US4448493A
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Electrochromic display device
Assignee: Toppan Inc
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Filing: 1982-02-24
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Granted: 1984-05-15
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Expires: 2002-02-24
Abstract
Abstract Disclosed is an electrochromic display device having an electrochromic layer and a solid proton conductive layer between a transparent electrode and a counter electrode. The main component of the solid proton conductive layer is a mixture of at least one of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid and silicic acid. The response time is shortened, the service life is prolonged, and printing may be adopted for formation of cells.
Inventors
- 👤 Nagahisa Matsudaira
- 👤 Kaneki Yoshida
- 👤 Kenzo Fukuyoshi
- 👤 Kiyoshi Masui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533; G02F1/1514; G02F1/1523; G02F1/1525
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid and mixtures thereof.
Claim 2
Dependent Claim
68 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid and mixtures thereof.
Claim 3
Dependent Claim
61 words
An electrochromic display device according to claim 1, wherein said solid proton conductive layer contains 0.5 to 30% by weight, based on a weight of the main component of said proton conductive layer, of a polyhydric alcohol which has an evaporation pressure of not higher than 0.1 mmHg at 20° C. and which is in liquid phase in the ordinary form.
Claim 4
Dependent Claim
26 words
An electrochromic display device according to claim 1, wherein said solid proton conductive layer contains a carboxyl group-containing polymer of aqueous emulsion type as a binder.
Claim 5
Dependent Claim
26 words
An electrochromic display device according to claim 1, wherein said solid proton conductive layer contains a sulfonic acid group-containing polymer of water-soluble type as a binder.
Claim 6
Dependent Claim
43 words
An electrochromic display device according to claim 1, wherein said solid proton conductive layer contains as the main component a mixture of an antimonic acid having an oxidation number of 5 and an antimonic acid having an oxidation number of less than 5.
Claim 7
Dependent Claim
75 words
An electrochromic display device according to claim 1, wherein said solid proton conductive layer is formed by printing or applying and drying an ink which contains, as the main component, a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; a binder comprising a polyhydric alcohol and/or a water-soluble polymer or an aqueous emulsion type polymer; and a volatile solvent.
Claim 8
Dependent Claim
26 words
An electrochromic display device according to claim 1, wherein said counter electrode is of two-layered structure consisting of a reversible oxidation-reduction material layer and a collector.
Claim 9
Dependent Claim
57 words
An electrochromic display device according to claims 1 or 7, wherein said reversible oxidation-reduction material layer of said counter electrode consists of a carbon powder as a conductive filler, a synthetic resin binder and a reversible oxidation-reduction material; and said reversible oxidation-reduction material layer is formed by printing or applying next to said solid proton conductive layer.
Claim 10
Dependent Claim
97 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer interposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; said electrochromic layer is formed partially according to a display pattern; and an insulating layer is formed at a non-display part at which said electrochromic layer is not formed.
Claim 11
Dependent Claim
97 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer interposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; said electrochromic layer is formed partially according to a display pattern; and an insulating layer is formed at a non-display part at which said electrochromic layer is not formed.
Claim 12
Dependent Claim
15 words
An electrochromic display device according to claim 9, wherein said insulating layer contains a colorant.
Claim 13
Dependent Claim
17 words
An electrochromic display device according to claim 9, wherein said solid proton conductive layer contains a colorant.
Claim 14
Dependent Claim
90 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; and at least one of said transparent electrode and said counter electrode is formed in a matrix pattern for performing matrix display.
Claim 15
Dependent Claim
90 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; and at least one of said transparent electrode and said counter electrode is formed in a matrix pattern for performing matrix display.
Claim 16
Dependent Claim
34 words
An electrochromic display device according to claim 12, wherein said electrochromic layers and said solid proton conductive layers are formed in a matrix form in correspondence with said electrode formed in a matrix form.
Claim 17
Dependent Claim
86 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; and said transparent electrode and said counter electrode are formed in an X-Y coordinate pattern for matrix display.
Claim 18
Dependent Claim
86 words
An electrochromic display device having at least an electrochromic layer containing a transition metal oxide and a solid proton conductive layer disposed between a transparent electrode and a counter electrode, characterized in that a main component of said solid proton conductive layer is a member selected from the group consisting of titanic acid, stannic acid, antimonic acid, zirconic acid, niobic acid, tantalic acid, silicic acid, and mixtures thereof; and said transparent electrode and said counter electrode are formed in an X-Y coordinate pattern for matrix display.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |