CN100439978C - LCD Panel testing method and equipment thereof - Google Patents
LCD Panel testing method and equipment thereof Download PDFInfo
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- CN100439978C CN100439978C CNB031201091A CN03120109A CN100439978C CN 100439978 C CN100439978 C CN 100439978C CN B031201091 A CNB031201091 A CN B031201091A CN 03120109 A CN03120109 A CN 03120109A CN 100439978 C CN100439978 C CN 100439978C
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Abstract
The present invention provides a testing method for a liquid crystal display panel, which is used for driving to light the liquid crystal display panel. The present invention comprises the following steps: conducting rubber with good electric conductivity is cut into a strip shape according to an electrode area of a positive electrode of a single electrode area of the liquid crystal display panel and the length of two parts of shared voltage; a conductor which is cut into a strip shape is fixed to the power supply area of signal lines and the electrode area of scan lines, and thus, the signal lines of the electrode area of the positive electrode are contacted together. The electrode areas of the positive electrode of all signal lines and the scan lines and the area of the shared voltage are separately in short circuit. Waveform singles are added into the power supply area of the signal lines and the electrode area of the scan lines by a signal generator, and the voltage of the power supply area of the signal lines is adjusted so as to change a gray level of the liquid crystal display panel; namely, various defects of the liquid crystal display panel can be detected. In addition, the proposal also discloses a testing device for a liquid crystal display panel.
Description
Technical field
The invention relates to a kind of method of testing and equipment thereof of display panels, especially a kind of use conductive rubber of finger and electrode supply drive and light display panels, and need not to utilize contact type probe or form the LCD module, picture is differentiated to carry out, fiduciary level is tested and the method for testing and the equipment thereof of the display panels of analysis.
Background technology
The method of testing of existing display panels generally can be divided into two kinds, and one for using contact type probe (Probe Contact) to contact with the electrode district (Lead) of display panels (CELL), utilizes the signal generator input signal to produce again and drive; Another utilizes the signal generator input signal to produce again and drives for display panels being assembled to the PCB pressure programming of liquid crystal display module (LCM) section.
Please refer to Fig. 1, it illustrates an existing synoptic diagram that uses contact type probe with the test fluid LCD panel.As shown in the figure, contact type probe clamp tool B is contacted with the electrode district A1 (Lead) of display panel A, utilize the signal generator input signal cable to come display control state again to sweep trace and data line.Only the employed contact type probe of this kind test mode is very expensive, and a winding touch probe only is applicable to a kind of display panel of model, and the display panel of different model needs different contact type probes, will cause production cost to increase.
Please refer to Fig. 2, it illustrates one and has now the display panels group to the synoptic diagram that shows module.As shown in the figure, according to the processing procedure that generally shows module factory at present, display panels C and drive integrated circult D and printed circuit board (PCB) E pressing are combined into the LCD module, utilize signal generator F input signal cable to come display control state again to sweep trace and data line.Only this kind test mode is because the trend that the LCD module has the lower area of migration processing cost to set up factories, so as if organizing to just finding that the display panels defectiveness returns again after the LCD module is lighted, its loss will be quite huge.
Therefore, the present invention provides a kind of method of testing of display panels, it lights display panels by using conductive rubber and electrode supply to drive, and need not to utilize contact type probe or form the LCD module, picture is differentiated to carry out, fiduciary level is tested and analysis, to reduce production costs.
Summary of the invention
The method of testing that the purpose of this invention is to provide a kind of display panels, it lights display panels by using conductive rubber and power supply unit to drive, and need not to utilize contact type probe or form the LCD module, picture is differentiated to carry out, fiduciary level is tested and analysis, to reduce production costs.
The method of testing of a kind of display panels of the present invention is that the driving that is used for a TAB type display panels is lighted, and it is characterized in that this method of testing comprises the following steps:
Get a conductor and be cut into strip according to the two-part length in a positive electrical polar region and common voltage district in the unitary electrode district of this display panels;
The conductor that is cut into strip is fixed on a signal line electrode district and one scan line electrode district, each signal wire of this positive electrical polar region is all contacted;
With positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and the short circuit respectively of common voltage district; And
Utilize signal generator to add waveform signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing of adjusting this signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defectives of this display panels.
Wherein this conductor is to be a conductive rubber.
Wherein this conductive rubber is to be used for the short circuit use is done in this signal line electrode district and this scan-line electrode district.
Wherein should with this positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and common voltage district respectively the step of short circuit further comprise the following steps:
Positive electrical polar region part in the signal line electrode district uses electric wire to interconnect, and common voltage district part also interconnects; And
Positive electrical polar region part in the scan-line electrode district uses electric wire to interconnect, and common voltage district part also interconnects.
The method of testing of a kind of display panels of the present invention is that the driving that is used for a COG type display panels is lighted, and it is characterized in that this method of testing comprises the following steps:
Get a conductor and be cut into strip with the length that has altogether with voltage zone according to the length of redness, green and the blue testing cushion of this display panels;
The conductor that is cut into strip is fixed on a signal line electrode district, each signal wire of redness, green and blue testing cushion is all contacted;
With the even electrode in the scan-line electrode district and odd number electrode also short circuit together;
With all short circuits of positive electrical polar region in all signal line electrode districts and the scan-line electrode district; And
Utilize signal generator to add waveform signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing of adjusting this signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defectives of this display panels.
Wherein this conductor is a conductive rubber.
Wherein this conductive rubber is to be used for the short circuit use is done in this signal line electrode district and this scan-line electrode district.
Wherein should with this positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and common voltage district respectively the step of short circuit further comprise the following steps:
The anodal part of signal wire uses electric wire to interconnect, and common voltage district part also interconnects; And
Positive electrical polar region part in the scan-line electrode district uses electric wire to interconnect, and common voltage district part also interconnects.
Wherein this positive electrical polar region can not be used the voltage zone short circuit together.
Description of drawings
Be familiar with correlation technique person and can further understand structure of the present invention, feature and purpose thereof for making, below in conjunction with the detailed description of accompanying drawing and preferred embodiment as after, wherein:
Fig. 1 is a synoptic diagram, and it illustrates an existing synoptic diagram that uses contact type probe with the test fluid LCD panel;
Fig. 2 is a synoptic diagram, and it illustrates one and has now the display panels group to the synoptic diagram that shows module;
Fig. 3 is a synoptic diagram, and it illustrates the synoptic diagram in the unitary electrode district of display panels according to a preferred embodiment of the present invention;
Fig. 4 is a synoptic diagram, and it illustrates and uses the synoptic diagram of conductive rubber with signal line electrode district 11 and 12 short circuits of scan-line electrode district according to a preferred embodiment of the present invention;
Fig. 5 is a synoptic diagram, and it illustrates and uses conductive rubber with the signal line electrode district 11 of display panel 10 and the front elevation after 12 short circuits of scan-line electrode district according to a preferred embodiment of the present invention;
Fig. 6 is a synoptic diagram, and it illustrates in according to a preferred embodiment of the present invention the method positive electrical polar region in all the signal line electrode districts 11 and scan-line electrode district 12 and the common voltage district synoptic diagram after the short circuit respectively;
Fig. 7 is a synoptic diagram, and it illustrates the synoptic diagram according to red on the display panels in the method for another preferred embodiment of the present invention, green and blue testing cushion;
Fig. 8 is a synoptic diagram, and it illustrates another preferred embodiment according to the present invention and uses the synoptic diagram of conductive rubber with the testing cushion short circuit in signal line electrode district 51 and scan-line electrode district 52;
Fig. 9 is a synoptic diagram, and it illustrates according to the synoptic diagram after whole signal line electrode districts 51 in another preferred embodiment of the present invention and the 52 difference short circuits of scan-line electrode district;
Figure 10 is a synoptic diagram, and it illustrates the synoptic diagram of display panels testing apparatus according to a preferred embodiment of the present invention.
Embodiment
The driving lighting test method of display panels of the present invention is applicable to the drive integrated circult that uses two kinds of pattern encapsulation of TAB (the automatic bonding encapsulation of coil type) or COG (wafer package on glass).Wherein use the drive integrated circult of TAB (the automatic bonding encapsulation of coil type) encapsulation to please refer to Fig. 3 to Fig. 6, and use the drive integrated circult of COG (wafer package on glass) encapsulation to please refer to Fig. 7 to Fig. 9.
The method of lighting the TAB processing panel with driving comprises the following step according to a preferred embodiment of the present invention:
Get an electric conductivity favorable conductive rubber, be cut into strip (step 1) according to the two-part length in positive electrical polar region and common voltage district in the unitary electrode district of display panels;
The conductor that is cut into strip is fixed on signal line electrode district and scan-line electrode district, makes each signal wire of positive electrical polar region all contact (step 2);
With positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and common voltage district difference short circuit (step 3);
And utilize signal generator to add waveform (for example square wave or sine wave) signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing in adjustment signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defective (step 4) of display panels.
Please refer to Fig. 3, it illustrates the synoptic diagram in the unitary electrode district of display panels according to a preferred embodiment of the present invention.As shown in the figure, display panels 10 of the present invention comprises: a signal line electrode district (Vs) 11 and scan-line electrode district (Vg) 12.Wherein, this signal line electrode district 11 further comprises a plurality of positive electrical polar region 111 and a plurality of common voltages district (Vcom) 11
2; This scan-line electrode district (Vg) 12 further comprises a plurality of positive electrical polar region 121 and a plurality of common voltages district (Vcom) 122.
Please refer to Fig. 3, Fig. 4 and Fig. 5, Fig. 4 illustrates and uses the synoptic diagram of conductive rubber with 2 short circuits under signal line electrode district 11 and the scan-line electrode district according to a preferred embodiment of the present invention, and Fig. 5 illustrates and uses conductive rubber with the signal line electrode district 11 of display panel 10 and the front elevation after 12 short circuits of scan-line electrode district according to a preferred embodiment of the present invention.Foundation is of the present invention, and (step 1) is got a conductor, it is preferably is a conductive rubber 20,21,30 and 31, and is cut into strip according to the signal line electrode district 11 of display panels 10 and the positive electrical polar region 111,121 and common voltage district 112, the 122 two-part length in scan-line electrode district 12; And the conductive rubber 20,21,30 and 31 that will be cut into strip in (step 2) is separately fixed at signal line electrode district 11 and scan-line electrode district 12, make each signal wire of positive electrical polar region 111 all contact (step 2), wherein conductive rubber 20 is in order to a plurality of positive electrical polar region in short-circuit signal line electrode district 11 111 times, conductive rubber 21 is in order to a plurality of common voltages of short circuit districts (Vcom) 112, conductive rubber 30 is a plurality of positive electrical polar regions 121 in order to short circuit scan-line electrode district 12, and conductive rubber 31 is in order to a plurality of common voltages of short circuit districts (Vcom) 122.
Please refer to Fig. 5, as shown in the figure, after in (step 2) of the present invention, strip conductive rubber 20,21,30 and 31 being separately fixed at signal line electrode district 11 and scan-line electrode district 12, each signal wire in signal line electrode district 11 and scan-line electrode district 12 is all contacted.
Please refer to Fig. 3 and Fig. 6, it illustrates in according to a preferred embodiment of the present invention the method positive electrical polar region in all the signal line electrode districts 11 and scan-line electrode district 12 and the common voltage district synoptic diagram after the short circuit respectively.As shown in the figure, (use electric wire 41 to interconnect the positive electrical polar region in whole signal line electrodes district 11 111 in the step 3) in of the present invention, common voltage district 112 uses electric wire 42 to interconnect, 12 positive electrical polar region 121 then uses electric wire 43 to interconnect in the scan-line electrode district, and 122 in common voltage district uses electric wire 44 to interconnect.
So, utilize signal generator (figure do not show) to add waveform (for example square wave or sine wave) signal respectively to this signal line electrode district 11 and this scan-line electrode district 12 again, and the voltage swing of adjusting signal line electrode district 11 can be inspected out all kinds of defectives of display panels 10 to change the GTG of this display panels 10.
In addition another preferred embodiment according to the present invention method of lighting the COG processing panel with driving comprises the following step: get a conductor and be cut into strip (step 1) according to the length of redness, green and the blue testing cushion of this display panels with the length that has altogether with voltage zone; The strip conductor that is cut into is fixed on a signal line electrode district, makes each signal wire of redness, green and blue testing cushion all contact (step 2); With the even electrode in scan-line electrode district and odd number electrode also short circuit (step 3) together; With the short circuit (step 4) all of this positive electrical polar region in all signal line electrode districts and the scan-line electrode district; And utilize signal generator to add waveform (for example square wave or sine wave) signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing of adjusting this signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defective (step 5) of this display panels.
Please refer to Fig. 7, it illustrates the synoptic diagram according to red on the display panels in the method for another preferred embodiment of the present invention, green and blue testing cushion.As shown in the figure, have signal line electrode district 51 and scan-line electrode district 52 according to the display panels 50 of COG processing panel of the present invention respectively on it, wherein this signal line electrode district 51 further has redness 511, green 512 and blueness 513 and common voltage district 514 testing cushion (Test Pad), and this sweep trace district 52 then has odd electrode 521 (GE), even electrode 522 (GE) and common voltage 523.
Please refer to Fig. 7, Fig. 8 and Fig. 9, Fig. 8 illustrates another preferred embodiment according to the present invention and uses the synoptic diagram of conductive rubber with the testing cushion short circuit in signal line electrode district 51 and scan-line electrode district 52, and Fig. 9 illustrates according to the synoptic diagram after whole signal line electrode districts 51 in another preferred embodiment of the present invention and the 52 difference short circuits of scan-line electrode district.According to of the present invention (step 1) is got a conductive rubber 60,61,70 and 71, and according to the redness 511 of this display panels 50, green 512 and the length of blue 513 testing cushion be cut into strip with the length with voltage zone 514 testing cushion altogether; Again the strip conductive rubber 60 that is cut into is fixed on signal line electrode district 51, makes red 511, green 512 and each signal wire of blue 513 testing cushion all contact (step 2); Wherein conductive rubber 60 is in order to short circuit a plurality of red 511, green 512 and blue 513 testing cushion, conductive rubber 61 is in order to a plurality of common voltages of short circuit districts (Vcom) 514 testing cushion, conductive rubber 70 is in order to odd electrode (GO) 521 in short circuit scan-line electrode district 52 and even electrode 522 (GE), and conductive rubber 71 is in order to short circuit common voltage district 523.
Please refer to Fig. 7 and Fig. 9, as shown in the figure, foundation is of the present invention, and (step 4) is with whole a plurality of red 511, green 512 and blue 513 testing cushion use electric wire 81 to interconnect, a plurality of common voltages district (Vcom) 514 testing cushion use electric wire 82 to interconnect, odd electrode 521 (GE) even electrode 522 (GE) in scan-line electrode district 52 then use electric wire 83 to interconnect, and 523 in common voltage district uses electric wire 84 to interconnect.
So, utilize signal generator (figure do not show) to add waveform (for example square wave or sine wave) signal respectively to this signal line electrode district 51 and this scan-line electrode district 52 again, and the voltage swing of adjusting signal line electrode district 51 can be inspected out all kinds of defectives of display panels 50 to change the GTG of this display panels 50.
Please refer to Figure 10, it illustrates the synoptic diagram of display panels testing apparatus according to a preferred embodiment of the present invention.As described in Figure, testing apparatus according to preferred embodiment of the present invention comprises: closed container 90, being preferably is a hot and humid stove, it has a loam cake 91 and a pedestal 92, this loam cake 91 is can be covered on this pedestal 92 and have an opening 94 on this loam cake 91, has at least one air hole 95 on this pedestal 92 and the outside has a gauge tap 93, wherein this loam cake 91 is preferably to transparent material is made and observes with convenient, and this gauge tap 93 is the process parameter (for example temperature and/or humidity) in order to control this closed container 90; And at least one signal generator 100,101, its signal wire stretches in this closed container 90 and connects via this opening 94 puts this display panels 10 or 50, in order to light this display panels 10 or 50; When this display panels 10 or 50 place on this pedestal 92 and with the signal wire of this signal generator 100,101 finish be connected after, can be by adjusting this gauge tap 93 to required process parameter (for example humidity and/or temperature), to light this display panels 10 or 50 to inspect out all kinds of defectives of display panels.Wherein, to be preferably be a TAB type display panels or a COG type display panels to this display panels.
So, via enforcement of the present invention, no matter can make is that the display panels that TAB (the automatic bonding encapsulation of coil type) or COG (wafer package on glass) encapsulate need not use expensive contact type probe, also need not be assembled into all kinds of defectives that the LCD module can be lighted this display panels and can inspect out display panels, to reach the purpose that reduces manufacturing cost.
Disclosed, be preferred embodiment, the change of every part or modification and come from technological thought of the present invention and be familiar with this technology the people was easy to know by inference, all do not take off claim category of the present invention.
Claims (9)
1. the method for testing of a display panels is that the driving that is used for a TAB type display panels is lighted, and it is characterized in that this method of testing comprises the following steps:
Get a conductor and be cut into strip according to the two-part length in a positive electrical polar region and common voltage district in the unitary electrode district of this display panels;
The conductor that is cut into strip is fixed on a signal line electrode district and one scan line electrode district, each signal wire of this positive electrical polar region is all contacted;
With positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and the short circuit respectively of common voltage district; And
Utilize signal generator to add waveform signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing of adjusting this signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defectives of this display panels.
2. the method for testing of display panels as claimed in claim 1 is characterized in that, wherein this conductor is to be a conductive rubber.
3. the method for testing of display panels as claimed in claim 2 is characterized in that, wherein this conductive rubber is to be used for the short circuit use is done in this signal line electrode district and this scan-line electrode district.
4. the method for testing of display panels as claimed in claim 1 is characterized in that, wherein should with this positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and common voltage district respectively the step of short circuit further comprise the following steps:
Positive electrical polar region part in the signal line electrode district uses electric wire to interconnect, and common voltage district part also interconnects; And
Positive electrical polar region part in the scan-line electrode district uses electric wire to interconnect, and common voltage district part also interconnects.
5. the method for testing of a display panels is that the driving that is used for a COG type display panels is lighted, and it is characterized in that this method of testing comprises the following steps:
Get a conductor and be cut into strip with the length that has altogether with voltage zone according to the length of redness, green and the blue testing cushion of this display panels;
The conductor that is cut into strip is fixed on a signal line electrode district, each signal wire of redness, green and blue testing cushion is all contacted;
With the even electrode in the scan-line electrode district and odd number electrode also short circuit together;
With all short circuits of positive electrical polar region in all signal line electrode districts and the scan-line electrode district; And
Utilize signal generator to add waveform signal respectively to this signal line electrode district and this scan-line electrode district, and the voltage swing of adjusting this signal line electrode district is to change the GTG of this display panels, to inspect out all kinds of defectives of this display panels.
6. the method for testing of display panels as claimed in claim 5 is characterized in that, wherein this conductor is a conductive rubber.
7. the method for testing of display panels as claimed in claim 6 is characterized in that, wherein this conductive rubber is to be used for the short circuit use is done in this signal line electrode district and this scan-line electrode district.
8. the method for testing of display panels as claimed in claim 5 is characterized in that, wherein should with this positive electrical polar region in whole signal line electrodes district and the scan-line electrode district and common voltage district respectively the step of short circuit further comprise the following steps:
The anodal part of signal wire uses electric wire to interconnect, and common voltage district part also interconnects; And
Positive electrical polar region part in the scan-line electrode district uses electric wire to interconnect, and common voltage district part also interconnects.
9. as the method for testing of claim 1 or 5 described display panels, it is characterized in that wherein this positive electrical polar region can not be used the voltage zone short circuit together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031201091A CN100439978C (en) | 2003-03-07 | 2003-03-07 | LCD Panel testing method and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031201091A CN100439978C (en) | 2003-03-07 | 2003-03-07 | LCD Panel testing method and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1527046A CN1527046A (en) | 2004-09-08 |
| CN100439978C true CN100439978C (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031201091A Expired - Lifetime CN100439978C (en) | 2003-03-07 | 2003-03-07 | LCD Panel testing method and equipment thereof |
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| CN (1) | CN100439978C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4660122B2 (en) * | 2004-05-28 | 2011-03-30 | 東芝モバイルディスプレイ株式会社 | Inspection matrix for active matrix liquid crystal display devices |
| KR100722223B1 (en) * | 2004-12-11 | 2007-05-29 | 주식회사 매크론 | Apparatus for inspecting back light unit |
| CN100449318C (en) * | 2006-04-11 | 2009-01-07 | 友达光电股份有限公司 | Device and method for detecting whether circuit array is short circuit |
| CN101187734B (en) * | 2006-11-15 | 2011-02-09 | 群康科技(深圳)有限公司 | Liquid crystal display manufacture method |
| CN101900893B (en) * | 2009-05-26 | 2012-04-04 | 北京京东方光电科技有限公司 | Method for detecting foreign particles in LCD panel and LCD panel control circuit |
| EP2440015B1 (en) * | 2009-06-05 | 2017-11-15 | Beijing Visionox Technology Co., Ltd. | Organic electroluminescence device and testing method thereof |
| EP2500343B1 (en) | 2009-11-13 | 2018-01-31 | Beijing Visionox Technology Co., Ltd. | Organic materials and organic electroluminescent apparatuses using the same |
| WO2014059627A1 (en) * | 2012-10-17 | 2014-04-24 | Zhao Lin | Connection device for lcd-testing equipment |
| CN103995000B (en) | 2014-05-15 | 2017-01-11 | 京东方科技集团股份有限公司 | Checking device and checking system of display substrate |
| CN104700760B (en) * | 2015-04-01 | 2017-05-31 | 友达光电(厦门)有限公司 | Display panel, detection circuit and its detection method |
| CN113851065B (en) * | 2020-06-09 | 2023-08-22 | 华为技术有限公司 | Display panel testing device and display panel testing box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11212105A (en) * | 1998-01-21 | 1999-08-06 | Matsushita Electric Ind Co Ltd | Liquid crystal display panel |
| KR100294682B1 (en) * | 1994-12-21 | 2001-09-17 | 구본준, 론 위라하디락사 | Defect inspecting method for liquid crystal display |
| US20020085169A1 (en) * | 2000-12-30 | 2002-07-04 | Choi Gyo Un | Liquid crystal display for testing defects of wiring in panel |
| JP2002328627A (en) * | 2001-04-27 | 2002-11-15 | Seiko Epson Corp | Inspection method of display device |
-
2003
- 2003-03-07 CN CNB031201091A patent/CN100439978C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100294682B1 (en) * | 1994-12-21 | 2001-09-17 | 구본준, 론 위라하디락사 | Defect inspecting method for liquid crystal display |
| JPH11212105A (en) * | 1998-01-21 | 1999-08-06 | Matsushita Electric Ind Co Ltd | Liquid crystal display panel |
| US20020085169A1 (en) * | 2000-12-30 | 2002-07-04 | Choi Gyo Un | Liquid crystal display for testing defects of wiring in panel |
| JP2002328627A (en) * | 2001-04-27 | 2002-11-15 | Seiko Epson Corp | Inspection method of display device |
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| CN1527046A (en) | 2004-09-08 |
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Granted publication date: 20081203 |