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:
Oct. 16, 2007
Filed:
May. 27, 2005
Rudy M. Emrick, Gilbert, AZ (US);
Bruce A. Bosco, Phoenix, AZ (US);
Stephen K. Rockwell, Mesa, AZ (US);
Rudy M. Emrick, Gilbert, AZ (US);
Bruce A. Bosco, Phoenix, AZ (US);
Stephen K. Rockwell, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A device () is provided for matching the CTE between substrates (), e.g., a semiconductor substrate and packaging material. The first substrate () has a first coefficient of thermal expansion and the second substrate () has a second coefficient of thermal expansion. At least two layers () of liquid crystal polymer are formed between the first substrate () and the second substrate (), each layer having a unique coefficient of thermal expansion progressively higher in magnitude from the first substrate () to the second substrate ().