US4231641A
Expired / Lapsed
US
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Electro-optic device
Assignee: ETS SA A SWISS CORP
•
Filing: 1978-09-27
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Granted: 1980-11-04
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Expires: 1998-09-27
Abstract
Abstract An electro-optic device comprising a transparent conductive layer, an electrochromic layer applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode maintained at distance from the said first electrode, and an electrolyte ensuring an ionic binding between the electrode and the counter-electrode. Preferably, the electrolyte is a polymer of linear molecules such as polystyrene sulfonic acid including a pigment. A combination cell of a perfluorosulfonic acid polymer membrane and polystyrene sulfonic acid is disclosed.
Inventors
- 👤 Jean-Paul Randin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
97 words
Electro-optic device comprising a transparent conductive layer, an electrochromic layer applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode maintained at distance from the said first electrode, and an electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of solid or pasty organic material constituted by at least a polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
Claim 2
Dependent Claim
97 words
Electro-optic device comprising a transparent conductive layer, an electrochromic layer applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode maintained at distance from the said first electrode, and an electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of solid or pasty organic material constituted by at least a polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
Claim 3
Dependent Claim
22 words
Electro-optic device as claimed in claim 1, characterized by the fact that the molecular weight of the electrolyte is higher than 1000.
Claim 4
Dependent Claim
19 words
Electro-optic device as claimed in claim 1, characterized by the fact that the electrolyte is constituted by linear molecules.
Claim 5
Dependent Claim
19 words
Electro-optic device as claimed in claim 1, characterized by the fact that the electrolyte is constituted by cross-linked molecules.
Claim 6
Dependent Claim
16 words
Electro-optic device as claimed in claim 1, characterized by the fact that the electrolyte is homogeneous.
Claim 7
Dependent Claim
16 words
Electro-optic device as claimed in claim 1, characterized by the fact that the electrolyte is heterogeneous.
Claim 8
Dependent Claim
21 words
Electro-optic device as claimed in claim 1, characterized by the fact that the polymer constituting the electrolyte is in acid form.
Claim 9
Dependent Claim
21 words
Electro-optic device as claimed in claim 1, characterized by the fact that the polymer constituting the electrolyte is in salt form.
Claim 10
Dependent Claim
18 words
Electro-optic device as claimed in claim 7, characterized by the fact that the polymer is polystyrene sulfonic acid.
Claim 11
Dependent Claim
17 words
Electro-optic device as claimed in claim 7, characterized by the fact that the polymer is polyacrylic acid.
Claim 12
Dependent Claim
17 words
Electro-optic device as claimed in claim 7, characterized by the fact that the polymer is polymethacrylic acid.
Claim 13
Dependent Claim
18 words
Electro-optic device as claimed in claim 7, characterized by the fact that the polymer is phenol sulfonic acid.
Claim 14
Dependent Claim
21 words
Electro-optic device as claimed in claim 1, characterized by the fact that the polymer constituting the electrolyte in a base form.
Claim 15
Dependent Claim
19 words
Electro-optic device as claimed in claim 13, characterized by the fact that the polymer is a quaternary ammonium salt.
Claim 16
Dependent Claim
22 words
Electro-optic device as claimed in claim 1, characterized by the fact that the polymer contains a liquid having a high dielectric constant.
Claim 17
Dependent Claim
17 words
Electro-optic device as claimed in claim 1, characterized by the fact that the polymer contains a pigment.
Claim 18
Dependent Claim
42 words
Electro-optic device as claimed in claim 16, characterized by the fact that it is constituted by a cell having only one compartment filled with the electrolyte containing several pigments of different colors in different areas so as to produce a multicolored display.
Claim 19
Dependent Claim
29 words
Electro-optic device as claimed in claim 1, characterized by the fact that its electrode is constituted by an electrochromic material suitable for forming a bronze of a transition metal.
Claim 20
Dependent Claim
28 words
Electro-optic device as claimed in claim 18, characterized by the fact that its counter-electrode is constituted by the same electro-chromic material as the electrode in the reduced state.
Claim 21
Dependent Claim
20 words
Electro-optic device as claimed in claim 1, characterized by the fact that its counter-electrode is made of finely divided carbon.
Claim 22
Dependent Claim
24 words
Electro-optic device as claimed in claim 1, characterized by the fact that it comprises a film of ion-exchange polymers deposited on the electrochromic layer.
Claim 23
Dependent Claim
25 words
Electro-optic device as claimed in claim 21, characterized by the fact that the electrolyte ensures the ionic binding between the said film and the counter-electrode.
Claim 24
Dependent Claim
29 words
Electro-optic device as claimed in claim 1, characterized by the fact that it comprises a film of ion-exchange polymers deposited on the layer constituting the auxiliary electrode or counter-electrode.
Claim 25
Dependent Claim
22 words
Electro-optic device as claimed in claim 21, in which a second film of ion-exchange polymer constituted by a perfluorosulfonic acid is employed.
Claim 26
Dependent Claim
20 words
Electro-optic device as claimed in claim 21 in which the electrolyte is a cation exchange polymer in a pasty state.
Claim 27
Dependent Claim
22 words
Electro-optic device as claimed in claim 23 in which a second film of ion-exchange polymer constituted by a perfluorosulfonic acid is used.
Claim 28
Dependent Claim
20 words
Electro-optic device as claimed in claim 23 in which the electrolyte is a cation exchange polymer in a pasty state.
Claim 29
Dependent Claim
88 words
Electro-optic device comprising a transparent conductive layer, an electrochromic coating applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode and an electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of an elastomeric organic material constituted by at least a polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
Claim 30
Dependent Claim
88 words
Electro-optic device comprising a transparent conductive layer, an electrochromic coating applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode and an electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of an elastomeric organic material constituted by at least a polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
Claim 31
Dependent Claim
29 words
Electro-optic device as claimed in claim 1, characterized by the fact that its counter electrode is constituted by an electro-chromic material which is different from this of the electrode.
Claim 32
Dependent Claim
99 words
Electro-optic device comprising a transparent conductive layer, an electrochromic coating applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode of a material different from the first electrode and a homogenous electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of an elastomeric organic material constituted by at least a linear acidic polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
Claim 33
Dependent Claim
99 words
Electro-optic device comprising a transparent conductive layer, an electrochromic coating applied on the said transparent layer, these two first elements constituting together a first electrode, a counter-electrode of a material different from the first electrode and a homogenous electrolyte ensuring an ionic binding between the electrode and the counter-electrode, characterized by the fact that the said electrolyte is made of an elastomeric organic material constituted by at least a linear acidic polymer comprising ionic groups of the type used as ion-exchange materials, the said material of the electrolyte being chemically stable and compatible with that of the electrochromic layer.
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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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |