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:
Apr. 03, 2007
Filed:
Nov. 04, 2003
Jochen Thomas, Munich, DE;
Wolfgang Hetzel, Nattheim, DE;
Ingo Wennemuth, Munich, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A method of stacking semiconductor chips includes providing four semiconductor chips that each include a top surface with central bond pads. Each of the bond pads is electrically coupled to second bond pads located in a peripheral portion of the semiconductor chip through a conductive layer. The first and the second semiconductor chips are arranged alongside one another on a carrier substrate. The second bond pads from the first and second semiconductor chips are bonded to corresponding landing pads on the substrate. The third semiconductor chip is then stacked over the first semiconductor chip and the fourth semiconductor chip over the second semiconductor chip. The second bond pads of the third and fourth semiconductor chips can then be bonded to contact pads of the substrate. The substrate can then be separated into a first stack that includes the first and third semiconductor chips and a second stack that includes the second and fourth semiconductor chips.