公开(公告)号：US10720113B2

公开(公告)日：2020-07-21

申请号：US16441818

申请日：2019-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Byunghyun An ,  Hyungoon Kim ,  Kanghyun Yoon ,  Gwangmi Go

IPC: G09G3/34

Abstract: An image display apparatus is disclosed. The image display apparatus includes a panel, a plurality of light sources to output light to the panel, a plurality of switching elements to switch the light sources, and a processor to control the switching elements, wherein the processor controls a current having a variable level to flow into each light source string among the light sources, based on local dimming data, thereby improving contrast in displaying images.

公开(公告)号：US20180268781A1

公开(公告)日：2018-09-20

申请号：US15926691

申请日：2018-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Jinsup Park ,  Byunghyun An ,  Kanghyun Yoon ,  Inhwan Lee

IPC: G09G5/10

Abstract: An image display apparatus is disclosed. The image display apparatus includes a display panel, an illuminance sensor to sense an ambient illuminance of the display panel, a plurality of light sources disposed in an edge region of a back surface of the display panel to output light, a plurality of switching elements to switch the light sources, and a processor to control the switching elements, wherein, when a difference in local dimming data of an input image between adjacent first and second regions is above a first reference value, the processor controls driving times of at least some of the switching elements to decrease a difference in illuminance between the first region and the second region, based on the illuminance sensed by the illuminance sensor.

公开(公告)号：US10825420B2

公开(公告)日：2020-11-03

申请号：US15926691

申请日：2018-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Jinsup Park ,  Byunghyun An ,  Kanghyun Yoon ,  Inhwan Lee

IPC: G09G5/10 ,  G09G3/34

Abstract: An image display apparatus is disclosed. The image display apparatus includes a display panel, an illuminance sensor to sense an ambient illuminance of the display panel, a plurality of light sources disposed in an edge region of a back surface of the display panel to output light, a plurality of switching elements to switch the light sources, and a processor to control the switching elements, wherein, when a difference in local dimming data of an input image between adjacent first and second regions is above a first reference value, the processor controls driving times of at least some of the switching elements to decrease a difference in illuminance between the first region and the second region, based on the illuminance sensed by the illuminance sensor.

公开(公告)号：US10366662B2

公开(公告)日：2019-07-30

申请号：US15463791

申请日：2017-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Byunghyun An ,  Hyungoon Kim ,  Kanghyun Yoon ,  Gwangmi Go

IPC: G09G3/34

Abstract: An image display apparatus is disclosed. The image display apparatus includes a panel, a plurality of light sources to output light to the panel, a plurality of switching elements to switch the light sources, and a processor to control the switching elements, wherein the processor controls a current having a variable level to flow into each light source string among the light sources, based on local dimming data, thereby improving contrast in displaying images.