Flash module for e.g. camera, has wavelength-converting overlay disposed on the LED chip, the overlay comprising quantum dots dispersed in a matrix material

摘要

An LED chip (104), mounted on a substrate (106), emits a first primary light. A wavelength-converting overlay (102) is disposed on the LED chip, the overlay comprising quantum dots (114,116,118) dispersed in a matrix material (122). A second light source provides a second color of light.