Blue-light top luminous organic diode structure and fabricating method thereof

Abstract

The invention provides a blue-light top luminous organic diode structure and a fabricating method thereof. The blue-light top luminous organic diode structure comprises a substrate, a reflection electrode (anode) positioned on the substrate, a hole injection / transmitting layer positioned on the reflection layer, a blue-light luminous layer positioned on the hole injection / transmitting layer, an electronic transmitting / injection layer positioned on the blue-light luminous layer, a semitransparent metal electrode (cathode) positioned on the electronic transmitting / injection layer, and a light output coupling layer positioned on the electronic transmitting / injection layer. The invention realizes the transmission of blue light through using the light output coupling layer to inhibit the microcavity effect (multiple beam interference effect), and realizes the strengthened blue light transmission by utilizing the wide-angle interference effect. The method can conveniently realize the coherent enhancement of the blue light strength through controlling the thickness of the hole injection / transmitting layer, and has potential application value.

Description

technical field [0001] The present invention relates to a blue-light top-emitting organic light-emitting diode structure, in particular to design the thickness of the light output coupling layer by using Fresnel coefficient matrix transfer theory to suppress multi-beam interference effect, and design hole injection / transport layer by using wide-angle interference effect A method for preparing a blue top-emitting organic light-emitting diode that enhances the intensity of blue light by increasing the thickness. technical background [0002] Organic light-emitting diodes (OLEDs) are considered to be the most promising next-generation alternative to liquid crystal displays due to their bright colors, wide viewing angles, fast response speeds, flexibility, high luminance, high efficiency, thin thickness, and wide operating temperature range. One of the flat panel display technologies. The so-called OLED refers to the bottom-emitting OLED, such as figure 1 As shown, a glass sub...

AI Technical Summary

Problems solved by technology

The former has higher requirements on the film-forming process of ITO and IZO, and it is easy to damage the organic layer at the bottom during the preparation of ITO and IZO films, resulting in short circuit of the device or large leakage current; Makes more and more research on top-emission OLEDs based on translucent metals

However, the problem with this type of OLED is that the highly reflective electrode at the bottom and the semi-transparent electrode at the top form a resonant cavity, and the change in the thickness of the resonant cavity has certain selectivity for the light color.

This method requires multi-step plate alignment procedures when making three primary color array pixels, which makes the OLED display manufacturing process complicated.

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