Multicolor LED Light Engine Substrate Design
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Solution Overview
Problem
Existing LED filament lamps struggle to achieve effective color mixing and are cumbersome due to the need for complex holders and heavy construction when attempting to use multiple LED filaments of different colors in a single lamp, particularly in RGB applications.
Innovation Solution
A light engine featuring a substrate with multiple groups of LED chips, each emitting a different color, connected in series or parallel, allowing for easy handling, mounting, and color mixing, with an electronic driver for individual control, enabling the production of a lightweight, versatile RGB or RGBW light engine with improved brightness and omnidirectional light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED filaments with different colors are used in a single lamp, then color variety is improved, but device complexity and weight increase due to complex holders
Solution Approach 1:
The patent combines multiple LED chips of different colors (red, green, blue, and white) onto a single substrate, eliminating the need for multiple separate LED filaments and complex holders. This merging approach achieves color variety while simplifying the overall device structure and reducing weight.
Solution Approach 2:
The single substrate serves multiple functions by hosting different colored LED chips that can be independently controlled to produce various colors and color temperatures. This multi-functional design replaces the need for multiple specialized filaments and complex switching mechanisms.
2Adaptability or versatility
If multiple LED filaments with different colors are used in a single lamp, then color variety is improved, but the lamp becomes rather heavy
Solution Approach 1:
The patent combines multiple LED chips of different colors (red, green, blue, and white) onto a single substrate, eliminating the need for multiple separate LED filaments and complex holders. This merging approach achieves color variety while simplifying the overall device structure and reducing weight.
3Illumination intensity
If LED chips of different colors are placed close together, then color mixing is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different colored LED chips at specific locations on the substrate, with each group of chips (red, green, blue, white) positioned to optimize color mixing while maintaining manufacturability. The local arrangement allows close proximity for good color mixing without requiring extreme manufacturing precision.
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 enables a lightweight, easy-to-handle LED filament-type light engine that achieves effective color mixing and varied brightness, suitable for RGB or RGBW applications, with improved omnidirectional light emission and simplified mounting within lamps.
Implementation Method 1
The LED chips of a first group are adapted to emit light having a first color and the LED chips of a second group are adapted to emit light having a second color different from the first color
Data Source
AI summary
A light engine for a semiconductor lamp comprises a substrate and at least two groups of LED chips arranged on the substrate. The LED chips of a first group are adapted to emit light having a first color and the LED chips of a second group are adapted to emit light having a second color different from the first color