公开(公告)号：US11847977B2

公开(公告)日：2023-12-19

申请号：US17874585

申请日：2022-07-27

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  Kwangmo Park

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2300/0828 ,  G09G2320/0233

Abstract: A display device may include a display panel and a driver circuit. The display panel may include subpixels, data lines, and reference voltage lines. The driver circuit may drive the data lines. A first subpixel may be connected to a first data line and a first reference voltage line. A driving time of the first subpixel may include a first initialization time in which a reference voltage is applied to the first reference voltage line and a first tracking time in which a voltage of the first reference voltage line increases from the reference voltage. During the first tracking time, a first data signal transferred to the first subpixel through the first data line may be changed from a first voltage value to a reference driving voltage value. The first voltage value may be higher than the reference driving voltage value. The display device may reduce a sensing time.

公开(公告)号：US11626072B2

公开(公告)日：2023-04-11

申请号：US17463955

申请日：2021-09-01

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong ,  Uitaek Jeong

IPC: G09G3/3291 ,  G09G3/3258 ,  G09G3/3266

Abstract: Embodiments of the present disclosure relate to a display device and driving method thereof. A display device of the present disclosure includes a display panel including a plurality of gate lines, a plurality of data lines, and a plurality of subpixels. The display device further includes a gate driving circuit for supplying scan signals to the plurality of gate lines, a data driving circuit for supplying data voltage to the plurality of data lines, and a timing controller. The timing controller is for controlling the gate driving circuit and the data driving circuit, and controlling a luminance of the plurality of subpixels according to a driving frequency of image data by detecting a variable information which is changed according to the driving frequency of the image data supplied from a host system.

公开(公告)号：US11605354B2

公开(公告)日：2023-03-14

申请号：US17518445

申请日：2021-11-03

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3275

Abstract: Embodiments of the present disclosure relate to a display device, a driving circuit and a driving method. According to an embodiment of the present disclosure, it is possible to actively control the output characteristics of data packets in a display device using a point-to-point interface. In addition, according to embodiments of the present disclosure, it is possible to actively control the output characteristics of data packets by determining a connection status or signal transmission characteristics between a timing controller and the driving circuit in a display device using a point-to-point interface.

公开(公告)号：US11568808B2

公开(公告)日：2023-01-31

申请号：US14524733

申请日：2014-10-27

Applicant: LG DISPLAY CO., LTD.

Inventor： JongSik Shim ,  MooKyoung Hong ,  Boeon Byeon

IPC: G09G3/3233

Abstract: The present invention relates to an organic light emitting display device that changes a reference voltage commonly applied to a driving transistor in all pixels, based on a characteristic value sensed according to each pixel.

公开(公告)号：US10600347B2

公开(公告)日：2020-03-24

申请号：US15684510

申请日：2017-08-23

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/00 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3283

Abstract: The present disclosure relates to an organic light emitting display device that performs sensing and compensation for a characteristic value of a subpixel, and provide the organic light emitting display device that detects whether a sensing environment has a defect via transceiving a signal between a controller and a data driver before sensing is performed in a period in which the characteristic value of the subpixel is sensed, and controls sensing of the characteristic value of the subpixel according to detection of whether the sensing environment has a defect. According to the present disclosure, an error of sensing data due to a defect in the sensing environment may be prevented and an image abnormality due to compensation performed based on erroneous sensing data may be prevented, by detecting a defect in the sensing environment and stopping sensing of the characteristic value of the subpixel when the sensing environment has a defect.

公开(公告)号：US12008968B2

公开(公告)日：2024-06-11

申请号：US17974414

申请日：2022-10-26

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/0278 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A display device includes: a display panel on which a plurality of pixels are disposed; a timing controller configured to receive Nth frame data and (N+1)th frame data and output a luminance control signal; and a power supply configured to output a reference voltage from a plurality of reference voltages each having a different level in response to the luminance control signal, in which output luminance of the plurality of pixels is determined according to the level of the reference voltage thereby maximizing an HDR effect.

公开(公告)号：US11900843B2

公开(公告)日：2024-02-13

申请号：US17842023

申请日：2022-06-16

Applicant: LG DISPLAY CO., LTD.

Inventor： Jinwon Kim ,  MooKyoung Hong

IPC: G09G3/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G09G3/2074 ,  G09G2300/0866 ,  G09G2330/028 ,  G09G2330/08 ,  G09G2330/10 ,  G09G2330/12

Abstract: A display device includes a display panel in which a plurality of subpixels including a light emitting element that emits light by a high potential voltage supplied to a driving voltage line, and a plurality of reference voltage lines connected to the plurality of subpixels to detect a characteristic value are disposed; a data driving circuit configured to supply a low potential voltage to the driving voltage line through the plurality of reference voltage lines; a base voltage switching circuit configured to control a ground voltage node connected to a cathode electrode of the light emitting element; a current detecting circuit configured to detect a current flowing between the base voltage node and a ground; and a timing controller configured to control the base voltage switching circuit and generate a defect detection signal for the driving voltage line according to a current detected by the current detecting circuit.

公开(公告)号：US20230215382A1

公开(公告)日：2023-07-06

申请号：US17977828

申请日：2022-10-31

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G3/3233 ,  G09G2310/08 ,  G09G2300/0413 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2300/0842 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2300/0819

Abstract: A display device is disclosed that includes: a display panel on which a plurality of pixels are disposed; a data driver configured to receive a sensing voltage from a reference voltage line connected to the plurality of pixels, convert the reference voltage into sensing data, and supply the data voltage to the plurality of pixels; a gate driver configured to supply a scan signal to the plurality of pixels; and a timing controller configured to output a data control signal for controlling an output timing of the data voltage and output a gate control signal for controlling an output timing of the scan signal, wherein one of the output timing of the data voltage and the output timing of the scan signal is adjusted based on the sensing data.

公开(公告)号：US11587481B2

公开(公告)日：2023-02-21

申请号：US17561390

申请日：2021-12-23

Applicant: LG Display Co., Ltd.

Inventor： SangGoo Kwon ,  MooKyoung Hong

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/20

Abstract: A display device can include a display panel having a plurality of sub pixels, each of the sub pixels including a switching transistor, a driving transistor, a sensing transistor, a storage capacitor, and a light emitting element; and a detector configured to sense a voltage difference between a first electrode of the sensing transistor and a second electrode of the sensing transistor for determining that an anode and a cathode of the light emitting element are shorted, in which a gate electrode of the switching transistor and a gate electrode of the sensing transistor are connected to a same gate line.

公开(公告)号：US11538411B2

公开(公告)日：2022-12-27

申请号：US17539864

申请日：2021-12-01

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  KwangMo Park

IPC: G09G3/3233 ,  G09G3/3208 ,  G09G3/3275 ,  G09G3/32

Abstract: A display device and a method for driving the display device are discussed, which can save costs and implement high luminance by adopting a voltage sensing scheme for accurately sensing characteristic values of the light emitting device in the subpixel for compensation while also increasing the available display area.