公开(公告)号：US11094280B2

公开(公告)日：2021-08-17

申请号：US16930951

申请日：2020-07-16

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Juno Hur ,  Dong Ju Kim ,  Soon Dong Cho

IPC: G09G3/36

Abstract: The present disclosure relates to a level shifter and a display device using the same, and the level shifter includes a first transistor configured to increase a voltage of an output signal, a second transistor configured to lower a voltage of the output signal, a first driver configured to vary a gate voltage of the first transistor in response to a first Vgs signal being varied within a transition time of the output signal, and a second driver configured to vary a gate voltage of the second transistor in response to a second Vgs signal being varied within a transition time of the output signal.

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：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.

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：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：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.

公开(公告)号：US20240221600A1

公开(公告)日：2024-07-04

申请号：US18528481

申请日：2023-12-04

Applicant: LG Display Co., Ltd.

Inventor： Jae Won Han ,  Soon Dong Cho ,  Min Gyu Park ,  Sun Young Kim ,  Se Dong Park

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G3/3648 ,  G09G2300/0842 ,  G09G2310/0289 ,  G09G2310/0291 ,  G09G2310/08

Abstract: Embodiments disclose a level shifter including a logic unit configured to receive timing data and channel data and output an edge signal and a channel signal at a time point defined in the timing data, and a channel selection unit configured to select at least one channel from among a plurality of connected channels according to the channel signal and transmit the edge signal, and a display device including the same.

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.