发明名称 |
UNIAXIALLY STRETCHED MULTI-LAYER LAMINATE FILM, POLARIZING PLATE COMPRISING SAME, OPTICAL MEMBER FOR LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE |
摘要 |
A uniaxially stretched multi-layer laminate film that exhibits a high polarization performance of 99.5% or more in a simpler configuration than before, a polarizing plate that is composed of the same, an optical member for a liquid crystal display device, and a liquid crystal display device are provided. Namely, in the uniaxially stretched multi-layer laminate film in which a first layer and a second layer are alternately laminated, the uniaxially stretched multi-layer laminate film includes an intermediate layer that has a thickness of 2 µm or more and 30 µm or less; the first layer is composed of a polyester containing a naphthalene dicarboxylic acid ester; the second layer is composed of a copolymer polyester and is an optically isotropic layer that has an average refractive index of 1.50 or more and 1.60 or less; the first layer, the second layer, both first and second layers, or the intermediate layer contains a visible light absorbent, which has a weight loss of less than 10% when it is kept at 300°C for 1 hour, in an amount of 200 ppm or more and 2500 ppm or less on the basis of the weight of the layer; the uniaxially stretched multi-layer laminate film has a polarization degree of 99.5 or more; and the average transmittance Ts for S-polarized light in a wavelength range of 400 nm to 800 nm is 60% or more. |
申请公布号 |
EP2899575(A4) |
申请公布日期 |
2015.12.09 |
申请号 |
EP20130838328 |
申请日期 |
2013.09.20 |
申请人 |
TEIJIN LIMITED |
发明人 |
OYA, TARO;TANABU, KANA;NAKAHIRO, TAKASHI;YOSHIDA, TETSUO;SHIROMA, HIROMI;SHIMIZU, TOMOKO |
分类号 |
G02B5/30;B32B7/02;B32B27/18;B32B27/36;C08G63/187;C08G63/199;G02F1/1335 |
主分类号 |
G02B5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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