Display panel, preparation method thereof and display device

The display panel preparation method addresses light color bleeding by UV light processing to create independent pixel regions on the substrate, enhancing optical display quality through distinct optical cavity lengths for improved color accuracy and stability.

CN119730669APending Publication Date: 2025-03-28GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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Patent Information

Application Number
CN202311282325.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-28
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Existing display panels face issues with light color bleeding due to inadequate optical cavity lengths and pixel unit diffusion, leading to compromised optical display effects.

Method used

A display panel preparation method involving a substrate with multiple electrodes, where a functional layer is formed and subjected to specific UV light processing to create distinct pixel and non-pixel units, preventing light diffusion through the formation of independent pixel regions.

Benefits of technology

This method effectively reduces light color bleeding and enhances optical display quality by maintaining distinct optical cavity lengths for each pixel unit, improving color accuracy and stability.

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Abstract

The embodiment of the invention belongs to the technical field of display, and relates to a display panel, a preparation method thereof and a display device. The preparation method of the display panel comprises the steps that a substrate is provided, the substrate is provided with a plurality of bottom electrodes, at least one functional layer is formed on the substrate, the functional layer covers the bottom electrodes, and the functional layer at least comprises a light-emitting layer; first illumination treatment is carried out on the at least one functional layer, so that a plurality of pixel unit areas and non-pixel unit areas are formed on the functional layer, a top electrode is prepared on the functional layer, orthographic projections of the pixel unit areas on the substrate at least cover the bottom electrode, and orthographic projections of the non-pixel unit areas on the substrate at least partially expose the bottom electrode. According to the display panel and the display device, the functional layer in the non-pixel unit area is invalid through the first illumination treatment to form a plurality of independent pixel unit areas, so that carriers in the pixel unit areas in the display panel cannot diffuse mutually, light color crosstalk is avoided, and the optical display effect is improved.
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