公开(公告)号：US20230068639A1

公开(公告)日：2023-03-02

申请号：US17865308

申请日：2022-07-14

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung HONG

IPC: G09G3/3233 ,  G09G3/3291

Abstract: A display device includes a display panel having a plurality of sensing channels connected to a plurality of subpixels to detect a driving characteristic value, a data driving circuit including an analog-to-digital converter converting a sensing voltage detected through the plurality of sensing channels into digital sensing data and converting a subpixel driving voltage detected through at least one dummy channel into digital dummy sensing data, and a timing controller calculating an intensity of a current flowing through the data driving circuit based on the digital dummy sensing data transferred from the data driving circuit and compensating for image data transferred to the data driving circuit.

公开(公告)号：US20220189368A1

公开(公告)日：2022-06-16

申请号：US17513210

申请日：2021-10-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Juwon KIM ,  MooKyoung HONG

IPC: G09G3/20

Abstract: Embodiments of the present disclosure relate to a gate driving circuit, a display device, and a method for driving a display device. It is possible to reduce deterioration of the transistor controlled by a first QB node and a second QB node by alternately driving the first QB node and the second QB node of a gate circuit. In addition, by sensing a deterioration deviation between a transistor controlled by the first QB node and a transistor controlled by the second QB node and adjusting a driving period of the first QB node and a driving period of the second QB node based on the sensing result, it is possible to maximize or at least increase the lifetime of the transistor controlled by the first QB node and the transistor controlled by the second QB node, thereby improving the reliability of the gate circuit.

公开(公告)号：US20220148518A1

公开(公告)日：2022-05-12

申请号：US17463986

申请日：2021-09-01

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung HONG

IPC: G09G3/3291

Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to reduce a compensation offset for a driving characteristic value of a display panel. In addition, according to an embodiment of the present disclosure, the number of times of detecting a dummy sensing voltage through a dummy channel is greater than the number of times of detecting a sensing voltage through a sensing channel, thereby reducing the compensation offset. Further, according to an embodiment of the present disclosure, offset noise can be reduced by accumulating a dummy sensing voltage repeatedly detected through the dummy channel.

公开(公告)号：US20190355309A1

公开(公告)日：2019-11-21

申请号：US16415596

申请日：2019-05-17

Applicant: LG Display Co., Ltd.

Inventor： Koichi MIWA ,  SeungJoon JEON ,  NakJin SEONG ,  MinHyung KANG ,  MooKyoung HONG

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device and a method of driving the same. Overlap driving of overlapping subpixels, and fake data insertion driving of inserting a fake image, different from real images, into every line of a plurality of lines, are performed, thereby improving image quality.

公开(公告)号：US20180061319A1

公开(公告)日：2018-03-01

申请号：US15682927

申请日：2017-08-22

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung HONG

IPC: G09G3/3241 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3241 ,  G09G3/20 ,  G09G3/2011 ,  G09G3/3659 ,  G09G2230/00 ,  G09G2310/0267 ,  G09G2320/0219

Abstract: A display device includes: a plurality of gate lines in a display panel, a gate driver configured to sequentially output scan signals to the plurality of gate lines, a gate pulse modulation integrated circuit configured to: receive an input of a gate high voltage used to generate the scan signals, modulate the gate high voltage, and output the modulated gate high voltage to the gate driver, and a controller configured to: output a gate clock signal to the gate driver, output a gate pulse modulation signal to the gate pulse modulation integrated circuit, count a number of times the gate pulse modulation signal is output, and output an output compensation signal to the gate pulse modulation integrated circuit when the number of times is identical to a number of the plurality of gate lines.

公开(公告)号：US20240221620A1

公开(公告)日：2024-07-04

申请号：US18450889

申请日：2023-08-16

Applicant: LG Display Co., Ltd.

Inventor： Uitaek JEONG ,  MooKyoung HONG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0275 ,  G09G2330/021

Abstract: A light emitting display apparatus including an analyzing circuit for analyzing at least one of image change amount and current change amount by analyzing input image data, and generating a driving frequency control signal according to analysis results, a control signal generator for generating driver control signals for changing a period of outputting data voltages according to the driving frequency control signal, transmitting a gate control signal of the driver control signals to a gate driver, and transmitting data control signals of the driver control signals to a data driver, and a data aligning circuit for generating image data by rearranging the input image data transmitted from the analyzing circuit according to a structure of a light emitting display panel, and outputting the image data to the data driver.

公开(公告)号：US20240221616A1

公开(公告)日：2024-07-04

申请号：US18383359

申请日：2023-10-24

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung HONG ,  SunYoung Hwang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0828 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2330/021

Abstract: A light emitting display apparatus can include a panel including a gate driver configured to output gate pulses and pixels configured to display an image; a power supply configured to supply a stage driving voltage to the gate driver and adjust a level of the stage driving voltage based on a dummy stage sensing signal received from the gate driver; and a data driver configured to supply data voltages to the pixels and generate a determination signal related to an occurrence of an abnormality in the gate driver based on a monitoring signal received from the power supply. Also, the light emitting display apparatus can further include a control driver configured to receive the determination signal from the data driver and control the power supply to adjust the level of the stage driving voltage based on a lookup table.

公开(公告)号：US20240212571A1

公开(公告)日：2024-06-27

申请号：US18381736

申请日：2023-10-19

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung HONG ,  Jinsol CHOI

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2330/12

Abstract: Disclosed is a display apparatus comprising a display panel including data lines connected to a driving transistor of each of subpixels for displaying an image, and reference lines connected to a sensing transistor of each of the subpixels, a data driver configured to supply a data voltage to the data lines and supplying a reference voltage to the reference lines, and a timing controller configured to control the data driver, sense a reference voltage deviation of each of the reference lines changed independent from a driving characteristic of a subpixel by supplying the reference voltage to the reference lines without supplying the data voltage to the data lines, and compensate for the reference voltage deviation.

公开(公告)号：US20230136391A1

公开(公告)日：2023-05-04

申请号：US17963352

申请日：2022-10-11

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung HONG ,  SinKyun PARK

IPC: G09G3/20 ,  G09G3/3225

Abstract: A display device includes a sub-pixel comprising a light emitting device and a driving transistor DRT electrically connected to a first electrode of the light emitting device and configured to drive the light emitting device, and a reference voltage line electrically connected to the sub-pixel SP and applying an initialization voltage to the first electrode of the light emitting device, wherein a voltage level of the initialization voltage is changed according to a length of a blank period, thereby improving display quality of the image at a low refresh rate in a variable refresh rate mode.

公开(公告)号：US20220208105A1

公开(公告)日：2022-06-30

申请号：US17543409

申请日：2021-12-06

Applicant: LG Display Co., Ltd.

Inventor： HaeSeung LEE ,  MooKyoung HONG

IPC: G09G3/3266

Abstract: A display device can include a display panel including a first gate line and a second gate line; and a gate driving circuit configured to output a first gate signal to the first gate line in synchronization with a first horizontal synchronization pulse, and output a second gate signal to the second gate line in synchronization with a second horizontal synchronization pulse after the first horizontal synchronization pulse, and adjust at least a portion of the first gate signal or at least a portion of the second gate signal so that an area under one pulse of the first gate signal is substantially equal to an area under one pulse of the second gate signal.