Display panel, preparation method thereof and display device

Abstract

The embodiment of the invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a light-emitting layer and a thin film packaging layer. The light-emitting layer comprises a plurality of sub-pixel units. The thin film packaging layer comprises a first inorganic layer, a base layer and a second inorganic layer which are sequentially stacked on the light-emitting layer in the longitudinal direction. One surface, far away from the light-emitting layer, of the first inorganic layer is provided with a plurality of nano bulges; the plurality of nano bulges are arranged on one surface, far away from the light-emitting layer, of the first inorganic layer, and the incident angle of the divergent light of the light-emitting layer can be reduced through the nano bulges, so that the probability of total reflection is reduced, more light is helped to pass through the interface of the first inorganic layer and the organic layer, the light-emitting efficiency of the light-emitting layer is improved, and the display effect of the display panel is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] Compared with traditional LCD, OLED display panel has the advantages of light weight, wide viewing angle, fast response time, low temperature resistance and high luminous efficiency. Therefore, it has been regarded as the next generation of new display technology in the display industry, especially OLED can be used in flexible A flexible display that can be bent is made on the substrate, which is a huge advantage of OLED display panels. [0003] The biggest difference between an OLED display panel and a traditional liquid crystal display is that OLED does not need a backlight, but injects electrons and holes into the light-emitting layer and recombines light in the light-emitting layer. Specifically, see figure 1 As shown, the structure of the existing OLED display panel is gen...

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Problems solved by technology

[0005] Embodiments of the present invention provide a display panel, a manufacturing method thereof, and a display device, aiming at solving the problem that part of the light emitted by the light-emitting layer of the OLED display panel that is larger than the critical angle cannot pass through the first inorganic layer and the organic layer due to the principle of total reflection of light. The interface reduces the light extraction efficiency of the light-emitting layer, thereby affecting the display effect of the display panel

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