Semiconductor Energy Laboratory Co., Ltd.

Mitsui Chemicals, Inc.

Mitsui Toatsu Chemicals, Incorporated

Gun Ei Chemical Industry Co., Ltd.

Yasunori Yoshida

Hajime Kimura

Shunpei Yamazaki

Masahiro Ohta

Terunori Fujita

Shigekazu Matsui

Osamu Nakamura

Shinji Maekawa

Tomoaki Matsugi

Shoji Obuchi

Takashi Nakano

Atsushi Umezaki

Hideaki Shishido

Makoto Mitani

Junji Saito

Naoto Matsukawa

Norio Kashiwa

Shinichi Kojoh

Kazutaka Tsuru

Seiichi Ishii

Yasuhiko Suzuki

Junichi Mohri

Yoshihisa Inoue

Yukihiro Takagi

Hidetsugu Tanaka

Yasuyuki Arai

Shoji Tamai

Tadashi Kobayashi

Hideaki Oikawa

Makoto Yanagisawa

Masaji Yoshimura

Akio Matsuyama

Eiji Senoue

Fumiaki Kuwano

Osamu Yasui

Takuya Kimishima

Hiroyasu Kido

Akinori Ryu

Kayako Yanagihara

Akihisa Shimomura

Kazutaka Kuriki

Kazuhiko Suzuki

Masanobu Ajioka

Toshihiko Takeuchi

Tomoyuki Iwabuchi

Akihiro Kimura

Kiyofumi Ogino

Takayuki Watanabe

Mizuki Sato

Yuichi Okawa

Takashi Kuroki

Yoshihiro Sakata

Masatoshi Nitabaru

Hiroyuki Itoh

Yasuhiro Kitahara

Atsushi Shibuya

Asami Tadokoro

Yasushi Nakayama

Tomohito Koba

Michihiko Miyamoto

Takashi Unezaki

Katsuji Watanabe

Takayuki Onogi

Yurika Sato

Tomoyuki Nakata

Fumiaki Nishino

Takeshi Karino

Mineo Kobayashi

Susumu Murata

Takaharu Abe

Masanobu Maeda

Takahiro Yamada

Tomomi Okumura

Fumiaki Ichikawa

Kan Ideda

Michiko Konishi

Hisashi Aihara

Makato Mitani

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, (&#xbd;) Lmax2&#x3c;Lmax1&#x3c;( 9/10) Lmax2 is satisfied in the one frame period, is provided.

Display device and driving method thereof

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, (&#xbd;)Lmax2&#x3c;Lmax1&#x3c;( 9/10)Lmax2 is satisfied in the one frame period, is provided.

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

To provide a semiconductor device which operates stably with few malfunctions due to noise, with low power consumption, and little variation in characteristics; a display device including the semiconductor device; and an electronic device including the display device. An output terminal is connected to a power supply line, thereby reducing 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, change in characteristics of the transistor is reduced by a signal line for reverse bias.

Semiconductor device, display device and electronic device

It is an object to improve performance of a power storage device, such as cycle characteristics. A power storage device includes a current collector and a crystalline semiconductor layer including a whisker, which is formed on and in close contact with the current collector. Separation of the crystalline semiconductor layer is suppressed by an increase of adhesion, whereby cycle characteristics in which a specific capacity of a tenth cycle number with respect to a first cycle number is greater than or equal to 90% is realized. In addition, cycle characteristics in which a specific capacity of a hundredth cycle number with respect to a first cycle number is greater than or equal to 70% is realized.

Manufacturing method of power storage device

To provide an active matrix display device in which power consumption of a signal line driver circuit can be suppressed, so that power consumption of the entire memory can be suppressed. A plurality of memory circuits which can write data of a video signal input to a pixel in one line period and can hold the data are provided in a signal line driver circuit of a display device. Then, the data held in each memory circuit is input to a pixel of a corresponding line as a video signal. By providing two or more memory circuits in a driver circuit, pieces of data of video signals corresponding to two or more line periods can be concurrently held in the memory circuits.

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.

Liquid crystal display device and driving method thereof

A phenol resin molding material includes a modified olefin-based polymer particle (I) and a phenol resin (II). It is preferable that the modified olefin-based polymer particle (I) satisfy at least one of the requirements (A), (B), and (C) which are defined as follows: (A) Inclusion of at least one element selected from a group consisting of a group 15 element, a group 16 element, and a group 17 element of the periodic table. (B) When the whole of the above-described olefin-based polymer particle (I) is set as 100 wt %, the content of the above-described elements is greater than or equal to 0.05 wt % and less than or equal to 50 wt %. (C) MFR which is measured under the conditions of 190&#xb0; C. and 2.16 kgf based on JIS K 7210 is greater than or equal to 0.001 g/10 minutes and less than 3 g/10 minutes.

Phenol resin molding material, friction material, and phenol resin molded product

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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Kanagawa, Japan

Yasunori Yoshida