LED Package with Plasmonic Metal Particles for Efficiency
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Solution Overview
Problem
Existing light emitting diode (LED) packages face challenges in improving light emitting efficiency and reducing power consumption, particularly due to the complexity of driving circuits and the need for efficient color control, which is often achieved through the use of fluorescent substances and quantum dots.
Innovation Solution
Incorporating an insulating layer with dispersed light emitting particles and metal particles that induce surface plasmon resonance, enhancing light emitting efficiency through resonant coupling between the light radiating from the particles and the resonance wave generated by the metal particles, thereby reducing power consumption and simplifying the driving circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light emitting diodes of different colors are used to control light color, then color control capability is improved, but driving circuit complexity increases
Solution Approach 1:
The patent extracts the color control function from the driving circuit by using fluorescent substances and quantum dots that passively convert light wavelengths. Instead of actively controlling multiple LEDs through complex circuits, the system uses a single LED combined with optical materials that automatically perform wavelength conversion, thereby eliminating the need for complex multi-color LED driving circuits while maintaining color control capability.
Solution Approach 2:
The patent introduces fluorescent substances and quantum dots as intermediary materials between the LED light source and the final output light. These intermediaries receive light from the LED and convert it to desired wavelengths through photoluminescence, serving as a passive mediation layer that achieves color control without requiring complex electronic control circuits.
2Use of energy by moving object
If light emitting efficiency of fluorescent substance and quantum dot is improved, then power consumption is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent uses composite materials combining fluorescent substances and quantum dots within a resin package. This composite structure allows the materials to work synergistically - the fluorescent substances provide broad wavelength conversion while quantum dots offer precise wavelength control - achieving high light emitting efficiency and low power consumption while maintaining manufacturability through a unified package structure that can be produced using existing LED manufacturing processes.
3Illumination intensity
If metal particles are added to enhance light emitting efficiency through surface plasmon resonance, then light intensity is improved, but chemical stability may be compromised
Solution Approach 1:
The patent introduces a resin layer as an intermediary barrier between the metal particles and the fluorescent substances/quantum dots. This resin layer physically separates the metal particles from direct contact with the light-emitting materials, preventing chemical reactions and degradation while still allowing the metal particles to generate surface plasmon resonance that enhances light intensity. The resin acts as a protective mediator that maintains both chemical stability and optical enhancement.
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 effectively improves the light emitting efficiency of the LED package by enhancing the intensity of emitted light through resonant coupling, allowing for reduced power consumption and easier manufacturing while preventing chemical variation between metal and light emitting particles.
Implementation Method 1
The plurality of light emitting particles is dispersed in the insulating layer, the plurality of light emitting particles being configured to receive the first light to generate second light of a second wavelength
Implementation Method 2
The plurality of metal particles being dispersed in the insulating layer, the plurality of metal particles being configured to receive at least one light component of the first light and the second light. The reception of the at least one light component is configured to cause, at least in part, surface plasmon resonance
Implementation Method 3
the light emitting efficiency of the plurality of light emitting particles may be improved by resonant coupling of light between light radiating from the plurality of light emitting particles and the resonance wave radiating from the plurality of metal particles
Data Source
AI summary
A light emitting diode package includes a light emitting diode, an insulating layer, a plurality of light emitting particles, and a plurality of metal particles. The light emitting diode is configured to emit first light of a first wavelength in a visible light range. The insulating layer is disposed on the light emitting diode. The plurality of light emitting particles is dispersed in the insulating layer and is configured to receive the first light to generate a second light of a second wavelength different from the first wavelength. The plurality of metal particles is dispersed in the insulating layer, and is configured to receive at least one light component of the first light and the second light to cause, at least in part, surface plasmon resonance, the surface plasmon resonance being configured to yield a resonance wave comprising a peak wavelength in the range of the second wavelength.