公开(公告)号：US20170309213A1

公开(公告)日：2017-10-26

申请号：US15487038

申请日：2017-04-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seok Hwan ROH ,  Byung-Hyun KIM ,  Ki-Won SHIN

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G3/2044 ,  G09G3/2074 ,  G09G3/2092 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2320/0666

Abstract: A data compensator includes a voltage drop compensator configured to output a voltage drop compensation value based on input data of pixels included in a display panel, a color difference compensator configured to output a color difference compensation value to compensate for compensate the color difference of the pixels, a compensation data generator configured to generate a compensation value of the input data based on the voltage drop compensation value and the color difference compensation value, and to generate a compensation data by performing an operation on the input data and the compensation value, and a dithering block configured to generate output data by dithering the compensation data.

公开(公告)号：US20230410710A1

公开(公告)日：2023-12-21

申请号：US18088867

申请日：2022-12-27

Applicant: Samsung Display Co., LTD.

Inventor： Dale YIM ,  Seok Hwan ROH

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2330/12 ,  G09G2360/16 ,  G09G3/035

Abstract: A contrast enhancement device included in a display device includes an analysis circuit which receives input image data as input data in a normal mode, receives input test data as the input data in a diagnosis mode, and determines a contrast enhancement coefficient by analyzing the input data, a process circuit which generates output data by performing a contrast enhancement process on the input data based on the contrast enhancement coefficient, where the output data in the normal mode is output image data corresponding to the input image data, and the output data in the diagnosis mode is output test data corresponding to the input test data, and a diagnosis circuit which outputs the output image data in the normal mode, and generates diagnosis result data for the contrast enhancement device by comparing the output test data with reference test data in the diagnosis mode.