METHOD OF MAKING PIEZOELECTRIC PRESSURE-SENSITIVE KEY OR KEYBOARD AND PRODUCT OF THE METHOD

摘要

PURPOSE: A method of making piezoelectric pressure-sensitive key or keyboard and product of the method are provided to can be made by a method in which manual operations are significantly reduced or substantially eliminated and in which the laborious mounting of individual piezoelectric structural elements can be omitted. CONSTITUTION: A base layer(1) having at least one first electrically conductive area(2) is formed. At least one thin layer of a fluid piezoelectric precursor material onto the at least one first electrically conductive area is applied. The at least one thin layer of the precursor material is transformed to an essentially coherent and uniform solid film(3) of a composite piezoelectric material firmly adhering to the first electrically conductive area. A second electrically conductive area(4) spaced from the first electrically conductive area(2) is formed. The solid composite piezoelectric material(3) which bridges the space between the electrically conductive areas for providing at least one essentially monolithic piezoelectric element is firmly adhered to the base layer(1). The composite piezoelectric material(3) with respect to the first and second electrically conductive areas is polarized.