Backlight structure and manufacturing method therefor, backlight unit and display device

By employing a combination design of a first substrate layer, a reflective layer, and a color conversion structure in the backlight structure, the light path is optimized, solving the problems of backlight module thickness and color difference, and achieving a thinner display device and improved display effect.

WO2026044506A9PCT designated stage Publication Date: 2026-06-25BOE TECHNOLOGY GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BOE TECHNOLOGY GROUP CO LTD
Filing Date
2024-08-27
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

In existing technologies, the backlight module is relatively thick, which makes it difficult to meet the trend of thinner display devices. Furthermore, the color of the light emitted from different areas varies greatly, affecting the display effect.

Method used

The structure employs a combination of a first base layer, a first reflective layer, a transparent filling portion, a second reflective layer, a color conversion structure, and a light-emitting unit. By creating a first groove on the first base layer and setting reflective layers on its bottom and sides, the structure utilizes the transparent filling portion and the color conversion structure to reduce additional thickness and optimize the light path length to reduce color differences.

Benefits of technology

It achieves a thinner backlight structure and improves light utilization and color uniformity, meeting the requirements for thinner display devices and display effects.

✦ Generated by Eureka AI based on patent content.

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Abstract

A backlight structure, a backlight unit and a display device. The backlight structure comprises a first base layer (10), a first reflective layer (11), a second reflective layer (13), a light-emitting unit (15), and a color conversion structure (14), wherein a first surface (S1) of the first base layer (10) is provided with a plurality of first grooves (G1); the first reflective layer (11) is located at the bottoms of the first grooves (G1); and the second reflective layer (13) is located on the side of a transparent filling portion (12) facing away from the first base layer (10). The light-emitting unit (15) is located on the side of the second reflective layer (13) facing away from the first base layer (10), and the color conversion structure (14) is located between the light-emitting unit (15) and the first reflective layer (11). In the backlight structure, the color conversion structure is arranged between the light-emitting unit and the first reflective layer, thereby helping reduce the thickness of the backlight structure and improve a display effect.
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