| 主权项 |
1. An optical sheet comprising a cured layer of resin whose surface has been structured and which is made of a curable resin composition comprising a compound of the following Formula 1 and a curable resin, said curable resin containing in a molecular chain an element having a slippery property,
wherein the content of the compound represented by Formula 1 is 10-90 parts by weight based on the weight of the curable resin composition, and the content of the curable resin is 0.01-5.0 parts by weight based on the weight of the curable resin composition, wherein the elastic recovery rate of the optical sheet, which is represented by the following Equation 1, is more than 80% as measured when pressing the structured surface with a flat tip at a pressing speed of 0.2031 mN/sec to a maximum compressive force of 1 gf or 2 gf, maintaining the structured surface at the maximum compressive force for 5 seconds when the maximum compressive force has been reached, and then removing the compressive force: wherein R is a hydrogen atom or an alkyl group having 1 to 15 carbon atoms, n is an integer greater than 1, a, b and c are each an integer greater than 0, provided a+b+c=3, x, y and z which are the same or different are each an integer ranging from 2 to 50, and Y is a compound containing at least one benzene ring;
Elastic recovery rate=(D1-D2)/D1×100 Equation 1 wherein D1 signifies a depth compressed by the application of external pressure, and D2 signifies the difference between the height of the optical sheet to which external pressure has not been applied and the height of the optical sheet from which external pressure has been removed to recover the optical sheet, wherein the compound containing at least one benzene ring is selected from the group consisting of the compounds represented by the following Formulas 2 to 4: wherein at least one of R1 to R4, R6 to R10, and R12is —CKH2KO—, —C(═O)O—(CH2)K—CH(OH)—(CH2)K′—, —(CH2)K—(CH(OH)—(CH2)K′O—or —CjH2jNHC(═O)—,wherein K and K′ are each an integer greater than 1 and j is an integer greater than 0, and the remaining radicals of R1 to R4, R6 to R10, and R12 which are the same or different are each a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, an aromatic ring having 6 to 30 carbon atoms, or a compound containing at least one oxygen, nitrogen or sulfur atom and wherein R5 and R11 are independently CH3; wherein at least one of R1 to R6 is —C(═O)O—(CH2)K—CH(OH)—(CH2)K′—, —(CH2)K—CH(OH)—(CH2)K′O—or —CjH2jNHC(═O)—, wherein K and K′ are each an integer greater than 1 and j is an integer greater than 0, and the remaining radicals of R1 to R6 which are the same or different are each a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, an aromatic ring having 6 to 30 carbon atoms, or a compound containing at least one oxygen, nitrogen or sulfur atom; wherein at least one of R1 to R10 is —C(═O)O—(CH2)K—CH(OH)—(CH2)K′—, —(CH2)K—CH(OH)—(CH2)K′O— or —CjH2jNHC(═O)—, wherein K and K′ are each an integer greater than 1 and j is an integer greater than 0, and the remaining radicals of R1 to R10 which are the same or different are each a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, an aromatic ring having 6 to 30 carbon atoms, or a compound containing at least one oxygen, nitrogen or sulfur atom. |
