光学膜、偏振片和液晶显示装置

Optical film, polaroid, and liquid crystal display apparatus

Abstract

Provided is an optical film, which is capable of fully keeping close cooperation between the active energy radial solidifying layer and the acylation cellulose membrane even exposed to sunlight for a long while. Even as polaroid protective film assembled to Polaroid and used for a long time at a high temperature, the optical film can still keep excellent polarization performance. Moreover, the thickness of the optical film is reduced. In addition, the invention also provides a polaroid and a liquid crystal display apparatus employing the optical film. The optical film of the invention is provided with an acylation cellulose membrane and an active energy radial solidifying layer. The acylation cellulose membrane comprises at least one plasticizer selected from the group consisting of a carbohydrate ramification, polyol ester, and contracting polyester. Moreover, the active energy radial solidifying layer comprises hindered amine compound.
本发明的目的在于提供一种光学膜,其即使在长时间地光照射的情况下仍可充分地维持活性能量射线固化层与酰化纤维素膜之间的密合,其即使在作为偏振片保护膜而组装在偏振片中于高温高湿条件下长时间地使用的情况下仍可维持良好的偏振性能,而且其厚度减小。另外,本发明提供使用了该光学膜的偏振片和液晶显示装置。本发明的光学膜具有酰化纤维素膜和活性能量射线固化层,所述酰化纤维素膜包含从碳水化合物衍生物、多元醇酯和缩聚酯中选择的至少1种增塑剂,并且所述活性能量射线固化层包含受阻胺类化合物。

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-105849601-AAugust 10, 2016住友化学株式会社偏振器以及具有该偏振器的偏振板和偏振性层叠膜