公开(公告)号：US20230162651A1

公开(公告)日：2023-05-25

申请号：US17990171

申请日：2022-11-18

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  SUNG-MO YANG ,  JINHO LEE

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/0275 ,  G09G2320/0271

Abstract: A display apparatus includes: a display panel; a driving controller, which receives input image data including a plurality of normal image frames and a plurality of black image frames, receives a flag indicating a type of each of frames included in the input image data, generates intermediate image data by adjusting a grayscale of the input image data based on the input image data and the flag, and generates a data signal based on the intermediate image data where the type includes a normal image frame and a black image frame; and a data driver, which generates a data voltage based on the data signal and outputs the data voltage to the display panel.

公开(公告)号：US20230162644A1

公开(公告)日：2023-05-25

申请号：US17940429

申请日：2022-09-08

Applicant: Samsung Display Co., Ltd.

Inventor： JINHO LEE ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  SEUNGHO PARK ,  KYOUNGHO LIM ,  NAMJAE LIM

IPC: G09G3/20

CPC classification number: G09G3/2044 ,  G09G2320/0247 ,  G09G2310/0278 ,  G09G2310/027 ,  G09G2340/0435

Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines, respectively; a scan driver, which provides a scan signal to the pixels through the scan lines; a data driver, which provides a data voltage to the pixels through the data lines; and a controller, which controls the scan driver and the data driver, and receives input image data at a variable input frame frequency. The controller determines whether a gray scale value of the input image data is included in any range of a first gray scale range and a second gray scale range different from the first gray scale range, and dithers the input image data when it is determined that the gray scale value of the input image data is included the first gray scale range

公开(公告)号：US20240096279A1

公开(公告)日：2024-03-21

申请号：US18213898

申请日：2023-06-26

Applicant: Samsung Display Co., Ltd.

Inventor： NAMJAE LIM ,  SEOKGYU BAN ,  SANGMYEON HAN ,  SEUNGHO PARK ,  BYOUNGKWAN AN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/10

Abstract: A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.

公开(公告)号：US20230162643A1

公开(公告)日：2023-05-25

申请号：US17879350

申请日：2022-08-02

Applicant: Samsung Display Co., Ltd.

Inventor： JINHO LEE ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  JONG WOOK KIM

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2310/027

Abstract: A display device includes a display panel and a display panel driver. The display panel includes pixels. The display panel driver determines an average image load of input image data, determines an operation mode based on a grayscale value of the input image data and the average image load as a first operation mode or a second operation mode, applies a first scale factor to the input image data in the first operation mode, applies a second scale factor different from the first scale factor to the input image data in the second operation mode, and drives the display panel.

公开(公告)号：US20230040791A1

公开(公告)日：2023-02-09

申请号：US17882612

申请日：2022-08-08

Applicant: Samsung Display Co., LTD.

Inventor： NAMJAE LIM ,  Sungjae Park ,  Seungho Park ,  Seunghwan Park ,  Jaehoon Lee ,  Jinho Lee ,  Youngwoon Choi

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel, a luminance compensator, and a data driver. The display panel includes a plurality of pixels. The luminance compensator is configured to calculate a scaling factor based on a target current, a black image current, and a sensing current. The target current is calculated based on an input current input to the display panel. The sensing current is measured from the display panel. The data driver is configured to generate a data voltage based on input image data to supply the data voltage to the pixels. The data voltage has a voltage level adjusted based on the scaling factor.

公开(公告)号：US20230402010A1

公开(公告)日：2023-12-14

申请号：US18451371

申请日：2023-08-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： NAMJAE LIM ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  JINHO LEE

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2300/0861 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/0233 ,  G09G2300/0842 ,  G09G2320/0242

Abstract: A display device includes a display panel including a plurality of pixels, a current sensor that senses a sensing current that flows through the pixels, and a data compensator. The data compensator calculates a target current from an image frame of input image data using a current deviation for each position of the image frame and a current contribution ratio for each color of the image frame, and that generates a scale factor by comparing the target current and the sensing current. The display device further includes a timing controller that generates output image data by scaling grayscale values of the input image data using the scale factor; and a data driver that provides a data signal corresponding to the output image data to the pixels.

公开(公告)号：US20230162678A1

公开(公告)日：2023-05-25

申请号：US17937543

申请日：2022-10-03

Applicant: SAMSUNG DISPLAY CO, LTD.

Inventor： NAMJAE LIM ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  JINHO LEE

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/0233 ,  G09G2300/0842 ,  G09G2300/0861

Abstract: A display device includes a display panel including a plurality of pixels, a current sensor that senses a sensing current that flows through the pixels, and a data compensator. The data compensator calculates a target current from an image frame of input image data using a current deviation for each position of the image frame and a current contribution ratio for each color of the image frame, and that generates a scale factor by comparing the target current and the sensing current. The display device further includes a timing controller that generates output image data by scaling grayscale values of the input image data using the scale factor; and a data driver that provides a data signal corresponding to the output image data to the pixels.

公开(公告)号：US20230154382A1

公开(公告)日：2023-05-18

申请号：US17990130

申请日：2022-11-18

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  SEUNGHO PARK ,  JINHO LEE

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/0275 ,  G09G2300/0819 ,  G09G2330/021 ,  G09G2320/0626 ,  G09G2310/0232 ,  G09G2330/04

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller divides input image data into a plurality of partial image data corresponding to a plurality of display areas of the display panel, calculates local loads corresponding to the plurality of partial image data, determines a scale factor based on the local loads, and applies the scale factor to the input image data 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. The scale factor for a center display area corresponding to a center of the display panel among the plurality of display areas is determined differently from the scale factor for an edge display area corresponding to an edge of the display panel among the plurality of display areas.

公开(公告)号：US20250014517A1

公开(公告)日：2025-01-09

申请号：US18891211

申请日：2024-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： NAMJAE LIM ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  JINHO LEE

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a current sensor that senses a sensing current that flows through the pixels, and a data compensator. The data compensator calculates a target current from an image frame of input image data using a current deviation for each position of the image frame and a current contribution ratio for each color of the image frame, and that generates a scale factor by comparing the target current and the sensing current. The display device further includes a timing controller that generates output image data by scaling grayscale values of the input image data using the scale factor; and a data driver that provides a data signal corresponding to the output image data to the pixels.

公开(公告)号：US20240412680A1

公开(公告)日：2024-12-12

申请号：US18811054

申请日：2024-08-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YOUNGWOON CHOI ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  JINHO LEE ,  NAMJAE LIM

IPC: G09G3/20 ,  G09G3/3233

Abstract: A display device includes a display panel, a driving controller, and a voltage generator. The display panel includes a plurality of pixels. Each of the pixels receives a driving voltage through a first voltage line. The driving controller receives an input image signal including first to third color signals and outputs a voltage control signal for controlling a voltage level of the driving voltage based on the first to third color signals. The voltage generator provides the driving voltage to the first voltage line and determines the voltage level of the driving voltage based on the voltage control signal. The driving controller determines first to third gate-source voltages respectively corresponding to the first to third color signals and outputs the voltage control signal based on the first to third gate-source voltages.