US5946067A
Expired / Lapsed
US
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Liquid crystal display
Assignee: Hydis Technologies Co Ltd
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Filing: 1998-12-11
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Granted: 1999-08-31
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Expires: 2018-12-11
Abstract
Abstract The pixel electrode and the counter electrode are devised so that an electric field generated between the counter electrode and the pixel electrode in one unit pixel region is parallel to the gate bus line and an electric field in another unit pixel regions adjacent to the one unit pixel region in left, right, upper and lower directions is vertical to the gate bus line. Therefore, the color shift of the liquid crystal display can be prevented.
Inventors
- 👤 Hyang Yul Kim
- 👤 Seung Hee Lee
- 👤 Bong Gyu Rho
- 👤 In Cheol Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:22
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134363; G02F1/1337; G02F1/13378; G02F1/133784; G02F1/134336; G02F1/136; G02F1/1362; G02F1/136286
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
132 words
A liquid crystal display(LCD) comprising: a lower substrate, a plurality of gate bus lines and a plurality of data bus lines disposed in a matrix form on the lower substrate, for defining a plurality of unit pixel regions; a plurality of first electrodes each formed on each unit pixel region; and a plurality of second electrodes corresponding to the first electrodes, each of the second electrodes formed on each unit pixel region; and wherein a direction of an electric field generated between the first electrode and the second electrode in one unit pixel region among the plurality of unit pixel regions is substantially traverse to a direction of an electric field generated between the first electrode and the second electrode in another unit pixel regions adjacent to the one unit pixel region.
Claim 2
Dependent Claim
132 words
A liquid crystal display(LCD) comprising: a lower substrate, a plurality of gate bus lines and a plurality of data bus lines disposed in a matrix form on the lower substrate, for defining a plurality of unit pixel regions; a plurality of first electrodes each formed on each unit pixel region; and a plurality of second electrodes corresponding to the first electrodes, each of the second electrodes formed on each unit pixel region; and wherein a direction of an electric field generated between the first electrode and the second electrode in one unit pixel region among the plurality of unit pixel regions is substantially traverse to a direction of an electric field generated between the first electrode and the second electrode in another unit pixel regions adjacent to the one unit pixel region.
Claim 3
Dependent Claim
32 words
The LCD as claimed in claim 1, wherein the unit pixel region comprises a first sub unit pixel region, a second sub unit pixel region and a third sub unit pixel region.
Claim 4
Dependent Claim
42 words
The LCD as claimed in claim 2, wherein the first sub unit pixel region, the second sub unit pixel region and the third sub unit pixel region are a red color region, a green color region and a blue color region, respectively.
Claim 5
Dependent Claim
69 words
The LCD as claimed in claim 3, wherein a direction of an electric field generated between the first electrode and the second electrode in one sub unit pixel region among the three sub unit pixel regions is substantially traverse to a direction of an electric field generated between the first electrode and the second electrode in another sub unit pixel region adjacent to the one sub unit pixel region.
Claim 6
Dependent Claim
23 words
The LCD as claimed in claim 4, wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 7
Dependent Claim
45 words
The LCD as claimed in claim 4, further comprising an alignment film formed on the lower substrate having the pixel electrode and the counter electrode and wherein a rubbing direction of the alignment film is about +45±5° or -45±5° based on the gate bus line.
Claim 8
Dependent Claim
49 words
The LCD as claimed in claim 4, further comprising a upper substrate spaced from and opposite to the lower substrate and a liquid crystal layer formed between the lower substrate and a upper substrate and wherein a thickness of the liquid crystal layer is about 6 μm or less.
Claim 9
Dependent Claim
25 words
The LCD as claimed in claim 7, wherein a dielectric anisotropy of a liquid crystal molecule in the liquid crystal layer is positive or negative.
Claim 10
Dependent Claim
32 words
The LCD as claimed in claim 7, wherein a product of the thickness of the liquid crystal layer and an index of refraction anisotropy is about 0.2 μm to about 0.6 μm.
Claim 11
Dependent Claim
23 words
The LCD as claimed in claim 3, wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 12
Dependent Claim
69 words
The LCD as claimed in claim 2, wherein a direction of an electric field generated between the first electrode and the second electrode in one sub unit pixel region among the three sub unit pixel regions is substantially traverse to a direction of an electric field generated between the first electrode and the second electrode in another sub unit pixel region adjacent to the one sub unit pixel region.
Claim 13
Dependent Claim
23 words
The LCD as claimed in claim 11, wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 14
Dependent Claim
47 words
The LCD as claimed in claim 11, wherein the first electrode and the second electrode in each sub unit pixel region is disposed so that the each sub unit pixel region has at least two domains in which an arrangement of a liquid crystal molecule is symmetrical.
Claim 15
Dependent Claim
23 words
The LCD as claimed in claim 2, wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 16
Dependent Claim
47 words
The LCD as claimed in claim 2, wherein the first electrode and the second electrode in each sub unit pixel region is disposed so that the each sub unit pixel region has at least two domains in which an arrangement of a liquid crystal molecule is symmetrical.
Claim 17
Dependent Claim
23 words
The LCD as claimed in claim 1, wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 18
Dependent Claim
45 words
The LCD as claimed in claim 1, further comprising an alignment film formed on the lower substrate having the pixel electrode and the counter electrode and wherein a rubbing direction of the alignment film is about +45±5° or -45±5° based on the gate bus line.
Claim 19
Dependent Claim
49 words
The LCD as claimed in claim 1, further comprising a upper substrate spaced from and opposite to the lower substrate and a liquid crystal layer formed between the lower substrate and a upper substrate and wherein a thickness of the liquid crystal layer is about 6 μm or less.
Claim 20
Dependent Claim
25 words
The LCD as claimed in claim 18, wherein a dielectric anisotropy of a liquid crystal molecule in the liquid crystal layer is positive or negative.
Claim 21
Dependent Claim
32 words
The LCD as claimed in claim 18, wherein a product of the thickness of the liquid crystal layer and an index of refraction anisotropy is about 0.2 μm to about 0.6 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) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |