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:
Mar. 04, 2014
Filed:
Oct. 26, 2007
Kouji Yamada, Tokyo, JP;
Kouji Yamada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention provides an electronic device with a secondary cell which has a simple structure and is capable of extending a continuous operating period by compensating for power consumption through effective utilization of a light source and external light. On a rear face of a casingof a mobile phone, a light source, a conductive key sheethaving a plurality of operation keysand a solar batteryare layered. Each of the operation keysis exposed outwards through a through-holeof the solar batteryand a through-holeof the casing. The key sheetguides the light from the light sourceand the light from the outside of the casingto the solar batteryand guides the light from the light sourceonto the operation key. The solar batteryreceives the light from the light sourceand the outside of the casingthrough the key sheetand converts the light into electric energy to be charged into a secondary cell.