| 发明名称 |
MATHOD FOR PRODUCING RETARDATION FILM |
| 摘要 |
<p>A method for manufacturing a phase difference plate is provided to manufacture a wide phase difference plate which satisfies the R_450 <R_550<R_650 or 0<(n_x-n_z)/(n_x-n_y)<1, conveniently and precisely. A method for manufacturing a phase difference plate comprises the following steps of: co-extruding or simultaneously casting the thermoplastic resin A and thermoplastic resin b; obtaining a laminated film which includes a layer of the thermoplastic resin A and a layer of the thermoplastic resin B; uniaxially stretching the laminated film two times; and approximately making the molecular orientation axis of the thermoplastic resin A layer perpendicularly cross the molecular orientation axis of the thermoplastic resin B layer.</p> |
| 申请公布号 |
KR20090088322(A) |
申请公布日期 |
2009.08.19 |
| 申请号 |
KR20090011464 |
申请日期 |
2009.02.12 |
| 申请人 |
ZEON CORPORATION |
发明人 |
HATANO TAKU;ARAKAWA KOHEI;YAMANAKA SHUNSUKE |
| 分类号 |
B29C47/06;B29C55/04;B29C55/08 |
主分类号 |
B29C47/06 |
| 代理机构 |
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代理人 |
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