Light-emitting device, display panel and preparation method thereof

Abstract

The invention discloses a light-emitting device, a display panel and a preparation method. The light-emitting device comprises a first electrode, a second electrode and an organic functional layer. The organic functional layer comprises an organic light-emitting layer. The organic functional layer is provided with a first surface in contact with the first electrode and a second surface located onthe surface, deviating from the first electrode, of the organic light-emitting layer. The organic functional layer has a first preset thickness between the first surface and the second surface, the sum of the thicknesses of the first electrode and the organic functional layer has a second preset thickness, and the second preset thickness enables the light emitting intensity range of the light emitting device to be 150-250nits. According to the light-emitting device, the display panel and the preparation method, the problems of short circuit caused by an excessively thin printing ink film layerand poor ink spreading uniformity caused by an excessively thick printing ink film layer can be avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light emitting device, a display panel and a preparation method. Background technique [0002] Currently, OLED displays are superior to LCD displays in terms of display color gamut, color depth, contrast, and response speed. Among them, as a new technology, IJP-OLED has attracted more and more attention due to its extremely high material utilization rate. However, due to the immaturity of IJP-OLED technology and material limitations, IJP-OLED displays face many problems. [0003] For example, in IJP-OLED displays, organic layers such as HIL, HTL, and EML are fabricated using a printing process. When the thickness of the printed film layer is relatively thin, the light emitted by the OLED device will reflect, refract and interfere in each film layer, thereby causing the microcavity effect. By adjusting the thickness of the printed film layer, the above-mentioned microcavity ...

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Problems solved by technology

[0008] In order to solve the above-mentioned technical problems, the light-emitting device, the display panel and the preparation method of the present invention provide the organic functional layer with a first predetermined thickness between the first surface and the second surface, and by adding a The adjustment layer can make the sum of the thicknesses of the organic functional layer and the first electrode of the light-emitting device have a second preset thickness, thereby avoiding the short circuit caused by the printing ink film layer being too thin and the thickness of the printing ink film The problem of poor ink spreading uniformity caused by too thick

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