Patent ID: 7042024
Filing Date: 2006-05-09
Classification: H01L

Abstract:
1. A light emitting device comprising; a thin film transistor over an insulating surface comprising: a first inorganic insulation layer under the semiconductor layer; a second inorganic insulation layer over the gate electrode; a first organic insulation layer over the second inorganic insulation layer; a third inorganic insulation layer over the first organic insulation layer; an anode layer formed over the third inorganic insulation layer; a second organic insulation layer overlapping with an end of the anode layer, the second organic insulation layer having an inclined surface with continuously varying curvatures; a fourth inorganic insulation layer formed over the upper surface and the side surface of the second organic insulation layer, the fourth inorganic insulation layer having an opening over the anode layer; a light emitting layer comprising an organic material formed over the anode layer and the fourth inorganic insulation layer; a cathode layer formed over the light emitting layer comprising an organic material; and a fifth inorganic insulation layer formed over the cathode layer, wherein the light emitted from the light emitting element is visible through the third inorganic insulation layer, and wherein each of the third inorganic insulation layer to the fourth inorganic insulation layer comprises a material selected from the group consisting of silicon nitride and aluminum nitride.