Patent ID: 11897981
Assignee: LG INNOTEK CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  F  G  H  B | IPC C  F  G

Claim 4:
5. A lighting device comprising:
a substrate;
a light emitting device disposed on the substrate;
a resin layer sealing the light emitting device on the substrate; and
a diffusion layer or a reflective substrate disposed on the resin layer,
wherein the resin layer includes an oligomer, a monomer and an additive,
wherein the monomer include acrylate having an epoxy group without using acrylate having a hydroxyl group, and the monomer includes IBOA (Iso-bornyl Acrylate), two or more dilution monomers, and glycidyl methacrylate (GMA),
wherein the additive includes a photoinitiator and an amine-based light stabilizer,
wherein in the oligomer and the monomer, content of the oligomer is 20-25%, content of the IBOA is 40-50%, content of the two or more dilution monomers is 10-20%, and content of the glycidyl methacrylate is 10 to 15%,
wherein the resin layer is a curable transparent resin cured by ultraviolet light,
wherein a content of the monomer in a total content of the optical resin is three times higher than the content of the oligomer.