Patent ID: 9529561
Filing Date: 2016-12-27
CPC Classification: G06F,G09G

Claim Text:
1. A display device, comprising: a display panel; a backlight unit configured to supply light to the display panel; and a luminance comparison unit configured to compare a measured luminance of the display panel with a reference luminance range, wherein the backlight unit includes: a light source unit; a DC-DC converter directly connected to a first port of the light source unit and not directly connected to a second port of the light source unit, and configured to supply a driving voltage to the light source unit through the first port; and a driving current controller connected to the second port of the light source unit, and configured to control a driving current flowing to the second port of the light source unit based on the comparison result of the luminance comparison unit, wherein the driving current controller includes: a plurality of resistors connected to a reference voltage terminal of an integrated circuit (IC) chip; and a plurality of coupling members connected to the plurality of resistors, respectively, and to an output current terminal of the IC chip, wherein the plurality of coupling members is configured to control connection states of the resistors.