US4076386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented electrochromic display general
Assignee: Wyeth Holdings LLC
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Filing: 1976-03-03
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Granted: 1978-02-28
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Expires: 1996-03-03
Abstract
Abstract Disclosed is a segmented electrochromic display and imaging device which provides for the operation of separate discrete display segments within a unitary structure formed by sandwich arrangement of imaging elements, a common counter-electrode and a common electrolyte layer. The device can be used for animated pictorial information and alpha numeric information.
Inventors
- 👤 Robert Domenico Giglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/24; G02; G02F; G02F1/00; G02F1/01; G02F1/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A variable information display device which comprises a light transmitting substrate having multiple separate discrete segments of persistent electrochromic material as a light modulating medium, a common counter electrode, and a common layer of an ion conducting material in contact with said electrochromic material and said counter-electrode, said segments being arranged so as to display variable animated pictorial arrangements when selected segments are in a bleached or colored state, electrode means connected to each segment, and an electrical source to power each segment selectively so as to display desired arrangements.
Claim 2
Dependent Claim
90 words
A variable information display device which comprises a light transmitting substrate having multiple separate discrete segments of persistent electrochromic material as a light modulating medium, a common counter electrode, and a common layer of an ion conducting material in contact with said electrochromic material and said counter-electrode, said segments being arranged so as to display variable animated pictorial arrangements when selected segments are in a bleached or colored state, electrode means connected to each segment, and an electrical source to power each segment selectively so as to display desired arrangements.
Claim 3
Dependent Claim
12 words
The device of claim 1, wherein said counter-electrode includes persistent electrochromic material.
Claim 4
Dependent Claim
15 words
The device of claim 2, wherein the electrochromic materials in each said layer are identical.
Claim 5
Dependent Claim
15 words
The device of claim 1, wherein at least one of the electrodes is substantially transparent.
Claim 6
Dependent Claim
13 words
The device of claim 3, wherein said electrochromic materials are WO 3 .
Claim 7
Dependent Claim
13 words
A device as in claim 1, wherein said electrolyte contains a gelling agent.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |