Patent ID: 9301357
Filing Date: 2016-03-29
CPC Classification: G09G,H05B

Claim Text:
1. A backlight unit comprising: a plurality of light source units which emits light; and a plurality of light source driving integrated circuits which controls a brightness of the light source units, respectively, wherein each of the light source driving integrated circuits comprises: wherein the second current has a current value substantially the same as the current value of the first current, wherein the current generator comprises: a current mirror unit which includes a current mirror and generates the first current and the second current; and a variable resistor which has a resistance value controlled by the current level controller and controls the current value of the first current, and wherein the current level controller controls the resistance value of the variable resistor in response to the duty ratio information of the pulse width modulation signal, and the resistance value of the variable resistor is substantially inversely proportional to the duty ratio of the pulse width modulation signal.