Patent ID: 9117861
Filing Date: 2015-08-25
Classification: B29C,B32B,H01L,Y10T

Abstract:
1. A debondable wafer stack, comprising: a support substrate; a semiconductor substrate; a thermally stable polymer layer comprising at least one of a styrene-hydrogenated isoprene-styrene polymer, a styrene-hydrogenated butadiene-styrene polymer, a styrene hydrogenated isoprene/butadiene-styrene polymer or a polynorbornene polymer, where such styrene-hydrogenated polymers are at least 30 wt. % styrene and have a weight average molecular weight of less than 100,000 Dalton and where such polynorbornene polymer has a glass transition temperature of 300° C. or less; and a surface energy modifier material (SEMM) selected from octadecyltrichlorosilane, octadecyltrimethoxysilane, (2-dodecen-1-yl) succinic anhydride, a hydrogenated monohydroxy-terminated polybutadiene, or a polyether-modified polydimethylsiloxane; where such SEMM is applied to surface of at least one of the support substrate or the semiconductor substrate or a SEMM selected from octadecyltrichlorosilane, octadecyltrimethoxysilane, a hydrogenated monohydroxy-terminated polybutadiene, or a polyether-modified polydimethylsiloxane is added to one of the polymers; and wherein said surface energy modifier material is present at an amount greater than 2.5 parts per hundred parts of said thermally stable polymer.