Patent US5049866A successfully refreshed from Google Patents.
US5049866A
Expired / Lapsed
US
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Liquid crystal display device
Assignee: Citizen Watch Co Ltd
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Filing: 1989-07-19
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Granted: 1991-09-17
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Expires: 2009-07-19
Abstract
Abstract A liquid crystal display device used in a projector for projecting an image on a liquid crystal display panel onto a screen, the display device including a housing having a panel housing portion and a control circuit housing portion, the liquid crystal display panel being housed in the panel housing portion, and a control circuit housed in the control circuit housing portion, circuit chips mounted on glasses of the liquid crystal display panel for driving electrodes of the panel, the panel housing portion having a pair of attached portions formed on opposite longitudinal sides thereof, which are attached to the projector, a thickness of each side of the attached portions being less than 6 mm, and a width of the panel housing portion being about 50 mm.
Inventors
- 👤 Akira Miyajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:48
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133308; Y; Y10; Y10S; Y10S345/00; Y10S345/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A liquid crystal display device inserted between a light source and a lens of a projector for projecting an image on a liquid crystal display panel onto a screen, comprising: a housing including a front cover and a rear cover forming a panel housing portion and a control circuit housing portion of said housing which are longitudinally arranged, said liquid crystal display panel being housing in said panel housing portion; a control circuit housed in said control circuit housing portion; circuit chips mounted on glasses of said liquid crystal display panel for driving electrodes of the panel; connecting means for connecting said circuit chips with said control circuit; and a pair of attached portions formed on opposite longitudinal sides of said panel housing portion, which are arranged to be attached to the projector, a thickness of each of said attached portions being less than 6 mm, and a width of said panel housing portion being about 50 mm.
Claim 2
Dependent Claim
158 words
A liquid crystal display device inserted between a light source and a lens of a projector for projecting an image on a liquid crystal display panel onto a screen, comprising: a housing including a front cover and a rear cover forming a panel housing portion and a control circuit housing portion of said housing which are longitudinally arranged, said liquid crystal display panel being housing in said panel housing portion; a control circuit housed in said control circuit housing portion; circuit chips mounted on glasses of said liquid crystal display panel for driving electrodes of the panel; connecting means for connecting said circuit chips with said control circuit; and a pair of attached portions formed on opposite longitudinal sides of said panel housing portion, which are arranged to be attached to the projector, a thickness of each of said attached portions being less than 6 mm, and a width of said panel housing portion being about 50 mm.
Claim 3
Dependent Claim
26 words
The liquid crystal display device according to claim 1, wherein said thickness of said attached portion is smaller than a thickness of said panel housing portion.
Claim 4
Dependent Claim
28 words
The liquid crystal display device according to claim 1, wherein said thickness of said panel housing portion is smaller than a thickness of said control circuit housing portion.
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) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |