Polarizing plate and optical display device including same

The invention provides a polarizing plate and an optical display device including the same. The polarizing plate includes: a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on the lower surface of the polarizer. The first retardation layer has an in-plane retardation (Re) of 200 nm to 250 nm at a wavelength of 550 nm; the second retardation layer has an in-plane retardation (Re) of 80 nm to 140 nm at a wavelength of 550 nm; and the total transmittance difference between the total transmittance at a wavelength of 450 nm and the total transmittance at a wavelength of 420 nm of the polarizing plate is 2% or more. 本发明提供一种偏光板和包含偏光板的光学显示设备。偏光板包含：偏光片；以及第一延迟层和第二延迟层，其依序堆叠于偏光片的下表面上。第一延迟层在550纳米的波长下具有200纳米到250纳米的平面内延迟(Re)；第二延迟层在550纳米的波长下具有80纳米到140纳米的平面内延迟(Re)；且偏光板在450纳米的波长下的总透射率与在420纳米的波长下的总透射率之间具有2％或大于2％的总透射率差。