| 摘要 |
A laminated retardation plate of the present invention comprises at least two retardation plates made of stretched films of a thermoplastic resin, wherein under the same temperature condition, at least one retardation plate have the relationship of |X 1 |>|X 2 |, where X 1 represents the dimensional change rate in the direction of slow axis and X 2 represents the dimensional change rate in the direction of fast axis; at least one retardation plate have the relationship of |Y 1 |<|Y 2 |, where Y 1 represents the dimensional change rate in the direction of slow axis and Y 2 represents the dimensional change rate in the direction of fast axis; and the each retardation plate are arranged so as to the direction of slow axes thereof are in the same directions. The retardation value variation of the laminated retardation plate is small in the case where the environmental temperature changes.
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