公开(公告)号：US11423847B2

公开(公告)日：2022-08-23

申请号：US16823184

申请日：2020-03-18

Applicant: Samsung Display Co., Ltd.

Inventor： Hyunho Lim ,  Bongho Bae ,  Ok-Kwon Shin ,  Hyun Ha Yang ,  Chongguk Lee ,  Myeong Bin Lim ,  Sehui Jang

IPC: G09G3/3291 ,  G09G3/36

Abstract: A display device includes: a display panel including a plurality of pixels; a power management circuit configured to generate an analog power supply voltage; and a data driver configured to provide a pre-emphasis voltage and a data voltage to the plurality of pixels based on the analog power supply voltage, wherein the display device is configured to adjust a voltage level of the pre-emphasis voltage according to a distance from the data driver to each of the plurality of pixels to which the pre-emphasis voltage is applied, and wherein the display device is configured to adjust a voltage level of the analog power supply voltage according to the adjusted voltage level of the pre-emphasis voltage.

公开(公告)号：US11776484B2

公开(公告)日：2023-10-03

申请号：US17556064

申请日：2021-12-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Ho Lim ,  Hyun Ha Yang ,  Myeong Bin Lim

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2310/0272 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0285 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device of the invention includes a pixel unit including first pixels which display a first color; and a data driver which supplies first data voltages to the first pixels. The data driver includes: a first master gamma block including first master amplifiers which generate first reference gamma voltages; a first slave gamma block which generates first gamma voltages by dividing the first reference gamma voltages; and a first decoder which provides some of the first gamma voltages as the first data voltages, and each of the first master amplifiers is enabled or disabled based on a maximum luminance of the pixel unit.