公开(公告)号：US20230016947A1

公开(公告)日：2023-01-19

申请号：US17933551

申请日：2022-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho KIM ,  Jung Taek KIM ,  Hong Kyu KIM ,  Hyung Keun PARK ,  Joon Suk BAIK ,  Young Soo SOHN ,  Yong Jin SHIN ,  Se Keun LEE

IPC: G09G3/3266 ,  G09G3/3275 ,  H01L27/32

Abstract: A display device includes: a pixel connected to each of a first scan line, a second scan line, and a data line; a scan driver supplying a first scan signal to the first scan line and a second scan signal to the second scan line; a controller dividing one frame period into an active period and a blank period and generating a count signal in which a time duration of the blank period is counted and a power control signal; a data driver supplying a data signal to the data line; and a power supply controlling a source driving voltage supplied to the data driver according to a duration of the blank period based on the power control signal. When the count signal reaches a reference value, the controller supplies a start signal for output of the first scan signal to the scan driver.

公开(公告)号：US20220294342A1

公开(公告)日：2022-09-15

申请号：US17827862

申请日：2022-05-30

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho KIM ,  Jung-taek KIM ,  Joon Suk BAIK ,  Sang Su HAN ,  Jae Woo RYU ,  Myung Ho LEE

IPC: H02M3/156 ,  H03F3/14

Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

公开(公告)号：US20220208085A1

公开(公告)日：2022-06-30

申请号：US17700016

申请日：2022-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek KIM ,  Sang Su HAN ,  Kyun Ho KIM ,  Hyung Keun PARK ,  Joon Suk BAIK ,  Se Keun LEE

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/36

Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.

公开(公告)号：US20220084471A1

公开(公告)日：2022-03-17

申请号：US17536181

申请日：2021-11-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun PYUN ,  Sung In KANG ,  Kyun Ho KIM

IPC: G09G3/3275

Abstract: Provided are a display device and a driving method thereof. The display device includes: a display panel for displaying an image, based on data signals supplied from data lines; a load controller for determining a scale factor for controlling a target luminance of the image displayed in the display panel, based on a load of first image data input from the outside; and a data driver for outputting data signals to the data lines, corresponding to the first image data corrected using the scale factor. The data driver includes a plurality of data driver chips coupled to at least one data line among the data lines. The load controller determines the scale factor, based on at least one of a total load of the first image data and local loads with respect to the respective data driver chips.

公开(公告)号：US20210287583A1

公开(公告)日：2021-09-16

申请号：US17196021

申请日：2021-03-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yong Jin SHIN ,  Kyun Ho KIM ,  Hyoung Wook KIM ,  Bong Im PARK ,  Uk Jae JANG

IPC: G09G3/20

Abstract: A display device includes: a display panel including pixels; a scan driver which supplies a scan signal to scan lines connected to the pixels and supplies a sensing signal to sensing lines connected to the pixels; a data driver which supplies a data signal corresponding to image data to data lines connected to the pixels; a sensing part which senses a threshold voltage of a first transistor included in each of the pixels through receiving lines connected to the pixels, and corrects the sensed threshold voltage based on a voltage drop corresponding to at least one of an internal resistance of the data lines and an internal resistance of the receiving lines; and a timing controller which generates the image data by changing input image data based on the corrected threshold voltage.

公开(公告)号：US20210210019A1

公开(公告)日：2021-07-08

申请号：US17007268

申请日：2020-08-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Su HAN ,  Kyun Ho KIM ,  Jung Taek KIM ,  Joon Suk BAIK ,  Se Keun LEE

IPC: G09G3/3266 ,  H01L27/32 ,  G09G3/3291

Abstract: A display device includes a scan driver which includes a first stage including a first output terminal connected to a first carry line, a second output terminal connected to a first scan line, and a third output terminal connected to a first sensing line, and a second stage including a first input terminal connected to the first carry line, a fourth output terminal connected to a second scan line, and a fifth output terminal connected to a second sensing line. In a sensing period, signals having a turn-on level are respectively output from the first output terminal, the second output terminal, and the third output terminal during a predetermined delay period before signals having a turn-on level are respectively output from the fourth output terminal and the fifth output terminal.

公开(公告)号：US20210005146A1

公开(公告)日：2021-01-07

申请号：US16846417

申请日：2020-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho KIM

IPC: G09G3/3291 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3233 ,  H01L27/32

Abstract: Provided are a display device and a method of operating the same. The method of operating the display device, which includes a display panel including a plurality of pixels and a data driver configured to provide data signals having different voltage levels to all data lines connected to pixels, comprises steps of applying a data signal having a first data voltage to all the data lines, determining whether a preset sensing current flows in a target wire, and applying a data signal having a second data voltage to all the data lines, wherein the second data voltage is offset from the first data voltage by a certain voltage level.

公开(公告)号：US20200302884A1

公开(公告)日：2020-09-24

申请号：US16898011

申请日：2020-06-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Jun PARK ,  Kyun Ho KIM ,  Shim Ho YI ,  Yong Jin SHIN ,  Yu Chol KIM

IPC: G09G3/36 ,  G09G3/20 ,  G02F1/13357 ,  G09G3/3258 ,  G09G3/34 ,  H01L27/32

Abstract: A display device capable of setting an optimal output enable value according to a color pattern and a method for driving the display device. A timing controller is configured to receive an image signal from an external source, identify a color pattern and set an output enable value corresponding to the identified color pattern. A scan driver is configured to receive the output enable value and generate a first scan signal having a first turn-on signal and a second scan signal adjacent to the first scan signal and having a second turn-on signal. The scan driver may adjust an interval between the first turn-on signal and the second turn-on signal based on the output enable value.

公开(公告)号：US20230419877A1

公开(公告)日：2023-12-28

申请号：US18464961

申请日：2023-09-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Su HAN ,  Kyun Ho KIM ,  Seong Jun KIM ,  Jung Taek KIM ,  Hyung Keun PARK ,  Joon Suk BAIK ,  Se Keun LEE

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/027 ,  G09G2310/0278

Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.

公开(公告)号：US20230316994A1

公开(公告)日：2023-10-05

申请号：US18327859

申请日：2023-06-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek KIM ,  Sang Su HAN ,  Kyun Ho KIM ,  Hyung Keun PARK ,  Joon Suk BAIK ,  Se Keun LEE

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/32 ,  G09G3/2092 ,  G09G3/3233 ,  G09G3/36 ,  G09G3/3648 ,  G09G2310/0205 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2310/061 ,  G09G2310/062 ,  G09G2320/0252 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.