LED Light Emitting Device with Adjacent Sections for Spatial Color Mixing
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Solution Overview
Problem
Conventional LED devices struggle with achieving high mixed color performance and color rendering due to spatial mixing limitations, leading to color unevenness and brightness variations.
Innovation Solution
A light-emitting device with adjacently arranged light-emitting sections, each comprising electrically connected LED elements sealed by a resin layer, where at least one color of light emitted by each section differs from another, allowing for entangled light-distribution characteristics and adjustable chromaticity through separate driving of sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED devices are provided on a single substrate, then color variety is achieved, but spatial mixed color performance deteriorates causing color unevenness
Solution Approach 1:
The invention divides the light-emitting structure into multiple independently controllable light-emitting sections, each containing multiple LED devices. This segmentation allows separate driving of each section to achieve spatial mixing of colors while maintaining overall color uniformity across the substrate.
Solution Approach 2:
The invention combines multiple LED devices within each light-emitting section and integrates these sections across the substrate. By merging the light output from multiple sections, the invention achieves high spatial mixed color performance while preventing color unevenness through coordinated control of all sections.
2Adaptability or versatility
If light-emitting sections are separately driven, then color adjustment capability improves, but device complexity increases
Solution Approach 1:
The invention designs each light-emitting section with universal control characteristics, allowing them to be driven independently yet coordinated through a unified control system. This multi-functionality enables color adjustment capability while managing device complexity through standardized section design and control protocols.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances mixed color performance, reduces color unevenness, and maintains brightness and color tone stability over time, enabling easy adjustment of light color and high color rendering properties.
Implementation Method 1
a resin layer which seals the plurality of light-emitting elements
Implementation Method 2
a plurality of light-emitting elements which are electrically connected with each other
Implementation Method 3
each of the plurality of light-emitting sections being made up of (i) a plurality of light-emitting elements
Data Source
AI summary
The light-emitting device includes a substrate and a plurality of light-emitting sections. A first light-emitting section is made up of LED chips and a first fluorescent-substance-containing resin layer, and a second light-emitting section is made up of LED chips and a second fluorescent-substance-containing resin layer. The first fluorescent-substance-containing resin layer and the second fluorescent-substance-containing resin layer are provided in a plurality of locations such that the fluorescent-substance-containing resin layers for the different light-emitting sections are adjacently arranged.