Patent ID: 9305979
Filing Date: 2016-04-05
CPC Classification: H01L

Claim Text:
1. An organic light emitting diode display device, comprising: a substrate; a plurality of pixel regions defined by a plurality of gate lines and a plurality of data lines formed on the substrate, each pixel region including red, green, first blue and second blue sub-pixels; a thin film transistor in each pixel region; a first electrode electrically connected to a drain electrode of each of the thin film transistors; an insulating layer exposing the first electrode; a hole injecting layer and a hole transporting layer sequentially stacked on the first electrode; red, green and blue emitting layers on the hole transporting layer, the red emitting layer being in the red sub-pixel, the green emitting layer being in the green sub-pixel, and the blue emitting layer being in the first and second blue sub-pixels; an electron transporting layer and an electron injecting layer sequentially stacked on the red, green, and blue emitting layers; and a second electrode on the insulating layer and the electron injecting layer, wherein the first electrode in the second blue sub-pixel has a multi-layered structure of the first electrode layer and at least one metal layer; and wherein the first electrode in the first blue sub-pixel has a single-layered structure of the first electrode layer.