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

專(zhuān)利號(hào)
US10867567B2
公開(kāi)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(lèi)
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(shuō)明書(shū)

Similarly, the alignment film 24 covering the counter electrode 23 on the counter substrate 20 side is a group of columnar bodies 24a made of silicon oxide and obtained, for example, by oblique deposition of silicon oxide. The angle θb formed by the normal line to the base substrate 20s and the film forming direction illustrated with the solid arrow is, for example, 45 degrees. The liquid crystal molecules LC is substantially vertically aligned with respect to the film surface (columnar body 24a) of the alignment film 24, which is an inorganic alignment film, having a state of pre-tilt toward the film forming direction. Note that, in FIG. 3, the columnar bodies 18a and 24a are illustrated to have the same size. However, individual columnar bodies 18a and 24a do not necessarily have the same size or grow in the same direction, and the size or the growing direction varies.

The liquid crystal layer 50 is held between the element substrate 10 including the pixel electrode 15 on which the alignment film 18 is formed and the counter substrate 20 including the counter electrode 23 on which the alignment film 24 is formed. A polarizing element 81 and 82 is disposed on each of the light incidence side and the light exit side of such a liquid crystal panel 110, and is used. Note that the present exemplary embodiment employs a configuration in which light is incident on the liquid crystal panel 110 from the counter substrate 20 side. However, the configuration is not limited to this, and it may be possible to employ a configuration in which light is incident from the element substrate 10 side.

權(quán)利要求

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