Integrated LED Package with Cavity Segmentation
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Solution Overview
Problem
Conventional light emitting devices lack the ability to emit white and multi-color lights from a single package effectively, resulting in suboptimal color rendering characteristics and light intensity.
Innovation Solution
A light emitting device comprising a substrate with a cavity, where a white light emitting unit and a multi-color light emitting unit are integrated, using at least one blue LED, a fluorescent substance, and red and green LEDs, allowing for simultaneous emission of white and multi-color lights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single package contains only white light emitting diodes or only multi-color light emitting diodes, then the device structure is simple, but the color rendering characteristics and light intensity are insufficient
Solution Approach 1:
The patent combines white light emitting diodes and multi-color light emitting diodes into a single package, allowing both types of LEDs to coexist and work together. This merging approach enables the device to achieve superior color rendering characteristics and light intensity by utilizing the complementary properties of white light (broad spectrum) and multi-color LEDs (specific wavelength coverage), while maintaining a relatively simple integrated package structure.
2Illumination intensity
If white light emitting diodes and multi-color light emitting diodes are integrated in a single package, then color rendering characteristics and light intensity are improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent divides the package into distinct regions: a first cavity for mounting white light emitting diodes and a second cavity for mounting multi-color light emitting diodes. This segmentation allows each type of LED to be mounted and wired independently, simplifying the manufacturing process. The separate cavities enable parallel processing and reduce the complexity of wire bonding and electrical connection, making it easier to manufacture despite the integrated design.
3Ease of manufacture
If separate packages are used for white light and multi-color LEDs, then the manufacturing process is simple, but the device size and structural complexity increase
Solution Approach 1:
The patent merges multiple LED packages into a single integrated package structure with multiple cavities. By combining white light LEDs and multi-color LEDs in one package, the device reduces overall structural complexity and size compared to using separate packages. The integrated design allows for unified mounting and wiring, simplifying the overall device architecture while maintaining ease of manufacture through the segmented cavity design.
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 device enhances color rendering characteristics and light intensity by enabling the simultaneous operation of white and multi-color LEDs in a single package, suitable for use in portable terminals and indicator applications.
Implementation Method 1
a white light emitting unit on a second region of the cavity and comprises at least one blue LED and a fluorescent substance
Implementation Method 2
a white light emitting unit on a second region of the cavity and comprises at least one blue LED and a fluorescent substance
Implementation Method 3
a multi-color light emitting unit that is on a first region of the cavity and comprises at least one red LED, green LED and blue LED
Data Source
AI summary
Disclosed is a light emitting device and a method of manufacturing the same. The light emitting device comprises a substrate comprising a cavity, a multi-color light emitting unit on a first region of the cavity, and a white light emitting unit on a second region of the cavity.