Patent ID: 8085231

Claim:
A display device comprising: a display panel including a plurality of pixels; a plurality of drive circuits for supplying video voltages to the respective pixels; and a display control circuit which performs a drive control of the plurality of drive circuits, wherein the display panel includes a first substrate, the plurality of drive circuits and the display control circuit are mounted on a peripheral portion of one long side of the first substrate, a printed circuit board is connected to one long side of the first substrate, each drive circuit includes a group of power source voltage input terminals to which a power source voltage is supplied, a group of gray-scale reference voltage input terminals to which a gray-scale reference voltage is supplied, and a group of gray-scale reference voltage output terminals which sends a gray-scale reference voltage on a surface thereof facing the first substrate, the group of power source voltage input terminals, the group of gray-scale reference voltage input terminals, and the group of gray-scale reference voltage output terminals are arranged along a printed-circuit-board-side long side of each drive circuit, the group of power source voltage input terminals is arranged between the group of gray-scale reference voltage input terminals and the group of gray-scale reference voltage output terminals, the group of gray-scale reference voltage input terminals is arranged on a display-control-circuit-side of the group of power source voltage input terminals, the group of gray-scale reference voltage output terminals is arranged on a side of the group of power source voltage input terminals opposite to the display control circuit, a power source voltage is supplied to the group of power source voltage input terminals of each drive circuit via the printed circuit board, a gray-scale reference voltage is supplied to the group of gray-scale reference voltage input terminals of the start drive circuit via the printed circuit board, and a gray-scale reference voltage which is sent from the group of gray-scale reference voltage output terminals of the drive circuit of a preceding stage is supplied to the drive circuits other than the start drive circuit.