Patent ID: 6345424
Filing Date: 2002-02-12
Classification: B41J,Y10S,Y10T

Abstract:
A production method for forming a liquid spray head comprising the steps of:(a) forming a diaphragm on a first surface of a substrate made of planar oriented (110) monocrystalline silicon; (b) forming a piezoelectric element by laminating a first electrode, a piezoelectric film and a second electrode arranged on the diaphragm; (c) patterning at least the second electrode and the piezoelectric film into a predetermined shape; (d) protecting the piezoelectric element and the first surface of the substrate; (e) defining a direction in which a liquid chamber of the liquid spray head is to be extended as one of <1I2> direction and 12> direction; and (f) forming the liquid chamber at a predetermined position on a second surface of the substrate, which opposes the first surface thereof, by etching, wherein said steps (a) through (f) are performed in the stated order.