Cellulose acylate film, polarizer, and liquid crystal display device
AssigneeFUJIFILM Corporation
InventorsTakashi TAMADA, Akihiro MATSUFUJI, Jun TAKEDA
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Abstract
A cellulose acylate film containing a cellulose acylate, that has an aromatic group-containing acyl group and satisfies the formulae (I) and (II): 0.9≦DSA≦2.0 (I) 0.9≦DS≦2.0 (II) wherein DSA is a degree of substitution with the aromatic group-containing acyl group and DS is a total degree of substitution.
Claims11
A cellulose acylate film composed of a composition that comprises at least one cellulose acylate, wherein the cellulose acylate has an aromatic group-containing acyl group, Substituent A, and satisfies the following formulae (I) and (II):
- 0.9≦DSA<2.0 (I)
- 0.9≦DS<2.0 (II)
- wherein DSA is a degree of substitution with the Substituent A, and DS is a total degree of substitution.
A polarizer having a polarizing film and a cellulose acylate film, wherein the cellulose acylate film is composed of a composition that comprises at least one cellulose acylate, wherein the cellulose acylate has an aromatic group-containing acyl group, Substituent A, and satisfies the following formulae (I) and (II):
- 0.9≦DSA<2.0 (I)
- 0.9≦DS<2.0 (II)
- wherein DSA is a degree of substitution with the Substituent A, and DS is a total degree of substitution.
An image display device having a polarizer having a polarizing film and a cellulose acylate film, wherein the cellulose acylate film is composed of a composition that comprises at least one cellulose acylate, wherein the cellulose acylate has an aromatic group-containing acyl group, Substituent A, and satisfies the following formulae (I) and (II):
- 0.9≦DSA<2.0 (I)
- 0.9≦DS<2.0 (II)
- wherein DSA is a degree of substitution with the Substituent A, and DS is a total degree of substitution.
Dependencies are inferred from the claim text.