Patent ID: 9704446
Date: 2017-07-11
CPC Classifications: G09G

Claim:
1. A display device comprising: a signal line to which a data signal is configured to be supplied in a scanning period and an alternating-current driving signal having a lower frequency than the data signal is configured to be supplied in a break period which follows the scanning period and is longer than the scanning period; a scan line to which a selection signal is configured to be supplied in one horizontal scanning period included in the scanning period and a non-selection signal is configured to be supplied in periods other than the one horizontal scanning period; and a transistor comprising an In—Ga—Zn—O-based oxide semiconductor layer, and having a gate electrically connected to the scan line and one of a source and a drain electrically connected to the signal line, wherein an off-state current of the transistor comprising the In—Ga—Zn—O-based oxide semiconductor layer is smaller than an off-state current of a transistor comprising an amorphous silicon.