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    DISPLAY DEVICE
    1.
    发明申请
    DISPLAY DEVICE 审中-公开
    显示设备

    公开(公告)号：US20140361959A1

    公开(公告)日：2014-12-11

    申请号：US14273596

    申请日：2014-05-09

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Shunpei YAMAZAKI ,  Hajime KIMURA ,  Atsushi UMEZAKI ,  Yasunori YOSHIDA ,  Hideaki SHISHIDO ,  Takuya KIMISHIMA ,  Yasuyuki ARAI

    IPC: G09G3/32

    CPC classification number: G09G3/3233 ,  G09G3/006 ,  G09G3/20 ,  G09G3/2022 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0272 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2330/022 ,  G09G2340/145

    Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other.

    Abstract translation: 在诸如有机EL元件的显示元件中，由于发光而劣化进行，并且即使对显示元件施加相同的电压，发光亮度也降低。 因此，随着时间的推移导致每个像素的亮度变化，从而发生所谓的“图像老化”现象。 鉴于这个因素，本发明提供一种能够减少每个像素中的显示元件的劣化差异并抑制像素中的显示元件的发光变化的显示装置。 防止只有特定像素具有长的累积点亮时间。 为此，改变显示图案的灰度级以防止显示元件在像素中的劣化的差异增加。 或者，防止特定显示图案被固定地显示在特定区域中。 此外，劣化后退的像素劣化，使得像素的累积点亮时间相等。

    DISPLAY DEVICE
    2.
    发明申请
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190355303A1

    公开(公告)日：2019-11-21

    申请号：US16434670

    申请日：2019-06-07

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Shunpei YAMAZAKI ,  Hajime KIMURA ,  Atsushi UMEZAKI ,  Yasunori YOSHIDA ,  Hideaki SHISHIDO ,  Takuya KIMISHIMA ,  Yasuyuki ARAI

    IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/00 ,  G09G3/3225

    Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other.

    DISPLAY DEVICE
    4.
    发明申请
    DISPLAY DEVICE 有权
    显示设备

    公开(公告)号：US20150339980A1

    公开(公告)日：2015-11-26

    申请号：US14819594

    申请日：2015-08-06

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Shunpei YAMAZAKI ,  Hajime KIMURA ,  Atsushi UMEZAKI ,  Yasunori YOSHIDA ,  Hideaki SHISHIDO ,  Takuya KIMISHIMA ,  Yasuyuki ARAI

    IPC: G09G3/32 ,  G09G3/00 ,  G09G3/20

    CPC classification number: G09G3/3233 ,  G09G3/006 ,  G09G3/20 ,  G09G3/2022 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0272 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2330/022 ,  G09G2340/145

    Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other.

    Abstract translation: 在诸如有机EL元件的显示元件中，由于发光而劣化进行，并且即使对显示元件施加相同的电压，发光亮度也降低。 因此，随着时间的推移导致每个像素的亮度变化，从而发生所谓的“图像老化”现象。 鉴于这个因素，本发明提供一种能够减少每个像素中的显示元件的劣化差异并抑制像素中的显示元件的发光变化的显示装置。 防止只有特定像素具有长的累积点亮时间。 为此，改变显示图案的灰度级以防止显示元件在像素中的劣化的差异增加。 或者，防止特定显示图案被固定地显示在特定区域中。 此外，劣化后退的像素劣化，使得像素的累积点亮时间相等。

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