Organic light-emitting display panel and organic light-emitting display device

Abstract

The invention discloses an organic light-emitting display panel, which comprises an array substrate, an organic light-emitting device arranged on the array substrate, and a packaging layer, wherein the organic light-emitting device comprises a plurality of light-emitting pixels; the packaging layer is arranged at one side, departing from the array substrate, of the organic light-emitting device and at least sequentially comprises a first inorganic packaging layer, a first interlayer bonding layer and a first organic packaging layer in the direction of one side, departing from the array substrate, of the packaging layer; the refractive index of the first inorganic packaging layer is n1, the refractive index of the first interlayer bonding layer is n2 and the refractive index of the first organic packaging layer is n3; and the refractive index n2 of the first interlayer bonding layer is gradually reduced in a gradient manner in the direction, toward the first organic packaging layer, ofthe first inorganic packaging layer, the maximal refractive index of the first interlayer bonding layer is n21, the minimal refractive index of the first interlayer bonding layer is n22, n21 is greater than n1 and n22 is smaller than n3, wherein the thickness of the first inorganic packaging layer is 10-100nm. The total reflection phenomenon is improved, the light extraction efficiency is improvedand the interlayer bonding performance is improved.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to an organic light-emitting display panel and a display device including the organic light-emitting display panel. Background technique [0002] With the continuous development of display technology, display panel manufacturing technology is also becoming mature. Existing display panels mainly include organic light emitting display panels (Organic Light Emitting Diode, OLED), liquid crystal display panels (LiquidCrystal Display, LCD), and plasma display panels. (Plasma Display Panel, PDP) etc. The organic light emitting display device as a self-luminous display device does not require a separate light source. Therefore, the organic light emitting display device can operate at a low voltage, is light and thin, and provides high-quality characteristics such as wide viewing angle, high contrast, and fast response. Therefore, organic light emitting display devices as next-generat...

AI Technical Summary

Problems solved by technology

The atomic layer deposition (Atomic Layer Deposition, ALD) process is often used as the formation process of the first inorganic packaging layer because the deposited film layer is relatively dense and has a good water and oxygen blocking effect. However, the film layer prepared by the ALD process It is relatively dense and forms a smooth surface, so that the adhesion between the first inorganic encapsulation layer 31' and the organic encapsulation layer 32' is not good, and it is easy to occur between the interface between the first inorganic encapsulation layer 31' and the organic encapsulation layer 32'. peel off

In addition, since the refractive index of the first inorganic encapsulation layer 31' is greater than that of the organic encapsulation layer 32', the light emitted by the organic light-emitting device enters the organic encapsulation layer 32' from the first inorganic encapsulation layer 31' at an incident angle of σ1. In order to enter the optically sparse medium from the optically dense medium, total reflection is easy to occur, that is, the reflection angle σ2 is equal to 90 degrees, which affects the light output efficiency

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