Patent ID: 7052820

Claim:
A photoresist, comprising: a polymer having at least one first polymer chain segment and at least one second polymer chain segment, said at least one first polymer chain segments being formed from alternately disposed silicon and oxygen atoms and said at least one second polymer chain segment being formed from carbon atoms forming side chains to said first polymer chain segment, said polymer chain segment formed from carbon atoms including acid-labile groups and a group having high polarity bonded to at least one of said acid-labile groups, said groups having high polarity making said polymer soluble in aqueous alkaline developers after elimination of said acid-labile groups; said polymer being a compound according to Formula I wherein; R 1 , R 2 , and R 3 denote radicals selected in each case independently of one another from the group consisting of alkyl radicals having 1 to 10 carbon atoms, cycloalkyl radicals having 5 to 20 carbon atoms, aryl radicals having 6 to 20 carbon atoms, aralkyl radicals having 7 to 20 carbon atoms, and polar radicals protected by an acid-labile group; R i denotes a hydrogen atom or an initiator selected from the group consisting of an initiator group, and a polymer chain having an initiator group; R 5 denotes an acid-labile group; R 4 denotes a polymer chain formed from carbon atoms; R 5 denotes a substituent selected from the group consisting of a hydrogen, a halogen, a pseudohalogen, an alkyl group having 1 to 10 carbon atoms, and an at least-partially halogenated alkyl group having 1 to 10 carbon atoms; X denotes a highly-polar group increasing the solubility of the polymer in aqueous alkaline developers after elimination of said group R 5 ; m and o denote ordinal numbers having a sum greater than 10; n denotes an integer of at least 1; q denotes an ordinal number; p denotes an integer at least equal to 1; repeating units including indices m, n, o, p, and q are disposed in any desired sequence; a photo acid generator; and a solvent.