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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
技術領域
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

Thus, in Example 4, in (6+1) vertical durations or (6?1) vertical durations of the COM signal, the control signal C1 is in an ON state once, and the driving signal S1 is applied to the first electrode 121 though the first transistor 131. That is, the duration in which the driving signal S1 is applied to the first electrode 121 is shorter than that in Example 1 or Example 3 described above. However, the liquid crystal device 200 according to this exemplary embodiment, the first holding capacitor 141 is provided between the drain, coupled to the first electrode 121 of the first transistor 131 and the wiring line 116 to which the COM signal is supplied, and thus the potential of the first electrode 121, when the driving signal S1 is applied, is held by the first holding capacitor 141.

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