公开(公告)号：US20240371318A1

公开(公告)日：2024-11-07

申请号：US18580899

申请日：2021-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Dohoon KIM ,  Jinhaeng JANG ,  Kanghyun YOON

IPC: G09G3/3208 ,  G09G3/36 ,  H02H7/125 ,  H02M7/217

Abstract: An image display apparatus is disclosed. The image display apparatus according to an embodiment of the present disclosure includes: a display; and a power supply to supply a driving voltage to the display, wherein the power supply includes: an AC/DC converter comprising at least one switching device and configured to convert an input AC voltage into a DC voltage and output the DC voltage to a dc link; a dc link capacitor disposed at the dc link; an input voltage detector to detect the input AC voltage; a dc link voltage detector to detect a dc link voltage; and a controller to control the AC/DC converter, wherein in response to the detected input AC voltage exceeding a first reference value and the detected dc link voltage being lower than or equal to a second reference value lower than the first reference value, the controller is configured to turn off the switching device in the AC/DC converter. Accordingly, burnout of the dc link capacitor may be prevented.

公开(公告)号：US20250142750A1

公开(公告)日：2025-05-01

申请号：US18692728

申请日：2021-09-16

Applicant: LG ELECTRONICS INC.

Inventor： Kyeungsoo JEONG ,  Jinhaeng JANG

IPC: H05K5/02 ,  H01F27/24 ,  H01F27/28 ,  H01F27/30

Abstract: Disclosed is a display device. The display device may include: a display panel; a frame which is located in a rear of the display panel, and to which the display panel is coupled; a back cover covering a rear of the frame; a power supply board which is located between the frame and the back cover, and which is coupled to the frame; and a line filter which is located between the power supply board and the back cover, and which is coupled to the power supply board, wherein the line filter may include: an inductor; and a core which shields at least two side surfaces of the inductor.

公开(公告)号：US20230005414A1

公开(公告)日：2023-01-05

申请号：US17757447

申请日：2019-12-19

Applicant: LG ELECTRONICS INC.

Inventor： Dohoon KIM ,  Jinhaeng JANG ,  Seunghun JANG

IPC: G09G3/20 ,  G09G3/3233

Abstract: A display device comprises: a display module including a display panel; a control board for controlling the display module; and a power board for outputting direct current voltage to the display module. The power board changes the pulse frequency of a control signal so as to output direct current voltage adjusted according to changes in the load of the display panel.