Organic light emitting display device

摘要

An organic light emitting display device is disclosed which includes: a first electrode including red, green and blue sub-pixel regions; a first hole injection layer disposed on the first electrode; a first hole transport layer disposed on the hole injection layer; second, third and fourth hole transport layers arranged on the first hole transport layer corresponding to the red, green and blue regions, respectively; an organic emission layer disposed on the second, third and fourth hole transport layers; an electron transport layer disposed on the organic emission layer; and a second electrode disposed on the electron transport layer, the second, third and fourth hole transport layers each having a hole mobility different from an electron mobility of the electron transport layer.

主权项

1. An organic light emitting display device comprising:
a first electrode including red, green and blue sub-pixel regions; a first hole injection layer disposed on the first electrode; a first hole transport layer disposed on the hole injection layer; second, third and fourth hole transport layers arranged on the first hole transport layer corresponding to the red, green and blue regions, respectively; an organic emission layer disposed on the second, third and fourth hole transport layers; an electron transport layer disposed on the organic emission layer; and a second electrode disposed on the electron transport layer, wherein the second, third and fourth hole transport layers each have a hole mobility different from an electron mobility, of the electron transport layer, and wherein the organic light emitting display device enables a peak electrical-charge density region and a peak recombination density region within the organic emission layer not to overlap with each other using a difference between the hole and electron mobilities of the hole and electron transport layers, and the peak recombination density region corresponds to a highest density region of recombined electron-hole pairs.