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. 10, 1997
Filed:
Jan. 21, 1993
Applicant:
Inventors:
Michael J Ludden, Swindon, Wiltshire, GB;
Nicholas J Smith, Cricklade, Wiltshire SN6 6LT, GB;
Paul J Gibney, Liden, Swindon, Wiltshire SN3 6NW, GB;
Peter Nyholm, Swindon, Wiltshire, SN1 4JY, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257774 ; 257786 ;
Abstract
The present concepts include '1:1' uniax (40) with one conductive through-hole per chip connection site, 'mirror chip' testing, heat-sink bonding to chips, avoiding contact with conductive cleaved edge of chip, indium solid columns, metal recessed (41) in the through-holes. All of these are subject to preferred materials (UPILEX polyimide) and techniques (U.V. laser ablation, minimum taper of holes).