Patent ID: 8382995
Filing Date: 2013-02-26
Classification: H03H,Y10T

Abstract:
1. A method for manufacturing a piezoelectric device, comprising: on a base substrate, forming an array of device bases separated one from the other by cutting grooves defined on one surface of the base substrate, the cutting grooves having tapered sides and extending depthwise into the base substrate, the cutting grooves defining therebetween a size of a piezoelectric vibrating device of the array; on a frame substrate made of a piezoelectric material, forming an array, corresponding to the array of device bases, of device frames each being of the size and surrounding a respective piezoelectric vibrating piece; on a lid substrate, forming an array, corresponding to the array of device bases, of device lids each being of the size; sandwiching the frame substrate between the base substrate and lid substrate with the device bases, device frames, and device lids being aligned with each other and with the surface defining the cutting grooves facing outward; bonding the sandwiched frame substrate to the base substrate and lid substrate to form a package substrate comprising multiple piezoelectric devices; forming a metal film extending from the one surface to the tapered sides; plating the metal film to define at least one external electrode for each piezoelectric vibrating device of the array; mounting the base substrate on a dicing sheet such that the surface including the cutting grooves faces the dicing sheet; and using a dicing blade, cutting depthwise through the package substrate from the lid substrate to the cutting grooves.