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US6144430A
Expired / Lapsed
US
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Reflective-type liquid crystal display with single polarizer and an inner metallic reflector
Assignee: Transpacific IP Ltd
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Filing: 1997-11-19
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Granted: 2000-11-07
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Expires: 2017-11-19
Abstract
Abstract One polarizer reflective-type color liquid crystal display has been developed. Reflective-type liquid crystal display have found increasingly important for both direct-view and projection displays. Attractive features such as high contrast ratio, mirror reflection reduced, and clear image of no parallax are demonstrated. This design uses single polarizer to enhanced the brightness and an inner metallic reflector to avoid parallax.
Inventors
- 👤 Chen-Lung Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/133504
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A reflective type liquid crystal display structure comprising: a liquid crystal display cell with a first substrate, a second substrate, said first and second substrates being located facing each other with a liquid crystal layer therebetween; a tilted reflector being formed on the liquid crystal layer side of said first substrate, said tilted reflector comprising a transparent flatted layer and a plurality of micro-mirrors with a tilted angle of about 2-4 degrees formed in said transparent flatted layer; a diffuser located atop said second substrate; a retardation film located atop said diffuser; and a polarizer located atop said retardation film, as an entrance polarizer.
Claim 2
Dependent Claim
104 words
A reflective type liquid crystal display structure comprising: a liquid crystal display cell with a first substrate, a second substrate, said first and second substrates being located facing each other with a liquid crystal layer therebetween; a tilted reflector being formed on the liquid crystal layer side of said first substrate, said tilted reflector comprising a transparent flatted layer and a plurality of micro-mirrors with a tilted angle of about 2-4 degrees formed in said transparent flatted layer; a diffuser located atop said second substrate; a retardation film located atop said diffuser; and a polarizer located atop said retardation film, as an entrance polarizer.
Claim 3
Dependent Claim
61 words
The reflective type liquid crystal display as claimed in claim 1, wherein said liquid crystal display cell further comprising: a common electrode being formed on the liquid crystal side of said tilted reflector; a plurality of display electrodes disposed in a matrix; and switching elements connected to said display electrodes being formed on the liquid crystal side of said second substrate.
Claim 4
Dependent Claim
17 words
The reflective type liquid crystal display as claimed in claim 2, wherein said display electrodes are ITOs.
Claim 5
Dependent Claim
19 words
The reflective type liquid crystal display as claimed in claim 2, wherein said switching elements are thin film transistors.
Claim 6
Dependent Claim
17 words
The reflective type liquid crystal display as claimed in claim 2, wherein said common electrode is ITO.
Claim 7
Dependent Claim
20 words
The reflective type liquid crystal display as claimed in claim 1, wherein said retardation film is a quarter-wave retardation film.
Claim 8
Dependent Claim
48 words
The reflective type liquid crystal display as claimed in claim 1, wherein said diffuser comprising: a transparent film; and a plurality of transparent micro particles distributed in said transparent film, the refractive index of said transparent film is different from the refractive index of said transparent micro particles.
Claim 9
Dependent Claim
29 words
The reflective type liquid crystal display as claimed in claim 7, wherein said transparent film with thickness about 20˜1000 μm, said transparent micro particles with diameter about 0.5˜20 μm.
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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) | 2003-11-07 | 2004-05-08 | 2004-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-07 | 2008-05-08 | 2008-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-07 | 2012-05-08 | 2012-11-07 | $7700.00 | Window Closed / Lapsed |