Liquid crystal device, liquid crystal device driving method, and electronic apparatus
摘要
說明書
As indicated in Example 1 and Example 3, the transistor 130 is in a coupled state in all or some of first duration in which the COM signal has the first potential (for example, 5 V) and the AC signal has the negative potential (?5 V) or second duration in which the COM signal has the second potential (for example, 0 V) and the AC signal has the positive potential (+5 V), and the transistor 130 is in an uncoupled state in other durations. Furthermore, when the COM signal is in the above-described first duration and the transistor 130 is in a coupled state, the driving signal may have the fourth potential, and when the COM signal is in the above-described second duration and the transistor 130 is in a coupled state, the driving signal may have the third potential. In this case, the potential given to the peripheral electrode 120 by the driving signal can be controlled in a unit of a duration equal to ? of the first period of the COM signal. That is, a duration in which the AC signal applied to the peripheral electrode 120 has a positive potential taking the potential of the COM signal as a reference and a duration in which the AC signal has a negative potential can be adjusted as appropriate. Especially, the potential of the AC signal is charged and maintained, as the potential of the peripheral electrode 120, in the liquid crystal capacitor constituted by the peripheral electrode 120 and the counter electrode 23 that are disposed to oppose each other with the liquid crystal layer 50 interposed between the peripheral electrode 120 and the counter electrode 23. Thus, as the duration of charging the potential of the AC signal in the liquid crystal capacitor is shorter, or as the electric capacitance of the liquid crystal capacitor is smaller, it is more difficult to maintain a positive potential or a negative potential in the peripheral electrode 120. Accordingly, from the viewpoint of sweeping ionic impurities by the scrolling of electric field, the peripheral electrode 120 needs to maintain a positive potential or a negative potential in a predetermined duration, and it is more preferable that the transistor 130 be in a coupled state in all the first duration in which the COM signal has the first potential (for example, 5 V) and the AC signal has the negative potential (?5 V) and all the second duration in which the COM signal has the second potential (for example, 0 V) and the AC signal has the positive potential (+5 V).
