Ferroelectric liquid crystal panel driving method and liquid crystal display device

US8933869B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8933869-B2
Application numberUS-74159809-A
CountryUS
Kind codeB2
Filing dateMar 25, 2009
Priority dateMar 27, 2008
Publication dateJan 13, 2015
Grant dateJan 13, 2015

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Abstract

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The present invention relates to a method for driving a ferroelectric liquid crystal panel. A liquid crystal display device according to the present invention includes a ferroelectric liquid crystal panel having a ferroelectric liquid crystal provided between a pair of substrates, a plurality of scanning electrodes and a plurality of drive electrodes, and a plurality of pixels constituted by intersections between the plurality of scanning electrodes and the plurality of signal electrodes, and a controller for applying driving pulses to the plurality of scanning electrodes and the plurality of signal electrodes. The controller applies to the plurality of pixels first reset pulses, first selection pulses for switching the plurality of pixels, second reset pulses having a voltage or pulse width different from that of the first reset pulses, and second selection pulses having a voltage or pulse width different from that of the first selection pulses and for switching the plurality of pixels. According to the present invention, a clear image can be obtained regardless of threshold unevenness.

First claim

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What is claimed is: 1. A liquid crystal display device comprising: a ferroelectric liquid crystal panel having a ferroelectric liquid crystal provided between a pair of substrates, a plurality of scanning electrodes and a plurality of drive electrodes for driving said ferroelectric liquid crystal, and a plurality of pixels constituted by intersections between said plurality of scanning electrodes and said plurality of signal electrodes; and a controller for applying driving puls…

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What does patent US8933869B2 cover?
The present invention relates to a method for driving a ferroelectric liquid crystal panel. A liquid crystal display device according to the present invention includes a ferroelectric liquid crystal panel having a ferroelectric liquid crystal provided between a pair of substrates, a plurality of scanning electrodes and a plurality of drive electrodes, and a plurality of pixels constituted by in…
Who is the assignee on this patent?
Suguro Akira, Citizen Holdings Co Ltd
What technology area does this patent fall under?
Primary CPC classification G09G3/3629. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).