公开(公告)号：US20220066263A1

公开(公告)日：2022-03-03

申请号：US17310144

申请日：2020-01-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kazuhiko Toyooka ,  Shingo Amari ,  Sayaka Kado ,  Kohei Kawahara ,  Noboru Iwata ,  Kazuhiko Minami ,  Yukio Ishizuki

IPC: G02F1/1335 ,  G02F1/13357 ,  G02F1/1333

Abstract: A backlight according to an embodiment includes a reflecting portion, a nonwoven fabric disposed opposing the reflecting portion, a reflective polarization portion disposed along a surface of the nonwoven fabric opposite to the surface of the nonwoven fabric opposing the reflecting portion, a side wall surrounding a cavity formed between the reflecting portion and the nonwoven fabric, and a light source disposed proximate the side wall and configured to illuminate light in the cavity, wherein a haze value of the nonwoven fabric is 90% or greater, an effective transmittance of the nonwoven fabric is 0.8 or greater, and a basis weight of the nonwoven fabric is 60 g/m2 or greater.