Structure of white oled device

A structure of a white organic light-emitting (OLED) device, comprising two or more emissive layers, in which at least one of the emissive layers is made of a quantum dot and at least one of the emissive layers is made of an organic light emission material;

• comprising a substrate, an anode formed on the substrate, a first hole injection layer formed on the anode, a first hole transporting layer formed on the first hole injection layer, a first emissive layer formed on the first hole transporting layer, a first electron transporting layer 61 formed on the first emissive layer, a first electron injection layer formed on the first electron transporting layer, a charge generation layer formed on the first electron injection layer, a second hole injection layer formed on the charge generation layer, a second hole transporting layer formed on the second hole injection layer, a second emissive layer formed on the second hole transporting layer, a second electron transporting layer formed on the second emissive layer, a second electron injection layer formed on the second electron transporting layer, a cathode formed on the second electron injection layer, a package cover plate arranged above the cathode, and a sealing enclosure resin arranged between the substrate and the package cover plate to bond the substrate and the package cover plate together;
• wherein the first emissive layer is made of the quantum dot and the second emissive layer is made of the organic light emission material;
• wherein the quantum dot comprises one or more of a blue quantum dot, a yellow quantum dot, a green quantum dot, a red quantum dot, and a white quantum dot and light emitting from the organic light emission material of the second emissive layer is combinable with light emitting from the quantum dot of the first emissive layer to form white light;
• wherein the first electron transporting layer and the second hole transporting layer that are arranged between the first emissive layer and the second emissive layer respectively transport electrons and holes generated by the charge generation layer under an electric field to the first emissive layer and the second emissive layer to be respectively re-combined with holes and electrons injected from the anode and the cathode into the first emissive layer and the second emissive layer so as to generate light of different colors to be combined to form white light;
• wherein the charge generation layer comprises a first charge generation layer formed on the first electron injection layer and a second charge generation layer formed on the first charge generation layer, the first charge generation layer showing property of transporting electrons, the second charge generation layer showing property of transporting holes;
• and
• wherein the charge generation layer is formed by mixing a p-type organic semiconductor and an n-type organic semiconductor.