公开(公告)号：US20230135235A1

公开(公告)日：2023-05-04

申请号：US18045570

申请日：2022-10-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHOON LEE ,  DAE-SEOP KIM ,  CHEOLMIN KIM ,  BYUNG KI CHUN

IPC: G09G3/3275

Abstract: A display device may compensate for such changes in characteristics of light emitting elements and transistors in pixels of a display. For example, a driving circuit of a display device may update a lookup table that stores one or more compensation values. Each compensation value may correspond to a characteristic change of a pixel. In some embodiments, the characteristic change of a transistor may be determined based on a sensing signal received from a dummy pixel. Accordingly, a display device may generate a compensation signal based on an actual characteristic change of the transistor in the pixel. The compensation signal may be used by the display device to compensate for pixel characteristic changes that occur over time. For instance, a display device may use such compensation signals to correct input signals (e.g., to generate a corrected output signal) to be applied to one or more pixels of a display.

公开(公告)号：US20210350751A1

公开(公告)日：2021-11-11

申请号：US17307004

申请日：2021-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE ,  DEOKHO KANG ,  JONG WOOK KIM ,  YOUNGWOON CHOI

IPC: G09G3/3275

Abstract: A display device includes a display panel including a plurality of pixels, an image data corrector configured to generate a corrected image data by adjusting an image data and a data driver providing data signals to the plurality of pixels based on the corrected image data. The image data corrector divides the display panel into a plurality of unit areas, and adjust the image data for a unit area among the plurality of unit areas by using a full image load for the entire display panel, a first image load for the unit area, and a second image load for peripheral unit areas surrounding the unit area among the plurality of unit areas.

公开(公告)号：US20250087141A1

公开(公告)日：2025-03-13

申请号：US18957823

申请日：2024-11-24

Applicant: Samsung Display Co., LTD.

Inventor： JOON HUH ,  SANGHYUN KANG ,  SANG-MYOUNG LEE ,  JAEHOON LEE ,  JOOSUN YOON

IPC: G09G3/32

Abstract: A display device includes: a memory, a driving controller, a light emitting element, a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal, a second transistor connected between a first driving voltage line and the first electrode of the first transistor and receiving a first emission signal, and a third transistor connected between the second electrode of the first transistor and the light emitting element and receiving a second emission signal. The first emission signal includes a compensation period and an emission period, and the memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation period depending on target luminance.

公开(公告)号：US20230368732A1

公开(公告)日：2023-11-16

申请号：US18125855

申请日：2023-03-24

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE ,  TAEHYEONG AN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0413 ,  G09G2360/16 ,  G09G2310/08 ,  G09G2320/0693

Abstract: A display device is disclosed that includes a display panel which includes a pixel, a driving controller which receives an input image signal and outputs an output image signal, and a data driving circuit which provides a data signal corresponding to the output image signal to the pixel. The pixel includes a light emitting device and a first transistor electrically connected to the light emitting device. The driving controller includes an initial threshold voltage map that stores an initial threshold voltage of the first transistor, a delta threshold voltage calculator that calculates a delta threshold voltage of the first transistor over an operating time based on the initial threshold voltage, a weight calculator that calculates a weight based on the initial threshold voltage and the delta threshold voltage, and a compensator that receives the input image signal and outputs an output image signal obtained by compensating for a threshold voltage of the first transistor based on the weight.

公开(公告)号：US20230092609A1

公开(公告)日：2023-03-23

申请号：US18051394

申请日：2022-10-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHOON LEE ,  BYOUNGKWAN AN

IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/3291

Abstract: A display device includes a display panel including a plurality of pixels, a sensing circuit to measure a sensing current value of each of the pixels during a frame period, wherein the frame period includes an active period and a blank period following the active period, and a driving controller to calculate a deterioration weight based on the sensing current value and a reference current value, and to generate output image data by applying the deterioration weight to input image data.

公开(公告)号：US20220036834A1

公开(公告)日：2022-02-03

申请号：US17443606

申请日：2021-07-27

Applicant: SAMSUNG DISPLAY CO,. LTD.

Inventor： SANGMYEON HAN ,  SEUNGHO PARK ,  BYOUNGKWAN AN ,  JAEHOON LEE

IPC: G09G3/3291 ,  H01L27/32

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The display panel includes a pixel. The driving controller generates an age compensation value using a sensed age generated based on sensing data of the pixel and an accumulated age generated based on accumulated grayscale values of input image data, generates a final age based on the age compensation value, and compensates a grayscale value of the input image data based on a final age to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.