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:
Apr. 08, 2003
Filed:
Jun. 04, 2001
Applicant:
Inventors:
I-Chung Tung, Hsinchu, TW;
Shih-Ping Hsu, Tao Yuan, TW;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 3/102 ; B23K 3/100 ;
U.S. Cl.
CPC ...
B23K 3/102 ; B23K 3/100 ;
Abstract
A pin attachment method for mounting the pins on a wiring substrate for fabricating a pin grid array package is disclosed. There is provided an organic wiring board including a surface bearing electrical circuitry which includes at least one contact pad for receiving a pin. A solder mask layer which is placed on the board surface and patterned to expose the pad. The solder mask layer which does not cover any portion of the pad and forms a well by the perimeter of the solder mask layer around the pad. Subsequently, a pin and a solder material which are placed over said pad in the well. The pin which is soldered to the pad by a temperature sufficient to melt the solder material.