An LED light source based on a fluorescent film piece and a blue light chip cooperative design and a preparation method thereof

By systematically and collaboratively designing and optimizing the geometry, optical interface, and light field guidance of the fluorescent film and blue light chip, the problems of color difference at the edge of the light spot and interface reflection loss in the existing technology are solved, achieving efficient and stable light source performance, which is suitable for high-end applications such as stage lighting, landscape lighting, and imaging lights.

CN122742541APending Publication Date: 2026-09-11GUANGZHOU JINGXIN PHOTOELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202610881285.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-17
Publication Date
2026-09-11

AI Technical Summary

Technical Problem

The existing design of fluorescent films and blue light chips lacks systematic coordination, resulting in color difference at the edge of the light spot, large interface reflection loss, insufficient utilization of side-emitted light, and unstable overall quality of the light source, which cannot meet the color uniformity and reliability requirements of high-end applications.

Method used

By establishing a collaborative design of geometric dimensions, optical interface, light field guidance, and system integration, the matching relationship between the fluorescent film and the blue light chip is optimized, including the L:T ratio, refractive index gradient matching layer, transparent light guiding layer, and multi-chip array parameters. Combined with a dual-path heat dissipation structure, the optical parameters can be predicted and customized.

Benefits of technology

It significantly improves the spatial color uniformity, light output efficiency, and thermal stability of the light source, eliminates color difference at the edge of the light spot, reduces interface reflection loss, and improves the overall performance and reliability of the light source, making it suitable for professional and high-end lighting applications.

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Abstract

This invention discloses an LED light source based on the co-design of a fluorescent film and a blue light chip, and its fabrication method, belonging to the field of semiconductor lighting technology. This invention aims to solve the problems of uneven light color, high interface loss, and low side light utilization caused by the simple superposition of films and chips in existing LED packaging. The core feature of the LED light source provided by this invention lies in the establishment of a multi-dimensional system co-design: in terms of size, the extension distance L of the film beyond the chip and the film thickness T satisfy an optimal match of L:T=0.5:1 to 5:1, eliminating edge color difference; in terms of interface, a transparent layer with a refractive index between the chip and the film is introduced to reduce reflection loss; on the side, a high-refractive-index transparent guiding layer is set to efficiently guide side light into the film. This invention further extends to the gap-thickness matching of multi-chip arrays, dual-path heat dissipation with thermal-optical synergy, and cross-level linkage between packaging and lenses. Through the above systematic synergy, the spatial color uniformity, overall light output efficiency, thermal stability, and customizable light color of the light source of this invention are significantly improved, making it particularly suitable for high-end professional lighting fields such as stage lights and imaging lights where strict requirements for light spot quality are placed.
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