Patent ID: 6673525
Filing Date: 2004-01-06
Classification: G03F

Abstract:
A method for forming a circuit pattern on a substrate, comprising the steps of:a) depositing a layer of a polymer resist material onto a substrate, wherein the polymer resist material comprises a compound having the structural formula wherein X is an acid group including carboxylic acid or sulphonic acid, and Q is a group that reacts selectively with an organosilicon compound and m and n are greater than 1;b) soft baking the polymer resist material; c) exposing the polymer resist material to a silylating reagent to form a silicon containing compound in a single step; d) exposing the silylated polymer resist material to radiation having a wavelength below 248 nm to form an exposed region and an unexposed region on the silylated polymer resist material that together form a circuit pattern; e) removing the exposed regions of the silylated polymer resist material by baking the exposed silylated resist material in a vacuum; and f) etching the resulting polymer resist material with an oxygen plasma to remove the unsilylated resist material and to convert the remaining silylated resist material to silicon dioxide.