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

專利號(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
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)

The element substrate 10 is larger than the counter substrate 20. These substrates are bonded to each other to be spaced apart from each other by interposing a sealant 40 disposed along the outer edge of the counter substrate 20. A method for forming the liquid crystal layer 50 in a space enclosed by the sealant 40 includes, for example, a one drop fill (ODF) method in which liquid crystal is dropped inside the sealant 40 disposed in a frame shape to bond the element substrate 10 and the counter substrate 20 under reduced pressure.

As the sealant 40, for example, an adhesive such as a thermosetting or ultraviolet curable epoxy resin is employed. The sealant 40 is mixed with a spacer (not illustrated) configured to keep the space between the pair of substrates constant.

A display region E1 in which a plurality of pixels P are arrayed in a matrix shape is provided inside of the sealant 40. In addition, a partition portion 21 is provided in a peripheral region E2 provided between the sealant 40 and the display region E1, to surround the display region E1. The partition portion 21 is made, for example, of a metal or a metallic oxide having a light shielding property. Note that, in addition to the pixels P that contribute to displaying, the display region E1 may include a plurality of dummy pixels.

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