OPTICALLY ANISOTROPIC SUBSTANCE

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United States of America Patent

APP PUB NO 20100297367A1
SERIAL NO

12781201

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Abstract

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Subject to be Solved The invention aims to provide a polyamic acid-type photo-alignment layer in a heating process only below approximately 140° C., and to provide an optically anisotropic substance in which various polymerizable liquid crystal compositions are uniformly oriented by use of the layer.Means for Solving the Subject An optically anisotropic substance obtained by applying a polyamic acid varnish which is a composition including a polyamic acid having a divalent azobenzene group in the principal chain or its derivative, or a composition including a mixture of both this polyamic acid or its derivative and other polyamic acids or its derivative as a polymer component, to a supporting substrate, by drying the resultant layer at a temperature range of approximately 50° C. to approximately 140° C., by carrying out alignment treatment by irradiation of the layer with light, applying a polymerizable liquid crystal composition to a alignment layer formed by means of the treatment, and polymerizing the composition.

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Patent Owner(s)

Patent OwnerAddress
JNC PETROCHEMICAL CORPORATION2-1 OTEMACHI 2-CHOME CHIYODA-KU TOKYO 100-0004

International Classification(s)

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  • 2010 Application Filing Year
  • C09K Class
  • 1626 Applications Filed
  • 977 Patents Issued To-Date
  • 60.09 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201020112012201320142015201620172018201920200255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
HIRAI, YOSHIHARU CHIBA, JP 28 190
TAMURA, NORIO CHIBA, JP 16 95

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Patent Citation Ranking

  • 6 Citation Count
  • C09K Class
  • 8.16 % this patent is cited more than
  • 15 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges402838636161071332301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +020406080100120140160180200220240260280300

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