Patent US3748017A successfully refreshed from Google Patents.
US3748017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for liquid crystal display device
Assignee: Individual
•
Filing: 1971-05-26
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Granted: 1973-07-24
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Expires: 1991-05-26
Abstract
Abstract In a liquid crystal display device, gases, and in particular, H2 and O2 may be generated. Deleterious effects are avoided by incorporating in at least one of the electrodes a catalyst for the recombination of said gases.
Inventors
- 👤 K Yamamura
- 👤 K Kubota
- 👤 I Nishimura
- 👤 K Kakizawa
- 👤 Y Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; G01; G01R; G01R13/00; G01R13/40; G01R13/404; G01R13/407; G04; G04G; G04G9/00; G04G9/0082; G04G9/0094
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
A display device as defined in claim 1, wherein the other of said electrodes is transparent.
Claim 2
Dependent Claim
31 words
A display device as defined in claim 1, wherein said device has indicia thereon, said indicia being individually susceptible to change in appearance by imposition of said voltage across said electrodes.
Claim 3
Dependent Claim
14 words
A display device as defined in claim 3, wherein said device is an instrument.
Claim 4
Dependent Claim
14 words
A display device as defined in claim 3, wherein said device is a watch.
Claim 5
Dependent Claim
82 words
A display device comprising a liquid crystal material, electrodes across which a voltage may be applied and an insulating spacer, said electrodes and said spacer forming a vessel containing said material, said applied voltage serving to scatter light, said material generating hydrogen and oxygen gases on the application of said voltage, and at least one of said electrodes comprising a material selected from the group consisting of platinum black and paladium black as a catalyst effective for the recombination of said gases.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |