Display panel and preparation method

Abstract

The invention provides a display panel, which comprises a plurality of pixels, a substrate, a pixel definition layer and light-emitting layers, wherein the plurality of pixels are used for displaying images; the pixel definition layer is arranged on the substrate and comprises a plurality of openings corresponding to the plurality of pixels; the openings include first openings and second openings; the first openings are located in the surrounding region; the second openings are located in the middle region; the distance between two adjacent first openings is greater than that between two adjacent second openings; and the light-emitting layers are formed in the openings corresponding to the pixels. According to the display panel, the distance between two adjacent first openings of the pixel definition layer is greater than that between two adjacent second openings, so that the problem of color mixing of the light-emitting layers in the adjacent pixel regions with different colors can be avoided. The invention further provides a preparation method of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel and a preparation method. Background technique [0002] Organic Light-Emitting Diodes (OLED for short) are self-luminous devices that do not require a backlight source and are light and thin in appearance, while traditional liquid crystal displays (LCDs) require a backlight source to work and have a thicker appearance. Organic light-emitting diode displays have low power consumption, wide viewing angles, and fast screen response, which is the technology that best meets people's future functional requirements for displays. Therefore, organic light-emitting diodes are expected to replace liquid crystal displays in the near future and have high market potential. [0003] In the production process of organic small molecule light-emitting diodes, the current relatively mature technology is the use of vacuum evaporation technology. During the device preparation proces...

AI Technical Summary

Problems solved by technology

In the production process, after the sub-pixel opening area of ​​the mask plate corresponds to the evaporation pattern of the substrate through the alignment mechanism and is closely attached, the organic material is evaporated onto the corresponding substrate pattern through the opening area of ​​the mask plate; but in In the actual production process, limited by factors such as the flatness of the mask plate carrying platform, the deformation of the substrate, the magnitude and uniformity of the magnetic force in the alignment mechanism, there is a gap between the local mask plate and the substrate, which leads to In the area with gaps, when one color is evaporated, the shielding area of ​​the mask plate cannot effectively block the adjacent pattern areas of other colors, so that the patterns of other colors are plated with unnecessary organic materials during the evaporation process, resulting in There are color mixing defects in the entire substrate, causing the substrate to be scrapped

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