CN105785610A - Test circuit for liquid crystal display panel - Google Patents
Test circuit for liquid crystal display panel Download PDFInfo
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- CN105785610A CN105785610A CN201610280685.9A CN201610280685A CN105785610A CN 105785610 A CN105785610 A CN 105785610A CN 201610280685 A CN201610280685 A CN 201610280685A CN 105785610 A CN105785610 A CN 105785610A
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- data wire
- test stub
- display panels
- stub
- grid line
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a test circuit for a liquid crystal display panel, which is used for testing the liquid crystal display panel. The liquid crystal display panel comprises a plurality of pixel units, wherein the pixel units of a same row are connected with data lines at a same side; the pixel units of adjacent rows of the same column are connected with data lines on two sides respectively; the test circuit comprises a first data line test shorting bar and a second data line test shorting bar; the first data line test shorting bar and the second data line test shorting bar both comprise red signal lines, green signal lines and blue signal lines; the data lines of the liquid crystal display panel are alternately connected to the first data line test shorting bar and the second data line test shorting bar according to the sequence of red, green and blue. The test circuit for the liquid crystal display panel has the advantages that the test circuit used for testing the liquid crystal panel of which signals of data lines are input in an alternate manner from the upper side and the lower side of the liquid crystal panel is provided, and the high-accuracy testing is provided.
Description
Technical field
The present invention relates to display panels field, particularly relate to a kind of display panels measurement circuit.
Background technology
In display panels production process, generally all can once power up the test lighted, display whether normally detecting liquid crystal pixel.In the technology of existing liquid crystal panel test detection, the main mode adopting test stub (Shortingbar) panel wiring is tested, described test stub is exactly the panel zone that independent gate signal or data signal carry out short circuit, the various exceptions that LCD intralaminar part occurs, just can be detected at this station by this test in theory, it should guarantee to provide signal to test to each pixel cell.
As it is shown in figure 1, Fig. 1 illustrates the structural representation of a kind of typical liquid crystal panel LCD array substrate, described array base palte includes viewing area 10 and is positioned at the outer peripheral areas 11 of periphery, described viewing area 10.
Being provided with a plurality of orthogonal data wire Dm and grid line Gn in viewing area 10, each data line Dm is connected a pixel cell 14 with grid line Gm infall.The first test stub 15 and public electrode wire 16 it is provided with in described outer peripheral areas 11, described first test stub 15 is provided with danger signal line R, green line G and blue signal line B (corresponding respectively to the test of RGB R/G/B), the data wire Dm being connected with red pixel cell is connected to danger signal line R, the data wire Dm being connected with green pixel cell is connected to green line G, the data wire Dm being connected with blue pixel cells is connected to blue signal line B, danger signal line R, for there is data wire test signal to described data wire Dm in green line G and blue signal line B, described public electrode wire 16 is for providing public electrode to pixel cell 14 each in viewing area 10；It is additionally provided with the second test stub 18 in described outer peripheral areas, described second test stub 18 is provided with a plurality of grid line p-wire 19, each grid line Gn connects with in viewing area 10 respectively, for there is grid line test signal to described grid line Gn, test stub 15 by described first and pixel cell 14 can be lighted by the second test stub 18, when the first test stub 15 provides R signal and the second test stub 18 opens, all red pixel cell are lighted, when the first test stub 15 provides Gn signal and the second test stub 18 opens, all green pixel cell are lighted, when the first test stub 15 provides B signal and the second test stub 18 opens, all blue pixel cells are lighted, display whether defective thus detecting liquid crystal pixel.
The resolution of current TV panel is more and more higher, screen size is certain, resolution is more high, data wire also gets more and more immediately, data wire is more many, quantity also gets more and more the required COF (ChiponFilm chip on film) introduced by external data signal in display panels, and the pin of COF has some upper limits, and the distance between COF and COF is also required to enough spaces to meet processing procedure border (margin).And the panel that size is certain, due to limited space, the unilateral COFIC put has certain quantity to limit, and face to face in the increasing situation of panel data line, is difficult to as traditional design scheme and puts COF.
Referring to Fig. 2, the difficult problem that COF space is inadequate is put in order to solve one side, the signal of data wire D1～Dm is intersected from the upper and lower both sides of liquid crystal panel and feeds, the signal of grid line G1～Gn still feeds from liquid crystal panel side, multiple data wire dateCOF are arranged on the both sides up and down that liquid crystal panel is relative, and multiple grid line GateCOF are arranged on liquid crystal panel side, so, when identical data line quantity, it is possible to the space doubled.This is for a solution of the resolution panels of small-medium size.
For the liquid crystal panel that above-mentioned data line signal feeds from liquid crystal panel upper and lower both sides intersection, conventional liquid crystal panel detecting method obviously can not be applied, therefore, a kind of measurement circuit being applied to the liquid crystal panel that data line signal feeds from liquid crystal panel upper and lower both sides intersection is needed badly.
Summary of the invention
The technical problem to be solved is to provide a kind of display panels measurement circuit, and the liquid crystal panel that data line signal feeds from liquid crystal panel upper and lower both sides intersection can be tested by it, it is provided that the test of high accuracy.
In order to solve the problems referred to above, the invention provides a kind of display panels measurement circuit, described display panels includes multiple pixel cell, the data wire of the same side is wherein connected with the pixel cell of a line, the data wire of both sides is connected respectively with the pixel cell of string adjacent lines, it is characterized in that, described measurement circuit includes the first data wire test stub, second data wire test stub, described first data wire test stub and the second data wire test stub all include danger signal line, green line and blue signal line, the data wire of described display panels is according to red, green, blue sequence alternate is connected to described first data wire test stub and the second data wire test stub.
Further, one first data wire connects the danger signal line of described first data wire test stub, second data wire adjacent with described first data wire connects the green line of described second data wire test stub, threeth data wire adjacent with described second data wire connects the blue signal line of described first data test stub, fourth data wire adjacent with described 3rd data wire connects the danger signal line of described second data wire test stub, the data wire of described display panels is connected with described first data wire test stub and the second data wire test stub cycle alternation so successively.
Further, described first data wire test stub and the second data wire test stub are separately positioned on the both sides up and down of described display panels.
Further, it is additionally provided with one first public electrode wire in described first data wire test stub side.
Further, it is additionally provided with one second public electrode wire in described second data wire test stub side.
Further, described measurement circuit also includes odd number grid line test stub and even number grid line test stub, described odd number grid line test stub is connected with odd number grid line, described even number grid line test stub is connected with even number grid line, if opening described odd number grid line test stub, the danger signal line input signal of described first data wire test stub and the second data wire test stub, then the red pixel of all odd-numbered lines is lighted, the green line input signal of described first data wire test stub and the second data wire test stub, then the green pixel of all odd-numbered lines is lighted, the blue signal line input signal of described first data wire test stub and the second data wire test stub, then the blue pixel of all odd-numbered lines is lighted；If opening described even number grid line test stub, the green line input signal of described first data wire test stub and the second data wire test stub, then the red pixel of all even number lines is lighted, the blue signal line input signal of described first data wire test stub and the second data wire test stub, then the green pixel of all even number lines is lighted, the danger signal line input signal of described first data wire test stub and the second data wire test stub, then the blue pixel of all even number lines is lighted.
Further, described odd number grid line test stub and even number grid line test stub are arranged on the same side of described display panels.
Further, it is additionally provided with one the 3rd public electrode wire at described odd number grid line test stub and even number grid line test stub side.
Further, described display panels includes viewing area and is positioned at the outer peripheral areas that described viewing area is peripheral, and described measurement circuit is arranged on the outer peripheral areas of display panels.
It is an advantage of the current invention that, test signal is divided into two groups of data wire test stubs, and two groups of data wire test stubs are alternately connected with data wire, can be used for the test of the display panels that data line signal feeds at display panels not homonymy, improve the accuracy of test, and make full use of space.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical liquid crystal panel LCD array substrate；
The one that Fig. 2 is existing display panels drives framework；
Fig. 3 is the structural representation of the array base palte of this valve display panels.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of display panels measurement circuit provided by the invention is elaborated.
Referring to Fig. 3, display panels includes viewing area 30 and is arranged on the outer peripheral areas 40 of described display 30 periphery.Being provided with a plurality of orthogonal data wire and grid line in viewing area 30, each data line is connected a pixel cell 31 with grid line infall.In this embodiment, data wire D1～D12 and grid line G1～G7 is schematically indicated.
Described display panels includes multiple pixel cell 31, the data wire of the same side is wherein connected with the pixel cell 31 of a line, the data wire of both sides is connected respectively with the pixel cell 31 of string adjacent lines, that is centrally located data wire can be connected with the pixel cell 31 of the left and right sides by between-line spacing, it is the structure of 1G1DFlip drive form, as shown in Figure 3, the pixel cell 31 of odd-numbered line is all connected with the data wire on the left of it, the pixel cell 31 of even number line is all connected with the data wire on the right side of it, such as, the pixel cell 31 of first row, the pixel cell 31 of odd-numbered line is connected to the first data wire D1, the pixel cell 31 of even number line is connected to the second data wire D2.In this embodiment, the signal of described data wire feeds from the intersection of both sides up and down of display panels.
Described outer peripheral areas 40 is provided with display panels measurement circuit.Display panels measurement circuit of the present invention includes the first data wire test stub 41 and the second data wire test stub 42.Described first data wire test stub 41 and the second data wire test stub 42 all include danger signal line R, green line G and blue signal line B, described danger signal line R is used for providing red test signal, described green line G is used for providing green test signal, and described blue signal line B is used for providing blue test signal.
The data wire of described display panels is connected to described first data wire test stub 41 and the second data wire test stub 42 according to the sequence alternate of red, green, blue, namely described data wire and described first data wire test stub 41 and the second data wire test stub 42 order of connection are RGBRGB, and described first data wire test stub 41 and the second data wire test stub 42 are used for data wire input test signal.Such as, one first data wire D1 connects the danger signal line R of described first data wire test stub 41, the green line G of described second data wire test stub 42 is connected with described first adjacent for data wire D1 the second data wire D2, with the blue signal line B that described second adjacent for data wire D2 the 3rd data wire D3 connects described first data test stub 41, the danger signal line R of described second data wire test stub 42 is connected with described 3rd adjacent for data wire D3 the 4th data wire D4, so circulate successively, the data wire making described display panels is alternately connected with described first data wire test stub 41 and the second data wire test stub 42, namely described data wire tests stub 41 and the second data wire test stub 42 according to first data wire that is sequentially connected with of RGB.
Described measurement circuit also includes odd number grid line test stub 43 and even number grid line test stub 44, described odd number grid line test stub 43 is connected with odd number grid line, described even number grid line test stub 44 is connected with even number grid line, for to described odd number grid line and even number grid line input test signal, when described odd number grid line tests stub 43 to odd number grid line input test signal, the data wire intersected with described odd number grid line.
Display panels measurement circuit test process of the present invention is as follows, often signal of input, can only light the corresponding picture element signal of half.
Open described odd number grid line test stub 43, described odd number grid line test stub 43 is to odd number grid line input test signal, the danger signal line R of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the red pixel of all odd-numbered lines is lighted, the green line G of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the green pixel of all odd-numbered lines is lighted, the blue signal line B of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the blue pixel of all odd-numbered lines is lighted.Namely data wire is RBGRBG with the order of connection of described first data wire test stub 41.
Open described even number grid line test stub 44, described even grid line test stub 44 is to even number grid line input test signal, the green line G of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the red pixel of all even number lines is lighted, the blue signal line B of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the green pixel of all even number lines is lighted, the danger signal line R of described first data wire test stub 41 and the second data wire test stub 42 inputs signal to connected data wire, then the blue pixel of all even number lines is lighted.Namely data wire is GRBGRB with the order of connection of described second data wire test stub 42.
Further, described first data wire test stub 41 and the second data wire test stub 42 are separately positioned on the both sides up and down of described display panels, described odd number grid line test stub 43 and even number grid line test stub 44 are arranged on the same side of described display panels, in order to the distribution in space.
It is additionally provided with one first public electrode wire 45 in described first data wire test stub 41 side, it is additionally provided with one second public electrode wire 46 in described second data wire test stub 42 side, is additionally provided with one the 3rd public electrode wire 47 at described odd number grid line test stub 43 and even number grid line test stub 44 side.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. a display panels measurement circuit, described display panels includes multiple pixel cell, the data wire of the same side is wherein connected with the pixel cell of a line, the data wire of both sides is connected respectively with the pixel cell of string adjacent lines, it is characterized in that, described measurement circuit includes the first data wire test stub, second data wire test stub, described first data wire test stub and the second data wire test stub all include danger signal line, green line and blue signal line, the data wire of described display panels is according to red, green, blue sequence alternate is connected to described first data wire test stub and the second data wire test stub.
2. display panels measurement circuit according to claim 1, it is characterized in that, one first data wire connects the danger signal line of described first data wire test stub, second data wire adjacent with described first data wire connects the green line of described second data wire test stub, threeth data wire adjacent with described second data wire connects the blue signal line of described first data test stub, fourth data wire adjacent with described 3rd data wire connects the danger signal line of described second data wire test stub, the data wire of described display panels is connected with described first data wire test stub and the second data wire test stub cycle alternation so successively.
3. display panels measurement circuit according to claim 1, it is characterised in that described first data wire test stub and the second data wire test stub are separately positioned on the both sides up and down of described display panels.
4. display panels measurement circuit according to claim 1, it is characterised in that be additionally provided with one first public electrode wire in described first data wire test stub side.
5. display panels measurement circuit according to claim 4, it is characterised in that be additionally provided with one second public electrode wire in described second data wire test stub side.
6. display panels measurement circuit according to claim 1, it is characterized in that, described measurement circuit also includes odd number grid line test stub and even number grid line test stub, and described odd number grid line test stub is connected with odd number grid line, and described even number grid line test stub is connected with even number grid line.
7. display panels measurement circuit according to claim 6, it is characterised in that described odd number grid line test stub and even number grid line test stub are arranged on the same side of described display panels.
8. display panels measurement circuit according to claim 6, it is characterised in that be additionally provided with one the 3rd public electrode wire at described odd number grid line test stub and even number grid line test stub side.
9. display panels measurement circuit according to claim 1, it is characterised in that described display panels includes viewing area and is positioned at the outer peripheral areas that described viewing area is peripheral, and described measurement circuit is arranged on the outer peripheral areas of display panels.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280685.9A CN105785610B (en) | 2016-04-28 | 2016-04-28 | Liquid crystal display panel measurement circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610280685.9A CN105785610B (en) | 2016-04-28 | 2016-04-28 | Liquid crystal display panel measurement circuit |
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| CN105785610A true CN105785610A (en) | 2016-07-20 |
| CN105785610B CN105785610B (en) | 2019-05-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200181A (en) * | 2016-09-07 | 2016-12-07 | 深圳市华星光电技术有限公司 | A kind of display panels measurement circuit and display panels |
| CN108335682A (en) * | 2018-02-13 | 2018-07-27 | 厦门天马微电子有限公司 | Display panel and test method, display device |
| CN108983461A (en) * | 2018-08-22 | 2018-12-11 | 惠科股份有限公司 | array substrate and liquid crystal module |
| CN109557738A (en) * | 2018-12-21 | 2019-04-02 | 惠科股份有限公司 | test circuit, test method and display panel |
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| CN101592832A (en) * | 2008-05-29 | 2009-12-02 | 立景光电股份有限公司 | Silica-based liquid crystal panel |
| CN103399422A (en) * | 2013-07-31 | 2013-11-20 | 合肥京东方光电科技有限公司 | Signal line and repair line short circuit detection method |
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| US20070194348A1 (en) * | 2006-02-17 | 2007-08-23 | Au Optronics Corp. | Circuit and a display using same |
| CN101191910A (en) * | 2006-11-30 | 2008-06-04 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and testing method thereof |
| CN101021628A (en) * | 2007-02-16 | 2007-08-22 | 友达光电股份有限公司 | Testing system and method for liquid crystal display panel and array substrate |
| CN101592832A (en) * | 2008-05-29 | 2009-12-02 | 立景光电股份有限公司 | Silica-based liquid crystal panel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200181A (en) * | 2016-09-07 | 2016-12-07 | 深圳市华星光电技术有限公司 | A kind of display panels measurement circuit and display panels |
| CN108335682A (en) * | 2018-02-13 | 2018-07-27 | 厦门天马微电子有限公司 | Display panel and test method, display device |
| CN108983461A (en) * | 2018-08-22 | 2018-12-11 | 惠科股份有限公司 | array substrate and liquid crystal module |
| CN108983461B (en) * | 2018-08-22 | 2021-04-27 | 惠科股份有限公司 | Array substrate and liquid crystal module |
| CN109557738A (en) * | 2018-12-21 | 2019-04-02 | 惠科股份有限公司 | test circuit, test method and display panel |
| CN109557738B (en) * | 2018-12-21 | 2022-06-10 | 惠科股份有限公司 | Test circuit, test method and display panel |
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| CN105785610B (en) | 2019-05-03 |
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