Patent ID: 6312800
Filing Date: 2001-11-06
Classification: B32B,H01L,Y10S,Y10T

Abstract:
A pressure sensitive adhesive sheet for producing a chip, comprising:an expansible film;a pressure sensitive adhesive layer including an area for setting an object to be diced; andat least one layer of a shrinkable film having a shrinkage ratio of 10-90% upon heating to 120.degree. C.,wherein a shrinkage area formed by the shrinkable film is at least partially located outside of said area for setting the object to be diced, wherein the shrinkable film includes one or more members selected from polyethylene terephthalate, polyethylene, polystyrene, polypropylene, polyamide, polyurethane, polyvinylidene chloride and polyvinyl chloride, andwherein the shrinkable film and the expansible film are laminated via an adhesive layer having an elastic modulus of at least 1.0.times.10.sup.5 N/m.sup.2.