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US 12,010,900 B2Granted
Circular polarizing plate
AssigneeLG Chem, Ltd.
InventorsYeon Keun Lee, Hyun Hee Son, Mun Kyu Joo, Deok Hwan Kim, Dong Choon Kim
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Abstract
Provided is a circularly polarizing plate capable of improving a reflection color by using a retardation film with flat dispersion characteristics, and an OLED device comprising the circularly polarizing plate.
Claims13
A circularly polarizing plate comprising sequentially:
- an antireflection film;
- a polarizer;
- a retardation film having an R(450)/R(550) value of 0.99 to 1.01 and having a slow axis to form 37 to 43 degrees with an absorption axis of the polarizer, wherein R (λ) is an in-plane retardation value for a wavelength of λ nm;
- and
- a pressure-sensitive adhesive layer, wherein the circularly polarizing plate has a transmittance of 30% or less for a wavelength of 430 nm.
2 more elements
Dependencies are inferred from the claim text.