US Patent No. 10,043,717


Patent No. 10,043,717
Issue Date August 07, 2018
Title Electronic Device
Inventorship Junichi Arai, Saitama (JP)
Masakazu Nishiwaki, Saitama (JP)
Daisaku Nagata, Saitama (JP)
Assignee NIHON DEMPA KOGYO CO., LTD., Tokyo (JP)

Claim of US Patent No. 10,043,717

1. A crystal oscillator, comprising: a first board, being for mounting an electronic component, and the first board including at least one first hole portion; a second board being mounted on a printed board, and the second board including at least one second hole portion; and at least one support pillar, being inserted into the first hole portion and being disposed in the second hole portion such that the first board and the second board are held mutually separated, wherein the second hole portion is non-through hole and including a tapered surface, and the tapered surface inclines symmetrically toward a center portion of the second hole portion from a surface of the second board; a first metal film attached over the tapered surface and electrically connected to the at least one support pillar.