Organic light emitting display device having auxiliary charge generation layer

摘要

An organic light emitting display device with improved lifespan is disclosed. The organic light emitting display device includes first and second electrodes facing each other on a substrate, at least two light emitting units formed between the first and second electrodes, an N-type charge generation layer and a P-type charge generation layer sequentially stacked between the light emitting units, and at least one auxiliary charge generation layer formed between at least any one of the P-type charge generation layer and the N-type charge generation layer and an emitting layer of the light emitting unit disposed on an upper or lower portion of the at least any one thereof and generating electrons and holes supplied to the emitting layer of the light emitting unit.

主权项

1. An organic light emitting display device comprising:
first and second electrodes facing each other on a substrate; at least two light emitting units formed between the first and second electrodes, wherein each of the light emitting units comprises an emitting layer; an N-type charge generation layer and a P-type charge generation layer sequentially stacked between the light emitting units; and a first auxiliary charge generation layer generating electrons and holes supplied to the emitting layer of the light emitting unit, wherein the first auxiliary charge generation layer is formed either between the P-type charge generation layer and the emitting layer of the light emitting unit disposed above the P-type charge generation layer, or between the N-type charge generation layer and the emitting layer of the light emitting unit disposed below the N-type charge generation layer.