CPC G02F 1/13363 (2013.01) [G02F 1/1337 (2013.01); G02F 1/133528 (2013.01); B32B 2457/20 (2013.01); B32B 2457/202 (2013.01); C09K 2323/03 (2020.08); C09K 2323/031 (2020.08); C09K 2323/035 (2020.08); G02F 1/133742 (2021.01); G02F 2201/086 (2013.01); G02F 2202/40 (2013.01)] | 20 Claims |
1. A liquid crystal retardation film comprising:
a first retardation layer having no alignment layer, a UV absorbent primer layer, and a second retardation layer sequentially stacked in the stated order,
wherein each of the first retardation layer and the second retardation layer is a liquid crystal layer,
wherein the liquid crystal retardation film has a retardation variation rate of about 3% or less, as calculated by Equation 1:
Retardation variation rate=|B−A|/A×100,
where A is an initial Re (unit: nm) of the liquid crystal retardation film at a wavelength of 550 nm; and
B is an Re (unit: nm) of the liquid crystal retardation film at a wavelength of 550 nm after the second retardation layer of the liquid crystal retardation film is irradiated with UV light at a wavelength of 300 nm to 400 nm for 250 hours,
wherein the first retardation layer comprises a crosslinked product of liquid crystals having photosensitive groups and only photosensitive groups irradiated with a linearly polarized light are crosslinked.
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