公开(公告)号：US11602926B2

公开(公告)日：2023-03-14

申请号：US17057328

申请日：2018-10-02

Applicant: TORAY ADVANCED MATERIALS KOREA INC.

Inventor： Seung Hun Han ,  Kil Joong Kim ,  Gi Jeong Moon

IPC: B32B27/36 ,  B29D7/01 ,  B29D11/00 ,  B32B3/12 ,  B32B27/08 ,  B32B27/20 ,  C08L67/02 ,  G02B5/08 ,  B29K67/00 ,  B29K509/08

Abstract: A biaxially oriented polyester reflection film according to an embodiment of the present invention includes: a core layer having a plurality of voids, and containing homo-polyester, copolymer polyester, a resin incompatible with polyester, and inorganic particles; and a skin layer formed at least one surface of the core layer, and containing homo-polyester, copolymer polyester, and inorganic particles, wherein the biaxially oriented polyester reflection film is formed to have a plurality of light focusing structures, each of which has a concave center portion, and which are arranged in a grid pattern.