公开(公告)号：US12066646B2

公开(公告)日：2024-08-20

申请号：US18005591

申请日：2021-08-03

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jung Hun You ,  Sang Hum Lee ,  Jun Mo Koo ,  Bong Choon Kim ,  Kwang Ho Shin

IPC: G02B5/30 ,  G02F1/1335

CPC classification number: G02B5/3033 ,  G02F1/133528

Abstract: Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising a polarizer and a protective layer formed on at least one surface of the polarizer, wherein: the polarizing plate comprises a first area and a second area formed within an image display area; the first area and the second area have different single transmittances in the same wavelength; and the first area has a single transmittance of 45% to 85%, a maximum absorbance of 1.0 to 5.0 in a wavelength in a range from about 270 nm to about 325 nm, a maximum absorbance of 0.5 to 4.0 in a wavelength which exceeds about 325 nm and is lower than or equal to 420 nm, and a maximum absorbance of 0.5 or less in a wavelength in a range from about 500 nm to about 800 nm.

公开(公告)号：US11686977B2

公开(公告)日：2023-06-27

申请号：US16764661

申请日：2018-11-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Sang Hum Lee ,  Kyung Il Sul ,  Jung Hun You

IPC: G02F1/13363 ,  C08J5/18 ,  G02F1/1335 ,  G02F1/1343

CPC classification number: G02F1/133634 ,  C08J5/18 ,  G02F1/13363 ,  G02F1/133528 ,  C08J2301/08 ,  C08J2333/08 ,  C09K2323/03 ,  C09K2323/035 ,  G02F1/133637 ,  G02F1/134363

Abstract: Disclosed herein are a retardation film for IPS mode, a polarizing plate including the same, and a liquid crystal display including the same. The retardation film for IPS mode has an out-of-plane retardation at a wavelength of 450 nm (Rth (450) of about −80 nm to 0 nm, an out-of-plane retardation at a wavelength of 550 nm (Rth (550) of about −60 nm to 10 nm, an out-of-plane retardation at a wavelength of 650 nm (Rth (650) of about −60 nm to 10 nm, and an in-plane retardation (Re) at a wavelength of 550 nm of about 0 nm to 10 nm.

公开(公告)号：US11204520B2

公开(公告)日：2021-12-21

申请号：US16756426

申请日：2018-10-10

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sang Hum Lee ,  Kenji Hamada ,  Jin Sook Kim ,  Jung Hun You ,  Jin Hee Choi

IPC: G02F1/1335 ,  G02F1/13363

Abstract: Provided is a polarizing plate for a light-emitting diode and a light-emitting display device including the same, the polarizing plate comprising a polarizing film and a liquid crystal retardation film, wherein the liquid crystal retardation film comprises a laminate made of: a second retardation film having a discotic liquid crystal of which an in-plane retardation Re, in a wavelength of 550 nm, is approximately 220 nm to approximately 280 nm and a biaxial degree (NZ) is approximately 0 to approximately 0.3; and a first retardation film having a nematic liquid crystal of which an in-plane retardation Re, in a wavelength of 550 nm, is approximately 100 nm to approximately 150 nm and a biaxial degree (NZ) is approximately 0.3 to approximately 0.7.