Organic EL device and method for manufacturing organic EL device

CN112314056BActive Publication Date: 2025-02-28SONY SEMICON SOLUTIONS CORP
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Patent Information

Application Number
CN201980040795.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2018-06-25
Filing Date
2019-06-14
Publication Date
2025-02-28
Estimated Expiration
2039-06-14

AI Technical Summary

Technical Problem

In the process of pixelating the red light emitting device, the green light emitting device and the blue light emitting device in a repetitive manner, the organic compound layer in the organic EL device is prone to deterioration due to reaction with oxygen or water in the air, and the deterioration problem of the side surface is particularly prominent.

Method used

An organic EL device is designed that at least two sub-pixels are arranged separately from each other on a plane perpendicular to the stacking direction, each sub-pixel includes an organic compound layer and covers a film on the side surface of the organic compound layer, which is different between different sub-pixels to prevent the organic compound layer from being exposed to the external environment during the manufacturing process.

Benefits of technology

By covering the side surface film of the organic compound layer, the deterioration of the organic compound layer is effectively prevented, and the stability and performance of the organic EL device are improved.

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Abstract

In the present invention, an organic EL device is constructed to have a structure capable of suppressing degradation of characteristics. An organic EL device (100) is provided, in which at least two sub-pixels are arranged separately from each other on a plane extending in a direction perpendicular to the stacking direction. Each sub-pixel includes a first electrode (118) and a second electrode (116) stacked therein, and an organic compound layer (117) including at least a light-emitting layer is sandwiched between the first electrode (118) and the second electrode (116), and such a light-emitting layer emits light of a different color from other light-emitting layers. The side surface of the organic compound layer is covered with a thin film, and the thin film is different from sub-pixel to sub-pixel. This structure can suppress degradation of the characteristics of the organic EL device.
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Citation Information

Patent Citations

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