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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(qǐng)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

In Example 1 and Example 3 described above, the control signal given to the gate for enabling conduction (ON) or non-conduction (OFF) of the transistor 130 requires an amplitude of from ?5 V to 8 V. When the control signal having an amplitude of from ?5 V to 8 V is generated directly from the control circuit 114, it is reasonable to embed the control circuit 114 in another IC having high breakdown voltage. Moreover, by providing a level shifter converting an amplitude of from 0 V to 5 V to an amplitude of from ?5 V to 8 V on the element substrate 10 of the liquid crystal panel 110, the control circuit 114 can be embedded in the driving IC 103. By providing such a level shifter on the element substrate 10 side, the driving IC 103 can be reduced in size and power consumption as a who.

Second Exemplary Embodiment

Liquid Crystal Device

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