Patent ID: 9646555
Date: 2017-05-09
CPC Classifications: G09G

Claim:
1. A display device comprising: a display panel comprising a plurality of gate lines, a plurality of data lines crossing the plurality of gate lines, and a plurality of pixels connected to the plurality of data lines and the plurality of gate lines; a data driver configured to drive the plurality of data lines; a gate driver configured to drive the plurality of gate lines in synchronization with a vertical sync start signal; and a timing controller configured to control the data driver and the gate driver based on an image signal and a control signal inputted thereto from an outside, wherein the timing controller outputs the vertical sync start signal to the gate driver, and changes a frequency of the vertical sync start signal of a current frame when the image signal of the current frame is identical to an image signal shifted from the image signal of a previous frame in a first direction, and wherein the timing controller repeatedly changes the frequency of the vertical sync start signal between a change frequency level and a normal frequency level while it is determined that the image signal of the current frame is identical to the image signal shifted from the image signal of the previous frame in the first direction.