Patent ID: 8883397

Claim:
A positive photosensitive siloxane composition comprising (I) two kinds or more of polysiloxanes which have different dissolution rates in a tetramethylammonium hydroxide aqueous solution each other, (II) a diazonaphthoquinone derivative, and (III) solvent, wherein the polysiloxane (I) is a mixture of a polysiloxane (Ia) which is obtained by hydrolyzing and condensing, in the presence of a basic catalyst, a silane compound represented by the formula (1): RSi(OR 1 ) 3 and a silane compound represented by the formula (2): Si(OR 1 ) 4 in which R represents a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, in which any methylene group may be replaced by an oxygen atom, or represents an aryl group having 6 to 20 carbon atoms, in which any hydrogen atom may be replaced by a fluorine atom, and R 1 represents an alkyl group having 1 to 5 carbon atoms, a prebaked film of which is soluble in a 5% tetramethylammonium hydroxide aqueous solution, and a dissolution rate of which is 1,000 Å/second or less in a 5% TMAH aqueous solution, and a polysiloxane (Ib) which is obtained by hydrolyzing and condensing at least the silane compound represented by the formula (1) in the presence of an acidic or basic catalyst, and a prebaked film of which has a dissolution rate of 100 Å/second or more in a 2.38% tetramethylammonium hydroxide aqueous solution.