Patent ID: 8698849
Filing Date: 2014-04-15
Classification: G09G,H05B

Abstract:
1. A display device comprising: a display panel; light emitting diodes (LEDs) configured to emit light to the display panel; a driver configured to supply an operating voltage to the LEDs to drive the LEDs; a feedback unit configured to detect a level of a voltage drop of the LEDs and output a detection signal corresponding to the detected level of the voltage drop; and a first controller which is configured to control a level of the operating voltage supplied to the LEDs based on the operating voltage supplied to the LEDs and the detection signal, wherein the LEDs comprise: a first string of series-connected LEDs connected in series to a first terminal, and a second string of series-connected LEDs connected in parallel to the first string and in series to a second terminal; and wherein the feedback unit is configured to output the detection signal corresponding to a greater one of voltage levels at the first terminal and the second terminal indicative of the voltage drop across the first string or the second string, respectively, based on a current level output from the first terminal and the second terminal.