The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Feb. 08, 2012
Yoshiyuki Kurokawa, Sagamihara, JP;
Takayuki Ikeda, Atsugi, JP;
Masami Endo, Atsugi, JP;
Hiroki Dembo, Isehara, JP;
Daisuke Kawae, Isehara, JP;
Takayuki Inoue, Atsugi, JP;
Munehiro Kozuma, Atsugi, JP;
Yoshiyuki Kurokawa, Sagamihara, JP;
Takayuki Ikeda, Atsugi, JP;
Masami Endo, Atsugi, JP;
Hiroki Dembo, Isehara, JP;
Daisuke Kawae, Isehara, JP;
Takayuki Inoue, Atsugi, JP;
Munehiro Kozuma, Atsugi, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
A semiconductor device is provided with a power supply circuit having a function to generate a power supply voltage from a wireless signal and an A/D converter circuit having a function to detect the strength of the wireless signal by an A/D conversion of a voltage generated from the wireless signal. This enables to provide a semiconductor device which does not require replacement of batteries, has few limitations on its physical shape and mass, and has a function to detect a physical position. By formation of the semiconductor device with use of a thin film transistor formed over a plastic substrate, a lightweight semiconductor device, which has flexibility in physical shape and a function to detect a physical location, can be provided at low cost.