US5963290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 00:13
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.
References Cited (Backward Citations)
US5013137A
Cited
JPS63106624A
Cited
GB2213305A
Cited
EP0549283A2
Cited
JPH0643461A
Cited
US5309264A
Cited
JPH0713164A
Cited
JPH07273614A
Cited
US5710611A
Cited
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 |