Patent ID: 11921309
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. The polarizing plate according to claim 1, wherein a laminate of the first protective layer and the second protective layer has an out-of-plane retardation variation rate of about −15% to 0%, as calculated by the following Equation 1:

Out-of-plane retardation variation rate=[(A−B)/B]×100,

where B denotes an initial out-of-plane retardation (unit: nm) of the laminate of the first protective layer and the second protective layer at a wavelength of about 550 nm, and
A denotes an out-of-plane retardation (unit: nm) of the laminate of the first protective layer and the second protective layer at a wavelength of about 550 nm after the laminate is left at about 60° C. and about 95% relative humidity (RH) for about 250 hours.