Patent US5963290A successfully refreshed from Google Patents.
US5963290A
Expired / Lapsed
US
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Liquid crystal display
Assignee: Gold Charm Ltd
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Filing: 1997-04-30
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Granted: 1999-10-05
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Expires: 2017-04-30
Abstract
Abstract An LCD (Liquid Crystal Display) including two substrates sandwiching an LC layer therebetween, and causing a plurality of different kinds of regions to coexist in the LC layer is disclosed. An electrode formed with an aperture is provided on at least one of the substrates. A second electrode is also provided on the same substrate as the above electrode in alignment with the electrode. A voltage higher than a voltage to be applied between the electrode with the aperture and a counter electrode facing it is applied between the second electrode and the counter electrode, thereby controlling the rising direction of LC molecules. The LCD is easy to produce and achieves a great viewing angle. In addition, the LC contains a polymer in order to fix the rising directions of the LC molecules.
Inventors
- 👤 Hideya Murai
- 👤 Teruaki Suzuki
- 👤 Masayoshi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:21
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/1337; G02F1/133707; G02F1/133753; G02F1/137; G02F1/13775; G02F1/139; G02F1/1393; G02F1/1396; G09; G09G; G09G2300/00; G09G2300/04; G09G2300/0421; G09G2300/0426; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
A method of producing an LCD, comprising the steps of: preparing an empty panel comprising two substrates, a first electrode provided on at least one of said two substrates and formed with an aperture, and a second electrode provided on the one substrate in alignment with said first electrode; injecting LC into said empty panel; and cooling said empty panel from a temperature higher than an isotropic phase-LC layer transition temperature of LC to a temperature lower than the transition temperature while applying a voltage, higher than a voltage to be applied between said first electrode and a third electrode facing said first electrode between said second electrode and said third electrode.
Claim 2
Independent Claim
112 words
A method of producing an LCD, comprising the steps of: preparing an empty panel comprising two substrates, a first electrode provided on at least one of said two substrates and formed with an aperture, and a second electrode provided on the one substrate in alignment with said first electrode; injecting LC into said empty panel; and cooling said empty panel from a temperature higher than an isotropic phase-LC layer transition temperature of LC to a temperature lower than the transition temperature while applying a voltage, higher than a voltage to be applied between said first electrode and a third electrode facing said first electrode between said second electrode and said third electrode.
Claim 3
Dependent Claim
13 words
A method as claimed in claim 1, wherein the LC contains a polymer.
Claim 4
Dependent Claim
33 words
A method as claimed in claim 1, wherein the LC contains one of a monomer and an oligomer, the monomer or the oligomer being polymerized in the LC after injection of the LC.
Claim 5
Dependent Claim
36 words
A method as claimed in claim 1, wherein an individual pixel comprises a plurality of regions comprising four regions and having a different twisting direction of an LC director and a rising direction of LC molecules.
Claim 6
Dependent Claim
21 words
An LCD as claimed in claim 1, wherein said second electrode is positioned on a diagonal line of an individual pixel.
Claim 7
Dependent Claim
22 words
An LCD as claimed in claim 1, wherein said second electrode includes a portion parallel to longer sides of an individual pixel.
Claim 8
Independent Claim
104 words
A method of producing an LCD, comprising the steps of: preparing an empty panel comprising two substrates, a first electrode provided on at least one of said two substrates, and a second electrode provided on, but insulated from, said first electrode; injecting LC into said empty panel; and cooling said empty panel from a temperature higher than an isotropic phase-LC layer transition temperature of LC to a temperature lower than the transition temperature while applying a voltage, higher than a voltage to be applied between said first electrode and a third electrode facing said first electrode, between said second electrode and said third electrode.
Claim 9
Independent Claim
104 words
A method of producing an LCD, comprising the steps of: preparing an empty panel comprising two substrates, a first electrode provided on at least one of said two substrates, and a second electrode provided on, but insulated from, said first electrode; injecting LC into said empty panel; and cooling said empty panel from a temperature higher than an isotropic phase-LC layer transition temperature of LC to a temperature lower than the transition temperature while applying a voltage, higher than a voltage to be applied between said first electrode and a third electrode facing said first electrode, between said second electrode and said third electrode.
Claim 10
Dependent Claim
12 words
A method as claimed in claim 7, the LC contains a polymer.
Claim 11
Dependent Claim
33 words
A method as claimed in claim 7, wherein the LC contains one of a monomer and an oligomer, the monomer or the oligomer being polymerized in the LC after injection of the LC.
Claim 12
Dependent Claim
36 words
A method as claimed in claim 7, wherein an individual pixel comprises a plurality of regions comprising four regions and having a different twisting direction of an LC director and a rising direction of LC molecules.
Claim 13
Dependent Claim
21 words
An LCD as claimed in claim 7, wherein said second electrode is positioned on a diagonal line of an individual pixel.
Claim 14
Dependent Claim
22 words
An LCD as claimed in claim 7, wherein said second electrode includes a portion parallel to longer sides of an individual pixel.
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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) | 2002-10-04 | 2003-04-05 | 2003-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-04 | 2007-04-05 | 2007-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-04 | 2011-04-05 | 2011-10-05 | $7700.00 | Window Closed / Lapsed |