LED Package Reflective Structure Insulation
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Solution Overview
Problem
Conventional light emitting diodes (LEDs) face challenges in achieving high light efficiency and reliability, particularly due to the need for additional insulating layers that can increase complexity and cost, and the risk of electrode delamination.
Innovation Solution
A light emitting diode (LED) package with a reflective structure having multiple layers of different refractive indices is integrated below the light emitting structure, which serves both as a light reflector and insulator, eliminating the need for additional insulating layers and enhancing electrode stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional insulating layers are formed to prevent electrode delamination, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The reflective structure is integrated to perform dual functions: reflecting light to improve light efficiency and providing electrical insulation to prevent electrode delamination. This merging of functions eliminates the need for separate insulating layers, reducing structural complexity while maintaining reliability.
Solution Approach 2:
The reflective structure is designed as a multi-functional component that simultaneously serves optical reflection and electrical insulation purposes. By making the reflective structure universal, the patent reduces the total number of layers needed in the device stack.
2Reliability
If additional insulating layers are formed to prevent electrode delamination, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The reflective structure is integrated to perform dual functions: reflecting light to improve light efficiency and providing electrical insulation to prevent electrode delamination. This merging of functions eliminates the need for separate insulating layers, reducing structural complexity while maintaining reliability.
Solution Approach 2:
The reflective structure is designed as a multi-functional component that simultaneously serves optical reflection and electrical insulation purposes. By making the reflective structure universal, the patent reduces the total number of layers needed in the device stack.
3Illumination intensity
If light efficiency is improved by adding reflective structures, then light output increases, but device complexity increases
Solution Approach 1:
The reflective structure is integrated to perform dual functions: reflecting light to improve light efficiency and providing electrical insulation to prevent electrode delamination. This merging of functions eliminates the need for separate insulating layers, reducing structural complexity while maintaining reliability.
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
This configuration improves light efficiency by reflecting light and prevents electrode short-circuiting, thereby simplifying the structure, reducing costs, and enhancing the reliability of the LED package.
Implementation Method 1
since the reflective structure capable of reflecting light is formed below the light emitting structure, the light efficiency may be improved
Implementation Method 2
the reflective structure is allowed to have an insulating function as well as a light reflecting function
Data Source
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AI summary
Disclosed is a light emitting device. The light emitting device includes a light emitting structure below a substrate, in which at least one first contact area and at least one second contact area are defined, and a plurality of layers having mutually different refractive indexes below the light emitting structure.