Phase difference plate, polarizing plate with optical compensation layer, image display device, and image display device with touch panel

摘要

Provided is a phase difference plate whereby an image display device having a neutral hue in an oblique direction can be realized. In this phase difference plate, the in-plane retardation Re satisfies the expressions 100 nm ≤ Re(550) ≤ 160 nm, Re(450)/Re(550) ≤ 1, and Re(650)/Re(550) ≥ 1, and the Nz coefficient satisfies the expressions Nz(550) < 1, 0 ≤ |Nz(450) – Nz(550)| ≤ 0.1, and 0 ≤ |Nz(650) – Nz(550)| ≤ 0.1.