Patent ID: 11894500
Assignee: LG INNOTEK CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  F | IPC G  H

Claim 0:
1. A lighting device comprising:
a substrate;
a plurality of light sources spaced apart from each other on the substrate;
a resin layer disposed on the substrate and configured to seal the plurality of light sources;
a diffusion layer disposed on a surface of the resin layer; and
a phosphor layer disposed on the surface of the resin layer;
wherein the diffusion layer includes a first concave portion having a first depth from an upper surface of the diffusion layer, and a second concave portion having a second depth from the upper surface of the diffusion layer,
wherein the first depth is different than the second depth,
wherein the first and second concave portions are spaced apart from each other in a first direction, and
wherein a width in the first direction of the first concave portion is different than a width in the first direction of the second concave portion.