US4153345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic display device
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1977-05-16
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Granted: 1979-05-08
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Expires: 1997-05-16
Abstract
Abstract A cell illuminated by a light source is constituted by an electrolyte containing metallic ions and interposed between a first wall coated with a first transparent conductive film which forms a display electrode and a second wall coated with a second conductive film which forms a counter-electrode. Deposition or dissolution of an absorbent metallic thin film less than 10 nm in thickness is carried out on the display electrode by electrochemical reaction.
Inventors
- 👤 Jacques Duchene
- 👤 Robert Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533; G02F1/1506
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
In an electrolytic display device of the type comprising a light source for illuminating a cell formed: by an electrolyte containing metallic ions interposed between a first wall coated with a first transparent conductive film-layer forming an electrode having a suitable shape for display and a second wall coated with a second conductive film-layer forming a counter-electrode, and by means for supplying electric current to said electrodes in order to induce deposition or dissolution of a deposited metallic film-layer on said electrode by electrochemical reaction from said ions; the improvement wherein said deposited metallic film-layer is an illuminating light-absorbent thin film having a thickness of less than approximately 10 nm.
Claim 2
Dependent Claim
110 words
In an electrolytic display device of the type comprising a light source for illuminating a cell formed: by an electrolyte containing metallic ions interposed between a first wall coated with a first transparent conductive film-layer forming an electrode having a suitable shape for display and a second wall coated with a second conductive film-layer forming a counter-electrode, and by means for supplying electric current to said electrodes in order to induce deposition or dissolution of a deposited metallic film-layer on said electrode by electrochemical reaction from said ions; the improvement wherein said deposited metallic film-layer is an illuminating light-absorbent thin film having a thickness of less than approximately 10 nm.
Claim 3
Dependent Claim
12 words
The improvement according to claim 1, wherein said metallic film-layer is silver.
Claim 4
Dependent Claim
19 words
The improvement according to claim 1, wherein the cell walls are transparent and the device accordingly operates in transmission.
Claim 5
Dependent Claim
27 words
The improvement according to claim 1, wherein one of the cell walls is coated with a reflecting or scattering film and the device accordingly operates in reflection.
Claim 6
Dependent Claim
19 words
The improvement according to claim 2, wherein the cell walls are transparent and the device accordingly operates in transmission.
Claim 7
Dependent Claim
27 words
The improvement according to claim 2, wherein one of the cell walls is coated with a reflecting or scattering film and the device accordingly operates in reflection.
References Cited (Backward Citations)
US3153113A
Cited
US3995940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |