公开(公告)号：US11176881B2

公开(公告)日：2021-11-16

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：US20200327846A1

公开(公告)日：2020-10-15

申请号：US16788647

申请日：2020-02-12

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hyojin Lee ,  Jinyoung Roh

IPC: G09G3/20

Abstract: A display device including a display panel including a plurality of pixels, and a driver configured to drive the display panel. The driver includes a dither configured to perform a dithering operation on image data including a plurality of pixel data for the plurality of pixels to generate dithered image data including a plurality of dithered pixel data respectively corresponding to the plurality of pixel data, and a still image detector configured to receive the dithered image data, to detect dither-irrelevant pixel data that are not changed from the plurality of pixel data by the dithering operation among the plurality of dithered pixel data, and to determine whether the dithered image data represent a still image by using the dither-irrelevant pixel data.

公开(公告)号：US11900847B2

公开(公告)日：2024-02-13

申请号：US17939018

申请日：2022-09-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Jinyoung Roh ,  Woomi Bae ,  Hae-Kwan Seo ,  Youngha Sohn

IPC: G09G3/22 ,  G09G3/20

CPC classification number: G09G3/2003 ,  G09G2310/0275

Abstract: A display apparatus includes a display panel and a display driver. The display panel has a first pixel structure. The display driver is configured to receive input image data including first data, and generate a driving signal for driving the display panel based on conversion data. The display driver includes a converter configured to convert the first data into the conversion data. The conversion data include conversion data in N rows and M columns. Each of (2K−1)-th column conversion data include first color conversion data representing a first color and second color conversion data representing a second color. Each of 2K-th column conversion data include third color conversion data representing a third color and fourth color conversion data representing the second color. N, M and K are positive integers.

公开(公告)号：US11837143B2

公开(公告)日：2023-12-05

申请号：US18092510

申请日：2023-01-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jin Lee ,  Jae Keun Lim ,  Hong Soo Kim ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G3/20

CPC classification number: G09G3/2074 ,  G09G2310/027 ,  G09G2320/0247 ,  G09G2330/028

Abstract: A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.

公开(公告)号：US20230309345A1

公开(公告)日：2023-09-28

申请号：US18124615

申请日：2023-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： Hae-Kwan Seo ,  Jinyoung Roh ,  Youngha Sohn

IPC: H10K59/121 ,  H10K59/122 ,  H10K59/131 ,  H10K59/35

CPC classification number: H10K59/1213 ,  H10K59/122 ,  H10K59/131 ,  H10K59/353

Abstract: A display device includes: a base substrate; a first pixel including: a first transistor disposed on the base substrate, a first conductive pattern disposed on the first transistor, a first light emitting element disposed on the first conductive pattern, and a first connection line connecting the first conductive pattern and the first light emitting element, and a second pixel adjacent to the first pixel in a first direction and including: a second transistor disposed on the base substrate, a second conductive pattern disposed on the second transistor, a second light emitting element disposed on the second conductive patten, and a second connection line connecting the second conductive pattern and the second light emitting element.

公开(公告)号：US11545092B2

公开(公告)日：2023-01-03

申请号：US17515742

申请日：2021-11-01

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojin Lee ,  Sehyuk Park ,  Jinyoung Roh ,  Geunjeong Park ,  Eunho Lee ,  Hui Nam ,  Bonghyun You

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/12

Abstract: A display device including: a display panel including a pixel connected to a first scan line, second scan line, and data line, the pixel including: a first switch connected to the first scan line; a second switch connected to the second scan line; and a light emitting element; a low-frequency driving controller to output a first power control signal having a first level in a first mode and a second power control signal having a second level in a second mode; a scan driver including first and second scan drivers to drive the first and second scan lines, wherein one of the first and second scan drivers operates in the second mode; and a data driver to operate in the second mode in response to the power control signal having the second level, wherein the data driver operates at a frequency lower than a reference frequency in the second mode.

公开(公告)号：US11538421B2

公开(公告)日：2022-12-27

申请号：US16824377

申请日：2020-03-19

Applicant: Samsung Display Co., Ltd.

Inventor： Hongsoo Kim ,  Sehyuk Park ,  Hyo Jin Lee ,  Sangan Kwon ,  Jinyoung Roh ,  Sukhun Lee ,  Jun Heyung Jung

IPC: G09G3/3291

Abstract: A display device includes display device includes: a display panel including a plurality of pixels; a data driver configured to generate data voltages based on output image data, and to provide the data voltages to the plurality of pixels; and a controller configured to receive input image data and input frequency information from a host processor, and to provide the output image data to the data driver, wherein the controller includes an adaptive refresh block configured to: determine a target frequency by analyzing the input image data; determine a masking ratio based on an input frequency represented by the input frequency information and the target frequency; and selectively output the input image data as the output image data by performing a masking operation on the input image data with the masking ratio.

公开(公告)号：US11436985B2

公开(公告)日：2022-09-06

申请号：US17315449

申请日：2021-05-10

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jinyoung Roh ,  Hyojin Lee ,  Jaekeun Lim ,  Junheyung Jung

IPC: G09G3/3291 ,  G09G3/20

Abstract: A display apparatus includes a display panel including pixels, a gate driver applying a gate signal to a gate line, a data driver applying a data voltage to a data line and a driving controller determining a mode of an input image data to a moving image mode or a static image mode according to whether the input image data is a moving image or a static image, driving the display panel in a moving image driving frequency in the moving image mode and in a static image driving frequency in the static image mode, operating the gate driver in an alternate driving mode such that the gate driver scans a first group of the gate lines in a first duration and a second group of the gate lines in a second duration and inserting a compensation frame to scan all of the gate lines when an image transition is occurred in the static image mode.

公开(公告)号：US11386852B2

公开(公告)日：2022-07-12

申请号：US16922906

申请日：2020-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Joon-Chul Goh ,  Sangan Kwon ,  HongSoo Kim ,  Hui Nam ,  Jinyoung Roh ,  Hyojin Lee

IPC: G09G3/36 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver configured to drive the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. When the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.

公开(公告)号：US11328649B2

公开(公告)日：2022-05-10

申请号：US16717907

申请日：2019-12-17

Applicant: Samsung Display Co., Ltd.

Inventor： Hyojin Lee ,  Sehyuk Park ,  Eunho Lee ,  Jinyoung Roh ,  Hui Nam ,  Bong-Hyun You

IPC: G09G3/20 ,  G09G3/3225

Abstract: A driving controller of a display device, the controller including a segment divider configured to divide the image signal into a plurality of segments and define a predetermined number of adjacent segments among the plurality of segments as a segment block, an image signal adder configured to add up a gray scale value of the image signal of each of the predetermined number of adjacent segments and output the added-up gray scale values, an average gray scale calculator configured to receive the added-up gray scale values and output an average gray scale value, a correction circuit configured to output corrected added-up gray scale values obtained by adding a weight value to each of the added-up gray scale values on the basis of the average gray scale value, and a driving frequency determiner configured to determine the driving frequency of the display device on the basis of the corrected added-up gray scale values.