公开(公告)号：US11482178B2

公开(公告)日：2022-10-25

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.

公开(公告)号：US11315492B2

公开(公告)日：2022-04-26

申请号：US17060729

申请日：2020-10-01

Applicant: LG DISPLAY CO., LTD.

Inventor： SoekMin Choi ,  NakJin Seong ,  MooKyoung Hong

IPC: G09G3/3258

Abstract: The present disclosure relates to display devices and methods of driving the display devices. In accordance with embodiments of the present disclosure, it is possible to improve image quality of a display device by reducing a sensing time for sensing one or more characteristic values of at least one driving transistor disposed in at least one sub-pixel. Further, it is possible to perform optimal sensing and compensation for at least one driving transistor by setting a minimum sensing time for one or more characteristic values of the at least one driving transistor and changing the sensing time according to a sensing available time of the display device.

公开(公告)号：US12236852B2

公开(公告)日：2025-02-25

申请号：US18450889

申请日：2023-08-16

Applicant: LG Display Co., Ltd.

Inventor： Uitaek Jeong ,  MooKyoung Hong

IPC: G09G3/32

Abstract: A light emitting display apparatus includes 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：US11929038B2

公开(公告)日：2024-03-12

申请号：US17864802

申请日：2022-07-14

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/00 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A display device includes a display panel, a data driving circuit, and a timing controller, wherein the display panel includes a plurality of gate lines to which a scan signal is applied, a plurality of data lines to which a data voltage is applied, a plurality of reference voltage lines to which a reference voltage is applied, and a plurality of subpixels, wherein the data driving circuit senses a voltage on one reference voltage line selected from the plurality of reference voltage lines in a first detecting period and a second detecting period having different voltage detecting paths, and wherein the timing controller controls the data driving circuit, and determining whether or not the reference voltage line is abnormal using a sensing voltage detected from the reference voltage line.

公开(公告)号：US20220415266A1

公开(公告)日：2022-12-29

申请号：US17895958

申请日：2022-08-25

Applicant: LG Display Co., Ltd.

Inventor： Jinhee Jung ,  MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/3233

Abstract: Two or more sensing switches are included in a sensing unit for detecting a characteristic value of a subpixel, and are electrically coupled to a reference voltage line. The two or more sensing switches share a sampling switch with a sensing capacitor included in the sensing unit, which reduces size of the sensing unit. Sensing may include driving simultaneously two or more sensing switches sharing a sensing capacitor, or sensing may be performed through continuous and short driving after simultaneous driving. Overall sensing time can be reduced and sensing accuracy improved.

公开(公告)号：US11508279B2

公开(公告)日：2022-11-22

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：US20220208108A1

公开(公告)日：2022-06-30

申请号：US17549552

申请日：2021-12-13

Applicant: LG Display Co., Ltd.

Inventor： HaeSeung Lee ,  MooKyoung Hong

IPC: G09G3/3266

Abstract: A display device is provided that includes a display panel including one or more sub-pixels and a gate driving circuit supplying a gate signal to the sub-pixels through gate lines, the gate driving circuit including a gate output buffer circuit including a pull-up transistor that controls a connection between a clock input node and a gate output node, and a pull-down transistor that controls a connection between a low level voltage node and the gate output node, a control circuit capable of controlling the gate output buffer circuit, and a dummy pull-down transistor whose a gate node is shared with a gate node of the pull-down transistor.

公开(公告)号：US20220157257A1

公开(公告)日：2022-05-19

申请号：US17364669

申请日：2021-06-30

Applicant: LG Display Co., Ltd.

Inventor： Juwon KIM ,  MooKyoung Hong

IPC: G09G3/3275

Abstract: The present disclosure relates to display devices, controllers, and display driving methods, and more specifically, to a display device, a controller, and a display driving method capable of selectively overdriving only a pattern of an image or sub-pixel regarded as a more likely lack of charge. Through this, there is provided an effect of preventing excessive compensation due to unnecessary overdriving.

公开(公告)号：US10522085B2

公开(公告)日：2019-12-31

申请号：US15657456

申请日：2017-07-24

Applicant: LG Display Co., Ltd.

Inventor： Uitaek Jeong ,  MooKyoung Hong

IPC: G09G3/3258 ,  G09G3/36 ,  G09G3/20 ,  G09G3/28 ,  G09G3/34

Abstract: An organic light-emitting display device includes: a display panel including: a plurality of pixels configured to display an image, each pixel among the plurality of pixels including a driving transistor and a sensing transistor, a plurality of data lines respectively connected to each driving transistor, and a plurality of sensing signal lines respectively connected to each sensing transistor, a plurality of source drive integrated circuits (ICs) configured to: supply data voltages to the plurality of data lines, and supply sensing voltages to the plurality of sensing signal lines, and a timing controller configured to supply digital video data and a data timing control signal to the source driver ICs, wherein each of the plurality of source driver ICs includes a sensing voltage supply unit configured to generate the sensing voltages.

公开(公告)号：US20240212572A1

公开(公告)日：2024-06-27

申请号：US18485715

申请日：2023-10-12

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong ,  Jinsol Choi

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/3685 ,  G09G2300/0842 ,  G09G2330/028 ,  G09G2330/12 ,  G09G2370/10

Abstract: Disclosed is a display apparatus comprising a display panel with a plurality of data lines, a plurality of reference lines, and a plurality of subpixels arranged therein, a data driver configured to supply a data voltage to the data lines and to supply a reference voltage to the reference lines, a power supplier configured to supply a plurality of driving voltages to the data driver, and a timing controller configured to control the data driver and the power supplier and to supply a common voltage that changes between a plurality of different voltage levels that correspond to the plurality of driving voltages.