公开(公告)号：US11837148B2

公开(公告)日：2023-12-05

申请号：US17877594

申请日：2022-07-29

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Won Jin Seo ,  Eun Jin Choi

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2330/021 ,  G09G2330/028

Abstract: A display device includes a plurality of pixels grouped into blocks divided into block rows extending in a first direction and arranged in a second direction, wherein each block includes two or more pixels connected to a first power source line, and each pixel is assigned with a grayscale value in a range of grayscale values that is divided into a plurality of grayscale sections; and a first power source voltage adjuster selecting a reference block row, and determining a magnitude of a first power source voltage supplied to the first power source line based on a number of blocks in the reference block row having a grayscale section that is same as a maximum grayscale section of the reference block row. The maximum grayscale section corresponds to a grayscale section that includes a largest grayscale value having a grayscale value ratio greater than a minimum ratio.

公开(公告)号：US11735141B2

公开(公告)日：2023-08-22

申请号：US17745160

申请日：2022-05-16

Applicant: Samsung Display Co., Ltd.

Inventor： Eun Jin Choi ,  Won Jin Seo ,  Ki Hyun Pyun

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2320/0686 ,  G09G2330/023

Abstract: Provided herein may be a display device. The display device may include a display panel including a plurality of unit blocks disposed in a display area, the plurality of unit blocks including a first area displaying a logo or a banner, a second area having largest load value and a third area disposed between the first area and the second area, a display panel driver configured to generate data voltages based on input image data, and a zonal compensator configured to receive the input image data, to calculate load values of the input image data for the plurality of unit blocks, respectively, and to control luminance of each of the first area and the third area based on a location difference between the first area and the second area and a load value difference between the first area and the second area.

公开(公告)号：US11538384B2

公开(公告)日：2022-12-27

申请号：US17352465

申请日：2021-06-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Jang Mi Lee ,  Eun Jin Choi

IPC: G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G09G3/3275

Abstract: A display device including: a display area including pixels connected to data lines and scan lines, the display area including a plurality of signal output lines connected to each of the scan lines through a contact; a data driver including a first data driving circuit at a side of the display area; a scan driver disposed at the side of the display area; and a timing controller, wherein the first data driving circuit includes: output buffers which respectively output data signals to first to k-th data lines (k is an integer greater than 2) of the data lines; and an output delay controller which transmits the data signals to the output buffers through first to k-th transmission lines, and controls delay times of the data signals output to the first to k-th transmission lines based on position information of a pixel row to which the data signals are supplied.

公开(公告)号：US11482164B2

公开(公告)日：2022-10-25

申请号：US17459554

申请日：2021-08-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Won Jin Seo ,  Ki Hyun Pyun

IPC: G09G3/32

Abstract: A display device includes a pixel unit including pixels, a compensator which generate compensation image data by scaling grayscale values of input image data based on temperature data corresponding to an ambient temperature of the pixel unit, a timing controller which generates image data based on the compensation image data, and a data driver which generates a data signal corresponding to the image data and supply the data signal to the pixels. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data decrease when the ambient temperature is greater than a reference temperature. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data increase when the ambient temperature is less than the reference temperature.

公开(公告)号：US20220262327A1

公开(公告)日：2022-08-18

申请号：US17739619

申请日：2022-05-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Ki Hyun Pyun ,  Sung In Kang

IPC: G09G5/10 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

公开(公告)号：US11222576B2

公开(公告)日：2022-01-11

申请号：US16920795

申请日：2020-07-06

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Eun Jin Choi

IPC: G09G3/20

Abstract: A display device and a method for driving the same are described. The display device includes a plurality of pixels, a driving characteristic compensator for sensing driving characteristics of the pixels, generating first power source voltage information according to a change in the driving characteristics, and updating an RGB gamma look up table, a memory for storing the first power source voltage information and the RGB gamma look-up table, a power source manager for generating a first power source voltage based on the first power source voltage information, and a gamma controller for generating reference gamma voltages by dividing the first power source voltage supplied from the power source manager based on the RGB gamma look-up table. Therefore, power consumption of the display device may be reduced.

公开(公告)号：US20210295767A1

公开(公告)日：2021-09-23

申请号：US17061154

申请日：2020-10-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Won Jin Seo ,  Eun Jin Choi ,  Ki Hyun Pyun

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device includes a display divided into a plurality of blocks including pixels, a timing controller for calculating a frame load for an image frame of input image data, and for generating image data by scaling grayscale values of the input image data using a scale factor, a data driver for generating a data signal corresponding to the image data, and for supplying the data signal to the pixels, a current sensor for sensing a global current flowing in a first power source line connected to the pixels, and a scale factor provider for correcting a unit target current determined using a reference block among the blocks based on a deviation in light emitting characteristics between the blocks, for calculating a target current using the frame load and a corrected unit target current, and for comparing the target current with the global current to calculate the scale factor.

公开(公告)号：US20210264832A1

公开(公告)日：2021-08-26

申请号：US17006997

申请日：2020-08-31

Applicant: Samsung Display Co., Ltd.

Inventor： Won Jin Seo ,  Eun Jin Choi ,  Ki Hyun Pyun

IPC: G09G3/20

Abstract: A display device and a method of driving the same are provided. The display device according to an embodiment includes a plurality of pixel rows, a data driver configured to provide first data voltages which correspond to first line grayscale data to pixels disposed in an (N−1)-th pixel row, provide second data voltages which correspond to second line grayscale data to pixels disposed in an N-th pixel row, and provide third data voltages which correspond to third line grayscale data to pixels disposed in an (N+1)-th pixel row, and a data compensator configured to compensate for the second line grayscale data by using one of a first compensation and a second compensation based on the first line grayscale data, the second line grayscale data, and the third line grayscale data.

公开(公告)号：US11948532B2

公开(公告)日：2024-04-02

申请号：US17978057

申请日：2022-10-31

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Eun Jin Choi

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/2007 ,  G09G2320/0673

Abstract: A display device comprises a display area including a plurality of pixels, a peak driving determination part determining peak driving based on an input image signal, a normal driving compensation part including a first luminance lookup table having a first luminance as a peak luminance, a peak driving compensation part including a second luminance lookup table having a second luminance higher than the first luminance as a peak luminance, a compensation adjusting part that generates a peak driving gamma curve by smoothing a first and second luminance gamma curves corresponding to the first and second luminance lookup tables and generates a peak driving lookup table according to the peak driving gamma curve, and a signal controller generating an image data signal by applying one normal driving lookup table to a portion of the display area and applying the peak driving lookup table to an other portion of the display area.

公开(公告)号：US11645974B2

公开(公告)日：2023-05-09

申请号：US17663345

申请日：2022-05-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Jang Mi Lee ,  Eun Jin Choi

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2360/08

Abstract: A display device includes a pixel unit including pixels, a timing controller configured to generate image data based on input image data, a data driver configured to generate a data signal corresponding to the image data and supply the data signal to the pixels, a power supply configured to supply a power voltage to the pixel unit, and a power controller configured to calculate a load value and a peak grayscale value based on the input image data, and to generate a power control signal to change a voltage level of the power voltage based on the load value and the peak grayscale value.