公开(公告)号：US12154522B2

公开(公告)日：2024-11-26

申请号：US18254784

申请日：2020-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Jongmin Lee ,  Sunwoo Jung ,  Myongyoung Lee ,  Kyuyong Chung ,  Wonki Lee ,  Seokpan Kang

IPC: G09G3/34

Abstract: The present disclosure relates to an image display apparatus. The image display apparatus according to an embodiment of the present disclosure includes a display panel; a plurality of light sources configured to output light to the display panel; a plurality of switching elements configured to switch the light sources, respectively; and a processor configured to output a switching control signal having variable amplitude to the switching element, wherein the processor controls a driving frequency of the light source to be a second frequency higher than a first frequency corresponding to a vertical synchronization signal of the panel. Thus, the sharpness of the image can be improved.

公开(公告)号：US11984087B2

公开(公告)日：2024-05-14

申请号：US16918846

申请日：2020-07-01

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Kyuyong Chung ,  Jongmin Lee

IPC: G09G3/34

CPC classification number: G09G3/3426 ,  G09G2320/064

Abstract: Provided are a display device and an operating method thereof. The display device includes a liquid crystal display panel, a backlight unit including a plurality of light sources for supplying light to the liquid crystal display panel and driven in a state of being divided into a plurality of blocks corresponding to the number of the light sources, and a backlight dimming controller configured to calculate dimming values of the plurality of blocks. The backlight dimming controller is configured to divide each of the plurality of blocks into a plurality of unit blocks and control brightness of an output image differently for each of the unit blocks.

公开(公告)号：US11176877B2

公开(公告)日：2021-11-16

申请号：US17005902

申请日：2020-08-28

Applicant: LG ELECTRONICS INC.

Inventor： Jongmin Lee ,  Myongyoung Lee ,  Kyuyong Chung ,  Sangchul Nam ,  Seokpan Kang

IPC: G09G3/3208 ,  G09G5/10

Abstract: An image display apparatus is disclosed. The image display apparatus includes a panel configured to display an image, a backlight including a plurality of light sources configured to output light to the panel, a light source driver configured to drive the plurality of light sources, and a processor configured to control the light source driver, wherein the processor changes the turn on duty of a light source corresponding to a moving object area in an input image and changes the level of current flowing in the light source. Consequently, the definition and luminance of an image including a moving object may be improved.