公开(公告)号：US11694623B2

公开(公告)日：2023-07-04

申请号：US17403856

申请日：2021-08-16

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/3258 ,  G09G3/00 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/006 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2310/061 ,  G09G2320/045 ,  G09G2320/048

Abstract: A display device may include a display unit, a signal controller, and a sensing unit. The display unit may include pixels. The signal controller may select a first pixel set from the pixel according to ages of the pixels determined based on an image signal. The sensing unit may be electrically connected to each of the display unit and the signal controller and may sense deterioration information of one or more pixels included in the first pixel set for a vertical blank period in which the display unit displays no image.

公开(公告)号：US11615730B2

公开(公告)日：2023-03-28

申请号：US17579955

申请日：2022-01-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/20

Abstract: A display device includes a display panel having a plurality of pixels, a controller configured to determine a peak luminance based on a target luminance and a black duty ratio that is a ratio of a black insertion period to a sum of an image display period and the black insertion period, to determine gray-luminance information representing a plurality of luminances respectively corresponding to a plurality of gray levels based on the peak luminance and a target gamma value, and to generate gray-voltage information representing a plurality of voltage levels respectively corresponding to the plurality of gray levels based on a target white color coordinate and the gray-luminance information, a gray voltage generator configured to generate a plurality of gray voltages having the plurality of voltage levels based on the gray-voltage information, and a data driver configured to provide the plurality of gray voltages corresponding to output image data as data voltages to the plurality of pixels in the image display period, and to provide a black data voltage to the plurality of pixels in the black insertion period.

公开(公告)号：US11972721B2

公开(公告)日：2024-04-30

申请号：US17948787

申请日：2022-09-20

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Kyoung Ho Lim ,  Seung Ho Park ,  Hee Sook Park ,  Sang Myeon Han

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0271 ,  G09G2320/043

Abstract: A display device is disclosed that includes pixels, a memory, and a degradation compensator. The pixels include light emitting elements. The memory is operable to store degradation information including degradation degrees of the light emitting elements. The degradation compensator is operable to receive the degradation information and generate output grayscales by changing each of input grayscales of the pixels in proportion to each of the degradation degrees. The degradation compensator includes a degradation information changer for changing the degradation information by decreasing a degradation degree having a variation greater than a threshold value among variations of the degradation degrees.

公开(公告)号：US11935488B2

公开(公告)日：2024-03-19

申请号：US17453256

申请日：2021-11-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2310/027

Abstract: A display device includes a display panel, a power supply a current measurer, a controller, and a sensor. The display panel includes pixels connected between first and second power lines. The power supply applies power voltages to the first and second power lines. The current measurer measures a current applied to the display panel from the power supply through the first and second power lines. The controller outputs a first sensing control signal indicating whether to sense a voltage-current characteristic of the light emitting element of at least one of the pixels based on a measured current. The sensor senses the voltage-current characteristic of the light emitting element in response to the first sensing control signal.

公开(公告)号：US11881165B2

公开(公告)日：2024-01-23

申请号：US17511620

申请日：2021-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2310/08 ,  G09G2320/029 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/0626 ,  G09G2320/0653 ,  G09G2320/103 ,  G09G2330/021

Abstract: The present disclosure provides a display device. The display device includes a gain provider for gradually decreasing a gain value from a first time when a first period elapses from a time at which an enable signal is generated, and a plurality of pixels for receiving data voltages determined by the gain value and the input grayscale values. The gain provider determines a length of the first period according to a first load value based on the input grayscale values at the time at which the enable signal is generated.

公开(公告)号：US11244596B2

公开(公告)日：2022-02-08

申请号：US17120495

申请日：2020-12-14

Applicant: Samsung Display Co., Ltd.

Inventor： Hee Sook Park ,  Ki Hyun Pyun

IPC: G09G3/20

Abstract: A display device includes: a gain provider configured to set a time point elapsed by a set period from a time point at which a first region of an input image is detected as a still region, as a set time, and to gradually decrease a gain value from the set time; and a grayscale converter configured to generate an output image by applying the gain value to the first region and a second region including a peripheral region of the first region among the input image, wherein the gain provider is configured to set the set period differently according to size of grayscale values in the first region.

公开(公告)号：US11942016B2

公开(公告)日：2024-03-26

申请号：US17666391

申请日：2022-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Hee Sook Park ,  Ki Hyun Pyun

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/027 ,  G09G2320/0271

Abstract: A display device includes: a gain provider configured to set a time point elapsed by a set period from a time point at which a first region of an input image is detected as a still region, as a set time, and to gradually decrease a gain value from the set time; and a grayscale converter configured to generate an output image by applying the gain value to the first region and a second region including a peripheral region of the first region among the input image, wherein the gain provider is configured to set the set period differently according to size of grayscale values in the first region.

公开(公告)号：US11875740B2

公开(公告)日：2024-01-16

申请号：US17566407

申请日：2021-12-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/3233 ,  G09G3/00 ,  H10K50/115

CPC classification number: G09G3/3233 ,  G09G3/006 ,  H10K50/115 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/12 ,  G09G2340/045

Abstract: A display device includes a display panel including a plurality of pixels and partitioned into a plurality of blocks including at least one of the pixels, a timing controller configured to receive input image data from an outside source and generate scaled image data by scaling the input image data using a scale factor, a data driver configured to generate a data signal corresponding to the scaled image data and supply the data signal to the pixels, and a logic circuit configured to generate the scale factor based on the input image data, first weight data, and second weight data different from the first weight data.

公开(公告)号：US11682362B2

公开(公告)日：2023-06-20

申请号：US17402439

申请日：2021-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Seung Ho Park ,  Hee Sook Park ,  Kyoung Ho Lim

IPC: G09G5/10 ,  G09G3/36

CPC classification number: G09G3/3662 ,  G09G2320/0257 ,  G09G2320/045

Abstract: An afterimage compensator and a display device having the same are disclosed, and the afterimage compensator includes an image analyzer configured to determine an amount of image variation based on a change of image data, and an image shifter configured to adjust a shift interval, which is an interval between time points at which an image is shifted, according to the amount of image variation.

公开(公告)号：US11450260B2

公开(公告)日：2022-09-20

申请号：US17479306

申请日：2021-09-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hee Sook Park ,  Kyoung Ho Lim ,  Seung Ho Park ,  Jae Hoon Lee

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device includes a set period setting unit for setting, as a set time, a time for which a set period elapses from a time at which a first area included in an input image is detected as a still area, and a gain generator for gradually decreasing an initial level of a gain value down to a saturation level having a lowest value of the gain value from the set time. The set period setting unit differently sets the saturation level of the gain value and a final level of the gain value, corresponding to grayscale values of the first area and a load value of the input image. The load value is an average value of grayscale values of an entirety of an area of the input image.