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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

The driving method for the liquid crystal device 100 according to the present exemplary embodiment applies the counter electrode 23 serving as a common electrode with the COM signal that varies in the first period between the first potential and the second potential that is smaller than the first potential. A driving signal that varies between the third potential and the fourth potential that is smaller than the third potential is input to the transistor 130 serving as a switching element. Using the transistor 130, the driving signal is coupled or uncoupled to each of the first electrode 121, the second electrode 122, and the third electrode 123 of the peripheral electrode 120 in an unit of a duration equal to ? (one vertical duration) or less of the first period of the COM signal. AC signals, each of which varies between the positive polarity potential and the negative polarity potential in the second period that is longer than the first period, are input to the first electrode 121, the second electrode 122, and the third electrode 123 in a state where phases of the signals are shifted with each other, taking a potential of the COM signal as a reference. Below, the method of driving the liquid crystal device 100 will be described using specific examples.

EXAMPLE 1

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