The technology of this application relates to an actuating device, a camera module, and an electronic device. In the actuating device, an actuator is configured to include an actuating magnetic component, a power supply apparatus, and at least one coil. The power supply apparatus is electrically connected to the coil, and the coil is disposed in a magnetic field of the actuating magnetic component. When a current is supplied to the coil, the coil or the actuating magnetic component moves under an action of the magnetic field. In this case, the coil or the actuating magnetic component can drive a motor carrier to move, to drive a lens of the camera module to move, so that zooming of the camera module is completed.

The technology of this application relates to an actuating device, a camera module, and an electronic device. In the actuating device, an actuator is configured to include an actuating magnetic component, a power supply apparatus, and at least one coil. The power supply apparatus is electrically connected to the coil, and the coil is disposed in a magnetic field of the actuating magnetic component. When a current is supplied to the coil, the coil or the actuating magnetic component moves under an action of the magnetic field. In this case, the coil or the actuating magnetic component can drive a motor carrier to move, to drive a lens of the camera module to move, so that zooming of the camera module is completed.

A magnetic field generator includes: an upper layer coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. High-frequency currents of opposite phases are passed through the upper layer coil and the lower layer coil, respectively, and a length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.

A magnetic field generator includes: an upper layer coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. High-frequency currents of opposite phases are passed through the upper layer coil and the lower layer coil, respectively, and a length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.

An exemplary wearable sensor unit includes 1) a magnetometer comprising a vapor cell comprising an input window and containing an alkali metal, and a light source configured to output light that passes through the input window and into the vapor cell along a transit path, and 2) a temperature control circuit external to the vapor cell and configured to create a temperature gradient within the vapor cell, the temperature gradient configured to concentrate the alkali metal within the vapor cell away from the transit path of the light.

An exemplary wearable sensor unit includes 1) a magnetometer comprising a vapor cell comprising an input window and containing an alkali metal, and a light source configured to output light that passes through the input window and into the vapor cell along a transit path, and 2) a temperature control circuit external to the vapor cell and configured to create a temperature gradient within the vapor cell, the temperature gradient configured to concentrate the alkali metal within the vapor cell away from the transit path of the light.

A driving backplane, a transfer method for a light-emitting diode chip (21), and a display apparatus. The driving backplane comprises: a base substrate (10), a driving circuit, a plurality of electromagnetic structures (13), and a plurality of contact electrodes (12). The plurality of electromagnetic structures (13) in the driving backplane are symmetrically arranged relative to a first straight line (L1) and a second straight line (L2). A current signal can be applied to each electromagnetic structure (13) by means of the driving circuit. Stress generated by a transfer carrier plate (20) according to the magnetic force of each electromagnetic structure (13) moves the transfer carrier plate (20). When the transfer carrier plate (20) is stress balanced in each direction parallel to the surface of the transfer carrier plate (20), the light-emitting diode chip (21) is precisely aligned to corresponding contact electrodes (12).

A driving backplane, a transfer method for a light-emitting diode chip (21), and a display apparatus. The driving backplane comprises: a base substrate (10), a driving circuit, a plurality of electromagnetic structures (13), and a plurality of contact electrodes (12). The plurality of electromagnetic structures (13) in the driving backplane are symmetrically arranged relative to a first straight line (L1) and a second straight line (L2). A current signal can be applied to each electromagnetic structure (13) by means of the driving circuit. Stress generated by a transfer carrier plate (20) according to the magnetic force of each electromagnetic structure (13) moves the transfer carrier plate (20). When the transfer carrier plate (20) is stress balanced in each direction parallel to the surface of the transfer carrier plate (20), the light-emitting diode chip (21) is precisely aligned to corresponding contact electrodes (12).

A drive device capable of reducing a possibility that magnets or contact members are broken by repulsive forces generated between magnets arranged in the Halbach array. The drive device includes magnet units each including a plurality of permanent magnets arranged in the Halbach array and a holding member that holds the permanent magnets, a fixed portion, a movable portion that is movable with respect to the fixed portion, and coils. The magnet units are supported by one of the fixed portion and the movable portion. The coils are supported by the other of the fixed portion and the movable portion in a manner opposed to the magnet units, respectively. The holding member has elastic shape portions in contact with the permanent magnets on surfaces thereof opposed to the permanent magnets in a magnet arrangement direction of the permanent magnets arranged in the Halbach array.

A drive device capable of reducing a possibility that magnets or contact members are broken by repulsive forces generated between magnets arranged in the Halbach array. The drive device includes magnet units each including a plurality of permanent magnets arranged in the Halbach array and a holding member that holds the permanent magnets, a fixed portion, a movable portion that is movable with respect to the fixed portion, and coils. The magnet units are supported by one of the fixed portion and the movable portion. The coils are supported by the other of the fixed portion and the movable portion in a manner opposed to the magnet units, respectively. The holding member has elastic shape portions in contact with the permanent magnets on surfaces thereof opposed to the permanent magnets in a magnet arrangement direction of the permanent magnets arranged in the Halbach array.