公开(公告)号：US20230326416A1

公开(公告)日：2023-10-12

申请号：US18208074

申请日：2023-06-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Kook Park ,  Dong Wan Park ,  Do Hyun Kang

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2320/0626

Abstract: A display device includes at least a first luminance range and a second luminance range which includes a luminance different from the first luminance range. In a boundary area of a second dimming range corresponding to the second luminance range and which is adjacent to a first dimming range corresponding to the first luminance range, a reference luminance emitted from a pixel is maintained as a first constant luminance value, and an off-duty number, which is the number of periods in which the pixel is turned off during one frame, is gradually increased by an emission control signal.

公开(公告)号：US12125445B2

公开(公告)日：2024-10-22

申请号：US18208074

申请日：2023-06-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Kook Park ,  Dong Wan Park ,  Do Hyun Kang

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2320/0626

Abstract: A display device includes at least a first luminance range and a second luminance range which includes a luminance different from the first luminance range. In a boundary area of a second dimming range corresponding to the second luminance range and which is adjacent to a first dimming range corresponding to the first luminance range, a reference luminance emitted from a pixel is maintained as a first constant luminance value, and an off-duty number, which is the number of periods in which the pixel is turned off during one frame, is gradually increased by an emission control signal.

公开(公告)号：US11710460B2

公开(公告)日：2023-07-25

申请号：US17465628

申请日：2021-09-02

Applicant: Samsung Display Co., LTD.

Inventor： Jung Kook Park ,  Dong Wan Park ,  Do Hyun Kang

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2320/0626

Abstract: A display device includes at least a first luminance range and a second luminance range which includes a luminance different from the first luminance range. In a boundary area of a second dimming range corresponding to the second luminance range and which is adjacent to a first dimming range corresponding to the first luminance range, a reference luminance emitted from a pixel is maintained as a first constant luminance value, and an off-duty number, which is the number of periods in which the pixel is turned off during one frame, is gradually increased by an emission control signal.

公开(公告)号：US10170054B2

公开(公告)日：2019-01-01

申请号：US14691039

申请日：2015-04-20

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hun Park ,  Dong Wan Park ,  Myoung Seop Song

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An organic light emitting display that defines a plurality of pixels arranged in a matrix form as a plurality of pixel row groups, each of which includes the same number of pixel rows and individually drives the respective pixel row groups. The organic light emitting display includes a display unit including the plurality of pixels, a plurality of data lines, and a plurality of scan lines: a scan driving unit configured to apply scan signals to the plurality of pixels; a data driving unit configured to apply data voltages that are provided to the plurality of pixels to a first output line; and a data distribution unit configured to selectively connect at least two data lines that are continuously arranged to the first output line according to demultiplexing signals. The demultiplexing signals that correspond to the pixel rows included in the respective pixel row groups have different pulse widths.

公开(公告)号：US11189229B2

公开(公告)日：2021-11-30

申请号：US16681551

申请日：2019-11-12

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Kook Park ,  Dong Wan Park ,  Sang Min Lim

IPC: G09G3/3258 ,  G09G3/3225 ,  G09G3/3208 ,  G09G3/36

Abstract: A display device includes: a display panel including a plurality of pixels; a data driver configured to supply a black voltage to the display panel; and a controller configured to: set an initial driving power voltage of the display panel; decide a bright spot voltage of the display panel while the data driver is supplying the black voltage to the display panel; and set any one of the bright spot voltage and the initial driving power voltage as a final driving power voltage.

公开(公告)号：US10290258B2

公开(公告)日：2019-05-14

申请号：US15338481

申请日：2016-10-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Hun Park ,  Dong Wan Park ,  Jae Won Kim ,  Sang Jin Pak

IPC: G09G3/30 ,  G09G3/3241 ,  G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

Abstract: An organic light emitting display device includes a data driver, a pixel unit, a timing controller, and a power generator. The data driver generates data signals to be supplied to data lines based on gamma voltages. The pixel unit controls the amount of current flowing from a first power supply to a second power supply in each of a plurality of pixels based on the data signals and a reference power voltage. The timing controller limits the maximum brightness of the pixel unit corresponding to a plurality of dimming levels. The first power generator changes the voltage of the first power supply corresponding to the dimming levels.