US4116546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic device with cationic ion exchange resin separator
Assignee: Timex Group USA Inc
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Filing: 1977-04-27
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Granted: 1978-09-26
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Expires: 1997-04-27
Abstract
Abstract An electrochromic display device in layered form having a first transparent substrate with a selectively actuable transparent electrode thereon and a first electrochromic layer on said transparent electrode, in combination with a counterelectrode having a second electrochromic layer thereon, and a solid electrolyte-separator layer between said first and said second electrochromic layers, said electrolyte-separator being comprised of a cationic ion exchange resin, specifically, a membrane of the acid form of a soluble polystyrene sulfonic acid polymer chemically wetted with water.
Inventors
- 👤 Marshall Leibowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
An electrochromic display device comprising in layered form, a first transparent substrate with a selectively actuatable transparent electrode thereon and a first electrochromic layer on said transparent electrode, a counterelectrode having a second electrochromic layer thereon, with an electrolyte-separator layer between said electrochromic layers, wherein the improvement comprises a solid electrolyte-separator comprised of a soluble polymer cationic ion exchange resin in the acid form, chemically wetted.
Claim 2
Dependent Claim
66 words
An electrochromic display device comprising in layered form, a first transparent substrate with a selectively actuatable transparent electrode thereon and a first electrochromic layer on said transparent electrode, a counterelectrode having a second electrochromic layer thereon, with an electrolyte-separator layer between said electrochromic layers, wherein the improvement comprises a solid electrolyte-separator comprised of a soluble polymer cationic ion exchange resin in the acid form, chemically wetted.
Claim 3
Dependent Claim
23 words
An electrochromic display device in accordance with claim 1 wherein said resin comprises a soluble polystyrene sulfonic acid polymer cationic ion exchange resin.
Claim 4
Dependent Claim
35 words
An electrochromic display device in accordance with claim 2 wherein said first electrochromic layer comprises tungsten (VI) oxide, and said second electrochromic layer comprises tungsten oxide heat treated in a hydrogen or forming gas atmosphere.
Claim 5
Dependent Claim
37 words
An electrochromic display device in accordance with claim 2 wherein said first electrochromic layer comprises tungsten (VI) oxide and said second electrochromic layer comprises tungsten surface oxidized and heat treated in a hydrogen or forming gas atmosphere.
Claim 6
Dependent Claim
30 words
An electrochromic display device in accordance with claim 3 wherein the thicknesses of said first electrochromic layer said said second electrochromic layer are on the ratio of 1:5 at least.
Claim 7
Dependent Claim
30 words
An electrochromic display device in accordance with claim 4 wherein the thicknesses of said first electrochromic layer and said second electrochromic layer are on the ratio of 1:5 at least.
Claim 8
Dependent Claim
25 words
An electrochromic display device in accordance with claim 3 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
Claim 9
Dependent Claim
32 words
An electrochromic display device in accordance with claim 3 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
Claim 10
Dependent Claim
25 words
An electrochromic display device in accordance with claim 4 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
Claim 11
Dependent Claim
32 words
An electrochromic display device in accordance with claim 4 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
Claim 12
Dependent Claim
25 words
An electrochromic display device in accordance with claim 5 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
Claim 13
Dependent Claim
32 words
An electrochromic display device in accordance with claim 6 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
References Cited (Backward Citations)
US3879108A
Cited
US3840288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |