Patent ID: 9165514
Filing Date: 2015-10-20
Classification: G09G,H05B

Abstract:
1. A display apparatus comprising: a display panel; and a backlight unit (BLU) which provides the display panel with backlight, wherein the BLU comprises: a converter which converts a voltage of a received power and outputs an output power, a plurality of light source modules which receives the output power from the converter, wherein each of the plurality of light source modules comprises a plurality of light emitting diode strings and a linear driver configured to maintain constant current among the plurality of light emitting diode strings, a switching unit which applies the output power from the converter to one of the plurality of light source modules, and a control unit which determines powering conditions to operate the plurality of light source modules in a specific state for the each of the plurality of light source modules, and sequentially controls the output power output from the converter based on the determined powering conditions, wherein the control unit sequentially determines next powering conditions for the each of the plurality of light source modules, by determining a powering condition for a light source module which currently receives the output power through a corresponding switching unit before the light source module which currently receives the output power is switched off and a light source module next in order to receive the output power is switched on.