Optical film material, optical film, method for producing polarizer, and polarizer
A technology of optical thin films and manufacturing methods, applied in chemical instruments and methods, optics, polarizing elements, etc., can solve the problems of easy dents and high film prices
Active Publication Date: 2016-09-07
FUJIFILM CORP
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Problems solved by technology
[0007] The above-mentioned acrylic polymer film, cycloolefin polymer film and other films have problems such as high price and easy to produce dents during operation, and there is still room for improvement for practical use
Method used
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[0230] The present invention is further described in detail by enumerating examples below. Materials, reagents, amounts of substances, ratios thereof, operations, and the like shown in the following examples can be appropriately changed without departing from the gist of the present invention. Therefore, the scope of the present invention is not limited to the following examples.
[0231]
[0232] [Formation of Optically Anisotropic Layer]
[0233] The coating liquid prepared according to the formulation of the coating liquid (A) shown in the following Table 1 was coated with a wire bar on stretched PET (thickness 75 μm) manufactured by Fujifilm that had undergone rubbing treatment, and the coating liquid was coated at room temperature After drying for 30 seconds, heat in an atmosphere of 90°C for 2 minutes, and then use a D bulb made by Fusion (lamp 90mW / cm) to irradiate with UV for 6 to 12 seconds at a power of 60%, to produce the thick optically anisotropic layer. It w...
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Abstract
The present invention provides an optical film material comprising a layer formed of a stretched film having a rubbing-treated surface, an optically anisotropic layer, and an optically isotropic an acrylic polymer layer; the above-mentioned optically anisotropic layer is a layer formed by irradiating a polymerizable composition containing a liquid crystal compound directly coated on the above-mentioned surface to polymerize the above-mentioned liquid crystal compound; the above-mentioned acrylic polymer The material layer is a layer formed by curing the polymerizable composition containing (meth)acrylate directly coated on the surface of the layer formed of the above-mentioned polymerizable composition containing a liquid crystal compound, and the above-mentioned acrylic The film thickness of the polymer layer is larger than that of the above-mentioned optically anisotropic layer. The present invention also provides an optical film obtained by peeling a layer formed of a stretched film from the above-mentioned optical film material, a polarizing plate including the above-mentioned optical film, and a production method thereof.
Description
technical field [0001] The invention relates to an optical film material, an optical film, a manufacturing method of a polarizer and a polarizer. Background technique [0002] Due to the expansion of the market for smartphones and tablet PCs, there is an increasing demand for thinner displays. In this trend, as transparent and low-birefringence optical films, in addition to conventionally used cellulose acylate polymer films, various acrylic polymer films and cycloolefin polymer films are being attempted. The film is used as a protective film of a polarizer (for example, Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2009-175222 Contents of the invention [0006] The problem to be solved by the invention [0007] The above-mentioned films such as acrylic polymer films and cycloolefin polymer films have problems such as high price and easy occurrence of dents during handling, and the...
Claims
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IPC IPC(8): G02B5/30B32B27/30G02B1/10G02F1/1335
CPCG02B1/105G02B5/3016B32B27/08B32B27/308B32B2551/00G02B1/14
Inventor 冲和宏香川英章马岛涉
Owner FUJIFILM CORP