Patent ID: 8648884

Claim:
A display device comprising: a display panel having a plurality of pixels arranged in a matrix, wherein the matrix includes a plurality of video signal data lines and a plurality of scanning signal lines, and wherein each of the pixels is coupled to one of the video signal data lines and one of the scanning signal lines; a printed circuit board connected to the display panel; and a first drive circuit and a second drive circuit mounted on the display panel or the printed circuit board, wherein the first drive circuit is connected to a first group of the video signal data lines to provide video signals to a first group of the pixels via the first group of video signal data data lines, and wherein the second drive circuit is connected to a second group of the video signal lines, different from the first group of video signal data lines, to provide video signals to a second group of the pixels via the second group of video signal data lines, each of the first drive circuit and the second drive circuit including a gray scale voltage generating circuit generating a gray scale voltage based on a gray scale reference voltage and a reference gray scale voltage circuit generating the gray scale reference voltage, wherein the gray scale voltage generating circuit of the second drive circuit is connected to the reference gray scale voltage circuit of the first drive circuit, and each of the gray scale voltage generating circuit of the first drive circuit and the gray scale voltage generating circuit of the second drive circuit are configured to generate the gray scale voltage based on the gray scale reference voltage generated in the reference gray scale voltage circuit of the first drive circuit rather than based on the gray scale reference voltage generated in the reference gray scale voltage circuit of the second drive circuit.