Method for manufacturing organic electroluminescent display device

Abstract

The invention relates to a method for manufacturing an organic electroluminescent display device, belonging to the technical field of panel display and comprising the steps of: 1) printing an ITO anode graphics on a conductive substrate, ultrasonically cleaning the substrate printed with an anode for the ozone ion bombardment treatment in a vacuum chamber; 2) manufacturing an NPB cavity transport layer on the substrate; 3) manufacturing a luminescent layer on the cavity transport layer; 4) manufacturing Alq3 electronic transport layer on the luminescent layer; 5) manufacturing a CuPc / LiF / Al functional intercalated layer on the electronic transport layer; 6) manufacturing a second cavity transport layer on the functional intercalated layer; 7) manufacturing a second luminescent layer on the second cavity transport layer; 8) manufacturing a second Alq3 electronic transport layer on the second luminescent layer; 9) manufacturing an LiF / Al mixed cathode on the second Alq3 electronic transport layer; and 10) integrally encapsulating the device with an encapsulating substrate to complete the manufacturing of the device. The inventive organic electroluminescent display device OLED has simple manufacturing technologies and can realize high-brightness narrow-band emission.

Description

technical field

[0001] The invention belongs to the technical field of flat panel display and relates to a preparation method of an organic electroluminescent display device. Background technique

[0002] Organic electroluminescent display devices, referred to as OLEDs, have become the most promising in the field of optoelectronic devices and flat panel displays because of their high luminous efficiency, low driving voltage, simple preparation process, low cost, ultra-thin, and surface emission and full-color display. One of the promising technologies. Generally, an organic electroluminescent display device consists of a substrate, an indium tin oxide ITO anode, and a NPB hole transport layer, and the evaporated red light material is Alq 3 Doped with 3% 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran; the green light material is Alq 3 Doped with 5% coumarin; the blue light material is composed of a light-emitting layer made of anthracene doped with 4% pery...

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