公开(公告)号：US20140124778A1

公开(公告)日：2014-05-08

申请号：US14148885

申请日：2014-01-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideki Uochi ,  Koichiro Kamata

IPC: H01L29/24

CPC classification number: G11C13/0007 ,  G11C11/404 ,  G11C13/003 ,  G11C13/004 ,  G11C13/0069 ,  G11C2013/0045 ,  G11C2013/0078 ,  G11C2213/53 ,  H01L27/115 ,  H01L29/16 ,  H01L29/24 ,  H01L29/247 ,  H01L29/49

Abstract: Disclosed is a semiconductor device having a memory cell which comprises a transistor having a control gate and a storage gate. The storage gate comprises an oxide semiconductor and is able to be a conductor and an insulator depending on the potential of the storage gate and the potential of the control gate. Data is written by setting the potential of the control gate to allow the storage gate to be a conductor, supplying a potential of data to be stored to the storage gate, and setting the potential of the control gate to allow the storage gate to be an insulator. Data is read by supplying a potential for reading to a read signal line connected to one of a source and a drain of the transistor and detecting the change in potential of a bit line connected to the other of the source and the drain.

Abstract translation: 公开了一种具有存储单元的半导体器件，该存储单元包括具有控制栅极和存储栅极的晶体管。 存储栅极包括氧化物半导体，并且能够根据存储栅极的电位和控制栅极的电位而成为导体和绝缘体。 通过设置控制栅极的电位来允许存储门为导体，向存储门提供要存储的数据的电位，以及设置控制门的电位以允许存储门为 绝缘子。 通过向连接到晶体管的源极和漏极中的一个的读取信号线提供读取电位并检测与源极和漏极中的另一个连接的位线的电位变化来读取数据。

公开(公告)号：US20130154556A1

公开(公告)日：2013-06-20

申请号：US13711961

申请日：2012-12-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Koichiro Kamata ,  Misako Miwa ,  Shuhei Maeda

IPC: G05F3/08 ,  H02J7/00

CPC classification number: H02M3/156 ,  G05F3/08 ,  H02J5/005 ,  H02J7/00 ,  H02J7/025 ,  H02J50/12 ,  H02M2001/0022

Abstract: A circuit capable of keeping input impedance constant is provided. Further, a circuit which can contribute to improvement in power feeding efficiency in power feeding by a magnetic resonance method is provided. A voltage (a former voltage) proportional to a direct-current voltage input to a DC-DC converter from the outside and a voltage (a latter voltage) proportional to a current input from the outside are detected, and the ratio of the former voltage and the latter voltage are held constant. Accordingly, input impedance can be kept constant. Further, impedance conversion is performed in the DC-DC converter. Thus, even when the battery in which power feeding is performed exists on an output side of the DC-DC converter, input impedance can be kept constant. Consequently, power can be supplied to a power receiving device including the DC-DC converter and the battery with high power feeding efficiency by a magnetic resonance method.

Abstract translation: 提供能够保持输入阻抗恒定的电路。 此外，提供了可以通过磁共振方法有助于提高馈电的馈电效率的电路。 检测与从外部输入到DC-DC转换器的直流电压成比例的电压（前一个电压）和与从外部输入的电流成比例的电压（后一个电压），并且前一个电压 并且后一电压保持恒定。 因此，输入阻抗可以保持恒定。 此外，在DC-DC转换器中进行阻抗转换。 因此，即使在DC-DC转换器的输出侧存在进行供电的电池，也可以保持输入阻抗恒定。 因此，可以通过磁共振方式向具有高功率馈送效率的DC-DC转换器和电池的电力接收装置供电。