CN100451742C - Liquid crystal panel detecting method and device - Google Patents
Liquid crystal panel detecting method and device Download PDFInfo
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- CN100451742C CN100451742C CNB2007101279765A CN200710127976A CN100451742C CN 100451742 C CN100451742 C CN 100451742C CN B2007101279765 A CNB2007101279765 A CN B2007101279765A CN 200710127976 A CN200710127976 A CN 200710127976A CN 100451742 C CN100451742 C CN 100451742C
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- crystal panel
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Abstract
The invention reveals a LCD panel detecting method and device for detecting LCD panel comprising ICs and display unit and the method comprises the steps of: removing ICs; placing the LCD panel on a detection platform; using a probe to contact line defect position of the LCD panel; guiding the tested signal through the probe to the display unit; and determining the detection result according to the image signal outputted by the display unit to determine whether the display unit is good or not.
Description
Technical field
The present invention relates to a kind of detection method and device, particularly a kind of detection method and device that is used to detect liquid crystal panel.
Background technology
The progressive fast and evolution along with display technology, traditional cathode-ray tube display (cathoderay tube CRT) is eliminated gradually, the substitute is light, thin, short, little LCD (liquid crystal display, LCD).Because advantages such as LCD has the display quality height, energy resource consumption is low and radiationless make LCD be applied in large quantities among communication, information or the consumption electronic products such as mobile phone, PDA(Personal Digital Assistant), notebook, digital code camera, digital camera, computer screen and LCD TV.
Fig. 1 is known LCD A1, it comprises liquid crystal display (cell) A11, with coil type crystal grain joining technique (tape automated bonding, TAB), ambetti joining technique (chip onglass, COG) or crystal grain soft mode joining technique (chip on film, COF) a plurality of encapsulating structure A12 that encapsulate, and a plurality of circuit board A13.Each encapsulating structure A12 all has a drive integrated circult chip (liquid crystal driver IC chip) A121, in order to drive the liquid crystal layer of liquid crystal display A11.
As LCD A1 normally during display image, it may be the impaired and normal display image of liquid crystal display A11, also may drive integrated circult chip A121 impaired or defectiveness, thereby can't correctly drive liquid crystal display A11 according to signal, cause normally display image of liquid crystal display A11.According to known technology, in order to judge is liquid crystal display A11 or the defective of drive integrated circult chip A121 and line defect takes place actually, must remove the drive integrated circult chip A121 on the circuit board A13 earlier, reinstall another new drive integrated circult chip A121 again.If the normal display image of LCD A1, then the drive integrated circult chip A121 defective that is removed of judgement or encapsulation procedure defective and cause normally display image of LCD A1.Otherwise, if LCD A1 normal display image still judges that then liquid crystal display A11 is a defective.Aforesaidly remove or install the drive integrated circult chip, its embodiment is to remove or install encapsulating structure by integral body to finish, and the following stated is identical.
Though this detection mode can be judged the normally reason of display image of LCD A1, but must labor intensive reinstall another drive integrated circult chip A121 in board, so not only cause the waste of manpower, board and drive integrated circult chip A121, and make whole testing process expend the considerable time, and then make that the testing cost of LCD A1 is high.Therefore, how improving the method for testing of LCD A1, reinstall the waste that another drive integrated circult chip A121 is caused with minimizing, and then solve the too high shortcoming of testing cost of LCD A, is an instant problem to be solved.
Summary of the invention
Therefore, the present invention proposes a kind of liquid crystal panel detecting method, in order to detect liquid crystal panel.Liquid crystal panel comprises integrated circuit and display unit (cell), and detection method comprises the following steps: to remove integrated circuit; Liquid crystal panel is positioned over detection platform; With the line defect place of probe contact liquid crystal panel, wherein grasp one of a plurality of alignment marks of this liquid crystal panel with a contraposition module, make the line defect place of this this liquid crystal panel of probe alignment; Import test signal to display unit by probe; And the picture signal of exporting according to display unit is judged testing result, wherein relatively be somebody's turn to do the picture signal and the reference signal of output, if the comparative result of the picture signal of this output and this reference signal is pointed out this display unit for normal, judge that then this integrated circuit is for good; If the comparative result of the picture signal of this output and this reference signal is pointed out this display unit and for unusual, is judged that then this display unit is bad.Whether so, can understand display unit is bad.
The present invention has also disclosed a kind of liquid crystal panel detection device, in order to detect liquid crystal panel, liquid crystal panel comprises one of integrated circuit, display unit (cell) and a plurality of alignment marks, liquid crystal panel removes integrated circuit in advance before detecting, pick-up unit comprises: detection platform, in order to bearing liquid crystal display panel; The contraposition module is in order to grasp alignment mark; And probe, it is connected with the contraposition module, grasps the line defect place that alignment mark is aimed at liquid crystal panel by the contraposition module, in order to importing test signal to display unit, and judges testing result according to the picture signal that display unit is exported.
Description of drawings
Fig. 1 is the synoptic diagram of known LCD.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 2 in the A part.
Fig. 4 is the structural representation of the present invention's liquid crystal panel to be detected.
Fig. 5 is the synoptic diagram at another visual angle of Fig. 4.
Fig. 6 is a liquid crystal panel detecting method process flow diagram of the present invention.
Fig. 7 is that liquid crystal panel of the present invention detects synoptic diagram.
Embodiment
About concrete technical scheme of the present invention and effect thereof, as follows with preferred embodiment and accompanying drawings.Fig. 2 is the synoptic diagram of liquid crystal panel detection device 2 of the present invention.Fig. 3 is the partial enlarged drawing of liquid crystal panel detection device 2.
Fig. 4 is the synoptic diagram of liquid crystal panel to be detected 10 of the present invention.Liquid crystal panel 10 has display unit (cell) 11, and is provided with printed circuit board (PCB) 12 in display unit 11 sides.Be connected with a plurality of integrated circuit 13 between display unit 11 and the printed circuit board (PCB) 12, be converted to 11 receptible signals of display unit in order to the external signal that printed circuit board (PCB) 12 is accepted.Integrated circuit 13 can encapsulate by coil type crystal grain joining technique (TAB), ambetti joining technique (COG) or crystal grain soft mode joining technique (COF).In addition, liquid crystal panel 10 is provided with at least one contraposition mark 14, as shown in Figure 5.
As shown in Figure 2, pick-up unit of the present invention comprises: detection platform 20, and in order to bearing liquid crystal display panel 10, wherein detection platform 20 can be an angle of inclination, judges defect cause to make things convenient for the testing staff to observe the testing result of liquid crystal panel 10; Contraposition module 21, in order to grasping the alignment mark 14 of liquid crystal panel 10, and the contraposition module comprise charge coupled cell (Charge Couple Device, CCD); And probe 22, it is connected with contraposition module 21, grasp the line defect place that alignment marks 14 are aimed at liquid crystal panel 10 by contraposition module 21, in order to importing test signal to display unit 11, and the picture signal judgement testing result of being exported according to display unit 11.
Preferred implementation of the present invention also comprises and compresses post 23, adjusts the exposure level of probe 22 and liquid crystal panel 10 in order to compress probe 22.In addition, preferred implementation of the present invention also comprises movable stand 24, in order to stationary probe 22 with compress post 23, and displacement module 25 is set on movable stand 24, in order to traveling probe 22, wherein displacement module 25 comprises worm and gear group 251.
Fig. 6 is the detection method process flow diagram of liquid crystal panel of the present invention.Liquid crystal detection method of the present invention comprises:
Step (a): remove integrated circuit 13;
Step (b): liquid crystal panel 10 is positioned on the detection platform 20;
Step (c): with the line defect place of probe 22 contact liquid crystal panels 10;
Step (d): import test signal to display unit 11 by probe 22; And
Step (e): judge testing result according to the picture signal that display unit 11 is exported.
Concrete testing process is described as follows in conjunction with Fig. 7:
As shown in Figure 7, when liquid crystal panel 10 under the situation of finding line defect, if can't judge it is that display unit 11 or integrated circuit 13 are bad, earlier integrated circuit 13 is removed on liquid crystal panel 10, again liquid crystal panel 10 is positioned on the detection platform 20.Adjust displacement module 25, make worm and gear group 251 drive probe 22 and move to the position that liquid crystal panel 10 has removed integrated circuit 13, and the alignment mark 14 that grasps liquid crystal panel 10 by contraposition module 21 carries out contraposition.After contraposition is finished, adjust the exposure level of probe 22 and liquid crystal panel 10 by compressing probe 22 again, can the test signal identical with the signal of integrated circuit 13 conversions be imported display unit 11 by probe 22, to drive display unit 11 output image signals.Unit 11 to be shown according to the test signal output image signal after, the tester is the picture signal and the reference signal of display unit 11 outputs relatively, if the picture signal of output and the comparative result of reference signal are pointed out display unit 11 for normal, judge that then integrated circuit 13 is for good; If the picture signal of display unit 11 outputs and the comparative result of reference signal are pointed out display unit 11 for unusual, judge that then display unit 11 is for bad.
According to disclosed detection method, after removing integrated circuit 13, directly import test signal to display unit 11 with probe 22, and the picture signal of being exported according to display unit 11 is judged testing result, solve known test mode because of reinstalling wastes such as manpower that integrated circuit is caused, board with this, and the test duration of minimizing liquid crystal panel, solve the too high shortcoming of known test mode testing cost simultaneously.
Though technology contents of the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art; do not breaking away from spiritual do some changes and retouching of the present invention; all should be covered by in the protection category of the present invention, so protection scope of the present invention is as the criterion when looking the accompanying Claim book.
Claims (10)
1. the detection method of a liquid crystal panel, in order to detect liquid crystal panel, this liquid crystal panel comprises integrated circuit and display unit, this detection method comprises:
(a) remove this integrated circuit;
(b) this liquid crystal panel is positioned over detection platform;
(c) contact the line defect place of this liquid crystal panel with probe, wherein grasp one of a plurality of alignment marks of this liquid crystal panel, make the line defect place of this this liquid crystal panel of probe alignment with a contraposition module;
(d) import test signal to this display unit by this probe; And
(e) picture signal of exporting according to this display unit is judged testing result, wherein relatively be somebody's turn to do the picture signal and the reference signal of output, if the comparative result of the picture signal of this output and this reference signal is pointed out this display unit for normal, judge that then this integrated circuit is for good; If the comparative result of the picture signal of this output and this reference signal is pointed out this display unit and for unusual, is judged that then this display unit is bad.
2. the pick-up unit of a liquid crystal panel, in order to detect liquid crystal panel, this liquid crystal panel comprises one of integrated circuit, display unit and a plurality of alignment marks, and this liquid crystal panel removes this integrated circuit in advance before detection, and this pick-up unit comprises:
Detection platform is in order to carry this liquid crystal panel;
The contraposition module is in order to grasp this alignment mark; And
Probe, it is connected with this contraposition module, grasps the line defect place that this alignment mark is aimed at this liquid crystal panel by this contraposition module, in order to import test signal to this display unit.
3. pick-up unit according to claim 2 is characterized in that this probe is arranged at the top of this detection platform one end.
4. pick-up unit according to claim 2 is characterized in that this contraposition module is arranged at the both sides of this probe.
5. pick-up unit according to claim 2 is characterized in that this contraposition module comprises charge coupled cell.
6. pick-up unit according to claim 2 is characterized in that this detection platform has an angle of inclination.
7. pick-up unit according to claim 2 is characterized in that also comprising displacement module, in order to move this probe.
8. pick-up unit according to claim 7 is characterized in that this displacement module comprises the worm and gear group.
9. pick-up unit according to claim 2 is characterized in that also comprising compressing post, adjusts the exposure level of this probe and this liquid crystal panel in order to compress this probe.
10. pick-up unit according to claim 9 is characterized in that also comprising movable stand, compresses post and this probe in order to fix this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101279765A CN100451742C (en) | 2007-07-06 | 2007-07-06 | Liquid crystal panel detecting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101279765A CN100451742C (en) | 2007-07-06 | 2007-07-06 | Liquid crystal panel detecting method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101071205A CN101071205A (en) | 2007-11-14 |
| CN100451742C true CN100451742C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101279765A Expired - Fee Related CN100451742C (en) | 2007-07-06 | 2007-07-06 | Liquid crystal panel detecting method and device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929005B (en) * | 2012-09-26 | 2016-03-30 | 深圳市华星光电技术有限公司 | The sniffer of TFT-LCD substrate |
| CN103345077B (en) * | 2013-06-19 | 2016-03-09 | 深圳市华星光电技术有限公司 | The quality detection device of liquid crystal display module and using method thereof |
| CN104317081A (en) | 2014-11-17 | 2015-01-28 | 合肥京东方光电科技有限公司 | Lighting device |
| CN106920493B (en) * | 2017-04-07 | 2020-12-08 | 广东江粉高科技产业园有限公司 | High-voltage output liquid crystal display Cell testing method |
| CN107068027B (en) * | 2017-05-27 | 2020-12-25 | 深圳市华星光电技术有限公司 | Liquid crystal display panel, liquid crystal display panel detection system and method |
| CN108513629A (en) * | 2017-07-26 | 2018-09-07 | 深圳市柔宇科技有限公司 | The localization method and testing element group of testing element group |
| CN108597425B (en) * | 2018-03-20 | 2021-07-23 | 武汉华星光电半导体显示技术有限公司 | Testing device and testing method for OLED display panel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996825A (en) * | 1995-09-29 | 1997-04-08 | Sharp Corp | Method and apparatus for inspecting liquid crystal display panel |
| JPH10142570A (en) * | 1996-11-08 | 1998-05-29 | Sharp Corp | Inspection device for liquid-crystal display panel |
| JP2002098934A (en) * | 2000-09-25 | 2002-04-05 | Casio Comput Co Ltd | Inspection device |
| CN1715941A (en) * | 2004-06-29 | 2006-01-04 | 联华电子股份有限公司 | Chip needle detector |
| CN1991446A (en) * | 2005-12-29 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Apparatus for examining flat panel display device and examining method thereof |
-
2007
- 2007-07-06 CN CNB2007101279765A patent/CN100451742C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0996825A (en) * | 1995-09-29 | 1997-04-08 | Sharp Corp | Method and apparatus for inspecting liquid crystal display panel |
| JPH10142570A (en) * | 1996-11-08 | 1998-05-29 | Sharp Corp | Inspection device for liquid-crystal display panel |
| JP2002098934A (en) * | 2000-09-25 | 2002-04-05 | Casio Comput Co Ltd | Inspection device |
| CN1715941A (en) * | 2004-06-29 | 2006-01-04 | 联华电子股份有限公司 | Chip needle detector |
| CN1991446A (en) * | 2005-12-29 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Apparatus for examining flat panel display device and examining method thereof |
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| Publication number | Publication date |
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| CN101071205A (en) | 2007-11-14 |
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