Dual-Phosphor Illumination Structure for Clean Multi-Color Emission
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Solution Overview
Problem
Conventional vehicle illumination devices lack the ability to display various colors, limiting their functional and aesthetic applications due to the nature of single-color light emission from conventional lighting devices.
Innovation Solution
An illumination device with a substrate, light emitting devices, a resin layer, and phosphor layers of different colors separated by a light blocking layer, which prevents color mixing by positioning the light blocking layer between the phosphor layers to control light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple phosphor layers of different colors are disposed adjacent to each other, then multi-color light emission is achieved, but color mixing occurs between adjacent phosphor layers
Solution Approach 1:
A light blocking layer is introduced as an intermediary between adjacent phosphor layers of different colors. This light blocking layer prevents light from one phosphor layer from reaching adjacent phosphor layers, thereby preventing color mixing while allowing each phosphor layer to emit its characteristic color independently. The light blocking layer acts as a mediator that enables multi-color emission without the harmful side effect of color contamination.
2Manufacturing precision
If a light blocking layer is added between phosphor layers, then color mixing is prevented, but device structure becomes more complex
Solution Approach 1:
The light blocking layer is merged with the resin layer that encapsulates the phosphor layers. By integrating the light blocking function into the existing resin matrix, the patent avoids adding a completely separate structural element. The resin layer serves dual purposes: encapsulation/protection of phosphor layers and light blocking between adjacent colors, thereby reducing overall structural complexity.
3Device complexity
If conventional single-color lighting devices are used, then device structure is simple, but multi-color light emission capability is lost
Solution Approach 1:
The illumination device is segmented into multiple independent phosphor layers, each responsible for emitting a specific color. This segmentation allows each layer to be optimized for its specific color emission while maintaining relative structural simplicity. The modular phosphor layer structure enables color variety without requiring a completely complex redesign of the entire lighting system.
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
Enables the realization of multiple colors on the light emitting surface, preventing unwanted color mixing and improving adhesion and process simplicity through the use of a printing technique for the light blocking layer.
Implementation Method 1
The phosphor converts light emitted from the light emitting device into a specific color to emit light
Implementation Method 2
a light blocking layer disposed between the first phosphor layer and the second phosphor layer
Data Source
AI summary
An illumination device disclosed in an embodiment of the invention includes a substrate, a plurality of light emitting elements disposed on the substrate, a resin layer disposed on the plurality of light emitting elements, a first phosphor layer disposed on an upper surface of the resin layer, and a plurality of second phosphor layers disposed on side surfaces of the resin layer, and a first light blocking layer disposed between the first phosphor layer and the second phosphor layer. The first phosphor layer and the second phosphor layer may have different colors.