US5159478A
Expired / Lapsed
US
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Transmission liquid crystal display apparatus
Assignee: Toshiba Corp
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Filing: 1989-07-26
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Granted: 1992-10-27
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Expires: 2009-07-26
Abstract
Abstract In a transmission liquid crystal display apparatus, light rays emitted from a light source and reflected from a mirror are collimated by a collimator lens and incident in a liquid cell structure through a polarization layer. The light rays emerged from the structure are transmitted through an another polarization layer and diffused by a diffusion layer. The diffusion light rays pass through a filter layer to a viewer.
Inventors
- 👤 Masahiko Akiyama
- 👤 Kouji Suzuki
- 👤 Mamoru Tominaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133504; G02F1/13356; G02F1/133565; G02F1/1336; G02F1/133602; G02F1/133606; G02F1/133607; G02F2201/00; G02F2201/52
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
97 words
A transmission color display apparatus comprising: generating means for generating substantially collimated light rays; shutting means, including a plurality of pixel segments, for shutting the light rays from said generating means, each of said plurality of pixel segments selectively permitting transmission of the light rays; diffusing means for slightly diffusing the light rays from said shutting means; and first color filter means formed on said diffusing means and including first color filter segments arranged in correspondence with each pixel segment, each of the filter segments transmitting light rays of a specific color of the diffused light rays.
Claim 2
Dependent Claim
97 words
A transmission color display apparatus comprising: generating means for generating substantially collimated light rays; shutting means, including a plurality of pixel segments, for shutting the light rays from said generating means, each of said plurality of pixel segments selectively permitting transmission of the light rays; diffusing means for slightly diffusing the light rays from said shutting means; and first color filter means formed on said diffusing means and including first color filter segments arranged in correspondence with each pixel segment, each of the filter segments transmitting light rays of a specific color of the diffused light rays.
Claim 3
Dependent Claim
46 words
An apparatus according to claim 1, wherein said generating means includes a light source for emitting light rays, reflecting means for reflecting the light rays from said light source, and collimating means for substantially collimating the light rays from said light source and said reflecting means.
Claim 4
Dependent Claim
58 words
An apparatus according to claim 1, wherein said generating means includes a plurality of light sources for emitting light rays, a plurality of reflecting mirrors, arranged in correspondence with said light sources, for reflecting the light rays from said light sources, and collimating means for substantially collimating the light rays from said light sources and said reflecting mirrors.
Claim 5
Dependent Claim
29 words
An apparatus according to claim 1, further comprising second diffusing means, arranged between said generating means and said shutting means, for diffusing the light rays from said generating means.
Claim 6
Dependent Claim
28 words
An apparatus according to claim 1, wherein said filter means includes a black matrix, arranged between said color filter segments, for preventing the light rays from passing therethrough.
Claim 7
Dependent Claim
14 words
An apparatus according to claim 1, wherein said shutting means comprises liquid crystal cells.
Claim 8
Dependent Claim
46 words
A transmission color display apparatus according to claim 1, further comprising: second color filter means including second color filter segments, arranged in correspondence with each pixel segment and located between said shutting means and said diffusing means, for selectively transmitting light rays from said shutting means.
Claim 9
Dependent Claim
29 words
A transmission color display apparatus according to claim 7, wherein each of the second color filter segments has a size different than that of the first color filter segments.
Claim 10
Dependent Claim
65 words
An apparatus according to claim 7, wherein said shutting means comprises a liquid crystal cell structure including liquid crystal cells and a transparent plate having one surface and an opposite surface facing the liquid crystal cells, said first filter means being formed on the one surface of the transparent plate and the second filter means being formed on the opposite surface of the transparent plate.
Claim 11
Dependent Claim
141 words
A transmission color display apparatus having a first plane, comprising: at least one linear light source, having a light source axis, for generating light rays; collimating means, having a major axis substantially parallel with the light source axis, for reflecting the light rays from said light source and collimating the light rays along a first plane; shutting means, including a plurality of pixel segments, for shutting the light rays from said generating means, each of said plurality of pixel segments selectively permitting transmission of the light rays; diffusing means for slightly diffusing the light rays from said shutting means; and first color filter means formed on said diffusing means and including first color filter segments arranged in correspondence with each pixel segment, each of the first color filter segments transmitting light rays of a specific color of the diffused light rays.
Claim 12
Dependent Claim
141 words
A transmission color display apparatus having a first plane, comprising: at least one linear light source, having a light source axis, for generating light rays; collimating means, having a major axis substantially parallel with the light source axis, for reflecting the light rays from said light source and collimating the light rays along a first plane; shutting means, including a plurality of pixel segments, for shutting the light rays from said generating means, each of said plurality of pixel segments selectively permitting transmission of the light rays; diffusing means for slightly diffusing the light rays from said shutting means; and first color filter means formed on said diffusing means and including first color filter segments arranged in correspondence with each pixel segment, each of the first color filter segments transmitting light rays of a specific color of the diffused light rays.
Claim 13
Dependent Claim
38 words
An apparatus according to claim 10, wherein said collimating means includes a reflector for reflecting the light rays from said light source, and a collimator for substantially collimating the light rays from said light source and said reflector.
Claim 14
Dependent Claim
60 words
An apparatus according to claim 10, comprising: a plurality of said light sources for emitting light rays; and said collimating means comprising a plurality of reflecting mirrors, arranged in correspondence with said light sources, for reflecting the light rays from said light sources, and a collimator for substantially collimating the light rays from said light sources and said reflecting mirrors.
Claim 15
Dependent Claim
29 words
An apparatus according to claim 10, further comprising second diffusing means, arranged between said light source and said shutting means, for diffusing the light rays from said light source.
Claim 16
Dependent Claim
28 words
An apparatus according to claim 10, wherein said filter means includes a black matrix, arranged between said color filter segments, for preventing the light rays from passing therethrough.
Claim 17
Dependent Claim
14 words
An apparatus according to claim 10, wherein said shutting means comprises liquid crystal cells.
Claim 18
Dependent Claim
46 words
A transmission color display apparatus according to claim 10, further comprising: second color filter means including second color filter segments, arranged in correspondence with each pixel segment and located between said shutting means and said diffusing means, for selectively transmitting light rays from said shutting means.
Claim 19
Dependent Claim
29 words
A transmission color display apparatus according to claim 16, wherein each of the second color filter segments has a size different than that of the first color filter segments.
Claim 20
Dependent Claim
66 words
An apparatus according to claim 16, wherein said shutting means comprises a liquid crystal cell structure including liquid crystal cells and a transparent plate having one surface and an opposite surface facing liquid crystal cells, and first color filter means being formed on the one surface of the transparent plate and the second color filter means being formed on the opposite surface of the transparent plate.
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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) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |