公开(公告)号：US20250046232A1

公开(公告)日：2025-02-06

申请号：US18709190

申请日：2022-11-11

Applicant: LG ELECTRONICS INC.

Inventor： Myoungsuk CHAE ,  Jongmyeong LIM ,  Byungchang CHA ,  Geunyong KIM ,  Younggu CHUNG ,  Sungjin KANG ,  Sangkyu KANG ,  Haktae KIM ,  Kyuheon LEE ,  Seungho RYOO ,  Sangtae PARK ,  Jonggon SHIN

IPC: G09G3/32 ,  G01J3/50 ,  G06T7/90 ,  G09G3/00 ,  H01L25/16

Abstract: A method for calibrating a LED display device, according to one embodiment of the present invention, comprises the steps of: providing one module composed of a plurality of pixels; providing a cabinet composed of a plurality of modules; providing an LED display device composed of a plurality of cabinets; and calibrating by cell unit, which is larger than the size of the pixel and is smaller than the size of one module.

公开(公告)号：US20210390915A1

公开(公告)日：2021-12-16

申请号：US17288465

申请日：2018-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Sangjoon PARK ,  Wonsik KIM ,  Sungjin KANG ,  Heeyoung LIM ,  Byungchang CHA ,  Geunyong KIM ,  Myungdeok BAE

IPC: G09G3/34 ,  G09G5/10 ,  G09G3/32

Abstract: Disclosed herein are a digital signage system for limiting a luminance range settable by a user according to the number of power supply units (PSUs) and a method of operating the same. The digital signage system includes a panel configured to display an image, a plurality of light emitting diode (LED) driver modules configured to provide to the panel, a display device including at least one power supply unit configured to supply power to the panel and the plurality of LED driver modules, and a system controller configured to control the display device. The system controller includes a display configured to display a luminance setting screen for controlling luminance of the image and a controller configured to change a settable maximum luminance value according to the number of power supply units when the luminance setting screen is displayed.