US6177973B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical alignment mode liquid crystal display having enhanced response time
Assignee: Hydis Technologies Co Ltd
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Filing: 1998-11-24
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Granted: 2001-01-23
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Expires: 2018-11-24
Abstract
Abstract A liquid crystal display(LCD) comprise a first substrate, a first electrode formed on a front surface of the first substrate, a second electrode spaced from the first electrode on the front surface of the first substrate, a first vertical alignment film formed on a surface of a resultant in which the first electrode and the second electrode are formed and rubbed in a length direction of the second electrode, a first polarization film disposed on a back surface of the first substrate opposite to the front surface of the first substrate, a second substrate having a surface opposite to the first substrate, a second vertical alignment film formed on the opposite surface of the second substrate and rubbed in a length direction of the second electrode, a liquid crystal layer interposed between the first vertical alignment film and the second vertical alignment film so that all the liquid crystal molecules in the liquid crystal layer have a single uniform tilt angle with respect to the first substrate when no voltage is applied, and a second polarization film formed on a back surface of the second substrate opposite to the opposite surface of the second substrate.
Inventors
- 👤 Seung Hee Lee
- 👤 In Cheol Park
- 👤 Hyang Yul Kim
- 👤 Yun Hee Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:32
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; G02F1/133742; G02F1/133784
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
263 words
A liquid crystal display (LCD) comprising: a first substrate; a first electrode formed on a front surface of the first electrode; a second electrode spaced from the first electrode on the surface of the first electrode; a first vertical alignment film formed on a surface of a resultant in which the first electrode and the second electrode are formed, wherein a rubbing direction of the first vertical alignment film forms about 0 to 30 degree from the length direction of the second electrode toward a right or left direction; a first polarization film disposed on a back surface of the first substrate opposite to the front surface of the first substrate; a second substrate having a surface opposite to the first substrate; a second vertical alignment film formed on the opposite surface of the second substrate, wherein a rubbing direction of the second vertical alignment film forms about 0 to 30 degree from the length direction of the second electrode toward a right or left direction; a liquid crystal layer interposed between the first vertical alignment film and the second vertical alignment film, the liquid crystal layer comprising a plurality of liquid crystal molecules, the liquid crystal molecules having a single uniform tilt angle with respect to the first substrate when no voltage is applied; and a second polarization film formed on a back surface of the second substrate opposite to the opposite surface of the second substrate, whereby collisions between the liquid crystal molecules during application of a voltage to the LCD are prevented, thus decreasing the response time of the LCD.
Claim 2
Dependent Claim
263 words
A liquid crystal display (LCD) comprising: a first substrate; a first electrode formed on a front surface of the first electrode; a second electrode spaced from the first electrode on the surface of the first electrode; a first vertical alignment film formed on a surface of a resultant in which the first electrode and the second electrode are formed, wherein a rubbing direction of the first vertical alignment film forms about 0 to 30 degree from the length direction of the second electrode toward a right or left direction; a first polarization film disposed on a back surface of the first substrate opposite to the front surface of the first substrate; a second substrate having a surface opposite to the first substrate; a second vertical alignment film formed on the opposite surface of the second substrate, wherein a rubbing direction of the second vertical alignment film forms about 0 to 30 degree from the length direction of the second electrode toward a right or left direction; a liquid crystal layer interposed between the first vertical alignment film and the second vertical alignment film, the liquid crystal layer comprising a plurality of liquid crystal molecules, the liquid crystal molecules having a single uniform tilt angle with respect to the first substrate when no voltage is applied; and a second polarization film formed on a back surface of the second substrate opposite to the opposite surface of the second substrate, whereby collisions between the liquid crystal molecules during application of a voltage to the LCD are prevented, thus decreasing the response time of the LCD.
Claim 3
Dependent Claim
20 words
The LCD according to claim 1 , wherein the single uniform tilt angle is about 85 to about 90 degrees.
Claim 4
Dependent Claim
17 words
The LCD according to claim 2 , wherein the liquid crystal molecules have a positive dielectric anisotropy.
Claim 5
Dependent Claim
40 words
The LCD according to claim 3 , further comprising a phase compensation film formed between the second electrode and the second polarization film in order to make an isotropy of an index of refraction anisotropy of the liquid crystal molecules.
Claim 6
Dependent Claim
17 words
The LCD according to claim 1 , wherein the liquid crystal molecule has a positive dielectric anisotropy.
Claim 7
Dependent Claim
40 words
The LCD according to claim 5 , further comprising a phase compensation film formed between the second electrode and the second polarization film in order to make an isotropy of an index of refraction anisotropy of the liquid crystal molecules.
Claim 8
Dependent Claim
16 words
The LCD according to 1 , wherein the liquid crystal molecules have a positive dielectric anisotropy.
Claim 9
Dependent Claim
16 words
The LCD according to 1 , wherein the liquid crystal molecules have a positive dielectric anisotropy.
Claim 10
Dependent Claim
40 words
The LCD according to claim 7 , further comprising a phase compensation film formed between the second electrode and the second polarization film in order to make an isotropy of an index of refraction anisotropy of the liquid crystal molecules.
Claim 11
Dependent Claim
17 words
The LCD according to claim 1 , wherein the liquid crystal molecules have a negative dielectric anisotropy.
Claim 12
Dependent Claim
24 words
The LCD according to claim 1 , wherein the rubbing of the first electrode and the second electrode is performed by using a rubbing-cloth.
Claim 13
Dependent Claim
23 words
The LCD according to claim 1 , wherein the first electrode is a pixel electrode and the second electrode is a counter electrode.
Claim 14
Dependent Claim
20 words
The LCD according to claim 1 , wherein the first electrode and the second electrode are made of opaque metal.
Claim 15
Dependent Claim
15 words
The LCD according to claim 12 , wherein the opaque metal is aluminum or chromium.
Claim 16
Dependent Claim
20 words
The LCD according to claim 1 , wherein the first electrode and the second electrode are made of transparent metal.
Claim 17
Dependent Claim
15 words
The LCD according to claim 14 , wherein the transparent metal is Indium Tin Oxide.
References Cited (Backward Citations)
US5113274A
Cited
US5223960A
Cited
US5303074A
Cited
US5598285A
Cited
US5666179A
Cited
US5381252A
Cited
US5745206A
Cited
US5621558A
Cited
US5818558A
Cited
US5748275A
Cited
US5677747A
Cited
US5986735A
Cited
US6005650A
Cited
US5946067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-23 | 2004-07-24 | 2005-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-23 | 2008-07-24 | 2009-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-23 | 2012-07-24 | 2013-01-23 | $7700.00 | Window Closed / Lapsed |