Abstract: A laser processing method includes: holding a back surface side of a workpiece by a holding table such that a front surface side of the workpiece is exposed; and applying a laser beam from a laser beam irradiation unit along a plurality of planned division lines from the front surface side of the workpiece held by the holding table. In the applying, the laser beam is applied while changing an irradiation position of the laser beam on a front surface of the workpiece by a laser beam scanning unit disposed between an oscillator that oscillates the laser beam and a condenser that condenses light from the oscillator.

Abstract: A pen-type electronic apparatus is provided that includes a cylindrical housing having a grip portion configured to be gripped by a user; a pen shaft housed inside the housing; a sheet-like pressure sensor wound around a position that overlaps the grip portion on an outer surface of the pen shaft or an inner surface of the housing; and a cushion material either between the pen shaft and the pressure sensor or between the pressure sensor and the housing. The pressure sensor has a low-sensitivity region in a central portion of the grip portion along a long axis direction of the pen shaft. The low-sensitivity region has a lower sensitivity for detecting pressure from the user than other regions of the pressure sensor.

Abstract: A secondary battery that includes a wound electrode assembly in which a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode are wound about a winding axis; and a current collecting tab at a first end of the wound electrode assembly along a direction of the winding axis, wherein the wound electrode assembly has a separator extension portion in which the separator extends more than the positive electrode and the negative electrode toward a second end of the wound electrode assembly along the direction of the winding axis, the second end being opposite the first end, and the separator has a bent shape that protrudes toward an outer peripheral side of the wound electrode assembly at least at a part of the separator extension portion in a sectional view passing through the winding axis.

Abstract: A method of processing a plate-shaped workpiece includes a sheet affixing step of laying a thermocompression bonding sheet on a surface of the workpiece and heating and pressing the thermocompression bonding sheet against the workpiece to affix the thermocompression bonding sheet to the workpiece, a laser beam applying step of applying a laser beam having a wavelength absorbable by the workpiece to another surface of the workpiece along a projected dicing line established thereon, thereby processing the workpiece along the projected dicing line, and a sheet joining step of pressing the thermocompression bonding sheet while reheating the thermocompression bonding sheet to soften the same, so that the thermocompression bonding sheet is joined up by closing dividing grooves or through holes made in the thermocompression bonding sheet when the workpiece is processed in the laser beam applying step.

Abstract: A bending sensor that includes: a piezoelectric film having a principal surface and an end surface; a bendable substrate; and an adhesive on the principal surface of the piezoelectric film and that bonds the piezoelectric film to the bendable substrate, wherein the adhesive covers the end surface in at least a bending portion of the piezoelectric film that is configured to bend together with the bendable substrate.

Abstract: A method of processing a plate-shaped workpiece includes a sheet affixing step of laying a thermocompression bonding sheet on a surface of the workpiece and heating and pressing the thermocompression bonding sheet against the workpiece to affix the thermocompression bonding sheet to the workpiece, a laser beam applying step of applying a laser beam having a wavelength absorbable by the workpiece to another surface of the workpiece along a projected dicing line established thereon, thereby processing the workpiece along the projected dicing line, and a sheet joining step of pressing the thermocompression bonding sheet while reheating the thermocompression bonding sheet to soften the same, so that the thermocompression bonding sheet is joined up by closing dividing grooves or through holes made in the thermocompression bonding sheet when the workpiece is processed in the laser beam applying step.

Abstract: A heat exchanger in which an end portion of a heat exchange element is appropriately joined to an insertion hole of a header. The heat exchanger includes a heat exchange element extending in a first direction and a header to which the heat exchange element is connected. The heat exchange element includes at least one heat transfer tube extending in the first direction and a fin provided on part of an edge portion of the at least one heat transfer tube in a second direction crossing orthogonally with the first direction. An end portion in the first direction of the heat exchange element includes an insertion part being inserted into an interior of the header, an abutment part abutting the header in a part other than the insertion part, and a spaced-apart part being spaced apart from the header in a part other than the insertion part.

Abstract: An electronic device is provided that includes a first body, a second body having a structure that rotates with respect to the first body about a central axis, a first sensor that outputs a first detection signal having a first output value indicating that an open angle formed by the first body and the second body is a reference angle, a second sensor that outputs a second detection signal having a second output value that changes under an influence of a change in the open angle, and a control unit that calculates the open angle based on the first detection signal and the second detection signal.

Abstract: A secondary battery that includes a wound electrode assembly in which a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode are wound about a winding axis; and a current collecting tab at a first end of the wound electrode assembly along a direction of the winding axis, wherein the wound electrode assembly has a separator extension portion in which the separator extends more than the positive electrode and the negative electrode toward a second end of the wound electrode assembly along the direction of the winding axis, the second end being opposite the first end, and the separator has a bent shape that protrudes toward an outer peripheral side of the wound electrode assembly at least at a part of the separator extension portion in a sectional view passing through the winding axis.

Abstract: Air heat exchangers are composed of a first air heat exchanger through a fourth air heat exchanger, which are formed in a L shape, which include long side portions and short side portions in a state where one end portion sides in an extension direction of tubes, in which a coolant is flowed, are bent; and each of the short side portions is disposed at a short hand side of a rectangular shape, in such a way that an arrangement shape of the first air heat exchanger through the fourth air heat exchanger is formed as a frame shape having a rectangular shape viewed from a plane.

Abstract: Air heat exchangers are composed of a first air heat exchanger through a fourth air heat exchanger, which are formed in a L shape, which include long side portions and short side portions in a state where one end portion sides in an extension direction of tubes, in which a coolant is flowed, are bent; and each of the short side portions is disposed at a short hand side of a rectangular shape, in such a way that an arrangement shape of the first air heat exchanger through the fourth air heat exchanger is formed as a frame shape having a rectangular shape viewed from a plane.

Abstract: Air heat exchangers are composed of a first air heat exchanger through a fourth air heat exchanger, which are formed in a L shape, which include long side portions and short side portions in a state where one end portion sides in an extension direction of tubes, in which a coolant is flowed, are bent; and each of the short side portions is disposed at a short hand side of a rectangular shape, in such a way that an arrangement shape of the first air heat exchanger through the fourth air heat exchanger is formed as a frame shape having a rectangular shape viewed from a plane.