Organic light emitting display and manufacturing method thereof

Abstract

The invention discloses an organic light emitting display and a manufacturing method thereof. The organic light emitting display comprises a flatness layer and an organic light emitting element, wherein the first surface of the flatness layer comprises a flat area and a rugged area connected with the flat area, and the flat area and the rugged area are arranged in a stagger and interval mode; the organic light emitting element comprises an organic light emitting layer and a reflection layer; the organic light emitting layer and the reflection layer are stacked on the rugged area; and the part, corresponding to the rugged area, of the reflection layer is provided with a diffuse reflection part with the same shape as that of the rugged area. According to the above organic light emitting display, the reflection layer with the same shape is formed on the rugged area on the organic light emitting element, and mirror reflection can be effectively controlled; as the reflection layer has a rugged shape, the light emitting area is increased, and the light emitting efficiency per unit area is improved; and in addition, as the reflection layer can effectively control mirror reflection, circular polarizers can be saved or reduced, and the light extraction efficiency is greatly improved.

Description

【Technical field】 [0001] The present invention relates to a display device and a manufacturing method thereof, in particular to an organic light-emitting display device and a manufacturing method thereof. 【Background technique】 [0002] Organic light-emitting display devices (OLEDs) are active light-emitting devices. Compared with the current mainstream flat-panel display technology, thin-film transistor liquid crystal display (TFT-LCD), organic light-emitting display devices have the advantages of high contrast, wide viewing angle, low power consumption, and thinner, and can be used to make flexible displays and transparent displays. It is expected to become the next-generation flat-panel display technology following the liquid crystal display device, and it is the technology that has received the most attention in the flat-panel display technology at present. [0003] Since the organic light emitting display device is a self-luminous device, usually one of the two electro...

AI Technical Summary

Problems solved by technology

However, because the quarter wave plate 20 is strongly wavelength dependent, effective at some wavelengths and less effective at others, it is not 100% effective

At the same time, due to the existence of the circular polarizer, at least half of the light emitted by the organic light emitting display device is blocked, which greatly reduces the light extraction efficiency of the organic light emitting display device.

[0005] Therefore, one of the cathode and the anode of a traditional organic light-emitting display is a reflective electrode, which reflects external light, resulting in a decrease in contrast and seriously affecting the display quality.

Moreover, the traditional solution is to attach a circular polarizer, but the light extraction efficiency is greatly reduced

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