Abstract: A resonator element includes a base, a quartz crystal resonator blank which is integrally disposed with the base, and has a pair of vibrating arms which are disposed in parallel in an X axial direction, and extend from the base in a Y? axial direction, the vibrating arms include arms, hammerheads which are positioned on tip end sides of the arms, and are longer than the arms in the X axial direction, a relationship of 0.033×T [?m]<W4<0.330×T [?m] is satisfied when the thickness of the vibrating arm is set to T in thickness, and a distance between the hammer heads in the X axial direction is set to W4.

Abstract: A quartz crystal resonator element includes a first electrode pad and a second electrode pad disposed on a lower surface of a support arm, and cut sections disposed in both principal surfaces (upper and lower surfaces) of the support arm between the first and second electrode pads so as to overlap each other, and the cut sections extend so that the support arm is cut from the side surface in the +X-axis direction of the support arm to the ?X-axis direction, and are provided with first surfaces roughly perpendicular to the X axis and first and second tilted surfaces extending in the +X-axis direction.

Abstract: A resonator includes a resonator element including a base section, vibrating arms extending from the base section, and a support arm disposed between the vibrating arms, a package adapted to support the resonator element, and electrically-conductive adhesives adapted to fix the support arm to the package, the support arm includes a tip portion and a width-decreasing portion having a width smaller than the width of the tip portion, and the electrically-conductive adhesive has contact with at least a part of the width-decreasing portion in a planar view.

Abstract: A resonator element is provided. A base portion includes a first base portion, a second base portion, and a connecting portion. The base portion includes a width-decreasing portion that is provided at an end of the connecting portion on the first base portion side and that has a width along an X-axis direction which continuously decreases toward the second base portion. An outer edge of the width-decreasing portion and an outer edge of the connecting portion form a continuous line that does not include a corner portion, when seen in a plan view. When an angle between a tangent of a portion of the curved line on the first base portion side and a segment parallel to the X-axis direction is set to ?, a relation of 0°<?<90° is satisfied.

Abstract: A crystal resonator element include a pair of resonating arms extending from a base, the resonating arms includes a groove, a slope portion is formed in a connection portion of the resonating arms to the base so that a distance between the groove and the outer edge of each of the resonating arms increases as it approaches the base from the resonating arms, and a non-electrode region which extends over a range of areas from a connection portion connected to a first side surface formed along the longitudinal direction of the groove and a connection portion connected to a second side surface facing the first side surface with a bottom portion disposed there between and in which excitation electrodes are not formed is provided in the groove in at least a part of the bottom portion positioned in the slope portion.

Abstract: An MEMS vibrator includes a substrate, a fixation section disposed above a principal surface of the substrate, a support section extending from the fixation section, and a vibrating body (an upper electrode) separated from the substrate and supported by the support section in a node part of a vibration, and the vibrating body is a 2n-fold rotationally symmetric body having 2n beams radially extending from a node part of a vibration, wherein n is a natural number.

Abstract: A resonator includes: a resonator element including a base portion, and a pair of vibrating arms which are integrally provided with the base portion, extend in a first direction from the base portion, and are arranged in a second direction orthogonal to the first direction; a base which supports the resonator element; and a fixing portion which fixes the resonator element with respect to the base, and the resonator element is configured so as to satisfy conditions shown by the following formula (1). Q Ln < Q 1 ? f n f 1 ? ( L 1 L n - 1 ) - 1 .

Abstract: A resonator element satisfies, when a shortest distance between a first end portion and a second end portion of a base is Wb [m], an effective width of the base in a Y axis direction is We [m], and a Q value of the resonator element is Q, the following expressions (A) and (B). Q={(?·Cp)/(c·?2·?)}×[{1+(2·?·Cp·We2·f/(?·k))2}/(2·?·Cp·We2·f/(?·k))]??(A) 0.81?Wb/We?1.

Abstract: A resonator element includes: a base portion; a vibrating arm including an arm portion, extending from the base portion, and a wide portion which is connected to a distal end of the arm portion and has a width larger than that of the arm portion; a first driving electrode provided in the vibrating arm; and a weight layer which is provided in the wide portion and has a thickness larger than that of the first driving electrode. The weight layer includes a first weight portion, and a second weight portion which is disposed on the base portion side with respect to the first weight portion and has a fixed-width portion having a width smaller than that of the first weight portion.

Abstract: A resonator includes a resonator device, a package on which the resonator device is mounted, and conductive adhesives which fix the resonator device to the package. A width of the base portion of the resonator device is set as W1, a width of a linkage portion is set as W2, a Young's modulus of the conductive adhesives is set as E, a relationship of ?1.3 GPa?log E??0.7 GPa is satisfied, and a relationship of 0.1?W2/W1?0.7 is satisfied.

Abstract: A resonator element includes a base portion, and a vibrating arm which extends from the base portion and on which a weight portion is provided, and the weight portion includes a first weight portion which is disposed on one main surface of a distal end portion of the vibrating arm, and a second weight portion which is disposed on the distal end side with respect to the first weight portion and has a thickness smaller than that of the first weight portion. The vibrating arm transmits an energy beam, and a laser incidence area where incidence of the energy beam to the inside of the vibrating arm is allowed, is disposed in a position of the other main surface on the opposite side of the vibrating arm overlapped with the second weight portion.

Abstract: Grooves are provided on two main surfaces of a vibration arm. When a thickness of the vibration arm is T, a width of the main surface between an outer edge of the vibration arm and the groove in a plan view along a direction orthogonal to the extending direction of the main surface is W, a sum of depths of the grooves is ta, and ta/T is ?, a region that satisfies a relationship of 4.236×10×?2?8.473×10×?+4.414×10 [?m]?W [?m]??3.367×10×?2+7.112×10×??2.352×10 [?m], and 0.75??<1.00 is present on at least a part of the vibration arm in the extending direction. When a length of the vibration arm in the extending direction is L, and a length of the weight section in the extending direction is H, a relationship of 0.012<H/L<0.30 is satisfied.

Abstract: A resonator element includes a resonator blank having a base portion, a vibrating arm, a linking portion, and a connecting portion connects the base portion and the linking portion to each other, in which, when a thickness of the resonator blank is set to T, a width of the base portion is set to W1, and a width of the connecting portion is set to W2, a relationship of 50 ?m?T?210 ?m is satisfied, and a relationship of 0.067?W2/W1?0.335 is satisfied, and in which, when a width of the arm section of the vibrating arm is set to W3, and a width of the hammer head is set to W4, a relationship of W4?2.8×W3 is satisfied.

Abstract: A resonator element includes a base, a quartz crystal resonator blank which is integrally disposed with the base, and has a pair of vibrating arms which are disposed in parallel in an X axial direction, and extend from the base in a Y? axial direction, the vibrating arms include arms, hammerheads which are positioned on tip end sides of the arms, and are longer than the arms in the X axial direction, a relationship of 0.033×T [?m]<W4<0.330×T [?m] is satisfied when the thickness of the vibrating arm is set to T in thickness, and a distance between the hammer heads in the X axial direction is set to W4.

Abstract: A resonator element includes a base section, a pair of vibrating arms extending from the base section, and a holding arm extending from the base section between the pair of vibrating arms. The vibrating arms include arm sections extending from the base section and hammerheads provided at the distal end sections of the arm sections. When the mass of the vibrating arms is represented as M1 and the mass of the holding arm is represented as M2, a relation of M1>M2 is satisfied.

Abstract: A resonator element includes a quartz crystal resonator blank provided with a base portion, vibrating arms extending from one end side of the base portion, a connecting portion which is disposed on the other end side of the base portion, and a coupling portion, located between the base portion and the connecting portion, which couples the base portion to the connecting portion. When a thickness of the quartz crystal resonator blank is set to T, a width of the base portion is set to W1, and a width of the coupling portion is set to W2, a relation of 110 ?m?T?210 ?m is satisfied, and a relation of 0.469?W2/W1?0.871 is satisfied.

Abstract: A MEMS vibrator includes: a substrate; a supporting portion which is connected to the substrate; a base portion which is connected to the supporting portion; and a plurality of vibration portions which is separated from the substrate and extends in different directions from each other from the base portion, and in which the adjacent vibration portions vibrate in a phase of a reverse direction to each other. In the vibration portion, the base portion has a vibration node, and at least a part of the supporting portion is overlapped with the vibration node in a planar view.

Abstract: A MEMS vibrator includes: a base portion; a plurality of vibration reeds which extends from the base portion; a supporting portion which extends from a vibration node portion of the base portion; a fixing portion which is connected with the supporting portion; and a substrate in which the fixing portion is disposed on a main surface. The plurality of vibration reeds is separated from the substrate.

Abstract: A piezoelectric substrate includes vibrating arms, a base portion to which one end portion of each vibrating arm is connected, spindle portions formed in the other end portion of each vibrating arm, formed to have a large width, and having first groove portions formed therein, and second groove portions that are formed along the resonator center line of each vibrating arm, and flexure-torsional combined resonator is excited. A piezoelectric resonator element has flexural resonator of flexure-torsional combined resonator that is excited as its principal resonator and sets the cutting angle of the piezoelectric substrate, the widths and the depths of the first groove portion and the second groove portion, and the thickness of the vibrating arm such that the frequency-temperature characteristics represent third-order characteristics with respect to the temperature.

Abstract: In a resonator element, when a width of each of arm portions of vibrating arms along an X-axis direction is set to W1, a width of each of two portions with a groove interposed therebetween, along the X-axis direction, in a principal surface of the vibrating arm is set to W3, and 2×W3/W1 is set to ?, the relation of 14.2%<?<100% is satisfied.