US4036551A
Expired / Lapsed
US
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Display apparatus
Assignee: Sony Corp
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Filing: 1976-03-22
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Granted: 1977-07-19
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Expires: 1996-03-22
Abstract
Abstract An electronic display apparatus includes a first transparent electrode, a second electrode arranged opposite to the first transparent electrode and an electric-responsive layer containing cyanine dye, interposed between the first transparent electrode and the second electrode. The color tone of the electric-responsive layer changes in response to electric field applied across the first transparent electrode and the second electrode.
Inventors
- 👤 Hiroshi Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:37
CPC Classifications
C; C09; C09K; C09K9/00; C09K9/02; G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1503
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
A display apparatus comprising: (a), a first transparent electrode; (b), a second electrode arranged opposite to said first transparent electrode; and (c), an electric-responsive layer containing cyanine dye, interposed between said first transparent electrode and said second electrode, said cyanine dye being represented by the following general formula: ##STR13## where R 1 and R 2 represent aromatic group or --CH=CH--, R 3 and R 4 represent alkyl group, Y and Y' represent --CH=CH--, --O--, --S--, --Se-- or =C=(CH 3 ) 2 , X represents I, Br or Cl, and n=0, 1, 2 or 3.
Claim 2
Dependent Claim
94 words
A display apparatus comprising: (a), a first transparent electrode; (b), a second electrode arranged opposite to said first transparent electrode; and (c), an electric-responsive layer containing cyanine dye, interposed between said first transparent electrode and said second electrode, said cyanine dye being represented by the following general formula: ##STR13## where R 1 and R 2 represent aromatic group or --CH=CH--, R 3 and R 4 represent alkyl group, Y and Y' represent --CH=CH--, --O--, --S--, --Se-- or =C=(CH 3 ) 2 , X represents I, Br or Cl, and n=0, 1, 2 or 3.
Claim 3
Dependent Claim
30 words
A display apparatus according to claim 1, in which said cyanine dye is one selected from the group consisting of quinoline blue, pseudocyanine, pinacyanol, kryptocyanine, dicyanine, 4,4'-dicarbocyanine, xenocyanine and indo-tricarbocyanine.
Claim 4
Dependent Claim
35 words
A display apparatus according to claim 1, in which said cyanine dye is a mixture of two or more selected from the group consisting of quinoline blue, pseudocyanine, pinacyanol, kryptocyanine, dicyanine, 4,4'-dicarbocyanine, xenocyanine and indo-tricarbocyanine.
Claim 5
Dependent Claim
15 words
A display apparatus according to claim 1, in which said cyanine dye is quinoline blue.
Claim 6
Dependent Claim
48 words
A display apparatus according to claim 1, in which said cyanine dye is dissolvd into a solvent selected from the group consisting of alcohol, acetone and water or into a mixture of said solvent and another solvent selected from the group consisting of benzene toluene, dioxane and chloroform.
Claim 7
Dependent Claim
17 words
A display apparatus according to claim 5, in which electrolyte is further added into said cyanine dye.
Claim 8
Dependent Claim
23 words
A disply apparatus according to claim 1, in which said electric-responsive layer comprises a mixture of said cyanaine dye and an electron acceptor.
Claim 9
Dependent Claim
25 words
A display apparatus according to claim 7, in which said electron acceptor is one selected from the group consisting of tetracyanoethylene, picric acid and tetracyanoquinodimethane.
Claim 10
Dependent Claim
26 words
A display apparatus according to claim 1, in which a DC voltage of several volts to 20 volts is applied across said first and second electrodes.
Claim 11
Dependent Claim
22 words
A display apparatus according to claim 1, in which the distance between said first and second electrodes is 50 to 100 μm.
Claim 12
Dependent Claim
21 words
A display apparatus according to claim 9, in which said DC voltage is reversibly applied across said first and second electrodes.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |