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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 relation to this driving signal S1, the control signal C1 relating to ON/OFF control of the first transistor 131 coupled to the first electrode 121 in Example 4 is in an ON state from time t1 to time t2 in which the COM signal has the second potential (0 V) and the driving signal S1 has the third potential (5 V), and is in an ON state from time t8 to time t9 in which the COM signal has the first potential (5 V) and the driving signal S1 has the fourth potential (0 V). Then, the control signal C1 is in an ON state from time t13 to time t14 in which the COM signal has the second potential (0 V) and the driving signal S1 has the third potential (5 V), and is in an ON state from time t18 to time t19 in which the COM signal has the first potential (5 V) and the driving signal S1 has the fourth potential (0 V). Furthermore, the control signal C1 is in an ON state from time t25 to time t26 in which the COM signal has the second potential (0 V) and the driving signal S1 has the third potential (5V). That is, at the timing when the potential of the driving signal S1 varies from the fourth potential (0 V) to the third potential (5 V) or at the timing when the potential of the driving signal S1 varies from the third potential (5 V) to the fourth potential (0 V), the control signal C1 is turned to an ON state, and, in the duration in which the fourth potential (0 V) or the third potential (5 V) is maintained, the control signal C1 is in an OFF state.

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