Patent ID: 7655365

Claim:
A pattern formed body comprising a wettability pattern consisting of an unexposed area whose contact angle to a liquid having a surface tension of 40 mN/m is 10° or more, and an exposed area whose contact angle to a liquid having a surface tension of 40 mN/m is 9° or less, wherein the pattern formed body is obtained by exposing the surface of a wettability variable layer of a wettability variable substrate in a pattern, under a condition that the wettability variable layer is facing to a photocatalyst layer containing a photocatalyst, thus obtained pattern formed body does not contain the photocatalyst, the wettability variable substrate comprising a wettability variable layer, on a substrate, which the wettability is varied by being exposed under the condition that the wettability variable layer is facing to the photocatalyst layer containing a photocatalyst, and the wettability variable layer before an exposure: contains an organopolysiloxane which is a co-hydrolysis condensation polymer obtained using (A) one type or two or more types of organopolysiloxane precursors represented by Y n SiX (4-n) (Y represents an alkyl group or a fluoroalkyl group, or a substituent containing these groups, X represents an alkoxyl group, an acetyl group or a halogen, a letter n subscripted to Y and a letter n in (4-n) subscripted to X are an integer from 1 to 3), and (B) an amorphous silica precursor represented by SiX 4 (X is the same as above) by a mass ratio of(A)/(B)=1/0.1 to 1/20; does not contain the photocatalyst; and wettability of a surface of the wettability variable layer has a contact angle to a liquid having a surface tension of 40 mN/m is 10° or more.