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    SEMICONDUCTOR DEVICE
    141.
    发明申请
    SEMICONDUCTOR DEVICE 有权
    半导体器件

    公开(公告)号：US20140333365A1

    公开(公告)日：2014-11-13

    申请号：US14267943

    申请日：2014-05-02

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kei TAKAHASHI

    IPC: H03K3/356

    CPC classification number: H03K3/356017 ,  H03K19/018507 ,  H03K19/018514 ,  H03K19/018521

    Abstract: An object is to prevent malfunction of a power device. In a semiconductor device for driving a power device for power supply, a buffer circuit and a level-shift circuit are configured by transistors having the same conductivity type. Furthermore, a capacitor is provided in the level-shift circuit, and a signal to be boosted is supplied to the capacitor and is boosted using capacitive coupling of the capacitor. Furthermore, a structure can be employed in which the signal is boosted in such a manner that, in the level-shift circuit, a capacitor is provided between a wiring for supplying a low power source potential and a wiring for supplying a potential to boost the signal so that a power transistor can be driven.

    Abstract translation: 目的是防止电源设备发生故障。 在用于驱动电源的功率器件的半导体器件中，缓冲电路和电平移位电路由具有相同导电类型的晶体管构成。 此外，在电平移位电路中提供电容器，并且将要升压的信号提供给电容器，并且使用电容器的电容耦合进行升压。 此外，可以采用其中信号被升压的结构，使得在电平移位电路中，在用于提供低电源电位的布线和用于提供电位的电位的布线之间提供电容器 信号，从而可以驱动功率晶体管。

    DC-DC CONVERTER, POWER RECEIVING DEVICE, AND POWER FEEDING SYSTEM
    142.
    发明申请
    DC-DC CONVERTER, POWER RECEIVING DEVICE, AND POWER FEEDING SYSTEM 有权
    DC-DC转换器，电力接收装置和功率馈电系统

    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。

    SEMICONDUCTOR DEVICE
    143.
    发明申请
    SEMICONDUCTOR DEVICE 有权

    公开(公告)号：US20240396105A1

    公开(公告)日：2024-11-28

    申请号：US18676728

    申请日：2024-05-29

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Ryota TAJIMA ,  Kei TAKAHASHI ,  Hiroki INOUE ,  Munehiro KOZUMA ,  Takahiro FUKUTOME

    IPC: H01M10/44 ,  G01R31/367 ,  H01M10/48 ,  H02J7/00

    Abstract: A semiconductor device that inhibits deterioration of a secondary battery is provided. The semiconductor device includes a secondary battery module and a first circuit. The secondary battery module includes a secondary battery and a sensor. The first circuit includes a variable resistor. The sensor has a function of measuring a temperature of the secondary battery. The first circuit has a function of judging the charge voltage of the secondary battery and outputting a first result; a function of judging the temperature of the secondary battery measured by the sensor and outputting a second result; a function of determining the magnitude of the variable resistor on the basis of the first result and the second result; a function of discharging the charge voltage through the variable resistor; and a function of stopping discharge when the charge voltage reaches a specified voltage.

    SEMICONDUCTOR DEVICE, AMPLIFIER, AND ELECTRONIC DEVICE
    147.
    发明公开
    SEMICONDUCTOR DEVICE, AMPLIFIER, AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20230353110A1

    公开(公告)日：2023-11-02

    申请号：US17910057

    申请日：2021-03-16

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kei TAKAHASHI ,  Takayuki IKEDA ,  Shuji FUKAI ,  Shunpei YAMAZAKI

    IPC: H03F3/72 ,  H03F3/217 ,  H01L29/786 ,  H01L27/06

    CPC classification number: H03F3/72 ,  H03F3/2171 ,  H01L29/78693 ,  H01L27/0629 ,  H03F2203/7227

    Abstract: A small semiconductor device is provided. A semiconductor device with low power consumption is provided. A semiconductor device with a high degree of integration is provided. The semiconductor device includes a first transistor, an insulating layer over the first transistor, a conductive layer, and a gate driver; part of the conductive layer is provided to be embedded in the insulating layer; the gate driver includes a second transistor and a third transistor; the second transistor and the third transistor are stacked and provided over the first transistor; the second transistor and the third transistor each contain a metal oxide in a channel formation region; one of a source and a drain of the second transistor and one of a source and a drain of the third transistor are electrically connected to a gate of the first transistor through the conductive layer; the gate driver is supplied with a first potential and a second potential; and the gate driver has a function of selecting the first potential or the second potential and supplying the selected potential to the gate of the first transistor.

    Display Device and Operating Method Thereof
    148.
    发明公开
    Display Device and Operating Method Thereof 审中-公开

    公开(公告)号：US20230298537A1

    公开(公告)日：2023-09-21

    申请号：US18142370

    申请日：2023-05-02

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Susumu KAWASHIMA ,  Kouhei TOYOTAKA ,  Kei TAKAHASHI

    IPC: G09G3/36 ,  G06F3/041 ,  G06F3/044

    CPC classification number: G09G3/3677 ,  G06F3/0418 ,  G06F3/0443 ,  G02F1/1368

    Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.

    Display Device and Method for Driving Display Device
    149.
    发明公开
    Display Device and Method for Driving Display Device 审中-公开

    公开(公告)号：US20230176433A1

    公开(公告)日：2023-06-08

    申请号：US17041599

    申请日：2019-03-19

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Shunpei YAMAZAKI ,  Kouhei TOYOTAKA ,  Satoshi YOSHIMOTO ,  Kazunori WATANABE ,  Susumu KAWASHIMA ,  Kei TAKAHASHI

    IPC: G02F1/1362 ,  G09G3/36 ,  G09G3/32

    CPC classification number: G02F1/136286 ,  G09G3/3648 ,  G09G3/32 ,  G02F1/1368

    Abstract: Display data of pixels is updated at different timings. A scan line is connected to a first pixel and a second pixel, a first wiring is connected to the first pixel, and a second wiring is connected to the second pixel. In a first period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is updated is supplied to the first wiring, and setting data for setting a state where the display data of the second pixel is updated is supplied to the second wiring. In a second period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is not updated is supplied to the first wiring, and the setting data for setting the state where the display data of the second pixel is updated is supplied to the second wiring. In a third period, the first pixel displays first display data, and the second pixel displays second display data.

    DISPLAY DEVICE, DRIVING METHOD OF DISPLAY DEVICE, AND ELECTRONIC DEVICE
    150.
    发明申请
    DISPLAY DEVICE, DRIVING METHOD OF DISPLAY DEVICE, AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20230055169A1

    公开(公告)日：2023-02-23

    申请号：US17976919

    申请日：2022-10-31

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kei TAKAHASHI ,  Shunpei YAMAZAKI

    IPC: G09G3/20 ,  H01L27/12 ,  H01L29/786 ,  G09G3/3233

    Abstract: To provide a display device capable of displaying a plurality of images by superimposition using a plurality of memory circuits provided in a pixel. A plurality of memory circuits are provided in a pixel, and signals corresponding to images for superimposition are retained in each of the plurality of memory circuits. In the pixel, the signals corresponding to the images for superimposition are added to each of the plurality of memory circuits. The signals are added to the signals retained in the memory circuits by capacitive coupling. A display element can display an image corresponding to a signal in which a signal written to a pixel through a wiring is added to the signals retained in the plurality of memory circuits. Reduction in the amount of arithmetic processing for displaying images by superimposition can be achieved.

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