Display panel and display device

By setting grooves in the non-pixel area of ​​the insulating layer to accommodate overflow ink during inkjet printing, the color mixing problem caused by color resistor overflow in OLED display devices is solved, reducing the difficulty of material development and improving optical performance.

CN121531907APending Publication Date: 2026-02-13WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511803308.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

In existing OLED display devices, color resist overflows into other color resist areas during inkjet printing, causing color mixing and affecting display abnormalities. Furthermore, existing technologies increase the difficulty of material development and reduce optical performance.

Method used

A first groove is provided in the non-pixel area of ​​the insulating layer, and a black matrix layer is provided in the first groove. A second groove is provided on the side away from the insulating layer, and a color resist layer is provided in the second groove to accommodate the overflowing ink, prevent it from overflowing to other color resist areas, reduce the risk of color mixing, and do not require reducing the thickness of the black matrix layer.

Benefits of technology

It reduces the risk of color mixing when inkjet printing forms color resist, reduces the difficulty of developing color resist materials, avoids increasing the reflectivity of the display panel, and improves optical performance.

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Abstract

The embodiment of the invention provides a display panel and a display device. According to the display panel, the first groove is formed in the non-pixel area of the insulating layer, the black matrix layer is arranged in the first groove, the second groove is formed in the side, away from the insulating layer, of the black matrix layer, and the color resistance layer is arranged in the second groove, so that when the color resistance is formed, even if the color resistance overflows, the color resistance can overflow into the second groove, and the color resistance is prevented from overflowing. Therefore, the risk that color mixing occurs when the color resistors are formed through ink-jet printing is reduced, the thickness of the black matrix layer does not need to be reduced, the reflectivity of the display panel is prevented from being increased, and the risk that the ink forming one color resistor overflows to the setting areas of the other color resistors is low, so that the display effect is improved. The selection range of the contact angle between the color resistor and the black matrix layer is wide, the development difficulty of a color resistor material is reduced, the middle area of the color resistor is prevented from protruding too high, and the optical performance of the display panel is improved.
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