Crystal devices using a quartz resonator element and its manufacturing method and a quartz crystal resonator element as well as an electronic device using the mobile telephone and a quartz crystal device utilizing crystal devices,

摘要

PPROBLEM TO BE SOLVED: To provide a crystal oscillator piece that is easily manufactured by simultaneously performing its external formation etching and groove etching and reducing manufacturing processes in manufacturing the crystal oscillator piece, method of manufacturing the same, a crystal device using the crystal oscillator piece, and a mobile telephone and electronic apparatus using the crystal device. PSOLUTION: The crystal oscillator piece is entirely formed of crystal and provided with a base 51 and a pair of oscillation arms 34 and 35 extending in parallel from the base, wherein the respective oscillation arms have groove parts 56 and 57 extending in a length direction. At the groove parts of the respective oscillation arms, a plurality of small grooves 61 and 62 partitioned in a width direction are parallely and continuously formed along the length direction of the respective oscillation arms. PCOPYRIGHT: (C)2009,JPO&INPIT