公开(公告)号：US11257412B2

公开(公告)日：2022-02-22

申请号：US17088056

申请日：2020-11-03

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：US11189234B2

公开(公告)日：2021-11-30

申请号：US16834207

申请日：2020-03-30

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/3275

Abstract: Provided are a display device and a driving method thereof. The display device includes: a display panel for displaying an image, based on data signals supplied from data lines; a load controller for determining a scale factor for controlling a target luminance of the image displayed in the display panel, based on a load of first image data input from the outside; and a data driver for outputting data signals to the data lines, corresponding to the first image data corrected using the scale factor. The data driver includes a plurality of data driver chips coupled to at least one data line among the data lines. The load controller determines the scale factor, based on at least one of a total load of the first image data and local loads with respect to the respective data driver chips.

公开(公告)号：US11145239B2

公开(公告)日：2021-10-12

申请号：US16894157

申请日：2020-06-05

Applicant: Samsung Display Co., LTD.

Inventor： Ki Hyun Pyun ,  Jang Hoon Kwak

IPC: G09G3/20

Abstract: A display device includes a display panel including gate lines, data lines, and pixels; a gate driver that provides gate signals to the pixels through the gate lines; a data driver that provides data signals to the pixels through the data lines; and a timing controller that obtains pre-charging gray scale values based on gray scale values of the pixels. The gate driver simultaneously supplies the gate signals to the gate lines in a first period, and sequentially supplies the gate signals to the gate lines in a second period. The data driver supplies data signals corresponding to the pre-charging gray scale values to the data lines in the first period, and supplies data signals corresponding to the gray scale values of the pixels to the data lines in the second period.

公开(公告)号：US11132949B2

公开(公告)日：2021-09-28

申请号：US16983314

申请日：2020-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Yong Jin Shin ,  Uk Jae Jang ,  Ki Hyun Pyun ,  Sang Su Han

IPC: G09G3/3233

Abstract: A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value.

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：US10580339B2

公开(公告)日：2020-03-03

申请号：US15093402

申请日：2016-04-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Woon Yong Lim ,  Ki Hyun Pyun

IPC: G09G3/20

Abstract: An exemplary embodiment of present disclosure provides a display device including a first horizontal line, a first delay line, a second delay line, a delay value determiner, and a timing controller. The first horizontal line receives a gate pulse signal (CPV) generated by a gate driver. The first delay line is connected to the first horizontal line to transmit a gate pulse signal received at a first horizontal position as a first delay signal. The second delay line is connected to the first horizontal line to transmit a gate pulse signal received at a second horizontal position as a second delay signal. The delay value determiner generates a horizontal delay signal based on the first delay signal and the second delay signal. The timing controller determines generation times of line latch signals applied to a plurality of data lines based on the horizontal delay signal.

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：US11710461B2

公开(公告)日：2023-07-25

申请号：US17545992

申请日：2021-12-08

Applicant: Samsung Display Co., LTD.

Inventor： Geon Hwi Park ,  Jung Eon An ,  Ki Hyun Pyun

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2320/0276 ,  G09G2320/0673

Abstract: A gamma measurement method of a display device includes: storing a current value that is measured during gamma tuning of a display panel; resetting a target current of global current management (GCM) by referring to the current value; and measuring gamma of the display panel while applying the target current of the GCM.

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：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.