偏振膜及偏振膜的制造方法

By controlling the thickness and distribution of the iodine resin film, and combining water washing and stretching processes, a polarizing film with excellent optical properties and appearance is manufactured, solving the problems of poor appearance and insufficient display characteristics of polarizing films in the prior art, and improving the overall performance of image display devices.

CN116670547BActive Publication Date: 2026-07-17NITTO DENKO CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NITTO DENKO CORP
Filing Date
2021-06-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, thin polarizing films have poor appearance and insufficient display characteristics in image display devices, making it difficult to meet the requirements of thinness and high display performance.

Method used

Polarizing films are manufactured using iodine-containing resin films. By controlling the thickness of the resin film, the distribution of iodine, and the water washing process, the excellent optical properties and appearance of the polarizing film are ensured. Specific methods include washing, stretching, and heating the resin film to form a polarizing film with a specific reflectivity ratio and degree of polarization.

Benefits of technology

A polarizing film with excellent appearance has been achieved, which improves the display characteristics of image display devices, especially in thin-film devices, where it has good reflection control and optical performance.

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Abstract

本发明提供外观优异、可有助于提高图像显示装置的显示特性的偏振膜。本发明实施方式的偏振膜由含碘的树脂膜构成,其厚度为7μm以下,其表面的吸收轴方向的波长400nm的光的反射率Rc400与吸收轴方向的波长680nm的光的反射率Rc680之比(Rc400 / Rc680)超过1。
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