公开(公告)号：US11881160B1

公开(公告)日：2024-01-23

申请号：US18107409

申请日：2023-02-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Sik Yoon ,  Jong Woon Kim ,  Won Jin Seo ,  Ki Hyun Sung ,  Ye Seul Lee ,  Dae Ho Hwang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2320/0271 ,  G09G2330/04

Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.

公开(公告)号：US11699388B2

公开(公告)日：2023-07-11

申请号：US17591078

申请日：2022-02-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Sik Yoon ,  Jong Woon Kim ,  Ick Kyu Jang ,  Dae Ho Hwang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0272

Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.

公开(公告)号：US11263989B2

公开(公告)日：2022-03-01

申请号：US17101355

申请日：2020-11-23

Applicant: Samsung Display Co., Ltd.

Inventor： Seung-Woon Shin ,  Sang Won Kim ,  Jong Woon Kim ,  Kyu-Jin Park ,  Woon-Rok Jang ,  Tae-Seok Ha

IPC: G09G3/36

Abstract: A display device includes a display panel, a data driver, a gate driver, and a controller. The display panel includes a plurality of pixels. The data driver provides data voltages to the plurality of pixels through data lines during an active period of a frame period and provides a blank voltage to the plurality of pixels through the data lines during a blank period of the frame period. The gate driver provides a gate-on voltage to the plurality of pixels through gate lines during the active period and provides a gate-off voltage to the plurality of pixels through the gate lines during the blank period. The controller controls the data driver and the gate driver. The blank voltage increases and the gate-off voltage increases, when a time in the blank period reaches a predetermined time.