Title:
CIRCUIT UNIT AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2007149894
Kind Code:
A
Abstract:
To provide a printed board hard to counterfeit and a manufacturing method thereof.
This printed board 10 consists of a substrate 10a comprising a body 11 and a cut-away portion 12. A memory chip 14 is formed on the body 11. Data write wiring 15 for writing data into the memory chip 14 is formed astride the body 11 and the cut-away portion 12. After the data are written into the memory chip 14 via the data write wiring 15, the cut-away portion 12 is cut away from the printed board 10 and discarded.
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Inventors:
NISHI AKIHIRO
Application Number:
JP2005341143A
Publication Date:
June 14, 2007
Filing Date:
November 25, 2005
Export Citation:
Assignee:
SHARP KK
International Classes:
H05K1/02
Attorney, Agent or Firm:
Kenzo Hara International Patent Office