-
11.发明授权Photosensor, semiconductor device including photosensor, and light measurement method using photosensor 有权光传感器，包括光电传感器的半导体器件和使用光电传感器的光测量方法公开(公告)号：US09142569B2
公开(公告)日：2015-09-22
申请号：US14159721
申请日：2014-01-21
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Koichiro Kamata
IPC: H01L27/12 , H01L31/08 , G01J1/44 , H01L31/113
CPC classification number: H01L27/1225 , G01J1/44 , H01L27/1251 , H01L31/1136
Abstract: An object is to provide a photosensor utilizing an oxide semiconductor in which a refreshing operation is unnecessary, a semiconductor device provided with the photosensor, and a light measurement method utilizing the photosensor. It is found that a constant gate current can be obtained by applying a gate voltage in a pulsed manner to a transistor including a channel formed using an oxide semiconductor, and this is applied to a photosensor. Since a refreshing operation of the photosensor is unnecessary, it is possible to measure the illuminance of light with small power consumption through a high-speed and easy measurement procedure. A transistor utilizing an oxide semiconductor having a relatively high mobility, a small S value, and a small off-state current can form a photosensor; therefore, a multifunction semiconductor device can be obtained through a small number of steps.
Abstract translation: 本发明的目的是提供一种使用不需要刷新操作的氧化物半导体的光传感器，设置有光传感器的半导体器件以及利用该光传感器的光测量方法。 发现通过以脉冲方式施加栅极电压到包括使用氧化物半导体形成的沟道的晶体管，可以获得恒定的栅极电流，并将其应用于光电传感器。 由于不需要光电传感器的刷新操作，因此可以通过高速且容易的测量程序来测量具有小功耗的光的照度。 利用具有较高迁移率，小S值和小截止电流的氧化物半导体的晶体管可以形成光电传感器; 因此，可以通过少量的步骤获得多功能半导体器件。
-
公开(公告)号：US09092042B2
公开(公告)日：2015-07-28
申请号：US13908121
申请日：2013-06-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hiroki Inoue , Kiyoshi Kato , Shuhei Nagatsuka , Koichiro Kamata , Tsutomu Murakawa , Takahiro Tsuji , Kaori Ikada
Abstract: One object of the present invention is to provide a regulator circuit with an improved noise margin. In a regulator circuit including a bias circuit generating a reference voltage on the basis of the potential difference between a first power supply terminal and a second power supply terminal, and a voltage regulator outputting a potential to an output terminal on the basis of a reference potential input from the bias circuit, a bypass capacitor is provided between a power supply terminal and a node to which a gate of a transistor included in the bias circuit is connected.
Abstract translation: 本发明的一个目的是提供一种具有改善的噪声容限的调节器电路。 在包括基于第一电源端子和第二电源端子之间的电位差产生参考电压的偏置电路的调节器电路中，以及基于参考电位向输出端子输出电位的电压调节器 在偏置电路的输入端，在电源端子与偏置电路中包含的晶体管的栅极连接的节点之间设置有旁路电容器。
-
公开(公告)号：US08981518B2
公开(公告)日：2015-03-17
申请号：US14456275
申请日：2014-08-11
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Koichiro Kamata
CPC classification number: H02M1/32 , G06K19/0701 , G06K19/0715 , G06K19/07749 , H01L27/0248 , H01L27/0285 , H01L27/1225 , H02H9/046 , H02J7/025 , H02J17/00 , H02J50/12 , H02M7/217
Abstract: To prevent damage on an element even when a voltage high enough to break the element is input. A semiconductor device of the invention operates with a first voltage and includes a protection circuit which changes the value of the first voltage when the absolute value of the first voltage is higher than a reference value. The protection circuit includes: a control signal generation circuit generating a second voltage based on the first voltage and outputting the generated second voltage; and a voltage control circuit. The voltage control circuit includes a transistor which has a source, a drain, and a gate, and which is turned on or off depending on the second voltage input to the gate and thus controls whether the value of the first voltage is changed based on the amount of current flowing between the source and the drain. The transistor also includes an oxide semiconductor layer.
Abstract translation: 即使输入足够高的电压来破坏元件，也能防止元件的损坏。 本发明的半导体器件以第一电压工作，并且包括当第一电压的绝对值高于参考值时改变第一电压的值的保护电路。 所述保护电路包括：控制信号生成电路，其基于所述第一电压生成第二电压，并输出所生成的第二电压; 和电压控制电路。 电压控制电路包括具有源极，漏极和栅极的晶体管，并且其根据输入到栅极的第二电压而导通或截止，从而基于第一电压的值是否改变第一电压的值 在源极和漏极之间流动的电流量。 晶体管还包括氧化物半导体层。
-
公开(公告)号：US20130249309A1
公开(公告)日：2013-09-26
申请号：US13804883
申请日：2013-03-14
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Misako MIWA , Koichiro Kamata , Shuhei Maeda
IPC: H04B5/00
CPC classification number: H04B5/0037 , B60L11/182 , H02J7/025 , H02J50/20 , H02J50/80 , H04B5/0093
Abstract: A power receiving device and a power feeding system which are capable of performing communication and power feeding at the same time are provided. Further, a power receiving device and a power feeding system which are capable of stably performing communication during power feeding are provided. One embodiment of the present invention relates to a power receiving device which includes an antenna for communication and power feeding that receives AC power, a rectifier circuit that rectifies the received AC power including the modulation signal into DC power, a smoothing circuit that smoothes the resulting DC power, a power storage device that stores the smoothed DC power, a communication control unit that analyzes the modulation signal included in the AC power, and a transformer that is positioned between the antenna and the rectifier circuit and changes a reference potential of the AC power, and a power feeding device.
Abstract translation: 提供能够同时进行通信和供电的电力接收装置和供电系统。 此外，提供能够在供电期间稳定地进行通信的受电装置和供电系统。 本发明的一个实施例涉及一种电力接收装置，其包括用于通信和馈电的天线，其接收AC电力;整流电路，将包括调制信号的所接收的AC电力整流为DC电力;平滑电路， 直流电力，存储平滑的直流电力的蓄电装置，分析交流电源中包含的调制信号的通信控制单元和位于天线与整流电路之间的变压器，并改变交流电的参考电位 电源和馈电装置。
-
公开(公告)号：US20130241301A1
公开(公告)日：2013-09-19
申请号：US13789864
申请日：2013-03-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Shuhei MAEDA , Koichiro Kamata , Misako Miwa
IPC: H04B5/00
CPC classification number: H04B5/0037 , H04B5/0093
Abstract: There is provided a power transmission device which includes an antenna receiving a reflected power from a power receiving device, a power detection unit detecting a value of the reflected power received by the antenna, a control circuit determining a power adjustment value in accordance with the value of the reflected power, a power adjustment unit to which the reflected power whose value is detected is input and which adjusts impedance in accordance with the power adjustment value determined by the control circuit, and a demodulation circuit to which the reflected power having the power adjustment value determined by the control circuit is input via the power adjustment unit having the adjusted impedance, and relates to a power feeding system including the power transmission device.
Abstract translation: 提供了一种电力传输装置，其包括从电力接收装置接收反射功率的天线，检测由天线接收的反射功率的值的功率检测单元，根据该值确定功率调整值的控制电路 反射功率的功率调节单元，输入检测值的反射功率的功率调节单元，并且根据由控制电路确定的功率调整值调整阻抗;以及解调电路，具有功率调整的反射功率 由控制电路确定的值通过具有调节阻抗的功率调节单元输入，并且涉及包括电力传输装置的馈电系统。
-
Patent Agency Ranking
公开(公告)号：US10461585B2
公开(公告)日：2019-10-29
申请号：US15884698
申请日：2018-01-31
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Koichiro Kamata
Abstract: When a portable electronic appliance is provided with two systems, a wireless power-feeding system and a wireless communication system, each system requires two power-receiving devices, a coil and an antenna, leading to a problem of increased electronic appliance size and cost. Wireless power feeding employs the resonance method and uses a resonance coil using the resonance method and a power-receiving coil that receives power from the resonance coil. At least one of the resonance coil and the power-receiving coil can also be used as an antenna for wireless communication. Thus, a power-receiving device that can be used for two systems, wireless power feeding and wireless communication, can be provided.
-
17.发明授权公开(公告)号：US10044224B2
公开(公告)日：2018-08-07
申请号：US15182844
申请日：2016-06-15
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Koichiro Kamata , Misako Sato , Shuhei Maeda
IPC: H01F27/42 , H01F37/00 , H01F38/00 , H02J50/10 , H04B1/44 , H02J50/90 , H02J50/40 , H02J5/00 , H02J17/00 , H02J50/12 , H02J50/80 , H02J50/20 , H02J7/02 , H02J50/05
Abstract: An object is to provide a power feeding device, a power feeding system, and a power feeding method which are more convenient for a power feeding user at the power receiving end. The power feeding device includes a means of controlling a frequency of a power signal transmitted to a power receiver, based on a proportion of signals, among power signals output to an antenna circuit, that return from the power receiver to the antenna circuit without feeding power to the power receiver.
-
公开(公告)号：US09923417B2
公开(公告)日：2018-03-20
申请号：US14795109
申请日：2015-07-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Koichiro Kamata
Abstract: An object is to provide a wireless power feeding system using the resonance method, which can increase power transmission efficiency. The wireless power feeding system includes a power transmission coil electrically connected to a high-frequency power supply, a power transmission resonance coil for transmitting power by electromagnetic induction with the power transmission coil, a power reception resonance coil for exciting high-frequency power by magnetic resonance, a load coil for exciting high-frequency power by electromagnetic induction with the power reception resonance coil, a load, and a variable element. The load includes a microprocessor for controlling the impedance of the load, a battery charger, and a battery. The battery charger is configured to charge the battery with the high-frequency power excited by the load coil.
-
公开(公告)号：US09819256B2
公开(公告)日：2017-11-14
申请号：US14632104
申请日：2015-02-26
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Koichiro Kamata
CPC classification number: H02M1/32 , G06K19/0701 , G06K19/0715 , G06K19/07749 , H01L27/0248 , H01L27/0285 , H01L27/1225 , H02H9/046 , H02J7/025 , H02J17/00 , H02J50/12 , H02M7/217
Abstract: To prevent damage on an element even when a voltage high enough to break the element is input. A semiconductor device of the invention operates with a first voltage and includes a protection circuit which changes the value of the first voltage when the absolute value of the first voltage is higher than a reference value. The protection circuit includes: a control signal generation circuit generating a second voltage based on the first voltage and outputting the generated second voltage; and a voltage control circuit. The voltage control circuit includes a transistor which has a source, a drain, and a gate, and which is turned on or off depending on the second voltage input to the gate and thus controls whether the value of the first voltage is changed based on the amount of current flowing between the source and the drain. The transistor also includes an oxide semiconductor layer.
-
公开(公告)号：US09768319B2
公开(公告)日：2017-09-19
申请号：US15159182
申请日：2016-05-19
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Koichiro Kamata
IPC: H01L29/78 , H01L29/786 , H03C1/36 , G06K19/077 , H01L23/66 , H01L27/06 , H01L49/02
CPC classification number: H01L29/7869 , G06K19/07775 , H01L23/66 , H01L27/0629 , H01L28/20 , H01L28/40 , H01L29/78693 , H01L29/78696 , H01L2223/6677 , H03C1/36 , H04M2201/04 , H04M2201/06
Abstract: A modulation circuit includes a load and a transistor serving as a switch. The transistor has an oxide semiconductor layer in which hydrogen concentration is 5×1019/cm3 or less. The off-state current of the transistor is 1×10−13 A or less. A modulation circuit includes a load, a transistor serving as a switch, and a diode. The load, the transistor, and the diode are connected in series between the terminals of an antenna. The transistor has an oxide semiconductor layer in which hydrogen concentration is 5×1019/cm3 or less. An off-state current of the transistor is 1×10−13 A or less. On/off of the transistor is controlled in accordance with a signal inputted to a gate of the transistor. The load is a resistor, a capacitor, or a combination of a resistor and a capacitor.
-
-
-
-
-
-
-
-
-
Search Results
42
records
(took 0.022 seconds)
