Polarizing film, image display device, and method for producing polarizing film

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United States of America Patent

PATENT NO 9297931
APP PUB NO 20140246632A1
SERIAL NO

14352212

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides a polarizing film having a high dichroic ratio. The polarizing film contains a disazo compound represented by the following general formula (1). In the general formula (1), Q1 represents a phenyl group having at least one —SO3M group; Q2 represents a naphthylene group having at least one —SO3M group; X represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a thioalkyl group having 1 to 4 carbon atoms, a halogeno group, or a polar group; subscript k denotes the number of substitutions of X and represents an integer of 0 to 5; and M represents a counter ion, where when k is an integer of 2 or more, Xs are the same or different.

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Patent Owner(s)

  • NITTO DENKO CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kurogi, Miyuki Ibaraki, JP 20 62
Nakanishi, Sadahiro Ibaraki, JP 29 119

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