JPS554034A - Defect checking method of optical display cell - Google Patents
Defect checking method of optical display cellInfo
- Publication number
- JPS554034A JPS554034A JP7626478A JP7626478A JPS554034A JP S554034 A JPS554034 A JP S554034A JP 7626478 A JP7626478 A JP 7626478A JP 7626478 A JP7626478 A JP 7626478A JP S554034 A JPS554034 A JP S554034A
- Authority
- JP
- Japan
- Prior art keywords
- cells
- electrodes
- defective
- check
- fail
- 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
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To improve production efficiency by beforehand forming the check wirings for commonly connecting respective electrodes to electrode substrates and detecting defective cells before the separation of cell assembly blanks.
CONSTITUTION: Respective electrodes 2, 3 of cell blocks A, B, C, D are beforehand commonly connected by way of check wirings a, b, c and voltage is simultaneously applied between all the electrodes 2, 3 of the cells corresponding to the blocks A thru D. In this case, all the cells assume the sate of displaying a figure "8" and therefore the cells which fail to perfectly display to visual check "8" (lead disconnection of segment electrodes) or fail to display the same at all (lead disconnection of common electrodes), etc. are detected and are judged to be defectives. The cell assembly blank having undergone defective checking is divided along dividing lines 12 to individual cells, after which the non-defective cells are sent to the next process, where they are subjected to sealing of liquid crystal injection ports, etc., whereby they are made to finished products. Since in this way defective checking is accomplished in the intermediate process, the efficiency of production may be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7626478A JPS554034A (en) | 1978-06-23 | 1978-06-23 | Defect checking method of optical display cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7626478A JPS554034A (en) | 1978-06-23 | 1978-06-23 | Defect checking method of optical display cell |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS554034A true JPS554034A (en) | 1980-01-12 |
Family
ID=13600357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7626478A Pending JPS554034A (en) | 1978-06-23 | 1978-06-23 | Defect checking method of optical display cell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554034A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02222925A (en) * | 1988-11-07 | 1990-09-05 | Matsushita Electric Ind Co Ltd | Production of liquid crystal panel |
JPH05341246A (en) * | 1992-06-11 | 1993-12-24 | Sharp Corp | Manufacture of matrix type display element |
US5684546A (en) * | 1994-10-06 | 1997-11-04 | Samsung Electronics Co., Ltd. | Electrostatic discharge protective circuit in a liquid crystal display |
JP2007232767A (en) * | 2006-02-27 | 2007-09-13 | Bridgestone Corp | Mother substrate for information display |
-
1978
- 1978-06-23 JP JP7626478A patent/JPS554034A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02222925A (en) * | 1988-11-07 | 1990-09-05 | Matsushita Electric Ind Co Ltd | Production of liquid crystal panel |
JPH05341246A (en) * | 1992-06-11 | 1993-12-24 | Sharp Corp | Manufacture of matrix type display element |
US5684546A (en) * | 1994-10-06 | 1997-11-04 | Samsung Electronics Co., Ltd. | Electrostatic discharge protective circuit in a liquid crystal display |
JP2007232767A (en) * | 2006-02-27 | 2007-09-13 | Bridgestone Corp | Mother substrate for information display |
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