公开(公告)号：US10152925B2

公开(公告)日：2018-12-11

申请号：US14850773

申请日：2015-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon Im ,  Min-Soo Choi ,  Min-Gyu Kim ,  Youngsup Kwon ,  Eun Chul Shin ,  Dae-Sik Lee

IPC: G09G3/34 ,  G09G3/00

Abstract: A backlight unit includes a light source part including a light-emitting diode array, a DC/DC converter, a driving current controller, and a reference voltage variable part. The backlight unit is operated in a first mode or a second mode. The driving current controller controls a driving current flowing through the light-emitting diode array to have a first current level during the first mode and controls the driving current flowing through the light-emitting diode array to have a second current level during the second mode. The reference voltage variable part applies a first reference voltage to the driving current controller during the first mode and applies a second reference voltage to the driving current controller during the second mode.