Abstract: A filler wire may include a rod including an aluminum-silicon (Al—Si) alloy powder and a fluoride flux powder, and a sheath including zinc (Zn) alloy and surrounding the rod.

Abstract: A power converter includes a voltage conversion unit that provides a first driving voltage at a first output electrode by converting a power supply voltage in response to a first control signal, the voltage conversion unit being configured to provide a second driving voltage at a second output electrode by converting the power supply voltage after a short detection period, the voltage conversion unit being configured to shut down in response to a third control signal, and a short detection unit that generates the third control signal by comparing a magnitude of a voltage of the second output electrode with a magnitude of a reference voltage during the short detection period.

Abstract: An image forming apparatus that executes a screen saver that provides information related with an accessory device connected to the image forming apparatus, and a method of controlling the image forming apparatus that executes a screen saver are provided. The method includes sensing an accessory device connected to the image forming apparatus, requesting execution of a screen saver corresponding to the sensed accessory device, searching for the screen saver corresponding to the sensed accessory device, and executing a found screen saver.

Abstract: A power controller includes an inductor coupled to an input terminal to which an input voltage is input, a first switch coupled between the inductor and a first power source voltage output terminal, a second switch coupled between the inductor and a ground, a switch controller controlling a voltage output to the first power source voltage output terminal by controlling duties of the first and second switches according to a feedback voltage input to a feedback terminal corresponding to a voltage output to the first power source voltage output terminal, and a diode coupled between the first power source voltage output terminal and the feedback terminal, and preventing a voltage of the first power source voltage output terminal from increasing higher than a breakdown voltage of the first and second switches.

Abstract: Provided are quantum dots passivated by oligomers or polymers which are formed by a reaction of a first monomer having at least three thiol groups (—SH) at the terminal end with a second monomer having at least two functional groups at the terminal end that can react with the thiol groups, and a spacer group between the at least two functional groups.

Abstract: Provided is a method for forming a pattern of polyimide that is simpler and is more excellent in the pattern shape and in the dimensional accuracy in comparison with the conventional techniques of patterning polyimide, such as photolithography and laser processing. In a method for forming a micropattern of polyimide, which includes using as polyimide a solvent-soluble polyimide resin composition that is photosensitive and is moldable at a temperature of less than or equal to a glass-transition temperature; patterning the composition using thermal imprinting; and thermally curing the composition, ultraviolet irradiation is performed after the composition is released from a mold after a molding step.

Abstract: An organic light emitting display includes a plurality of pixels coupled to scan and data lines; a scan driver configured to supply a scan signal to the pixels through the scan lines; a data driver configured to supply a data signal to the pixels through the data lines; and a power supplier configured to supply first and second voltages to the pixels and a third voltage to at least one of the scan and the data driver, wherein the power supplier includes a first converter configured to convert an input voltage into the first voltage, a second converter configured to convert the input voltage into the second voltage, a third converter configured to receive the first voltage and convert the received first voltage into the third voltage, and a shutdown switch configured to control whether or not the first voltage generated by the first converter is supplied to the pixels.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a communicator configured to receive printing data, an image former configured to print the received printing data, and at least one processor configured to, in response to receiving a request for connection setting information from the user terminal apparatus, control the communicator to transmit the connection setting information to the user terminal apparatus.

Abstract: A semiconductor device includes a semiconductor chip having an active surface and a non-active surface opposite to the active surface, an upper insulating layer provided on the non-active surface of semiconductor chip, and a via and a connection pad penetrating the semiconductor chip and the upper insulating layer, respectively. The connection pad has a first surface exposed outside the upper insulating layer and a second surface opposite to the first surface and facing the semiconductor chip. The first surface of the connection pad is coplanar with an upper surface of the upper insulating layer.

Abstract: Disclosed are a steel pipe having a three-layer structure and a manufacturing method thereof. The steel pipe includes a three-layer structure of bainite and martensite, which are formed by high-frequency induction heating thereby improving toughness to enhance crash performance of a vehicle. The steel pipe includes a bainite structure layer, a bainite and martensite dual-phase structure layer, and a martensite structure layer.

Abstract: Some embodiments of the present disclosure provide a transceiver extension device. A transceiver extension device is provided for connection with an enclosure including a cage for a circuit board and a transceiver. The transceiver extension device includes an extension cage configured to accommodate the transceiver, an extension connector configured to be inserted into the cage of the enclosure, and an extension circuit board configured to transmit a signal of a second transceiver to the circuit board in the enclosure.

Abstract: A liquid crystal display module includes first and second polarizing plates, and a liquid crystal panel between the polarizing plates. The second polarizing plate comprises an optical film on a polarizer. The optical film comprises a high refractive index pattern layer having at least one engraved pattern, and a low refractive index pattern layer having a filling pattern that fills at least a portion of the engraved pattern. The high refractive index pattern layer has a higher refractive index than the low refractive index pattern layer. The optical film is disposed such that light emitted from the liquid crystal panel will enter the low refractive index pattern layer and then be emitted through the high refractive index pattern layer. A liquid crystal display includes the liquid crystal display module.

Abstract: Provided are quantum dots passivated by oligomers or polymers which are formed by a reaction of a first monomer having at least three thiol groups (—SH) at the terminal end with a second monomer having at least two functional groups at the terminal end that can react with the thiol groups, and a spacer group between the at least two functional groups.

Abstract: Disclosed are a direct current converter and an organic light emitting display including the converter. The converter includes a power generator configured to generate a first voltage; an output terminal connected to the power generator and configured to output the first voltage; a feedback terminal connected to an external feedback wiring and configured to input a second voltage to a selector; and the selector connected to the first power generator, and configured to transfer the first voltage or the second voltage to the first power generator.

Abstract: Disclosed are a direct current converter and an organic light emitting display including the converter. The converter includes a power generator configured to generate a first voltage; an output terminal connected to the power generator and configured to output the first voltage; a feedback terminal connected to an external feedback wiring and configured to input a second voltage to a selector; and the selector connected to the first power generator, and configured to transfer the first voltage or the second voltage to the first power generator.

Abstract: A mobile device includes a communication unit configured to communicate with an image forming apparatus; a display configured to display a screen; a memory configured to store a printing list; and a controller configured to search for an adjacent image forming apparatus through the communication unit, check whether there is content to be printed in the printing list stored in the memory, and control the display to display notification information on the screen based on a result of the checking.

Abstract: Disclosed are a steel pipe having a three-layer structure and a manufacturing method thereof. The steel pipe includes a three-layer structure of bainite and martensite, which are formed by high-frequency induction heating thereby improving toughness to enhance crash performance of a vehicle. The steel pipe includes a bainite structure layer, a bainite and martensite dual-phase structure layer, and a martensite structure layer.

Abstract: A power converter includes a voltage conversion unit that provides a first driving voltage at a first output electrode by converting a power supply voltage in response to a first control signal, the voltage conversion unit being configured to provide a second driving voltage at a second output electrode by converting the power supply voltage after a short detection period, the voltage conversion unit being configured to shut down in response to a third control signal, and a short detection unit that generates the third control signal by comparing a magnitude of a voltage of the second output electrode with a magnitude of a reference voltage during the short detection period.

Abstract: A method of forming patterns includes forming pillars and first peripheral patterns on an underlying layer, forming a separation wall layer covering sidewalls of the pillars and the first peripheral patterns, forming blocking portions on the separation wall layer to fill first openings between the first peripheral patterns, forming a block copolymer layer filling gap regions between the pillars, annealing the block copolymer layer to form first domains and a second domain surrounding the first domains, removing the first domains and removing portions of the separation wall layer to form second openings, removing the second domain and the blocking portions, removing the pillars and the first peripheral patterns to form third openings and fourth openings, and patterning the underlying layer to form fifth openings that extend from the second and third openings and sixth openings that extend from the fourth openings.

Abstract: A method includes forming a template portion to provide a first opening trench portion surrounding a first isolated pattern, and forming an array of pillars on an underlying layer; forming a separation wall layer including first separation wall portions surrounding sidewalls of the pillars, and forming second separation wall portions covering sidewalls of the first opening trench portion; forming a block copolymer layer on the separation wall layer; forming first domains in gaps between the pillars, and forming second domains surrounding and separating the first domains by annealing the block copolymer layer; forming second openings by selectively removing the first domains; forming third openings between the second openings, and forming a fourth opening adjacent to the first isolated pattern by selectively removing the pillars and the template portion; and forming fifth openings, which extend from the second and third openings and penetrate the underlying layer, and forming a sixth opening, which extends fro