公开(公告)号：US20190146280A1

公开(公告)日：2019-05-16

申请号：US16246255

申请日：2019-01-11

申请人： TOYOBO CO., LTD.

发明人： Kouichi MURATA ,  Mitsuharu NAKATANI ,  Yasushi SASAKI

IPC分类号： G02F1/1335 ,  G02B1/111 ,  G02B1/11 ,  G02B5/30

摘要： The invention provides a liquid crystal display device, as well as a polarizer and a protective film suitable for the liquid crystal display device. The liquid crystal display device comprises a backlight light source, two polarizers, and a liquid crystal cell disposed between the two polarizers; the backlight light source being a white light-emitting diode light source; each of the two polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; at least one of the protective films being a polyester film having an adhesion-facilitating layer; the polyester film having a retardation of 3,000 to 30,000 nm; and the adhesion-facilitating layer comprising a polyester resin (A) and a polyvinyl alcohol resin (B).

公开(公告)号：US20210389626A1

公开(公告)日：2021-12-16

申请号：US17281723

申请日：2019-09-27

申请人： TOYOBO CO., LTD.

发明人： Takahisa ABE ,  Toshiki INOUE ,  Kouichi MURATA

IPC分类号： G02F1/1335 ,  C08L67/02 ,  G02B1/14

摘要： The invention provides a liquid crystal display device, a polarizer, and a protective film that enable suppression of the occurrence of rainbow unevenness to improve visibility in a liquid crystal display device including a backlight light source comprising white-light-emitting diode having an emission spectrum that has one or more peak tops in each of the blue region (400 nm or more and less than 495 nm), the green region (495 nm or more and less than 600 nm), and the red region (600 nm or more and 780 nm or less). The protective film contains a polyethylene terephthalate-based resin film that has a retardation of 3000 to 30000 nm, wherein the CTF value of periodic unevenness of the x value of chromaticity at an observation angle of 55 degrees is 1.2 or less.