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. 21, 1995
Filed:
May. 26, 1994
Paul T Lin, Austin, TX (US);
Michael B McShane, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A ball grid array semiconductor device (10) includes a package substrate (14 or 16) having a plurality of conductive traces (18), bond posts (20), and conductive vias (22). A semiconductor die (12) is mounted to the package substrate. Orthogonal wire bonds (28) are used to electrically connect staggered bond pads (26) to corresponding bond posts (20) on the substrate. A liquid encapsulant (40) is used to cover the die, the wire bonds, and portions of the package substrate. In another embodiment, a package substrate (50) includes a lower bonding tier (52) and an upper bonding tier (54). Wire bonds (60) are used to electrically connect an outer row of bond pads (64) to bond posts (20) of lower tier (52), while wire bonds (62) are used to electrically connect an inner row of bond pads (64) to bond posts (20) of an upper tier (54). The loop height of wire bonds (60) is smaller than that of wire bonds (62).