公开(公告)号：US09754523B2

公开(公告)日：2017-09-05

申请号：US14698119

申请日：2015-04-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yoon-Young Lee ,  Kwang-Hun Kang ,  Soon-Gi Kwon ,  Sung-Chun Park ,  Jeong-Min Seo

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2330/028

Abstract: A power supply device includes a voltage range selector, a voltage level controller, and a power supply voltage generator. The voltage range selector generates a range selection signal to select a voltage control range. The voltage level controller generates a voltage level control signal based on a driving condition of a display panel. The power supply voltage generator generates a power supply voltage having a voltage level corresponding to the voltage level control signal within the voltage control range, and supplies the power supply voltage to the display panel.