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.
Patent No.:
Date of Patent:
Apr. 08, 2025
Filed:
Jun. 10, 2020
Samsung Sdi Co., Ltd., Yongin-si, KR;
Yoon Jung Kim, Suwon-si, KR;
Sang Hum Lee, Suwon-si, KR;
Ri Ra Jung, Suwon-si, KR;
Yeon Ju Jung, Suwon-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a first phase difference layer, a second phase difference layer and a third phase difference layer which are sequentially stacked on the lower surface of the polarizer. The first phase difference layer comprises a positive C phase difference layer. The second phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 200 nm to 280 nm in a wavelength of 550 nm. The third phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 80 nm to 145 nm in a wavelength of 550 nm. When the absorption axis of the polarizer is 0°, the angle formed by the slow axis of the second phase difference layer is approximately +14° to +24° or approximately −24° to −14°, and the angle formed by the slow axis of the third phase difference layer is approximately +79° to +89° or approximately −89° to −79°.