Patent ID: 6980191

Claim:
A display apparatus comprising: signal lines and scanning lines arranged laterally and longitudinally on an insulating substrate; display elements formed near respective points of intersection of said signal lines and said scanning lines; a signal line driving circuit, which is formed on said insulating substrate, configured to drive the signal lines; a scanning line driving circuit, which is formed on the insulating substrate, configured to drive the scanning lines; a graphic controller IC configured to output digital pixel data in order according to an order of driving the signal lines by said signal line driving circuit, wherein said graphic controller IC outputs a first clock signal in a cycle twice as much as that of the digital pixel data, the signal line driving circuit and said scanning line driving circuit drive the signal lines and the scanning lines synchronously with the first clock signal, respectively, the graphic controller IC has a pixel data output circuit configured to output the digital pixel data, and said pixel data output circuit outputs an intermediate-level voltage between a high-level voltage and a low-level voltage of the digital pixel data for a period during which a valid digital pixel data is not outputted.