Patent US5346776A successfully refreshed from Google Patents.
US5346776A
Expired / Lapsed
US
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Electroluminescent panel
Assignee: Sharp Corp
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Filing: 1992-03-19
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Granted: 1994-09-13
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Expires: 2012-03-19
Abstract
Abstract A multi-color electroluminescent panel comprising common electrodes and a plurality of transparent electrodes, an EL light emitting layer disposed between the common and transparent electrodes and capable of exhibiting a hysteresis in light emission luminance versus applied voltage characteristic, and band-pass color filters provided on the EL light emitting layer for passing therethrough light of a particular color emitted from the EL light emitting layer.
Inventors
- 👤 Kouji Taniguchi
- 👤 Koichi Tanaka
- 👤 Kousuke Terada
- 👤 Akiyoshi Mikami
- 👤 Masaru Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/22; H05B33/10; H05B33/14; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
An electroluminescent panel, comprising: first and second electrodes; first and second insulating layers disposed between said first and second electrodes; light emitting layer means, disposed between said first and second insulating layers for generating light as a function of a voltage applied by said first and second electrodes, said light emitting layer means having a plurality of cavities formed therein which limit propagation of the generated light within said light emitting means; and a photo-conductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic.
Claim 2
Dependent Claim
98 words
An electroluminescent panel, comprising: first and second electrodes; first and second insulating layers disposed between said first and second electrodes; light emitting layer means, disposed between said first and second insulating layers for generating light as a function of a voltage applied by said first and second electrodes, said light emitting layer means having a plurality of cavities formed therein which limit propagation of the generated light within said light emitting means; and a photo-conductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic.
Claim 3
Dependent Claim
122 words
An electroluminescent panel, comprising: first and second electrodes; first and second insulating layers disposed between said first and second electrodes; light emitting layer means, disposed between said first and second insulating layers for generating light as a function of a voltage applied by said first and second electrodes, said light emitting layer means having a plurality of cavities formed therein which limit propagation of the generated light within said light emitting means; and a photo-conductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic wherein the photo-conductive layer is Si x C 1-x where 0<x<1 and wherein at least one of said cavities contains a light shielding material.
Claim 4
Dependent Claim
122 words
An electroluminescent panel, comprising: first and second electrodes; first and second insulating layers disposed between said first and second electrodes; light emitting layer means, disposed between said first and second insulating layers for generating light as a function of a voltage applied by said first and second electrodes, said light emitting layer means having a plurality of cavities formed therein which limit propagation of the generated light within said light emitting means; and a photo-conductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic wherein the photo-conductive layer is Si x C 1-x where 0<x<1 and wherein at least one of said cavities contains a light shielding material.
Claim 5
Dependent Claim
111 words
An electroluminescent panel, comprising: a plurality of picture elements including a first and second picture element, each picture element comprising: first and second electrodes; a light emitting portion disposed between said first and second electrodes, wherein said light emitting portion generates light as a function of a voltage developed between said first and second electrodes; and a photoconductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic; wherein the panel further comprises a light shielding material disposed between the light emitting portion of the first picture element and the light emitting portion of the second picture element.
Claim 6
Dependent Claim
111 words
An electroluminescent panel, comprising: a plurality of picture elements including a first and second picture element, each picture element comprising: first and second electrodes; a light emitting portion disposed between said first and second electrodes, wherein said light emitting portion generates light as a function of a voltage developed between said first and second electrodes; and a photoconductive layer disposed between said first electrode and said first insulating layer to give a hysteresis in light emission luminance versus applied voltage characteristic; wherein the panel further comprises a light shielding material disposed between the light emitting portion of the first picture element and the light emitting portion of the second picture element.
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) | 1997-09-12 | 1998-03-14 | 1998-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-12 | 2002-03-14 | 2002-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-12 | 2006-03-14 | 2006-09-13 | $7700.00 | Window Closed / Lapsed |