Patent ID: 6988301

Claim:
A method for manufacturing a matrix type actuator, in which a plurality of piezoelectric/electrostrictive elements include at least a piezoelectric/electrostrictive body and at least one pair of electrodes are two-dimensionally arranged on a thick ceramic substrate; characterized in that said method comprising: a step A for obtaining ceramic green lamination structure having through apertures, wherein a plurality of ceramic green sheets including piezoelectric/electrostrictive material as a main component are prepared, said ceramic green sheets are machined with a punch and a die to form apertures at predetermined positions and laminated, and thus the through apertures are formed by connecting said apertures to each other; a step B for preparing ceramic green substrates to be formed as the thick ceramic substrate; a step C for obtaining a sintered lamination structure by laminating said ceramic green lamination structure and said ceramic green substrate and then by sintering and unifying them; and a step D for slicing said sintered lamination structure at the portion corresponding to at least the ceramic green lamination structure obtained in said step A; said method further comprises a process for forming a plurality of independent piezoelectric/electrostrictive elements on the ceramic substrate.