Organic light emitting diode device

摘要

An organic light emitting diode device including an anode, a cathode facing the anode, and a light emitting member between the anode and cathode, wherein the light emitting member includes at least two light emitting units displaying the same or different color as one another, and a charge-generation layer between the at least two light emitting units, the charge-generation layer including a first charge-generation layer and a second charge-generation layer that each include an undoped material, and wherein the first charge-generation layer has an ionization energy that is about the same as or less than an electron affinity of the second charge-generation layer.

主权项

1. An organic light emitting diode device, comprising:
an anode; a cathode facing the anode; and a light emitting member between the anode and cathode; wherein the light emitting member includes:
at least two light emitting units displaying the same or different color as one another, anda charge-generation layer between the at least two light emitting units, the charge-generation layer including a first charge-generation layer and a second charge-generation layer that each are formed from an undoped material, and wherein:
the first charge-generation layer has an ionization energy that is about the same as or less than an electron affinity of the second charge-generation layer, andthe first charge-generation layer includes a metal-substituted tetra(hexahydropyrimidopyrimidine).