US4140372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive electro-optic display cell and method for its manufacturing
Assignee: ETS SA A SWISS CORP
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Filing: 1977-06-21
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Granted: 1979-02-20
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Expires: 1997-06-21
Abstract
Abstract An electro-optic passive display cell with a transparent plate having an inner face and a transparent electrically insulating coating applied to said inner face. Electrically conductive electrodes and leads are formed in the coating by ion implantation. The coating is electrically insulating within the cell except in the locations in which said electrodes and leads are formed.
Inventors
- 👤 Eric Saurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:02
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133345; G02F1/0102; G02F1/1343; G02F1/13439; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
73 words
An electro-optic passive display cell comprising, at least one transparent plate having an inner face, a transparent electrically insulating coating applied to said inner face, electrically conductive electrodes and leads formed in said coating by ion implantation, the coating having the same index of refraction and same thickness as said electrodes and leads, the coating being electrically insulating within the cell except in the locations in which said electrodes and leads are formed.
Claim 2
Dependent Claim
73 words
An electro-optic passive display cell comprising, at least one transparent plate having an inner face, a transparent electrically insulating coating applied to said inner face, electrically conductive electrodes and leads formed in said coating by ion implantation, the coating having the same index of refraction and same thickness as said electrodes and leads, the coating being electrically insulating within the cell except in the locations in which said electrodes and leads are formed.
Claim 3
Dependent Claim
23 words
A display cell as claimed in claim 1 wherein the electrodes and leads are formed by areas of the coating which are doped.
Claim 4
Dependent Claim
15 words
A display cell as claimed in claim 1 wherein the coating is a metallic oxide.
Claim 5
Dependent Claim
16 words
A display cell as claimed in claim 3 wherein the coating is an oxide of tin.
Claim 6
Dependent Claim
25 words
A display cell as claimed in claim 4 wherein the electrodes and leads are formed by areas of the coating doped with ions of antimony.
Claim 7
Dependent Claim
16 words
A display cell as claimed in claim 5 wherein the coating is an oxide of indium.
Claim 8
Dependent Claim
25 words
A display cell as claimed in claim 6 wherein the electrodes and leads are formed by areas of the coating doped with ions of tin.
Claim 9
Dependent Claim
97 words
Method of manufacturing an electro-optic passive display cell including at least one transparent plate having an inner face and electrically conductive electrodes and leads, said method comprising the steps of, applying a coating of transparent electrically insulating material to said inner face, doping said insulating material by ion implantation in selected areas thereof to form said electrodes and leads, the index of refraction and thickness of the coating being the same as that of the electrodes and leads, the coating electrically insulating within the cell except in the locations in which said electrodes and leads are formed.
Claim 10
Dependent Claim
97 words
Method of manufacturing an electro-optic passive display cell including at least one transparent plate having an inner face and electrically conductive electrodes and leads, said method comprising the steps of, applying a coating of transparent electrically insulating material to said inner face, doping said insulating material by ion implantation in selected areas thereof to form said electrodes and leads, the index of refraction and thickness of the coating being the same as that of the electrodes and leads, the coating electrically insulating within the cell except in the locations in which said electrodes and leads are formed.
Claim 11
Dependent Claim
15 words
Method as claimed in claim 8 wherein the coating is in an oxide of tin.
Claim 12
Dependent Claim
15 words
Method as claimed in claim 9 wherein the coating is doped with ions of antimony.
Claim 13
Dependent Claim
14 words
Method as claimed in claim 8 wherein the coating is an oxide of indium.
Claim 14
Dependent Claim
15 words
Method as claimed in claim 11 wherein the coating is doped with ions of tin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |