公开(公告)号：US12272300B2

公开(公告)日：2025-04-08

申请号：US18507892

申请日：2023-11-13

Applicant: LG Display Co., Ltd.

Inventor： HyunKyo Lim ,  Dongsup Sim

IPC: G09G3/3275 ,  G09G3/32

Abstract: A display device can operate in a first mode for displaying at least a first image including first frames based on a first driving frequency, or in a second mode for displaying a second image including second frames based on a second driving frequency different from the first driving frequency. Further, when the first image displayed on the display panel operating in the first mode is changed to a third image, at least one frame among third frames running after the first image has been displayed among the plurality of frames displaying the third image operates at the second driving frequency based on the second mode. Also, in the first mode, the second image includes reset frames for periodically resetting a voltage of an anode electrode between refresh frames for supplying at least one data signal to at least one of the plurality of pixels for a preset time.

公开(公告)号：US12148386B2

公开(公告)日：2024-11-19

申请号：US18525426

申请日：2023-11-30

Applicant: LG Display Co., Ltd.

Inventor： Byeongchul Kim ,  Dongsup Sim

IPC: G09G3/20 ,  G09G3/3233

Abstract: A display device in one example includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, where each of the first sub-pixel, the second sub-pixel, and the third sub-pixel includes a driving transistor, a first transistor, and a second transistor. The driving transistor includes a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, and provides a driving current to a light emitting diode. The first transistor includes a first electrode receiving a bias voltage, a second electrode connected to the second node, and a gate electrode to which a third scan signal is applied. The second transistor includes a first electrode connected to the third node, a second electrode connected to an anode of the light emitting diode, and a gate electrode to which an emission control signal is applied.

公开(公告)号：US12175935B2

公开(公告)日：2024-12-24

申请号：US18399209

申请日：2023-12-28

Applicant: LG Display Co., Ltd.

Inventor： Hyunkyo Lim ,  Dongsup Sim

IPC: G09G3/3233 ,  G09G3/00

Abstract: A display apparatus includes a pixel row including a plurality of pixels. Each pixel includes a driving transistor that provides a driving current to a light emitting element, and includes a gate electrode, a first electrode, and a second electrode. The first transistor includes a gate electrode that receives a first scan signal, a first electrode receives a data voltage, and a second electrode. The second transistor includes a gate electrode that receives a second scan signal, a first electrode that receives an initialization voltage, and a second electrode. A ripple detection unit detects ripples that occur in pixel rows in the display apparatus. A compensation image data calculation unit calculates the magnitude of the compensation image data based on the difference between the voltage level of the initialization voltage of a pixel row in which the ripple occurs and a reference initialization voltage level.

公开(公告)号：US20240257736A1

公开(公告)日：2024-08-01

申请号：US18399209

申请日：2023-12-28

Applicant: LG Display Co., Ltd.

Inventor： Hyunkyo Lim ,  Dongsup Sim

IPC: G09G3/3233 ,  G09G3/00

CPC classification number: G09G3/3233 ,  G09G3/006 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0204 ,  G09G2320/0233 ,  G09G2330/12 ,  G09G2340/0435

Abstract: A display apparatus includes a pixel row including a plurality of pixels. Each pixel includes a driving transistor that provides a driving current to a light emitting element, and includes a gate electrode, a first electrode, and a second electrode. The first transistor includes a gate electrode that receives a first scan signal, a first electrode receives a data voltage, and a second electrode. The second transistor includes a gate electrode that receives a second scan signal, a first electrode that receives an initialization voltage, and a second electrode. A ripple detection unit detects ripples that occur in pixel rows in the display apparatus. A compensation image data calculation unit calculates the magnitude of the compensation image data based on the difference between the voltage level of the initialization voltage of a pixel row in which the ripple occurs and a reference initialization voltage level.

公开(公告)号：US11967280B2

公开(公告)日：2024-04-23

申请号：US18068927

申请日：2022-12-20

Applicant: LG Display Co., Ltd.

Inventor： Hyunkyo Lim ,  Dongsup Sim

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/0626

Abstract: A display device includes a display panel including a plurality of pixels connected to a data line and a gate line; a data driver configured to apply a data voltage to the data line for an active period and to apply a parking voltage to the data line for a blank period for which the data voltage is not applied; a gate driver for applying a scan signal to the gate line; a light-emission signal generator for applying a light-emission signal to the plurality of pixels; and a controller configured to operate the display device based on a plurality of bands, wherein the plurality of bands have different highest target luminance levels based on operating environments of the display device, wherein in at least one of the plurality of bands, a duty ratio of the light-emission signal is smaller than a duty ratio of the parking voltage. Thus, parking voltage mura is reduced and uniformity of the display panel is improved to improve image quality.