Polarizing plate and optical display apparatus comprising the same
US12253705B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jul 21, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Mar 8, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/11
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.