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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

The liquid crystal light valve 1210 is a light valve to which the liquid crystal device 100 according to the first exemplary embodiment including the above described ion trapping mechanism is applied. A pair of light-polarizing elements disposed in a crossed-Nicols state on the incident side and the emission side of the color light of the liquid crystal panel 110 are disposed with a gap interposed between the pair of light-polarizing elements. The same applies to the other liquid crystal light valves 1220 and 1230.

According to this projection-type display apparatus 1000, the above-described liquid crystal device 100 is used as the liquid crystal light valves 1210, 1220, and 1230. Thus, the projection-type display apparatus 1000 can be provided that can be reduced in power consumption, can be improved in terms of a display problem due to ionic impurities, and can maintain excellent display quality over a long period. Note that, even when the liquid crystal device 200 according to the above described second exemplary embodiment is used as the liquid crystal light valves 1210, 1220, and 1230, effects similar to these effects are achieved.

Note that the disclosure is not limited to the exemplary embodiment described above, and the exemplary embodiment described above can be variously changed and modified. Such modified examples are described below.

MODIFIED EXAMPLE 1

權利要求

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