Abstract: A liquid container is configured to be refilled with a liquid from outside, the liquid container including a containing portion that contains the liquid, an inlet that is in communication with the containing portion and through which the liquid is poured, a lid portion that has an insertion portion to be inserted into the inlet and is configured to turn around a turning axis between a closed state in which the inlet is closed by inserting the insertion portion into the inlet and an open state in which the insertion portion is separated from the inlet, and a cover portion that covers the insertion portion in the open state, in which, when the lid portion is in the open state, the insertion portion does not project further than the cover portion when viewed in an axial direction of the turning axis.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A piezoelectric vibration element includes a piezoelectric substrate including (i) an excitation portion and (ii) a peripheral portion that is integrally arranged at a periphery of the excitation portion and whose thickness is smaller than that of the excitation portion. The piezoelectric vibration element further includes excitation electrodes that are arranged in a front-and-rear relationship on front and rear principal faces of the piezoelectric substrate. The excitation portion includes a first portion that is at a location of a maximum thickness of the excitation portion and a side face that is connected to (i) a principal face of the first portion and (ii) a principal face of the peripheral portion. The side face includes level difference portions having a level difference and a face that has no level difference from the principal face of the first portion to the principal face of the peripheral portion.

Abstract: A vibrating element includes a piezoelectric substrate having an excitation section adapted to excite a thickness-shear vibration, and provided with a step section in each of side surfaces on both ends, and a peripheral section having a thickness smaller than a thickness of the excitation section, and the peripheral section has at least one projection section disposed on both principal surfaces in an area where a vibratory displacement when the excitation section excites a vibration is sufficiently attenuated.

Abstract: A mesa-shaped piezoelectric resonator element including a resonator section having a thicker thickness than a peripheral section on the board surface of a piezoelectric substrate formed in a rectangular shape, wherein, when the length of the long side of the piezoelectric substrate is x and the board thickness of the resonator section is t, etching depth y of a level-difference section is set to fulfill a relationship in the following equation, based on the board thickness t. y = - 1.

Abstract: A resonator element includes a thick section, a middle section and a thin section, in which at least the thick section performs thickness shear vibration, in which a first step difference is provided at a boundary between the thick section and the middle section, and a second step difference is provided at a boundary between the middle section and the thin section, on one side of a direction of the thickness shear vibration, in which a first antinode of flexural vibration is located between the first step difference and the second step difference, and in which, a distance between the first antinode and the first step difference is indicated by d1, a distance between the first antinode and the second step difference is indicated by d2, and a wavelength of the flexural vibration is indicated by ?, a relationship of 0?d1??/8 and 0?d2??/8 is satisfied.

Abstract: When a size from a main surface of an outer edge to a step of a first stage of a vibration section is Md1, a size from the step of the first stage to a step of a second stage is Md2, a density of materials of the substrate is dA, a density of materials of the excitation electrode is dB, and a thickness of the excitation electrode on a main surface of a mesa of the second stage is tB, a relationship of ((Md2+(dB/dA)×tB))/Md1?1.4 is satisfied.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes: a substrate; and an electrode that includes a first conductive layer provided on a surface of the substrate, and a second conductive layer, provided on the opposite side to the first conductive layer on the substrate side, which is disposed within an outer edge of the first conductive layer when seen in a plan view from a direction perpendicular to the surface.

Abstract: A resonator element includes a thick section, a middle section and a thin section, in which at least the thick section performs thickness shear vibration, in which a first step difference is provided at a boundary between the thick section and the middle section, and a second step difference is provided at a boundary between the middle section and the thin section, on one side of a direction of the thickness shear vibration, in which a first antinode of flexural vibration is located between the first step difference and the second step difference, and in which, a distance between the first antinode and the first step difference is indicated by d1, a distance between the first antinode and the second step difference is indicated by d2, and a wavelength of the flexural vibration is indicated by ?, a relationship of 0?d1??/8 and 0?d2??/8 is satisfied.

Abstract: A resonator includes: a package; a support section that is provided on a surface of the package; and a vibration element in which an attachment section, which is disposed between an outer edge of a vibration substrate, in which excitation electrodes are provided on main surfaces thereof, and an outer edge of the excitation electrode, is attached to the support section through a conductive adhesive. The attachment section is disposed in a region S obtained by rotating a virtual line which connects the center of the vibration element and one end of the vibration element, in a range of ?35° to +35° of a rotation angle ? about the center, and an attachment area becomes 0.7 mm2 or more.

Abstract: When a length along a vibrating direction of the thickness shear vibration of a multi-stage type mesa substrate of A resonator element is x, a thickness of the vibration section is t, and a distance between the vibration section and the bonding region is y, y is in a range of ?0.0151×(x/t)+0.3471?y??0.0121×(x/t)+0.3471.

Abstract: A piezoelectric resonator element includes a piezoelectric substrate formed of an AT-cut quartz crystal substrate in which the thickness direction thereof is a direction parallel to the Y? axis; and excitation electrodes disposed so as to face vibrating regions on both front and rear principal surfaces of the piezoelectric substrate. The piezoelectric substrate includes a rectangular excitation portion in which sides parallel to the X axis are long sides thereof, and sides parallel to the Z? axis are short sides thereof; and a peripheral portion having a smaller thickness than the excitation portion and formed around the excitation portion. Each of side surfaces of the excitation portion extending in a direction parallel to the X axis is present in one plane, and each of side surfaces of the excitation portion extending in a direction parallel to the Z? axis has a step.

Abstract: A resonating element has a quartz crystal substrate having a vibrating portion and a thin-walled portion that is thinner than the vibrating portion, and a pair of excitation electrodes respectively disposed on opposite surfaces of the vibrating portion. Moreover, in the excitation electrode, each of a pair of sides arranged in a Z?-axis direction is convexly curved toward the center so that the excitation electrode has a constricted portion in which a length in the Z?-axis direction increases gradually from a central portion toward both ends in an X-axis direction.

Abstract: A vibrating element includes a piezoelectric substrate having an excitation section adapted to excite a thickness-shear vibration, and provided with a step section in each of side surfaces on both ends, and a peripheral section having a thickness smaller than a thickness of the excitation section, and the peripheral section has at least one projection section disposed on both principal surfaces in an area where a vibratory displacement when the excitation section excites a vibration is sufficiently attenuated.

Abstract: A piezoelectric vibration element includes a piezoelectric substrate including (i) an excitation portion and (ii) a peripheral portion that is integrally arranged at a periphery of the excitation portion and whose thickness is smaller than that of the excitation portion. The piezoelectric vibration element further includes excitation electrodes that are arranged in a front-and-rear relationship on front and rear principal faces of the piezoelectric substrate. The excitation portion includes a first portion that is at a location of a maximum thickness of the excitation portion and a side face that is connected to (i) a principal face of the first portion and (ii) a principal face of the peripheral portion. The side face includes level difference portions having a level difference and a face that has no level difference from the principal face of the first portion to the principal face of the peripheral portion.