Semiconductor device and manufacturing method thereof
US7793848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Aug 18, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is an object of the present invention to provide a semiconductor device having a memory circuit which is nonvolatile and able to be written additionally, an antenna which can be easily manufactured, and to provide a manufacturing method thereof. In addition, it is an object of the present invention to prevent unauthorized rewriting of information of a wireless chip and forgery of a wireless chip itself and to ensure a security of a wireless chip. In view of the foregoing, the present invention provides an IC tag in which information thereof is identified by wireless communication signal and also information of a memory in an IC tag (a memory which can not be rewritten) is identified by an optical reading device. A memory in an IC tag according to the present invention has an identification surface with which information can be identified by an optical reading device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.