Patent ID: 7517551
Filing Date: 2009-04-14
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a light-emitting device, comprising the steps of: forming a first thin film transistor for switching a first pixel and a second thin film transistor for switching a second pixel adjacent to the first pixel over a substrate; forming a first pixel electrode electrically connected to the first thin film transistor and a second pixel electrode electrically connected to the second thin film transistor; forming a bank between the first pixel electrode and the second pixel electrode; preparing a first evaporation cell filled with a first organic electroluminescence material and a second evaporation cell filled with a second organic electroluminescence material; and evaporating the first and the second organic electroluminescence materials in an inert gas atmosphere at an atmospheric pressure by heating the first and the second evaporation cells which are controlled by a heating means so that a first light emitting layer pattern comprising the first organic electroluminescence material is formed over the first pixel electrode without using a mask and a second light emitting layer pattern comprising the second organic electroluminescence material is formed over the second pixel electrode without using a mask, wherein the first light emitting layer pattern is electrically connected to the first pixel electrode and the second light emitting layer pattern is electrically connected to the second pixel electrode; wherein each of the first and the second evaporation cells comprises a first portion and a second portion having an inner diameter smaller than that of the first portion, and wherein the first and the second organic electroluminescence materials are ejected from an end portion of the second portion.