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    DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    1.
    发明公开
    DISPLAY DEVICE AND METHOD OF DRIVING THE SAME 审中-公开

    公开(公告)号：US20240078953A1

    公开(公告)日：2024-03-07

    申请号：US18230176

    申请日：2023-08-04

    申请人： Samsung Display Co., Ltd.

    发明人： KYUNG-HUN LEE

    IPC分类号： G09G3/20 ,  G09G3/32 ,  G09G3/3233

    CPC分类号： G09G3/2044 ,  G09G3/2077 ,  G09G3/32 ,  G09G3/3233 ,  G09G2310/027 ,  G09G2310/0272

    摘要： A display device may include a pixel unit which includes pixels, a driver which drives the pixel unit based on image data, a voltage generator which provides a driving voltage to the pixel unit, and a global current manager including a compensation voltage generator which receives a comparison result between a sensing current of the pixel unit and a reference current range generated based on the image data from a comparator and generates a compensation voltage for controlling the driving voltage, and a compensation data generator which generates compensation data for controlling grayscale values of the image data in a dithering method based on the comparison result.

    Display apparatus and a method of driving the same
    2.
    发明授权
    Display apparatus and a method of driving the same 有权

    公开(公告)号：US10008144B2

    公开(公告)日：2018-06-26

    申请号：US15162178

    申请日：2016-05-23

    申请人： SAMSUNG DISPLAY CO., LTD.

    发明人： Yun-Mi Kim ,  Ki-Hyun Pyun

    IPC分类号： G09G3/20 ,  G09G3/36 ,  G09G5/02 ,  G09G5/06 ,  G06K9/62

    CPC分类号： G09G3/2018 ,  G09G3/2007 ,  G09G3/2077 ,  G09G3/2092 ,  G09G3/3611 ,  G09G2310/0248 ,  G09G2310/08 ,  G09G2320/0242

    摘要： A display apparatus includes a display panel, a memory, a bit-data convertor, a switch, and a gate driver. The display panel includes pixels. Each pixel is connected to one of the data lines and one of the gate lines. The memory stores a plurality of image data corresponding to a frame period. The bit-data convertor determines a plurality of bit data. Each of the bit data corresponds to a degree of change between adjacent image data among the plurality of image data, obtains a sum of the bit data, and outputs the sum of the bit data as a total count bit data value. The switch outputs a first pulse control signal corresponding to the total count bit data value. The gate driver generates a gate signal based on the first pulse control signal, and to output the gate signal to one of the gate lines.

    LED DRIVING CIRCUIT AND METHOD
    3.
    发明申请
    LED DRIVING CIRCUIT AND METHOD 审中-公开

    公开(公告)号：US20170270845A1

    公开(公告)日：2017-09-21

    申请号：US15261117

    申请日：2016-09-09

    申请人： MY-SEMI INC.

    发明人： CHUN-TING KUO ,  CHENG-HAN HSIEH

    IPC分类号： G09G3/20 ,  G09G3/32

    CPC分类号： G09G3/2025 ,  G09G3/2077 ,  G09G3/32 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2360/18

    摘要： A LED driving circuit comprises a high bit driving circuit, a low bit driving circuit and a driving output terminal. The high bit driving circuit coupled to a high bit signal of the grayscale signal determines a first current continuously driven during a grayscale period according to the value of the high bit signal. The first current is invariant during the grayscale period. The low bit driving circuit coupled to a low bit signal of the grayscale signal determines a second current driven in at least two time intervals during the grayscale period according to the value of the low bit signal. The driving output terminal coupled to the high bit driving circuit and the low bit driving circuit outputs the driving current added by the first current and the second current. Accordingly, the LED display can be improved with higher refresh rate and/or better uniformity in low grayscale.

    Display apparatus
    9.
    发明授权
    Display apparatus 有权
    显示装置

    公开(公告)号：US09129570B2

    公开(公告)日：2015-09-08

    申请号：US14050953

    申请日：2013-10-10

    申请人： Samsung Display Co., Ltd.

    发明人： Jaehyun Cho ,  Sung-Jin Hong ,  Jae-Byung Park

    IPC分类号： G09G3/36 ,  G09G3/20

    CPC分类号： G09G3/3607 ,  G09G3/2077 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/0235

    摘要： A display apparatus, includes: a display panel including: gate lines extended in a first direction, data lines extended in a second direction, sub-pixels, and a first color filter, a second color filter, and a substantially colorless portion sequentially arranged in the first direction in one-to-one correspondence with the sub-pixels; and a light providing unit configured to supply a first color of light and a second color of light different from the first color of light to the display panel in association with a first sub-frame and a second sub-frame, respectively. At least some of the sub-pixels are grouped into a sub-pixel group including an “a”דb” matrix arrangement, the sub-pixel group being connected to an amount “a” of the gate lines and an amount “b” of the data lines, and “a” and “b” are positive integers greater than zero and “b” is greater than “a.”

    摘要翻译： 一种显示装置，包括：显示面板，包括：沿第一方向延伸的栅极线，沿第二方向延伸的数据线，子像素和第一滤色器，第二滤色器和基本上无色的部分， 与子像素一一对应的第一方向; 以及光提供单元，被配置为分别与第一子帧和第二子帧相关联地将与第一颜色的光不同的第一颜色的光和第二颜色的光提供给显示面板。 至少一些子像素被分组为包括“a”דb”矩阵排列的子像素组，子像素组连接到栅极线的量“a”，并且量“b “数据线，”a“和”b“是大于零的正整数，”b“大于”a“。

    Display drive with permutation and superposition gray-level control
    10.
    发明授权
    Display drive with permutation and superposition gray-level control 有权
    显示驱动器的排列和叠加灰度级控制

    公开(公告)号：US09019322B2

    公开(公告)日：2015-04-28

    申请号：US13517929

    申请日：2010-12-21

    申请人： Tiefu Ding ,  Ruiguang Wang ,  Xifeng Zheng ,  Feng Chang

    发明人： Tiefu Ding ,  Ruiguang Wang ,  Xifeng Zheng ,  Feng Chang

    IPC分类号： G09G5/10 ,  G09G3/20 ,  G09G3/32

    CPC分类号： G09G3/2007 ,  G09G3/2018 ,  G09G3/2077 ,  G09G3/32 ,  G09G2310/021 ,  G09G2310/0213

    摘要： A display driver circuitry with permutation and superposition gray-level control comprises a gray-level controller. The controller may comprise a permutation and superposition adder configured to divide N-bit gray-level data G into M most significant bits, serving as a superposition reference GH, and (N−M) least significant bits, serving as a superposition increment GL, and to superpose superposition values Xi onto GH to derive pieces of scan data Gi for S scan operations; an overflow bit setting unit configured to set an overflow bit F; and an output unit configured to output the scan data Gi. A display driven this way has an improved refreshing frequency with the same gray-level reproduction ability as PWM-based schemes. Further, the duration of each scan operation, or scan period, is constant, resulting in convenience in software implementations. Furthermore, the pulse width representative of the gray-level value is determined by superposition of the scan operations.

    摘要翻译： 具有置换和重叠灰度级控制的显示驱动器电路包括灰度级控制器。 控制器可以包括置换和叠加加法器，被配置为将N位灰度级数据G划分为M个最高有效位，用作叠加参考GH，和（N-M）个最小有效位用作叠加增量GL， 并且将叠加值Xi叠加到GH上以导出用于S扫描操作的扫描数据Gi; 溢出位设置单元，被配置为设置溢出位F; 以及输出单元，被配置为输出扫描数据Gi。 以这种方式驱动的显示器具有改进的刷新频率，具有与基于PWM的方案相同的灰度级再现能力。 此外，每个扫描操作或扫描周期的持续时间是恒定的，导致软件实现方便。 此外，表示灰度值的脉冲宽度由扫描操作的叠加确定。