公开(公告)号：US20200320940A1

公开(公告)日：2020-10-08

申请号：US16714510

申请日：2019-12-13

Applicant: LG ELECTRONICS INC.

Inventor： Myongyoung LEE ,  Jongmin LEE ,  Taeha UM ,  Yeonoh NAM

IPC: G09G3/34 ,  G02F1/1335

Abstract: The present invention relates to a liquid crystal display device that provides improved local dimming. The liquid crystal display device includes: a liquid crystal display panel; a backlight unit divided and driven into a plurality of blocks and supplying light to the liquid crystal display panel; a local dimming value calculator calculating a dimming value of each of the blocks in accordance with input image data; and a backlight dimming controller having a pixel corrector correcting image data on the basis of the dimming values, in which the backlight dimming controller can correct at least some of the dimming values of the blocks calculated by the local dimming value calculator.

公开(公告)号：US20220246073A1

公开(公告)日：2022-08-04

申请号：US17236670

申请日：2021-04-21

Applicant: LG ELECTRONICS INC.

Inventor： Taeha UM ,  Hyunchul NOH ,  Seongyeol AHN ,  Sangjun KIM

IPC: G09G3/20 ,  H04N19/132

Abstract: A display device includes a display unit, an external device interface unit configured to receive video having a second frequency from a set-top box converting an original video having a first frequency into the video having the second frequency, and a control unit configured to: determine whether an abnormal output state is detected, based on the video having the second frequency; when the abnormal output state is detected, determine the number of interpolation frames to be generated so as to output the original video having the first frequency as final video having a third frequency through the display unit; and generate interpolation frames as many as the determined number of interpolation frames.