ORGANIC LIGHT EMITTING DISPLAY AND MANUFACTURING METHOD THEREOF

摘要

An organic light emitting device and a manufacturing method thereof are provided to prevent damage to a hole injection layer in forming a barrier rib by forming an etch-out buffer layer on the hole injection layer. A thin film transistor(200) is formed on a substrate(10). An anode electrode(170) is connected to the thin film transistor. A hole injection layer(210) is formed on the anode electrode. A first hole(221) is formed on an etch-out buffer layer(220) in order to expose the hole injection layer. The etch-out buffer layer is formed on the hole injection layer. Thickness of the etch-out buffer layer is 100~20,000Å. A second hole(231) is formed on a barrier rib(230) in order to be overlapped with the first hole. The barrier rib is formed on the etch-out buffer layer. An organic light emitting layer(240) is formed on the hole injection layer exposed by the first hole and the second hole. A cathode electrode(250) is formed on the organic light emitting layer.