US5274481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer dispersed liquid crystal device having partitions between different colors formed by etch-printing
Assignee: Samsung Display Co Ltd
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Filing: 1992-03-03
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Granted: 1993-12-28
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Expires: 2012-03-03
Abstract
Abstract A plane display apparatus in which R, G and B liquid crystal cells are isolated from each other by means of partition walls, and a pair of ITO electrodes are formed on each of the cells and between a pair of substrates, wherein the cells can be arranged either in a matrix form or in a linear form and each pair of the ITO electrodes is supplied with a single voltage, the liquid crystal cells having different driving characteristics respectively.
Inventors
- 👤 Si H. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:05
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133377; G02F1/1334; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02F1/137; G02F1/13725; G02F2203/00; G02F2203/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A method of producing a plane display device comprising: providing a first substrate with a first electrode therein, forming an array of electrically insulative partition walls on said electrode by etch-printing, said array of partition walls forming cells isolated from one another, applying a polymer containing red, green or blue colored liquid crystals, uniformly distributed therein, onto said substrate to fill all of said cells, fixing the polymer in selected cells and removing the polymer from the remaining cells by etch-printing, successively repeating the applying, fixing and removing of polymer containing each of the other colored liquid crystals to form a resulting arrangement in which each cell contains liquid crystal of one respective color and horizontally or vertically adjacent cells contain different colored liquid crystals, and assembling a second electrode and a second substrate on said cells opposite said first electrode.
Claim 2
Independent Claim
141 words
A method of producing a plane display device comprising: providing a first substrate with a first electrode therein, forming an array of electrically insulative partition walls on said electrode by etch-printing, said array of partition walls forming cells isolated from one another, applying a polymer containing red, green or blue colored liquid crystals, uniformly distributed therein, onto said substrate to fill all of said cells, fixing the polymer in selected cells and removing the polymer from the remaining cells by etch-printing, successively repeating the applying, fixing and removing of polymer containing each of the other colored liquid crystals to form a resulting arrangement in which each cell contains liquid crystal of one respective color and horizontally or vertically adjacent cells contain different colored liquid crystals, and assembling a second electrode and a second substrate on said cells opposite said first electrode.
Claim 3
Dependent Claim
33 words
A method as claimed in claim 1, comprising arranging the cells in a common plane in a matrix form with successive rows of repeating orders of red, green and blue colored liquid crystals.
Claim 4
Dependent Claim
32 words
A method as claimed in claim 1, comprising arranging the cells in a common plane in the form of stripes of successively repeating orders of red, green and blue colored liquid crystals.
Claim 5
Dependent Claim
92 words
A plane display apparatus comprising: a first substrate, a first electrode covering said first substrate, an etch-printed partition of electrically insulative material forming an array of cells with insulating partition walls bounding each cell, three etch-printed liquid crystal compositions, each containing respective, individual red, green or blue colored liquid crystals, said liquid crystal compositions being disposed in said cells in an arrangement in which horizontally or vertically adjacent cells contain different colored liquid crystals, a second electrode on said cells opposite said first electrode, and a second substrate on said second electrode.
Claim 6
Dependent Claim
92 words
A plane display apparatus comprising: a first substrate, a first electrode covering said first substrate, an etch-printed partition of electrically insulative material forming an array of cells with insulating partition walls bounding each cell, three etch-printed liquid crystal compositions, each containing respective, individual red, green or blue colored liquid crystals, said liquid crystal compositions being disposed in said cells in an arrangement in which horizontally or vertically adjacent cells contain different colored liquid crystals, a second electrode on said cells opposite said first electrode, and a second substrate on said second electrode.
Claim 7
Dependent Claim
38 words
A plane display apparatus as claimed in claim 4, wherein said cells are arranged in a common plane in the form of a matrix with successive rows of repeating orders of red, green and blue colored liquid crystals.
Claim 8
Dependent Claim
35 words
A plane display apparatus as claimed in claim 4, wherein said cells are arranged in a common plane in the form of stripes of successively repeating orders of red, green and blue colored liquid crystals.
Claim 9
Dependent Claim
63 words
A plane display apparatus as claimed in claim 4, wherein said cells with liquid compositions of red, green and blue colored liquid crystals have different respective driving characteristics so that energization of said electrodes with one of the driving characteristics will drive all of the corresponding cells containing said one of the colored liquid crystals while the other cells will not be driven.
Claim 10
Dependent Claim
28 words
A plane display apparatus as claimed in claim 4, wherein said electrodes are in direct contact with the liquid crystal compositions in said cells without intervening color filters.
References Cited (Backward Citations)
JPS58117523A
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JPS61194425A
Cited
US5018840A
Cited
JPS6287937A
Cited
US5015074A
Cited
JPH01255832A
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JPH03119315A
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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) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |