发明名称 |
WAVE PLATE, METHOD FOR PRODUCING SAME, AND LIQUID CRYSTAL DISPLAY DEVICE |
摘要 |
A phase difference plate is manufactured by a method including a step of forming a multilayer body by co-extruding or co-casting a resin A having a positive intrinsic birefringence value and a resin B having a negative intrinsic birefringence value, the multilayer body including a layer “a” containing the resin A and a layer “b” containing the resin B; a step of stretching the multilayer body at a temperature T1 in one direction; and a step of subsequently stretching the multilayer body at temperature T2 lower than the temperature T1 in a direction that is approximately orthogonal to the previous stretching direction. The resulting phase difference plate has specific in-plane retardation Rea of the layer “a”, retardation Rta in the thickness direction thereof, in-plane retardation Reb of the layer “b”, and retardation Rtb in the thickness direction thereof. |
申请公布号 |
KR20120041219(A) |
申请公布日期 |
2012.04.30 |
申请号 |
KR20127003599 |
申请日期 |
2010.07.28 |
申请人 |
ZEON CORPORATION |
发明人 |
HATANO TAKU;HARAI KENICHI |
分类号 |
G02B5/30;B29C55/14;G02F1/13363 |
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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