CN106405959A - Electrostatic protection structure of liquid crystal panel - Google Patents

Electrostatic protection structure of liquid crystal panel Download PDF

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Publication number
CN106405959A
CN106405959A CN201610899715.4A CN201610899715A CN106405959A CN 106405959 A CN106405959 A CN 106405959A CN 201610899715 A CN201610899715 A CN 201610899715A CN 106405959 A CN106405959 A CN 106405959A
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China
Prior art keywords
metal routing
metal
gnd
routing
gap
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Granted
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CN201610899715.4A
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Chinese (zh)
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CN106405959B (en
Inventor
李亚锋
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to CN201610899715.4A priority Critical patent/CN106405959B/en
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136204Arrangements to prevent high voltage or static electricity failures
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/1368Active matrix addressed cells in which the switching element is a three-electrode device

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention provides an electrostatic protection structure of a liquid crystal panel by aiming at the problem that static electricity cannot be well released when electrostatic voltage of a GND metal routing is extremely high in the prior art. The electrostatic protection structure of the liquid crystal panel comprises a plurality of arrayed GND metal routings, wherein two adjacent sides of every two adjacent GND metal routings are respectively connected with a third metal routing or a fourth metal routing; each GND metal routing at each of four corners of a GND metal routing array is connected with a second metal routing arranged at the periphery of the array through a fifth metal routing or a sixth metal routing, so that all the metal routings are connected to form a large GND network, and the electrostatic tolerance voltage is increased to a certain extent; and meanwhile, the third metal routing and the fourth metal routing are doped polycrystalline silicon, so that the release of the static electricity is accelerated, and the static electricity release time is shortened.

Description

A kind of electrostatic protection structure of liquid crystal panel
Technical field
The present invention relates to liquid crystal panel field, more particularly, to a kind of electrostatic protection structure of liquid crystal panel.
Background technology
Low temperature polycrystalline silicon has the advantages that high mobility, therefore when carrying out pixel design, thin film transistor (TFT) TFT switch The very little that W/L can design, thus the corresponding aperture opening ratio of pixel is relatively just relatively high, therefore low temperature polycrystalline silicon liquid crystal panel has Greatly market competition advantage.
TFT-LCD can be divided into polysilicon (Poly-Si TFT) and non-crystalline silicon (a-Si TFT), and both difference is electricity crystalline substance Bulk properties is different.Ordered state in a crystal grain (Grain) for the molecular structure of polysilicon is neat and directive, because This electron mobility is faster 200-300 times than arranging mixed and disorderly non-crystalline silicon;Typically alleged TFT-LCD refers to non-crystalline silicon, technology Maturation, is the main product of LCD.And polysilicon product then mainly comprise high temperature polysilicon (HTPS) and low temperature polycrystalline silicon (LTPS) two Plant product.
Low temperature polycrystalline silicon (Low Temperature Poly-silicon;Abbreviation LTPS) Thin Film Transistor-LCD In encapsulation process, by the use of quasi-molecule radium-shine as thermal source, laser light, after projection system, can produce energy and be uniformly distributed Radium-shine light beam, be projeced on the glass substrate of amorphous silicon structures, when amorphous silicon structures glass substrate absorb quasi-molecule radium-shine After energy, polysilicon structure can be transformed into, because whole processing procedure is all accomplished below at 600 DEG C, therefore general glass substrate All applicable.
LTPS-TFT LCD has the advantages that high-resolution, response speed be fast, high brightness, high aperture, add due to The silicon crystalline arrangement of LTPS-TFT LCD compared with a-Si orderliness so that electron mobility is relatively high more than 100 times, can be by periphery Drive circuit makes on the glass substrate simultaneously, reaches target, save space and the cost driving IC of system combination.
In the design process, GND metal routing is enclosed in four weekly assembly settings one of array base palte to LTPS-TFT LCD 11, such as Fig. 1, GND metal routing 11, GOA drives area 12, Display panel area 13, and GND metal routing 11 is arranged on the surrounding of panel Edge, the purpose of setting GND metal routing 11 is when there being electrostatic potential to produce, and can quickly will by GND metal routing Electro-static Driven Comb falls, and prevents electrostatic from adding up and causing inside counter plate to wound, impact display.But this GND metal routing release is quiet The function of electricity is limited, when electrostatic potential is too high, can cause wound of GND metal routing, or even impact internal wiring, makes Become display bad.
Content of the invention
In order to strengthen the releasability of electrostatic to a certain extent, the present invention proposes a kind of electrostatic defending knot of liquid crystal panel Structure.
The electrostatic protection structure of liquid crystal panel proposed by the present invention, including GND metal routing, the second metal routing, the 5th Metal routing, the 6th metal routing, wherein
Described GND metal routing is closed circuit structure, and the outward flange along array base palte is arranged,
Described second metal routing is arranged on the outside of described GND metal routing, described second metal routing and described GND Between the outward flange of metal routing, there is gap,
Described second metal routing passes through fifth metal cabling and/or the 6th metal routing phase with described GND metal routing Even.
This electrostatic protection structure, indirectly increase GND metal routing metal width, reduce GND metal routing Resistance, enhance the pressure amount of electrostatic of GND metal routing, reduce the risk that electrostatic wounds.
As to further improvement of the present invention, multiple described GND metal routings are arranged in the way of rectangular array, described The row of rectangular array extend in a first direction, and the row of described rectangular array extends in a second direction, described first direction and described Second direction is mutually perpendicular to, and is provided with the first gap between adjacent two row of described rectangular array, and adjacent the two of described rectangular array In the ranks it is provided with the second gap.
Further, the adjacent both sides of the GND metal routing of adjacent two row are connected by the 3rd metal routing, described 3rd gold medal Belong to cabling to extend in a second direction, described 3rd metal routing is arranged in described first gap, described 3rd metal routing Length is equal with the width in described first gap.Two ends on the adjacent both sides of the GND metal routing of described adjacent two row Place is respectively connected with described 3rd metal routing.
Further, the adjacent both sides of the GND metal routing of adjacent rows are connected by the 4th metal routing, described 4th gold medal Belong to cabling to extend in a first direction, described 4th metal routing is arranged in described second gap, described 4th metal routing Length is equal with the width in described second gap.Two ends on the adjacent both sides of the GND metal routing of described adjacent rows Place is respectively connected with described 4th metal routing.
Such structure makes multiple GND metal routings connect into a huge wire netting, increased the release of electrostatic Path, accelerates the release of electrostatic.
As to further improvement of the present invention, the rectangle of described second metal routing and the plurality of GND metal routing It is provided with third space and the 4th gap, described third space extends along described first direction, described between the outward flange of array 4th gap extends along described second direction, the GND metal of four edges of the rectangular array of the plurality of GND metal routing Cabling is passed through fifth metal cabling and/or the 6th metal routing respectively and is connected with the second metal routing, and fifth metal cabling is along the One direction extends, and the 6th metal routing extends in a second direction, and described 6th metal routing is arranged in described third space, institute The length stating the 6th metal routing is equal with the width of described third space;Described fifth metal cabling is arranged at the 4th gap Interior, the length of described fifth metal cabling is equal with the width in described 4th gap.
In outside setting second metal routing of the multiple GND metal routings arranging in array, and make multiple GND metals Cabling is connected with the second metal routing, defines a huge GND wire netting, has further speeded up the release of electrostatic, improves The dosis tolerata of electrostatic potential.
As to further improvement of the present invention, in the first trip of described rectangular array and tail row, the GND metal of non-end is walked Line is connected with described second metal routing by described fifth metal cabling respectively.First of described rectangular array is non-with tail row The GND metal routing of end is connected with described second metal routing by described 6th metal routing respectively.Thus it is so that middle GND metal routing on electrostatic quickly pass through the second metal routing release.
At least one of described the 3rd metal routing, the 4th metal routing, fifth metal cabling, the 6th metal routing gold Belong to cabling to be made up of low temperature polycrystalline silicon.Ordered state in a crystal grain for the molecular structure of low temperature polycrystalline silicon is neat and the side of having Tropism, therefore its electron mobility is very fast, faster than non-crystalline silicon 200~300 times, so the use of doping low temperature polycrystalline silicon Further enhancing the rate of release of electrostatic, improve the releasability of electrostatic.
The electrostatic protection structure of liquid crystal panel proposed by the present invention, is equally applicable during LCD processing procedure, and prevention is sent out Raw electrostatic breakdown phenomenon, by TFT periphery setting metal line, being formed for Electro-static Driven Comb path in TFT processing procedure front half section, fall Low local current intensity, reduces the risk that electrostatic wounds.
Brief description
Hereinafter will be based on embodiment and refer to the attached drawing is being described in more detail to the present invention.Wherein:
GND metal routing structural representation in Fig. 1 display prior art;
Electrostatic protection structure schematic diagram containing two GND metal routings in Fig. 2 display embodiment;
Fig. 3 shows the electrostatic protection structure schematic diagram arranging GND metal routing in embodiment containing three row three;
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to actual ratio.
Specific embodiment
To describe the specific embodiment of the present invention below in conjunction with drawings and Examples in detail.
The terms such as the horizontal direction in embodiment, vertical direction, end are the directions of the position with respect to picture it is impossible to manage Solve as limitation of the present invention.
As fig. 2 shows in the present invention, the electrostatic protection structure schematic diagram that two GND metal routings 11 are constituted.Two Adjacent GND metal routing 11 is arranged as a line two row, and the direction along described row is second direction, first direction and described second Direction is vertical, has the first gap 27, the phase of the GND metal routing 11 of adjacent two row between the GND metal routing of adjacent two row Two ends on adjacent both sides are all connected by the 3rd metal routing 23, thus two GND metal routings 11 are connected as one, Meanwhile, the 3rd metal routing 23 is located in the first gap 27, the width phase in the length of the 3rd metal routing 23 and the first gap 27 Deng it is ensured that shortest path when electrostatic transmits between two GND metal routings 11, shorten the time of Electro-static Driven Comb.
The outside of two GND metal routings 11 is provided with the second metal routing 22, the second metal routing 22 and described two The outward flange of individual GND metal routing 11 has the third space 29 extending in a first direction, the 4th extending in a second direction respectively Gap 30, preferably third space 29 are equal with the width in the 4th gap 30, when width is equal, are more beneficial for connecting up and real Apply.Four edges of the second metal routing 22 pass through fifth metal cabling 25 or the 6th metal routing 26 and GND metal respectively Cabling 11 is connected, and the 6th metal routing 26 is located in third space 29 and extends in a second direction, the 6th metal routing 26 Length is equal with the width of third space 29, and fifth metal cabling 25 is located in the 4th gap 30 and extends in a first direction, the The length of five metal routings 25 is equal with the width in the 4th gap 30 it is ensured that electrostatic is in GND metal routing 11 and the second metal Shortest path when transmitting between cabling 22, shortens the time of Electro-static Driven Comb.
Fig. 3 is the rectangular array that 9 GND metal routings 11 are arranged in three row three row, and the row of described rectangular array are along first Direction extends, and the row of described rectangular array extends in a second direction, and described first direction and described second direction are mutually perpendicular to, institute It is provided with the first gap 27 extending in a first direction, the adjacent rows of described rectangular array between adjacent two row stating rectangular array Between be provided with the second gap 28 extending in a second direction.
Two ends on the adjacent both sides of GND metal routing between adjacent two row are all connected by the 3rd metal routing 23, Two ends on the adjacent both sides of the GND metal routing between adjacent rows are all connected by the 4th metal routing 24, thus by institute Some GND metal routings 11 are connected as an entirety, and meanwhile, the 3rd metal routing 23 is located in the first gap 27, the 3rd metal The length of cabling 23 is equal with the width in the first gap 27, and the 4th metal routing 24 is located in the second gap 28, and the 4th metal is walked The length of line 27 is equal with the width in the second gap 28, and the preferably first gap 27 is equal with the width in the second gap 28, more saves Save space, makes the metal routing length between gap equal with gap width it is ensured that electrostatic is in adjacent GND metal routing simultaneously Shortest path when transmitting between 11, shortens the time of Electro-static Driven Comb.
The periphery arranging GND metal routing 11 in three row three is provided with the second metal routing 22, the second metal routing 22 and institute The outward flange stating GND metal routing 11 array has the third space 29 that extends in a first direction respectively, extends in a second direction 4th gap 30, preferably third space 29 are equal with the width in the 4th gap 30, when width is equal, be more beneficial for wiring and Implement.Four edges of the second metal routing 22 pass through fifth metal cabling 25 or the 6th metal routing 26 and GND gold respectively Belong to cabling 11 to be connected, the 6th metal routing 26 is located in third space 29 and extends along described second direction, and the 6th metal is walked The length of line 26 is equal with the width of third space 29, and fifth metal cabling 25 is located in the 4th gap 30 and along described first party To extension, the length of fifth metal cabling 25 equal with the width in the 4th gap 30 it is ensured that electrostatic in GND metal routing 11 and Shortest path when transmitting between the second metal routing 22, shortens the time of Electro-static Driven Comb.
GND metal routing 11 positioned at first trip and the non-end of tail row is again by fifth metal cabling 25 and the second metal Cabling 22 is connected, and the GND metal routing 11 of the non-end arranging with tail positioned at first is again by the 6th metal routing 26 and second Metal routing 22 is connected, and thus with the second metal routing 22 of periphery, the array that GND metal routing is formed is connected into one Individual big GND wire netting, adds somewhat to the withstanding voltage of electrostatic, advantageously in the release of electrostatic.
In preferably the 3rd metal routing 23, the 4th metal routing 24, fifth metal cabling 25, the 6th metal routing 26 extremely Few one kind is made up of low temperature polycrystalline silicon, due to the ordered state in a crystal grain for the molecular structure of low temperature polycrystalline silicon be neat and Directive, therefore its electron mobility is very fast, faster than non-crystalline silicon 200~300 times, so doping low temperature polycrystalline silicon Using the rate of release that further enhancing electrostatic, improve the releasability of electrostatic.
Finally illustrate, above example is merely to illustrate technical scheme and unrestricted, although with reference to relatively Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this In the middle of the right of invention.

Claims (10)

1. a kind of electrostatic protection structure of liquid crystal panel, including GND metal routing, the second metal routing, fifth metal cabling, Six metal routings, wherein
Described GND metal routing is closed circuit structure, and the outward flange along array base palte is arranged,
Described second metal routing is arranged on the outside of described GND metal routing, described second metal routing and described GND metal Between the outward flange of cabling, there is gap,
Described second metal routing is connected by fifth metal cabling and/or the 6th metal routing with described GND metal routing.
2. electrostatic protection structure according to claim 1 is it is characterised in that multiple described GND metal routing is with rectangle battle array The mode of row is arranged, and the row of described rectangular array extend in a first direction, and the row of described rectangular array extends in a second direction, institute State first direction and described second direction is mutually perpendicular to, between adjacent two row of described rectangular array, be provided with the first gap, described It is provided with the second gap between the adjacent rows of rectangular array.
3. electrostatic protection structure according to claim 2 it is characterised in that adjacent two row GND metal routings adjacent Both sides are passed through the 3rd metal routing and are connected, and described 3rd metal routing extends in a second direction, described 3rd metal routing setting In described first gap, the length of described 3rd metal routing is equal with the width in described first gap.
4. electrostatic protection structure according to claim 3 it is characterised in that described adjacent two row GND metal routings Two ends on adjacent both sides be respectively connected with described 3rd metal routing.
5. electrostatic protection structure according to claim 2 it is characterised in that the GND metal routing of adjacent rows adjacent Both sides are passed through the 4th metal routing and are connected, and described 4th metal routing extends in a first direction, described 4th metal routing setting In described second gap, the length of described 4th metal routing is equal with the width in described second gap.
6. electrostatic protection structure according to claim 5 is it is characterised in that GND metal routing in described adjacent rows Two ends on adjacent both sides be respectively connected with described 4th metal routing.
7. electrostatic protection structure according to claim 2 it is characterised in that described second metal routing with the plurality of It is provided with third space and the 4th gap, described third space is along described between the outward flange of the rectangular array of GND metal routing First direction extends, and described 4th gap extends along described second direction, and the four of the rectangular array of the plurality of GND metal routing The GND metal routing of individual edge passes through fifth metal cabling respectively and/or the 6th metal routing is connected with the second metal routing, Fifth metal cabling extends in a first direction, and the 6th metal routing extends in a second direction, and described 6th metal routing is arranged at In described third space, the length of described 6th metal routing is equal with the width of described third space;Described fifth metal is walked Line is arranged in the 4th gap, and the length of described fifth metal cabling is equal with the width in described 4th gap.
8. electrostatic protection structure according to claim 3 is it is characterised in that non-in the first trip of described rectangular array and tail row The GND metal routing of end is connected with described second metal routing by described fifth metal cabling respectively.
9. electrostatic protection structure according to claim 3 is it is characterised in that first of described rectangular array is non-with tail row The GND metal routing of end is connected with described second metal routing by described 6th metal routing respectively.
10. according to the arbitrary described electrostatic protection structure of claim 3,4,6 it is characterised in that the 3rd described metal routing, At least one of 4th metal routing, fifth metal cabling, the 6th metal routing are made up of low temperature polycrystalline silicon.
CN201610899715.4A 2016-10-13 2016-10-13 A kind of electrostatic protection structure of liquid crystal display panel Active CN106405959B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825821A (en) * 2008-12-26 2010-09-08 乐金显示有限公司 Mother substrate for liquid crystal display device and method of fabricating the same
CN103926719A (en) * 2014-04-25 2014-07-16 友达光电股份有限公司 Display panel with electrostatic protection function
CN104701303A (en) * 2015-03-30 2015-06-10 京东方科技集团股份有限公司 Display device, array substrate and manufacturing method thereof
CN105097847A (en) * 2015-09-15 2015-11-25 京东方科技集团股份有限公司 Array substrate, display panel and display device
CN204906858U (en) * 2015-09-18 2015-12-23 江西合力泰科技有限公司 Flexible line way board of display module assembly
CN105320337A (en) * 2014-07-29 2016-02-10 南京瀚宇彩欣科技有限责任公司 Electrostatic protection structure and circuit substrate with same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825821A (en) * 2008-12-26 2010-09-08 乐金显示有限公司 Mother substrate for liquid crystal display device and method of fabricating the same
CN103926719A (en) * 2014-04-25 2014-07-16 友达光电股份有限公司 Display panel with electrostatic protection function
CN105320337A (en) * 2014-07-29 2016-02-10 南京瀚宇彩欣科技有限责任公司 Electrostatic protection structure and circuit substrate with same
CN104701303A (en) * 2015-03-30 2015-06-10 京东方科技集团股份有限公司 Display device, array substrate and manufacturing method thereof
CN105097847A (en) * 2015-09-15 2015-11-25 京东方科技集团股份有限公司 Array substrate, display panel and display device
CN204906858U (en) * 2015-09-18 2015-12-23 江西合力泰科技有限公司 Flexible line way board of display module assembly

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