US4694347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television receiver having a liquid crystal display device
Assignee: Citizen Watch Co Ltd
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Filing: 1986-05-30
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Granted: 1987-09-15
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Expires: 2006-05-30
Abstract
Abstract A television receiver has a receiving circuit for producing audio signals and video signals, a liquid crystal display panel, and a driving circuit responsive to the video signals for driving the liquid crystal display panel. The receiving circuit and driving circuit include elements provided on an SOS substrate.
Inventors
- 👤 Katsu Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:14
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/64; H04N5/655; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
A television receiver comprising: a transparent SOS substrate; a liquid crystal display panel provided on a sapphire portion of the SOS substrate; receiving means, including an intermediate-frequency amplifier, video signal circuit and audio signal circuit, for producing audio signals and video signals; driving means responsive to the video signals for driving the liquid crystal display panel to display images represented by said video signals; said intermediate-frequency amplifier, video signal circuit and audio signal circuit of the receiving means and active elements of the driving means being monolithically mounted on the SOS substrate at a portion lateral of the liquid crystal display panel; said receiving means including a gallium arsenide transistor mounted on said SOS substrate as an element of a high frequency amplifier; said receiving means further including a surface acoustic wave device as an intermediate-frequency filter, the surface acoustic wave device being mounted on said SOS substrate.
Claim 2
Dependent Claim
148 words
A television receiver comprising: a transparent SOS substrate; a liquid crystal display panel provided on a sapphire portion of the SOS substrate; receiving means, including an intermediate-frequency amplifier, video signal circuit and audio signal circuit, for producing audio signals and video signals; driving means responsive to the video signals for driving the liquid crystal display panel to display images represented by said video signals; said intermediate-frequency amplifier, video signal circuit and audio signal circuit of the receiving means and active elements of the driving means being monolithically mounted on the SOS substrate at a portion lateral of the liquid crystal display panel; said receiving means including a gallium arsenide transistor mounted on said SOS substrate as an element of a high frequency amplifier; said receiving means further including a surface acoustic wave device as an intermediate-frequency filter, the surface acoustic wave device being mounted on said SOS substrate.
Claim 3
Dependent Claim
35 words
The television receiver according to claim 1 wherein said surface acoustic wave device comprises a piezoelectric thin film deposited on a sapphire substrate in said SOS substrate and electrodes provided on the piezeoelectric thin film.
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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |