Image display and its driving method, and driving method of electronic apparatus
A technology of an image display device and a driving method, which is applied to static indicators, electric solid-state devices, instruments, etc., can solve the problems of limited Vth correction range, difficulty in Vth correction, etc., and achieves improved image quality reliability, easy threshold voltage compensation, Suppress discrete effects
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Embodiment 1
[0097] FIG. 7 is a graph showing the relationship between the lighting time of the driving element Q1 and the threshold voltage shift ΔV when no reverse bias is applied to the driving element Q1 in the pixel circuit shown in FIG. 1 . 8 and 9 are graphs showing the relationship between the lighting time of the driving element Q1 and the threshold voltage shift when a reverse bias is applied to the driving element Q1 in the pixel circuit shown in FIG. 1 . In addition, in FIG. 8 and FIG. 9, the operation is repeated with the lighting time of 10 minutes and the non-lighting time of 20 minutes. In particular, FIG. 8 shows the case where the reverse bias voltage is "-1V". A case where the reverse bias voltage is "-5V" is shown.
[0098] As shown in Fig. 7, in the case of no reverse bias applied, a threshold voltage shift of about 0.8V can be observed in about 60 hours of continuous operation. In addition, reducing the threshold voltage drift to about 0.45V in Figure 8, the effect o...
Embodiment 2
[0105] FIG. 10 and FIG. 11 are graphs showing characteristics having the same situation as FIG. 7 or FIG. 9 , respectively. And the characteristics shown in Fig. 10, have shown the following situation: namely carry out repetition with lighting time 3 minutes, non-lighting time 17 minutes, use continuously 16 hours in the daytime, 8 hours are not lit at night, and do not light up at night When turned on, the gate, source, and drain voltages of the drive element are simply opened. In addition, the following situation is shown in FIG. 11 : that is, repeating the lighting time of 3 minutes and the non-lighting time of 17 minutes, continuously using it for 16 hours during the day, and not lighting it for 8 hours at night, and when not lighting it at night, the The voltage between the drain and the source was maintained at the same potential, and a reverse bias of -5V was applied to the voltage between the gate and the source for the first hour when the light was not lit, and 0V was...
Embodiment 3
[0109] Figure 12 shows that the operation is repeated with a lighting time of 3 minutes and a non-lighting time of 17 minutes, and a reverse bias of -5V is applied between the gate and the source only in the first 5 minutes of non-lighting. A graph of the properties. As shown in the figure, the time-dependent deterioration of the threshold voltage can be prevented even in the case where the reverse bias is applied only for the first 5 minutes of the 17 minutes of non-lighting.
[0110] In addition, if the characteristics shown in Figure 12 are compared with those shown in Figure 9, even with the same reverse bias voltage of -5V, the loading time of the reverse bias is longer in Figure 9 (Figure 9: 20 minutes, Figure 12: 5 minutes) this side, the dispersion of the threshold voltage drift is smaller. In addition, if the characteristics shown in Fig. 11 are compared with those shown in Fig. 9, the continuous loading time of reverse bias is shorter in Fig. 9 (Fig. 9: continuous 2...
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