US5115329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device having a liquid crystal layer adjacent to the electroluminescent layer without any electrode placed therebetween
Assignee: Alps Alpine Co Ltd
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Filing: 1990-05-29
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Granted: 1992-05-19
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Expires: 2010-05-29
Abstract
Abstract A electroluminescence device has a light emitting layer composed of a fluorescent powder and a liquid crystal between a transparent substrate formed with a transparent electrode and an insulating substrate formed with an opposed electrode.
Inventors
- 👤 Masami Ikarashi
- 👤 Kenichi Mitsumori
- 👤 Mitsuru Kano
- 👤 Yasuhiro Miki
- 👤 Takemi Akimoto
- 👤 Masahiko Yamaguchi
- 👤 Yorihiko Sasaki
- 👤 Tomoo Kamigaki
- 👤 Jun Nakanowatari
- 👤 Yoshinori Kato
- 👤 Hitoshi Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:40
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133617
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
An electroluminescent device comprising: a transparent substrate having transparent electrodes thereon; an insulating substrate having an opposing electrode formed thereon; and a liquid crystal layer and an electroluminescent layer which are disposed between said transparent and insulating substrates, such that said liquid crystal layer is positioned adjacent to said transparent substrate and said liquid crystal layer and said electroluminescent layer are adjacent to each other without any electrode placed therebetween.
Claim 2
Dependent Claim
70 words
An electroluminescent device comprising: a transparent substrate having transparent electrodes thereon; an insulating substrate having an opposing electrode formed thereon; and a liquid crystal layer and an electroluminescent layer which are disposed between said transparent and insulating substrates, such that said liquid crystal layer is positioned adjacent to said transparent substrate and said liquid crystal layer and said electroluminescent layer are adjacent to each other without any electrode placed therebetween.
References Cited (Backward Citations)
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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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |