Organic electroluminescent device and packaging method of organic electroluminescent device

Abstract

The invention relates to the technical field of electroluminescent device packaging, and discloses an organic electroluminescent device and a packaging method of the organic electroluminescent device. The organic electroluminescent device comprises a substrate, an electroluminescent structure, a water-oxygen isolating wall and a packaging thin film, wherein the electroluminescent structure is arranged on the substrate, the water-oxygen isolating wall is arranged on the substrate, is located on the periphery of the electroluminescent structure and forms a closed ring-type structure, the packaging thin film covers the electroluminescent structure, and the periphery of the packaging thin film is in sealing fit with the water-oxygen isolating wall. After the organic electroluminescent device is packaged, the width of the packaging area on the periphery of the electroluminescent structure is the sum of the thickness of the water-oxygen isolating wall and the width of a gap between the water-oxygen isolating wall and the periphery of the electroluminescent structure, the thickness of the wall body of the water-oxygen isolating wall can be set according to the design requirement, and the width of the gap between the water-oxygen isolating wall and the periphery of the electroluminescent structure can be set according to the design requirement. In this way, the narrow-frame design of the organic electroluminescent device is conveniently achieved.

Description

technical field [0001] The invention relates to the technical field of electroluminescent device packaging, in particular to an organic electroluminescent device and a packaging method thereof. Background technique [0002] Organic Light Emitting Diode (OLED, Organic Light Emitting Diode) is an organic electroluminescent device, which has the advantages of simple preparation process, low cost, high luminous efficiency, and easy formation of a flexible structure. Therefore, a display technology using organic light emitting diodes has become an important display technology. [0003] The packaging technology of OLED devices is an important factor affecting the service life of OLED devices. Thin-film packaging is a commonly used packaging method in OLED device packaging, which can meet the requirements of lighter and thinner OLED devices, so many researchers have turned their attention to thin-film packaging. [0004] Such as Figure 1a with Figure 1b As shown, the OLED devi...

AI Technical Summary

Problems solved by technology

In order to limit or prevent the intrusion of oxygen and moisture into OLED devices, such as Figure 1a As shown, the periphery of the encapsulation film 03 needs to be sealed with the substrate 01. However, if the sealing width a between the periphery of the encapsulation film 03 and the substrate 01 is too narrow, oxygen and moisture will penetrate into the OLED through the edge of the encapsulation film 03. device

Therefore, in order to ensure the effectiveness of packaging the electroluminescent structure 02 by the packaging film 03 and the substrate 01, it is necessary to ensure the width a of the seal between the periphery of the packaging film 03 and the substrate 01. For example, in the thin film packaging technology, the above-mentioned width a is 5mm. As a result, it is difficult to achieve a narrow frame design for OLED devices packaged with encapsulation film 03 in the prior art

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