公开(公告)号：US11908433B2

公开(公告)日：2024-02-20

申请号：US18134431

申请日：2023-04-13

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/20 ,  G09G2320/0271 ,  G09G2320/0646

Abstract: A display device includes: a pixel part partitioned into blocks; a scale factor provider which calculates a first load value of input image data for the pixel part, calculates a second load value of the input image data for each block, and generates a scale factor based on the first and second load values; and a timing controller which generates image data by scaling gray values of the input image data based on the scale factor. The scale factor provider generates a first scale factor for commonly controlling the gray values for the blocks based on the first load value, when the first load value is greater than or equal to a reference load value, and generates a second scale factor for controlling gray value for each block based on the first and second load values, when the first load value is less than the reference load value.

公开(公告)号：US11636798B2

公开(公告)日：2023-04-25

申请号：US17717471

申请日：2022-04-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Min Young Park ,  Eun Jin Choi

IPC: G09G3/20

Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.

公开(公告)号：US20220230578A1

公开(公告)日：2022-07-21

申请号：US17717471

申请日：2022-04-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Min Young Park ,  Eun Jin Choi

IPC: G09G3/20

Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.

公开(公告)号：US11127345B1

公开(公告)日：2021-09-21

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：US11908365B2

公开(公告)日：2024-02-20

申请号：US18075777

申请日：2022-12-06

Applicant: SAMSUNG DISPLAY CO., LTD.

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

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

CPC classification number: G09G3/20 ,  G09G3/3275 ,  G09G3/3685 ,  G09G3/3688 ,  G09G5/008 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2370/08

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：US11657780B2

公开(公告)日：2023-05-23

申请号：US17345432

申请日：2021-06-11

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/20 ,  G09G2320/0271 ,  G09G2320/0646

Abstract: A display device includes: a pixel part partitioned into blocks; a scale factor provider which calculates a first load value of input image data for the pixel part, calculates a second load value of the input image data for each block, and generates a scale factor based on the first and second load values; and a timing controller which generates image data by scaling gray values of the input image data based on the scale factor. The scale factor provider generates a first scale factor for commonly controlling the gray values for the blocks based on the first load value, when the first load value is greater than or equal to a reference load value, and generates a second scale factor for controlling gray value for each block based on the first and second load values, when the first load value is less than the reference load value.

公开(公告)号：US11361709B2

公开(公告)日：2022-06-14

申请号：US17410481

申请日：2021-08-24

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device includes pixels divided into blocks, a timing controller to generate image data based on input image data, a data driver to generate a data signal corresponding to the image data and supply the data signal to the pixels, and power supply to supply a power voltage to the pixels. In addition, the display device includes a power controller to calculate a first load value corresponding to the pixels, second load values corresponding to each of the blocks, and first peak grayscale values corresponding to each of the blocks based on the input image data. The power controller generates a power control signal to change a voltage level of the power voltage based on the first load value, the second load values, and the first peak grayscale values.

公开(公告)号：US11341932B2

公开(公告)日：2022-05-24

申请号：US17016988

申请日：2020-09-10

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：US11302236B2

公开(公告)日：2022-04-12

申请号：US17235202

申请日：2021-04-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Min Young Park ,  Eun Jin Choi

IPC: G09G3/20

Abstract: A display device includes: a pixel unit including pixels connected to data lines and scan lines, and signal output lines, where at least one signal output line of the signal output lines is connected to each of the scan lines through a contact point; a data driver disposed at one side of the pixel unit to drive the data lines; a scan driver disposed at the one side of the pixel unit together with the data driver to drive the scan lines; and a timing controller controlling the data driver and the scan driver. The data driver includes: output buffers outputting data signals to the data lines, respectively; and a slew rate controller adjusting a slew rate of the data signals by controlling a bias value supplied to the output buffers in units of pixel rows based on positions of the pixels and a change in the data signals.

公开(公告)号：US11915668B2

公开(公告)日：2024-02-27

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

CPC classification number: G09G5/10 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/0686 ,  G09G2330/023

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.