公开(公告)号：US11670225B2

公开(公告)日：2023-06-06

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

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.

公开(公告)号：US11475845B2

公开(公告)日：2022-10-18

申请号：US17323251

申请日：2021-05-18

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 ,  H01L27/32 ,  G09G3/3275

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：US20220101794A1

公开(公告)日：2022-03-31

申请号：US17323251

申请日：2021-05-18

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 ,  H01L27/32 ,  G09G3/3275

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：US11289018B2

公开(公告)日：2022-03-29

申请号：US17065418

申请日：2020-10-07

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Yong-Jin Shin ,  Seong Jun Kim ,  Jung-Taek Kim ,  Joon Suk Baik ,  Se Keun Lee ,  Uk Jae Jang ,  Sang Su Han

IPC: G09G3/3233 ,  G09G3/3275

Abstract: A display device includes: a net power control circuit configured to analyze a screen load from an input image signal to generate a load signal including a load value corresponding to the screen load; and an overcurrent protection circuit configured to set a set current value at a predetermined ratio with respect to a global current value corresponding to the load value included in the load signal, and to determine whether or not the display device is powered off based on the set current value.

公开(公告)号：US10984718B2

公开(公告)日：2021-04-20

申请号：US16541822

申请日：2019-08-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Joon Suk Baik ,  Jae Woo Ryu ,  Myung Ho Lee ,  Sang Su Han

IPC: G09G3/3258 ,  G09G3/20

Abstract: A display device may include pixels coupled to scan lines and data lines, at least one scan driver for supplying a scan signal to the pixels through the scan lines, and a data driver for supplying a data signal and a bias signal to the pixels through the data lines. The pixels are supplied with the data signal when the scan signal is supplied during display periods, and are supplied with the bias signal when the scan signal is supplied during a bias period between the display periods. By the bias signal, a bias voltage is supplied to first group pixels that emit light with a preset grayscale during the display periods.

公开(公告)号：US12165558B2

公开(公告)日：2024-12-10

申请号：US18358428

申请日：2023-07-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G5/00 ,  G09G3/20

Abstract: A display device includes a plurality of pixels, a power supply, a voltmeter, and a timing controller. The power supply is configured to generate an initialization voltage to be supplied to a sensing pixel among the pixels. The voltmeter is configured to measure a first value of the initialization voltage supplied to the sensing pixel during an active period of a frame period and a second value of the initialization voltage supplied to the sensing pixel during a vertical blank period of the frame period. The timing controller is configured to generate rewrite image data that is supplied to the sensing pixel during the vertical blank period. The rewrite image data is generated from image data applied to the pixels during the active period and a difference between the first and second values.

公开(公告)号：US12094392B2

公开(公告)日：2024-09-17

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：US11741878B2

公开(公告)日：2023-08-29

申请号：US17485771

申请日：2021-09-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G3/2007 ,  G09G2300/0809 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2330/021

Abstract: A display device includes a plurality of pixels, a power supply, a voltmeter, and a timing controller. The power supply is configured to generate an initialization voltage to be supplied to a sensing pixel among the pixels. The voltmeter is configured to measure a first value of the initialization voltage supplied to the sensing pixel during an active period of a frame period and a second value of the initialization voltage supplied to the sensing pixel during a vertical blank period of the frame period. The timing controller is configured to generate rewrite image data that is supplied to the sensing pixel during the vertical blank period. The rewrite image data is generated from image data applied to the pixels during the active period and a difference between the first and second values.

公开(公告)号：US11138940B2

公开(公告)日：2021-10-05

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 ,  G09G3/3291 ,  H01L27/32

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：US11132949B2

公开(公告)日：2021-09-28

申请号：US16983314

申请日：2020-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Yong Jin Shin ,  Uk Jae Jang ,  Ki Hyun Pyun ,  Sang Su Han

IPC: G09G3/3233

Abstract: A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value.