OLED packaging structure and OLED packaging method

Abstract

Provided in the invention is an OLED packaging structure and an OLED packaging method. The OLED packaging structure comprises a packaging cover plate (1), a substrate (2), an OLED device (21), a drying agent (11), and a frame adhesive (12); and the drying agent (11) located at the periphery of the OLED device (21) is arranged on the packaging cover plate (1) and the frame adhesive (12) located at the periphery of the drying agent (11) is used for bonding the packaging cover plate (1) and the substrate (2). A loop of groove (103) is formed in the periphery, corresponding to the area of the OLED device (21), of the packaging cover plate (1); and multiple loops of concave-convex structures (101) are formed at the periphery of the groove (103). The drying agent (11) is arranged in the groove (103); and the frame adhesive (12) is arranged between the concave-convex structures (101) and the substrate. According to the OLED packaging structure, the bonding strength between the packaging cover plate and the substrate can be improved and the distance between the packaging cover plate and the substrate is reduced; and thus infiltration of the moisture and oxygen can be effectively blocked.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED packaging structure and an OLED packaging method. Background technique [0002] In the field of display technology, flat panel display technologies such as liquid crystal display (LCD, Liquid Crystal Display) and organic light-emitting diode (OLED, Organic Light-Emitting Diode) displays have gradually replaced cathode ray tube (CRT, Cathode Ray Tube) displays. Among them, OLED has many advantages such as self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide temperature range, flexible display and large-area full-color display, etc. It is widely used in mobile phone screens, computer monitors, full-color TVs, etc., and is recognized by the industry as the most promising display device. [0003] The OLED has an anode, an organic light emitting layer, and a cathode sequentially f...

AI Technical Summary

Problems solved by technology

However, the sealant used in UV glue packaging is an organic material, and its molecular gap is large after curing. The traditional OLED packaging method is adopted, because the sealant has curing defects, porosity, and weak bonding with the substrate and the packaging cover. For other reasons, water vapor and oxygen are more likely to penetrate into the internal sealing area through the gap, resulting in faster degradation of OLED device performance and shortened lifespan.

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