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

專利號(hào)
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

According to this method, in each of the three electrodes, bias in the polarity of the potential can be eliminated by equalizing the durations in which the potential by the AC signal has a positive polarity and the durations in which the potential has a negative polarity. Eliminating bias in the polarity of the potential in the three electrodes configured for ion trapping makes it possible to sweep ionic impurities from the display region toward the outside without ionic impurities attracted by the electrodes being left behind.

An electronic apparatus according to an aspect of the disclosure includes the above-described liquid crystal device.

According to this configuration, an electronic apparatus including a liquid crystal device that suppresses the occurrence of display unevenness due to ionic impurities and can be driven with low power consumption can be provided.

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