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    DISPLAY DEVICE, AND METHOD OF DETERMINING A POWER SUPPLY VOLTAGE
    1.
    发明申请
    DISPLAY DEVICE, AND METHOD OF DETERMINING A POWER SUPPLY VOLTAGE 有权

    公开(公告)号：US20210065623A1

    公开(公告)日：2021-03-04

    申请号：US15930965

    申请日：2020-05-13

    Applicant: Samsung Display Co., Ltd.

    Inventor： Seokha HONG ,  Sang Myeon HAN ,  Jae Hoon LEE

    IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3275

    Abstract: A display device includes a display panel including first, second, and third color sub-pixels, a data driver, a scan driver, a power supply to provide a power supply voltage to the display panel, and a controller. The controller includes a pure color index calculator to calculate first through third pure color indexes of first through third sub-pixel data, a pure color index histogram generator to generate first through third high pure color index histograms, and first through third low pure color index histograms, a histogram analyzer to determine first through third effective maximum gray levels for the first through third color sub-pixels according to the first through third high pure color index histograms and the first through third low pure color index histograms, and a power supply voltage controller to determine a voltage level of the power supply voltage according to the first through third effective maximum gray levels.

    PREDICTIVE DISPLAY DEVICE AND DRIVING METHOD THEREOF
    3.
    发明公开
    PREDICTIVE DISPLAY DEVICE AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20240221622A1

    公开(公告)日：2024-07-04

    申请号：US18495192

    申请日：2023-10-26

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Byoung Kwan AN ,  Seung Ho PARK ,  Sang Myeon HAN

    IPC: G09G3/32

    CPC classification number: G09G3/32 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2330/021

    Abstract: A display device includes: pixels that receive data voltages corresponding to output grayscales; a sensing circuit that senses electrical states of the pixels to provide sensing information; and a grayscale converter that generates the output grayscales with respect to the pixels based on input grayscales and the sensing information, wherein the grayscale converter predicts a temperature of at least one of the pixels based on the sensing information, calculates a current control amount for the at least one of the pixels based on the predicted temperature and the input grayscales, and calculates the output grayscales for the at least one of the pixels based on the current control amount and the input grayscales.

    DISPLAY DEVICE
    4.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20230138436A1

    公开(公告)日：2023-05-04

    申请号：US17948787

    申请日：2022-09-20

    Applicant: Samsung Display Co., Ltd.

    Inventor： Jae Hoon LEE ,  Kyoung Ho LIM ,  Seung Ho PARK ,  Hee Sook PARK ,  Sang Myeon HAN

    IPC: G09G3/32

    Abstract: A display device is disclosed that includes pixels, a memory, and a degradation compensator. The pixels include light emitting elements. The memory is operable to store degradation information including degradation degrees of the light emitting elements. The degradation compensator is operable to receive the degradation information and generate output grayscales by changing each of input grayscales of the pixels in proportion to each of the degradation degrees. The degradation compensator includes a degradation information changer for changing the degradation information by decreasing a degradation degree having a variation greater than a threshold value among variations of the degradation degrees.

    IMAGE STICKING COMPENSATION DEVICE AND DISPLAY DEVICE HAVING THE SAME
    5.
    发明申请
    IMAGE STICKING COMPENSATION DEVICE AND DISPLAY DEVICE HAVING THE SAME 有权

    公开(公告)号：US20220223092A1

    公开(公告)日：2022-07-14

    申请号：US17523218

    申请日：2021-11-10

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： JAE HOON LEE ,  Seung Ho PARK ,  Jin Ho LEE ,  Sang Myeon HAN

    IPC: G09G3/20

    Abstract: An image sticking compensation device includes: a deterioration calculator which calculates deterioration data of a current frame based on input image data and sensing frequency information which are received from a timing controller; an accumulator which accumulates the deterioration data and generates age data in which the deterioration data is accumulated; and a compensator which determines a grayscale compensation value corresponding to the age data and an input grayscale value of the input image data, and outputs age compensation data by applying the grayscale compensation value to the input image data. The sensing frequency information includes a frequency of the current frame, and the deterioration data varies in accordance with the frequency of the current frame.

    DISPLAY DEVICE
    6.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20250157398A1

    公开(公告)日：2025-05-15

    申请号：US18753391

    申请日：2024-06-25

    Applicant: Samsung Display Co., LTD.

    Inventor： Nam Jae LIM ,  Seong Jun KIM ,  Da Ye MOON ,  Kyoung Ho LIM ,  Sang Myeon HAN

    IPC: G09G3/3208

    Abstract: A display device comprises pixels arranged in a display area of a display panel, and a display driver determining whether image data indicates still image characteristics or moving image characteristics and controlling a supply timing of data voltages and pixel driving control signals supplied to the pixels based on the determination result, wherein the display driver selectively adjusts a driving frequency for driving the pixels and a level of a high-potential voltage supplied to the pixels based on as result of grayscale analysis of the image data.

    DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    7.
    发明申请
    DISPLAY DEVICE AND METHOD OF DRIVING THE SAME 有权

    公开(公告)号：US20240412681A1

    公开(公告)日：2024-12-12

    申请号：US18811239

    申请日：2024-08-21

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Joon Hyeok JEON ,  Byoung Kwan AN ,  Sang Myeon HAN ,  Chang Hun KIM ,  Seung Ho PARK ,  Seok Gyu BAN ,  Nam Jae LIM

    IPC: G09G3/20 ,  G09G3/3233

    Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.

    DISPLAY DEVICE
    10.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20230030225A1

    公开(公告)日：2023-02-02

    申请号：US17719289

    申请日：2022-04-12

    Applicant: Samsung Display Co., LTD.

    Inventor： Jae Hoon LEE ,  Kyung Sik JOO ,  Sang Myeon HAN

    IPC: G09G3/20

    Abstract: A display device includes: a display panel including a plurality of pixels; a deterioration compensator that outputs compensation data based on a lifetime value of the plurality of pixels and an input grayscale of input image data; a scan driver that supplies a scan signal to the display panel; and a data driver that supplies a data signal corresponding to the compensation data to the display panel. The deterioration compensator includes a grayscale-current converter that calculates an input current corresponding to the input grayscale.

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