Abstract: A display panel includes a lower panel configured to display an image. The lower panel includes a plurality of unit pixels. A slit layer is disposed on the lower panel. The slit layer includes a first pattern configured to form a first slit corresponding to each of the plurality of unit pixels and a second pattern configured to form a second slit corresponding to the first slit. The slit layer is configured to project an image through the first slit and the second slit. A top layer is disposed on the slit layer. The top layer is larger than the lower panel in a plan view. The top layer is configured to have the image projected thereon.

Abstract: A display device may include a display panel, a light source configured to provide the display panel with light, a bottom chassis on which the light source is disposed, a mold frame coupled to the bottom chassis, and a diffuser plate fixed to the mold frame and configured to emit light from the light source to the display panel. The mold frame may include an upper mold on which the display panel is disposed, a lower mold on which the diffuser plate is disposed, and a first connecting part configured to couple the upper and lower molds. The mold frame may have a gap between the upper and lower molds.

Abstract: A display device may include a display panel, a light source configured to provide the display panel with light, a bottom chassis on which the light source is disposed, a mold frame coupled to the bottom chassis, and a diffuser plate fixed to the mold frame and configured to emit light from the light source to the display panel. The mold frame may include an upper mold on which the display panel is disposed, a lower mold on which the diffuser plate is disposed, and a first connecting part configured to couple the upper and lower molds. The mold frame may have a gap between the upper and lower molds.

Abstract: A display panel includes a lower panel configured to display an image. The lower panel includes a plurality of unit pixels. A slit layer is disposed on the lower panel. The slit layer includes a first pattern configured to form a first slit corresponding to each of the plurality of unit pixels and a second pattern configured to form a second slit corresponding to the first slit. The slit layer is configured to project an image through the first slit and the second slit. A top layer is disposed on the slit layer. The top layer is larger than the lower panel in a plan view. The top layer is configured to have the image projected thereon.

Abstract: A coating method includes rotatably supporting both ends of the piston or product to be coated; injecting coating material to a first parts of the piston or product to be coated through a first nozzle while rotating the piston, and simultaneously spreading to a uniform film thickness the coating material applied to the first part of the piston or product to be coated thereby removing excess coating material; fixedly supporting both ends of the piston or product to be coated; injecting coating material to a second pad of the piston or product to be coated through a second nozzle while sliding the second nozzle in an axial direction of the piston or product to be coated, and simultaneously spreading to a uniform film thickness the coating material applied to the second part of the piston or product to be coated thereby removing excess coating material.

Abstract: In a friction stir welding method of manufacturing a piston for a variable capacity swash plate type compressor, the welder is shifted from the welded portions to a predetermined position while maintaining contact between the welder and one of the piston members. After finishing the friction stir welding, a hole is not formed in the welded portions of the piston members to improve durability of the welded portions. The piston members are elastically supported by support rollers to align the central axial lines of the piston members with the axial line of the chuck, even though the diameters of the piston members differ.

Abstract: A friction stir welding apparatus of a piston for variable capacity swash plate type compressor bonds two pistons through frictions stir welding without forming a hole in welded portions of the piston members. The friction stir welding apparatus includes: A support that rotatably supports coaxially coupled first and second pistons. A welder, rotatably inserted into welded portions of the first and second pistons supported on the support, performs friction stir welding along the rotation direction of the first and second pistons. Support rollers elastically mounted on the lower portions of the pistons have central axis lines of the piston members on central axis lines of the rotation support while the pistons are supported on the support. The rollers vertically move through a predetermined height while supporting the pistons. The welder is transferred from the welded portions to another position after welding of the welded portions.

Abstract: The present invention relates to a manufacturing method of a piston for a swash plate type compressor with variable capacity. More particularly, the present invention relates to a manufacturing method of a piston for a swash plate type compressor with variable capacity, which manufacture a piston from two piston members through friction stir welding without forming any hole in welded portions of the piston members, thereby improving durability of the welded portions and easily manufacturing a piston regardless of the size of the outer diameter of the piston members.

Abstract: Disclosed is a friction stir welding apparatus of a piston for a swash plate type compressor with variable capacity, which integrally bonds two piston members of round section with each other through friction stir welding without forming any hole in welded portions of the piston members, thereby improving durability of the welded portions and easily bonding the piston members by size regardless of the size of the outer diameter of the piston members.

Abstract: A film coating apparatus has a nozzle body and a coating material spreading element having an injection hole communicated with the inside of the nozzle body, and formed integrally with the nozzle body. The apparatus further has a rotation support element and a fixing element for rotatably supporting both ends of a piston for a fixed displacement swash plate type compressor and a pair of first coating material applying elements moveably installed above the rotation support element. The first coating material applying elements have a pair of first nozzles which apply coating material in uniform thickness to circumferential outer surfaces of both head parts of the piston. A second coating material applying element is installed above the fixing element such that it can be moved upward and downward and slid laterally to apply coating material in uniform thickness to a bridge part of the piston.

Abstract: Disclosed are a film coating nozzle, and an apparatus and a method for coating a compressor piston using the same. The film coating nozzle comprises a nozzle body configured to supply coating material; and coating material spreading means defined with a coating material injection hole which is communicated with the inside of the nozzle body, and formed integrally with the nozzle body to spread to a uniform film thickness coating material applied to a surface of a product, in such a way as to remove excess coating material.