Appotronics Corporation Limited

Hu Xu

Qian Li

Zifeng Tian

Yanzheng Xu

A wavelength conversion device, a manufacturing method thereof, and a related illumination device. The wavelength conversion device comprises a fluorescent powder layer () that is successively stacked, a diffuse reflection layer (), and a high-thermal-conductivity substrate (). The diffuse reflection layer () comprises white scattered particles for scattering the incident light; the high-thermal-conductivity substrate () is one of an aluminum nitride substrate, a silicon nitride substrate, a silicon carbide substrate, a boron nitride substrate, and a beryllium oxide substrate. The wavelength conversion device has good reflectivity and thermal stability.

Wavelength conversion device, manufacturing method thereof, and related illumination device

A diffuse reflection material, a diffuse reflection layer, a wavelength conversion device, and a light source system are disclosed. The diffuse reflection material includes white scattering particles and an adhesive agent, where the whiteness of the white scattering particles is greater than 85, and the white scattering particles contain high reflection scattering particles with a whiteness of greater than 90, high refraction scattering particles with a refractive index of greater than or equal to 2.0, and high thermal conductivity scattering particles, where the high thermal conductivity scattering particles are boron nitrite and/or aluminum nitride particles, and the particle shape of the high thermal conductivity scattering particles is rod-like or flat. The reduction in the thickness of the diffuse reflection layer is realized while keeping a high reflectivity, thus causing the wavelength conversion device to have both a high light efficiency and high heat stability.

Growing community of inventors

Shenzhen, China

Hu Xu