Patent US5253091A successfully refreshed from Google Patents.
US5253091A
Expired / Lapsed
US
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Liquid crystal display having reduced flicker
Assignee: AUO Corp
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Filing: 1991-07-09
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Granted: 1993-10-12
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Expires: 2011-07-09
Abstract
Abstract A liquid crystal display and a method of operating the display. A plurality of row conductors and a plurality of column conductors control pixels arranged in a matrix of rows and columns. A driver circuit applies a first data signal to first column conductors and a second data signal to second column conductors. The first and second column conductors are adjacent alternate conductors in a row direction of the matrix. The polarity of the first and second data signals are opposite to each other. Pixels in a row may be connected to the same row conductor while pixels in each column are alternately connected, respectively, to one column conductor to which the first data signal is applied and to one column conductor to which the second data signal is applied. The pixels in each row may be alternately connected respectively to one of two adjacent row conductors. The polarity of the first and second data signals is held constant for a cycle time which is substantially equal to a frame time of the liquid crystal display.
Inventors
- 👤 Shinichi Kimura
- 👤 Hiroshi Suzuki
- 👤 Hidefumi Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:20
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G2320/00; G09G2320/02; G09G2320/0247; G09G3/3607; G09G3/3614
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
A liquid crystal display comprising: a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; a driver means for applying a first data signal to first column conductors, and for applying a second data signal to second column conductors, said first column conductors and said second column conductors being adjacent alternate column conductors in a row direction of said matrix, polarity of said first and second data signals being opposite to each other; pixels in a row being connected to the same row conductor; and pixels in each column being alternately connected respectively to one column conductor to which said first data signal is applied, and to one column conductor to which said second data signal is applied, wherein the polarity of said first and second data signals are held constant for a cycle time which is substantially equal to a frame cycle of said liquid crystal display.
Claim 2
Dependent Claim
160 words
A liquid crystal display comprising: a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; a driver means for applying a first data signal to first column conductors, and for applying a second data signal to second column conductors, said first column conductors and said second column conductors being adjacent alternate column conductors in a row direction of said matrix, polarity of said first and second data signals being opposite to each other; pixels in a row being connected to the same row conductor; and pixels in each column being alternately connected respectively to one column conductor to which said first data signal is applied, and to one column conductor to which said second data signal is applied, wherein the polarity of said first and second data signals are held constant for a cycle time which is substantially equal to a frame cycle of said liquid crystal display.
Claim 3
Dependent Claim
26 words
A liquid crystal display as in claim 1, wherein said pixel includes a thin film transistor and a pixel electrode connected to said thin film transistor.
Claim 4
Dependent Claim
133 words
a liquid crystal display comprising: a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; a driver means for applying a first data signal to first column conductors and for applying a second data signal to second column conductors, said first column conductors and said second column conductors being adjacent alternate column conductors in a row direction of said matrix, polarity of said first and second data signals being opposite to each other; pixels in each row being alternately connected to one of two adjacent row conductors; and pixels in each column being alternately connected respectively to one column conductor to which said first data signal is applied and to one column conductor to which said second data signal is applied.
Claim 5
Dependent Claim
133 words
a liquid crystal display comprising: a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; a driver means for applying a first data signal to first column conductors and for applying a second data signal to second column conductors, said first column conductors and said second column conductors being adjacent alternate column conductors in a row direction of said matrix, polarity of said first and second data signals being opposite to each other; pixels in each row being alternately connected to one of two adjacent row conductors; and pixels in each column being alternately connected respectively to one column conductor to which said first data signal is applied and to one column conductor to which said second data signal is applied.
Claim 6
Dependent Claim
38 words
A liquid crystal display as in claim 3, wherein the polarity of said first and second data signals are held constant for a cycle time which is substantially equal to a frame cycle of said liquid crystal display.
Claim 7
Dependent Claim
26 words
A liquid crystal display as in claim 3, wherein said pixel includes a thin film transistor and a pixel electrode connected to said thin film transistor.
Claim 8
Independent Claim
179 words
A method for driving a liquid crystal display comprising a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; and means for applying a first data signal to first of said column conductors, and for applying a second data signal to second of said column conductors, the improvement comprising: selecting polarity of said first and second data signals to be opposite to each other, arranging said first column conductors and said second column conductors to be adjacent alternate column conductors in a row direction of said matrix, and connecting the pixels so that pixels in the same row are connected to the same row conductor; and pixels in each column are alternately connected respectively to one first column conductor to which said first data signal is applied, and to one second column conductor to which said second data signal is applied; the polarity of said first and second data signals being held constant for a time substantially equal to a frame cycle of said liquid crystal display.
Claim 9
Independent Claim
179 words
A method for driving a liquid crystal display comprising a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; and means for applying a first data signal to first of said column conductors, and for applying a second data signal to second of said column conductors, the improvement comprising: selecting polarity of said first and second data signals to be opposite to each other, arranging said first column conductors and said second column conductors to be adjacent alternate column conductors in a row direction of said matrix, and connecting the pixels so that pixels in the same row are connected to the same row conductor; and pixels in each column are alternately connected respectively to one first column conductor to which said first data signal is applied, and to one second column conductor to which said second data signal is applied; the polarity of said first and second data signals being held constant for a time substantially equal to a frame cycle of said liquid crystal display.
Claim 10
Independent Claim
157 words
A method for driving a liquid crystal display comprising a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; and means for applying a first data signal to first of said column conductors and for applying a second data signal to second of said column conductors, the improvement comprising: selecting polarity of said first and second data signals to be opposite to each other; arranging said first column conductors and said second column conductors to be adjacent alternate column conductors in a row direction of said matrix, and connecting said pixels so that pixels in each row are alternately connected respectively to one of two adjacent row conductors; and said pixels in each column are alternately connected respectively to one first column conductor to which said first data signal is applied and to one second column conductor to which said second data signal is applied.
Claim 11
Independent Claim
157 words
A method for driving a liquid crystal display comprising a plurality of row conductors; a plurality of column conductors; a plurality of pixels arranged in a matrix of rows and columns; and means for applying a first data signal to first of said column conductors and for applying a second data signal to second of said column conductors, the improvement comprising: selecting polarity of said first and second data signals to be opposite to each other; arranging said first column conductors and said second column conductors to be adjacent alternate column conductors in a row direction of said matrix, and connecting said pixels so that pixels in each row are alternately connected respectively to one of two adjacent row conductors; and said pixels in each column are alternately connected respectively to one first column conductor to which said first data signal is applied and to one second column conductor to which said second data signal is applied.
Claim 12
Dependent Claim
33 words
A method as in claim 7, wherein the polarity of said first and second data signals is held constant for a time substantially identical to a frame cycle of said liquid crystal display.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-10-11 | 1997-04-12 | 1997-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-11 | 2001-04-12 | 2001-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-11 | 2005-04-12 | 2005-10-12 | $7700.00 | Window Closed / Lapsed |