Manufacturing method of organic light emitting diode

Abstract

The invention relates to a method for preparing an organic light emitting diode, comprising: providing a substrate, the surface of the substrate has a plurality of first electrodes; forming a first organic material layer on the surface of the substrate; form a first organic light-emitting layer on the surface of the template; provide a template with nano-patterns, the nano-patterns include a plurality of recesses with different depths; attach the surface of the template with nano-patterns to the first organic light-emitting layer, and extrude Pressing and demoulding, forming a plurality of spaced apart first protrusions, second protrusions and third protrusions on the surface of the first organic light-emitting layer away from the substrate; forming a first protrusion on the surface of the second protrusions Two organic light-emitting layers, forming a third organic light-emitting layer on the surface of the third protrusion; forming a second organic material layer to cover the first protrusion, the second organic light-emitting layer and the third organic light-emitting layer; and A second electrode is provided to be electrically connected to the second organic material layer.

Description

technical field [0001] The invention relates to a preparation method of an organic light emitting diode. Background technique [0002] Organic light emitting diode (OLED) is a light-emitting diode whose light-emitting layer is composed of organic compounds. As a high-efficiency light-emitting source, it has many characteristics such as light weight, thin thickness, multiple colors, and low manufacturing cost. , making organic light-emitting diodes gradually show a tendency to replace traditional light-emitting diodes in the lighting application of large-area surface light sources, and have been widely used in various fields. [0003] OLEDs generally include a substrate, a first electrode, a first organic material layer, a phosphor layer, a second organic material layer and a second electrode stacked, and the phosphor layer includes red, green, A blue phosphor layer, and adjacent red, green, and blue phosphor layers form a pixel. The prior art provides a method for preparin...

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Problems solved by technology

[0004] However, the preparation of the OLED in the prior art needs to be carried out in a vacuum system, and the mask needs to be replaced at least three times, the process is complex and the cost is high; and in the process of replacing the mask, it is easy to cause damage to the deposited organic material layer. Destruction, which affects the luminous effect of OLED and the life of OLED

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