公开(公告)号：US20150255043A1

公开(公告)日：2015-09-10

申请号：US14716979

申请日：2015-05-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki MIYAKE

IPC: G09G5/18 ,  G09G3/36 ,  G02F1/133 ,  G02F1/1368 ,  G02F1/1362

CPC classification number: G09G3/3614 ,  G02F1/13306 ,  G02F1/136213 ,  G02F1/1368 ,  G09G3/3611 ,  G09G3/3655 ,  G09G5/18 ,  G09G2300/0404 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0876 ,  G09G2320/10

Abstract: An object is to suppress deterioration of a displayed image even when a refresh rate is reduced in displaying a still image. A liquid crystal display device includes a pixel transistor electrically connected to a pixel electrode, and a capacitor having one electrode electrically connected to the pixel electrode and the other electrode electrically connected to a capacitor line. The pixel transistor is turned on and a voltage based on an image signal is supplied to the pixel electrode, and then, the pixel transistor is turned off so that a holding period during which the pixel electrode holds the voltage based on the image signal starts. A holding signal corresponding to change of the voltage based on the image signal in the pixel electrode in the holding period is supplied to the capacitor line so that a potential of the pixel electrode is constant.

Abstract translation: 即使在显示静止图像时刷新率降低时，也可以抑制显示图像的劣化。 液晶显示装置包括与像素电极电连接的像素晶体管和电容器，该电容器具有与像素电极电连接的一个电极和与电容器线电连接的另一个电极。 像素晶体管导通，基于图像信号的电压被提供给像素电极，然后像素晶体管截止，使得基于图像信号的像素电极保持电压的保持期间开始。 在保持期间，基于像素电极中的图像信号的电压变化对应的保持信号被提供给电容器线，使得像素电极的电位恒定。

公开(公告)号：US20150248857A1

公开(公告)日：2015-09-03

申请号：US14709880

申请日：2015-05-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: G09G3/30 ,  G09G5/18

CPC classification number: G09G3/30 ,  G09G3/3233 ,  G09G5/18 ,  G09G2300/0861

Abstract: A method for driving a light-emitting device comprises steps of: supplying a first potential to a drain of a transistor and a second potential being lower than the first potential to a cathode of a light-emitting element; supplying a third potential which is lower than a potential obtained by adding the threshold voltage of the transistor, the threshold voltage of the light-emitting element, and the second potential to a gate electrode of the transistor, and a fourth potential being lower than a potential obtained by subtracting the threshold voltage of the transistor from the third potential to the source of the transistor; stopping supply of the fourth potential to the source of the transistor; and supplying a potential of an image signal to the gate electrode of the transistor.

Abstract translation: 一种用于驱动发光器件的方法，包括以下步骤：向晶体管的漏极提供第一电位，将低于第一电位的第二电位提供给发光元件的阴极; 提供低于通过将晶体管的阈值电压，发光元件的阈值电压和第二电位加到晶体管的栅电极而获得的电位的第三电位，并且第四电位低于 通过从晶体管的第三电位减去晶体管的阈值电压而获得的电位; 停止向晶体管的源极供应第四电位; 以及向晶体管的栅电极提供图像信号的电位。

公开(公告)号：US20150236163A1

公开(公告)日：2015-08-20

申请号：US14628439

申请日：2015-02-23

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Masashi TSUBUKU ,  Kosei NODA

IPC: H01L29/786 ,  H01L27/12

CPC classification number: H01L29/78696 ,  H01L21/84 ,  H01L27/105 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/24 ,  H01L29/66969 ,  H01L29/7869 ,  H02M3/073 ,  H02M3/158

Abstract: A transistor includes a gate, a source, and a drain, the gate is electrically connected to the source or the drain, a first signal is input to one of the source and the drain, and an oxide semiconductor layer whose carrier concentration is 5×1014/cm3 or less is used for a channel formation layer. A capacitor includes a first electrode and a second electrode, the first electrode is electrically connected to the other of the source and the drain of the transistor, and a second signal which is a clock signal is input to the second electrode. A voltage of the first signal is stepped up or down to obtain a third signal which is output as an output signal through the other of the source and the drain of the transistor.

Abstract translation: 晶体管包括栅极，源极和漏极，栅极电连接到源极或漏极，第一信号被输入到源极和漏极中的一个，以及载流子浓度为5× 1014 / cm3以下用于沟道形成层。 电容器包括第一电极和第二电极，第一电极电连接到晶体管的源极和漏极中的另一个，并且作为时钟信号的第二信号被输入到第二电极。 第一信号的电压被升高或降低以获得通过晶体管的源极和漏极中的另一个输出作为输出信号的第三信号。

公开(公告)号：US20150144945A1

公开(公告)日：2015-05-28

申请号：US14551914

申请日：2014-11-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji KUSUNOKI ,  Hiroyuki MIYAKE

IPC: G02F1/1343 ,  H01L29/786 ,  G02F1/133 ,  G02F1/1362 ,  G02F1/1333 ,  H01L27/12 ,  G02F1/1368

CPC classification number: G02F1/136286 ,  G02F1/134336 ,  G02F1/1368 ,  G02F2001/134345 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/78606 ,  H01L29/7869 ,  H01L29/78696

Abstract: A transistor includes a gate electrode over a substrate, an oxide semiconductor film overlapping with the gate electrode, a gate insulating film in contact with one surface of the oxide semiconductor film, and a pair of conductive films in contact with the oxide semiconductor film. A capacitor includes a metal oxide film over the gate insulating film and in contact with one of the pair of conductive films, an inorganic insulating film, and a first light-transmitting conductive film over the inorganic insulating film. A first gate line serving also as a gate electrode is connected so as to be able to select three sub-pixels of four sub-pixels, and a second gate line is connected so as to be able to select the remaining one of the four sub-pixels and also one sub-pixel in the next row.

Abstract translation: 晶体管包括在衬底上的栅电极，与栅电极重叠的氧化物半导体膜，与氧化物半导体膜的一个表面接触的栅极绝缘膜和与氧化物半导体膜接触的一对导电膜。 电容器包括栅极绝缘膜上的金属氧化物膜，并且与无机绝缘膜上的一对导电膜之一，无机绝缘膜和第一透光性导电膜接触。 连接用作栅电极的第一栅极线，以便能够选择四个子像素的三个子像素，并且连接第二栅极线，以便能够选择四个子像素中的剩余的一个 像素和下一行中的一个子像素。

公开(公告)号：US20150070254A1

公开(公告)日：2015-03-12

申请号：US14540326

申请日：2014-11-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: G09G3/32

CPC classification number: G09G3/3208 ,  G09G3/2003 ,  G09G3/3233 ,  G09G2330/021 ,  H01L27/1225 ,  H01L27/3262 ,  H01L27/3276 ,  H01L29/78609 ,  H01L29/7869 ,  H01L29/78693 ,  H01L29/78696

Abstract: Objects are to provide a display device the power consumption of which is reduced, to provide a self-luminous display device the power consumption of which is reduced and which is capable of long-term use in a dark place. A circuit is formed using a thin film transistor in which a highly-purified oxide semiconductor is used and a pixel can keep a certain state (a state in which a video signal has been written). As a result, even in the case of displaying a still image, stable operation is easily performed. In addition, an operation interval of a driver circuit can be extended, which results in a reduction in power consumption of a display device. Moreover, a light-storing material is used in a pixel portion of a self-luminous display device to store light, whereby the display device can be used in a dark place for a long time.

Abstract translation: 目的是提供一种降低功耗的显示装置，以提供其功耗降低并且能够在黑暗处长期使用的自发光显示装置。 使用其中使用高度纯化的氧化物半导体并且像素可以保持一定状态（已经写入视频信号的状态）的薄膜晶体管形成电路。 结果，即使在显示静止图像的情况下，也能够容易地进行稳定的动作。 此外，可以延长驱动电路的操作间隔，这导致显示装置的功耗的降低。 此外，在自发光显示装置的像素部分中使用光存储材料来存储光，由此显示装置可以在黑暗的地方长时间使用。

公开(公告)号：US20140362324A1

公开(公告)日：2014-12-11

申请号：US14290263

申请日：2014-05-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Kouhei TOYOTAKA ,  Masahiko HAYAKAWA ,  Daisuke MATSUBAYASHI ,  Shinpei MATSUDA

IPC: G02F1/1343

CPC classification number: G02F1/134309 ,  G02F1/133345 ,  G02F1/1343 ,  G02F1/136213 ,  G02F1/13624 ,  G02F1/1368 ,  G02F2001/13685 ,  H01L27/1225 ,  H01L27/127 ,  H01L29/78648 ,  H01L29/7869 ,  H01L29/78696

Abstract: The following semiconductor device provides high reliability and a narrower frame width. The semiconductor device includes a driver circuit and a pixel portion. The driver circuit has a first transistor including a first gate and a second gate electrically connected to each other with a semiconductor film sandwiched therebetween, and a second transistor electrically connected to the first transistor. The pixel portion includes a third transistor, a liquid crystal element, and a capacitor. The liquid crystal element includes a first transparent conductive film electrically connected to the third transistor, a second conductive film, and a liquid crystal layer. The capacitor includes the first conductive film, a third transparent conductive film, and a nitride insulating film. The nitride insulating film is positioned between the first transparent conductive film and the third transparent conductive film, and positioned between the semiconductor film and the second gate of the first transistor.

Abstract translation: 以下半导体器件提供高可靠性和较窄的帧宽度。 半导体器件包括驱动电路和像素部分。 驱动电路具有包括第一栅极和第二栅极的第一晶体管，其中夹在其间的半导体膜彼此电连接，第二晶体管与第一晶体管电连接。 像素部分包括第三晶体管，液晶元件和电容器。 液晶元件包括与第三晶体管电连接的第一透明导电膜，第二导电膜和液晶层。 电容器包括第一导电膜，第三透明导电膜和氮化物绝缘膜。 氮化物绝缘膜位于第一透明导电膜和第三透明导电膜之间，位于第一晶体管的半导体膜和第二栅极之间。

公开(公告)号：US20140253533A1

公开(公告)日：2014-09-11

申请号：US14196368

申请日：2014-03-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE

IPC: G09G3/36

CPC classification number: G09G3/3655 ,  G02F1/136213 ,  G09G2300/0426

Abstract: A highly reliable semiconductor device and a method for driving the highly reliable semiconductor device is provided. In a semiconductor device in which a light-transmitting storage capacitor having a MOS capacitor structure is provided and a light-transmitting semiconductor film functioning as one electrode of the storage capacitor is electrically connected to a capacitor line, a shift of a threshold voltage of the storage capacitor in the positive direction is suppressed in a period during which an image is not displayed. For example, the shift of the threshold voltage of the storage capacitor in the positive direction is suppressed by application of a negative bias to a pixel electrode functioning as the other electrode of the storage capacitor.

Abstract translation: 提供了一种高度可靠的半导体器件和用于驱动高度可靠的半导体器件的方法。 在具有MOS电容器结构的透光保持电容器和用作辅助电容器的一个电极的透光半导体膜电连接到电容器线路的半导体器件中，阈值电压的偏移 在不显示图像的期间，抑制正方向的保持电容。 例如，通过对作为保持电容器的另一个电极起作用的像素电极施加负偏压来抑制存储电容器的正方向的阈值电压的偏移。

公开(公告)号：US20140184484A1

公开(公告)日：2014-07-03

申请号：US14138970

申请日：2013-12-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE ,  Hajime KIMURA ,  Yasuo NAKAMURA ,  Eriko NISHIDA

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G02F1/13338 ,  G02F1/13454 ,  G09G3/3677 ,  G09G2310/0224 ,  G09G2310/0286 ,  G09G2310/0297 ,  G09G2320/0247

Abstract: To provide a novel display device where display quality does not deteriorate. The display device includes a display portion configured to display a still image at a frame frequency of 30 Hz or lower. The display portion includes a driver circuit, a plurality of wirings, and a pixel portion. The pixel portion comprises a plurality of pixels. Each of the plurality of pixels comprises a transistor, a display element, and a capacitor. A channel is formed in an oxide semiconductor layer included in the transistor. A gate of the transistor is electrically connected to one of the plurality of wirings. The driver circuit performs scanning where the plurality of wirings in one of odd-numbered rows and even-numbered rows are sequentially selected and scanning where the plurality of wirings in the other of the odd-numbered rows and the even-numbered rows are sequentially selected.

Abstract translation: 提供显示质量不劣化的新型显示装置。 显示装置包括：显示部，被配置为以30Hz以下的帧频显示静止图像。 显示部分包括驱动电路，多个布线和像素部分。 像素部分包括多个像素。 多个像素中的每一个包括晶体管，显示元件和电容器。 在晶体管中包括的氧化物半导体层中形成沟道。 晶体管的栅极电连接到多条布线之一。 驱动器电路执行扫描，其中顺序地选择奇数行和偶数行之一中的多个布线，并且顺序地选择奇数行和偶数行中的另一个中的多个布线的扫描 。

公开(公告)号：US20140175432A1

公开(公告)日：2014-06-26

申请号：US14107688

申请日：2013-12-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Hideaki SHISHIDO ,  Masahiro KATAYAMA ,  Kenichi OKAZAKI

IPC: H01L27/12

CPC classification number: H01L27/1225 ,  H01L27/1248 ,  H01L27/1255

Abstract: A semiconductor device includes a transistor including an insulating film, an oxide semiconductor film, a gate electrode overlapping with the oxide semiconductor film, and a pair of electrodes in contact with the oxide semiconductor film; a capacitor including a first light-transmitting conductive film over the insulating film, a dielectric film over the first light-transmitting conductive film, and a second light-transmitting conductive film over the dielectric film; an oxide insulating film over the pair of electrodes of the transistor; and a nitride insulating film over the oxide insulating film. The dielectric film is the nitride insulating film, the oxide insulating film has a first opening over one of the pair of electrodes, the nitride insulating film has a second opening over the one of the pair of electrodes, and the second opening is on an inner side than the first opening.

Abstract translation: 半导体器件包括：晶体管，包括绝缘膜，氧化物半导体膜，与氧化物半导体膜重叠的栅极;以及与氧化物半导体膜接触的一对电极; 电容器，包括绝缘膜上的第一透光导电膜，第一透光性导电膜上的电介质膜和位于电介质膜上的第二透光性导电膜; 晶体管的一对电极上的氧化物绝缘膜; 以及氧化物绝缘膜上的氮化物绝缘膜。 所述电介质膜是所述氮化物绝缘膜，所述氧化物绝缘膜在所述一对电极中的一个上方具有第一开口，所述氮化物绝缘膜在所述一对电极中的一个上方具有第二开口，并且所述第二开口位于所述一对电极的内部 一边比第一个开口。

公开(公告)号：US20140146033A1

公开(公告)日：2014-05-29

申请号：US14086290

申请日：2013-11-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: G09G5/00 ,  G09G3/36

CPC classification number: G09G3/3655 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2320/041 ,  G09G2320/103 ,  G09G2340/0435

Abstract: To provide a novel display device without deterioration of display quality, the display device includes a display panel including a pixel portion that displays still images at a frame frequency of 30 Hz or less, a temperature sensing unit that senses the temperature of the display panel, a memory device that stores a correction table containing correction data, and a control circuit to which correction data selected from the correction table is input in accordance with an output of the temperature sensing unit. The pixel portion includes a plurality of pixels. Each of the pixels includes a transistor, a display element, and a capacitor. The control circuit outputs a voltage based on the correction data input to the control circuit, to the capacitor included in each of the pixels.

Abstract translation: 为了提供一种不会降低显示质量的新型显示装置，显示装置包括：显示面板，包括以30Hz以下的帧频显示静止图像的像素部，感测显示面板的温度的温度检测部， 存储装置，存储包含校正数据的校正表;以及控制电路，根据温度检测单元的输出，输入从校正表中选择的校正数据。 像素部分包括多个像素。 每个像素包括晶体管，显示元件和电容器。 控制电路基于输入到控制电路的校正数据将电压输出到每个像素中包括的电容器。