ABSTRACT
From the exterior, high-brightness LEDs may bear a resemblance to their low-brightness counterparts: miniature dots of bright white light in a surface mount package, habitually having a domed lens to collimate the emitted light. But the inner views of these LEDs are immeasurably dierent. erefore, it is essential to examine the high-brightness LEDs more profoundly from the point of view of structural design, fabrication approaches, and material issues, in order to understand their operation and constraints. In other words, the inside saga of high-brightness LEDs needs vigilant attention.
