Patent ID: 7770273
Filing Date: 2010-08-10
Classification: H01L,H03H,Y10T

Abstract:
1. A method of manufacturing a piezoelectric element, comprising the steps of: applying a masking agent to a surface of a piezoelectric material to form a film of the masking agent on the surface of the piezoelectric material; patterning the film of the masking agent into a predetermined masking pattern; selectively applying an oil repellent to surface portions of the substrate which are not covered with the patterned film; holding the patterned film in contact with a vapor of a solvent for the masking agent, diluted with an inert gas, so as to fluidize the film to a domed shape on the surface of the piezoelectric material, wherein the vapor diluted with the inert gas is formed by bubbling the solvent with the inert gas; curing the dome-shaped film; and dry etching the piezoelectric material together with the cured film, so as to process the piezoelectric material into a three-dimensional convex profile corresponding to thickness distribution of the domed shape.