公开(公告)号：US11315522B2

公开(公告)日：2022-04-26

申请号：US16728742

申请日：2019-12-27

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyung Lee ,  Kangsoo Kim ,  Jiwoong Cho

IPC: G09G3/32 ,  G09G5/10 ,  G09G3/3233

Abstract: Disclosed is an image display apparatus. The image display apparatus includes: a display; an illumination sensor configured to sense ambient illumination of the display; and a signal processing unit configured to output an image-quality-processed image signal to the display, wherein the signal processing unit is configured to, based on information on the illumination sensed by the illumination sensor, convert gray level of an input image according to a first gray level conversion mode or according to a second gray level conversion mode in which an amount of increase in gray level is greater than in the first gray level conversion mode. Accordingly, it is possible to improve gray level expression of a displayed image in response to ambient illumination of the display.