Patent ID: 9269326
Filing Date: 2016-02-23
CPC Classification: G09G

Claim Text:
1. A voltage compensation circuit of a display device, the display device comprising a direct-current voltage converter, a voltage level shifter and a gate driving circuit disposed on a panel of the display device, the voltage compensation circuit comprising: a voltage divider, coupled to the gate driving circuit and providing a divided voltage; a comparing unit, coupled to the voltage divider and receiving the divided voltage and a first predetermined reference voltage and a second predetermined reference voltage to provide at least one comparison result, wherein the comparing unit comprises: a time counting unit, coupled to the voltage divider and providing a plurality of timing control signals at different time points according to the divided voltage; and a processing unit, coupled to the comparing unit and the time counting unit, and providing a voltage reference signal to the direct-current voltage converter according to the plurality of timing control signals and the comparison result, and accordingly, the direct-current voltage converter adjusting an output voltage relating to the gate driving circuit.