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：US11657763B2

公开(公告)日：2023-05-23

申请号：US17491346

申请日：2021-09-30

Applicant: LG Display Co., Ltd.

Inventor： Dong Ju Kim ,  Soon Dong Cho ,  Jun O Hur ,  Dong Won Park ,  Won Yong Jang

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/36

CPC classification number: G09G3/3266 ,  G09G3/3674 ,  G09G2310/0286 ,  G09G2310/0289

Abstract: A display device includes a display panel displaying an image, a scan driver configured to apply scan signals to the display panel, and a power supply configured to apply a gate high voltage and a gate low voltage to the scan driver. The scan driver discharges the display panel based on a second gate high voltage lower than the gate high voltage during a discharging operation of the display panel.

公开(公告)号：US12217681B2

公开(公告)日：2025-02-04

申请号：US18382942

申请日：2023-10-23

Applicant: LG Display Co., Ltd.

Inventor： Dong Ju Kim ,  Won Yong Jang

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display panel configured to display images, a plurality of circuit boards connected to one side of the display panel, a cable electrically connecting at least two of the plurality of circuit boards, voltage lines disposed on the cable, the plurality of circuit boards, and the display panel, a deviation compensation circuit configured to sense voltages transmitted through a circuit board on one side and a circuit board on the other side connected by the cable among the plurality of circuit boards and to output a signal based on the sensed voltages, and a variable circuit configured to compensate for a current difference between the circuit board on one side and the circuit board on the other side based on the signal output from the deviation compensation circuit.

公开(公告)号：US20220108659A1

公开(公告)日：2022-04-07

申请号：US17491346

申请日：2021-09-30

Applicant: LG Display Co., Ltd.

Inventor： Dong Ju Kim ,  Soon Dong Cho ,  Jun O Hur ,  Dong Won Park ,  Won Yong Jang

IPC: G09G3/3266 ,  G09G3/36

Abstract: A display device includes a display panel displaying an image, a scan driver configured to apply scan signals to the display panel, and a power supply configured to apply a gate high voltage and a gate low voltage to the scan driver. The scan driver discharges the display panel based on a second gate high voltage lower than the gate high voltage during a discharging operation of the display panel.

公开(公告)号：US11551598B2

公开(公告)日：2023-01-10

申请号：US17398706

申请日：2021-08-10

Applicant: LG Display Co., Ltd.

Inventor： Won Yong Jang ,  Hoon Jang ,  Soon Dong Cho

IPC: G09G3/20

Abstract: The present disclosure may provide a display apparatus including a display panel configured to display an image, a shift register configured to supply a scan signal to the display panel, a level shifter configured to output clock signals for driving the shift register, a power supply configured to supply a gate voltage to the level shifter, and a controller configured to sense a node voltage of a circuit generating the gate voltage, detect a short circuit between the clock signals based on a sensed value and an internal reference value, and control the power supply when the short circuit occurs between the clock signals.

公开(公告)号：US20220068179A1

公开(公告)日：2022-03-03

申请号：US17398706

申请日：2021-08-10

Applicant: LG Display Co., Ltd.

Inventor： Won Yong Jang ,  Hoon Jang ,  Soon Dong Cho

IPC: G09G3/20

Abstract: The present disclosure may provide a display apparatus including a display panel configured to display an image, a shift register configured to supply a scan signal to the display panel, a level shifter configured to output clock signals for driving the shift register, a power supply configured to supply a gate voltage to the level shifter, and a controller configured to sense a node voltage of a circuit generating the gate voltage, detect a short circuit between the clock signals based on a sensed value and an internal reference value, and control the power supply when the short circuit occurs between the clock signals.