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US5349453A
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US
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Liquid crystal display device with microlenses on same plane as switching elements
Assignee: Sony Corp
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Filing: 1992-08-14
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Granted: 1994-09-20
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Expires: 2012-08-14
Abstract
Abstract A liquid crystal display device comprises a first substrate which has a plurality of picture element electrodes arranged in a matrix and a plurality of switching elements associated with the respective picture element electrodes to drive the electrodes, a second substrate which is opposed to the first substrate, and a liquid crystal layer provided between the first and second substrates. A micro-lens is formed between the first substrate and each picture element electrode, by which a high contrast ratio is obtained in a totally white display mode.
Inventors
- 👤 Masaki Munakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133526; G02F1/136; G02F1/13356; G02F1/133565
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A liquid crystal display device which comprises: a first substrate; a plurality of picture element electrodes arranged in a matrix formed on an inner surface of the first substrate; a plurality of switching elements wherein each one of said plurality of picture element electrodes is associated with a corresponding one of said plurality of switching elements; a plurality of lens elements formed on the inner surface of the first substrate, each lens element being separately disposed under a corresponding picture element electrode; a second substrate opposed to the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein said plurality of lens elements are formed on a same plane with said plurality of switching elements.
Claim 2
Dependent Claim
122 words
A liquid crystal display device which comprises: a first substrate; a plurality of picture element electrodes arranged in a matrix formed on an inner surface of the first substrate; a plurality of switching elements wherein each one of said plurality of picture element electrodes is associated with a corresponding one of said plurality of switching elements; a plurality of lens elements formed on the inner surface of the first substrate, each lens element being separately disposed under a corresponding picture element electrode; a second substrate opposed to the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein said plurality of lens elements are formed on a same plane with said plurality of switching elements.
Claim 3
Dependent Claim
29 words
A liquid crystal display device as claimed in claim 1, further comprising: an insulating layer formed between said plurality of picture element electrodes and said plurality of lens elements.
Claim 4
Dependent Claim
19 words
A liquid crystal display device as claimed in claim 2, wherein said insulating layer comprises of a PSG film.
Claim 5
Dependent Claim
30 words
A liquid crystal device as claimed in claim 1, wherein said plurality of lens elements are of a structure characterized by having been formed by chemical vapor deposition and etching.
Claim 6
Dependent Claim
36 words
A liquid crystal display device as claimed in claim 1, wherein said plurality of lens elements are comprised of a same material as a material of an insulating layer formed over said plurality of switching elements.
Claim 7
Dependent Claim
114 words
A liquid crystal display device which comprises: a first substrate comprising an insulating substrate, a plurality of display elements formed in rows and columns on the first substrate, each of said plurality of display elements comprising a picture element electrode, a switching element electrically connected to the picture element electrode, and a lens element deposited between the first substrate and the picture element electrode; a second substrate opposed to the first substrate and having an electrode formed on an inner surface thereof; and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein said plurality of lens elements are formed on a same plane with said plurality of switching elements.
Claim 8
Dependent Claim
114 words
A liquid crystal display device which comprises: a first substrate comprising an insulating substrate, a plurality of display elements formed in rows and columns on the first substrate, each of said plurality of display elements comprising a picture element electrode, a switching element electrically connected to the picture element electrode, and a lens element deposited between the first substrate and the picture element electrode; a second substrate opposed to the first substrate and having an electrode formed on an inner surface thereof; and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein said plurality of lens elements are formed on a same plane with said plurality of switching elements.
Claim 9
Dependent Claim
21 words
A liquid crystal display device as claimed in claim 6, wherein said plurality of lens elements comprise a first PSG layer.
Claim 10
Dependent Claim
27 words
A liquid crystal display device as claimed in claim 7, further comprising: a second PSG layer formed between said first PSG layer and said picture element electrode.
Claim 11
Dependent Claim
29 words
A liquid crystal display device as claimed in claim 6, wherein said lens element is of a structure characterized by having been formed by chemical vapor deposition and etching.
Claim 12
Dependent Claim
32 words
A liquid crystal display device as claimed in claim 6, wherein said lens element is comprised of a same material as a material of an insulating layer formed over said switching element.
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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) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |