Patent ID: 8214983

Claim:
An improved process for producing a piezoelectric ceramic device comprises the following steps: (A) maintaining a binding area on a top surface of a metal plate, and that the top surface other than the binding area is enveloped, confined and secured in a mold cavity body; (B) coating a metal paste on the binding area; (C) placing a piezoelectric ceramic powder on the metal paste; (D) pressing a pressing pillar on the piezoelectric ceramic powder; (E) adjusting location of the pressing pillar such that the piezoelectric ceramic powder takes a predetermined thickness; (F) securing the pressing pillar in position; (G) heating the mold cavity body so as to sinter the piezoelectric ceramic powder as a sintered body, wherein the metal paste, under a sintering temperature, fails to be chemically combined with the metal plate and the piezoelectric ceramic powder; and (H) heating the mold cavity body so as to treat the sintered body to become a not-yet polarized piezoelectric ceramic sheet.