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：US20230328876A1

公开(公告)日：2023-10-12

申请号：US18208923

申请日：2023-06-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yong Jin SHIN ,  Kyun Ho Kim ,  Uk Jae Jang ,  Bong Im Park

IPC: H05K1/02 ,  H05K1/18 ,  H01L23/498 ,  H05K1/14 ,  G09G3/00

CPC classification number: H05K1/0268 ,  H05K1/18 ,  H01L23/49838 ,  H05K1/14 ,  G09G3/006 ,  G09G2330/12 ,  H01L23/4985 ,  H05K2201/049 ,  H05K2201/10128

Abstract: A display device including: a display panel; a first substrate attached to a side of the display panel; and a second substrate attached to a side of the first substrate, wherein the display panel includes a first panel test pad and a second panel test pad, the first substrate includes a 1-1 circuit test lead overlapping and connected to the first panel test pad, a 1-2 circuit test lead overlapping and connected to the second panel test pad, a 2-1 circuit test lead overlapping and connected to the second substrate, a 1-1 test lead line connected to the 1-1 circuit test lead, a 1-2 test lead line connected to the 1-2 circuit test lead, and a first test lead line connected to the 2-1 circuit test lead, and the 1-1 test lead line and the 1-2 test lead line are connected to the first test lead 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：US11508316B2

公开(公告)日：2022-11-22

申请号：US16846417

申请日：2020-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim

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

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：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：US11017729B2

公开(公告)日：2021-05-25

申请号：US16731674

申请日：2019-12-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Sung In Kang ,  Ki Hyun Pyun

IPC: G09G3/32 ,  G09G3/3291 ,  G09G3/20

Abstract: A display device includes: a display panel including a plurality of pixels; a first correction circuit configured to perform, using a gamma correction value, a gamma correction for first image data; a second correction circuit configured to receive the gamma-corrected first image, and to generate second image data by performing gray-scale compensation for the gamma-corrected first image data; and a data driver configured to provide a data signal corresponding to the second image data to the plurality of pixels, wherein the second correction circuit performs the gray-scale compensation based on the gamma correction value and a threshold value measured for each of the plurality of pixels.

公开(公告)号：US10714035B2

公开(公告)日：2020-07-14

申请号：US15801899

申请日：2017-11-02

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：US09984641B2

公开(公告)日：2018-05-29

申请号：US15158471

申请日：2016-05-18

Applicant: Samsung Display Co., Ltd.

Inventor： Sung In Kang ,  Kyun Ho Kim ,  Min Ho Park ,  Ji Eun Jang

IPC: G09G3/20 ,  G09G3/36 ,  G09G3/3266

CPC classification number: G09G3/3677 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3674 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2320/0219 ,  G09G2330/04 ,  G09G2330/06 ,  G09G2330/08 ,  G09G2330/12

Abstract: A gate protection circuit includes: a clock signal generator to generate a plurality of gate clock signals; a gate driver to output gate signals based on the plurality of gate clock signals, the gate driver including a plurality of gate driving circuits cascaded to each other; and a monitoring line configured to transmit a feedback signal based on the plurality of gate clock signals via the plurality of gate driving circuits to the clock signal generator. The clock signal generator is to block generation of the plurality of gate clock signals in response to the feedback signal.