公开(公告)号：EP2140293A4

公开(公告)日：2014-04-30

申请号：EP08799811

申请日：2008-03-27

申请人： 3M INNOVATIVE PROPERTIES CO

发明人： HEBRINK TIMOTHY J ,  JONZA JAMES M ,  BAY RANDY S ,  CLARKE GRAHAM M ,  LUCKING RAYMOND L ,  YU TA-HUA ,  COLLIER TERRY O

IPC分类号： G02B5/30 ,  B29D11/00

CPC分类号： B29D11/00798 ,  B33Y80/00 ,  Y10T428/1036

摘要： Disclosed herein is an optical article having a top layer with a structured surface that collimates light, a core layer secured to the top layer opposite the structured surface, and a bottom layer secured to the core layer opposite the top layer. Either the top layer or the core layer includes a first extrudable polymer having a flexural modulus of greater than 2.5 GPa, and the other layer includes a second extrudable polymer having a flexural modulus of 2.5 GPa or less, an impact strength of greater than about 40 J/m, and tensile elongation at break of greater than about 5%. The bottom layer includes a third extrudable polymer. The bottom layer of the optical article may be structured to diffuse light. One or two optical articles may be secured to an optical film such as a polarizer film. Methods and display devices are also disclosed herein.

摘要翻译： 本文公开了一种光学制品，其具有顶层，其具有准直光的结构化表面，固定到与结构化表面相对的顶层的芯层，以及固定到与顶层相对的芯层的底层。 顶层或芯层包括具有大于2.5GPa的挠曲模量的第一可挤出聚合物，另一层包括弯曲模量为2.5GPa或更小的第二可挤出聚合物，冲击强度大于约40GPa J / m，断裂伸长率大于约5％。 底层包括第三可挤出聚合物。 光学制品的底层可以被构造为漫射光。 一个或两个光学制品可以固定到诸如偏振片的光学膜。 本文还公开了方法和显示装置。

公开(公告)号：EP2576181A4

公开(公告)日：2015-07-22

申请号：EP10852305

申请日：2010-05-27

申请人： 3M INNOVATIVE PROPERTIES CO

发明人： BAY RANDY S ,  PETT TODD G ,  HANSEN BRENT R

IPC分类号： B29C47/92 ,  B29C41/26 ,  B29C41/52 ,  B29C47/02

CPC分类号： B29C43/28 ,  B29C47/0021 ,  B29C47/025 ,  B29C47/522 ,  B29C47/92 ,  B29C2947/9259 ,  B29C2947/92923 ,  B29K2995/0018 ,  B32B37/0007 ,  B32B37/0053 ,  B32B37/153 ,  B32B2309/14

摘要： It has now been determined that an internal optical defect can be eliminated by controlling the relative speed mismatch between the resilient roll and the casting roll in a film extrusion coating process. In particular, slowing down the surface speed of the resilient roll relative to the casting roll when coating a biaxially orientated film was found to remove the optical defect. Conversely, speeding up the surface speed of the resilient roll relative to the casting roll when coating a uniaxially orientated film was found to remove the optical defect.