Patent ID: 9105876
Filing Date: 2015-08-11
Classification: H01L

Abstract:
1. A method of fabricating an organic light emitting diode display device, comprising: forming a first electrode over a substrate including a display region, which includes a plurality of pixel regions, the first electrode formed in each of the plurality of pixel regions; forming a first bank and a second bank, the first bank formed on edges of the first electrode and having a first width and a first thickness, and the second bank formed on the first bank and having a second width smaller than the first width; forming an organic emitting layer on the first electrode and a portion of the first bank; and forming a second electrode on the organic emitting layer and covering an entire surface of the display region, wherein the step of forming the first bank and the second bank includes: forming a first bank material layer on the first electrode; forming a second bank material layer on the first bank material layer; patterning the second bank material layer to form a bank pattern; patterning the first bank using the bank pattern as an etching mask to form the first bank; and partially etching the bank pattern to form the second bank such that the first bank protrudes from the second bank by a third width.