US4306774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state electrochromic display
Assignee: Boeing North American Inc
•
Filing: 1979-07-19
•
Granted: 1981-12-22
•
Expires: 1999-07-19
Abstract
Abstract This invention is directed to a multicolored display which is based upon the rare-earth dipthalocyanines, and having a protonconductive, solid electrolyte which is selected for the electrochemical compatibility thereof with the electrochromic material in the display. Typically, the solid electrolyte consists of hydrogen uranyl phosphate or a related heteropoly acid.
Inventors
- 👤 Margie W. Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533; G02F1/1514; G02F1/1516; G02F1/1523; G02F1/1525; G02F1/155
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
An electrochromic display cell comprising: a pair of enclosure plates, at least one of which is transparent; a counter electrode and a display electrode disposed between said enclosure plates; a layer of electrochromic material disposed on said display electrode, said layer of electrochromic material being selected from the group consisting of a diphthalocyanine of a rare-earth element, yttrium, and scandium; and a solid electrolyte material disposed between said counter electrode and said display electrode, said electrolyte material being selected from the group consisting of a heteropoly acid, and hydrogen uranyl phosphate (HUO 2 PO r .4H 2 O).
Claim 2
Dependent Claim
98 words
An electrochromic display cell comprising: a pair of enclosure plates, at least one of which is transparent; a counter electrode and a display electrode disposed between said enclosure plates; a layer of electrochromic material disposed on said display electrode, said layer of electrochromic material being selected from the group consisting of a diphthalocyanine of a rare-earth element, yttrium, and scandium; and a solid electrolyte material disposed between said counter electrode and said display electrode, said electrolyte material being selected from the group consisting of a heteropoly acid, and hydrogen uranyl phosphate (HUO 2 PO r .4H 2 O).
Claim 3
Dependent Claim
20 words
The display cell recited in claim 1 including: power supply means connected between said counter electrode and said display electrode.
References Cited (Backward Citations)
US4006585A
Cited
US4013343A
Cited
US3971624A
Cited
US4009936A
Cited
JPS51106683A
Cited
US3995943A
Cited
JPS5311891A
Cited
US4106862A
Cited
US4150879A
Cited
DE2756551A1
Cited
US4184751A
Cited
US4110259A
Cited
US4163982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |