Patent ID: 6607019
Filing Date: 2003-08-19
Classification: H01L,Y10T

Abstract:
A system for applying adhesively coated material to at least a first portion and a second portion of a semiconductor die mounting site of a first leadframe and second leadframe of a plurality of leadframes for attachment of a semiconductor device thereto, said system comprising:a first source for supplying a first length of adhesively coated material at a first location of said at least a first portion of said semiconductor die mounting site of said first leadframe of said plurality of leadframes; a second source for supplying a second length of adhesively coated material at a second location of said at least a second portion of a semiconductor die mounting site of a second leadframe of said plurality of leadframes; indexing apparatus including: apparatus for moving said plurality of leadframes relative to said application apparatus in a single leadframe by single leadframe movement of said plurality of leadframes; and application apparatus for receiving said plurality of leadframes in a leadframe-by-leadframe sequence, said plurality of leadframes having a removable portion for engagement by a portion of said application apparatus, said application apparatus for receiving said first length of adhesively coated material at said first location of said at least a portion of said semiconductor die mounting site of said first leadframe of said plurality of leadframes and for receiving said second length of adhesively coated material at said second location of said at least a portion of said semiconductor die mounting site of said second leadframe of said plurality of leadframes, said application apparatus having cutting apparatus for cutting a first increment of said first length of adhesively coated material and for applying said first increment to the first location of said at least a first portion of said semiconductor die mounting site of said first leadframe of said plurality of leadframes upon indexing to said first location and for cutting a second increment of said second length of adhesively coated material and applying said second increment to said second location of said at least a second portion of said semiconductor die mounting site of said second leadframe of said plurality of leadframes upon indexing to said second location, said application apparatus including: a first cutting structure located at the first location having a first cutting die, the first cutting structure for receiving said first length of said adhesively coated material and for receiving said first cutting die movable relative to said first cutting structure for receiving said first length of said adhesively coated material; operation apparatus positioned to move said first cutting die relative to said first cutting structure for forming said first increment and for urging said first increment against said first location of said at least a first portion of said semiconductor die mounting site of said first leadframe of said plurality of leadframe; a second cutting structure located at the second location having a second cutting die, said second cutting die structure configured for receiving said second length of said adhesively coated material and for receiving said second cutting die, the second cutting die movable relative to said second cutting structure for receiving said second length of said adhesively coated material; and operation apparatus positioned to move said second cutting die relative to said second cutting structure for forming said second increment and for urging said second increment against said second location of said at least a second portion of said semiconductor die mounting site of said first leadframe of said plurality of leadframe.