Patent ID: 7583246

Claim:
A display driver which drives at least a plurality of scan lines of a display panel having a plurality of data lines and a plurality of pixels in addition to the plurality of scan lines, the display driver comprising: a plurality of scan drive cells each of which is connected to and drives one of the plurality of scan lines; and a plurality of coincidence detection circuits each of which is connected to one of the plurality of scan drive cells, each of the plurality of coincidence detection circuits including a logic circuit for comparing a scan line address designated by a scan control signal with an address exclusively assigned to at least one of the plurality of scan drive cells, each of the plurality of coincidence detection circuits including a register which latches a comparison result of the logic circuit based on a scan clock signal, the comparison result representing whether the scan line address designated by the scan control signal coincides with the address exclusively assigned to at least the one of the plurality of scan drive cells, and each of the plurality of coincidence detection circuits outputting a signal based on the comparison result to a corresponding one of the plurality of scan drive cells in synchronization with the scan clock signal.