公开(公告)号：US20230298493A1

公开(公告)日：2023-09-21

申请号：US17961134

申请日：2022-10-06

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  MYOUNGSEOP SONG ,  EUNJIN CHOI

IPC: G09G3/00 ,  G01R31/28 ,  G01R19/32

CPC classification number: G09G3/006 ,  G01R31/2825 ,  G01R19/32 ,  G09G2330/02 ,  G09G2320/041 ,  G09G2300/0426

Abstract: A display device includes: a display panel including pixels, a power voltage generator for applying a power current to the display panel in a driving period; and a current sensor including a sensing resistor disposed between the display panel and the power voltage generator; a sensing current determiner for determining a sensing current; and a constant current generator for generating a constant current to the sensing resistor in a test period. The sensing current determiner determines a test sensing current based on a test sensing voltage applied to opposite electrodes of the sensing resistor in the test period and an initial sensing resistance, determines a first sensing resistance based on the test sensing current, the initial sensing resistance, and the constant current, and determines the sensing current based on a driving sensing voltage applied to the electrodes of the sensing resistor in the driving period and the first sensing resistance.

公开(公告)号：US20230030280A1

公开(公告)日：2023-02-02

申请号：US17876490

申请日：2022-07-28

Applicant: Samsung Display Co., LTD.

Inventor： KIHYUN PYUN ,  JANG-MI LEE

IPC: G09G3/20

Abstract: A controller to drive a display includes a voltage code generator and a voltage code compensator. The voltage code generator is configured to generate a first voltage code to drive pixels in the display based on input image data. The voltage code compensator is to generate a second voltage code to drive the pixels by compensating zero-grayscale codes of the first voltage code based on the zero-grayscale codes of the first voltage code, one-grayscale codes of the first voltage code, and the input image data.

公开(公告)号：US20230017624A1

公开(公告)日：2023-01-19

申请号：US17952627

申请日：2022-09-26

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  HEESOOK PARK

IPC: G09G3/20

Abstract: A driving controller includes an image analyzer, a grayscale setter and a time-and-space arranger. The image analyzer analyzes input image data to determine a peak luminance. The grayscale setter receives a gamma value and the peak luminance and to determine a boundary grayscale value and a minimum grayscale value. The time-and-space arranger is configured to temporally and spatially arrange first data having the boundary gray scale value and second data having the minimum grayscale value. The driving controller is configured to drive a display panel using the first data and the second data for a low grayscale range of which a grayscale is equal to or less than the boundary grayscale value and to drive the display panel based on a data signal corresponding to a grayscale value of the input image data for a normal grayscale range of which a grayscale is greater than the boundary grayscale value.

公开(公告)号：US20220392389A1

公开(公告)日：2022-12-08

申请号：US17891861

申请日：2022-08-19

Applicant: Samsung Display Co., Ltd.

Inventor： HEESOOK PARK ,  KIHYUN PYUN

IPC: G09G3/20

Abstract: An embodiment of a display apparatus includes a display panel, a driving controller, and a data driver. In operation the driving controller determines a gain reducing area based on an edge load of input image data corresponding to an edge area of the display panel and compensates a grayscale value of the input image data corresponding to the gain reducing area to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.

公开(公告)号：US20220254318A1

公开(公告)日：2022-08-11

申请号：US17457300

申请日：2021-12-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  EUNJIN CHOI

IPC: G09G5/10

Abstract: A screen saver controller includes a temperature calculator, a temperature comparator, an operator, and a screen saver data generator. The temperature calculator calculates temperature data of a display panel based on input image data. The temperature comparator receives the temperature data and a target temperature and compares a temperature of the display panel with the target temperature to generate temperature change data. The operator receives the temperature data and the temperature change data and generates operation data based on the temperature data and the temperature change data. The screen saver data generator receives the operation data and generates screen saver data based on the operation data. The screen saver controller adjusts a luminance of the display panel based on the screen saver data when operating in a first mode.

公开(公告)号：US20200234630A1

公开(公告)日：2020-07-23

申请号：US16840837

申请日：2020-04-06

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  HYEON-DO PARK

IPC: G09G3/20 ,  G09G3/36

Abstract: A display apparatus includes a display panel including a plurality of first gate lines, a first gate driver connected to first ends of the plurality of first gate lines, a second gate driver connected to second ends of the plurality of first gate lines, a feedback line connected adjacent to the first end of one of the plurality of first gate lines, and a gate delay sensing circuit connected to the feedback line. The gate delay sensing circuit includes a time-to-digital converter and a digital comparator. The time-to-digital converter converts an activation time of a feedback gate signal into a digital activation value. The feedback gate signal is retrieved from the feedback line. The digital comparator generates a digital delay value based on the digital activation value. The digital delay value indicates resistive-capacitive (“RC”) delay of the one of the plurality of first gate lines connected to the feedback line.

公开(公告)号：US20240062726A1

公开(公告)日：2024-02-22

申请号：US18141839

申请日：2023-05-01

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  MYOUNGSEOP SONG

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/0278 ,  G09G2300/0852 ,  G09G2320/0271 ,  G09G2320/0233

Abstract: A display device includes a display panel, a driving controller, a gate driver and a data driver. The display panel includes pixels. The driving controller determines a kickback compensation value of a gate signal according to at least one of a grayscale value of an input image data and a distance from a scan start point of the gate signal. The gate driver is configured to generate the gate signal based on the kickback compensation value and to output the gate signal to the display panel. The data driver is configured to output a data voltage to the display panel.

公开(公告)号：US20230419901A1

公开(公告)日：2023-12-28

申请号：US18136469

申请日：2023-04-19

Applicant: Samsung Display Co., LTD.

Inventor： KIHYUN PYUN ,  SEUNG-WOON SHIN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2330/028 ,  G09G2330/021 ,  G09G2354/00

Abstract: A display device includes a display panel which displays an image based on output image data converted from input image data, an input voltage controller which determines a maximum scale factor and a minimum scale factor based on a power control mode set by a user, calculates a maximum driving voltage based on the maximum scale factor and the minimum scale factor, and calculates an optimal voltage based on the maximum driving voltage, a power supply which generates an input voltage based on the optimal voltage, and a driving voltage generator which generates a driving voltage provided to the display panel using the input voltage.

公开(公告)号：US20230386385A1

公开(公告)日：2023-11-30

申请号：US18128142

申请日：2023-03-29

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  JANG-MI LEE

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G3/2096 ,  G09G2330/028 ,  G09G2320/0242 ,  G09G2330/025

Abstract: A display apparatus includes a display panel, a power voltage generator, a current sensor, a driving controller and a data driver. The power voltage generator is configured to generate a power voltage and output the power voltage to the display panel. The current sensor is configured to sense a panel current of the display panel and output an overcurrent signal based on the panel current being greater than a threshold value. The driving controller is configured to generate a compensation value based on the overcurrent signal and generate a data signal to which the compensation value is applied. The data driver is configured to generate a data voltage based on the data signal and output the data voltage to the display panel.

公开(公告)号：US20230368743A1

公开(公告)日：2023-11-16

申请号：US18088715

申请日：2022-12-26

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  KYOUNGHO LIM

IPC: G09G3/3291 ,  G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3291 ,  G09G3/32 ,  G09G3/3688 ,  G09G2320/0276 ,  G09G2310/027 ,  G09G2360/16 ,  G09G2320/0673

Abstract: A display device is disclosed that includes a display panel, a controller, and a data driver. The controller is configured to determine first luminances with respect to a reference grayscale in a second frame when the reference grayscale is displayed in the second frame after the reference grayscale is displayed in a first frame. The controller is configured to determine second luminances with respect to the reference grayscale in the second frame when the reference grayscale is displayed in the second frame after a minimum grayscale is displayed in the first frame. The controller is further configured to temporally and spatially arrange first data corresponding to the reference grayscale and second data corresponding to the minimum grayscale to generate a data signal. And, the controller is configured to drive the display panel with a digital driving method in a first grayscale section, and drive the display panel with an analog driving method in a second grayscale section. The data driver is configured to generate a data voltage based on the data signal.