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:
Nov. 23, 1993
Filed:
Oct. 16, 1992
Applicant:
Inventors:
Yukio Yamaguchi, Tokyo, JP;
Mutsuo Tsuji, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257687 ; 257729 ; 257731 ;
Abstract
In a chip-carrier provided with a chip-carrier substrate, a chip-carrier cover and an IC chip, said IC chip being arranged at a distance from a circuit surface of the IC chip being directed toward the chip-carrier substrate, an .alpha.-ray shielding film made of film material containing few radioactive elements, and adhered to a surface of the chip-carrier substrate facing the IC chip or to the circuit surface of the IC chip is provided for protecting the IC chip from the IC chip.