Encapsulation structures of OLED, encapsulation methods, and OLEDs
View Patent ↗A OLED encapsulation structure includes: a first encapsulation layer; a second encapsulation arranged on one side of the first encapsulation layer; and scattering particles formed between the first encapsulation layer and the second encapsulation layer, and the scattering particles are configured to scatter incident lights. In addition, an encapsulation method of OLEDs and the OLEDs having the encapsulation structure are disclosed. The scattering particles are formed within the cathode encapsulation layer. The scattering particles may generate the scattering effect for the ambient lights or the stray lights to reduce the reflection of the light beams by the cathode. Thus, the brightness and the clearness of the OLED may be enhanced.
1. An encapsulation method of OLEDs, comprising:
forming a first encapsulation layer on a surface of a cathode of the OLED;
forming scattering particles on a surface of the first encapsulation layer;
forming a second encapsulation layer on the first encapsulation layer to cover the scattering particles; and
wherein the scattering particles are made by any one of the following methods:
adopting a fast film-formation method to damage film-formation quality of the first encapsulation layer such that the surface of the first encapsulation layer comprises an island-shaped structure to form the scattering particles;
heating up a plurality of heating points of the first encapsulation layer, a location of each of the heating points corresponds to one scattering particle such that materials in a rim of the heating point shrink down to the heating point to form the scattering particles;
adopting a manufacturing method of sphere-inorganic-nano particles to generate the scattering particles, mixing the scattering particles into solvent, coating the solvent on the surface of the first encapsulation layer, and applying a baking process to vaporize the solvent to form the scattering particles on the surface of the first encapsulation layer; and
adopting a high precision masking sheet to etch the surface of the first encapsulation layer to form the scattering particles.