| 摘要 |
<p>Disclosed is a film optical waveguide (24) comprising a protective layer (8), a lower cladding layer (10) formed on the upper surface of the protective layer (8), a core portion (18) formed on the upper surface of the lower cladding layer (10) and having a specific width, an upper cladding layer (20) formed on top of the lower cladding layer (10) and the core portion (18), and a protective layer (22) formed on the upper surface of the upper cladding layer (20). The protective layers (8, 22) are formed by photocuring a photocurable resin composition containing a urethane (meth)acrylate oligomer (A), a reactive diluted monomer (B), an unsaturated group-containing (meth)acrylic polymer (C) and a photopolymerization initiator (D). This film optical waveguide (24) is excellent in bending durability and transparency.</p> |
