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Summary

High-power Light Emitting Diodes (LEDs) generate significant heat, posing a challenge for thermal management. This review explores LED packaging technologies and structures to improve heat dissipation, focusing on substrate, lens, and phosphor layer designs.

Keywords:
LEDheat dissipationpackaging structurepackaging technology

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Thermal Management

Background:

  • Light Emitting Diodes (LEDs) are integral to modern lighting, medicine, and navigation.
  • The increasing power of LEDs presents a significant thermal management challenge.
  • Effective heat dissipation is crucial for LED performance and longevity.

Purpose of the Study:

  • To review LED packaging technologies and structures for enhanced thermal performance.
  • To introduce technologies that promote heat dissipation in LED packaging.
  • To analyze defects in current LED packaging and propose future directions.

Main Methods:

  • Comprehensive review of existing literature on LED packaging.
  • Analysis of thermal performance in relation to packaging design.
  • Investigation of substrate, lens, and phosphor layer contributions to heat dissipation.

Main Results:

  • Identified key packaging components (substrate, lens, phosphor) influencing thermal management.
  • Detailed examination of various packaging technologies and their thermal efficacy.
  • Highlighted defects in current LED packaging technology and structure.

Conclusions:

  • Optimizing substrate, lens, and phosphor layer design is critical for LED heat dissipation.
  • Addressing packaging defects can significantly improve LED thermal performance.
  • This review provides valuable insights for future LED package design and manufacturing.