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.

公开(公告)号：US20230033713A1

公开(公告)日：2023-02-02

申请号：US17874232

申请日：2022-07-26

Applicant: Samsung Display Co, LTD.

Inventor： KIHYUN PYUN ,  HEESOOK PARK

IPC: G09G3/20

Abstract: A screen saver controller including a load calculator configured to generate load data of an image represented by input image data, a maximum gray level calculator configured to generate maximum gray level data of the image represented by the input image data, and a screen saver data generator configured to determine a gain of a screen saver mode based on the load data and the maximum gray level data when the screen saver mode is operated and to generate screen saver data based on the input image data and the gain.

公开(公告)号：US20220406235A1

公开(公告)日：2022-12-22

申请号：US17582458

申请日：2022-01-24

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  WONJIN SEO

IPC: G09G3/20

Abstract: A display apparatus include a display panel and a display panel driver. The display panel includes a panel block. The display panel driver senses a driving current to generate a sensing current, generates a temperature weight of the panel block based on the sensing current and location information of a circuit component, generates a load value of the panel block based on input image data, and generates a predicted temperature of the panel block based on the temperature weight of the panel block and the load value of the panel block.

公开(公告)号：US20220028332A1

公开(公告)日：2022-01-27

申请号：US17321061

申请日：2021-05-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： EUNJIN CHOI ,  WONJIN SEO ,  KIHYUN PYUN

IPC: G09G3/3208 ,  G06F1/3218 ,  H04N5/63

Abstract: A display device includes a display panel including a plurality of panel blocks, a block load calculator which calculates block loads of the panel blocks based on an input image data and determines a maximum block load among the block loads, a block load comparing part which generates a first output image data based on the input image data when the maximum block load is less than a critical block load, and a first load controller which generates a first power control curve and generates a second output image data based on the input image data when the maximum block load is greater than or equal to the critical block load.