Organic electroluminance display structure

Abstract

This invention relates to an organic electric excitation illumination display panel including a reflection layer, an organic material layer set on it and a transparent material layer with the thickness larger than 500 nm on the reflection layer and is adjacent to the organic material layer.

Description

technical field [0001] The invention relates to a display structure, in particular to an organic electroluminescence display structure. Background technique [0002] With the rapid development of science and technology, organic materials are gradually and widely used in various circuit components. For example, an organic electroluminescent display (OLED) panel made of organic materials has a simple structure and excellent performance. The advantages of temperature, contrast, viewing angle, and light-emitting diode (LED) rectification and light-emitting characteristics gradually attract attention in the display market. [0003] Most of the light of the general OLED panel emits light through the lower substrate, that is, the so-called bottom emission (bottom emission). Light-emitting, so the upward light-emitting element is also called surface-emitting and electroluminescent display (surface-emitting OLED) panels. [0004] Active organic electroluminescent elements must be c...

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Problems solved by technology

[0005] However, the existing upward-emitting OLED panels also have some disadvantages. For example, since the electrodes are all semi-reflective or total reflective electrodes, and the optical path is short, there will be extremely serious optical interference, which makes it difficult to change the viewing angle. There are serious brightness decline, and chromaticity change, light color and efficiency are extremely sensitive to the thickness of the component, etc.

[0006] In order to overcome these problems, in the previous technology, many research teams have also devoted themselves to reducing the reflectivity of the electrode and increasing its transmittance, but most of them are still limited by the OLED process, and the achieved effect is still quite limited.

In addition, there are also groups that do not develop in the direction of reducing the degree of optical interference, but use optical interference to increase its efficiency, and then use filters to overcome the chromaticity deviation when viewing angle changes, but because optical interference still exists in the component , so there will still be serious brightness degradation when the viewing angle changes, and the light color and efficiency are extremely sensitive to the thickness of the component, etc.

[0007] Therefore, we urgently need a new organic electroluminescent display panel structure to solve the problem of optical interference phenomenon in the prior art

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