Patent US5146301A successfully refreshed from Google Patents.
US5146301A
Expired / Lapsed
US
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Terminal electrode structure of a liquid crystal panel display
Assignee: Sharp Corp
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Filing: 1988-10-14
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Granted: 1992-09-08
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Expires: 2008-10-14
Abstract
Abstract A liquid-crystal panel includes a plurality of thin-film transistors. Terminal electrodes associated with gate bus lines which connect the gate electrodes of the thin-film transistors include a layer that is made of an electrode material used for the gate electrode, and a transparent conductive coating formed on the layer. This structure produces a stable connection at the terminal electrode of the gate electrode providing the liquid-crystal panel with excellent display qualities and a high reliability.
Inventors
- 👤 Keiji Yamamura
- 👤 Takashi Nukii
- 👤 Shigeo Nakabu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:14
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13458; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A liquid-crystal panel comprising: a plurality of rows of thin-film transistors each of said thin-film transistors having a gate electrode associated therewith; a plurality of gate bus lines corresponding to said plurality of rows, the gate electrodes of said thin-film transistors in each of said plurality of rows electrically connected to a gate bus line; a plurality of terminal electrodes connected to the terminating ends of each of said plurality of gate bus lines; a transparent conductive coating disposed over in direct contact with said plurality of terminal electrodes; said thin-film transistors having a gate insulator film and an amorphous semiconductor layer formed thereon; wherein said gate insulator film comprises an anodic oxidation film disposed on said gate electrodes and a protective insulator film disposed on said anodic oxidation film.
Claim 2
Dependent Claim
130 words
A liquid-crystal panel comprising: a plurality of rows of thin-film transistors each of said thin-film transistors having a gate electrode associated therewith; a plurality of gate bus lines corresponding to said plurality of rows, the gate electrodes of said thin-film transistors in each of said plurality of rows electrically connected to a gate bus line; a plurality of terminal electrodes connected to the terminating ends of each of said plurality of gate bus lines; a transparent conductive coating disposed over in direct contact with said plurality of terminal electrodes; said thin-film transistors having a gate insulator film and an amorphous semiconductor layer formed thereon; wherein said gate insulator film comprises an anodic oxidation film disposed on said gate electrodes and a protective insulator film disposed on said anodic oxidation film.
Claim 3
Dependent Claim
24 words
A liquid-crystal panel according to claim 1, wherein said gate electrode comprises Ta and said anodic oxidation film comprises Ta 2 O 5 .
Claim 4
Dependent Claim
35 words
A liquid-crystal panel according to claim 1, wherein said protective insulator film comprises Si 3 N 4 , SiO, SiO 2 , Y 2 O 3 , Al 2 O 3 or MgF 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |