Display driver, electro-optical device and drive method

A method of driving 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, by using a plurality of scan drive cells, the method comprising:

• designating a scan line address by using a scan control signal;
• comparing an address exclusively assigned to at least one of the plurality of scan drive cells with the scan line address;
• latching a comparison result based on a scan clock signal, the comparison result representing whether the scan line address coincides with the address exclusively assigned to at least one of the plurality of the scan drive cells;
• outputting a signal based on the comparison result to one of the plurality of scan drive cells in synchronization with the scan clock signal;
• and
• causing the one of the plurality of scan drive cells to drive one of the plurality of scan lines.

A display driver which drives at least a plurality of scan lines of a display panel, the display driver comprising:

• a plurality of scan drive cells each of which 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 first logic circuit, a second logic circuit, and a register,
• the first logic circuit comparing a scan line address designated by a scan control signal with an address exclusively assigned to one of the plurality of scan drive cells, and outputting a first signal, the first signal representing whether the scan line address designated by the scan control signal coincides with the address exclusively assigned to the one of the plurality of scan drive cells,
• the register latching the first signal, and outputting a second signal in synchronization with a scan clock, the second signal being based on the first signal, and
• the second logic circuit outputting a third signal to one of the plurality of scan drive cells, the third signal being based on the second signal.

A method of driving a plurality of scan lines of a display panel, the method comprising:

• comparing an address exclusively assigned to one of a plurality of scan drive cells with a scan line address designated by a scan control signal;
• generating a first signal representing whether the scan line address coincides with the address exclusively assigned to the one of the plurality of scan drive cells;
• latching the first signal and outputting a second signal in synchronization with a scan clock signal, the second signal being based on the first signal;
• outputting a third signal to the one of the plurality of the scan drive cells, the third signal being based on the second signal;
• and
• outputting a driving signal from the one of the plurality of the scan drive cells to one of the plurality of scan lines.