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公开(公告)号：US10810961B2
公开(公告)日：2020-10-20
申请号：US15866514
申请日：2018-01-10
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
Abstract: It is an object to provide a semiconductor device which can supply a signal with sufficient amplitude to a scan line while power consumption is kept small. Further, it is an object to provide a semiconductor device which can suppress distortion of a signal supplied to the scan line and shorten a rising time and a falling time while power consumption is kept small. A semiconductor device which includes a plurality of pixels each including a display element and at least one first transistor and a scan line driver circuit supplying a signal for selecting the plurality of pixels to a scan line. A light-transmitting conductive layer is used for a pixel electrode layer of the display element, a gate electrode layer of the first transistor, source and drain electrode layers of the first transistor, and the scan line. The scan line driver circuit includes a second transistor and a capacitor for holding a voltage between a gate electrode layer of the second transistor and a source electrode layer of the second transistor. The source electrode of the second transistor is connected to the scan line.
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公开(公告)号：US10714622B2
公开(公告)日：2020-07-14
申请号：US15416164
申请日：2017-01-26
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hideaki Shishido , Shunpei Yamazaki
IPC: G02F1/1343 , H01L29/786 , G09G3/36 , H01L27/12 , G02F1/1362 , G02F1/1368 , H01L29/24 , H01L29/49 , G02F1/1333
Abstract: A liquid crystal display device is provided in which the aperture ratio can be increased in a pixel including a thin film transistor in which an oxide semiconductor is used. In the liquid crystal display device, the thin film transistor including a gate electrode, a gate insulating layer and an oxide semiconductor layer which are provided so as to overlap with the gate electrode, and a source electrode and a drain electrode which overlap part of the oxide semiconductor layer is provided between a signal line and a pixel electrode which are provided in a pixel portion. The off-current of the thin film transistor is 1×10−13 A or less. A potential can be held only by a liquid crystal capacitor, without a capacitor which is parallel to a liquid crystal element, and a capacitor connected to the pixel electrode is not formed in the pixel portion.
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3.发明授权公开(公告)号：US09218761B2
公开(公告)日：2015-12-22
申请号：US14335210
申请日：2014-07-18
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
CPC classification number: G09G3/22 , G09G3/3233 , G09G3/3266 , G09G2300/0465 , G09G2300/0819 , G09G2310/0251 , G09G2310/0262 , G09G2310/0264 , G09G2310/061
Abstract: The present invention is a method of driving a display device including a transistor, a capacitor one electrode of which is electrically connected to a first terminal of the transistor and the other electrode of which is electrically connected to a gate of the transistor, and a display element a first electrode of which is electrically connected to a second terminal of the transistor, including the steps of: electrically connecting the gate of the transistor, the first terminal of the transistor, and both electrodes of the capacitor to a first line in a first period; electrically connecting the gate of the transistor and the other electrode of the capacitor to a second line in a second period; and electrically connecting the first terminal of the transistor and one electrode of the capacitor to a third line in a third period.
Abstract translation: 本发明是一种驱动显示装置的方法，该显示装置包括晶体管，其电极的一个电极电连接到晶体管的第一端子，而另一个电极电连接到晶体管的栅极，显示器 元件，其第一电极电连接到晶体管的第二端子，包括以下步骤：将晶体管的栅极，晶体管的第一端子和电容器的两个电极电连接到第一线路中的第一线 期; 在第二周期中将晶体管的栅极和电容器的另一个电极电连接到第二线路; 以及在第三周期中将晶体管的第一端子和电容器的一个电极电连接到第三线路。
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公开(公告)号：US20140146034A1
公开(公告)日：2014-05-29
申请号：US14170671
申请日：2014-02-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hiroyuki Miyake
IPC: G09G5/00
CPC classification number: G09G5/00 , G09G3/20 , G09G3/3258 , G09G2300/0857 , G09G2330/021 , G09G2330/028
Abstract: A display device is driven through no wire cable such as an FPC, and a display image is continuously held for a certain period of time by storing an image signal received from a wireless communication device so that the display image can be held even when the display device is out of communication range with the wireless communication device. A display device includes at least a pixel circuit having an SRAM (static random access memory) circuit, a circuit which controls the pixel circuit, an antenna circuit, a circuit which generates a demodulation signal, a circuit which rectifies a wireless signal, a circuit which generates first voltage, a charge circuit which stores second voltage, a charge control circuit, a voltage supply control circuit, and a circuit which controls the charge control circuit and the voltage supply control circuit.
Abstract translation: 显示装置不通过FPC等线缆驱动，并且通过存储从无线通信装置接收的图像信号，连续保持显示图像一定时间，使得即使在显示器 设备与无线通信设备不在通信范围内。 显示装置至少包括具有SRAM（静态随机存取存储器）电路的像素电路，控制像素电路的电路，天线电路，产生解调信号的电路，校正无线信号的电路，电路 其产生第一电压，存储第二电压的充电电路，充电控制电路，电压供给控制电路和控制充电控制电路和电压供给控制电路的电路。
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公开(公告)号：US11663989B2
公开(公告)日：2023-05-30
申请号：US17848488
申请日：2022-06-24
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
CPC classification number: G09G3/3677 , G11C19/184 , H01L27/124 , H01L27/1225 , H01L27/1251 , H01L27/1255 , H01L28/40 , G09G3/3266 , G09G3/344 , G09G2300/0809 , G09G2310/0213 , G09G2310/0267
Abstract: It is an object to provide a semiconductor device which can supply a signal with sufficient amplitude to a scan line while power consumption is kept small. Further, it is an object to provide a semiconductor device which can suppress distortion of a signal supplied to the scan line and shorten a rising time and a falling time while power consumption is kept small A semiconductor device which includes a plurality of pixels each including a display element and at least one first transistor and a scan line driver circuit supplying a signal for selecting the plurality of pixels to a scan line. A light-transmitting conductive layer is used for a pixel electrode layer of the display element, a gate electrode layer of the first transistor, source and drain electrode layers of the first transistor, and the scan line. The scan line driver circuit includes a second transistor and a capacitor for holding a voltage between a gate electrode layer of the second transistor and a source electrode layer of the second transistor. The source electrode of the second transistor is connected to the scan line.
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Patent Agency Ranking
公开(公告)号：US11373615B2
公开(公告)日：2022-06-28
申请号：US17070128
申请日：2020-10-14
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
Abstract: It is an object to provide a semiconductor device which can supply a signal with sufficient amplitude to a scan line while power consumption is kept small. Further, it is an object to provide a semiconductor device which can suppress distortion of a signal supplied to the scan line and shorten a rising time and a falling time while power consumption is kept small. A semiconductor device which includes a plurality of pixels each including a display element and at least one first transistor and a scan line driver circuit supplying a signal for selecting the plurality of pixels to a scan line. A light-transmitting conductive layer is used for a pixel electrode layer of the display element, a gate electrode layer of the first transistor, source and drain electrode layers of the first transistor, and the scan line. The scan line driver circuit includes a second transistor and a capacitor for holding a voltage between a gate electrode layer of the second transistor and a source electrode layer of the second transistor. The source electrode of the second transistor is connected to the scan line.
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公开(公告)号：US20210118392A1
公开(公告)日：2021-04-22
申请号：US17070128
申请日：2020-10-14
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
Abstract: It is an object to provide a semiconductor device which can supply a signal with sufficient amplitude to a scan line while power consumption is kept small. Further, it is an object to provide a semiconductor device which can suppress distortion of a signal supplied to the scan line and shorten a rising time and a falling time while power consumption is kept small. A semiconductor device which includes a plurality of pixels each including a display element and at least one first transistor and a scan line driver circuit supplying a signal for selecting the plurality of pixels to a scan line. A light-transmitting conductive layer is used for a pixel electrode layer of the display element, a gate electrode layer of the first transistor, source and drain electrode layers of the first transistor, and the scan line. The scan line driver circuit includes a second transistor and a capacitor for holding a voltage between a gate electrode layer of the second transistor and a source electrode layer of the second transistor. The source electrode of the second transistor is connected to the scan line.
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8.发明授权公开(公告)号：US10565946B2
公开(公告)日：2020-02-18
申请号：US15824343
申请日：2017-11-28
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Shunpei Yamazaki , Ryo Arasawa , Jun Koyama , Masashi Tsubuku , Kosei Noda
IPC: H01L27/12 , G09G3/36 , H01L29/786 , H01L21/02 , H01L21/467 , H01L21/477 , H01L29/24 , H01L29/423 , H01L29/45 , H01L29/66 , G02F1/1335 , G02F1/1343 , G02F1/1368
Abstract: In a liquid crystal display device including a plurality of pixels in a display portion and configured to performed display in a plurality of frame periods, each of the frame periods includes a writing period and a holding period, and after an image signal is input to each of the plurality of pixels in the writing period, a transistor included in each of the plurality of pixels is turned off and the image signal is held for at least 30 seconds in the holding period. The pixel includes a semiconductor layer including an oxide semiconductor layer, and the oxide semiconductor layer has a carrier concentration of less than 1×1014/cm3.
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公开(公告)号：US10008169B2
公开(公告)日：2018-06-26
申请号：US15646452
申请日：2017-07-11
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hiroyuki Miyake , Hideaki Shishido , Ryo Arasawa
CPC classification number: G09G3/3648 , G06F1/3265 , G06F3/038 , G09G3/3614 , H01L27/1225 , H01L29/02 , Y02D10/153
Abstract: An object is to provide a driving method of a liquid crystal display device with a low power consumption and a high image quality. A pixel includes a liquid crystal element and a transistor which controls supply of an image signal to the liquid crystal element. The transistor includes, in a channel formation region, a semiconductor which has a wider band gap than a silicon semiconductor and has a lower intrinsic carrier density than silicon, and has an extremely low off-state current. In inversion driving of pixels, image signals having opposite polarities are input to a pair of signal lines between which a pixel electrode is disposed. By employing such a structure, the quality of the displayed image can be increased even in the absence of a capacitor in the pixel.
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公开(公告)号：US11901485B2
公开(公告)日：2024-02-13
申请号：US17751758
申请日：2022-05-24
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hideaki Shishido
CPC classification number: H01L33/16 , H01L27/124 , H01L27/1225
Abstract: An object is to provide a light-emitting display device in which a pixel including a thin film transistor using an oxide semiconductor has a high aperture ratio. The light-emitting display device includes a plurality of pixels each including a thin film transistor and a light-emitting element. The pixel is electrically connected to a first wiring functioning as a scan line. The thin film transistor includes an oxide semiconductor layer over the first wiring with a gate insulating film therebetween. The oxide semiconductor layer is extended beyond the edge of a region where the first wiring is provided. The light-emitting element and the oxide semiconductor layer overlap with each other.
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