G - Physics – 09 – G
Patent
G - Physics
09
G
G09G 3/36 (2006.01) G02F 1/133 (2006.01)
Patent
CA 2065981
JA9-91-007 METHOD FOR DRIVING LCD AND APPARATUS FOR DRIVING LCD AND LCD APPARATUS ABSTRACT To provide a liquid crystal display apparatus that simultaneously satisfies both good contrast ratios and good gradation at large viewing angles. A liquid crystal display apparatus in normally-white mode in which gray scale displaying is obtained by providing different applied voltages corresponding to different gray scale levels, respectively, is characterized in that, in a curve showing the relation between an applied voltage and light transmittance ( V-T curve ) the lowest applied voltage is set so as to be shifted in the direction of a monotonously decreasing area of the V-T curve. By shifting the lowest applied voltage in the V-T curve in the direction of a monotonously decreasing area of the V-T curve, brightness or gradation is prevented from being inverted. A liquid crystal display apparatus in normally-white mode in which gray scale displaying is obtained by providing different applied voltages corresponding to different gray scale levels, respectively, characterized in that in a curve showing the relation between the an applied voltage and light transmittance (thereafter called V-T curve) the lowest applied voltage is set so as to be shifted in the direction of a monotonously decreasing area of the V-T curve. By shifting the lowest applied voltage in the V-T curve in the direction of a monotonously decreasing area of the V-T curve, brightness or gradation is prevented from being inverted.
Ikezaki Mitsuru
Suzuki Shunji
Takano Hideo
International Business Machines Corporation
Kerr Alexander
LandOfFree
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