公开(公告)号：US20210256914A1

公开(公告)日：2021-08-19

申请号：US16993197

申请日：2020-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Hee Sook PARK ,  Ki Hyun PYUN

IPC: G09G3/3291

Abstract: A display device includes a display panel, a display driver, and a timing controller. The data driver may apply a first data voltage set and subsequently a second data voltage set to the display panel during a screen saver operation of the display device. The first data voltage set may cause the display panel to display a first illuminated area. The second data voltage set may cause the display panel to display a second illuminated area. The timing controller may supply image data to the data driver for the second data voltage set to cause the second illuminated area to have a luminance level. The timing controller may determine a value for controlling the luminance level based on a distance between a position of the first illuminated area and a position of the second illuminated area.

公开(公告)号：US20200226992A1

公开(公告)日：2020-07-16

申请号：US16673768

申请日：2019-11-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon LEE ,  Seung Ho PARK ,  Hee Sook PARK ,  Kyoung Ho LIM

IPC: G09G3/36

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：US20240233606A1

公开(公告)日：2024-07-11

申请号：US18616151

申请日：2024-03-25

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：US20240096258A1

公开(公告)日：2024-03-21

申请号：US18522226

申请日：2023-11-29

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun PYUN ,  Hee Sook PARK

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G3/3233

Abstract: A display device includes blocks each including two or more pixels commonly coupled to a first power line, and a first power voltage controller for determining a margin value of a first power voltage supplied to the first power line, based on load values of the blocks. The first power voltage controller determines the load values based on grayscale values of the pixels included in each of the blocks. The magnitude of the first power voltage is determined to become smaller as the margin value becomes larger. The margin value includes a first margin value. The first power voltage controller determines the first margin value according to a degree of distribution of load values of first blocks arranged in a first direction among the blocks.

公开(公告)号：US20230410714A1

公开(公告)日：2023-12-21

申请号：US18307536

申请日：2023-04-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun PYUN ,  Hee Sook PARK

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2320/041 ,  G09G2330/028 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display device includes a display panel including a plurality of pixels, a timing controller, a data driver and a scale factor. The timing controller calculates a frame load value corresponding to an image frame of input image data and generates image data by scaling grayscale values of the input image data using a scale factor. The data driver generates a data signal corresponding to the image data and supplies the data signal to the pixels. The scale factor generating circuit sets a reference range based on a temperature of the display panel and a global current value that flows through the pixels, and generates the scale factor included within the reference range based on the frame load value and the global current value.

公开(公告)号：US20210193016A1

公开(公告)日：2021-06-24

申请号：US16942200

申请日：2020-07-29

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun PYUN ,  Hee Sook PARK

IPC: G09G3/20

Abstract: A display device includes blocks each including two or more pixels commonly coupled to a first power line, and a first power voltage controller for determining a margin value of a first power voltage supplied to the first power line, based on load values of the blocks. The first power voltage controller determines the load values based on grayscale values of the pixels included in each of the blocks. The magnitude of the first power voltage is determined to become smaller as the margin value becomes larger. The margin value includes a first margin value. The first power voltage controller determines the first margin value according to a degree of distribution of load values of first blocks arranged in a first direction among the blocks.

公开(公告)号：US20240203347A1

公开(公告)日：2024-06-20

申请号：US18404523

申请日：2024-01-04

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：US20220198998A1

公开(公告)日：2022-06-23

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: G09G3/32

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.

公开(公告)号：US20220139289A1

公开(公告)日：2022-05-05

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：US20210375223A1

公开(公告)日：2021-12-02

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: G09G3/36

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.