Patent ID: 7754158

Claim:
A filter assembly for an air purifier comprising: base plates that are curved and have a lamp insertion hole formed at the center of said base plates so that an ultraviolet (UV) lamp can be inserted thereto; a gap retaining member that keeps the base plates spaced apart from each other and combined with each other, wherein surfaces of the base plates are coated with either a photocatalyst material and silver nanoparticles, wherein a plurality of projecting members are formed on the surfaces of the base plates to be spaced apart from each other, wherein the plurality of projecting members in the base plates are coated with at least one of a photocatalyst material and silver nanoparticles, and areas between each of the plurality of projecting members are coated with at least one of the photocatalyst material and the silver nanoparticles other than the material coated on the plurality of projecting members.