LED Encapsulating Body Concave-Convex Structure for Light Extraction
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Solution Overview
Problem
Traditional light emitting diodes (LEDs) face challenges in achieving high luminous intensity and light extraction efficiency while maintaining a small size, as the use of convex lenses increases manufacturing costs and height, and can lead to machine-stuck issues during testing.
Innovation Solution
A light emitting diode with a bowl-shaped shell and encapsulating body featuring a concave-convex structure that includes convex and concave elements, which enhances light concentration and extraction efficiency without increasing the overall height, thus improving luminous intensity and uniformity while preventing machine-stuck issues during testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a convex lens is assembled on LED after being packaged, then the luminous intensity can be improved, but the manufacturing cost is increased and the height of the LED unit is increased
Solution Approach 1:
The patent merges the light concentrating function into the encapsulating body itself by forming a convex structure directly on the upper surface of the encapsulating body. This integration eliminates the need for a separate assembled convex lens, thereby reducing manufacturing complexity and cost while maintaining the light concentration effect for improved luminous intensity.
Solution Approach 2:
The encapsulating body is designed to serve multiple functions: it provides mechanical protection, optical encapsulation, and light concentration. By incorporating the convex light-concentrating structure directly into the encapsulating body, the component achieves multi-functionality, eliminating the need for additional separate components and reducing overall device complexity.
2Illumination intensity
If a convex lens is assembled on LED after being packaged, then the luminous intensity can be improved, but the height of the LED unit is increased
Solution Approach 1:
The light concentrating function is merged into the encapsulating body by forming a convex structure on its upper surface. This integration allows the light concentration effect to be achieved within the existing height envelope of the LED package, eliminating the need for additional height that would be required by a separate assembled lens.
3Illumination intensity
If a convex lens is assembled on LED after being packaged, then the luminous intensity can be improved, but the machine-stuck issue occurs during testing
Solution Approach 1:
The convex light-concentrating structure is merged into the encapsulating body as an integrated feature rather than a separate component. This integration eliminates the additional height and protrusion that would cause machine-stuck issues during automated testing, while still providing the necessary light concentration for improved luminous intensity.
4Reliability
If the height of the encapsulating body is reduced to solve machine-stuck issues, then the machine-stuck issue is solved, but the light extraction efficiency may be compromised
Solution Approach 1:
The encapsulating body features a non-uniform height distribution with a convex structure on the upper surface that is strategically positioned to concentrate light. This local quality variation allows the overall height to be reduced for reliability while the localized convex region maintains effective light extraction and concentration.
Solution Approach 2:
The convex structure on the upper surface of the encapsulating body uses curved geometry to concentrate light. This curvature enables effective light concentration and extraction efficiency while maintaining a compact overall height that prevents machine-stuck issues during testing.
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 concave-convex structure design effectively increases luminous intensity and light extraction efficiency while maintaining a compact size, improving the performance of the LED and preventing machine-stuck issues during testing.
Implementation Method 1
the convex structure is designed to concentrate light and increase luminous intensity
Implementation Method 2
the concave structures are designed to reduce light-blocked influence by shell and increase light extraction efficiency
Data Source
AI summary
A light emitting diode of the present invention comprises a support frame, a shell, a light emitting diode chip and an encapsulating body. The shell is used to accommodate the support frame. The shell has a bowl-shaped structure and the bowl-shaped structure has two opposite first walls and two opposite second walls. The upper edge of the second wall is a concave-convex structure. The encapsulating body is used to package the bowl-shaped structure and the encapsulating body has a concave-convex structure similar to the concave-convex structure of the bowl-shaped structure. The concave-convex structure comprises a concave portion and a convex portion. The structure of the light emitting diode is simplified. The luminous intensity and the light extraction efficiency of the light emitting diode are enhanced and the thickness of the light emitting diode is not increased.