US6144430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 09:40
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.
References Cited (Backward Citations)
US3960438A
Cited
US4239349A
Cited
US4185895A
Cited
US4456336A
Cited
US4660936A
Cited
US4660936B1
Cited
US5128787A
Cited
US5182663A
Cited
US5418631A
Cited
US5629784A
Cited
US5818554A
Cited
US5828471A
Cited
US5841496A
Cited
US5659408A
Cited
US5796455A
Cited
US5889570A
Cited
US5812229A
Cited
US5714247A
Cited
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 |