公开(公告)号：US11062651B2

公开(公告)日：2021-07-13

申请号：US16688048

申请日：2019-11-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Nakyoon Kim ,  Jisu Kim

IPC: G09G3/3233 ,  G09G3/3291 ,  H02M3/04 ,  H02J7/00

Abstract: A display device can include a display unit including data lines, gate lines crossing the data lines and pixels; a voltage generating unit configured to generate driving voltages for driving the display unit based on a voltage from a battery; and a data driver configured to convert input image data into data voltages and output the data voltages to the data lines, wherein the voltage generating unit includes a battery current control unit configured to control a magnitude of a low potential driving voltage applied to cathode electrodes of the pixels according to an amount of a battery output current flowing from the battery to the voltage generating unit, and wherein the battery current control unit is configured to increase the low potential driving voltage when the battery output current is equal to or greater than a predetermined threshold value.