Abstract: Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.

Abstract: Disclosed is an electronic device that includes a display that outputs execution screens of a plurality of applications, a memory that stores the plurality of applications, and a processor electrically connected with the display and the memory. The processor retrieves a history of one or more applications among the plurality of applications that were previously executed in the electronic device, in response to a user input detected by the electronic device and outputs the history on the display based on information about the one or more applications and information about layouts of execution screens of the one or more applications. If at least one of the one or more applications is selected from the history, the processor outputs an execution screen of the selected application on the display according to the corresponding layout.

Abstract: A method of manufacturing a hot stamping includes: inserting a blank having a plating layer formed on at least one surface of a base material into a heating furnace having a plurality of sections having different temperature increase rate ranges; and multi-stage heating the blank gradually while passing through the plurality of sections. The plurality of sections include: a first heating section having a first average temperature increase rate change rate; a second heating section having a second average temperature increase rate change rate different from the first average temperature increase rate change rate; and a third heating section having a third average temperature increase rate change rate different from the first average temperature increase rate change rate and the second average temperature increase rate change rate. The third average temperature increase rate change rate includes a section in which a positive value is changed to a negative value.

Abstract: According to an aspect of the present disclosure, provided is a method of manufacturing a hot stamping component in which a residual stress analysis value satisfies a preset condition. The method includes heating a blank; forming a molded body by hot stamping the blank; and cooling the molded body to form a hot stamped component. The residual stress analysis value may be a product of a magnitude of an X-ray diffraction analysis (XRD) value obtained by quantifying residual stress by XRD analysis and a magnitude of an electron backscatter diffraction (EBSD) value obtained by quantifying an orientation by EBSD analysis, and the preset condition is about 2.85* 10-4 Degree*MPa/µm2 or greater and about 0.05 Degree*MPa/µm2 or less.

Abstract: Disclosed is a vibration actuator device. The vibration actuator device includes a substrate, lower supports disposed on the substrate and spaced apart from each other in a first direction, an actuator disposed on the lower supports to generate a vibration having a first resonant frequency by an external power, a vibration plate disposed on the actuator to vibrate in accordance with the actuator, and a mass portion disposed on the vibration plate to vibrate in accordance with the actuator and the vibration plate. Here, each of the vibration plate and the mass portion has a second resonant frequency that is less than the first resonant frequency.

Abstract: A shaping method of a solid cosmetic material and a solid cosmetic container filled with the solid cosmetic material, in which a solid cosmetic material used by grinding an upper surface thereof is solidified to fill an inner container of a cosmetic container with an extra space so that the solid cosmetic material does not come into close contact with an inner surface of the inner container of the cosmetic container, a cosmetic material plate on which the cosmetic material is seated is smoothly guided in an up-down direction, and the upper surface of the solid cosmetic material is smoothly cut as a portion of the cosmetic container is rotated so that the solid cosmetic material is discharged by a predetermined amount. An upper surface of the cosmetic material is maintained flat.

Abstract: The embodiments relate to a polyamide-based film that is excellent in optical properties and mechanical properties, to a process for preparing the same, and to a cover window and a display device comprising the same. It comprises a polyamide-based polymer and a filler in an amount of 600 ppm or more relative to the weight of the polyamide-based polymer, wherein when the 3D surface roughness thereof is measured, the number of summits per unit area (Sds) is 4,400/mm2 or less.

Abstract: A cell tray according to one embodiment of the present disclosure is a cell tray that transports a pouch-type battery cell that is pressed and fixed by a lower plate and an upper plate, the cell tray comprising: a cell tray bottom part in which a recessed part corresponding to the lower plate is formed, and an edge part protruding on the cell tray bottom part and located around the recessed part, wherein the lower plate is mounted onto the recessed part.

Abstract: The technology relates to a battery cell jig including a spacer, a battery cell volume measuring apparatus including the battery cell jig, and a battery cell volume measuring method performed by using the apparatus. According to the present invention, it is possible to preventing stagnation of water at a space between the battery cell jig and the spacer when measuring the volume change of the battery cell using the principle of Archimedes by including a slit opened along a longitudinal direction in the spacer.

Abstract: Provided are a hard coating composition for a flexible window cover film, a hard coating layer obtained therefrom, and a flexible window cover film including the same. More particularly, a hard coating composition for a flexible window cover film which includes a high molecular weight epoxy polysiloxane resin, thereby satisfying surface properties such as excellent hardness, wear resistance, scratch resistance, and pressing resistance, and also having excellent flexibility so as to be appropriate for use in a flexible display panel, a hard coating layer obtained therefrom, and a flexible window cover film including the same.

Abstract: The present disclosure relates to a piezoelectric device, and more particularly, to a piezoelectric device including: a piezoelectric actuator; a displacement transmission structure disposed on the piezoelectric actuator; and a displacement amplification structure disposed between the piezoelectric actuator and the displacement transmission structure. Here, the displacement amplification structure includes: a first displacement amplification structure and a second displacement amplification structure, which cross each other; and a fixing pin that passes through the first displacement amplification structure and the second displacement amplification structure to connect the first displacement amplification structure and the second displacement amplification structure. Also, each of one end of the first displacement amplification structure and one end of the second displacement amplification structure may be fixed on the piezoelectric actuator.

Abstract: Provided are a window cover film and a flexible display panel including the same. More preferably, a window cover film including a transparent film and a hard coating layer and a flexible display panel including the same are provided.

Abstract: Provided is an antistatic polyimide-based film. More particularly, as an antistatic polyimide-based film for a window cover for protecting a surface of a display device, a window cover film having a protective film formed on the polyimide-based film provides an improvement to a problem of not being used as a film for a display window cover because a portion of the protective film remains on a base layer or a hard coating layer without being peeled off due to static electricity in the protective film or the base layer, or a hard coating layer, or the hard coating layer is peeled off with some or all of the protective film when the protective film is peeled off.

Abstract: The present disclosure relates to a stand-alone buoy with a seawater battery, which includes a main body formed to have a predetermined buoyancy so as to float on seawater and provided with a seawater space therein and an inlet formed to introduce the seawater into the seawater space, a position notification part installed on the main body and configured to notify a user of a position of the main body, a solar cell part installed on the main body and configured to generate electricity using sunlight, and a seawater battery unit installed in the seawater space to be submerged in the seawater introduced into the seawater space and configured to react with the seawater to store the electricity provided from the solar cell part and to provide the stored electricity to the position notification part so as to operate the position notification part.

Abstract: The present disclosure relates to a device for playing an acoustic sound and a touch sensation, and more particularly, to a device for emitting a sound to a front surface of a speaker and playing a touch sensation feedback to a rear surface of the speaker through a driving modulation using two or more speakers while simultaneously concentrating an acoustic pressure generated according to a vibration of a membrane of the speaker to a surface of a module through a movement pipe when an audio signal is applied.

Abstract: Provided is a pixel circuit. The pixel circuit includes a conversion element forming a voltage of an input level at a first node, a first transistor adjusting the voltage of the first node to a first level in response to a first signal received at a first time interval, a first capacitive element forming a voltage at a second node based on the voltage of the first node, a second transistor adjusting a level of the voltage of the second node to a second level in response to the first signal, a third transistor forming a voltage at a third node, a fourth transistor outputting a current in response to a second signal received in a second time interval, and a. fifth transistor adjusting the voltage of the third node to a third level in response to a third signal received in a third time interval.

Abstract: Provided is a telehaptic device which includes a piezoelectric sensor module and a piezoelectric actuator module that are spaced apart from each other, wherein the piezoelectric sensor module includes a first flexible substrate, a first support substrate connected to the first flexible substrate, a piezoelectric sensor array on the first flexible substrate, and a first wireless communication circuit on the first support substrate, the piezoelectric actuator module includes a second flexible substrate, a second support substrate connected to the second flexible substrate, a piezoelectric actuator array on the second flexible substrate, and a second wireless communication circuit on the second support substrate, the piezoelectric sensor array includes piezoelectric sensors, the piezoelectric sensors being spaced apart according to a first pitch, the piezoelectric actuator array includes piezoelectric actuators, the piezoelectric actuators being spaced apart according to a second pitch, the first pitch and the s

Abstract: Various examples of the present invention relate to an electronic device employing a flexible display, and an operating method therefor. The electronic device operating method comprises the steps of: detecting a form change of the electronic device; determining an account to be used in the changed form of the electronic device; and displaying a user interface (UI) on the electronic device on the basis of a setting corresponding to the determined account. Other examples are also possible.

Abstract: A hot-stamped part according to an embodiment of the present invention comprises, as a base layer, a steel comprising: 0.28-0.38 wt % of carbon (C); 0.1-0.4 wt % of silicon (Si); 1.2-2.0 wt % of manganese (Mn); from greater than 0 to 0.020 wt % of phosphorus (P); from greater than 0 to 0.003 wt % of sulfur (S); 0.1-0.5 wt % of chromium (Cr); 0.0015-0.0040 wt % of boron (B); 0.025-0.05 wt % of titanium (Ti); and the remainder of iron (Fe) and inevitable impurities, wherein the microstructure of the base layer is full martensite.

Abstract: The present disclosure relates to emulsified oil composition including an oil containing a polyunsaturated fatty acid which is applicable to food, a rosemary extract, and a non-ionic surfactant, wherein the product quality of the food using the oil containing the polyunsaturated fatty acid is maintained during the processing and storage of the food, by preventing the oxidation of the oil containing the polyunsaturated fatty acid to suppress the production of a rancid flavor and an off-flavor.