Patent ID: 8319913

Claim:
A resin-type light guide plate composition comprising: urethane-(meth)acrylate oligomer prepared by reacting a reaction product of a compound prepared by reacting divalent polyol and divalent isocyanate with (meth)acrylate monomer including hydroxyl group, as represented by the formula (1); wherein R 1 represents a structure excluding a terminal hydroxyl group from divalent polyol, R 2 represents a structure excluding a terminal isocyanate group from the divalent isocyanate, R 3 represents n is an integer of 1 to 10, and R 4 represents hydrogen or methyl; hydrogen bond type (meth)acrylate including hydroxyl group or carboxyl group; acrylic monomer having a maximum shrinkage rate of 15% or less, represented by the equation (1): Maximum shrinkage rate (%)=−2.58+3000*[number of (meth)acryl functional groups/molecular weight of acrylic monomer]; and <Equation 1> a photoinitiator.