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Light-resistant polyaniline light-shielding film and liquid crystal display device using the same

Image Number 3 for United States Patent #5422194.

A light-resistant polyaniline light-shielding film, comprising a thin polyaniline film in which Lewis acid is contained in an amount of 0.1 to 5 mol % per monomer unit of the polyaniline. The thin film is used as a black matrix for a liquid crystal display device. The device thus obtained has high reliability.

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