CN105404035A - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
- Publication number
- CN105404035A CN105404035A CN201510895850.7A CN201510895850A CN105404035A CN 105404035 A CN105404035 A CN 105404035A CN 201510895850 A CN201510895850 A CN 201510895850A CN 105404035 A CN105404035 A CN 105404035A
- Authority
- CN
- China
- Prior art keywords
- circuit unit
- electronic circuit
- display panels
- terminal
- protection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 230000003068 static effect Effects 0.000 abstract description 14
- 230000001681 protective effect Effects 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
- ALDJIKXAHSDLLB-UHFFFAOYSA-N 1,2-dichloro-3-(2,5-dichlorophenyl)benzene Chemical compound ClC1=CC=C(Cl)C(C=2C(=C(Cl)C=CC=2)Cl)=C1 ALDJIKXAHSDLLB-UHFFFAOYSA-N 0.000 description 4
- 238000001467 acupuncture Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention provides a liquid crystal display panel comprising a testing end, a static protective circuit and a ground end. The testing end is formed by a plurality of testing pads; the static protective circuit is formed by a plurality of protective circuit units; the plurality of testing pads and the plurality of protective circuit units are in one-to-one corresponding connection; one end of each protective circuit unit is connected with the corresponding testing pad and the other end is connected with the ground end; and each protective circuit unit consists of one or a plurality of sub-circuit units. Electrostatic discharge of the liquid crystal display panel does not pass through the interior of the liquid crystal panel, so damage of the electrostatic discharge can be reduced.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of display panels.
Background technology
At present, static discharge (Electro-StaticDischarge, ESD) has become the one harm of electronic product and equipment, causes the dysfunction even parts damages of electronic product and equipment.Especially, often can there is the problem of damage by static electricity in the display panel of some small size GIA types (GateInArray is integrated on array base palte by gate drivers).
When display panels suffers electrostatic discharge shock, be arranged on electrostatic discharge protection circuit on display panels can by electrostatic dispersion, weaken, with element and the circuit of avoiding electrostatic directly to impact inside, viewing area.Please refer to Fig. 1, Fig. 1 is the electrical block diagram of a kind of display panels of the prior art.As shown in Figure 1, this display panels 10 comprises test lead 11, electrostatic discharge protection circuit 12 and public electrode 13, this test lead 11 comprises the first testing cushion A1, second testing cushion A2, N testing cushion An, this electrostatic discharge protection circuit 12 comprises the first protection circuit unit B 1, second protection circuit unit B 2, N protection circuit unit B n, multiple testing cushion (A1 of this test lead 11, A2, An) with multiple protection circuit unit (B1 of this electrostatic discharge protection circuit 12, B2, Bn) connect one to one, as: this first testing cushion A1 is connected with this first protection circuit unit B 1, this second testing cushion A2 is connected with this second protection circuit unit B 2, this N testing cushion An is connected with this N protection circuit unit B n.
In test process, when acupuncture treatment or abnormal signal time, big current can be produced instantaneously, and according to the design of this electrostatic discharge protection circuit 12, the protection circuit unit of the correspondence that these big current can be connected by this test lead 11 is diverted in this public electrode 13, if but excessive the having little time of immediate current discharges, then may be poured in this electrostatic discharge protection circuit 12 through this public electrode 13 is counter, and according to shortest path, puncture the thin film transistor (TFT) in the array base palte of display panels 10, even enter the place of sweep trace and data line intersection by cabling and blow herein, cause the bad even picture of display screen line abnormal and cause display panels 10 to be scrapped.
Summary of the invention
Object of the present invention comprises provides a kind of display panels, effectively can reduce the infringement that the static discharge existing for current product causes.
Particularly, embodiments of the invention provide a kind of display panels, described display panels comprises test lead, electrostatic discharge protection circuit and earth terminal, described test lead comprises multiple testing cushion, described electrostatic discharge protection circuit comprises multiple protection circuit unit, described multiple testing cushion and multiple protection circuit unit connect one to one, one end of each protection circuit unit connects with a corresponding testing cushion, the other end is connected with described earth terminal, each protection circuit unit comprises one or more electronic circuit unit, each electronic circuit unit comprises the first on-off element and second switch element, described first on-off element comprises the first control end, first path terminal and alternate path end, described second switch element comprises the second control end, third path end and the 4th path terminal, described first control end connects the input end of described electronic circuit unit, described first path terminal is connected with described first control end, described alternate path end is connected with the output terminal of described second control end and described electronic circuit unit, described third path end is connected with described first path terminal, described 4th path terminal is connected with the output terminal of described second control end and described electronic circuit unit.
Preferably, described multiple electronic circuit units in series connects.
Preferably, the input end of first sub-circuit unit in described multiple electronic circuit unit connects with corresponding testing cushion, the input end of the electronic circuit unit that the output terminal of described first sub-circuit unit is adjacent with the next one is connected, the input end of last electronic circuit unit is connected with the output terminal of a upper adjacent electronic circuit unit, and the output terminal of last electronic circuit unit is connected with described earth terminal.
Preferably, if each protection circuit unit only comprises a sub-circuit unit, the input end of described electronic circuit unit connects with corresponding testing cushion, and the output terminal of described electronic circuit unit is connected with described earth terminal.
Preferably, described earth terminal connects a lighting jig, and by described lighting jig ground connection.
Preferably, described earth terminal connects a flexible PCB, and by described flexible circuit plate earthing.
Due to the display panels that the embodiment of the present invention provides, static discharge is consumed by opening multiple first on-off element, again by the earth terminal release electrostatic of display panels, and pass through the setting of second switch element, make the big current of static discharge instead can not be poured into the inside of display panels, thus effective infringement reducing static discharge and cause.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of a kind of display panels of the prior art.
The electrical block diagram of a kind of display panels that Fig. 2 provides for first embodiment of the invention.
The electrical block diagram of the protection circuit unit that Fig. 3 is the display panels shown in Fig. 2.
The electrical block diagram of a kind of display panels that Fig. 4 provides for second embodiment of the invention.
The electrical block diagram of a kind of display panels that Fig. 5 provides for third embodiment of the invention.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the display panels proposed according to the present invention and embodiment, method, step, structure, feature and effect, be described in detail as follows.
Aforementioned and other technology contents, feature and effect for the present invention, can clearly present in the detailed description of following cooperation with reference to graphic preferred embodiment.By the explanation of embodiment, when can to the present invention for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
Please refer to Fig. 2, the electrical block diagram of a kind of display panels that Fig. 2 provides for first embodiment of the invention.As shown in Figure 2, this display panels 20 comprises test lead 21, electrostatic discharge protection circuit 22 and earth terminal 23, this test lead 21 comprises the first testing cushion A1, second testing cushion A2, N testing cushion An, this electrostatic discharge protection circuit 22 comprises the first protection circuit unit B 1, second protection circuit unit B 2, N protection circuit unit B n, multiple testing cushion (A1 of this test lead 21, A2, An) with multiple protection circuit unit (B1 of this electrostatic discharge protection circuit 22, B2, Bn) connect one to one, as: this first testing cushion A1 is connected with this first protection circuit unit B 1, this second testing cushion A2 is connected with this second protection circuit unit B 2, this N testing cushion An and this N protection circuit unit B n.
In the present embodiment, one end of each protection circuit unit connects with a corresponding testing cushion, the other end is connected with earth terminal 23, and the one end as the first protection circuit unit B 1 is connected with this first testing cushion A1, and the other end of this first protection circuit unit B 1 is connected with this earth terminal 23.
Please refer to Fig. 3, Fig. 3 is the electrical block diagram of a protection circuit unit.Each protective unit comprises one or more electronic circuit unit, still be described for the first protection circuit unit B 1, as shown in Figure 3, in the present embodiment, this the first protection circuit unit B 1 comprises multiple electronic circuit unit 220 be connected in series, and the input end of the first electronic circuit unit 220 is connected with the first testing cushion A1, and the output terminal of last electronic circuit unit 220 is connected with earth terminal 23.Wherein, each electronic circuit unit 220 comprises the first on-off element T1 and second switch elements T 2, this first on-off element T1 comprises the first control end 2210, first path terminal 2211 and alternate path end 2212, this second switch elements T 2 comprises the second control end 2220, third path end 2221 and the 4th path terminal 2222, this the first control end 2210 connects the input end of this electronic circuit unit 220, this first path terminal 2211 is connected with this first control end 2210, this alternate path end 2212 is connected with the output terminal of this second control end 2220 and this electronic circuit unit 220, this third path end 2221 is connected with this first path terminal 2211, 4th path terminal 2222 is connected with the output terminal of this second control end 2220 and this electronic circuit unit 220.If this electronic circuit unit 220 is not first, then the input end of this electronic circuit unit 220 is connected with the output terminal of a upper adjacent electronic circuit unit 220, if this electronic circuit unit 220 is first, then the input end of this electronic circuit unit 220 is connected with this first testing cushion A1, and the input end of the electronic circuit unit 220 that the output terminal of this electronic circuit unit 220 is adjacent with the next one is connected.If this electronic circuit unit 220 is not last, then the input end of this electronic circuit unit 220 is connected with the output terminal of a upper adjacent electronic circuit unit 220, the input end of the electronic circuit unit 220 that the output terminal of this electronic circuit unit 220 is adjacent with the next one is connected, if this electronic circuit unit 220 is last, then the input end of this electronic circuit unit 220 is connected with the output terminal of a upper adjacent electronic circuit unit 220, and the output terminal of this electronic circuit unit 220 is connected with this earth terminal 23.In other embodiments, this first protection circuit unit B 1 comprises a sub-circuit unit, and the input end of this electronic circuit unit is connected with the first testing cushion A1, and the output terminal of this electronic circuit unit is connected with this earth terminal 23.
Refer again to Fig. 3, in the process that this display panels 20 is tested, when acupuncture treatment or abnormal signal time, as produced big current instantaneously because of static discharge, this big current flows through the input end of this first electronic circuit unit 220 by this first testing cushion A1, open the first on-off element T1 of the first electronic circuit unit 220, and the first on-off element T1 of the second electronic circuit unit 220 is opened by the first on-off element T1 of the first electronic circuit unit 220, the rest may be inferred, until open the first on-off element T1 of last electronic circuit unit 220, and via the output head grounding of last electronic circuit unit 220, this big current is discharged by this earth terminal 23.This big current is consumed by opening multiple first on-off element T1, discharged by the earth terminal 23 of this display panels 20 again, and pass through the setting of the second switch elements T 2 of each electronic circuit unit 220, make big current instead can not be poured into the inside of display panels 20, effectively can reduce the infringement that static discharge causes.
Please refer to Fig. 4, the electrical block diagram of a kind of display panels that Fig. 4 provides for second embodiment of the invention.As shown in Figure 4, this display panels 30 is similar to this display panels 20, and difference is, the earth terminal 33 of this display panels 30 connects a lighting jig 34, and by this lighting jig 34 ground connection.
In the present embodiment, when test process, because of processing procedure, as: acupuncture treatment or abnormal signal produce big current instantaneously, this big current flows through this electrostatic discharge protection circuit 32 by the test lead 31 of this display panels 30, is diverted to the earth terminal 33 of this display panels 30, then is diverted to this lighting jig 34, due to this lighting jig 34 ground connection, big current is discharged by this lighting jig 34.The static discharge of this display panels 30 through the inside of display panels, can not effectively can reduce the infringement that static discharge causes.
Please refer to Fig. 5, the electrical block diagram of a kind of display panels that Fig. 5 provides for third embodiment of the invention.As shown in Figure 5, this display panels 40 is similar to this display panels 20, and difference is, the earth terminal 43 of this display panels 40 connects a flexible PCB (FPC) 44, by this flexible PCB 44 ground connection.
In the present embodiment, when test process, because of processing procedure, as: acupuncture treatment or abnormal signal produce big current instantaneously, this big current flows through this electrostatic discharge protection circuit unit 42 by the test lead 41 of this display panels 40, is diverted to the earth terminal 43 of this display panels 40, then is diverted to this flexible PCB 44, due to this flexible PCB 44 ground connection, big current is discharged by this flexible PCB 44.The static discharge of this display panels 40 through the inside of display panels, can not effectively can reduce the infringement that static discharge causes.
The foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; any those skilled in the art; do not departing within the scope of technical solution of the present invention; a little change or modification etc. are made when above-mentioned disclosed technology contents can be utilized; all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a display panels, it is characterized in that, described display panels comprises test lead, electrostatic discharge protection circuit and earth terminal, described test lead comprises multiple testing cushion, described electrostatic discharge protection circuit comprises multiple protection circuit unit, described multiple testing cushion and multiple protection circuit unit connect one to one, one end of each protection circuit unit connects with a corresponding testing cushion, the other end is connected with described earth terminal, each protection circuit unit comprises one or more electronic circuit unit, each electronic circuit unit comprises the first on-off element and second switch element, described first on-off element comprises the first control end, first path terminal and alternate path end, described second switch element comprises the second control end, third path end and the 4th path terminal, described first control end connects the input end of described electronic circuit unit, described first path terminal is connected with described first control end, described alternate path end is connected with the output terminal of described second control end and described electronic circuit unit, described third path end is connected with described first path terminal, described 4th path terminal is connected with the output terminal of described second control end and described electronic circuit unit.
2. display panels as claimed in claim 1, is characterized in that, described multiple electronic circuit units in series connects.
3. display panels as claimed in claim 2, it is characterized in that, the input end of first sub-circuit unit in described multiple electronic circuit unit connects with corresponding testing cushion, the input end of the electronic circuit unit that the output terminal of described first sub-circuit unit is adjacent with the next one is connected, the input end of last electronic circuit unit is connected with the output terminal of a upper adjacent electronic circuit unit, and the output terminal of last electronic circuit unit is connected with described earth terminal.
4. display panels as claimed in claim 1, it is characterized in that, if each protection circuit unit only comprises a sub-circuit unit, the input end of described electronic circuit unit connects with corresponding testing cushion, and the output terminal of described electronic circuit unit is connected with described earth terminal.
5. display panels as claimed in claim 1, it is characterized in that, described earth terminal connects a lighting jig, and by described lighting jig ground connection.
6. display panels as claimed in claim 1, it is characterized in that, described earth terminal connects a flexible PCB, and by described flexible circuit plate earthing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895850.7A CN105404035A (en) | 2015-12-08 | 2015-12-08 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510895850.7A CN105404035A (en) | 2015-12-08 | 2015-12-08 | Liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105404035A true CN105404035A (en) | 2016-03-16 |
Family
ID=55469620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510895850.7A Pending CN105404035A (en) | 2015-12-08 | 2015-12-08 | Liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105404035A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211147A1 (en) * | 2019-04-15 | 2020-10-22 | 武汉华星光电技术有限公司 | Display panel and apparatus |
| CN112349229A (en) * | 2020-10-27 | 2021-02-09 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
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| CN101625462A (en) * | 2008-07-07 | 2010-01-13 | 奇美电子股份有限公司 | Liquid crystal display module and liquid crystal display |
| JP2010108981A (en) * | 2008-10-28 | 2010-05-13 | Epson Imaging Devices Corp | Semiconductor device, electrooptical device, and electronic apparatus |
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| CN103293795A (en) * | 2012-03-05 | 2013-09-11 | 上海中航光电子有限公司 | Electrostatic protection circuit of liquid crystal display |
| CN103941908A (en) * | 2013-12-23 | 2014-07-23 | 上海天马微电子有限公司 | Touch screen display panel and touch screen display device |
-
2015
- 2015-12-08 CN CN201510895850.7A patent/CN105404035A/en active Pending
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| JPH11233777A (en) * | 1998-02-10 | 1999-08-27 | Sanyo Electric Co Ltd | Semiconductor device and display device |
| US20040017531A1 (en) * | 1998-03-27 | 2004-01-29 | Sharp Kabushiki Kaisha | Active-matrix-type liquid crystal display panel and method of inspecting the same |
| CN101546907A (en) * | 2008-03-25 | 2009-09-30 | 中华映管股份有限公司 | Electrostatic protection circuit and active element array substrate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211147A1 (en) * | 2019-04-15 | 2020-10-22 | 武汉华星光电技术有限公司 | Display panel and apparatus |
| CN112349229A (en) * | 2020-10-27 | 2021-02-09 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
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| CN112349229B (en) * | 2020-10-27 | 2023-08-08 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160316 |