Patent ID: 6146811
Filing Date: 2000-11-14
Classification: G03F,Y10S

Abstract:
A photoresist using a dioxaspiro ring-substitued acryl derivative, comprising a homopolymer of a dioxaspiro ring-containing acryl derivative, represented by the following general formula I, or its copolymer with an acryl derivative: ##STR5## wherein, R.sub.1 is H or CH.sub.3 ; R.sub.2 is COO, C.sub.6 H.sub.4, C.sub.6 H.sub.4 O, C.sub.6 H.sub.4 CH.sub.2 O, C.sub.6 H.sub.10, C.sub.6 H.sub.10 O or C.sub.6 H.sub.10 OCH.sub.2 O; and R.sub.3, R.sub.4, R.sub.5, R.sub.6 and n, each, are subjected to one of the following cases:a) n is an integer of 2 to 16 and R.sub.3 .dbd.R.sub.4 .dbd.R.sub.5 .dbd.R.sub.6 .dbd.H;b) n is an integer of 2 to 16 and R.sub.3 .dbd.R.sub.4 .dbd.R.sub.5 .dbd.H and R.sub.6 is an alkyl group containing 1-5 carbon atoms, CH.sub.3, CH.sub.3 O, CH.sub.2 CH.sub.3, CH.sub.2 CH.sub.3 O, OH or COOH;c) n is an integer of 2 to 16 and R.sub.3 .dbd.R.sub.5 .dbd.R.sub.6 .dbd.H and R.sub.4 is an alkyl group containing 1-8 carbon atoms, CH.sub.3, CH.sub.3 O, CH.sub.2 CH.sub.3, CH.sub.2 CH.sub.3 O, OH, COOH, NO.sub.2, NH.sub.2, or a halogen;d) n is an integer of 2 to 16 and R.sub.4 .dbd.R.sub.5 .dbd.R.sub.6 .dbd.H and R.sub.3 is an alkyl group containing 1-8 carbon atoms, CH.sub.3, CH.sub.3 O, CH.sub.2 CH.sub.3, CH.sub.2 CH.sub.3 O, OH, COOH, NO.sub.2, NH.sub.2, or a halogen;e) n is an integer of 2 to 16 and R.sub.3 .dbd.R.sub.4 .dbd.R.sub.6 .dbd.H and R.sub.5 is an alkyl group containing 1-5 carbon atoms; orf) n is 6, R.sub.4 is H and R.sub.3, R.sub.5 and R.sub.6, each, are CH.sub.2 at positions 1, 3 and 5.