Patent ID: 8933614
Filing Date: 2015-01-13
Classification: H03H

Abstract:
1. A piezoelectric resonator intended to be mounted on a support and including a first and a second planar tuning fork shaped part arranged in a common plane, the first and the second tuning fork shaped parts each having an inner vibrating arm, an outer vibrating arm and a cross portion, the inner and the outer vibrating arms each having an upper main surface and a lower main surface and two side surfaces extending between the upper and the lower main surfaces, and the inner and outer vibrating arms of the same tuning fork shaped part extending from the cross portion, substantially parallel to each other, and carrying electrodes connected to connection pads, wherein the electrodes comprise central electrodes disposed on the upper and lower main surfaces of the vibrating arms, and lateral electrodes disposed on side surfaces of the vibrating arms, wherein the central electrodes disposed on the outer vibrating arm of either of the tuning-fork shaped parts are connected to the lateral electrodes disposed on the inner vibrating arm of the same tuning-fork shaped part, and the lateral electrodes disposed on the outer vibrating arm of either of the tuning-fork shaped parts are connected to the central electrodes disposed on the inner vibrating arm of the same tuning-fork shaped part, so that the electrodes make the inner and the outer vibrating arms of either tuning fork shaped part oscillate with opposite phase, wherein the piezoelectric resonator is configured to be mounted on the support via a linking part, the linking part being arranged to connect the tips of the inner vibrating arms of the first and the second tuning fork shaped parts so as to link the first and second tuning fork shaped parts together, and wherein the electrodes carried by the first and second tuning fork shaped parts are interconnected through the linking part so as to make the outer vibrating arms of the first and second tuning fork shaped part oscillate with opposite phase.