US2009191088A1PendingUtilityA1

Manufacturing method for a composite metal bonding wire and products thereof

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Assignee: LEE JUN-DERPriority: Jan 28, 2008Filed: Jan 28, 2008Published: Jul 30, 2009
Est. expiryJan 28, 2028(~1.5 yrs left)· nominal 20-yr term from priority
Inventors:Jun-Der Lee
H10W 72/552H10W 72/5522H10W 72/952H10W 72/923B21C 37/047C22C 5/06B21C 3/02C22C 5/08H10W 72/01565H10W 72/01561
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Claims

Abstract

A manufacturing method for a composite metal bonding wire and products thereof. A material of Ag and Au is co-melted in a vacuum melting furnace, and then a plurality of trace metal elements are added into the vacuum melting furnace and co-melted with the material to obtain a composite metal ingot. The obtained composite metal ingot is drawn to obtain a composite metal wire. The composite metal wire is then drawn to obtain a composite metal bonding wire with a predetermined diameter.

Claims

exact text as granted — not AI-modified
1 . A manufacturing method for a composite metal bonding wire, comprising:
 a) providing a material of Ag and Au;   b) co-melting the material in a vacuum melting furnace, adding a plurality of trace metal elements into the vacuum melting furnace and co-melting with the material in the vacuum melting furnace to obtain a composite metal ingot;   c) drawing the composite metal ingot to obtain a composite metal wire; and   d) drawing the composite metal wire to obtain a composite metal bonding wire with a predetermined diameter.   
     
     
         2 . The manufacturing method according to  claim 1 , wherein the mass fraction of Ag in step a) is 90.00%˜99.99% and the mass fraction of Au is 0.00001%˜9.99997%. 
     
     
         3 . The manufacturing method according to  claim 2 , wherein the trace metal elements in step b) comprises 0.00001%˜2.99997% Cu. 
     
     
         4 . The manufacturing method according to  claim 3 , wherein the trace metal elements in step b) comprises 0.00001%˜2.99997% Be. 
     
     
         5 . The manufacturing method according to  claim 4 , wherein the trace metal elements in step b) comprises 0.00001%˜2.99997% Al. 
     
     
         6 . The manufacturing method according to  claim 1 , wherein the surface of the composite metal bonding wire is cleaned and is annealed after step d). 
     
     
         7 . A composite metal bonding wire, comprising:
 90.00˜99.99% Ag; and   0.00001˜9.99997% Au.   
     
     
         8 . The composite metal bonding wire according to  claim 7 , further comprises 0.00001%˜2.99997% Cu. 
     
     
         9 . The composite metal bonding wire according to  claim 8 , further comprises 0.00001%˜2.99997% Be. 
     
     
         10 . The composite metal bonding wire according to  claim 9 , further comprises 0.00001%˜2.99997% Al.

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