Patent US4153344A successfully refreshed from Google Patents.
US4153344A
Expired / Lapsed
US
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Lead-in electrode structure for electrochromic displays of the segmented type
Assignee: Sharp Corp
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Filing: 1977-07-13
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Granted: 1979-05-08
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Expires: 1997-07-13
Abstract
Abstract An electro-optical display comprises an electrochromic material and a predetermined number of display segments, each combination of the display segments defining a different desired display pattern. Lead-in electrodes connected to the respective display segments for driving purposes are shaped in such a manner as to have resistance values inversely proportional to the size of the corresponding display segments.
Inventors
- 👤 Hiroshi Hamada
- 👤 Hiroshi Nakauchi
- 👤 Tadanori Hishida
- 👤 Kozo Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:11
CPC Classifications
G; G04; G04G; G04G9/00; G04G9/08; G04G9/12; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/155
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
In an electrochromic display device including two substrates, display segments formed on one of said two substrates, a counter electrode formed on the other of said two substrates, and an electrochromic material for coloring said display segments upon receiving a predetermined current or voltage, the improvement comprising: terminals formed on said one of said two substrates for connecting the electrochromic display device to a driver circuit; and lead-in electrodes for connecting said display segments to corresponding terminals, said lead-in electrodes being shaped in such a manner as to have resistance values inversely proportional to the size of the corresponding display segments.
Claim 2
Dependent Claim
101 words
In an electrochromic display device including two substrates, display segments formed on one of said two substrates, a counter electrode formed on the other of said two substrates, and an electrochromic material for coloring said display segments upon receiving a predetermined current or voltage, the improvement comprising: terminals formed on said one of said two substrates for connecting the electrochromic display device to a driver circuit; and lead-in electrodes for connecting said display segments to corresponding terminals, said lead-in electrodes being shaped in such a manner as to have resistance values inversely proportional to the size of the corresponding display segments.
Claim 3
Dependent Claim
27 words
The electrochromic display device of claim 1, wherein the display segments define a seven segmented numeral pattern, and every display segment does not have the same size.
Claim 4
Dependent Claim
19 words
The electrochromic display device of claim 1, wherein the lead-in electrodes are made of In 2 O 3 film.
References Cited (Backward Citations)
US4086003A
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 |