公开(公告)号：US20230196955A1

公开(公告)日：2023-06-22

申请号：US17961551

申请日：2022-10-06

Applicant: LG Display Co., Ltd.

Inventor： Won Yong Jang ,  Soon Dong Cho ,  Hoon Jang ,  Jung Jae Kim ,  Dong Ju Kim

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2310/08 ,  G09G2330/028 ,  G09G2310/0286 ,  G09G2330/12

Abstract: A display apparatus includes a display panel driven based on a first gate clock and a second gate clock, a clock supply circuit including a first output terminal for an output of the first gate clock and a second output terminal for an output of the second gate clock, supplying the first output terminal with one of a gate high voltage and a gate low voltage as a first test voltage, and supplying the second output terminal with the other of the gate high voltage and the gate low voltage as a second test voltage, for a first time immediately after a system power is applied thereto, a power generator generating the gate high voltage and the gate low voltage and supplying the gate high voltage and the gate low voltage to the clock supply circuit, and an overcurrent detector receiving a flag signal to recognize overcurrent from the power generator to shut down the power generator, when the first output terminal and the second output terminal are short-circuited with each other at the first time interval.

公开(公告)号：US12266318B2

公开(公告)日：2025-04-01

申请号：US18470197

申请日：2023-09-19

Applicant: LG Display Co., Ltd.

Inventor： Jung Jae Kim ,  Dong Won Park ,  Yong Chul Kwon

IPC: G09G3/32 ,  G09G3/3291

Abstract: A power control device of a display apparatus includes a display panel configured to include a plurality of pixels, a panel driver configured to drive the display panel, a power control unit configured to output a power control signal into which one or more pieces of control command data are encoded, and a power source unit configured to shift an output level of a source voltage needed for an operation of each of the display panel and the panel driver, based on the control command data, wherein the control command data comprises a plurality of control pulses where a logic low period and a logic high period are alternated, and the logic low period is implemented with two or more different lengths.

公开(公告)号：US12094397B2

公开(公告)日：2024-09-17

申请号：US17522683

申请日：2021-11-09

Applicant: LG Display Co., Ltd.

Inventor： Yong Chul Kwon ,  Jung Jae Kim ,  Nam Kon Ko ,  Dong Won Park

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2330/025 ,  G09G2330/028

Abstract: An electroluminescence display apparatus includes a display panel including a plurality of pixels connected to a first power line, a power circuit converting a final feedback driving voltage input through a first input terminal thereof to output a high level driving voltage to a first position of the first power line through a first output terminal thereof, and a feedback control circuit receiving the high level driving voltage as a first feedback driving voltage, receiving a second feedback driving voltage from a second position of the first power line, and supplying the first input terminal of the power circuit with the final feedback driving voltage adjusted based on a first output contribution rate of the first feedback driving voltage and a second output contribution rate of the second feedback driving voltage.

公开(公告)号：US20220180800A1

公开(公告)日：2022-06-09

申请号：US17522683

申请日：2021-11-09

Applicant: LG Display Co., Ltd.

Inventor： Yong Chul Kwon ,  Jung Jae Kim ,  Nam Kon Ko ,  Dong Won Park

IPC: G09G3/32

Abstract: An electroluminescence display apparatus includes a display panel including a plurality of pixels connected to a first power line, a power circuit converting a final feedback driving voltage input through a first input terminal thereof to output a high level driving voltage to a first position of the first power line through a first output terminal thereof, and a feedback control circuit receiving the high level driving voltage as a first feedback driving voltage, receiving a second feedback driving voltage from a second position of the first power line, and supplying the first input terminal of the power circuit with the final feedback driving voltage adjusted based on a first output contribution rate of the first feedback driving voltage and a second output contribution rate of the second feedback driving voltage.

公开(公告)号：US12142205B2

公开(公告)日：2024-11-12

申请号：US17977558

申请日：2022-10-31

Applicant: LG Display Co., Ltd.

Inventor： Jung Jae Kim ,  Dong Won Park ,  Yong Chul Kwon

IPC: G09G3/3225

Abstract: A light emitting display device can include a display panel configured to display an image, a driver configured to drive the display panel, and a power supply configured to supply a high-level voltage to a first power line of the display panel. Also, the power supply includes a voltage controller configured to receive, from the driver, a vertical synchronization signal and current amount information of the high-level voltage for driving of the display panel, and boost the high-level voltage to be supplied to the display panel during a vertical blank period, based on the vertical synchronization signal and the current amount information of the high-level voltage.

公开(公告)号：US11373603B2

公开(公告)日：2022-06-28

申请号：US17357712

申请日：2021-06-24

Applicant: LG Display Co., Ltd.

Inventor： Sang Uk Lee ,  Soon Dong Cho ,  Jung Jae Kim

IPC: G09G3/3275 ,  G09G3/3233

Abstract: The present disclosure provides a light emitting display apparatus including a display panel displaying an image, a power supply supplying a driving voltage to the display panel, a data driver supplying a data voltage to the display panel, a timing controller controlling the power supply and the data driver, and a sensing circuit unit receiving a feedback component of the driving voltage as a feedback voltage and selectively sensing an electrically stabilized period in the feedback voltage based on an internal control signal of the power supply.

公开(公告)号：US20220036828A1

公开(公告)日：2022-02-03

申请号：US17357712

申请日：2021-06-24

Applicant: LG Display Co., Ltd.

Inventor： Sang Uk Lee ,  Soon Dong Cho ,  Jung Jae Kim

IPC: G09G3/3275 ,  G09G3/3233

Abstract: The present disclosure provides a light emitting display apparatus including a display panel displaying an image, a power supply supplying a driving voltage to the display panel, a data driver supplying a data voltage to the display panel, a timing controller controlling the power supply and the data driver, and a sensing circuit unit receiving a feedback component of the driving voltage as a feedback voltage and selectively sensing an electrically stabilized period in the feedback voltage based on an internal control signal of the power supply.