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2. 发明申请

WO2011130151A1 OPTICAL STACK AND LIGHTGUIDES 审中-公开
标题翻译：光学堆叠和光源
公开(公告)号：WO2011130151A1
公开(公告)日：2011-10-20
申请号：PCT/US2011/031904
申请日：2011-04-11
申请人： 3M INNOVATIVE PROPERTIES COMPANY , EDMONDS, William F., , LIU, Tao, , VAN DERLOFSKE, John F. III, , WHEATLEY, John A.,
发明人： EDMONDS, William F., , LIU, Tao, , VAN DERLOFSKE, John F. III, , WHEATLEY, John A.,
IPC分类号： G02B5/04 , G02F1/13357 , G02B6/00
CPC分类号： G02B5/045 , F21V11/00 , G02B6/0053 , G02F1/133606 , G02F2001/133607 , Y10T428/24612
摘要： Optical stack is disclosed. The optical stack includes a first optical stack that includes, a first optical adhesive layer, and a reflective polarizer layer that is disposed on the first optical adhesive layer. The reflective polarizer layer substantially reflects light of a first polarization state and substantially transmits light of a second polarization state orthogonal to the first polarization state. The optical stack also includes a second optical stack that includes a second optical adhesive layer, a low index layer that is disposed on the second optical adhesive layer and includes a plurality of voids dispersed in a binder, and a light directing film that is disposed on the low index layer and includes a plurality of unitary discrete structures. Portions of each unitary discrete structure penetrate into the first optical adhesive layer. Portions of each unitary discrete structure do not penetrate into the first optical adhesive layer. Each unitary discrete structure defines a penetration depth and a penetration base at the interface between the penetrating and non-penetrating portions of the unitary discrete structure. The penetration base has a minimum penetration base dimension. The plurality of unitary discrete structures has an average penetration depth and an average minimum penetration base dimension. The ratio of the average penetration depth to the average minimum penetration base dimension is at least 1.5. The peel strength between the first and second optical stacks is greater than about 30 grams/inch.
摘要翻译：公开了光堆叠。光学堆叠包括第一光学堆叠，其包括第一光学粘合剂层和设置在第一光学粘合剂层上的反射偏振器层。反射型偏振层基本上反射第一偏振态的光，并且基本上透射与第一偏振状态正交的第二偏振状态的光。光学堆叠还包括第二光学堆叠，其包括第二光学粘合剂层，设置在第二光学粘合剂层上并包括分散在粘合剂中的多个空隙的低折射率层，以及设置在低折射率层并且包括多个单一的离散结构。每个单一离散结构的部分渗入第一光学粘合剂层。每个单一离散结构的部分不会渗透到第一光学粘合剂层中。每个单一离散结构在整体离散结构的穿透部分和非穿透部分之间的界面处限定穿透深度和穿透基部。穿透基座具有最小的穿透基座尺寸。多个单一离散结构具有平均穿透深度和平均最小穿透基础尺寸。平均穿透深度与平均最小穿透基础尺寸的比值至少为1.5。第一和第二光学叠层之间的剥离强度大于约30克/英寸。

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