Patent ID: 8318582
Filing Date: 2012-11-27
Classification: C08G,C08L,C09D,H01L

Abstract:
1. A method of forming a trench isolation, comprising: (a) applying a silicone resin composition to a substrate having trenches in such a manner that the trenches of the substrate are filled with the silicone resin composition so as to form a coating film, wherein said silicone resin composition comprises an organic solvent and a silicone resin which is represented by formula (1) and is solid at 120° C.: wherein n, m and k are each a number, with the proviso that when n+m+k=1, n is 0 to 0.8, m is 0 to 0.8, and k is 0 to 0.2; (b) bringing the coating film into contact with at least one selected from the group consisting of water, an alcohol and hydrogen peroxide; and (c) subjecting the coating film to at least one treatment selected from the group consisting of a heat treatment and an optical treatment; wherein (b) is performed before (c) or at the same time as (c) and the silicone resin composition in the trenches of the substrate is converted into silicon dioxide; and wherein the silicone resin of formula (1) is produced by condensing a silicon compound of formula (2) in an organic solvent under a basic or neutral condition wherein x is an integer of 3 to 25.