Polarizing plate with optical compensation layer and its manufacturing method, and image display device

Abstract

This invention provides a polarizing plate with an optical compensation layer, which can suppress oblique reflection during black display and suppress oblique red hues. The polarizing plate with an optical compensation layer according to an embodiment of the present invention includes a polarizing element, a first optical compensation layer, a second optical compensation layer, a third optical compensation layer, and a fourth optical compensation layer. The first, second, third, and fourth optical compensation layers all exhibit refractive index characteristics of nx > nz > ny, and satisfy 1.10 < Re(450) / Re(550) < 1.40. The Nz coefficient of the first optical compensation layer is 0.10 or more and 0.4 or less, or 0.65 or more and 0.85 or less. The Nz coefficients of the second, third, and fourth optical compensation layers are all 0.40 or more and 0.60 or less.

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