公开(公告)号：US20210043140A1

公开(公告)日：2021-02-11

申请号：US16921329

申请日：2020-07-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung ROH ,  Sangan KWON ,  Sehyuk PARK ,  Hyojin LEE

IPC: G09G3/3233 ,  G09G3/3283 ,  G09G3/3266 ,  G09G3/20

Abstract: A display device includes a display panel and a panel driver configured to drive the display panel. The panel driver receives input image data corresponding to first, second, and third colors at an input frame frequency, and detects whether the input image data represent a still or dynamic image. If the input image data represent the dynamic image, the panel driver drives the display panel at a first output frame frequency substantially the same as the input frame frequency. If the input image data represent the still image, the panel driver calculates a plurality of flicker indexes of the still image for at least two of the first, second, third colors, one or more combinations of the first, second, and third colors, and drives the display panel at a second output frame frequency that is determined based on the plurality of flicker indexes.

公开(公告)号：US20210027707A1

公开(公告)日：2021-01-28

申请号：US16888284

申请日：2020-05-29

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A display device including: a controller including: a zone splitting block configured to divide input image data into a plurality of partial image data respectively corresponding to a plurality of partial panel zones of the display panel; a plurality of panel zone frequency deciding blocks configured to determine a plurality of driving frequencies for the plurality of partial panel zones by analyzing the plurality of partial image data, respectively; a non-driving period setting block configured to classify a plurality of frame periods into a driving frame period and a non-driving frame period based on a maximum driving frequency of the plurality of driving frequencies; and a scan driver control block configured to provide the scan driver input signal to the scan driver in the driving frame period, and to not provide the scan driver input signal to the scan driver in the non-driving frame period.

公开(公告)号：US20220130325A1

公开(公告)日：2022-04-28

申请号：US17436869

申请日：2020-02-25

Applicant: Samsung Display Co., LTD.

Inventor： Hyojin LEE ,  Sehyuk PARK ,  Hui NAM

IPC: G09G3/32 ,  H01L27/15 ,  H01L33/24 ,  H01L33/44

Abstract: A pixel includes a switching transistor transmitting a data voltage to a first node, a storage capacitor electrically connected between a first power supply line and the first node and storing the data voltage, first and second driving transistors electrically connected to the first power supply line, the first node, and a second node, and first and second light emitting elements electrically connected between the second node and a second power supply line. An anode of the first light emitting element and a cathode of the second light emitting element are electrically connected to the second node, a cathode of the first light emitting element and an anode of the second light emitting element are electrically connected to the second power supply line, the first driving transistor is a P-type transistor, and the second driving transistor is an N-type transistor.

公开(公告)号：US20210312871A1

公开(公告)日：2021-10-07

申请号：US17347468

申请日：2021-06-14

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Hyojin LEE ,  Hui NAM ,  Jinyoung ROH ,  Bong Hyun YOU ,  Eunho LEE

IPC: G09G3/3275

Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low 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.

公开(公告)号：US20200211471A1

公开(公告)日：2020-07-02

申请号：US16721564

申请日：2019-12-19

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk PARK ,  Hyojin LEE ,  Hui NAM ,  Jinyoung ROH ,  Bong Hyun YOU ,  Eunho LEE

IPC: G09G3/3275

Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.

公开(公告)号：US20180137803A1

公开(公告)日：2018-05-17

申请号：US15804988

申请日：2017-11-06

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojin LEE ,  Jihye KIM ,  Jae-Hyeon JEON

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2300/0819 ,  G09G2310/0202 ,  G09G2310/0218 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/023

Abstract: A display apparatus includes a display panel including a plurality of data lines and a plurality of scan lines crossing the plurality of data lines, the plurality of data lines including a plurality of first data lines and a plurality of second data lines, a scan driver configured to sequentially output a plurality of scan signals to the plurality of scan lines, a first data driver circuit configured to sequentially output a plurality of first data signals to the plurality of first data lines, and a second data driver circuit configured to sequentially output a plurality of second data signals to the plurality of second data lines based on a feedback signal received from the first data driver circuit.