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公开(公告)号：JP5306963B2
公开(公告)日：2013-10-02
申请号：JP2009241096
申请日：2009-10-20
Applicant: 株式会社半導体エネルギー研究所
CPC classification number: G09G3/3426 , G09G3/2022 , G09G3/3611 , G09G2310/061 , G09G2320/0233 , G09G2320/0247 , G09G2320/0252 , G09G2320/062 , G09G2320/066 , G09G2320/068 , G09G2320/103 , G09G2320/106 , G09G2340/16
Abstract: It is an object to improve image quality in displaying a still image and a moving image by suppressing flickers, a display malfunction, or the like of a display device. A method for controlling the light emission state of a backlight is made different between a still image portion and a moving image portion included in an image to be displayed. In specific, the amount of light emission in the still image portion is made as small as possible in a corresponding divided region of the backlight, and the amount of light emission in the moving image portion is controlled so as not to be changed as much as possible in a corresponding divided region of the backlight.
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公开(公告)号：JP5041772B2
公开(公告)日：2012-10-03
申请号：JP2006249113
申请日：2006-09-14
Applicant: 株式会社半導体エネルギー研究所
Inventor： 泰則 吉田
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公开(公告)号：JP5393854B2
公开(公告)日：2014-01-22
申请号：JP2012170755
申请日：2012-08-01
Applicant: 株式会社半導体エネルギー研究所
CPC classification number: H01L27/156 , H01L21/288 , H01L21/76838 , H01L27/1285 , H01L27/1292 , H01L27/3248 , H01L27/3276
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公开(公告)号：JP5291877B2
公开(公告)日：2013-09-18
申请号：JP2006342256
申请日：2006-12-20
Applicant: 株式会社半導体エネルギー研究所
Inventor： 泰則 吉田
Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor device which operates stably with few malfunctions due to noise, low power consumption, and little variation in characteristics, a display device including the semiconductor device, and electronic equipment including the display device. SOLUTION: An output terminal is connected to a power supply line, thereby reducing a variation in electric potential of the output terminal. In addition, a gate electrode potential which turns ON a transistor is maintained due to the capacitance of the transistor. Further, a change in characteristics of the transistor is reduced by a signal line for reverse biasing. COPYRIGHT: (C)2007,JPO&INPIT
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Patent Agency Ranking
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公开(公告)号：JP5566507B2
公开(公告)日：2014-08-06
申请号：JP2013133719
申请日：2013-06-26
Applicant: 株式会社半導体エネルギー研究所
IPC: G09G3/36 , G02F1/133 , G02F1/1368 , G09G3/20 , G09G3/34 , H01L21/336 , H01L29/786
CPC classification number: G09G3/3426 , G09G3/2022 , G09G3/3611 , G09G2310/061 , G09G2320/0233 , G09G2320/0247 , G09G2320/0252 , G09G2320/062 , G09G2320/066 , G09G2320/068 , G09G2320/103 , G09G2320/106 , G09G2340/16
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公开(公告)号：JP5422686B2
公开(公告)日：2014-02-19
申请号：JP2012033865
申请日：2012-02-20
Applicant: 株式会社半導体エネルギー研究所
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：JP5177999B2
公开(公告)日：2013-04-10
申请号：JP2006328670
申请日：2006-12-05
Applicant: 株式会社半導体エネルギー研究所
CPC classification number: G09G3/3413 , G02F1/13306 , G09G3/20 , G09G3/2018 , G09G3/2022 , G09G3/2074 , G09G3/2081 , G09G3/22 , G09G3/3258 , G09G3/3406 , G09G3/342 , G09G3/3607 , G09G3/3648 , G09G3/3659 , G09G3/3677 , G09G3/3688 , G09G2300/0465 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2300/0876 , G09G2300/088 , G09G2310/0235 , G09G2310/0237 , G09G2310/024 , G09G2310/0251 , G09G2310/061 , G09G2310/08 , G09G2320/0233 , G09G2320/0247 , G09G2320/0252 , G09G2320/0257 , G09G2320/0261 , G09G2320/028 , G09G2320/041 , G09G2320/043 , G09G2320/0613 , G09G2320/0646 , G09G2320/106 , G09G2330/021 , G09G2340/16 , G09G2360/144 , G09G2360/16 , H04M1/0214 , H04M1/0266 , H04M2250/16 , H04W52/0251 , Y02D70/00
Abstract: To provide a hold-type display device without a problem of motion blur and a driving method thereof. The length of a period for displaying a blanking image in one frame period is controlled in accordance with a control parameter showing the degree of motion blur, and the level of a signal supplied to a display element is changed in accordance with the length of the period for displaying the blanking image. Accordingly, the hold-type display device without a problem of motion blur and the driving method thereof can be provided.
Abstract translation: 提供一种没有运动模糊问题的保持型显示装置及其驱动方法。 根据表示运动模糊度的控制参数来控制用于在一个帧周期中显示消隐图像的周期的长度，并且根据周期的长度来改变提供给显示元件的信号的电平 用于显示消隐图像。 因此，可以提供没有运动模糊问题的保持型显示装置及其驱动方法。
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公开(公告)号：JP5159294B2
公开(公告)日：2013-03-06
申请号：JP2007333533
申请日：2007-12-26
Applicant: 株式会社半導体エネルギー研究所
Inventor： 泰則 吉田
IPC: H01L31/10
CPC classification number: H03F3/082 , G09G3/3413 , G09G3/3622 , G09G3/3648 , G09G2310/0235 , G09G2310/06 , G09G2320/0223 , G09G2320/0252 , G09G2320/0633 , G09G2320/064 , G09G2320/066 , G09G2340/16 , G09G2360/144
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