Wavelength converting device and light emitting device using the same

摘要

Provided is a wavelength converting device having excellent optical output.;The wavelength converting device includes a substrate and a wavelength converting member disposed on the substrate. The wavelength converting member includes a fluorescent material powder and a binder binding the fluorescent material powder. An upper surface of the wavelength converting member serves as a light emitting surface which includes upper surfaces of the fluorescent material powder and an upper surface of the binder. The binder has first recesses formed adjacent to the fluorescent material powder in the upper surface of the binder.

主权项

1. A wavelength converting device comprising:
a substrate; and a wavelength converting member disposed on the substrate; wherein the wavelength converting member comprises a fluorescent material powder and a binder binding the fluorescent material powder, wherein an upper surface of the wavelength converting member is a light emitting surface comprising upper surfaces of the fluorescent material powder and an upper surface of the binder, wherein the binder has a first recess formed adjacent to the fluorescent material powder in the upper surface of the binder, wherein the upper surfaces of the fluorescent material powder are protruded from the upper surface of the binder such that a second recess is formed between the fluorescent material powder, the second recess having a bottom surface that is the upper surface of the binder, and wherein the first recess is formed in the bottom surface of the second recess.