Patent ID: 9640396
Date: 2017-05-02
CPC Classifications: C08G,G03F,H01L

Claim:
1. A method of forming a microelectronic structure, said method comprising: providing a precursor structure having a patterned surface, said patterned surface including at least one raised feature having first and second sidewalls and an upper surface, wherein said precursor structure further comprises a second raised feature that is below said at least one raised feature, said second raised feature having first and second sidewalls and an upper surface and said at least one raised feature being in contact with said second raised feature sidewalls and upper surface, said second raised feature and said at least one raised feature being formed of different materials; spin-applying a shrinkable composition to said patterned surface, said composition having an initial thickness and covering said at least one raised feature having said first and second sidewalls and said upper surface; heating said shrinkable composition, wherein said composition shrinks by at least about 25% so as to form a conformal layer of said composition on said patterned surface and over said at least one raised feature, said conformal layer having a final thickness that is at least about 25% less than said initial thickness; and removing at least some of said conformal layer to yield a pre-spacer structure comprising said at least one raised feature and remnants of said conformal layer against said at least one raised feature first and second sidewalls.