公开(公告)号：US20220076621A1

公开(公告)日：2022-03-10

申请号：US17335501

申请日：2021-06-01

Applicant: Samsung Display Co., Ltd.

Inventor： WONJIN SEO ,  EUNJIN CHOI ,  KIHYUN PYUN

IPC: G09G3/3208 ,  H01L27/32

Abstract: An electronic device includes a display panel which includes a plurality of light emitting elements and in which a plurality of areas is defined based on the plurality of light emitting elements, a compensation unit which calculates compensation values for image data provided to each of the plurality of areas, and a control unit which controls the output of the image data provided to the display panel based on the compensation values and the image data, where the control unit may include a correction unit which outputs a correction ratio of each of the plurality of areas based on the compensation values and a comparison unit which determines whether an input current of the image data is in a normal range based on the correction ratio.

公开(公告)号：US20250140154A1

公开(公告)日：2025-05-01

申请号：US18924110

申请日：2024-10-23

Applicant: Samsung Display Co., LTD.

Inventor： KIHYUN PYUN ,  Jungeon An

IPC: G09G3/20 ,  G01R19/25

Abstract: A display device includes a display panel including a plurality of pixels, a power management circuit which supplies a power supply voltage to the plurality of pixels through a power supply line, a current sensing circuit which generates a digital current code by sensing a panel current flowing through the power supply line, and a controller which determines a peak gray level and a panel load by analyzing input image data, determines a voltage level of the power supply voltage based on the peak gray level and the panel load, and sets a conversion time, during which the panel current is converted into a digital current code, based on the voltage level of the power supply voltage.

公开(公告)号：US20240428742A1

公开(公告)日：2024-12-26

申请号：US18750577

申请日：2024-06-21

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SEUNGHO PARK ,  SUNG-MO YANG

IPC: G09G3/3275 ,  G09G3/32

Abstract: A driving controller includes an overcurrent load calculator calculating a load of an input image signal, comparing the load and a reference load, and outputting a first signal corresponding to a first comparison result, an overcurrent reference controller analyzing a grayscale of the input image signal and outputting one of a first reference current signal corresponding to the grayscale and a second reference current signal, whose current level is higher than that of the first reference current signal, as a reference current signal, a current sensor receiving a feedback current signal, comparing a current level of the feedback current signal and a current level of the reference current signal, and outputting a second signal corresponding to a second comparison result, and a voltage controller outputting a voltage control signal for adjusting a voltage level of a driving voltage, based on the first signal and the second signal.

公开(公告)号：US20240135865A1

公开(公告)日：2024-04-25

申请号：US18230668

申请日：2023-08-06

Applicant: Samsung Display Co., Ltd.

Inventor： EUNJIN CHOI ,  GEONHWI PARK ,  JANG-MI LEE ,  KIHYUN PYUN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0247 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device includes a display panel displaying an image based on output image data, a voltage curve controller generating a converted peak luminance, a converted full white luminance, a converted peak grayscale, and a converted full white grayscale from a reference peak luminance and a reference full white luminance based on a gain mode and a gain value, and generating converted voltage curves including a first converted voltage curve from a first reference voltage curve based on the converted peak grayscale and the converted full white grayscale, and a driving voltage controller generating a driving voltage from the converted voltage curves based on a load and a maximum grayscale value of input image data. A voltage of the first converted voltage curve with respect to a peak grayscale is equal to a voltage of the first reference voltage curve with respect to the converted peak grayscale.

公开(公告)号：US20230401989A1

公开(公告)日：2023-12-14

申请号：US18172391

申请日：2023-02-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： GEONHWI PARK ,  KIHYUN PYUN

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G3/2096 ,  G09G2360/16 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/0276

Abstract: A display device may include a display panel including pixels, and a display panel driver. The display panel driver may receive an input image, detect a first pattern from input image data of the input image, determine a luminance weight for each color based on a luminance of the input image of the first pattern and a luminance of a reference image of a second pattern, apply, in response to detecting of the first pattern, the luminance weight to data voltages to determine compensation data voltages, and apply the compensation data voltages to the pixels.

公开(公告)号：US20230360588A1

公开(公告)日：2023-11-09

申请号：US18062863

申请日：2022-12-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  JANG-HOON KWAK

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2320/0233

Abstract: A display device includes a first source printed circuit board connected to a control printed circuit board through a cable, a second source printed circuit board connected to the first source printed circuit board through a flexible printed circuit board, a display panel connected to the first source printed circuit board and the second source printed circuit board through a connection part, and a timing controller determining predicted power currents based on input image data, determining a target gain based on the predicted power currents and a maximum allowable power current of the flexible printed circuit board, and correcting the input image data corresponding to a gain reduction region of the display panel based on the target gain. Accordingly, the display device may reduce a power current flowing through the flexible printed circuit board and may include a flexible printed circuit board including a small number of pins.

公开(公告)号：US20230317005A1

公开(公告)日：2023-10-05

申请号：US18104468

申请日：2023-02-01

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  Min-Soo Choi

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/027 ,  G09G2330/028 ,  G09G2320/0276 ,  G09G2310/08 ,  G09G2320/045

Abstract: A display device including: a display panel; a current compensation circuit executing a current compensation operation in which a load is calculated based on input image data, and output compensation image data is generated by compensating for the input image data based on the load; a data driver converting the compensation image data into a data voltage based on a gamma reference voltage and a data driving voltage, and outputting the data voltage; a current sensing circuit sensing a driving current of the display panel and comparing the driving current with a preset reference current to output a protection signal; a voltage generator generating a driving voltage, the gamma reference voltage, and the data driving voltage; and a voltage control circuit generating a first voltage control signal to control a first target compensation value of the gamma reference voltage or the data driving voltage in response to the protection signal.

公开(公告)号：US20230316978A1

公开(公告)日：2023-10-05

申请号：US18109106

申请日：2023-02-13

Applicant: Samsung Display Co., Ltd.

Inventor： GEONHWI PARK ,  HYUNJOO SEO ,  KIHYUN PYUN

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G3/2096 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2360/16

Abstract: A method of operating a display apparatus includes the following steps: calculating a first color reference luminance ratio, a second color reference luminance ratio, and a third color reference luminance ratio for a reference grayscale value; calculating first color target luminance ratios, second color target luminance ratios, and third color target luminance ratios for adjustment target grayscale values; generating first adjustment values, second adjustment values, and third adjustment values based on the first, second, and third color reference luminance ratios and the first, second, and third color target luminance ratios; performing gamma conversions of first, second and third colors using the first, second, and third adjustment values for the adjustment target grayscale values; using results of the gamma conversions to generate data voltages; and using the data voltage and a display panel of the display apparatus to emit or transmit light for displaying an image.

公开(公告)号：US20230252944A1

公开(公告)日：2023-08-10

申请号：US18075759

申请日：2022-12-06

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-IN KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2330/028 ,  G09G2360/16 ,  G09G2330/021 ,  G09G2300/0842

Abstract: A display device includes a display panel including a plurality of pixels, a power supply which provides a driving voltage to the pixels, and a controller which outputs a first signal by comparing a sensing driving current generated by sensing driving currents flowing through the pixels with a limit current, outputs a second signal by comparing a load of previous frame data with a limit load, and outputs a driving voltage control signal for controlling the driving voltage to the power supply based on the first signal and the second signal.

公开(公告)号：US20230109819A1

公开(公告)日：2023-04-13

申请号：US18066351

申请日：2022-12-15

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.