Phosphor ink composition

摘要

The present invention provides phosphor inks configured to achieve high efficiency in converting LED light from one wavelength to another. The phosphor ink composition for deposition on an LED device comprises a phosphor component having nano-phosphor particles on the order of 100 to 1000 nanometers, and a curable resin component. In particular, the nano-phosphor particles are uniformly dispersed throughout the ink composition. The nano-phosphor particles may be formed by a size reduction process carried out on larger phosphor particles on the order of 1 to 50 micrometers. Preferably, the size reduction process is based on solvent wet milling. Methods for preparing the phosphor inks based on forming the nano-phosphor particles from larger particles by solvent wet milling are also provided.

主权项

1. A phosphor ink composition for deposition on an LED or an LED device, comprising:
a curable resin component including a UV-curable resin; a phosphor component comprising nano-phosphor particles on the order of 100 to 1000 nanometers, the nano-phosphor particles being uniformly dispersed throughout the ink composition; and a photoinitiator for UV curing, wherein the photoinitiator is present in an amount from approximately 0.2 weight percent to approximately 4 weight percent.