公开(公告)号：US11645972B2

公开(公告)日：2023-05-09

申请号：US17544057

申请日：2021-12-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Jang Hoon Kwak

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/027 ,  G09G2320/0242 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/12

Abstract: A display device may include first pixels configured to emit light in a first color, second pixels configured to emit light in a second color different from the first color, a data driver configured to supply first reference voltages to data lines coupled to the first pixels, and a sensing circuit configured to receive first sensing voltages from sensing lines coupled to the first pixels, wherein the data driver supplies second reference voltages different from the first reference voltages to data lines coupled to the second pixels, and the sensing circuit receives second sensing voltages from sensing lines coupled to the second pixels.

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：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：US11244600B2

公开(公告)日：2022-02-08

申请号：US16842444

申请日：2020-04-07

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Myoung Seop Song ,  Myung Ho Lee

IPC: G09G3/30 ,  G09G3/32

Abstract: A display device and a driving method thereof are disclosed, and the display device includes a first pixel connected to a first data line, a first scan line, and a first power source line, emitting light in a first period, and not emitting light in a second period following the first period; a second pixel connected to a second data line, the first scan line, and the first power source line, not emitting light in the first period, and emitting light in the second period; a current sensor sensing a current flowing through the first power source line in the first period to provide a first sensing current value, and sensing the current flowing through the first power source line in the second period to provide a second sensing current value; and a memory storing a first block target current value corresponding to the first sensing current value and a second block target current value corresponding to the second sensing current value.

公开(公告)号：US11017729B2

公开(公告)日：2021-05-25

申请号：US16731674

申请日：2019-12-31

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/32 ,  G09G3/3291 ,  G09G3/20

Abstract: A display device includes: a display panel including a plurality of pixels; a first correction circuit configured to perform, using a gamma correction value, a gamma correction for first image data; a second correction circuit configured to receive the gamma-corrected first image, and to generate second image data by performing gray-scale compensation for the gamma-corrected first image data; and a data driver configured to provide a data signal corresponding to the second image data to the plurality of pixels, wherein the second correction circuit performs the gray-scale compensation based on the gamma correction value and a threshold value measured for each of the plurality of pixels.

公开(公告)号：US10825416B2

公开(公告)日：2020-11-03

申请号：US16401088

申请日：2019-05-01

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Jong Young Yun

IPC: G09G3/30 ,  G09G3/36 ,  G09G3/3275

Abstract: An interface system may include a transmitter and a receiver, which are coupled to each other through transmission lines, wherein the transmitter includes a transmission controller configured to transmit a reset signal to the receiver, wherein the receiver includes a reset unit configured to reset input common mode voltages of the transmission lines, based on the reset signal, and wherein the transmission lines include a first transmission line for transmitting a signal having a first phase, and a second transmission line for transmitting a signal having a second phase that is different from the first phase.

公开(公告)号：US10665200B2

公开(公告)日：2020-05-26

申请号：US16361168

申请日：2019-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Eui Myeong Cho

IPC: G09G3/36 ,  G09G3/3258

Abstract: A display device includes: a driving voltage provider for generating a PWM signal according to the frequency of a clock signal, and providing a driving voltage generated according to the duty ratio of the PWM signal to at least one of the pixels, the data driver, and the scan driver. The driving voltage provider tunes the frequency of the clock signal to a first frequency in a first section, tunes the frequency of the clock signal to a second frequency smaller than the first frequency in a second section in which the magnitude of a driving voltage is larger than that in the first section, and tunes the frequency of the clock signal to a third frequency larger than the first frequency in a third section in which the magnitude of a driving voltage is smaller than that in the first section.

公开(公告)号：US10019927B2

公开(公告)日：2018-07-10

申请号：US15000680

申请日：2016-01-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jeong Doo Lee ,  Min Young Park ,  Ki Hyun Pyun

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2320/0233 ,  G09G2320/0673 ,  G09G2330/02 ,  G09G2330/028

Abstract: A display device and a driving method thereof can reduce or prevent deterioration of image quality caused by ripples of a power voltage. A display device includes a gamma reference voltage generator generating a plurality of gamma reference voltages using a power voltage. A gamma selection signal generator generates a gamma selection signal corresponding to at least one gamma reference voltage among the gamma reference voltages and the power voltage. A gamma data supply unit stores a plurality of gamma data sets and outputs a gamma data set corresponding to the gamma selection signal from among the gamma data sets. A data driver generates a data signal using the gamma data set supplied from the gamma data supply unit and the gamma reference voltages. A display unit includes data lines transmitting the data signal.