Invention Grant
US08810375B2 Semiconductor device and IC label, IC tag, and IC card having the same
有权
半导体器件和IC标签，IC标签和具有该标签的IC卡
- Patent Title: Semiconductor device and IC label, IC tag, and IC card having the same
- Patent Title (中): 半导体器件和IC标签，IC标签和具有该标签的IC卡
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Application No.: US13792969Application Date: 2013-03-11
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Publication No.: US08810375B2Publication Date: 2014-08-19
- Inventor: Jun Koyama
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- 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: JP2006-152831 20060531
- Main IPC: H04Q5/22
- IPC: H04Q5/22
Abstract:
The present invention provides a power supply circuit provided with a battery as a power source for supplying power to an RFID, and the battery of the power supply circuit is charged with a wireless signal. Then, a switching circuit is provided in the power supply circuit that supplies power to a signal control circuit which transmits and receives individual information to and from the outside to intermittently control supply of power to the signal control circuit by a signal from a low-frequency signal generation circuit.
Public/Granted literature
- US20130193916A1 SEMICONDUCTOR DEVICE AND IC LABEL, IC TAG, AND IC CARD HAVING THE SAME Public/Granted day:2013-08-01
Information query
