Abstract: A spring member is provided between two pressed bodies facing each other in a first direction and includes base plates stacked in the first direction. Each base plate is provided with spring protrusions protruding toward either one pressed body of the two pressed bodies and pressing the two pressed bodies in directions such that the pressed bodies move away from each other in the first direction. Between two base plates adjacent to each other in the first direction, a base plate positioned closer to the one pressed body is provided with an insertion hole into which a spring protrusion of the other base plate is inserted in a state of penetrating therethrough in the first direction. Among portions in an along-plane direction along a plane orthogonal to the first direction provided with the spring protrusions, the spring constant of at least one portion is different from that of another portion.

Abstract: In a first region, a multilayer body is bent along a first bending line such that a first main surface is located farther on an outer peripheral side than a second main surface. In a second region, the multilayer body is bent along a second bending line such that the first main surface is located farther on an inner peripheral side than the second main surface. In the first region, a first metal foil layer is located farther on an outer peripheral side than a center of the multilayer body. In the second region, a second metal foil layer is located farther on the outer peripheral side than the center of the multilayer body. In the second region, a distance between the second metal foil layer and the second main surface is shorter than a distance between the second metal foil layer and the first main surface.

Abstract: The flow regulating structure comprises a plurality of rail structures. Each rail structure has a plurality of rod-shaped members that are arranged side-by-side with the same direction of extension. The plurality of rail structures are disposed along the direction of gas travel in overlapping positions with space therebetween. The extension directions of the rod-shaped members differ between adjacent rail structures. In each rail structure, the plurality of rod-shaped members are arranged side-by-side with the same direction of extension in both a first virtual plane and a second virtual plane, which face one another in the direction of gas travel, and when viewed from the direction of gas travel, the rod-shaped members disposed on the second virtual plane are positioned between adjacent members among the plurality of rod-shaped members disposed on the first virtual plane.

Abstract: The object detection sensor includes: a sensing unit to detect to-be-detected rays from a target object to output a sensing signal, a control unit to command output of a predetermined detection signal in response to input of sensing signal, a sensor output to output predetermined detection signal in response to command, a test signal reception to receive a test signal, and a test signal response to output a test response signal in response to reception of test signal, and further includes: a learning mode transition input to start a learning mode, a test signal determination to determine a state of received test signal in learning mode, a test signal estimation to estimate a characteristic of test signal from determined state of test signal, and a test signal verification to verify whether estimated characteristic of test signal is included in test signal received by test signal reception.

Abstract: A semiconductor device with favorable electrical characteristics is provided. A semiconductor device with stable electrical characteristics is provided. The semiconductor device is configured to include a first insulating layer, a second insulating layer, a third insulating layer, a first conductive layer, and a semiconductor layer. The semiconductor layer is positioned over the first insulating layer. The first conductive layer is positioned over the semiconductor layer. The second insulating layer covers a side surface and a bottom surface of the first conductive layer. The third insulating layer is in contact with a top surface of the first insulating layer and part of a top surface of the semiconductor layer and covers a side surface of the second insulating layer. The semiconductor layer contains a metal oxide, the first insulating layer and the second insulating layer each contain an oxide, and the third insulating layer contains a metal nitride.

Abstract: A wristwatch includes a circuit board, a feeding coil antenna mounted on or in the circuit board, and a ground conductor disposed in or on the circuit board. The ground conductor includes an outer periphery, an opening, and a slit, which connects an inner periphery of the opening and the outer periphery to each other. A connection conductor is disposed on the circuit board to cross over the slit of the ground conductor to connect portions of the ground conductor to each other. The connection conductor defines a portion of a path of current flowing through the ground conductor in a loop.

Abstract: An antenna device includes a coil antenna including a coil conductor wound around a coil opening, and a planar conductor including a surface facing a portion of the coil opening and a portion of an area including the coil conductor. A minimum separation distance between the coil opening and the planar conductor in a direction perpendicular or substantially perpendicular to the planar conductor is larger than a minimum separation distance between the coil conductor and the planar conductor in the same direction. The planar conductor includes a first region that overlaps the coil opening and a third region that overlaps an outer edge of the coil conductor in plan view of the coil opening, and the first region includes a recessed portion that is recessed in a direction away from the coil conductor.

Abstract: Provided is a semiconductor device with favorable electrical characteristics. Provided is a semiconductor device with stable electrical characteristics. Provided is a manufacturing method of a semiconductor device with a high yield. The manufacturing method includes a first step of forming an insulating film over a substrate, a second step of transferring the substrate in an atmospheric atmosphere, a third step of heating the insulating film, and a fourth step of forming a metal oxide film. The third step and the fourth step are successively performed in an atmosphere where water vapor partial pressure is lower than water vapor partial pressure in the atmospheric air.

Abstract: A flexible display device with high viewability is provided. The display device includes a first substrate, a second substrate, a first element layer, and a second element layer. The first element layer is positioned between the first substrate and the second substrate. The second element layer is positioned between the first substrate and the second substrate. The first element layer and the second element layer overlap with each other in a region. The first substrate and the second substrate have flexibility. The first element layer includes a display element and a first circuit. The display element is electrically connected to the first circuit. The second element layer includes a sensor element. The sensor element has a function of sensing distortion.

Abstract: A highly reliable semiconductor device which uses an oxide semiconductor film for a backplane is provided. A semiconductor device includes a first conductive film, a first insulating film over the first conductive film, an oxide semiconductor film which is over the first insulating film and overlaps with the first conductive film, a second insulating film over the oxide semiconductor film, and a pair of second conductive films electrically connected to the oxide semiconductor film through an opening portion included in the second insulating film. The second insulating film overlaps with a region of the oxide insulating film in which a carrier flows between the pair of second conductive films and overlaps with end portions of the oxide semiconductor film.

Abstract: An antenna device includes a coil antenna including a coil conductor wound around a coil opening, and a planar conductor including a surface facing a portion of the coil opening and a portion of an area including the coil conductor. A minimum separation distance between the coil opening and the planar conductor in a direction perpendicular or substantially perpendicular to the planar conductor is larger than a minimum separation distance between the coil conductor and the planar conductor in the same direction. The planar conductor includes a first region that overlaps the coil opening and a third region that overlaps an outer edge of the coil conductor in plan view of the coil opening, and the first region includes a recessed portion that is recessed in a direction away from the coil conductor.

Abstract: A flexible display device with high viewability is provided. The display device includes a first substrate, a second substrate, a first element layer, and a second element layer. The first element layer is positioned between the first substrate and the second substrate. The second element layer is positioned between the first substrate and the second substrate. The first element layer and the second element layer overlap with each other in a region. The first substrate and the second substrate have flexibility. The first element layer includes a display element and a first circuit. The display element is electrically connected to the first circuit. The second element layer includes a sensor element. The sensor element has a function of sensing distortion.

Abstract: A power transmission system is disclosed in which power is transmitted from a power transmission apparatus to a power receiving apparatus by electric field coupling between active and passive electrodes. The power transmission apparatus includes a step-up/down circuit for stepping up or down a direct voltage and an inverter circuit for converting the direct voltage into an alternating voltage that is output to the active and passive electrodes. The power transmission apparatus controls the step-up/down circuit to sweep a transformation ratio M=Vo1/Vin and detects the ratio M when an input power Pin of the step-up/down circuit is a minimum. The power transmission apparatus drives the step-up/down circuit to obtain the ratio M and perform the power transmission. As a result, there is provided a power transmission system capable of efficiently performing power transmission regardless of the change in a load in the power receiving apparatus.

Abstract: A flexible display device with high viewability is provided. The display device includes a first substrate, a second substrate, a first element layer, and a second element layer. The first element layer is positioned between the first substrate and the second substrate. The second element layer is positioned between the first substrate and the second substrate. The first element layer and the second element layer overlap with each other in a region. The first substrate and the second substrate have flexibility. The first element layer includes a display element and a first circuit. The display element is electrically connected to the first circuit. The second element layer includes a sensor element. The sensor element has a function of sensing distortion.

Abstract: Provided are layered cell sheets, comprising a plurality of layered cell sheets containing myoblasts, in which each cell sheet comprises cell population containing myoblasts with controlled orientations. Preferably provided are the layered cell sheets comprising a region in which the orientations of the cell population containing the myoblasts in each cell sheet are identical to each other.

Abstract: A circuit module equipped with a primary coil of a step-down transformer formed by primary coils of a plurality of transformer elements connected in series with each other and a secondary coil formed by secondary coils of the transformer elements connected in series with each other, includes a printed substrate on which the transformer elements are mounted in a lengthwise direction, a connection terminal coupled to a first end of the primary coil of the step-down transformer and connection terminals coupled to the secondary coil of the step-down transformer, the connection terminals are positioned such that the transformer elements are interposed therebetween. As a result, provided are a transformer module that reduces the effect of a high-voltage portion on a low-voltage portion by securing a distance between the high-voltage portion and the low-voltage portion, and a power reception device and a power transmission device equipped with the transformer module.

Abstract: Provided is a semiconductor device with favorable electrical characteristics. Provided is a semiconductor device with stable electrical characteristics. Provided is a manufacturing method of a semiconductor device with a high yield. The manufacturing method includes a first step of forming an insulating film over a substrate, a second step of transferring the substrate in an atmospheric atmosphere, a third step of heating the insulating film, and a fourth step of forming a metal oxide film. The third step and the fourth step are successively performed in an atmosphere where water vapor partial pressure is lower than water vapor partial pressure in the atmospheric air.

Abstract: An imaging device with high imaging quality capable of being manufactured at low cost is provided. The imaging device includes a first transistor, a second transistor, a third transistor, a fourth transistor, a photodiode, and a capacitor. Each of the first to the fourth transistors includes a first gate electrode and a second gate electrode, and the second gate electrode of each of the first to the fourth transistors and one electrode of the capacitor are electrically connected to an anode electrode of the photodiode.

Abstract: An electric power receiving apparatus of an electric power transmitting system includes an overvoltage suppressing unit connected in parallel to a resonant circuit. The overvoltage suppressing unit is formed by an impedance element. Impedance of the impedance element is set to such a value that a rise in a voltage across at least one pair of electric power receiving electrodes is suppressed as compared to a case in which the impedance element is not connected, in the process in which coupling capacitance Cm between electric power transmitting electrodes and the electric power receiving electrodes changes from a value held while the electric power transmitting electrodes and the electric power receiving electrodes are in a predetermined positional relationship during normal electric power transmission to substantially zero.

Abstract: A measurement apparatus includes a pseudo-coupling circuit, a power reception circuit, and a characteristics measuring unit. The pseudo-coupling circuit includes a first power-transmission-side terminal, a second power-transmission-side terminal, a first power-reception-side terminal, and a second power-reception-side terminal. A capacitor is connected between the first power-transmission-side terminal and the first power-reception-side terminal. A capacitor is connected between the first power-transmission-side terminal and the second power-transmission-side terminal. A capacitor is connected between the first power-reception-side terminal and the second power-reception-side terminal. A power transmission module to be measured is connected to the first and second power-transmission-side terminals. The power reception circuit and the characteristics measuring unit are connected to the first and second power-reception-side terminals.