Patent ID: 8791766

Claim:
A resonating element comprising a substrate, the substrate including: a vibrating portion that is in a quadrangle shape with first through fourth sides, that has top and bottom surfaces opposite to each other, and that has a first thickness; a first thick-walled portion that is continuously connected to the first side of the vibrating portion, that has top and bottom surfaces opposite to each other, and that has a second thickness; a second thick-walled portion that is continuously connected to the second side of the vibrating portion and the first thick-walled portion, that has top and bottom surfaces opposite to each other, and that has a third thickness; and a third thick-walled portion that is continuously connected to the third side of the vibrating portion and the first thick-walled portion, that has to and bottom surfaces opposite to each other, and that has a fourth thickness, wherein the first thickness is smaller than the second through fourth thicknesses, and the second thickness is larger than the third and fourth thicknesses, the top and bottom surfaces of the vibrating portion are respectively and continuously connected to the top and bottom surfaces of the first thick-walled portion via a slope, the top surface of the second thick-walled portion is continuously connected to the top surface of the vibrating portion via a slope, and the bottom surface of the second thick-walled portion and the bottom surface of the vibrating portion are continuously connected to each other so as to form a first even surface, and the bottom surface of the third thick-walled portion is continuously connected to the bottom surface of the vibrating portion via a slope, and the top surface of the third thick-walled portion and the top surface of the vibrating portion are continuously connected to each other so as to form a second even surface.