US5144473A
Expired / Lapsed
US
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Organic thin film display element
Assignee: Toshiba Corp
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Filing: 1990-03-29
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Granted: 1992-09-01
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Expires: 2010-03-29
Abstract
Abstract An organic thin film display element comprises a pair of electrodes, an organic thin film interposed between the electrodes and including both donor molecules and acceptor molecules, and an insulating layer having a relative dielectric constant of 10 or more, and interposed between at least one of the electrodes and the organic thin film.
Inventors
- 👤 Nobuhiro Gemma
- 👤 Toshio Nakayama
- 👤 Syun Egusa
- 👤 Akira Miura
- 👤 Makoto Azuma
- 👤 Shinya Aoki
- 👤 Katsuyuki Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/1533
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
An organic thin film display element, comprising: a pair of electrodes; an organic thin film interposed between said electrodes and including both donor molecules and acceptor molecules; and an insulating layer having a relative dielectric constant of 10 or more, and interposed between at least one of said electrodes and said organic thin film.
Claim 2
Dependent Claim
54 words
An organic thin film display element, comprising: a pair of electrodes; an organic thin film interposed between said electrodes and including both donor molecules and acceptor molecules; and an insulating layer having a relative dielectric constant of 10 or more, and interposed between at least one of said electrodes and said organic thin film.
Claim 3
Dependent Claim
15 words
The element according to claim 1, wherein said organic thin film has a super-lattice structure.
Claim 4
Dependent Claim
43 words
The element according to claim 1, wherein the product of the relative dielectric constant and the dielectric breakdown strength of said insulating layer is greater than the product of the relative dielectric constant and the dielectric breakdown strength of said organic thin film.
Claim 5
Dependent Claim
19 words
The element according to claim 3, wherein said insulating layer is formed of a ferroelectric or paraelectric inorganic compound.
Claim 6
Dependent Claim
70 words
The element according to claim 4, wherein said inorganic compound is one selected among the group consisting of SrTiO 3 , Y 2 O 3 , Ta 2 O 5 , Sm 2 O 3 , BaTiO 3 , BaTa 2 O 6 , PbTiO 3 , Al 2 O 3 , PbNb 2 O 6 , ZrO 2 , TiO 2 , Bi 2 O 3 , and ZnS.
Claim 7
Dependent Claim
26 words
The element according to claim 1, further comprising an insulating layer formed of a ferroelectric or paraelectric organic high molecular compound on said organic thin film.
Claim 8
Dependent Claim
77 words
The element according to claim 6, wherein said organic high molecular compound is a polyethylene derivative including at least one of a halogen, a cyano group, a hydroxyl group, an amino group, a carboxyl group, a nitro group, an ester group, and an ether group on a side chain; or a condensation type high molecular compound consisting of at least one of a polyamide, a polyimide, a polyurethane, a polyester, a polycarbonate, a polyether, and a polythioether.
Claim 9
Dependent Claim
71 words
The element according to claim 1, wherein an insulating layer formed of a ferroelectric or paraelectric inorganic compound having a relative dielectric constant of 10 or more is arranged between the electrode under the organic thin film and the organic thin film, and an insulating layer formed of a ferroelectric or paraelectric organic high molecular compound is arranged between the organic thin film and the electrode above the organic thin film.
Claim 10
Dependent Claim
25 words
The element according to claim 1, wherein said pair of electrodes are arranged such that the pair of electrodes constitute lines perpendicular to each other.
Claim 11
Dependent Claim
22 words
The element according to claim 1, wherein one of said pair of electrodes consists of a non-linear element and a pixel electrode.
Claim 12
Dependent Claim
55 words
An organic thin film display element, comprising: a pair of electrodes; an organic thin film interposed between said electrodes and formed of a mixed stacked organic charge-transfer compound; and an insulating layer having a relative dielectric constant of 10 or more, and interposed between at least one of said electrode sand said organic thin film.
Claim 13
Dependent Claim
55 words
An organic thin film display element, comprising: a pair of electrodes; an organic thin film interposed between said electrodes and formed of a mixed stacked organic charge-transfer compound; and an insulating layer having a relative dielectric constant of 10 or more, and interposed between at least one of said electrode sand said organic thin film.
Claim 14
Dependent Claim
29 words
The element according to claim 11, wherein the peak wavelength λ CT of a charge-transfer absorption band of the mixed stacked organic charge-transfer compound is 0.8 μm or more.
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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) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |