| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress a persistence phenomenon and to enhance a display grade in an active matrix type display device. <P>SOLUTION: During a backing interval, potential of a retention volume line 217 is switched from first potential V1 (for example, grounding potential) to second potential V2 (for example, potential of positive supply potential PVdd) by a potential switching circuit 103. At this time, potential of a gate of a TFT 214 for drive rises by a capacity coupling effect of retention volume 218. Thus, gate potential of the TFT 214 for drive becomes higher than its source potential. When it is considered that a hole is trapped by writing of a display signal D in the previous time in a gate insulating film of the TFT 214 for drive here, the hole is extracted from the gate insulating film to a source or a drain. Thus, electric characteristics of the TFT 214 for drive are initialized. Then, before the backing interval ends, the potential of the retention volume line 217 is switched from the second potential V2 to the first potential V1 by the potential switching circuit 103. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
