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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

As illustrated in FIG. 6, on the element substrate 10 of the liquid crystal panel 110 (liquid crystal device 100), the first electrode 121, the second electrode 122, and the third electrode 123, which constitute the peripheral electrode 120, are disposed in the peripheral region E2 between the outer edge of the display region E1 and the sealant 40, and are provided at different positions and at different distances from the display region E1 to be spaced apart from each other. In the peripheral region E2, the peripheral electrode 120 of the element substrate 10 and the counter electrode 23 of the counter substrate 20 are disposed to oppose each other by interposing the liquid crystal layer 50. In the peripheral region E1, the pixel electrode 15 of the element substrate 10 and the counter electrode 23 of the counter substrate 20 are disposed to oppose each other by interposing the liquid crystal layer 50. In other words, the liquid crystal device 100 includes a liquid crystal capacitor (constituted with the pixel electrode 15, liquid crystal layer 50 and counter electrode 23) for each pixel P in the display region E1, and in the peripheral region E2, also includes a liquid crystal capacitor (constituted with the first electrode 121, the second electrode 122 and the third electrode 123, and with liquid crystal layer 50 and counter electrode 23) for each of the three electrodes 121, 122, and 123 of the pixel electrode 120.

權(quán)利要求

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