公开(公告)号：US20050249944A1

公开(公告)日：2005-11-10

申请号：US10838841

申请日：2004-05-04

申请人： Yongcai Wang ,  Janglin Chen ,  Charles Anderson ,  Timothy Hubert ,  Timothy Schunk ,  Richard Castle

发明人： Yongcai Wang ,  Janglin Chen ,  Charles Anderson ,  Timothy Hubert ,  Timothy Schunk ,  Richard Castle

IPC分类号： G02B1/10 ,  G02B5/30 ,  B32B27/32 ,  B32B27/30 ,  B32B27/36

CPC分类号： G02B1/14 ,  G02B1/105 ,  G02B1/16 ,  G02B5/305 ,  Y10T156/1089 ,  Y10T156/1092 ,  Y10T156/1097 ,  Y10T428/269 ,  Y10T428/31507 ,  Y10T428/31855 ,  Y10T428/31935 ,  Y10T428/31938 ,  Y10T428/31971

摘要： The invention generally relates to polymer films used as protective cover sheets for polarizer plates, a method for producing polarizing plates, and a Liquid Crystal Display employing the same. More particularly, the invention relates to a cover sheet composite having a removable, carrier substrate and a cover sheet comprising a low birefringence polymer film and a layer that promotes adhesion to polyvinyl alcohol on the same side of the carrier substrate as the low birefringence polymer film. The guarded cover sheet of the invention is less susceptible to defects due to dirt and abrasion during the manufacture of the cover sheet and polarizer plates. In addition, the cover sheet has excellent adhesion to polyvinyl alcohol-containing dichroic films and eliminates the need to alkali treat the cover sheet prior to lamination to the dichroic films.

摘要翻译： 本发明一般涉及用作偏振片的保护性覆盖片的聚合物膜，偏振片的制造方法以及使用其的液晶显示装置。 更具体地说，本发明涉及一种具有可移除的载体基材和覆盖片的覆盖片复合材料，该覆盖片材包括低双折射聚合物膜和促进与聚乙烯醇粘附在与载体基底相同的侧面上的低折射率聚合物膜 。 本发明的被保护的覆盖片在覆盖片和偏振片的制造期间由于污垢和磨损而不易受到缺陷的影响。 此外，覆盖片对具有聚乙烯醇的二向色膜具有优异的粘合性，并且在层压到二向色膜之前不需要对封面进行碱处理。