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. 04, 1991
Filed:
May. 02, 1990
Applicant:
Inventors:
John W Benko, Trenton, NJ (US);
Alexander Coucoulas, Basking Ridge, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912164 ; 219 8512 ; 21912178 ;
Abstract
An electronic device (10) is surface mounted to bonding pads (11) of a substrate (12) by first mounting the device within an aperture (24) of a glass plate (17). The leads (14) of the electronic device are coated with solder and pressed onto the bonding pads by the reusable glass plate (17). While pressing the plate against the leads, the plate is scanned with a laser beam (16) directly over each row of bonding pads. The laser light is of an appropriate wavelength such that the glass plate converts the laser light to heat, which melts the solder to bond the leads to the bonding pads.