发明名称 |
Optical film, manufacturing method of optical film, optical compensating film, manufacturing method of optical compensating film, polarizing plate, and liquid crystal display |
摘要 |
An object is to provide an optical film in which retardation variation is less even after a long period of duration of use, to provide an optical compensating film in which transparency and flatness are not deteriorated in a stretching process by using the foregoing film as a support, and to provide a polarizing plate and a liquid crystal display exhibiting reduced visibility variation caused by heat generation of an optical LED backlight, and excellent color reproducibility. Disclosed is a manufacturing method of an optical film formed by melt-casting a composition containing a cellulose resin and a plasticizer, wherein the cellulose resin has a residual sulfuric acid content of 0.1-50 ppm, and the composition contains a polymer having a weight average molecular weight of 500-30000 prepared via polymerization of ethylenic unsaturated monomers, or an acrylic polymer having a weight average molecular weight of 500-30000.
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申请公布号 |
US7815823(B2) |
申请公布日期 |
2010.10.19 |
申请号 |
US20060367674 |
申请日期 |
2006.03.06 |
申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
MURAKAMI TAKASHI;SHIMIZU KUNIO |
分类号 |
B29D11/00 |
主分类号 |
B29D11/00 |
代理机构 |
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