Invention Grant
- Patent Title: Semiconductor device and power receiving device
- Patent Title (中): 半导体装置及受电装置
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Application No.: US11896006Application Date: 2007-08-29
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Publication No.: US09022293B2Publication Date: 2015-05-05
- Inventor: Takeshi Osada , Hikaru Tamura
- Applicant: Takeshi Osada , Hikaru Tamura
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2006-237047 20060831
- Main IPC: G06K19/06
- IPC: G06K19/06 ; G06K19/07 ; G06K19/077

Abstract:
An object is to provide a semiconductor device that is capable of wireless communication, such as an RFID tag, which can transmit and receive individual information without checking remaining capacity of a battery or changing batteries due to deterioration with time in the battery for a drive power supply voltage, and maintain a favorable a transmission/reception state even when electric power of an electromagnetic wave from a reader/writer is not sufficient. The semiconductor device includes a signal processing circuit, a first antenna circuit connected to the signal processing circuit, an antenna circuit group, a rectifier circuit group and a battery connected to the signal processing circuit. The first antenna circuit transmits and receives a signal for transmitting data stored in the signal processing circuit and drives a power supply circuit, and each antenna circuit of the antenna circuit group receives a signal for charging the battery and includes an antenna which has a different corresponding frequency.
Public/Granted literature
- US20080210762A1 Semiconductor device and power receiving device Public/Granted day:2008-09-04
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