公开(公告)号：US11681085B2

公开(公告)日：2023-06-20

申请号：US16941252

申请日：2020-07-28

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: G02B5/30

CPC classification number: G02B5/3083 ,  G02B5/3041

Abstract: A polarizing plate and an optical display apparatus are provided. A polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a short wavelength dispersion of about 1 to about 1.03, a long wavelength dispersion of about 0.98 to about 1, and an in-plane retardation of about 180 nm to about 220 nm at a wavelength of 550 nm, the second retardation layer has a short wavelength dispersion of about 1 to about 1.1, a long wavelength dispersion of about 0.96 to about 1, and an in-plane retardation Re of about 70 nm to about 120 nm at a wavelength of 550 nm, and a ratio of out-of-plane retardation of the second retardation layer at a wavelength of 550 nm to thickness thereof is about −33 nm/μm to about −15 nm/μm.

公开(公告)号：US12210177B2

公开(公告)日：2025-01-28

申请号：US17632213

申请日：2020-08-07

Applicant: Samsung SDI Co., Ltd.

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

IPC: G02B5/30 ,  G02F1/1335

Abstract: Provided is a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a stack body of a first phase difference layer and a second phase difference layer stacked on a lower surface of the polarizer, wherein the first phase difference layer satisfies Equation 1, the second phase difference layer satisfies Equation 2, the sum of an in-plane phase difference at a wavelength of 550 nm between the first phase difference layer and the second phase difference layer is about 100 nm to about 110 nm, the sum of a thickness direction phase difference at a wavelength of 550 nm between the first phase difference layer and the second phase difference layer is about −30 nm to about +10 nm, and the second phase difference layer comprises a fluorine-based phase difference layer.

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：US12253705B2

公开(公告)日：2025-03-18

申请号：US17381550

申请日：2021-07-21

Applicant: Samsung SDI Co., Ltd.

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

IPC: G02B5/30 ,  G02B1/04 ,  G02F1/13363

Abstract: A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has an in-plane retardation of about 180 nm to about 220 nm at a wavelength of about 550 nm; and the second retardation layer has an in-plane retardation of about 80 nm to about 100 nm at a wavelength of about 550 nm.

公开(公告)号：US12158600B2

公开(公告)日：2024-12-03

申请号：US18330091

申请日：2023-06-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jun Mo Koo ,  Jung Hun You ,  Sang Hum Lee ,  Bong Choon Kim ,  Yoon Jung Kim ,  Ri Ra Jung ,  Kyu Sik Kim ,  Kwang Ho Shin ,  Han Mam Jeong ,  Eun Su Park

IPC: G02B5/30 ,  G02F1/1335

Abstract: A polarizing plate and an optical display apparatus including the same are provided. The polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer. The first retardation layer has an in-plane retardation (Re) of 200 nm to 250 nm at a wavelength of 550 nm; the second retardation layer has an in-plane retardation (Re) of 80 nm to 140 nm at a wavelength of 550 nm; and the polarizing plate has a total transmittance difference of 2% or more between total transmittance at a wavelength of 450 nm and total transmittance at a wavelength of 420 nm.

公开(公告)号：US12271016B2

公开(公告)日：2025-04-08

申请号：US18312960

申请日：2023-05-05

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: G02B5/30

Abstract: A polarizing plate and an optical display apparatus are provided. A polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a short wavelength dispersion of about 1 to about 1.03, a long wavelength dispersion of about 0.98 to about 1, and an in-plane retardation of about 180 nm to about 220 nm at a wavelength of 550 nm, the second retardation layer has a short wavelength dispersion of about 1 to about 1.1, a long wavelength dispersion of about 0.96 to about 1, and an in-plane retardation Re of about 70 nm to about 120 nm at a wavelength of 550 nm, and a ratio of out-of-plane retardation of the second retardation layer at a wavelength of 550 nm to thickness thereof is about −33 nm/μm to about −15 nm/μm.

公开(公告)号：US11880055B2

公开(公告)日：2024-01-23

申请号：US17630469

申请日：2020-07-17

Applicant: Samsung SDI Co., Ltd.

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

IPC: G02B5/30 ,  G02B1/14 ,  G02B5/22 ,  G02F1/1335

CPC classification number: G02B5/3033 ,  G02B1/14 ,  G02B5/223 ,  G02F1/133509 ,  G02F1/133528

Abstract: A polarizing plate and a display apparatus including the same. The polarizing plate includes: a polarizer and a protective film stacked at least on one surface of the polarizer, wherein the polarizing plate includes at least a depolarization region in an in-plane direction thereof, and the depolarization region has a maximum absorbance of 0.5 to 1.5 in the wavelength range of 380 nm to 420 nm and a light transmittance ratio (ratio of light transmittance at a wavelength of 590 nm to light transmittance at a wavelength of 400 nm) of 1 to 2.

公开(公告)号：US11726248B2

公开(公告)日：2023-08-15

申请号：US17831282

申请日：2022-06-02

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jun Mo Koo ,  Jung Hun You ,  Sang Hum Lee ,  Bong Choon Kim ,  Yoon Jung Kim ,  Ri Ra Jung ,  Kyu Sik Kim ,  Kwang Ho Shin ,  Han Mam Jeong ,  Eun Su Park

IPC: G02F1/1335 ,  G02B5/30

CPC classification number: G02B5/3083 ,  G02F1/133528

Abstract: A polarizing plate and an optical display apparatus including the same are provided. The polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer. The first retardation layer has an in-plane retardation (Re) of 200 nm to 250 nm at a wavelength of 550 nm; the second retardation layer has an in-plane retardation (Re) of 80 nm to 140 nm at a wavelength of 550 nm; and the polarizing plate has a total transmittance difference of 2% or more between total transmittance at a wavelength of 450 nm and total transmittance at a wavelength of 420 nm.