公开(公告)号：US11749208B2

公开(公告)日：2023-09-05

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 ,  H10K59/131

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  H10K59/131 ,  G09G2310/0278 ,  G09G2310/062

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：US11632046B2

公开(公告)日：2023-04-18

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：US11893927B2

公开(公告)日：2024-02-06

申请号：US18151142

申请日：2023-01-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Kyun Ho Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee ,  Sang Su Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

公开(公告)号：US11756474B2

公开(公告)日：2023-09-12

申请号：US18148772

申请日：2022-12-30

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：US11574574B2

公开(公告)日：2023-02-07

申请号：US17220087

申请日：2021-04-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Kyun Ho Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Se Keun Lee ,  Sang Su Han

IPC: G09G3/20

Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

公开(公告)号：US11349392B2

公开(公告)日：2022-05-31

申请号：US16871157

申请日：2020-05-11

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：US12100341B2

公开(公告)日：2024-09-24

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.

公开(公告)号：US11545068B2

公开(公告)日：2023-01-03

申请号：US17036916

申请日：2020-09-29

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

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：US20220262295A1

公开(公告)日：2022-08-18

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: 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：US11282441B2

公开(公告)日：2022-03-22

申请号：US17037089

申请日：2020-09-29

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.