Patent ID: 7446745
Filing Date: 2008-11-04
Classification: G09G

Abstract:
1. A driver which supplies data to a data line of a display panel, the driver comprising: a driver circuit which supplies the data to an output line; a first switching element connected between the output line and a first power supply line to which a first power supply voltage is supplied; a second switching element connected between the output line and a second power supply line to which a second power supply voltage is supplied; and a switch control circuit which controls the first switching element and the second switching element, wherein: a length of a first period and a length of a second period after the first period are determined based on at least a part of display data in a second horizontal scanning period which is immediately before a first horizontal scanning period, the first period and the second period are in the first horizontal scanning period; the switch control circuit electrically connects the output line to the first power supply line in the first period by setting the first switching element in an ON state and setting the second switching element in an OFF state; the switch control circuit electrically connects the output line to the second power supply line in the second period by setting the first switching element in an OFF state and setting the second switching element in an ON state; the switch control circuit sets the first switching element and the second switching element in an OFF state after the second period; and the driver circuit drives the output line after the second period.