公开(公告)号：US20240312402A1

公开(公告)日：2024-09-19

申请号：US18420109

申请日：2024-01-23

Applicant: Samsung Display Co., LTD.

Inventor： KYOUNGHO LIM ,  SEUNGHO PARK ,  JAEHOON LEE ,  YOONJU KIM ,  Jongha SHIN ,  KITAE YOON

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/103 ,  G09G2340/0464

Abstract: Disclosed is a display device, which includes a display panel that displays an image, and a controller that receives image data corresponding to a frame and drives the display panel. The controller divides the image data into a plurality of blocks and determines whether the image is a fixed image based on an inter-frame variation of a block of the plurality of blocks. The controller changes an afterimage prevention operation mode when the number of blocks displaying the fixed image for a period equal to or greater than a first reference value among the plurality of blocks is equal to or greater than a second reference value.

公开(公告)号：US20240046886A1

公开(公告)日：2024-02-08

申请号：US18118096

申请日：2023-03-06

Applicant: Samsung Display Co., Ltd.

Inventor： HEESOOK PARK ,  DAYE MOON ,  KYOUNGHO LIM ,  SEULKI SON

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2320/0233 ,  G09G2320/0626

Abstract: A display device includes a display panel which includes a compensation area, an image processing device, a timing controller which includes an average luminance decrease rate calculator which calculates an average luminance decrease rate, a luminance decrease rate calculator which calculates a luminance decrease rate for the compensation area, and a data compensator which generates output image data by applying the luminance decrease rate for the compensation area to the input image data, and a data driver which provides data voltages generated based on the output image data to the display panel.

公开(公告)号：US20230274706A1

公开(公告)日：2023-08-31

申请号：US18313837

申请日：2023-05-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONWOO JANG ,  SEUNGHO PARK ,  KYOUNGHO LIM

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2360/16 ,  G09G2310/027

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller receives image data including data representing a logo, detects a logo region including the logo in the image data, determines a correction gain based on a quotient of a second gray level of a peripheral region adjacent to the logo region and a first gray level of the logo region, and generates corrected image data by correcting the image data based on the correction gain. The data driver provides data signals to the plurality of pixels based on the corrected image data.

公开(公告)号：US20230162667A1

公开(公告)日：2023-05-25

申请号：US17870206

申请日：2022-07-21

Applicant: Samsung Display Co., LTD.

Inventor： HEESOOK PARK ,  BONGGYUN KANG ,  KYOUNGHO LIM

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2320/0257 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2310/027 ,  G09G2320/0673 ,  G09G2320/043

Abstract: A display device includes: a display panel, which displays an image; a driving controller, which determines a gain reduction region based on input image data input to the display panel, and generates a data signal by correcting the input image data by applying a gain to the input image data to correspond to the gain reduction region; and a data driver, which converts the data signal into a data voltage to output the data voltage to the display panel. The driving controller is configured to generate first, second, and third data signals by correcting first, second, and third input image data input to first, second, and third regions of the display panel by applying first, second, and third gain values to the first, second, and third input image data, respectively.

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