Packaging structure for active matrix organic electroluminescent diode panel

Abstract

The invention provides a packaging structure for an active matrix organic electroluminescent diode panel. The packaging structure comprises a substrate, a pixel area, multiple circles of inorganic packaging materials, multiple circles of organic adhesive materials and back covers, wherein the pixel area is positioned on the substrate, and the inorganic packaging materials and the organic adhesive materials are all positioned outside the pixel area and covered by the back covers. The pixel area is surrounded by at least one circle of the inorganic packaging materials and at least one circle of the organic adhesive materials hermetically, and the inorganic packaging materials and the organic adhesive materials are arranged separately. The packaging structure for the active matrix organic electroluminescent diode panel has excellent packaging impermeability and adhesiveness, and realization of large-sized active matrix organic electroluminescent diode panels is facilitated.

Description

technical field [0001] The invention relates to the field of organic electroluminescent diodes, in particular to a packaging structure of an active matrix organic electroluminescent diode panel. Background technique [0002] OLED (Organic Light Emitting Device Display, Organic Light Emitting Diode Display) refers to the phenomenon that organic semiconductor materials and luminescent materials are driven by an electric field to cause light emission through carrier injection and recombination. The principle of OLED light emission is to use ITO transparent electrode and metal electrode as the anode and cathode of the device respectively. Driven by a certain voltage, electrons and holes are respectively injected from the cathode and anode into the electron and hole transport layer, and the electrons and holes pass through the electron transport layer respectively. and the hole-transporting layer migrate to the light-emitting layer and meet in the light-emitting layer to form exc...

AI Technical Summary

Problems solved by technology

[0007] 5. Good low-temperature characteristics, it can still display normally at minus 40 degrees, but LCD can't do it;

However, because the material of glass glue is hard, although it can effectively block water and oxygen, its adhesion is not good. Therefore, if you want to realize a large-scale active matrix OLED panel, the adhesion between the substrate and the back cover is very important. Glass glue will be a severe test, so the packaging of large-size active matrix OLED panels needs to take into account the adhesion and the ability to block water and oxygen

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