Patent ID: 8178285

Claim:
A manufacturing method of a piezoelectric/electrostrictive film type element comprising a substrate in which a cavity is formed, and a laminated vibrator made of laminations of an electrode film and a piezoelectric/electrostrictive film provided on a first main surface of said substrate so as to position with said cavity in a plane position, the manufacturing method comprising the steps of: (a) forming a first photosensitive film on the first main surface of said substrate; (b) irradiating a light from a side of a second main surface of said substrate to transmit irradiated light used for exposure through said substrate and to depict a latent image, in which a plain shape of said cavity is transferred, on said first photosensitive film, wherein the second main surface is opposite to the first main surface of said substrate; (c) removing said first photosensitive film formed in a region where said cavity is formed, by development; (d) forming a lowermost film constituting said laminated vibrator in a region where said first photosensitive film is removed; and (e) removing said first photosensitive film remaining in a region where said cavity is not formed.