Patent ID: 8881353

Claim:
A method of producing a piezoelectric/electrostrictive film type device comprising: a substrate formed with a cavity; and a vibrating laminate obtained by laminating electrode films and a piezoelectric/electrostrictive film which are aligned with a plane position of said cavity, on a first principal surface of said substrate, the method comprising the steps of: (a) producing said substrate; (b) forming a first photoresist film on the first principal surface of said substrate; (c) irradiating said substrate with light from a second principal surface side to describe a latent image obtained by transferring a plane shape of said cavity to said first photoresist film by causing light with which said substrate is irradiated from the second principal surface to expose said first photoresist, said first principal surface being opposite to said second principal surface; (d) removing said first photoresist film formed in a region where said cavity is formed or a region where said cavity is not formed, by developing to form a first photoresist film pattern; (e) forming a lowermost electrode film constituting said vibrating laminate employing said first photoresist film, said lowermost electrode film comprising a plating film; and (f) forming films other than said lowermost electrode film among the electrode films and the piezoelectric/electrostrictive film constituting said vibrating laminate.