Patent ID: 8570269
Filing Date: 2013-10-29
Classification: G09G

Abstract:
1. A lamp driving apparatus for an LCD device, comprising: a control unit configured to output control signals and video data to control a driving of a gate driving unit and a data driving unit, and brightness control signals; the gate driving unit configured to supply scan signals to gate lines on a liquid crystal panel by controlling the control unit and the data driving unit for supplying a data voltage to data lines; the liquid crystal panel comprising: a backlight driving unit configured to: wherein the backlight unit is configured to implement a lower brightness backlight output in a dark image area by irradiating a backlight comprising a brightness corresponding to light from the lamps emitted by the backlight driving unit toward the liquid crystal panel, and turning off some of the lamps, wherein the backlight driving unit includes: wherein the turn-off lamp selection unit comprises a plurality of switching devices such that all of the lamps are turned on in response to the brightness control signals comprising a non-specific value is inputted and some of the lamps are selectively turned on when the brightness control signals comprising a specific value is inputted.