US4975145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing liquid crystal device having electrode strips of no use
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1990-01-26
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Granted: 1990-12-04
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Expires: 2010-01-26
Abstract
Abstract An improved liquid crystal device for display is disclosed. The device is comprised of a pair of substrates on whose insides a number of electrode strips are formed in a matrix. The electrode strips are formed also near the periphery portions of the substrates which are unnecessary for the pixcels of the display. By virtue of the excess electrode strips, joining the substrates can be done without special attention to the coincidence of the substrates.
Inventors
- 👤 Shunpei Yamazaki
- 👤 Akira Mase
- 👤 Hiroyuki Sakayori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:26
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; C; C09; C09K; C09K2323/00; C09K2323/04; C09K2323/05; G02F1/1339
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A method of manufacturing a liquid crystal device comprising the steps of: coating a first substrate with a conductive film; scribing said conductive film with an eximer laser to form on the surface of said first substrate a plurality of first electrode strips elongated along an X direction; coating a second substrate with a conductive film; forming from the conductive film on the second substrate a plurality of second electrode strips elongated along a Y direction; and joining said first and second substrates with the first and second electrode strips facing each other with a liquid crystal layer in between where the perimeter of the substrates is sealed.
Claim 2
Independent Claim
108 words
A method of manufacturing a liquid crystal device comprising the steps of: coating a first substrate with a conductive film; scribing said conductive film with an eximer laser to form on the surface of said first substrate a plurality of first electrode strips elongated along an X direction; coating a second substrate with a conductive film; forming from the conductive film on the second substrate a plurality of second electrode strips elongated along a Y direction; and joining said first and second substrates with the first and second electrode strips facing each other with a liquid crystal layer in between where the perimeter of the substrates is sealed.
Claim 3
Dependent Claim
45 words
A method as in claim 1 where said laser scribing of the conductive film of the first substrate is so effected that the width of each electrode strip is more narrow at at least end thereof relative to an intermediate portion of the electrode strip.
Claim 4
Dependent Claim
107 words
A method as in claim 2 where said eximer laser scribing of the conductive film of the first substrate is implemented by providing a laser beam elongated in the direction of said electrode strips and passing said beam through an opening in a mask where the opening is elongated in the elongated direction of the beam and includes two end portions and an intermediate portion between the end portions and where the width of at least one end portion of the mask opening in a direction substantially perpendicular to the elongated direction of the opening is greater than the width of the central portion of the opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |