公开(公告)号：US20240347008A1

公开(公告)日：2024-10-17

申请号：US18532642

申请日：2023-12-07

Applicant: Samsung Display Co., LTD.

Inventor： Su Bin KIM ,  Se Byung CHAE

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0238 ,  G09G2330/021 ,  G09G2340/0435

Abstract: A driving circuit unit includes: a first driver configured to be driven during a display scan period included in an active period of one frame; a second driver configured to be driven during at least one self-scan period included in a blank period of the one frame; a first switch connected between a driving power line to which driving power is supplied and the first driver, configured to be turned on in the active period, and configured to be turned off in the blank period; and a first storage unit configured to receive and store driving data from the first driver before the first switch is turned off.

公开(公告)号：US20250104655A1

公开(公告)日：2025-03-27

申请号：US18972629

申请日：2024-12-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Byung CHAE

IPC: G09G3/3291 ,  G09G3/32 ,  G09G3/3208 ,  G09G3/3233

Abstract: A display device includes: a pixel which emits light at a luminance corresponding to a data voltage applied thereto; and a data driver which supplies the data voltage to the pixel. The data driver includes: a first amplifier which outputs a first reference voltage; a first booster circuit including an input terminal connected to a first input terminal of the first amplifier, and an output terminal connected to a second input terminal of the first amplifier; a second amplifier which outputs a second reference voltage; a resistance string which receives the first and second reference voltages, and generate gamma voltages which are intermediate voltages between the first and second reference voltages; a digital-analog converter which outputs a gamma voltage corresponding to a gray scale of the pixel among the gamma voltages; and a source amplifier which outputs the gamma voltage as the data voltage.

公开(公告)号：US20250037658A1

公开(公告)日：2025-01-30

申请号：US18915513

申请日：2024-10-15

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：US20220223091A1

公开(公告)日：2022-07-14

申请号：US17519921

申请日：2021-11-05

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Byung CHAE ,  Su Bin KIM ,  Jin Young JEON

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device includes a display unit including a pixel which displays an image based on a first power voltage and a data signal, a gamma voltage generator which generates gamma voltages, and a data driver which generates the signal using the gamma voltages and provides the data signal to the pixel. The gamma voltage generator generates first and second reference voltages, generates first and second corrected reference voltages by correcting the first and second reference voltages using a target voltage and an external power voltage provided from the display unit in correspondence with the first power voltage, and generates the gamma voltages by dividing the first and second corrected reference voltages. The gamma voltage generator sets the target voltage based on at least one selected from the first reference voltage, the second reference voltage, and a ground voltage.

公开(公告)号：US20240296788A1

公开(公告)日：2024-09-05

申请号：US18661883

申请日：2024-05-13

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：US20240046833A1

公开(公告)日：2024-02-08

申请号：US18380905

申请日：2023-10-17

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：US20230206831A1

公开(公告)日：2023-06-29

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: G09G3/3225 ,  G09G3/3275

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：US20240013704A1

公开(公告)日：2024-01-11

申请号：US18315178

申请日：2023-05-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Su Bin KIM ,  Se Byung CHAE

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2320/0693 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2340/0435

Abstract: A includes a receiver and a controller. The receiver receives data through a first channel. The controller receives a first synchronization signal including a periodic signal through a second channel different from the first channel and outputs a data signal based on the data and the first synchronization signal.

公开(公告)号：US20230387472A1

公开(公告)日：2023-11-30

申请号：US18232573

申请日：2023-08-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Byung CHAE ,  Su Bin KIM ,  Jin Young JEON

IPC: H01M10/0585

CPC classification number: H01M10/0585

Abstract: A display device includes a display unit including a pixel which displays an image based on a first power voltage and a data signal, a gamma voltage generator which generates gamma voltages, and a data driver which generates the signal using the gamma voltages and provides the data signal to the pixel. The gamma voltage generator generates first and second reference voltages, generates first and second corrected reference voltages by correcting the first and second reference voltages using a target voltage and an external power voltage provided from the display unit in correspondence with the first power voltage, and generates the gamma voltages by dividing the first and second corrected reference voltages. The gamma voltage generator sets the target voltage based on at least one selected from the first reference voltage, the second reference voltage, and a ground voltage.

公开(公告)号：US20230252956A1

公开(公告)日：2023-08-10

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

CPC classification number: G09G5/10 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2320/0673

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.