Patent ID: 7109650

Claim:
An active matrix organic electroluminescent display device, comprising: a substrate including a light emitting region having sub pixel regions; a plurality of switching elements on the substrate in the sub pixel regions; a first passivation layer covering the plurality of switching elements and having a plurality of first contact holes exposing the plurality of switching elements; a plurality of first electrodes on the first passivation layer, each first electrode connected to each switching element through each first contact hole; a second passivation layer on the plurality of first electrodes, the second passivation layer having a plurality of openings exposing the plurality of first electrodes and an end portion covering edge portions of the plurality of first electrodes; a plurality of organic electroluminescent layers on the second passivation layer, each organic electroluminescent layer contacting each first electrode through each opening; and a second electrode on the plurality of organic electroluminescent layers, wherein the first passivation layer is made of a first organic material having a planarized upper surface and the second passivation layer is made of a second organic material having a formation temperature lower than a formation temperature of the first organic material, and the end portion of the second passivation is disposed between a terminal end portion of each of the plurality of organic electroluminescent layers and a terminal end portion of each of the plurality of first electrodes.