Method fabricating organic light emitting diode display device
An organic light emitting diode display device comprises a substrate including a pixel region, the pixel region including a first portion and a second portion, a first electrode in the second portion of the pixel region, a bank layer separating the first portion and the second portion of the pixel region, an emitting layer in the second portion of the pixel region but not in the first portion of the pixel region, an emission assisting layer extending in the first portion of the pixel region and in the second portion of the pixel region, the emission assisting layer in the first portion of the pixel region being more conductive than the emission assisting layer in the second portion of the pixel region, and a second electrode on the emission assisting layer in the first portion of the pixel region and in the second portion of the pixel region.
1. A method of fabricating an organic light emitting diode display device comprising:
forming an auxiliary line in a first portion of a pixel region on a substrate;
forming a first electrode in a second portion of the pixel region on the substrate;
forming an emitting layer on the first electrode in the second portion of the pixel region;
forming an emission assisting layer on the auxiliary line in the first portion of the pixel region and on the emitting layer in the second portion of the pixel region;
forming a second electrode on the emission assisting layer in the first portion of the pixel region and the second portion of the pixel region on the emission assisting layer; and
inducing conductive particles in the emission assisting layer in the first portion of the pixel region by applying a bias voltage across the auxiliary line and the second electrode.
2. The method of claim 1 , wherein the bias voltage is one of a direct current voltage, an alternating current voltage and a pulse voltage.
3. The method of claim 1 , wherein the emitting layer and the emission assisting layer are formed through a soluble process.
4. The method of claim 1 , further comprising forming another emission assisting layer in the second portion of the pixel region between the first electrode and the emitting layer.
5. The method of claim 1 , further comprising forming another auxiliary line of a line shape in the first portion of the pixel region under the auxiliary line, wherein said another auxiliary line is connected to the auxiliary line.
6. The method of claim 1 , further comprising:
forming a bank layer between the first portion of the pixel region and the second portion of the pixel region after forming the first electrode in the first portion of the pixel region and the auxiliary line in the second portion of the pixel region,
wherein the emission assisting layer is formed on the auxiliary line in the first portion of the pixel region, on the emitting layer in the second portion of the pixel region and on the bank layer between the first portion of the pixel region and the second portion of the pixel region.
7. The method of claim 1 , wherein the auxiliary line and the first electrode are formed on a same layer simultaneously.