LIGHT EMITTING DEVICE

摘要

A light emitting module including a substrate, a plurality of first light emitting diode (LED) chips and a plurality of second LED chips is provided. The substrate has a cross-shaped central region and a peripheral region surrounding the cross-shaped central region. The first LED chips are disposed on the substrate and at least located in the cross-shaped central region. The second LED chips are disposed on the substrate and at least located in the peripheral region. A size of each second LED chip is smaller than a size of each first LED chip. The number of the first LED chips located in the peripheral region is smaller than that in the cross-shaped central region. The number of the second LED chips located in the cross-shaped central region is smaller than that in the peripheral region.

主权项

1. A white light emitting device, comprising:
a substrate; a plurality of first light emitting diode (LED) chips, each emitting light of a dominant wavelength in a range from 440 nm to 480 nm, the first LED chips being mounted on and electrically connected to the substrate, and a difference between the dominant wavelengths of at least two first LED chips being greater than or equal to 5 nm; a plurality of second LED chips, each emitting light of a dominant wavelength in a range from 600 nm to 760 nm, the second LED chips being mounted on and electrically connected to the substrate, and a difference between the dominant wavelengths of at least two second LED chips being greater than or equal to 5 nm; and a fluorescent layer, disposed on the substrate, converting a portion of light of the first LED chips to generate a fluorescent light.