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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。
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公开(公告)号：US20180075806A1
公开(公告)日：2018-03-15
申请号：US15815774
申请日：2017-11-17
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 , G09G3/3225 , G09G3/00
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.
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公开(公告)号：US20160078822A1
公开(公告)日：2016-03-17
申请号：US14939497
申请日：2015-11-12
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
CPC classification number: G09G3/3406 , G02F1/0121 , G09G3/2025 , G09G3/3611 , G09G3/3614 , G09G3/3655 , G09G5/10 , G09G2300/0876 , G09G2310/024 , G09G2310/061 , G09G2320/0247 , G09G2320/0252 , G09G2320/0261 , G09G2320/0276 , G09G2320/0626 , G09G2320/0633 , G09G2330/021 , G09G2340/16
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (½) Lmax2
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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
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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公开(公告)号：US20130070000A1
公开(公告)日：2013-03-21
申请号：US13657136
申请日：2012-10-22
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
CPC classification number: G09G3/3406 , G02F1/0121 , G09G3/2025 , G09G3/3611 , G09G3/3614 , G09G3/3655 , G09G5/10 , G09G2300/0876 , G09G2310/024 , G09G2310/061 , G09G2320/0247 , G09G2320/0252 , G09G2320/0261 , G09G2320/0276 , G09G2320/0626 , G09G2320/0633 , G09G2330/021 , G09G2340/16
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (½) Lmax2
Abstract translation: 本发明的目的是提供一种显示装置，其中通过使用用于通过插入暗图像实现伪脉冲驱动的方法来减少诸如增加功率消耗和增加发光时的负载的问题的显示装置， 及其驱动方法。 一种显示装置，其通过将一个帧周期划分为多个子帧周期来显示灰度，其中一个帧周期被划分为至少第一子帧周期和第二子帧周期; 并且当显示最大灰度的第一子帧周期中的亮度为Lmax1，并且在显示最大灰度的第二子帧周期中的亮度为Lmax2时，在该一个中满足（½）Lmax2
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Patent Agency Ranking
公开(公告)号：US20200342820A1
公开(公告)日：2020-10-29
申请号：US16924262
申请日：2020-07-09
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (½) Lmax2
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公开(公告)号：US20230252948A1
公开(公告)日：2023-08-10
申请号：US18133625
申请日：2023-04-12
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
CPC classification number: G09G3/3406 , G09G3/2025 , G09G3/3611 , G09G3/3614 , G09G3/3655 , G02F1/0121 , G09G5/10 , G09G2300/0876 , G09G2310/024 , G09G2310/061 , G09G2320/0247 , G09G2320/0252 , G09G2320/0261 , G09G2320/0276 , G09G2320/0633 , G09G2330/021 , G09G2340/16 , G09G2320/0626
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (1/2) Lmax2
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公开(公告)号：US20220172685A1
公开(公告)日：2022-06-02
申请号：US17673937
申请日：2022-02-17
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (½) Lmax2
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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.
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公开(公告)号：US20180301097A1
公开(公告)日：2018-10-18
申请号：US16012024
申请日：2018-06-19
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yasunori YOSHIDA , Hajime KIMURA
Abstract: It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax1 and luminance in the second subframe period to display the maximum gray scale is Lmax2, (1/2)Lmax2
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