Abstract: The present invention provides a battery safety test device includes: a mechanical switch element having one end connected to either a battery positive or negative electrode and the other end connected to an electronic switching element; the electronic switching element having one end connected to the mechanical switch element and the other end connected to the other of the battery positive or negative electrode; a voltage sensor for measuring a voltage of the battery after the mechanical switch element and the electronic switching element are turned on; and a current sensor for measuring a current of the battery after the mechanical switch element and the electronic switching element are turned on.

Abstract: A plug connector according to an embodiment of the present disclosure, wherein the housing of the plug connector includes a mating portion extending forward and a latching portion equipped in the housing. The latching portion may include, as a root having a lower end connected to the upper surface of the housing, a root extending to the upper end with the lower end of the route as a first fulcrum to form a cantilever structure; and as a pair of latching arms having a rear end connected to an upper end of the root, a pair of latching arms extending to the front end with the upper end of the root as a second fulcrum to form a pair of hooks. Each front end of the pair of latching arms may include an outward protrusion.

Abstract: Provided is a composition for forming a polyimide film for a cover window capable of satisfying a high performance required for the cover window, a process for preparing the same, and a use thereof. According to an embodiment, the composition may be usefully utilized in flexible display devices of various aspects providing a colorless and transparent film for a cover window that has excellent visibility without optical mura and deterioration in optical properties, and has excellent heat resistance and mechanical properties for use in optical applications.

Abstract: The method for transmitting power wirelessly according to an embodiment may comprise checking a position of a receiving device while wirelessly transmitting power to the receiving device, and changing a charging stop level which is compared with power loss which corresponds to a difference between transmitted power transmitted to the receiving device and received power received by the receiving device when the receiving device is outside a charging area. The receiving device is outside the charging area may be determined based on that the received power is equal to or greater than reference power and a power control level when transmitting the power to the receiving device is equal to or greater than a reference value. The charging stop level may be returned to an original value when the power loss is lower than the changed charging stop level until a predetermined time elapses after changing the charging stop level.

Abstract: A polyimide composition includes a polyimide precursor or a polyimide that includes structural units derived from a first monomer including a diamine-based compound and structural units derived from a second monomer including a cardo group-containing dianhydride-based compound. The cardo group-containing dianhydride-based compound is included in a range from 12 mol % to 20 mol % based on a total number of moles of the second monomer.

Abstract: An electrical connector according to a disclosed embodiment includes a housing having a terminal receiving opening, and a TPA member mounted outside the terminal receiving opening to fix a position of a terminal. The TPA member includes first and second side cantilever arms which are extended from both ends of the TPA member, respectively, and are positioned outside a sidewall of the housing, the housing is not in contact with the TPA member in a preliminary mounting position, and the housing is latch-coupled with the first and second side cantilever arms in a final mounting position.

Abstract: Disclosed is a disc-shaped sample chamber for collecting molten metal, the chamber comprising: a chamber body having a left body and a right body bonded to each other to define a disc-shaped sample space therebetween; an inlet extending upward from the chamber body and connecting the sample space with the outside; and a welded bonding portion disposed on at least one lateral face of the chamber body for bonding the left body and the right body to each other. Further, a probe having the chamber is disclosed.

Abstract: The method of wirelessly transmitting power according to an embodiment may comprise performing an operation of analog ping on each of multiple coils of a primary coil; determining whether there is an object based on a result of the operation of analog ping; determining whether there is a receiving device including a secondary coil that can be coupled to the primary coil by magnetic induction by performing an operation of digital ping when it is determined that there is an object; and wirelessly transmitting power to a receiving device or stopping transmitting power thereto when it is determined that there is the receiving device.

Abstract: The wireless charging device according to an embodiment may comprise a shielding assembly where a shield, a first coil for power transfer by magnetic inductive coupling, and a bracket are formed, an NFC coil fixed to the bracket, and a main PCB including an inverter that converts DC power into AC power and supplies it to the first coil. The bracket may be formed outside the first coil. The shielding assembly may further include a coil connector for connecting the first coil and the NFC coil to the main PCB. The coil connector may consist of a plurality of protruding pins, and the plurality of protruding pins may be inserted into holes formed at corresponding positions on the main PCB so that the first coil and the NFC coil are electrically connected to the main PCB.

Abstract: The wireless charging device according to an embodiment may comprise a rectangular shield assembly in which a shield and a first coil for delivering power to a terminal including a second coil by magnetic induction coupling are formed, a main PCB including an inverter that converts DC power into AC power and supplies it to the first coil, and a sub-PCB attached to one corner of the shield assembly and including a USB Type-C port. The sub-PCB may be disposed outside the first coil. The USB Type-C port may be exposed in a direction perpendicular to a plane on which the terminal is placed.

Abstract: A method for generating a surround view image of a trailer vehicle is proposed. The method includes receiving, by an image processing device of a tractor, first calibration information for a plurality of cameras arranged on a first trailer from an image processing device arranged on the first trailer, receiving, by the image processing device of the tractor, trailer image information comprising images captured by the plurality of cameras of the first trailer from the first trailer, generating, by the image processing device of the tractor, tractor image information comprising images captured by a plurality of cameras arranged on the tractor and generating, by the image processing device of the tractor, the surround view image of the trailer vehicle using the trailer image information, the tractor image information, and the first calibration information.

Abstract: A dash cam having an anti-theft function includes an image acquisition unit configured to capture an image, a housing, in which the image acquisition unit is built in, mounted inside a vehicle so that the image acquisition unit images a space including at least a portion of a part constituting the vehicle, an image storage unit configured to store a first image and a second image captured by the image acquisition unit, an image analysis unit configured to compare the first image with the second image and determine whether the vehicle in which the housing is mounted has been changed, and a theft signal output unit configured to output a preset theft occurrence signal based on a determination that the vehicle has been changed by the image analysis unit.

Abstract: A capacitor structure includes lower and electrodes, and a capacitor dielectric film interposed therebetween. The lower electrode includes a lower electrode film including a first metal element, a first doped oxide film including a second metal element and an oxide of the first metal element, and a first metal oxide film. The first metal oxide film includes an oxide of the first metal element and is free of the second metal element. The upper electrode includes an upper electrode film including the first metal element, a second doped oxide film including the second metal element and an oxide of the first metal element, and a second metal oxide film that includes an oxide of the first metal element, and is free of the second metal element.

Abstract: The method for transmitting power wirelessly may comprise: transmitting power wirelessly to a receiving device, receiving, from the receiving device, a first Q factor including a Q frequency and a Q value measured by the receiving device while transmitting the power, and obtaining a second foreign object boundary line by adjusting a first foreign object boundary line based on a first Q point corresponding to the first Q factor in a Q plane with a Q frequency and a Q value as two axes. The method may detect, as a second Q factor, a Q frequency and a Q value of a resonance circuit included in a transmitting apparatus, and continue or stop a power transmitting operation based on a comparison of a second Q point corresponding to the second Q factor and the second foreign object boundary line in the Q plane.

Abstract: This application relates to a wrought magnesium alloy and a method of manufacturing the same, and a high-speed extrusion method for manufacturing an extrudate using the same. In one aspect, the magnesium alloy includes 2.0 wt % to 8.0 wt % of bismuth (Bi), 0.5 wt % to 6.5 wt % aluminum (Al), the balance of magnesium (Mg), and inevitable impurities. Using a magnesium alloy for high-speed extrusion according to the present disclosure, it is possible to manufacture a magnesium alloy extrudate having a good surface quality without hot cracking even under high-temperature (extrusion temperature: 300° C. to 450° C.) and high-speed (die-exit speed: 40 m/min to 80 m/min) extrusion conditions. Furthermore, the extrudate manufactured from the magnesium alloy exhibits greatly improved strength and elongation compared to existing magnesium extrudates even when the alloy does not contain a rare-earth metal.

Abstract: The method for transmitting power wirelessly according to an embodiment may comprise checking a position of a receiving device while wirelessly transmitting power to the receiving device, and changing a charging stop level which is compared with power loss which corresponds to a difference between transmitted power transmitted to the receiving device and received power received by the receiving device when the receiving device is outside a charging area. The receiving device is outside the charging area may be determined based on that the received power is equal to or greater than reference power and a power control level when transmitting the power to the receiving device is equal to or greater than a reference value. The charging stop level may be returned to an original value when the power loss is lower than the changed charging stop level until a predetermined time elapses after changing the charging stop level.

Abstract: A method of manufacturing a CNT paste emitter in accordance with an exemplary embodiment of the present disclosure includes a process of mixing first CNT powder, graphite nanoparticles, SiC nanoparticles, Ni nanoparticles, a dispersant and distilled water and then performing a dispersion process by means of ultrasonication, a process of acquiring second CNT powder by filtering a solution dispersed during the dispersion process, a process of mixing the second CNT powder with a graphite binder and then preparing a CNT paste by means of ball milling, and a process of forming an interface layer on a metal or graphite substrate and then bonding the CNT paste.

Abstract: Semiconductor devices are provided. The semiconductor devices includes a landing pad on a substrate, a lower electrode on the landing pad and connected to the landing pad, a capacitor dielectric film that is on the lower electrode and includes both a tetragonal crystal system and an orthorhombic crystal system, a first doping layer that is between the lower electrode and the capacitor dielectric film and includes a first metal, and an upper electrode on the capacitor dielectric film.

Abstract: A lift pin module includes a lift pin which includes a head portion disposed at a first end of the lift pin, and a connecting portion disposed at a second end of the lift pin opposite to the first end, the head portion connected to a stage disposed inside a semiconductor process chamber, and the head portion extending in a first direction; an upper weight which includes a side surface with an opening extending in the first direction, the opening configured to receive the lift pin therein, and the upper weight surrounding the connecting portion of the lift pin; and a lower weight screwed to the upper weight, the lower weight disposed below the upper weight.

Abstract: This application relates to a wrought magnesium alloy and a method of manufacturing the same, and a high-speed extrusion method for manufacturing an extrudate using the same. In one aspect, the magnesium alloy includes 2.0 wt % to 8.0 wt % of bismuth (Bi), 0.5 wt % to 6.5 wt % aluminum (Al), the balance of magnesium (Mg), and inevitable impurities. Using a magnesium alloy for high-speed extrusion according to the present disclosure, it is possible to manufacture a magnesium alloy extrudate having a good surface quality without hot cracking even under high-temperature (extrusion temperature: 300° C. to 450° C.) and high-speed (die-exit speed: 40 m/min to 80 m/min) extrusion conditions. Furthermore, the extrudate manufactured from the magnesium alloy exhibits greatly improved strength and elongation compared to existing magnesium extrudates even when the alloy does not contain a rare-earth metal.