static electrification.
Under the situation of the structure that the ESD wiring is covered with dielectric film, do not form dielectric film in the zone that is connected with conductive material and external circuit, form ESD electrode and terminal electrode in this zone.By like this, ESD wiring and conductive material are electrically connected via the ESD electrode, and ESD connects up and external circuit is electrically connected via terminal electrode.
In addition, the manufacture method of liquid crystal indicator of the present invention contains: with ESD wiring, the ESD electrode that is electrically connected with the ESD wiring, be formed at the operation of substrate with the connect up terminal electrode that is electrically connected of ESD; Transparency conducting layer is formed at the operation of the upper surface of counter substrate; Inboard at ESD electrode and terminal electrode is provided with encapsulant, and substrate and counter substrate are fitted with having certain clearance, encloses the operation that liquid crystal is made liquid crystal panel in the gap; The 4th operation at the above-mentioned terminal electrode connecting circuit substrate of substrate; And by providing conductive material to the ESD electrode perimeter from the end of liquid crystal panel, the operation that transparency conducting layer and ESD electrode are electrically connected.Herein, conductive material can make the ESD electrode perimeter of the end of liquid crystal panel be immersed in low viscous conductive material solution such as organic conductive material solution and establish.At this moment, in making the operation of liquid crystal panel, also can use coated with protective film on polarization plate, after conductive material is set, peel off diaphragm.
Description of drawings
Fig. 1 is the schematic sectional view of the concrete example of expression liquid crystal indicator.
Fig. 2 is the diagrammatic top view of the concrete example of expression liquid crystal indicator.
Fig. 3 is the process chart of concrete example of the manufacture method of expression liquid crystal indicator.
Fig. 4 is the key diagram of an operation of specifically representing the manufacture method of liquid crystal indicator.
Fig. 5 is the schematic sectional view of the concrete example of expression liquid crystal indicator.
Fig. 6 is the cut-open view of the related liquid crystal indicator of known in the past lateral electric field type.
Fig. 7 is a cut-open view of representing the connection status of known in the past liquid crystal panel and circuit substrate.
Description of reference numerals
1 colour filtering chip basic board; The 2TFT substrate; 3 transparency conducting layers; 4 conductive materials (conductive member); The 5ESD transparency electrode; The 6ESD metal line; 7 terminal electrodes; 8 circuit substrates; 9 dielectric films; 10 encapsulants (containment member); Polarization plate on 11; 12 times polarization plates; 13 liquid crystal; 14IC; 15 apparatus for coating; Polarization plate diaphragm on 16; 17 cover glasses; 18 optical cements; 19 conductive strips.
Embodiment
Liquid crystal indicator of the present invention comprises: liquid crystal panel, the external circuit that is connected with the portion of terminal of liquid crystal panel.Liquid crystal panel is the structure that clamping has liquid crystal between substrate and counter substrate.Substrate and counter substrate utilize encapsulant to be fitted, and keep set gap.Counter substrate is configured in observer's one side, at observer's one side (upper surface) formation conductive layer of counter substrate.Preferably this conductive layer is formed at the whole surface of counter substrate upper surface.On the other hand, be formed with ESD wiring (static discharge with wiring) on the surface of the liquid crystal side of substrate.The ESD wiring extends to the outside of encapsulant.The portion of terminal of liquid crystal panel is formed on the substrate.And at the substrate of portion of terminal one side, the ESD wiring is electrically connected in the outside of encapsulant with the GND line of external circuit.And,, be filled with conductive material in the gap (between substrate and the counter substrate) in the outside of encapsulant on the limit different with the limit that portion of terminal is arranged.This conductive material is electrically connected with the ESD wiring.In addition, conductive material and conductive layer are provided with being touched.Utilize such structure, via conductive layer, conductive material, ESD wiring, discharged from the ground connection (GND) of circuit substrate from the static of observer's side.So, can protect liquid crystal indicator not to be subjected to from the influence of the static of outside intrusion.
The ESD wiring does not then need to be used for and other films that connects up and insulate if be formed at the outer circumferential side of the signal routing that drive signal is provided.But,, preferably cover with dielectric film in order to protect the ESD wiring.At this moment, need eliminate dielectric film in the part that is connected with conductive material and external circuit.In other words, need opening be set in the part that connects.Provide electric conductors such as nesa coating to this opening, form ESD electrode and terminal electrode.Like this, ESD wiring and conductive material are electrically connected via the ESD electrode, and ESD wiring and external circuit are electrically connected via terminal electrode.
Below, the manufacture method of such liquid crystal indicator is described.At first, the ESD electrode that ESD is connected up, is electrically connected with the ESD wiring, the terminal electrode that is electrically connected with the ESD wiring are formed at substrate.In addition, the upper surface in counter substrate forms conductive layer.Next, encapsulant is set, substrate and counter substrate are had fixing fitting with gap in the inboard of ESD electrode and terminal electrode.Then, enclose liquid crystal in this gap and make liquid crystal panel.And, circuit substrate is installed at the terminal electrode of substrate.In addition, provide conductive material from the end of liquid crystal panel, conductive layer and ESD electrode are electrically connected to the ESD electrode perimeter.
Also conductive material can be located at substrate and counter substrate the bight, be the bight of liquid crystal panel.In such structure, be immersed in the solution that is dispersed with conductive material by the bight that makes liquid crystal panel, can make conductive material to the infiltration of the gap of substrate and counter substrate, conductive layer is electrically connected with the ESD electrode.At this moment, be suitable for the mode that is immersed in low viscous conductive material solution such as organic conductive material solution.According to such manufacture method, can dwindle the dispensing area of conductive material, and form film, the use amount of cutting down conductive material.
In addition, the upper surface of conductive layer paste be provided with diaphragm on polarization plate, after making it be immersed in the solution and making conductive material infiltrate into the gap of substrate and counter substrate, peel off diaphragm.In view of the above, prevent that conductive material from exposing to the viewing area.
Herein, conductive layer applied for transparent conductive layer.In addition, form pixel electrode and public electrode, use under the situation of the liquid crystal panel that utilizes the lateral electric field type driving, more produce effect at substrate.That is, not only the static that applies from the outside can be bled off reliably, can also prevent because the display abnormality of the liquid crystal panel of generation of static electricity.
Below, specify the liquid crystal indicator that utilizes lateral electric field type to drive with reference to accompanying drawing.Owing to be lateral electric field type, therefore be formed with pixel electrode and public electrode, TFT element at substrate.
(concrete example 1)
Fig. 1 illustrates the cross section structure of the liquid crystal indicator of this concrete example.Express characteristic element herein.As shown in the figure, colour filtering chip basic board 1 and TFT substrate 2 are bonding via encapsulant 10, configuration liquid crystal 13 between these substrates.At the upper surface of colour filtering chip basic board 1, be not subjected to influence in order to protect liquid crystal etc. from external static electrification, transparency conducting layer 3 is arranged on whole surface.Each outside surface at transparency conducting layer 3 and TFT substrate 2 is provided with polarization plate 11 and following polarization plate 12.In addition, the portion of terminal at TFT substrate 2 is equipped with IC14.At the upper surface of TFT substrate 2, be liquid crystal face one side, form terminal electrode 7 in portion of terminal, terminal electrode 7 is connected with the circuit substrate 8 that is provided with ground connection (not shown).Upper surface at TFT substrate 2 is formed with ESD metal line 6.This ESD is insulated film 9 with metal line 6 and covers.At dielectric film 9 opening is arranged,, circuit substrate 8 and ESD are electrically connected with metal line 6 by terminal electrode 7 being set at this opening.As shown in the figure, in end conductive material 4 is set with the liquid crystal panel of this portion of terminal opposition side.Conductive material 4 is filled in the gap of two substrates 1,2 in the outside of encapsulant 10.In addition, conductive material 4 is set to not cover polarization plate up and down.Conductive material 4 also can be with the side or the surface of polarization plate contact up and down.In the outside of encapsulant 10, at dielectric film 9 opening is set, form ESD transparency electrode 5 at this opening.Via ESD transparency electrode 5 and conductive material 4, ESD is electrically connected with metal line 6 and transparency conducting layer 3.Like this, transparency conducting layer 3 is electrically connected with the ground connection of circuit substrate 8.
Fig. 2 is the vertical view of liquid crystal indicator shown in Figure 1, and Fig. 2 (a) is the vertical view of liquid crystal indicator, and Fig. 2 (b) is the vertical view of the TFT substrate of liquid crystal indicator.Shown in Fig. 2 (b), at TFT substrate 2, ESD with metal line 6, is arranged on the two ends that not have peripheral part that influences with transparency electrode 5 and ESD at display part.ESD is covered by not shown dielectric film with metal line 6.Utilization is carried out composition with dielectric film and the opening that forms, and ESD is electrically connected with transparency electrode 5 and terminal electrode 7 with metal line 6 and ESD.In addition, preferably ESD is arranged on the inboard of encapsulant 10 with metal line 6, perhaps is arranged under the encapsulant.
And, as shown in Figure 1, conductive material 4 is set comprising the zone of ESD with the periphery of transparency electrode 5.Shown in Fig. 2 (a), this conductive material 4 is located at angle part liquid crystal indicator and the limit portion of terminal opposition side.Utilize this conductive material 4, the transparency conducting layer 3 on the colour filtering chip basic board 1 is electrically connected with transparency electrode 5 with ESD on the TFT substrate 2.Therefore, liquid crystal indicator can make from external static electrification, and the route with transparency conducting layer 3, conductive material 4, ESD transparency electrode 5, ESD metal line 6, terminal electrode 7, circuit substrate 8 discharges to ground connection.
, preferably use the ITO material with transparency electrode 5, terminal electrode 7 herein, use metal materials such as Mo, Cr with metal line 6 at ESD at transparency conducting layer 3, ESD.
Next, the schematic cross-section of other structures as shown in Figure 5.Cover glass 17 utilizes optical cement 18 to be secured at the visible surface of liquid crystal indicator.If at the liquid crystal indicator sticking glass cover plate of the structure of above-mentioned Fig. 1, then the adaptation of optical cement improves, and can prevent peeling off of cover glass, improves reliability.In addition, use touch pad to replace cover glass too.
(concrete example 2)
Next, be the manufacture method that benchmark illustrates liquid crystal indicator with Fig. 3 and Fig. 4.Fig. 3 represents the manufacturing process of liquid crystal indicator.At first, form operation S1 (comprise and paste polarization plate), between TFT substrate bonding and colour filtering chip basic board, dispose liquid crystal, make liquid crystal panel via encapsulant at liquid crystal panel.Upper surface (face of liquid crystal side) at the TFT of this liquid crystal panel substrate, form terminal electrode in portion of terminal, forming the ESD transparency electrode with the end of portion of terminal opposition side, and formation ESD metal line that terminal electrode and ESD are electrically connected with transparency electrode.On the other hand, be formed with transparency conducting layer at the upper surface of colour filtering chip basic board (face of tossing about with liquid crystal phase).And, at the lower surface of TFT substrate polarization plate down is set, at the upper surface of transparency conducting layer polarization plate is set.At this moment, be pasted with the polarization plate diaphragm at last polarization plate.
Next, in IC/ circuit substrate installation procedure S2, the portion of terminal installation of driver on the TFT of liquid crystal panel substrate drives IC, the circuit substrate of usefulness.Circuit substrate is installed with terminal electrode with being connected.In addition, at circuit substrate ground connection is set.
And, in conductive material painting process S3, comprising the end coating conductive material of ESD with the liquid crystal panel of transparency electrode periphery.Behind the coating conductive material, in backlight assembling procedure S4, with the liquid crystal indicator backlight of packing into.Because conductive material is by the backlight frame protection, the damage that therefore can prevent to transport, processing etc. causes.
Use Fig. 4 to describe the coating process of conductive material in detail herein.Fig. 4 (a)～(c) is the figure of the coating process of the concrete conductive material of expression.In addition, at liquid crystal panel, in advance polarization plate diaphragm 16 is being set on the last polarization plate.Other structures of liquid crystal panel are identical with embodiment 1.
At first, shown in Fig. 4 (a), be used to be coated with the apparatus for coating 15 of conductive material, cover be provided with ESD with the zone of transparency electrode (not shown), be each angle opposite of liquid crystal indicator with portion of terminal one side.
Next, shown in Fig. 4 (b), discharge conductive material 4, be immersed in apparatus for coating 15 with TFT substrate 2, coating conductive material 4 by making transparency conducting layer 3 and last polarization plate diaphragm 16 from apparatus for coating 15.As conductive material 4, can adopt the low viscosity conductive material solution that has used organic conductive materials such as polythiophene, polyaniline.Like this, be immersed in the low viscosity conductive material solution that has used organic conductive materials such as polythiophene, polyaniline and be coated with conductive material 4 by one jiao the set zone that makes liquid crystal indicator, the gap infiltration of conductive material 4 to about about 3～5 μ m of colour filtering chip basic board 1 and TFT substrate 2.In addition, even the thickness of colour filtering chip basic board 1 is about 0.1～0.5mm, also can will easily be electrically connected with transparency electrode 5 three-dimensional ground from transparency conducting layer 3 to ESD.
Next, shown in Fig. 4 (c), will go up polarization plate diaphragm 16 and peel off from last polarization plate 11.Utilize such method,, therefore when coating conductive material 4,, also can avoid its influence even conductive material 4 is exposed on the polarization plate 11 or the viewing area because last polarization plate 11 and the strippable polarization plate diaphragm 16 gone up work as mask.In addition, can realize being used for the dwindling of dispensing area, the filming of the conductive material 4 that is connected with transparency conducting layer 3.
In addition, the operation that preferably is coated with conductive material is after pasting polarization plate, and enforcement after the operation that IC and circuit substrate are installed.As mentioned above, can utilize polarization plate 11 and last polarization plate diaphragm 16, avoid influences such as exposing of conductive material 4, realize being used for the dwindling of dispensing area, the filming of the conductive material 4 that is connected with transparency conducting layer 3 as mask.In addition, the operation by IC and circuit substrate will be installed was carried out before the operation of coating conductive material, can prevent from scar to occur at the conductive material 4 of the film that is made of organic conductive material etc.
In addition, in the operation of coating conductive material, also can use from nozzle ejection conductive material and make the ink-jetting style of film in the angle part of liquid crystal panel, be immersed in the mode of conductive material solution with the angle part that replaces making liquid crystal panel.
In addition, the liquid crystal indicator that has cover glass or touch pad shown in Figure 5 of embodiment 1 also can use the manufacture method of present embodiment.By using this manufacture method, can realize the dwindling of dispensing area of conductive material, the filming of conductive material, can improve the adaptation of optics adhesives and cover glass or touch pad etc., improve reliability, and improve the operation yield rate.
Claims (9)
1. a liquid crystal indicator is characterized in that, comprising:
Substrate is connected with external circuit in portion of terminal;
Counter substrate with described substrate arranged opposite, and is formed with conductive layer at upper surface;
Encapsulant makes described substrate and described counter substrate have set applying with gap;
Liquid crystal is enclosed described gap; And
The ESD wiring is formed at described substrate, and extends to the outside of described encapsulant,
On the limit of portion of terminal one side of described substrate, the GND line of described ESD wiring and described external circuit is in the electrical connection of the outside of described encapsulant,
With the different limit, limit of described portion of terminal one side, at the described gap filled conductive material in the outside of described encapsulant, this conductive material is electrically connected with described ESD wiring and described conductive layer.
2. liquid crystal indicator according to claim 1 is characterized in that,
Form pixel electrode and public electrode at described substrate, described liquid crystal is driven by lateral electric field type.
3. liquid crystal indicator according to claim 1 is characterized in that,
Comprise the dielectric film that covers described ESD wiring, and described dielectric film has opening in the zone that is connected with the GND line of described external circuit with the zone that is connected with described conductive material, utilization provides electric conductor formation terminal electrode and the ESD electrode to this opening,
The GND line of described ESD wiring and described external circuit utilizes described terminal electrode to be electrically connected, and described ESD wiring and described conductive material utilize described ESD electrode to be electrically connected.
4. liquid crystal indicator according to claim 1 is characterized in that,
Described conductive layer is transparent.
5. according to each described liquid crystal indicator in the claim 1～4, it is characterized in that,
Described conductive material is located at the bight of described substrate and described counter substrate.
6. liquid crystal indicator according to claim 5 is characterized in that,
Described conductive material is the organic conductive material that contains the transparency of polythiophene, polyaniline.
7. the manufacture method of a liquid crystal indicator, contain:
With ESD wiring, the ESD electrode that is electrically connected with described ESD wiring, be formed at first operation of substrate with the connect up terminal electrode that is electrically connected of described ESD;
Transparency conducting layer is formed at second operation of the upper surface of counter substrate;
Inboard at described ESD electrode and described terminal electrode is provided with encapsulant, makes described substrate and described counter substrate have fixing applying with gap, encloses the 3rd operation that liquid crystal is made liquid crystal panel to described gap;
The 4th operation at the described terminal electrode connecting circuit substrate of described substrate; And
By providing conductive material from the end of described liquid crystal panel to described ESD electrode perimeter, the 5th operation that described transparency conducting layer and described ESD electrode are electrically connected.
8. the manufacture method of liquid crystal indicator according to claim 7 is characterized in that,
Described the 5th operation is to be immersed in the solution that is dispersed with described conductive material by the bight that makes described liquid crystal panel, make described conductive material to the infiltration of the gap of described substrate and described counter substrate, the operation that described transparency conducting layer is electrically connected with described ESD electrode.
9. according to the manufacture method of claim 7 or 8 described liquid crystal indicators, it is characterized in that,
The upper surface of described transparency conducting layer paste be provided with diaphragm on polarization plate, and after described the 5th operation, peel off described diaphragm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-035234 | 2010-02-19 | ||
| JP2010035234A JP2011170200A (en) | 2010-02-19 | 2010-02-19 | Liquid crystal device and method of manufacturing liquid crystal device |
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| Publication Number | Publication Date |
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| CN102162941A true CN102162941A (en) | 2011-08-24 |
| CN102162941B CN102162941B (en) | 2015-06-17 |
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| CN201110044045.5A Expired - Fee Related CN102162941B (en) | 2010-02-19 | 2011-02-18 | Liquid crystal display device and manufacturing method thereof |
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| Country | Link |
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| JP (1) | JP2011170200A (en) |
| KR (1) | KR101788873B1 (en) |
| CN (1) | CN102162941B (en) |
| TW (1) | TW201142446A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20110095818A (en) | 2011-08-25 |
| TW201142446A (en) | 2011-12-01 |
| JP2011170200A (en) | 2011-09-01 |
| KR101788873B1 (en) | 2017-11-15 |
| CN102162941B (en) | 2015-06-17 |
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