公开(公告)号：US20250140167A1

公开(公告)日：2025-05-01

申请号：US18766087

申请日：2024-07-08

Applicant: LG ELECTRONICS INC.

Inventor： Sunghyun YANG ,  Daejoong KIM ,  Jaewoon LEE ,  Jaehoon JEONG ,  Heeyoung LEE ,  Dongsu KIM ,  Chansic PARK

IPC: G09G3/32

Abstract: The image display apparatus and a video wall including the same according to an embodiment of the present disclosure includes: a panel including a plurality of light emitting diodes; a scan driver to output a scan signal; a data driver to output a data signal; and a controller to control the data driver, and the data driver includes a plurality of data driving integrated circuits, and the data driving integrated circuit includes a current source, a switch disposed between the current source and the light emitting diode, and a coupling compensator to output a compensation signal for compensating coupling noise caused based on turn-on or turn-off of the switch. Accordingly, luminance uniformity between the plurality of light emitting diodes may be maintained.

公开(公告)号：US20240204700A1

公开(公告)日：2024-06-20

申请号：US18485818

申请日：2023-10-12

Applicant: LG Electronics Inc.

Inventor： Bohwan SEO ,  Daejoong KIM ,  Daihyun KIM

IPC: H02P3/22 ,  D06F33/46 ,  D06F33/47 ,  D06F34/08 ,  D06F39/30 ,  H02K11/33 ,  H02M1/00 ,  H02P27/08 ,  D06F103/46

CPC classification number: H02P3/22 ,  D06F33/46 ,  D06F33/47 ,  D06F34/08 ,  D06F39/30 ,  H02K11/33 ,  H02M1/0009 ,  H02P27/085 ,  D06F2103/46 ,  H02P2201/13

Abstract: A motor driving device includes a direct current (DC) link capacitor configured to store DC power, and an inverter configured to convert the DC power stored in the DC link capacitor into AC power and supply the AC power to a motor. The motor driving device includes a shunt resistor configured to sense current flowing through the inverter and detect whether the current has reached threshold current for controlling a regenerative voltage during a braking operation. A control unit is configured to control an operation of the inverter and perform a regenerative operation when the braking operation is started. The control unit, during the regenerative operation, switches motive power of a drum connected to the motor into regenerative energy and transmit the regenerative energy to the DC link capacitor, by controlling active component current and reactive component current together in response to the reaching of the threshold current.

公开(公告)号：US20250140168A1

公开(公告)日：2025-05-01

申请号：US18769035

申请日：2024-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Sunghyun YANG ,  Daejoong KIM ,  Jaewoon LEE ,  Jaehoon JEONG ,  Heeyoung LEE ,  Dongsu KIM ,  Chansic PARK

IPC: G09G3/32

Abstract: The present disclosure relates to an image display apparatus and a video wall including the same. An image display apparatus according to an embodiment of the present disclosure includes: a panel including a plurality of light emitting diodes; and a driving controller configured to output a scan signal for each of a plurality of subframe periods, and output a data signal for displaying an image, to the plurality of light emitting diodes, and the driving controller is configured to divide at least some subframe periods among the plurality of subframe periods into a plurality of group periods, and separately drive the light emitting diodes during at least some periods among the plurality of group periods. Accordingly, luminance non-uniformity between a plurality of light emitting diodes may be reduced.

公开(公告)号：US20220263428A1

公开(公告)日：2022-08-18

申请号：US17625620

申请日：2020-07-07

Applicant: LG Electronics Inc.

Inventor： Daejoong KIM ,  Daihyun KIM ,  Seungwook HYUN

IPC: H02M7/48 ,  H02M3/335 ,  H02M1/12 ,  H02J3/38 ,  H02M7/5387

Abstract: The present disclosure relates to a power converting apparatus and a photovoltaic module including the same. The power converting apparatus according to an embodiment of the present disclosure includes: an inverter configured to convert input DC power into AC power by a switching operation; an output voltage detector configured to detect an output voltage of the inverter; and a controller configured to control the inverter, wherein the controller is configured to perform proportional resonant control based on the output voltage, and output a switching control signal to the inverter based on the proportional resonant control. Accordingly, it is possible to remove harmonics generated due to connection of a nonlinear load.