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公开(公告)号：US10566497B2
公开(公告)日：2020-02-18
申请号：US16531204
申请日：2019-08-05
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hideaki Shishido
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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公开(公告)号：US12224376B2
公开(公告)日：2025-02-11
申请号：US18417474
申请日：2024-01-19
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Ryo Arasawa , Hideaki Shishido
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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公开(公告)号：US12183302B2
公开(公告)日：2024-12-31
申请号：US18200081
申请日：2023-05-22
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：US11545551B2
公开(公告)日：2023-01-03
申请号：US17047236
申请日：2019-04-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shunpei Yamazaki , Shinya Sasagawa , Erika Takahashi , Katsuaki Tochibayashi , Ryo Arasawa
IPC: H01L29/24 , H01L27/12 , H01L27/108
Abstract: A semiconductor device in which variations in characteristics, deterioration of elements, and abnormality in shape are inhibited is provided. The semiconductor device includes a first region including a plurality of elements and a second region including a plurality of dummy elements. The second region is provided in an outer edge of the first region, and the element and the dummy element each include an oxide semiconductor. The element and the dummy element have the same structure, and a structure body included in the element and a structure body included in the dummy element are formed with the same material and provided in the same layer. The oxide semiconductor includes In, an element M (M is Al, Ga, Y, or Sn), and Zn.
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15.发明授权公开(公告)号：US09959822B2
公开(公告)日：2018-05-01
申请号：US15134937
申请日：2016-04-21
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Shunpei Yamazaki , Ryo Arasawa , Jun Koyama , Masashi Tsubuku , Kosei Noda
IPC: G09G3/36 , H01L27/12 , H01L29/786 , H01L21/02 , H01L21/467 , H01L21/477 , H01L29/24 , H01L29/423 , H01L29/45 , H01L29/66 , G02F1/1335 , G02F1/1343 , G02F1/1368
CPC classification number: G09G3/3614 , G02F1/133553 , G02F1/13439 , G02F1/1368 , G02F2201/123 , G02F2202/10 , G09G3/3648 , G09G3/3677 , G09G2300/08 , G09G2310/0286 , G09G2310/08 , G09G2330/021 , H01L21/02164 , H01L21/02266 , H01L21/02565 , H01L21/02631 , H01L21/467 , H01L21/477 , H01L27/1225 , H01L27/1255 , H01L29/24 , H01L29/42356 , H01L29/45 , H01L29/66969 , H01L29/78648 , H01L29/7869
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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Patent Agency Ranking
公开(公告)号：US09875713B2
公开(公告)日：2018-01-23
申请号：US15412263
申请日：2017-01-23
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Atsushi Umezaki , Ryo Arasawa
CPC classification number: G09G3/3677 , G09G3/3266 , G09G3/344 , G09G2300/0809 , G09G2310/0213 , G09G2310/0267 , G11C19/184 , H01L27/1225 , H01L27/124 , H01L27/1251 , H01L27/1255 , H01L28/40
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：US09548039B2
公开(公告)日：2017-01-17
申请号：US14170671
申请日：2014-02-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hiroyuki Miyake
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：US20140204073A1
公开(公告)日：2014-07-24
申请号：US14219275
申请日：2014-03-19
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Kouhei Toyotaka , Hiroyuki Miyake , Ryo Arasawa , Koji Kusunoki , Tsutomu Murakawa
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/20 , G09G3/36 , G09G3/3688 , G09G2320/103 , G09G2330/04
Abstract: Provided is a liquid crystal display device having a pixel including a transistor and a liquid crystal element and a protection circuit electrically connected to one of a source and a drain of the transistor through a data line. The protection circuit includes a first terminal supplied with a first power supply potential and a second terminal supplied with a second power supply potential higher than the first power supply potential. In a moving image display mode, an image signal is input from the data line to the liquid crystal element through the transistor, and the first power supply potential is set at the first potential. In a still image display mode, supply of the image signal is stopped, and the first power supply potential is set at the second potential. The second potential is substantially the same as the minimum value of the image signal.
Abstract translation: 提供一种液晶显示装置，其具有包括晶体管和液晶元件的像素，以及通过数据线电连接到晶体管的源极和漏极之一的保护电路。 保护电路包括提供有第一电源电位的第一端子和被提供有高于第一电源电位的第二电源电位的第二端子。 在运动图像显示模式中，图像信号通过晶体管从数据线输入到液晶元件，并且第一电源电位被设置为第一电位。 在静止图像显示模式下，停止图像信号的供给，将第一电源电位设定为第二电位。 第二电位与图像信号的最小值基本相同。
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公开(公告)号：US12057480B2
公开(公告)日：2024-08-06
申请号：US18090634
申请日：2022-12-29
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shunpei Yamazaki , Shinya Sasagawa , Erika Takahashi , Katsuaki Tochibayashi , Ryo Arasawa
CPC classification number: H01L29/24 , H01L27/1225 , H01L27/1251 , H10B12/30
Abstract: A semiconductor device in which variations in characteristics, deterioration of elements, and abnormality in shape are inhibited is provided. The semiconductor device includes a first region including a plurality of elements and a second region including a plurality of dummy elements. The second region is provided in an outer edge of the first region, and the element and the dummy element each include an oxide semiconductor. The element and the dummy element have the same structure, and a structure body included in the element and a structure body included in the dummy element are formed with the same material and provided in the same layer. The oxide semiconductor includes In, an element M (M is Al, Ga, Y, or Sn), and Zn.
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20.发明授权公开(公告)号：US11355669B2
公开(公告)日：2022-06-07
申请号：US16736008
申请日：2020-01-07
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryo Arasawa , Hideaki Shishido
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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