公开(公告)号：US20220157253A1

公开(公告)日：2022-05-19

申请号：US17587325

申请日：2022-01-28

Applicant: Samsung Display Co., Ltd.

Inventor： HongSoo KIM ,  Sangan KWON ,  Jinyoung ROH ,  Sehyuk PARK ,  Sukhun LEE ,  Hyojin LEE

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller controls operations of the gate driver and the data driver and drive a still image display area and a video image display area of a display area of the display panel in different driving frequencies. The driving controller includes a still image determiner which divides the input image data into a plurality of still image determining blocks, respectively determines whether the still image determining blocks represent a still image or a video image and determines a boundary between the still image display area and the video image display area.

公开(公告)号：US20210005130A1

公开(公告)日：2021-01-07

申请号：US16828726

申请日：2020-03-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung ROH ,  Sangan KWON ,  Sehyuk PARK ,  Hyo Jin LEE ,  HongSoo KIM ,  Sukhun LEE

IPC: G09G3/20 ,  G09G5/393

Abstract: A display driver includes a still image detector configured to receive a compressed image bitstream at an input frame frequency from a host processor, and to detect a still image by comparing the compressed image bitstream of a current frame and the compressed image bitstream of a previous frame, a driving frequency changer configured to output the compressed image bitstream at a first output frame frequency equal to the input frame frequency when the still image is not detected, and to output the compressed image bitstream at a second output frame frequency lower than the input frame frequency when the still image is detected, and a decoder configured to generate original image data at the first output frame frequency and the second output frame frequency.

公开(公告)号：US20210043143A1

公开(公告)日：2021-02-11

申请号：US16931509

申请日：2020-07-17

Applicant: Samsung Display Co., Ltd.

Inventor： HongSoo KIM ,  Sehyuk PARK ,  Sangan KWON ,  Jinyoung ROH ,  Sukhun LEE ,  Hyojin LEE ,  Junheyung JUNG

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to the display panel. The data driver outputs a data voltage to the display panel. The driving controller selectively determines a driving mode of the display apparatus between one of a normal driving mode and a low frequency driving mode, and determines a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage storing flicker values for grayscale values of the input image data and a data remapper converting the grayscale value of the input image data to decrease a size of a maximum frequency grayscale area corresponding to a maximum driving frequency in the low frequency driving mode.

公开(公告)号：US20210027715A1

公开(公告)日：2021-01-28

申请号：US16923477

申请日：2020-07-08

Applicant: Samsung Display Co., Ltd.

Inventor： HongSoo KIM ,  Sangan KWON ,  Jinyoung ROH ,  Sehyuk PARK ,  Sukhun LEE ,  Hyojin LEE

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller controls operations of the gate driver and the data driver and drive a still image display area and a video image display area of a display area of the display panel in different driving frequencies. The driving controller includes a still image determiner which divides the input image data into a plurality of still image determining blocks, respectively determines whether the still image determining blocks represent a still image or a video image and determines a boundary between the still image display area and the video image display area.