Abstract: A deposition apparatus according to an embodiment includes a deposition source, and a deposition portion that faces the deposition source. The deposition portion is disposed at an angle of about 4 degrees to about 14 degrees with respect to an imaginary vertical line that is perpendicular to ground. The deposition portion includes a frame including an opening, and an outer portion disposed around the opening, a substrate disposed on a first side of the frame, and a plurality of back stages disposed on a second side opposite to the first side of the frame. The frame moves by movement of the plurality of back stages.

Abstract: A magnet assembly includes a support plate and a plurality of magnets which are removably fixed to the support plate and applies a magnetic force to a deposition mask. Each magnet among the plurality of magnets include a first surface facing the support plate, a second surface opposite to the first surface and facing the deposition mask, and a magnet groove defined therein.

Abstract: A magnet assembly includes a support plate and a plurality of magnets which are removably fixed to the support plate and applies a magnetic force to a deposition mask. Each magnet among the plurality of magnets include a first surface facing the support plate, a second surface opposite to the first surface and facing the deposition mask, and a magnet groove defined therein.

Abstract: Provided are a deposition mask cleaning apparatus and a deposition mask cleaning method. The deposition mask cleaning apparatus includes a treated water bath containing treated water in which a deposition mask is immersed; a treated water generation part supplying the treated water to the treated water bath; a treated water supply pipe connecting the treated water bath and the treated water generation part; and a bubble generation part disposed in the treated water supply pipe and generating bubbles in the treated water. The treated water includes at least one of ozone water, hydrogen water, ammonia hydrogen water, and carbonated water. The bubbles include at least one of microbubbles having a bubble diameter of about 50 ?m or less and nanobubbles having a bubble diameter of about 1 ?m or less.

Abstract: Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons.

Abstract: A mask for deposition for forming a pattern on a transparent substrate according to the present invention includes a mask member having a mask alignment mark penetratedly formed so as to be aligned with a substrate alignment mark formed on the transparent substrate; and an unevenness region formed on one surface of the mask member so as to be adjacent to the mask alignment mark and having protrusions and depressions on a surface thereof. In accordance with embodiments of the present invention, it is possible to prevent the alignment error of the mask from occurring by increasing the recognition rate of the align marks formed on the substrate and the mask. As a result, it is possible to reduce the manufacturing costs by reducing the defective rate of the organic light emitting diode (OLED) display device.

Abstract: A deposition apparatus comprises a chamber, a deposition material supplier positioned in the chamber and configured to contain and supply a deposition material, a substrate holder disposed in the chamber and configured to hold a substrate such that a major surface of the substrate faces the deposition material supplier; and a mask retainer disposed in the chamber and configured to retain a mask disposed over the major surface of the substrate. The mask retainer comprises a base, and a plurality of magnets coupled to the base, at least one of the plurality of magnets being movable with respect to the base, the plurality of magnets being configured to apply magnetic force to the mask such that the mask is fixed to the substrate without substantial movement of the mask with respect to the substrate during deposition of the deposition material.

Abstract: A mask strip for manufacturing an organic light emitting diode (OLED) display is disclosed. In one aspect, the mask strip is extended in a length direction and fixed to a frame. The frame includes a plurality of masking pattern units arranged in a matrix format in which an opening pattern includes a plurality of rows that are substantially parallel to a width direction crossing the length direction and a plurality of columns that are substantially parallel to the length direction. The rows respectively have a curvature which is concave toward an inside of the masking pattern unit, and the columns respectively have a curvature which is convex toward an outside of the masking pattern unit.

Abstract: The method of manufacturing nanoparticles of a target material includes mixing graphene oxide with an aqueous solvent to prepare an aqueous solution, mixing the target material with an organic solvent to prepare an organic solution, mixing the aqueous solution with the organic solution, and preparing nanoparticles of the target material by the graphene oxide.

Abstract: A mask having both ends supported on a frame when a tensile force is applied in a first direction includes: a mask main body unit having a band form extended in the first direction; a plurality of pattern units including a plurality of pattern slits extended and opened in the first direction and separately disposed in a second direction crossing the first direction, and disposed in the mask main body unit in the first direction; and a plurality of dummy units including a plurality of dummy slits separated from each other with the pattern units therebetween, disposed in the mask main body unit, extended and opened in the first direction, and separately disposed in the second direction.

Abstract: A device for forming a roll-to-roll pattern includes: a plurality of rollers, that are separated from each other, for transferring a substrate in one direction; a pattern former provided on the substrate between neighboring rollers from among the plurality of rollers, and forming a pattern on the substrate; an absorber facing the pattern former with the substrate therebetween, and absorbing the substrate; a light irradiator neighboring the pattern former and irradiating light to the pattern; and a controller for controlling the roller, the pattern former, the absorber, and the light irradiator so that the pattern may be formed on the substrate and light may be irradiated to the pattern.

Abstract: The present invention provides a gas sensor, including: a sensor substrate provided with an electrode; and a thin layer of sensor material formed by spraying a solution in which metal oxide nanoparticles are dispersed onto the sensor substrate. The gas sensor is advantageous in that a sensor material is formed into a porous thin layer containing metal oxide nanoparticles having a large specific surface area, thus realizing high sensitivity on the ppb scale and a high reaction rate. Further, the gas sensor is advantageous in that it can be manufactured at room temperature, and the thickness of a sensor material can be easily adjusted by adjusting the spray time, so that a thin gas sensor or a thick gas sensor can be easily manufactured.

Abstract: A method of manufacturing a thin-film transistor is provided, including preparing ink including a solution in which a graphene oxide, a reduced graphene oxide, or a combination thereof is dispersed, forming the ink on a substrate in the form of a pattern, and forming a source electrode and a drain electrode that are positioned at edges of the pattern and a semiconductor channel positioned between the electrodes by a coffee-ring effect in the ink by using the graphene oxide, the reduced graphene oxide, or the combination thereof within the formed pattern.

Abstract: Disclosed is a conductive ink composition, a manufacturing method thereof, and a manufacturing method of a conductive thin film using the same, and more specifically, a conductive ink composition is provided that includes composite metal nanoparticles including first metal nanoparticles and second metal nanoparticles, and a polymer matrix. The polymer matrix is a composition including a polymer and a solvent, the first metal nanoparticles and the second metal nanoparticles are different metals, and the content of the composite metal nanoparticles is about 20 to about 25 wt %, the content of the polymer is about 5 to about 10 wt %, and the content of the solvent is about 65 to about 75 wt %, based on the total weight of the composition.

Abstract: A method of manufacturing a thin-film transistor is provided, including preparing ink including a solution in which a graphene oxide, a reduced graphene oxide, or a combination thereof is dispersed, forming the ink on a substrate in the form of a pattern, and forming a source electrode and a drain electrode that are positioned at edges of the pattern and a semiconductor channel positioned between the electrodes by a coffee-ring effect in the ink by using the graphene oxide, the reduced graphene oxide, or the combination thereof within the formed pattern.

Abstract: A deposition mask for manufacturing an organic light emitting display (OLED) using the same are provided. The deposition mask is intended for preventing an organic film from being damaged due to touching of a blocked-off portion of the mask to an emission layer (EML), or chemical transition from being generated at the organic film. For that purpose, the deposition mask stuck to a substrate of the OLED to deposit an organic EML includes an opening and an indentation. The opening is opened so as to deposit the organic EML. The indentation is indented a predetermined depth from a plane facing the substrate.

Abstract: Disclosed are a method of manufacturing a reduced graphene oxide pattern which includes forming a graphene oxide pattern on a substrate and providing the graphene oxide pattern with a white light pulse to reduce the graphene oxide, a reduced graphene oxide obtained by the method, and an electronic device and a thin film transistor including the reduced graphene oxide.

Abstract: A mask strip for manufacturing an organic light emitting diode (OLED) display is disclosed. In one aspect, the mask strip is extended in a length direction and fixed to a frame. The frame includes a plurality of masking pattern units arranged in a matrix format in which an opening pattern includes a plurality of rows that are substantially parallel to a width direction crossing the length direction and a plurality of columns that are substantially parallel to the length direction. The rows respectively have a curvature which is concave toward an inside of the masking pattern unit, and the columns respectively have a curvature which is convex toward an outside of the masking pattern unit.

Abstract: Disclosed are a method for forming a metal oxide pattern and a method of manufacturing a thin film transistor using the patterned metal oxide. The method for forming a metal oxide pattern includes: preparing an ink composition including at least one metal oxide precursor or metal oxide nanoparticle, and a solvent; ejecting the ink composition on a substrate to form a pattern on the substrate; and photosintering the formed pattern. Herein, the metal oxide precursor is ionic.

Abstract: A mask assembly includes a frame including an opening part; and unit masks that are disposed on the opening part and having both ends of each of the unit masks supported by the frame in the state where tensile force is applied in one direction, each of the unit masks including: pattern opening parts disposed in the one direction; and a first groove disposed adjacent to the pattern opening parts and between the pattern opening parts and an edge of the unit mask, and formed to be depressed from a surface of the unit mask.