Abstract: An organic light emitting display device and method of making thereof where a black matrix element is not separately formed and where the occurrence of defects caused by separately forming the black matrix element is prevented. The organic light emitting display includes a pixel electrode; and a pixel defining layer having an opening which either entirely exposes the pixel electrode or exposes only a central portion of the pixel electrode, wherein the pixel defining layer has a multi-layered structure at a end surface of the opening of the pixel defining layer.

Abstract: An organic light emitting display device and a manufacturing method of forming an inorganic layer formed on the top of the sealing film with nitride are disclosed. In one embodiment, the organic light emitting display device includes: i) a substrate on which at least one organic light emitting diode is formed and ii) a sealing film stacked with at least one organic film and inorganic film and sealing the organic light emitting diode, wherein the top of the sealing film is formed of an inorganic film formed of nitride.

Abstract: An organic light emitting display (OLED), which includes a display unit and a controlling unit, is provided. The display unit includes an organic light emission layer and a transparent thin film transistor (TFT) to drive the organic light emission layer, and the display unit emits light into two opposite surfaces (upper and lower surfaces). The controlling unit includes an electro-optical layer that is capable of being switched from one state to another state by applying voltage to the layer. The controlling unit controls transmission of light emitted from the display unit. Therefore the flat panel display of the present invention is capable of displaying an image in one surface or in two surfaces. The selection of surface of image display can be manually or automatically controlled by a user. The controlling unit can includes a liquid crystal device, an electrophoretic device, or an electrochromic device.

Abstract: A method for preparing a polybutadiene latex comprises providing an emulsion polymerization medium by reacting a mixture of water, butadiene monomers, a surfactant, a chain transfer agent, an initiator and an electrolyte, preferably at a temperature of about 60˜80° C., preferably for about 8˜16 hours, and agglomerating the resulting emulsion polymerization medium, preferably at a temperature of about 5˜20° C. higher than the polymerization temperature, preferably for about 4˜12 hours by adding a surfactant and an agglomerating agent to the emulsion polymerization medium in consecutive order.

Abstract: A method for preparing a polybutadiene latex comprises providing an emulsion polymerization medium by reacting water, butadiene monomers, a surfactant, a chain transfer agent, an initiator and an electrolyte, preferably at a temperature of about 60.about.80.degree. C., preferably for about 8.about.16 hours, and agglomerating the resulting emulsion polymerization medium, preferably at a temperature of about 5.about.20.degree. C. higher than the polymerization temperature, preferably for about 4.about.12 hours by adding a surfactant and an agglomerating agent to the emulsion polymerization medium in consecutive order. The agglomerating agent is prepared a method comprising a first step of forming agglomerating seeds by batch polymerization of an alkyl acrylate of C.sub.1 .about.C.sub.12, an anionic surfactant and an anionic initiator, a second step of growing the agglomerating agent in semi-batch polymerization by adding an alkyl acrylate of C.sub.1 .about.C.sub.