LED ENCAPSULANT COMPRISING RARE EARTH METAL OXIDE PARTICLES

摘要

The present invention relates to an LED encapsulant comprising rare earth metal oxide particles, and more specifically to an LED encapsulant comprising, in a polymer resin, a compound represented by chemical formula (1) and having a particle size of 10nm-5μm. The encapsulant composition according to the present invention has the advantage of dramatically improving the light extraction efficiency of light formed in an LED chip. [Chemical formula (1)] Ma(OH)b(CO3)cOd, wherein M is Sc, Y, La, Al, Lu, Ga, Zn, V, Zr, Ca, Sr, Ba, Sn, Mn, Bi or Ac. a is 1 or 2, b is 0-2, c is 0-3, and d is 0-3. b, c and d are not simultaneously 0, and b and c are either simultaneously 0 or simultaneously not 0.