Organic Light Emitting Diode Display Device and Method of Fabricating the Same

摘要

In an organic light emitting diode (OLED) display device and a method for fabricating the same, OLED pixels are patterned through a photolithography process, so a large area patterning can be performed and a fine pitch can be obtained, and an organic compound layer can be protected by forming a buffer layer of a metal oxide on an upper portion of the organic compound layer or patterning the organic compound layer by using a cathode as a mask, improving device efficiency. In addition, among red, green, and blue pixels, two pixels are patterned through a lift-off process and the other remaining one is deposited to be formed without patterning, the process can be simplified and efficiency can be increased.

主权项

1. An organic light emitting diode (OLED) display device, comprising:
a first electrode formed on a substrate; a hole injection layer and a hole transport layer formed on the substrate with the first electrode formed thereon; a first light emitting layer formed of a first organic film on the substrate with the hole injection layer and the hole transport layer formed thereon; a second light emitting layer formed of a second organic film on the substrate with the first light emitting layer formed thereon; a third light emitting layer formed by depositing a third organic film on the entire surface of the substrate with the first light emitting layer and the second light emitting layer formed thereon; and an electron injection layer and a second electrode formed on the third light emitting layer.