公开(公告)号：US12148373B2

公开(公告)日：2024-11-19

申请号：US17735990

申请日：2022-05-03

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Weon Jun Choe

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a display panel, a scan driver, a data compensator, and a data driver. The display panel includes a first area and a second area distinguished from each other along a scan direction. Each of the first and second areas include pixels. The scan driver is configured to sequentially provide scan signals to the display panel along the scan direction. The data compensator is configured to: detect a pattern in which a difference between adjacent grayscale values in image data is greater than a reference value; and generate compensated image data by compensating for grayscale values corresponding to the second area in the image data based on the pattern corresponding to the first area. The data driver is configured to: generate data signals based on the compensated image data; and provide the data signals to the display panel.

公开(公告)号：US12020629B2

公开(公告)日：2024-06-25

申请号：US17975006

申请日：2022-10-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Byung Chae

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2320/0276

Abstract: A display device including: a display panel; a scan driver; and a data driver, wherein the data driver includes: a controller configured to generate a gamma voltage control signal with respect to gamma voltage information corresponding to a target luminance level of an image displayed by the display panel; a gamma voltage generator configured to generate gamma voltages having a voltage range corresponding to the target luminance level based on the gamma voltage control signal; and a decoder configured to generate the data signal corresponding to a grayscale value using the gamma voltages, and wherein the controller calculates an offset value corresponding to the target luminance level and applies the offset value to values obtained using gamma voltage information about sample luminance levels to obtain gamma voltage information corresponding to the target luminance level.

公开(公告)号：US11996048B2

公开(公告)日：2024-05-28

申请号：US18143071

申请日：2023-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Seung Kyu Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device includes a display panel including pixels coupled to a first scan line and a data line, a power supply to supply voltages, a scan driver to provide a first scan signal to the first scan line a plurality of times for a first frame period (FFP), a data driver to supply a data signal to the data line, and a timing controller to control driving of components. The FFP includes: a first active period (FAP), in which the data signal is supplied; and a first blank period (FBP), in which the data signal is not supplied. The power supply provides on-bias power having a first voltage level (FVL) in the FAP, and provides on-bias power having a second voltage level (SVL) in the FBP. The FBP following the FAP includes a first dimming period in which the on-bias power gradually changes from the FVL to the SVL.

公开(公告)号：US11900871B2

公开(公告)日：2024-02-13

申请号：US18111303

申请日：2023-02-17

Applicant: Samsung Display Co., Ltd.

Inventor： Ji Hyun Ka ,  Tae Hoon Kwon ,  Ki Myeong Eom ,  Chung Yi ,  Se Byung Chae ,  Deok Jun Choi ,  Moon Sang Hwang

IPC: G09G3/3275 ,  G09G3/3225

CPC classification number: G09G3/3225 ,  G09G3/3275 ,  G09G2320/0626

Abstract: A display device including: a display region including a first pixel region, a second pixel region, and a third pixel region; a dummy region including a first dummy region disposed between the second pixel region and the third pixel region; first, second, and third pixels respectively arranged in the first pixel region, the second pixel region, and the third pixel region in a matrix of vertical lines and horizontal lines; a data converter configured to receive first image data including effective data corresponding to the display region and dummy data corresponding to the dummy region and generate second image data by converting a gray scale value of dummy data corresponding to at least one region of the first dummy region in the first image data into a predetermined first gray scale value, the first gray scale value being between a lowest gray scale value and a highest gray scale value.

公开(公告)号：US20230290308A1

公开(公告)日：2023-09-14

申请号：US18143071

申请日：2023-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Seung Kyu Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device includes a display panel including pixels coupled to a first scan line and a data line, a power supply to supply voltages, a scan driver to provide a first scan signal to the first scan line a plurality of times for a first frame period (FFP), a data driver to supply a data signal to the data line, and a timing controller to control driving of components. The FFP includes: a first active period (FAP), in which the data signal is supplied; and a first blank period (FBP), in which the data signal is not supplied. The power supply provides on-bias power having a first voltage level (FVL) in the FAP, and provides on-bias power having a second voltage level (SVL) in the FBP. The FBP following the FAP includes a first dimming period in which the on-bias power gradually changes from the FVL to the SVL.

公开(公告)号：US11276370B2

公开(公告)日：2022-03-15

申请号：US16805804

申请日：2020-03-01

Applicant: Samsung Display Co., Ltd.

Inventor： Su Bin Kim ,  Se Byung Chae

IPC: G09G5/10

Abstract: A display device including a display unit including a scan line, a data line, and a pixel, a gate driver supplying a scan signal, and a source driver supplying a data voltage, in which the source driver includes a gamma voltage generator generating different gamma voltages in response to a gamma enable signal, a digital-to-analog converter generating the data voltage corresponding to a gray scale value using the gamma voltages, and a source buffer outputting the data voltage, the gamma voltage generator includes a first resistor string setting a range of the gamma voltages, gamma buffers outputting selected voltages among divided voltages within the voltage range, and a second resistor string including tabs to divide a voltage between the tabs to generate the gamma voltages, and at least some of the gamma buffers are turned on in a first period and are turned off in a second period.

公开(公告)号：US10403704B2

公开(公告)日：2019-09-03

申请号：US15416352

申请日：2017-01-26

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae

IPC: H01L27/32 ,  G09G3/20 ,  G09G3/30

Abstract: A display apparatus includes: a scan line extending in a first direction; a first data line and a second data line extending in a second direction crossing the first direction; a fixed voltage line extending in the second direction between the first and second data lines and configured to receive a fixed voltage; an auxiliary line between the fixed voltage line and one of the first and second data lines, wherein the fixed voltage is applied to the auxiliary line; a transistor circuit comprising a second transistor coupled to the scan line and the first data line and a first transistor coupled to the second transistor and the fixed voltage line; and a light emitting device coupled to the transistor circuit, wherein at least a portion of the transistor circuit is between the fixed voltage line and the auxiliary line.

公开(公告)号：US12118959B2

公开(公告)日：2024-10-15

申请号：US18136299

申请日：2023-04-18

Applicant: Samsung Display Co., Ltd.

Inventor： Su Bin Kim ,  Se Byung Chae

IPC: G09G5/10 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/36 ,  G06F1/3234 ,  G09G3/3208

CPC classification number: G09G5/10 ,  G06F1/3265 ,  G09G3/2007 ,  G09G3/3208 ,  G09G3/3275 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device including a display panel including a scan line, a data line, and a pixel connected thereto, a gate driver, and a source driver including a gamma voltage generator to generate gamma voltages having different voltage levels, a digital-to-analog converter to generate the data voltage corresponding to a gray scale value using the gamma voltages, and a source buffer, in which the gamma voltage generator includes a first resistor string to set a voltage range of the gamma voltages, a second resistor string to set tab gamma voltages corresponding to some of the gamma voltages within the voltage range, gamma buffers to output the tab gamma voltages, and a third resistor string including tabs respectively connected to output terminals of the gamma buffers, the third resistor string being configured to divide a voltage between the tabs to generate the gamma voltages.

公开(公告)号：US11854453B2

公开(公告)日：2023-12-26

申请号：US18160265

申请日：2023-01-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Chang Kim ,  Se Byung Chae

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/08

Abstract: A display driving circuit includes a clock signal generator which generates a clock signal at a frequency in response to a frequency control signal, a frequency variation determiner which adaptively changes a frequency variation of the clock signal, based on a magnitude of a deviation between the frequency of the clock signal and a target frequency calculated based on a reference clock signal supplied from the outside, and a frequency controller which generates the frequency control signal which updates the frequency of the clock signal, based on the frequency variation, and provides the frequency control signal to the clock signal generator.

公开(公告)号：US11676536B2

公开(公告)日：2023-06-13

申请号：US17736040

申请日：2022-05-03

Applicant: Samsung Display Co., Ltd.

Inventor： Se Byung Chae ,  Seung Kyu Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A display device includes a display panel including pixels coupled to a first scan line and a data line, a power supply to supply voltages, a scan driver to provide a first scan signal to the first scan line a plurality of times for a first frame period (FFP), a data driver to supply a data signal to the data line, and a timing controller to control driving of components. The FFP includes: a first active period (FAP), in which the data signal is supplied; and a first blank period (FBP), in which the data signal is not supplied. The power supply provides on-bias power having a first voltage level (FVL) in the FAP, and provides on-bias power having a second voltage level (SVL) in the FBP. The FBP following the FAP includes a first dimming period in which the on-bias power gradually changes from the FVL to the SVL.