| 摘要 |
<P>PROBLEM TO BE SOLVED: To to enhance a display grade by suppressing an after image phenomenon and in an active matrix type display device. <P>SOLUTION: A storage capacitor line potential switching circuit 101 switches potential of a storage capacitor line 217 from first potential Vsc1 to second potential Vsc2 higher than the first potential Vsc1, and at the same time, a power source potential switching circuit 102 switches potential of a power source line 215 from first power source potential PVdd1 to second power source potential PVdd2 lower than the first power source potential PVdd1. By a synergistic effect of them, gate potential Vg of a TFT 214 for drive becomes higher than threshold Vtp to its source potential. If a positive hole is trapped to a gate insulating film of the TFT 214 for drive by writing of a display signal D in the previous time, the positive hole is extracted from the gate insulating film to a source or a drain. Thus, electronic characteristics of the TFT 214 for drive are initialized. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
