The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 01, 2026

Filed:

Mar. 22, 2022
Applicant:

Samsung Sdi Co., Ltd., Yongin-si, KR;

Inventors:

Bong Choon Kim, Suwon-si, KR;

Yeon Ju Jung, Suwon-si, KR;

Seo Young Kang, Suwon-si, KR;

Seon Oh Hwang, Suwon-si, KR;

Kwang Ho Shin, Suwon-si, KR;

Jong Kyu Choi, Suwon-si, KR;

Il Woong Baek, Suwon-si, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10K 59/80 (2023.01); G02B 1/08 (2006.01); G02B 1/14 (2015.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
H10K 59/8791 (2023.02); G02B 1/08 (2013.01); G02B 1/14 (2015.01); G02B 5/305 (2013.01); G02B 5/3083 (2013.01);
Abstract

Provided are a polarizing plate and an optical display device including same, the polarizing plate comprising: a polarizer; and a laminate having a first phase difference layer and a second phase difference layer laminated on the lower surface of the polarizer, wherein the short wavelength dispersion of the first phase difference layer is less than the short wavelength dispersion of the second phase difference layer, the first phase difference layer has, at a wavelength of 550 nm, an in-plane phase difference of 280 nm to 400 nm and a degree of biaxiality of more than 1 and less than 1.6, the second phase difference layer has, at a wavelength of 550 nm, an in-plane phase difference of 140 nm to 260 nm 550 nm and a degree of biaxiality of less than 0, and the difference between the in-plane phase difference of the first phase difference layer and the in-plane phase difference of the second phase difference layer at a wavelength of 550 nm is 130 nm to 150 nm.


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