Composition and Preparation method of yellow silicates phosphor for white LED and AM LCD

摘要

The present invention is a white light emitting diode (LED), and as active on the strontium silicate-based yellow phosphor and a preparation method thereof is applied to the light-emitting type liquid crystal display (LCD), and more particularly europium oxide as active ingredient a strontium silicate matrix (Eu ₂ O ₃₎ a very high luminous efficiency when the was added to the mixture, and by carrying out the process and a heat treatment step of drying in a certain condition, it applied to a white light emitting diode (LED) and an active light-emitting type liquid crystal display (LCD) for exciting the long wavelength ultraviolet having the following relates to a process for preparing a strontium silicate-based yellow phosphor and a phosphor represented by the general formula (1).; _{Sr 2-x SiO 4: Eu} 2+ x ; In Formula 1, x is 0.001 ≤x ≤1.