Electroluminescent device of polyimide base material and preparation method thereof

Abstract

The invention relates to an electroluminescent device of a polyimide base material and a preparation method thereof. The electroluminescent device comprises a polyimide substrate, a transparent conductive layer, a hole transport layer and a luminescent layer, wherein the transparent conductive layer, the hole transport layer and the luminescent layer are coated on the polyimide substrate. The preparation method of the electroluminescent device comprises: printing a transparent conductive layer on a polyimide substrate by using a screen printing plate, and printing a hole transport layer solution and a light-emitting layer solution on the transparent conductive layer by using the screen printing plate. The electroluminescent device with the polyimide base material, which is prepared by the preparation method and has the proportion, is good in scratch and collision resistance, light, easy to process, good in high temperature resistance and good in insulating property, and the product is shaped at one time.

Description

technical field [0001] The invention relates to an electroluminescent device, in particular to an electroluminescent device with a polyimide substrate and a preparation method. Background technique [0002] Electroluminescent device (LED) refers to a display device that uses electroluminescent materials to be excited to emit light, and has become a research hotspot in the field of display. [0003] Traditional electroluminescent devices are generally made of glass or film as the base material. Among them, the electroluminescent device of the glass base material is fragile, and it is easy to be bumped, which will cause the device to be damaged and inconvenient to transport; the electroluminescent device of the film base material is easy to be damaged. Second setting is required when using. Specifically, the disadvantages of electroluminescent devices using glass substrates are fragile, bulky, and poor impact resistance, while the disadvantages of electroluminescent devices u...

AI Technical Summary

Problems solved by technology

[0003] Traditional electroluminescent devices are generally made of glass or film as the base material. Among them, the electroluminescent device of the glass base material is fragile, and it is easy to be bumped, which will cause the device to be damaged and inconvenient to transport; the electroluminescent device of the film base material is easy to be damaged. Second setting is required when using

Specifically, the disadvantages of electroluminescent devices using glass substrates are that they are fragile, bulky, and poor in impact resistance, while the disadvantages of electroluminescent devices using film substrates are that they are easy to break and require secondary shaping during use.

[0004] However, if the preparation method in the prior art is used to directly replace the base material or remove the conductive paste or plate the conductive layer film, the prepared electroluminescent device cannot meet the needs.