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:
Aug. 13, 2002
Filed:
Jan. 20, 2000
Applicant:
Inventors:
Igor Y. Khandros, Orinda, CA (US);
Thomas H. Distefano, Monte Sereno, CA (US);
Assignee:
Tessera, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/3053 ; H01L 2/312 ; H01L 2/314 ; H01L 2/348 ; H01L 2/352 ;
U.S. Cl.
CPC ...
H01L 2/3053 ; H01L 2/312 ; H01L 2/314 ; H01L 2/348 ; H01L 2/352 ;
Abstract
A semiconductor chip is mounted in face-up disposition, with a contact-bearing front surface facing away from a substrate such as a circuit panel, and with a rear face facing toward the substrate. A backing element having terminals is disposed between the rear face of the chip and the substrate, and the terminals of the backing element are connected to contact pads on the substrate. The terminals of the backing element are movable with respect to the chip to compensate for differential thermal expansion of the chip and substrate.