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:
Jun. 29, 2010
Filed:
Sep. 04, 2007
Jun Zhai, San Jose, CA (US);
Ranjit Gannamani, San Jose, CA (US);
Srinivasan Parthasarathy, Mountain View, CA (US);
Jun Zhai, San Jose, CA (US);
Ranjit Gannamani, San Jose, CA (US);
Srinivasan Parthasarathy, Mountain View, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
Various semiconductor chip underfills and methods of making the same are provided. In one aspect, a method of manufacturing is provided that includes coupling a semiconductor chip to a substrate to leave a gap therebetween, and forming an underfill layer in the gap. The underfill layer includes a first plurality of filler particles that have a first average size and a second plurality of filler particles that have a second average size smaller than the first average size such that the first plurality of filler particles is concentrated proximate the substrate and the second plurality of filler particles is concentrated proximate the semiconductor chip so that a bulk modulus of the underfill layer is larger proximate the substrate than proximate the semiconductor chip.