Abstract: The present disclosure relates to a brake disc including a braking part having a circular plate shape having a hollow portion and a plurality of coupling portions protruding and extending from an inner diameter surface thereof, and a hat part disposed in the hollow portion and having a plurality of insertion portions protruding laterally, in which the plurality of coupling portions is respectively coupled to the plurality of insertion portions, and the coupling portion of the braking part and the insertion portion of the hat part are joined to only one of an outboard portion or an inboard portion of the braking part. According to the present disclosure, it is possible to reduce noise occurring at a position at which the hat part and the braking part are coupled to each other and improve cooling performance.

Abstract: A scroll compressor including a housing, a motor in the housing, an orbiting scroll, and a fixed scroll. An injection valve assembly is provided between the fixed scroll and the housing and further includes a cover plate, a valve plate, a gasket retainer, and an injection valve. The compressor capable of increasing a surface pressure at a position at which the injection valve of the injection valve assembly needs to be supported, and preventing deformation of the gasket retainer by reducing a bead height of the gasket retainer.

Abstract: The present invention relates to a thin film deposition apparatus and a substrate treatment system including same. The thin film deposition apparatus includes a deposition chamber, a susceptor, a rotation mechanism, an elevation member, and an elevation driving unit. The deposition chamber has an inner space in which a deposition process is performed. The susceptor is disposed within the deposition chamber, and a plurality of substrates is seated on a top surface of the susceptor. The elevation member is disposed above the susceptor to support a portion of each side of the substrates seated on the susceptor. When the elevation member is operated, the substrates are separated from the susceptor or seated on the susceptor. The elevation driving unit elevates the elevation member.

Abstract: The present invention board-conveying robot, and its aspect is] provides a board-conveying robot which improves the construction of a horizontal axis arm and hands to reduce a working radius of the board-conveying robot and increase work efficiency thereof. The board-conveying robot of the present invention includes at least one vertical axis arm to control a height of the board-conveying robot and a horizontal axis arm arranged to allow at least one hand to move rectilinearly to hold an object. The horizontal axis arm is fixedly connected to a head. The head is rotatably connected to an upper end of the vertical axis arm to move the horizontal axis arm between vertical and horizontal orientations. The board-conveying robot has two hands which are constructed to move parallel with each other along two guide rails formed in parallel with each other on the horizontal axis arm.