公开(公告)号：US20230206798A1

公开(公告)日：2023-06-29

申请号：US17980195

申请日：2022-11-03

Applicant: LG Display Co., Ltd.

Inventor： Jinwon Kim ,  MooKyoung Hong

IPC: G09G3/00 ,  G09G3/3233 ,  G09G3/3283 ,  G09G3/20

CPC classification number: G09G3/035 ,  G09G3/3233 ,  G09G3/3283 ,  G09G3/2074 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2330/021 ,  G09G2300/0408 ,  G09G3/32

Abstract: A display device is disclosed that includes a display panel on which one or more sub-pixels including a light emitting device and a driving transistor for driving the light emitting device are disposed in a display area, and whose shape is changed during a transforming period, a timing controller for receiving image data and a command signal defining the transforming period, and converting the image data to output converted image data, and a data driving circuit for receiving the converted image data and outputting a data voltage, wherein, in the transforming period, at least one sub-pixel emits light based on the image data input to the timing controller, and emits light with a luminance lower than a luminance corresponding to a grayscale of the image data. Accordingly, there may be provided a display device capable of changing a shape during an image display period.

公开(公告)号：US20230043902A1

公开(公告)日：2023-02-09

申请号：US17853874

申请日：2022-06-29

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  DongKyu Yang

IPC: H01L27/32 ,  G09G3/3291

Abstract: The present disclosure provides a display device and a driving circuit. In the display device, a first subpixel is connected to a first data line and a first reference voltage line, and includes an emitting device and a driving transistor; and a second subpixel is connected to a second data line and a second reference voltage line, and includes an emitting device and a driving transistor. The driving time of the first subpixel includes 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 and then is saturated. Sensing times for subpixels having different channel sizes are reduced.

公开(公告)号：US11450284B2

公开(公告)日：2022-09-20

申请号：US17544792

申请日：2021-12-07

Applicant: LG Display Co., Ltd.

Inventor： Jinhee Jung ,  MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/00

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：US20220189416A1

公开(公告)日：2022-06-16

申请号：US17544792

申请日：2021-12-07

Applicant: LG Display Co., Ltd.

Inventor： Jinhee Jung ,  MooKyoung Hong

IPC: G09G3/3291 ,  G09G3/00

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：US11127351B2

公开(公告)日：2021-09-21

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：US09934729B2

公开(公告)日：2018-04-03

申请号：US15657448

申请日：2017-07-24

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  SangGoo Kwon

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/325

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/325 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043 ,  G09G2330/10 ,  G09G2330/12

Abstract: An organic light-emitting display device includes: an organic light-emitting display panel including: a plurality of subpixels including: an organic light-emitting diode (OLED), a driving transistor (DT) driving the OLED including a first transistor between a first node of the DT and a data line, and a second transistor (T2) between a second node of the DT and a reference voltage line having a reference voltage (RV) applied, a sensor, and a sampling switch, wherein, during an OLED short detection period for detecting a short circuit between the first electrode and a second electrode of the OLED: the DT and the first transistor are off, when the T2 is turned off, the RV line is initialized when the RV is applied thereto, after the T2 is turned on, the sampling switch is turned on to connect the sensor and the RV line, and the sensor measures the RV line voltage.

公开(公告)号：US20180061295A1

公开(公告)日：2018-03-01

申请号：US15684510

申请日：2017-08-23

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

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

CPC classification number: G09G3/006 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0693 ,  G09G2330/08 ,  G09G2370/08

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：US12236900B2

公开(公告)日：2025-02-25

申请号：US17858835

申请日：2022-07-06

Applicant: LG Display Co., Ltd.

Inventor： MooKyoung Hong

IPC: G09G3/3291

Abstract: A display device can include a data driving circuit including k sensing terminals and a switching part including a switching element positioned between an outermost sensing terminal among the k sensing terminals and a constant voltage supply terminal, wherein k is a positive integer greater than or equal to 2; and a display panel including a plurality of subpixels and a plurality of sensing lines electrically connected with the plurality of subpixels, wherein the plurality of sensing lines are electrically connected with n sensing terminals among the k sensing terminals disposed in the data driving circuit, where n is a positive integer less than or equal to k and n is greater than or equal to 1.

公开(公告)号：US12142227B2

公开(公告)日：2024-11-12

申请号：US17364669

申请日：2021-06-30

Applicant: LG Display Co., Ltd.

Inventor： Juwon Kim ,  MooKyoung Hong

IPC: G09G3/3275 ,  G09G3/32 ,  G09G3/3266

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：US12080202B2

公开(公告)日：2024-09-03

申请号：US17865308

申请日：2022-07-14

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong

IPC: G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2330/12

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.