| 摘要 |
A composite double refraction member, comprising a first double refraction layer and a second double refraction layer, wherein the second double refraction layer is formed on at least one face of the first double refraction layer. The wide angle of visibility of a liquid crystal display device, the compensation of the double refraction of a crystal cell, and the prevention of the coloration of a screen can be realized by the composite double refraction member in which the second double refraction layer having the value of Deltand x/Deltand550 different from the value of Rthx/Rth550 when a wavelength is 400 to 800 nm for the overall composite double refraction member is formed of a polymer such as polyamide and/or which has Delta nd and Rth meeting the requirements of the following expressions (I) and (II). Deltand400/Deltand550 1 (II)
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