US4594482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Input element with improved appearance and reliability
Assignee: Canon Inc
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Filing: 1985-01-17
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Granted: 1986-06-10
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Expires: 2005-01-17
Abstract
Abstract An input element which comprises a pair of transparent substrates, of which at least one is flexible, each having electrodes of transparent electroconductive film on its surface, being arranged in confrontation with the surface provided with the electrodes facing each other with a space therebetween, and a first spacer being arranged at the peripheral portions of the pair of substrates to hold the space, wherein a reflective convex second spacers in dot are provided on the lower substrate all over the inside surface of the element.
Inventors
- 👤 Tetsuro Saito
- 👤 Akihiko Komura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; H01H13/702; H01H13/703; H01H2201/00; H01H2201/022; H01H2201/026; H01H2201/028; H01H2209/00; H01H2209/024; H01H2209/038; H01H2209/04; H01H2209/046; H01H2209/06; H01H2209/068; H01H2209/082; H01H2211/00; H01H2211/006; H01H2211/01; H01H2219/00; H01H2219/054; H01H2219/066; H01H2227/00; H01H2227/024; H01H2229/00; H01H2229/058; H01H2239/00; H01H2239/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A panel switch, comprising a pair of transparent substrates one of which is flexible and comprises a flexible film and the other of which comprises a glass plate, each having electrodes of transparent electroconductive film on one surface, being arranged in confrontation with each other in such a manner that the surfaces provided with the electrodes face each other with a space therebetween, and a first spacer arranged at the peripheral portions of said pair of substrates to maintain said space, and reflective convex second spacers provided in dot form all over said one surface of said glass plate except for where the transparent electroconductive film is formed.
Claim 2
Dependent Claim
108 words
A panel switch, comprising a pair of transparent substrates one of which is flexible and comprises a flexible film and the other of which comprises a glass plate, each having electrodes of transparent electroconductive film on one surface, being arranged in confrontation with each other in such a manner that the surfaces provided with the electrodes face each other with a space therebetween, and a first spacer arranged at the peripheral portions of said pair of substrates to maintain said space, and reflective convex second spacers provided in dot form all over said one surface of said glass plate except for where the transparent electroconductive film is formed.
Claim 3
Dependent Claim
21 words
A panel switch according to claim 1, wherein the second spacers are formed of a resin having a high refractive index.
Claim 4
Dependent Claim
19 words
A panel switch according to claim 2, wherein said resin with a high refractive index is a silicone resin.
Claim 5
Dependent Claim
21 words
A panel switch according to claim 1, wherein said second spacers are formed to a height of from 10 to 20μ.
Claim 6
Dependent Claim
22 words
A panel switch according to claim 1, wherein said space is formed to define an electrode distance of from 50μ to 200μ.
Claim 7
Dependent Claim
16 words
A panel switch according to claim 1, wherein said flexible substrate is a polyethylene terephthalate film.
Claim 8
Dependent Claim
18 words
A panel switch according to claim 1, wherein said second spacers are formed from a urethane type adhesive.
References Cited (Backward Citations)
US4010311A
Cited
US4423299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |