Abstract: Provided are a method for preparing a pixel defining layer comprising applying and coating, pre-baking, exposing to light, developing, and post-baking of a photosensitive composition containing a colorant having a pigment with an average particle size of 100 nm or less, wherein the coated film generated after the post-baking has an optical density of 0.8/?m to 2.0/?m, a roughness of 3.0 nm or less, and no residue; and an organic light emitting display device comprising the pixel defining layer obtained by the method which has improved display reliability and lifetime as well as vivid colors.

Abstract: Proposed are a method of manufacturing a sapphire cover window, which includes: preparing a sapphire wafer; forming a cell edge processing portion on the sapphire wafer with a laser beam; forming an etched portion on the sapphire wafer by selectively performing wet etching on the cell edge processing portion; and separating a cell from the sapphire wafer by compressing the sapphire wafer on which the etched portion are formed, and a sapphire cover window manufactured thereby.

Abstract: The present invention provides a sterilizer which includes a steam chamber comprising a steam chamber upper member and a steam chamber lower member which are bolt-coupled to each other; an inlet door configured to open or close an inlet of the steam chamber; and an outlet door configured to open or close an outlet of the steam chamber, wherein each of the steam chamber upper member and the steam chamber lower member comprises a housing defining a steam chamber inner space and a plurality of reinforcement ribs formed on a surface of the housing at a predetermined height.

Abstract: The present invention provides a sterilizer which includes a steam chamber comprising a steam chamber upper member and a steam chamber lower member which are bolt-coupled to each other; an inlet door configured to open or close an inlet of the steam chamber; and an outlet door configured to open or close an outlet of the steam chamber, wherein each of the steam chamber upper member and the steam chamber lower member comprises a housing defining a steam chamber inner space and a plurality of reinforcement ribs formed on a surface of the housing at a predetermined height.

Abstract: The present invention provides an improved plasma display apparatus which is configured to prevent electrical shorts in a connection between a plasma display panel (PDP and a driving circuit. In one embodiment the plasma display apparatus includes a plasma display panel, and a chassis base positioned proximate and proceeding substantially parallel the plasma display panel. The chassis base has a surface contacting the plasma display panel, and an opposite surface on which the driving circuit is mounted. A connector electrically connects the plasma display panel to the driving circuit unit. At least one spacer member is disposed between the chassis base and the connector to space the chassis base and the connector from each other with a gap.