Phase difference film, phase difference film composite and liquid crystal display device using the same
First Claim
1. A retardation film consisting of a single polymer film, which has a wavelength range in which the retardation value is positive and a wavelength range in which it is negative in a wavelength range of 400-800 nm, which satisfies the following inequality (1) and/or (2), and which has a water absorption of no greater than 1% by mass,
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Abstract
A retardation film that can compensate for the optical properties of the liquid crystal cells of a liquid crystal display device and thereby enhance image quality. The retardation film consists of a single polymer film, which has a wavelength range in which the retardation value is positive and a wavelength range in which it is negative in a wavelength range of 400-800 nm, and which satisfies the following inequality (1) and/or (2) and has a water absorption of no greater than 1% by mass.
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Citations
15 Claims
- 1. A retardation film consisting of a single polymer film, which has a wavelength range in which the retardation value is positive and a wavelength range in which it is negative in a wavelength range of 400-800 nm, which satisfies the following inequality (1) and/or (2), and which has a water absorption of no greater than 1% by mass,
Specification