Patent ID: 7298069

Claim:
A crystal unit comprising: a crystal blank provided with a pair of excitation electrodes and a pair of extension electrodes extended from said excitation electrodes; and a mounting member on which a pair of connection terminals is formed, wherein said crystal blank has a first principal surface and a second principal surface, a first inclined surface is formed at a first end of said first principal surface, said first principal surface and said second principal surface being flat-shaped and parallel to each other, and said extension electrodes are extended toward the first end at which said first inclined surface is formed, wherein a conductive material is disposed between said connection terminals and said extension electrodes in such a way that said second principal surface faces said mounting member and said crystal blank is held by said mounting member at the position of the end to which said extension electrodes are extended and electrically connected to said connection terminals; wherein one of the excitation electrodes is arranged on the first principal surface and the other of the excitation electrodes is arranged on the second principal surface opposite the one of the excitation electrodes arranged on the first principal surface, the excitation electrodes being parallel to each other; wherein a second inclined surface is formed at a second end of said crystal blank opposite the first end; and wherein said inclined surfaces are different from each other in size at the respective ends and said extension electrodes are extended toward the greater inclined surface, and the second inclined surface does not extend to said second principal surface.