Mixed light emitting device, display panel and display device

Abstract

The invention discloses a mixed light emitting device, a display panel and a display device, which relate to the technical field of display, and solve the problem of poor display effects of the display device. The mixed light emitting device comprises an upper electrode, a first carrier transmission layer, a light emitting material combination layer, a mixed connection combination layer, a first light emitting material layer, a second carrier transmission layer and a lower electrode overlapped sequentially, wherein the light emitting material combination layer comprises a second light emitting material layer and a third light emitting material layer in the same layer; the lower electrode and the upper electrode are respectively an anode and a cathode; the mixed connection combination layer comprises at least two overlapped mixed connection layers, the mixed connection layer close to the anode is a p-type mixed connection layer, and the mixed connection layer close to the cathode is an n-type mixed connection layer. The mixed light emitting device provided by the invention is applicable to the display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a hybrid light emitting device, a display panel and a display device. Background technique [0002] With the development of display technology, hybrid light-emitting devices are considered to have great application prospects in flat-panel displays due to their advantages such as self-luminescence, all-solid-state, and fast response. In the process of making a hybrid light-emitting device, two processes are mainly involved. These two processes are solution process and evaporation process. The two processes are used to prepare different layers of luminescent material layers. The two processes The interfacial properties will be affected when the luminescent material layers prepared by different processes come into contact with each other, thereby reducing the luminous efficiency and lifespan of the hybrid light emitting device. [0003] In order to prevent the interface characteri...

AI Technical Summary

Problems solved by technology

However, in this layer of HCL, the carriers transported by the luminescent material layer produced by the solution process are holes, and the carriers transported by the luminescent material layer produced by the evaporation process are electrons, so it is difficult to balance the two processes. The different carriers transported by the prepared luminescent material layer make the overlapping parts of multiple luminescent material layers located in different layers emit light simultaneously, so that the multiple sub-pixel units corresponding to the hybrid light-emitting device in the display device cannot emit the desired color. light, reducing the display effect of the display device

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