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：US20240233618A9

公开(公告)日：2024-07-11

申请号：US18230668

申请日：2023-08-07

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：US20210319740A1

公开(公告)日：2021-10-14

申请号：US17149610

申请日：2021-01-14

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  WONJIN SEO ,  EUNJIN CHOI

IPC: G09G3/20

Abstract: A driving controller set includes a net power control setter, a data clamper, a data line, and a data driver. The net power control setter may determine a first scale factor for adjusting a grayscale value of (N+1)-th frame data based on a load of N-th frame data and a net power control reference value. N is an integer equal to or greater than two. The data clamper may determine a second scale factor for adjusting a grayscale value of the N-th frame data based on a load of (N−1)-th frame data and the N-th frame data. A data signal may be generated using the first scale factor and/or the second scale factor. The data line may include a conductive material. The data driver may convert the data signal into a data voltage and may output the data voltage to the data line.

公开(公告)号：US20230298528A1

公开(公告)日：2023-09-21

申请号：US18098695

申请日：2023-01-19

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3258 ,  G09G3/32

CPC classification number: G09G3/3258 ,  G09G3/32 ,  G09G2330/08 ,  G09G2330/04

Abstract: Disclosed is a display device including a display panel, a voltage generator, a current detector, and a current controller. The display panel includes a pixel for receiving a driving voltage. The voltage generator generates the driving voltage, determines a voltage level of the driving voltage based on a voltage control signal, and performs a protection operation in response to a protection signal. The current detector detects a driving current of the display panel and outputs a current signal corresponding to the detected driving current. The current controller includes a current comparison unit that generates a result signal by comparing a present current level of the current signal from the current detector to a previous current level and a protection operating unit that receives the result signal and outputs the protection signal based on a change in the load and a difference between the target current and the current signal.

公开(公告)号：US20220148501A1

公开(公告)日：2022-05-12

申请号：US17361840

申请日：2021-06-29

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  MINYOUNG PARK ,  EUNJIN CHOI

IPC: G09G3/3233

Abstract: A display device includes a display panel which displays an image, a current compensator and a panel driver. The current compensator calculates a load based on input image data and compensates the input image data to output compensation image data having a target current corresponding to the load. The panel driver drives the display panel based on the compensation image data. The current compensator calculates the load for the input image data based on a combination of load weights calculated by different variables.

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：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：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：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：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.