LED Light-Emitting Apparatus with Optimized Reflective Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In light-emitting apparatuses with multiple LED sections, the uniform configuration of the LED-mounting surface can lead to reduced reflective efficiency due to differing light emission behaviors from phosphor-transformed wavelengths, affecting the overall light reflection.
Innovation Solution
A light-emitting apparatus with distinct reflective layers and phosphor-containing resins for each LED section, where the thickness of the TiO2 layers in the reflective layers is optimized to enhance reflective efficiency for specific wavelength regions, ensuring higher reflective efficiency for each section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform LED-mounting surface configuration is used for multiple light-emitting sections, then the manufacturing process is simplified, but the reflective efficiency is lowered for some light-emitting sections due to different light emission behaviors
Solution Approach 1:
The patent applies local quality by configuring different reflective layer structures in different regions of the LED-mounting surface. Specifically, the first light-emitting section has a reflective layer with a TiO2 layer thickness of 30-50nm optimized for its light emission characteristics, while the second light-emitting section has a TiO2 layer thickness of 60-80nm optimized for its different light emission behavior. This regional differentiation ensures high reflective efficiency for each light-emitting section while maintaining a unified overall structure.
2Reliability
If different reflective layer configurations are used for each light-emitting section, then the reflective efficiency for each section is improved, but the device complexity increases
Solution Approach 1:
The patent implements parameter changes by varying the thickness of the TiO2 layer in the reflective layer according to the specific light emission characteristics of each light-emitting section. The first light-emitting section uses a TiO2 thickness of 30-50nm while the second uses 60-80nm. This parameter optimization maximizes reflective efficiency for each section without fundamentally changing the overall layer structure, thus balancing performance improvement with controlled complexity.
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 optimized reflective layers and phosphor configurations improve the light reflective efficiency of the LED-mounting surface, enhancing the overall performance by tailoring reflective efficiency for different light emission behaviors from each LED section.
Implementation Method 1
a reflective efficiency of the first reflective layer for first light emitted from the first configuration is higher than a reflective efficiency of the second reflective layer for the first light
Implementation Method 2
a first phosphor-containing resin which protects the first LED element and transforms a wavelength of light emitted from the first LED element
Data Source
AI summary
A light-emitting apparatus having an LED-mounting surface having an improved light reflective efficiency is provided. The light-emitting apparatus includes a board, a first reflective layer arranged on the board, a second reflective layer different from the first reflective layer, arranged at a position different from the position of the first reflective layer on the board, a first configuration configured by a first LED element mounted on the first reflective layer and a first phosphor-containing resin which protects the first LED element and transforms a wavelength of light emitted from the first LED element, and a second configuration configured by a second LED element mounted on the second reflective layer and a second phosphor-containing resin which protects the second LED element and transforms a wavelength of light emitted from the second LED element. A reflective efficiency of the first reflective layer for first light emitted from the first configuration is higher than a reflective efficiency of the second reflective layer for the first light.