Patent DE726290C successfully refreshed from Google Patents.
US5754261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color LCD device having multiple black masks
Assignee: LG Display Co Ltd
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Filing: 1996-04-11
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Granted: 1998-05-19
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Expires: 2016-04-11
Abstract
Abstract The present invention relates to a liquid crystal display device, in which a TFT array, color filters and a black matrix are provided on a single glass substrate. As a result, the second substrate of the LCD can be made thinner, thereby reducing the overall weight of the device. In addition, the LCD in accordance with the claimed invention has an improved aperture ratio. Further, less stress can be placed on the glass substrate, thereby improving yield.
Inventors
- 👤 Ki Hyun Lyu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:46
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133512
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
126 words
A liquid crystal display device comprising: a substrate having a first surface and a second surface opposite said first surface; plurality of thin film transistors provided on respective first portions of said first surface of said substrate; a plurality of color filters provided on respective second portions of said second surface of said substrate; a substantially opaque layer, provided adjacent said second surface of said substrate, having portions respectively aligned with said plurality of first portions of said first surface of said substrate; and an additional plurality of substantially opaque layers provided overlying said plurality of thin film transistors provided on said first surface of said substrate, said additional plurality of substantially opaque layers respectively aligned with channel regions of said plurality of thin film transistors.
Claim 2
Dependent Claim
126 words
A liquid crystal display device comprising: a substrate having a first surface and a second surface opposite said first surface; plurality of thin film transistors provided on respective first portions of said first surface of said substrate; a plurality of color filters provided on respective second portions of said second surface of said substrate; a substantially opaque layer, provided adjacent said second surface of said substrate, having portions respectively aligned with said plurality of first portions of said first surface of said substrate; and an additional plurality of substantially opaque layers provided overlying said plurality of thin film transistors provided on said first surface of said substrate, said additional plurality of substantially opaque layers respectively aligned with channel regions of said plurality of thin film transistors.
Claim 3
Dependent Claim
23 words
A liquid crystal display device in accordance with claim 1, wherein said plurality of thin film transistors comprise top gate thin film transistors.
Claim 4
Dependent Claim
44 words
A liquid crystal display device in accordance with claim 2, further comprising: another substrate spaced from said substrate, said another substrate having a common electrode disposed thereon; and a light source, wherein said another substrate is provided between said light source and said substrate.
Claim 5
Dependent Claim
24 words
A liquid crystal display device in accordance with claim 3, wherein a liquid crystal material is provided between said substrate and said another substrate.
Claim 6
Dependent Claim
23 words
A liquid crystal display device in accordance with claim 3, wherein said another substrate has a thickness less than that of said substrate.
Claim 7
Dependent Claim
44 words
A liquid crystal display device in accordance with claim 2, further comprising: another substrate spaced from said substrate, said another substrate having a common electrode disposed thereon; and a light source, wherein said substrate is provided between said light source and said another substrate.
Claim 8
Dependent Claim
24 words
A liquid crystal display device in accordance with claim 6, wherein a liquid crystal material is provided between said substrate and said another substrate.
Claim 9
Dependent Claim
23 words
A liquid crystal display device in accordance with claim 6, wherein said another substrate has a thickness less than that of said substrate.
Claim 10
Dependent Claim
21 words
A liquid crystal display device in accordance with claim 1, wherein said thin film transistors comprise bottom gate thin film transistors.
Claim 11
Dependent Claim
44 words
A liquid crystal display device in accordance with claim 9, further comprising: another substrate spaced from said substrate, said another substrate having a common electrode disposed thereon; and a light source, wherein said another substrate is provided between said light source and said substrate.
Claim 12
Dependent Claim
24 words
A liquid crystal display device in accordance with claim 10, wherein a liquid crystal material is provided between said substrate and said another substrate.
Claim 13
Dependent Claim
23 words
A liquid crystal display device in accordance with claim 10, wherein said another substrate has a thickness less than that of said substrate.
Claim 14
Dependent Claim
32 words
A liquid crystal display device in accordance with claim 10, wherein widths of said additional plurality of substantially opaque layers are less than widths of said portions of said substantially opaque layer.
Claim 15
Dependent Claim
35 words
A liquid crystal display device in accordance with claim 9, further comprising: another substrate spaced from said substrate; and a light source, wherein said substrate is provided between said light source and said another substrate.
Claim 16
Dependent Claim
24 words
A liquid crystal display device in accordance with claim 14, wherein a liquid crystal material is provided between said substrate and said another substrate.
Claim 17
Dependent Claim
23 words
A liquid crystal display device in accordance with claim 14, wherein said another substrate has a thickness less than that of said substrate.
Claim 18
Dependent Claim
36 words
A liquid crystal display device in accordance with claim 14, wherein a width of each of said additional plurality of substantially opaque layers is less than a width of said portions of said substantially opaque layer.
References Cited (Backward Citations)
US4948231A
Cited
US4687298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |