Organic light-emitting display device and preparation method thereof

Abstract

The invention relates to an organic light-emitting display device and a preparation method thereof. The method comprises: a substrate is provided; a first pixel electrode, a pixel defining layer, and a heating grid are arranged on the substrate. The pixel defining layer is arranged at the periphery of the first pixel electrode; and the heating grid encircles the first pixel electrode. An organic layer arranged on the substrate covers the heating grid and the first pixel electrode. A second pixel electrode is arranged on the organic layer. The heating grid is heated, so that the organic layer in contact with the temperature of the heating grid at least reaches a threshold temperature value of the organic layer. With the method, because the temperature of the heating grid can be increased to the threshold temperature, the corresponding organic layer is in an electrical insulating state, so that the crosstalk phenomenon between adjacent pixel units can be avoided. Moreover, during the organic layer setting process, usage of a high-precision mask plate is not required, so that the preparation process is reduced and the costs are lowered. The display device is prepared by the method.

Description

Technical field [0001] The present invention relates to the field of display devices, in particular to an organic light emitting display device and a preparation method thereof. Background technique [0002] Organic light-emitting display devices have the advantages of self-luminescence, wide viewing angle, short response time, thin thickness, low power consumption, etc., and their applications in the field of display devices are becoming more and more extensive. [0003] For ordinary organic light-emitting display devices, a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer can promote the movement of charge carriers (holes or electrons). These layers may have relatively high conductivity to improve self-luminous efficiency. However, when these layers are coated on the substrate, the charge carriers will move laterally. When one pixel unit emits light, it will drive the adjacent pixel unit to follow the light, causing cross...

AI Technical Summary

Problems solved by technology

However, these layers are coated on the substrate, and the charge carriers will move laterally. When one pixel unit emits light, it will drive the adjacent pixel units to follow and emit light, resulting in crosstalk.

Images