US4257684A
Expired / Lapsed
US
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Electrochromic segments formed on a display electrode in an electrochromic display cell
Assignee: Sharp Corp
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Filing: 1979-02-13
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Granted: 1981-03-24
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Expires: 1999-02-13
Abstract
Abstract An electrochromic display cell comprising a display electrode formed on a glass substrate, a counter electrode formed on another glass substrate, and a liquid electrolyte disposed between the two glass substrates. The display electrode comprises a transparent conductive, continuous film formed on the glass substrate, and a plurality of electrochromic (WO 3 ) segments formed on the continuous film. The electrochromic segments are spaced apart from each other with a thin gap having a width of 100 μm-- 200 μm being formed therebetween. Each electrochromic segment has a size smaller than 0.1 cm 2 .
Inventors
- 👤 Mitsuru Nishiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:54
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
An electrochromic display cell which includes at least one display electrode for displaying a desired pattern by selectively coloring or bleaching said display electrode, a counter electrode, and an electrolyte disposed between said display electrode and said counter electrode, said display electrode comprising: a continuous electrode; and an electrochromic layer formed on said continuous electrode, said electrochromic layer including a plurality of segments, each of which being spaced apart from the adjacent segment with a thin gap formed therebetween.
Claim 2
Dependent Claim
79 words
An electrochromic display cell which includes at least one display electrode for displaying a desired pattern by selectively coloring or bleaching said display electrode, a counter electrode, and an electrolyte disposed between said display electrode and said counter electrode, said display electrode comprising: a continuous electrode; and an electrochromic layer formed on said continuous electrode, said electrochromic layer including a plurality of segments, each of which being spaced apart from the adjacent segment with a thin gap formed therebetween.
Claim 3
Dependent Claim
16 words
The electrochromic display cell of claim 1, wherein said continuous electrode comprises a transparent continuous electrode.
Claim 4
Dependent Claim
17 words
The electrochromic display cell of claim 2, wherein said transparent continuous electrode comprises a tin oxide film.
Claim 5
Dependent Claim
17 words
The electrochromic display cell of claim 2, wherein said transparent continuous electrode comprises an indium oxide film.
Claim 6
Dependent Claim
19 words
The electrochromic display cell of claim 1, 2, 3 or 4, wherein said electrochromic layer comprises tungsten oxide films.
Claim 7
Dependent Claim
20 words
The electrochromic display cell of claim 5, wherein said thin gap has a width of 100 μm to 200 μm.
Claim 8
Dependent Claim
24 words
The electrochromic display cell of claim 4, wherein one discrete segment of the electrochromic layer has a size smaller than 0.1 cm 2 .
References Cited (Backward Citations)
US4076386A
Cited
US4139275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |