Patent ID: 6623592
Filing Date: 2003-09-23
Classification: H01L,Y10T

Abstract:
A method of attaching portions of adhesively coated material to a plurality of sites on a leadframe, said method comprising:providing a source of an adhesively coated material; providing a leadframe having a first site for attachment of a first portion of said adhesively coated material and a second site for attachment of a second portion of said adhesively coated material; providing an application apparatus having a first applicator and a second applicator, wherein a displacement of said application apparatus operates to simultaneously displace said first applicator toward a first location and said second applicator toward a second location, said first applicator being constructed to remove said first portion of said adhesively coated material from said source of adhesively coated material and apply said first portion to said first site, said second applicator being constructed to remove said second portion of said adhesively coated material from said source of adhesively coated material and apply said second portion to said second site; providing an indexing apparatus for positioning said leadframe in a first condition such that said first site of said leadframe is situated at said first location, said indexing apparatus being further adapted to position said leadframe in a second condition such that said second site is situated at said second location; operating said indexing apparatus to displace said leadframe to said first condition; operating said source of said adhesively coated material to selectively supply said first applicator with a quantity of said adhesively coated material while withholding a supply of said adhesively coated material from said second applicator; displacing said application apparatus such that said first applicator is urged toward said first location thereby causing said first applicator to remove said first portion of said adhesively coated material from said source of adhesively coated material and apply said first portion to said first site while said second applicator is urged toward said second site without removing said second portion of said adhesively coated material from said source of said adhesively coated material or applying said second portion to said second site; operating said indexing apparatus to displace said leadframe to said second condition; operating said source of said adhesively coated material to selectively supply said second applicator with a quantity of said adhesively coated material while withholding a supply of said adhesively coated material from said first applicator; displacing said application apparatus such that said second applicator is urged toward said second location thereby causing said second applicator to remove said second portion of said adhesively coated material from said source of adhesively coated material and apply said second portion to said second site while said first applicator is urged toward said first site without removing another portion of said adhesively coated material from said source of adhesively coated material or applying said another portion to said first site.