Patent ID: 9679527
Date: 2017-06-13
CPC Classifications: G09G

Claim:
1. A display device comprising: a display panel comprising data lines, scan lines and a plurality of pixels coupled to the data lines and the scan lines; a data driver configured to supply data voltages to the data lines based on digital video data; a scan driver configured to supply scan signals to the scan lines; a timing controller configured to select one of a normal mode and a self-refresh mode based on a panel self-refresh enable signal, wherein the data driver and the scan driver are driven by a first frame frequency in the normal mode, and the data driver and the scan driver are driven by a second frame frequency, which is lower than the first frame frequency, in the self-refresh mode; and a power supply source configured to supply driving voltages to the data driver, the scan driver and the timing controller and to transmit a direct current power voltage to an outside thereof, wherein the timing controller generates a power voltage supply control signal based on the panel self-refresh enable signal and supplies the power voltage supply control signal to the power supply source, wherein the power voltage supply control signal has a first logic level voltage in the normal mode and a second logic level voltage different from the first logic level voltage in the self-refresh mode, the power supply source transmits the direct current power voltage in response to the power supply control signal having the first logic level voltage, and a transmission of the direct current power voltage from the power supply source is blocked in response to the power supply control signal having the second logic level voltage during a blank period of a frame period.