Patent ID: 7354328

Claim:
A method of fabricating a substrate for an organic electroluminescent device, comprising: forming a first electrode on a substrate having a pixel region; forming an insulating layer on the first electrode; patterning the insulating layer, the patterned insulating layer being formed at a boundary of the pixel region; forming an electroluminescent layer on the first electrode in the pixel region by printing a solution type electroluminescent material; forming a second electrode material layer on an entire surface of the substrate having the electroluminescent layer and the patterned insulating layer; and oxidizing the second electrode material layer at the boundary of the pixel region to form a second electrode in the pixel region and a metal oxide layer at the boundary of the pixel region, wherein the oxidizing comprises: preparing a mask including a light-transmitting portion corresponding to the boundary of the pixel region and a light-shielding portion corresponding to the pixel region; irradiating light to the second electrode material layer in the boundary of the pixel region through the light-transmitting portion of the mask; and oxidizing the second electrode material layer corresponding to the light-transmitting portion of the mask.