Patent ID: 8921445

Claim:
A curable adhesive composition, comprising: at least one high index-high viscosity component having a refractive index, before curing, of at least 1.56 at 25° C., and a viscosity, before curing, of at least 15,000 cP at 25° C.; a photoinitiator; and 5 wt% to 25% of at least one naphthalene component selected from the group consisting of 1-chloro naphthalene; 1-bromo naphthalene; and 1-naphthaldehyde; wherein the adhesive composition has a refractive index, after curing, in a range from 1.64 to 1.74; wherein the high index-high viscosity component is selected from the group consisting of: brominated aromatic urethane acrylate; tribromophenyl acrylate; and 9,9-bis{4-(2-cryloloxyethoxy)phenyl}fluorene.