US5959708A
Expired / Lapsed
US
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Liquid crystal display having a conductive high molecular film for preventing the fringe field in the in-plane switching mode
Assignee: Hydis Technologies Co Ltd
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Filing: 1997-06-19
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Granted: 1999-09-28
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Expires: 2017-06-19
Abstract
Abstract Disclosed is a liquid crystal display device having a pixel electrode and a counter electrode formed on one substrate device. The device includes: a first transparent substrate having a conductive high molecular film formed on the pixel electrode and the counter electrode; a second transparent substrate arranged parallel to the first transparent substrate; and a liquid crystal material disposed between the first and second transparent substrates, for selectively scattering or transmitting light in response to a prescribed input.
Inventors
- 👤 Seung-Hee Lee
- 👤 Hyang-Yul Kim
- 👤 Bong-Gyu Roh
- 👤 Deuk-Su Lee
- 👤 Han-Jun Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134363
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
86 words
A liquid crystal display device wherein a counter electrode and a pixel electrode are formed on a transparent insulating substrate, comprising: a first transparent insulating substrate having a conductive high molecular film formed on the pixel electrode and counter electrode, preventing the fringe field in the in-plane switching mode; a second transparent insulating substrate arranged parallel to the first transparent insulating substrate; and a liquid crystal material disposed between the first and second transparent insulating substrates, for selectively transmitting light in response to a prescribed input.
Claim 2
Dependent Claim
86 words
A liquid crystal display device wherein a counter electrode and a pixel electrode are formed on a transparent insulating substrate, comprising: a first transparent insulating substrate having a conductive high molecular film formed on the pixel electrode and counter electrode, preventing the fringe field in the in-plane switching mode; a second transparent insulating substrate arranged parallel to the first transparent insulating substrate; and a liquid crystal material disposed between the first and second transparent insulating substrates, for selectively transmitting light in response to a prescribed input.
Claim 3
Dependent Claim
31 words
The liquid crystal display device as claimed in claim 1, wherein said high molecular film comprises a material selected from a group consisting of polyacetylene, polyaniline, p-phenylene, polypyrrole, polythiophene and p-phenylenevinylene.
Claim 4
Dependent Claim
19 words
The liquid crystal display device as claimed in claim 2, wherein said high molecular film further comprises a photoinitiator.
Claim 5
Dependent Claim
26 words
The liquid crystal display device as claimed in claim 1, wherein said high molecular film has a thickness equal to or less than a cell gap.
Claim 6
Dependent Claim
135 words
A liquid crystal display device wherein a counter electrode and a pixel electrode are formed on a transparent insulating substrate, comprising: a first transparent insulating substrate having (a) a high molecular film formed on the pixel electrode and the counter electrode, preventing the fringe field in the in-plane switching mode, (b) a conductor inserted in said high molecular films, the conductor being electrically contacted with said pixel electrode and said counter electrode, and having the same height as said high molecular film, and an alignment film formed on said substrate between said counter electrode and said pixel electrode; a second transparent insulating substrate arranged parallel to the first transparent insulating substrate; and a liquid crystal material disposed between the first and second transparent insulating substrates, for selectively transmitting light in response to a prescribed input.
Claim 7
Dependent Claim
135 words
A liquid crystal display device wherein a counter electrode and a pixel electrode are formed on a transparent insulating substrate, comprising: a first transparent insulating substrate having (a) a high molecular film formed on the pixel electrode and the counter electrode, preventing the fringe field in the in-plane switching mode, (b) a conductor inserted in said high molecular films, the conductor being electrically contacted with said pixel electrode and said counter electrode, and having the same height as said high molecular film, and an alignment film formed on said substrate between said counter electrode and said pixel electrode; a second transparent insulating substrate arranged parallel to the first transparent insulating substrate; and a liquid crystal material disposed between the first and second transparent insulating substrates, for selectively transmitting light in response to a prescribed input.
Claim 8
Dependent Claim
19 words
The liquid crystal display device as claimed in claim 5, wherein said high molecular film further comprises a photoinitiator.
Claim 9
Dependent Claim
19 words
The liquid crystal display device as claimed in claim 5, wherein said high molecular film is a photosensitive insulator.
Claim 10
Dependent Claim
19 words
The liquid crystal display device as claimed in claim 5, wherein said high molecular film is a photosensitive conductor.
Claim 11
Dependent Claim
26 words
The liquid crystal display device as claimed in claim 5, wherein said high molecular film has a thickness equal to or less than a cell gap.
Claim 12
Dependent Claim
17 words
The liquid crystal display device as claimed in claim 5, wherein said conductor is indium tin oxide.
Claim 13
Independent Claim
112 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming a first conductive high molecular film on the counter electrode pattern, preventing the fringe field in the in-plane switching mode; forming a insulating layer on the whole surface of the substrate; forming a pixel electrode pattern on a selected portion of the insulating layer; forming a second conductive high molecular film on the pixel electrode pattern, preventing the fringe field in the in-plane switching mode; and forming an alignment layer on the whole surface of the substrate.
Claim 14
Independent Claim
112 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming a first conductive high molecular film on the counter electrode pattern, preventing the fringe field in the in-plane switching mode; forming a insulating layer on the whole surface of the substrate; forming a pixel electrode pattern on a selected portion of the insulating layer; forming a second conductive high molecular film on the pixel electrode pattern, preventing the fringe field in the in-plane switching mode; and forming an alignment layer on the whole surface of the substrate.
Claim 15
Dependent Claim
90 words
The method as claimed in claim 11, wherein said step for forming said first conductive high molecular film and said second conductive high molecular film, each comprises the steps of: coating a film on the whole surface of the substrate, the film comprising a conductive high molecular material mixed with a solvent; curing the film; forming a photoresist mask pattern on portions of the film over the counter electrode and the pixel electrode; removing exposed portions of the film using said photoresist mask pattern; and removing said photoresist mask pattern.
Claim 16
Dependent Claim
40 words
The method as claimed in claim 12, wherein said first and second high molecular films are respectively formed by a chemical synthesis of one or more materials selected from a group consisting of polyacetylene, polyaniline, p-phenylene, polypryrrole, polythiophene and p-phenylenevinylene.
Claim 17
Dependent Claim
72 words
The method as claimed in claim 11, wherein said step of forming first and second conductive high molecular films, comprises the steps of: coating a film on the whole surface of the substrate, the film comprising a conductive high molecular material mixed with a solvent; curing the film; irradiating ultraviolet rays on portions of the film over the counter electrode and the pixel electrode; and removing the irradiated portions of the film.
Claim 18
Dependent Claim
40 words
The method as claimed in claim 14, wherein said first and second high molecular films are respectively formed by a chemical synthesis of one or more materials selected from a group consisting of polyacetylene, polyaniline, p-phenylene, polypryrrole, polythiophene and p-phenylenevinylene.
Claim 19
Dependent Claim
23 words
The method as claimed in claim 11, wherein said high molecular films have a thickness equal to or less than a cell gap.
Claim 20
Independent Claim
120 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming an insulating layer on the whole surface of the transparent substrate; forming a channel layer on a portion of the insulating layer over the gate electrode pattern; forming a pixel electrode pattern on a selected portion of the insulating layer; removing the insulating layer on the counter electrode; forming conductive high molecular film patterns on the pixel electrode pattern and the counter electrode pattern, preventing the fringe field in the in-plane switching mode; and forming an alignment layer on the whole surface of the substrate.
Claim 21
Independent Claim
120 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming an insulating layer on the whole surface of the transparent substrate; forming a channel layer on a portion of the insulating layer over the gate electrode pattern; forming a pixel electrode pattern on a selected portion of the insulating layer; removing the insulating layer on the counter electrode; forming conductive high molecular film patterns on the pixel electrode pattern and the counter electrode pattern, preventing the fringe field in the in-plane switching mode; and forming an alignment layer on the whole surface of the substrate.
Claim 22
Dependent Claim
80 words
The method as claimed in claim 17, wherein said step of forming conductive high molecular film patterns, comprises the steps of: coating a film on the whole surface of the substrate, the film comprising a conductive high molecular material mixed with a solvent; curing the film; forming a photoresist mask pattern on portions of film over the counter electrode and the pixel electrode; removing exposed portions of the film using said photoresist mask pattern; and removing said photoresist mask pattern.
Claim 23
Dependent Claim
38 words
The method as claimed in claim 18, wherein said high molecular film patterns are respectively formed by a chemical synthesis of one or more materials selected from a group consisting of polyacetylene, polyaniline, p-phenylene, polypryrrole, polythiophene and p-phenylenevinylene.
Claim 24
Dependent Claim
69 words
The method as claimed in claim 17, wherein said step of forming conductive high molecular film patterns, comprises the steps of: coating a film on the whole surface of the substrate, the film comprising a conductive high molecular material mixed with a solvent; curing the film; irradiating ultraviolet ray on portions of film over the counter electrode and the pixel electrode; and removing the irradiated portions of the film.
Claim 25
Dependent Claim
38 words
The method as claimed in claim 20, wherein said high molecular film patterns are respectively formed by a chemical synthesis of one or more materials selected from a group consisting of polyacetylene, polyaniline, p-phenylene, polypryrrole, polythiophene and p-phenylenevinylene.
Claim 26
Dependent Claim
24 words
The method as claimed in claim 17, wherein said high molecular film patterns have a thickness equal to or less than a cell gap.
Claim 27
Independent Claim
166 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming an insulating layer on the whole surface of the transparent substrate; forming a channel layer on a portion of the insulating layer over the gate electrode pattern; forming a pixel electrode pattern on a selected portion of the insulating layer; removing the insulating layer on the counter electrode; forming photosensitive high molecular film patterns exposing a core portion of the pixel electrode pattern and a core portion of the counter electrode pattern at a selected height or the whole surface, preventing the fringe field in the in-plane switching mode; filling the exposed portions with a conductor; removing said high molecular film at portions except the upper portion of the counter electrode and the upper portion of the pixel electrode; and forming an alignment layer on the whole surface of the substrate.
Claim 28
Independent Claim
166 words
A method for fabricating a liquid crystal display device, the method comprising the steps of: providing a transparent insulating substrate; forming a counter electrode pattern and a gate electrode pattern on the transparent substrate; forming an insulating layer on the whole surface of the transparent substrate; forming a channel layer on a portion of the insulating layer over the gate electrode pattern; forming a pixel electrode pattern on a selected portion of the insulating layer; removing the insulating layer on the counter electrode; forming photosensitive high molecular film patterns exposing a core portion of the pixel electrode pattern and a core portion of the counter electrode pattern at a selected height or the whole surface, preventing the fringe field in the in-plane switching mode; filling the exposed portions with a conductor; removing said high molecular film at portions except the upper portion of the counter electrode and the upper portion of the pixel electrode; and forming an alignment layer on the whole surface of the substrate.
Claim 29
Dependent Claim
80 words
The method as claimed in claim 23, wherein said step of forming said high molecule film, comprises the steps of: coating a film on the whole surface of the substrate, the film comprising a conductive high molecular material mixed with a solvent; curing the film; removing the film by exposure to light and by a development process, except the portions of the film existing on the upper portion of the counter electrode and the upper portion of the pixel electrode.
Claim 30
Dependent Claim
23 words
The method as claimed in claim 23, wherein said high molecular film has a thickness equal to or less than a cell gap.
Claim 31
Dependent Claim
27 words
The method as claimed in claim 23, further comprising the step of removing the alignment layer on the surface of the high molecular film and the conductor.
Claim 32
Dependent Claim
14 words
The method as claimed in claim 23, wherein said conductor is induim tin oxide.
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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) | 2002-09-27 | 2003-03-29 | 2003-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-27 | 2007-03-29 | 2007-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-27 | 2011-03-29 | 2011-09-28 | $7700.00 | Window Closed / Lapsed |