公开(公告)号：US10332455B2

公开(公告)日：2019-06-25

申请号：US14740973

申请日：2015-06-16

Applicant: Samsung Display Co., Ltd.

Inventor： Byungki Chun ,  Jeonghun So ,  Wonwoo Jang

IPC: G09G3/3225 ,  G09G3/3275

Abstract: An organic light-emitting display device includes: a display panel including a plurality of pixels, each of the plurality of pixels including an organic light-emitting device configured to emit colored light; a gamma data generating unit configured to generate gamma data corresponding to received RGB data; a correction rate calculating unit configured to determine a luminance correction rate of each of the plurality of pixels based on the gamma data respectively corresponding to the plurality of pixels; and a correction value determining unit configured to determine a luminance correction value of a color displayed via each of the plurality of pixels.

公开(公告)号：US11676543B2

公开(公告)日：2023-06-13

申请号：US17326684

申请日：2021-05-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wonwoo Jang ,  Seungho Park ,  Kyoungho Lim

IPC: G09G3/3275

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

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller detects a logo region including a logo in image data, determines a correction gain based on a first average gray level of the logo region and a second average gray level of a peripheral region adjacent to 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：US11955048B2

公开(公告)日：2024-04-09

申请号：US18100188

申请日：2023-01-23

Applicant: Samsung Display Co., Ltd.

Inventor： Wonwoo Jang

IPC: G09G3/20 ,  G09G3/3225

CPC classification number: G09G3/2044 ,  G09G3/3225 ,  G09G2300/0819 ,  G09G2310/027 ,  G09G2320/0285

Abstract: A display device includes a display panel and a panel driving block that controls driving of the display panel. The panel driving block includes a dithering judgment block, a memory, and a dithering compensation block. The dithering judgment block determines whether a first sub-image signal corresponding to a first image requiring dithering is included in the input image signal. The dithering compensation block reads out dithering patterns, which correspond to the first sub-image signal, from among the plurality of dithering patterns from the memory, generates a compensation dithering pattern by the read dithering patterns and a random number table, and outputs a correction image signal through the first sub-image signal and the compensation dithering pattern. The first image is displayed in a stain area, and the stain area includes at least one unit area.

公开(公告)号：US11776458B2

公开(公告)日：2023-10-03

申请号：US17895648

申请日：2022-08-25

Applicant: Samsung Display Co., Ltd.

Inventor： Wonwoo Jang ,  Seungho Park

IPC: G09G3/20 ,  G09G3/3208 ,  G06T7/13 ,  G09G3/30

CPC classification number: G09G3/2096 ,  G06T7/13 ,  G09G3/30 ,  G09G3/3208 ,  G09G2300/0452 ,  G09G2320/0233 ,  G09G2320/0242

Abstract: A display device includes a display panel and a driving circuit that receives an input image signal and provides an output image signal corresponding to the input image signal to the display panel. The driving circuit includes an edge and slope detector that detects an edge of the input image signal, and determines an angle between the edge and a virtual line parallel to a first direction, a weight calculator that determines a weight, based on the edge and the angle, and a rendering module that compensates for the input image signal, based on the weight, and outputs the output image signal. The weight is determined through an arithmetic operation between the edge and the angle.

公开(公告)号：US11749186B2

公开(公告)日：2023-09-05

申请号：US17708485

申请日：2022-03-30

Applicant: Samsung Display Co., Ltd.

Inventor： DongHyun Noh ,  Wonwoo Jang ,  Kyoungho Lim

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2320/0626

Abstract: A display device includes a display panel including a correction area in which a correction image including a logo image and a logo background image is displayed, and a panel driving block. The panel driving block includes a luminance correction block which corrects a luminance of the correction image, and the luminance correction block includes a first correction block which divides the correction area into a plurality of sub-areas, based on a distance from the logo image and generates an area correction signal for correcting the luminance of the correction image, a second correction block which generates a luminance correction signal for correcting the luminance of the correction image displayed in each of the sub-areas, based on a grayscale of the image signal and the area correction signal, and a third correction block which corrects the luminance of the correction image.