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    • 2. 发明申请
    • OPTICAL STACK COMPRISING ADHESIVE
    • 包含粘合剂的光学堆叠
    • US20140016208A1
    • 2014-01-16
    • US14005912
    • 2012-03-26
    • William F. EdmondsBrandt K. CarterJason S. Petaja
    • William F. EdmondsBrandt K. CarterJason S. Petaja
    • G02B5/04
    • G02B5/045C08L2205/04C09J7/38C09J133/08C09J151/06
    • Presently described are optical stacks comprising a first optical film comprising a plurality of structures comprising an optically active portion designed primarily to provide optical gain and optionally an optically in-active bonding portion disposed on a first surface bonded to a second optical film with a light-transmissive adhesive layer such that a portion of the structures penetrate the adhesive layer and a separation is provided between the adhesive layer and the first surface. In one embodiment, the optical stacks exhibit a combination of high peel strength and high retained brightness, particularly after aging. The adhesive layer preferably comprises an interpenetrating network of the reaction product of a polyacrylate component and a polymerizable monomer and the adhesive layer has an elastic modulus ranging from 100 to 2000 MPa at 25° C.
    • 目前描述的是包括第一光学膜的光学堆叠,该第一光学膜包括多个结构,该多个结构包括主要用于提供光学增益的光学活性部分和可选地设置在与第二光学膜结合的第一表面上的光学活性粘合部分, 透明粘合剂层,使得一部分结构穿透粘合剂层,并且在粘合剂层和第一表面之间提供分离。 在一个实施例中,光学堆叠表现出高剥离强度和高保留亮度的组合,特别是在老化之后。 粘合剂层优选包括聚丙烯酸酯组分和可聚合单体的反应产物的互穿网络,并且粘合剂层在25℃下具有100至2000MPa的弹性模量。
    • 9. 发明申请
    • OPTICAL STACK AND LIGHTGUIDES
    • 光学堆叠和光源
    • US20130022315A1
    • 2013-01-24
    • US13634583
    • 2011-04-11
    • William F. EdmondsTao LiuJohn F. Van Deriofske IIIJohn A. Wheatley
    • William F. EdmondsTao LiuJohn F. Van Deriofske IIIJohn A. Wheatley
    • G02B5/30G02B6/26
    • G02B5/045F21V11/00G02B6/0053G02F1/133606G02F2001/133607Y10T428/24612
    • 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.
    • 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。 穿透底座具有最小穿透基座尺寸。 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。 平均渗透深度与平均最小穿透基础尺寸之比至少为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。