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Liquid crystal device, liquid crystal device driving method, and electronic apparatus

專利號
US10867567B2
公開日期
2020-12-15
申請人
SEIKO EPSON CORPORATION(JP Tokyo)
發(fā)明人
Satoshi Yatabe; Naoki Tomikawa
IPC分類
G09G3/36; G02F1/1343
技術(shù)領(lǐng)域
potential,electrode,signal,driving,crystal,com,in,ac,liquid,polarity
地域: Tokyo

摘要

A liquid crystal device includes, peripheral electrodes including three electrodes for ion trapping, and a transistor coupled to each of the three electrodes. A common signal (COM signal) that varies between a first potential and a second potential in a first period is applied to a counter electrode. A driving signal that varies between a third potential and a fourth potential is input to the transistor. The driving signal is coupled to or uncoupled from the peripheral electrodes by the transistor in a unit of a duration equal to or less than ? of the first period. AC signals varying between a positive-polarity potential and a negative-polarity potential, with a potential of the common signal being a reference, in a second period longer than the first period, are applied to the three electrodes of the peripheral electrodes, in a state where phases of the AC signals are shifted mutually.

說明書

A liquid crystal device according to another aspect of the present disclosure includes, a first substrate in which a plurality of pixel electrodes are arranged in a display region, a second substrate in which a common electrode is disposed throughout the display region, the common electrode being supplied with a common signal potential varying between a first potential and a second potential, which is lower than the first potential, in a first period, a liquid crystal layer held between the first substrate and the second substrate opposing mutually with a sealant interposed therebetween, at least three electrodes for ion trapping, the at least three electrodes being disposed at intervals from one another, in other words, the at least three electrodes being disposed at distances from one another, and between the display region of the first substrate and the sealant, a switching element coupled to each of the at least three electrodes, and a holding capacitor coupled between each of the at least three electrodes and a wiring line, to which a potential of the common signal is supplied. A driving signal varying between a third potential and a fourth potential lower than the third potential is input to the switching element, in a unit of a duration equal to or less than ? of the first period, and AC signals varying between a positive-polarity potential and a negative-polarity potential, with a potential of the common signal being a reference, in a second period, which is longer than the first period, are applied to the at least three electrodes in a state where the phases of the AC signals are shifted from one another.

權(quán)利要求

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