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    Display apparatus and method of driving display panel using the same
    32.
    发明授权
    Display apparatus and method of driving display panel using the same 有权

    公开(公告)号：US11527204B2

    公开(公告)日：2022-12-13

    申请号：US17524649

    申请日：2021-11-11

    Applicant: Samsung Display Co., Ltd.

    Inventor： Se Hyuk Park ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee ,  Jae Keun Lim

    IPC: G09G3/36 ,  G09G3/3258 ,  G09G3/3291 ,  H01L27/32 ,  H01L29/786 ,  H01L27/12

    Abstract: A display apparatus includes a display panel, a first gate driver, a second gate driver, a third gate driver, and a data driver. The display apparatus is operable in a low frequency driving mode, and the low frequency driving mode includes a writing frame and a holding frame. At least one of gate power voltages used to generate a first gate signal, a second gate signal, and an emission signal has a first voltage level in the writing frame of the low frequency driving mode and a second voltage level in the holding frame of the low frequency driving mode. The data voltage is applied to the pixel in the writing frame of the low frequency driving mode. The data voltage applied to the pixel in the writing frame of the low frequency driving mode is maintained in the holding frame of the low frequency driving mode.

    Display device and driving method thereof
    34.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US11462172B2

    公开(公告)日：2022-10-04

    申请号：US17122505

    申请日：2020-12-15

    Applicant: Samsung Display Co., Ltd.

    Inventor： Se Hyuk Park ,  Ji Youn Kim ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee ,  Jae Keun Lim

    IPC: G09G3/32 ,  G09G3/3266

    Abstract: A display device includes: a pixel part including a plurality of pixels; a first scan driver to provide a first scan signal to each of the pixels; and an initialization controller to control the first scan driver. Each of the pixels includes a pixel circuit including a plurality of transistors, and a light emitting element connected to the pixel circuit, an anode of the light emitting element is to be initialized to a first initialization voltage in response to the first scan signal having a gate-on level, and the initialization controller is to determine whether to provide the first scan signal having the gate-on level to each of the pixels for each frame.

    Display apparatus and method of driving display panel using the same
    35.
    发明授权
    Display apparatus and method of driving display panel using the same 有权

    公开(公告)号：US11462145B2

    公开(公告)日：2022-10-04

    申请号：US16992011

    申请日：2020-08-12

    Applicant: Samsung Display Co., Ltd.

    Inventor： Suk Hun Lee ,  Sangan Kwon ,  Hong Soo Kim ,  Jin Young Roh ,  Sehyuk Park ,  Hyo Jin Lee

    IPC: G09G3/20

    Abstract: A display apparatus includes a display panel displaying an image based on an input image data, a data driver outputting a data voltage to a data line, and a driving controller determining a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for grayscale values corresponding to the input image data, a voltage drop determiner configured to adjust a flicker value of the flicker values based on a voltage drop of the display panel, a still image determiner configured to determine whether the input image data is a still image or a video image, and a driving frequency determiner configured to determine the driving frequency of the display panel using the flicker value based on the input image data being the still image.

    Pixel of an organic light emitting diode display device, and organic light emitting diode display device
    36.
    发明授权
    Pixel of an organic light emitting diode display device, and organic light emitting diode display device 有权

    公开(公告)号：US11410599B2

    公开(公告)日：2022-08-09

    申请号：US17204213

    申请日：2021-03-17

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sehyuk Park ,  Jae Keun Lim ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee

    IPC: G09G3/3225 ,  G09G3/3233 ,  H01L27/32

    Abstract: A pixel of an organic light emitting diode display device includes a capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor and an organic light emitting diode. The third transistor includes first and second sub-transistors which are coupled to each other in series between a drain of the first transistor and a gate node, and a fourth transistor includes third and fourth sub-transistors which are coupled to each other in series between a line of an initialization voltage and the gate node. The eighth transistor applies a reference voltage to a first node between the first and second sub-transistors in response to an emission signal, and a ninth transistor applies the reference voltage to a second node between the third and fourth sub-transistors in response to the emission signal.

    Display apparatus and method of driving display panel using the same
    37.
    发明授权
    Display apparatus and method of driving display panel using the same 有权

    公开(公告)号：US11348508B2

    公开(公告)日：2022-05-31

    申请号：US16989073

    申请日：2020-08-10

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sehyuk Park ,  Hong Soo Kim ,  Sangan Kwon ,  Jinyoung Roh ,  Hyo Jin Lee

    IPC: G09G3/20 ,  G09G3/3291

    Abstract: A display apparatus includes a display panel, a data driver and a driving controller. The display panel is configured to display an image based on input image data. The data driver is configured to output a data voltage to the display panel. The driving controller includes a frequency adjuster circuit configured to determine a driving frequency of the display panel, and a dithering circuit configured to change a grayscale value of the input image data according to frames. The frequency adjuster circuit is configured to determine the driving frequency of the display panel based on the input image data and based on whether the dithering part is activated.

    Display device
    39.
    发明授权
    Display device 有权

    公开(公告)号：US11176876B1

    公开(公告)日：2021-11-16

    申请号：US17151601

    申请日：2021-01-18

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyo Jin Lee ,  Hong Soo Kim ,  Jin Young Roh ,  Se Hyuk Park ,  Jae Keun Lim

    IPC: G09G3/32

    Abstract: A display device includes the following elements: a display panel including a first pixel emitting first-color light, a second pixel emitting second-color light, and a third pixel emitting third-color light; a controller generating generated image data based on input image data according to a driving frequency of the display panel, and generating output image data using the generated image data; and a data driver supplying data signals to the display panel based on the output image data. The input image data includes first, second, and third grayscales for the first, second, and third pixels, respectively. The generated image data includes first, second, and third generated grayscales for the first, second, and third pixels, respectively, with different ratios to the first, second, and third grayscales, respectively.

    Display apparatus and method of driving the same
    40.
    发明授权
    Display apparatus and method of driving the same 有权

    公开(公告)号：US10825382B2

    公开(公告)日：2020-11-03

    申请号：US16696368

    申请日：2019-11-26

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hong Soo Kim ,  Bon-Seog Gu ,  Woomi Bae

    IPC: G09G3/32

    Abstract: A display apparatus includes a display panel and a power voltage generator. The display panel includes pixel circuits including a first light emitting element and a second light emitting element. The power voltage generator applies a high power voltage to first electrodes of the first light emitting element and the second light emitting element, a first low power voltage to a second electrode of the first light emitting element and a second low power voltage to a second electrode of the second light emitting element. The high power voltage has high level, the first low power voltage has low level and the second low power voltage has high level during an emission duration of a first frame. The high power voltage has the high level, the first low power voltage has high level and the second low power voltage has low level during an emission duration of a second frame.

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