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    Method for preparing structured adhesive articles
    61.
    发明授权
    Method for preparing structured adhesive articles 有权

    公开(公告)号：US10723919B2

    公开(公告)日：2020-07-28

    申请号：US16139567

    申请日：2018-09-24

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Michael Benton Free

    IPC: C09J7/40 ,  B32B37/00 ,  B32B37/02 ,  B32B38/06 ,  B32B38/10 ,  C09J7/20 ,  B29C37/00 ,  B29C51/14 ,  C09J7/38 ,  B29K105/00 ,  B29L7/00 ,  C09J133/00

    Abstract: Methods of forming laminating adhesive articles include providing a multi-layer article, and a tool with a structured surface. The multi-layer articles include a substrate, an adhesive layer, and a liner. The multi-layer article is placed between the structured surface of the tool and a support surface that is hard and the tool is embossed against the liner by applying pressure or pressure/heat. The embossing causes the tool structures to distort the liner and the adhesive layer, and causes permanent topological changes in a portion of the adhesive layer, but does not distort the substrate. The distortion in the liner is retained upon release of the applied pressure. The portions of topologically changed adhesive can form convex structures that are permanent. Upon removal of the liner from the adhesive layer, the concave structures on the adhesive layer are unstable, but the convex structures are stable.

    Nanostructures for color-by-white OLED devices
    63.
    发明授权
    Nanostructures for color-by-white OLED devices 有权

    公开(公告)号：US10475858B2

    公开(公告)日：2019-11-12

    申请号：US16002426

    申请日：2018-06-07

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Martin B. Wolk ,  Seong Taek Lee ,  Michael Benton Free ,  Nicholas C. Erickson

    IPC: H01L51/52 ,  H01L27/32 ,  G02B5/20 ,  G02B5/02

    Abstract: The present disclosure describes nanostructured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.

    ARTICLE WITH MICROSTRUCTURED LAYER
    67.
    发明申请
    ARTICLE WITH MICROSTRUCTURED LAYER 审中-公开

    公开(公告)号：US20190016086A1

    公开(公告)日：2019-01-17

    申请号：US16066943

    申请日：2016-12-22

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jeffrey L. Solomon ,  Michael Benton Free ,  Steven J. McMan ,  Martin B. Wolk ,  Elisa M. Cross

    IPC: B32B3/30 ,  B32B7/12 ,  B32B27/36 ,  B32B27/08 ,  B32B37/14

    Abstract: Article comprising a first, microstructured layer comprising a first material, and having first and second opposed major surfaces, the first major surface being a microstructured surface, and the microstructured surface having peaks and valleys, wherein the peaks are microstructural features each having a height defined by the distance between the peak of the respective microstructural feature and an adjacent valley; and a second layer comprising at least one of a crosslinkable or crosslinked composition, wherein at least a portion of the second major surface of the second layer is directly attached to at least a portion of the first major surface of the first, microstructured layer. Articles described herein are useful, for example, for optical film applications. For example. An article including a regular prismatic microstructured pattern can act as a totally internal reflecting film for use as a brightness enchancement film; an article including a corner-cube prismatic microstructured pattern can act as a retroreflecting film or element for use as reflecting film when combined with a back reflector; and an article including a prismatic microstructured pattern can act as an optical turning film or element for use in an optical display.

    Patterned marking of multilayer optical film by thermal conduction
    69.
    发明授权
    Patterned marking of multilayer optical film by thermal conduction 有权

    公开(公告)号：US09864120B2

    公开(公告)日：2018-01-09

    申请号：US14916819

    申请日：2014-09-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Michael Benton Free ,  Martin B. Wolk ,  Rolf W. Biernath ,  Stephen A. Johnson ,  William W. Merrill ,  William F. Edmonds ,  Claire A. Jalbert

    IPC: G02B5/30 ,  G02B5/08 ,  G02B5/28

    CPC classification number: G02B5/3083 ,  G02B5/0841 ,  G02B5/285 ,  G02B5/305

    Abstract: A multilayer optical film (130) has a packet of microlayers that selectively reflect light by constructive or destructive interference to provide a first reflective characteristic. At least some of the microlayers are birefringent. A stabilizing layer attaches to and covers the microlayer packet proximate an outer exposed surface of the film Heating elements (122) can physically contact the film to deliver heat to the packet through the stabilizing layer by thermal conduction, at altered regions of the film, such that the first reflective characteristic changes to an altered reflective characteristic in the altered regions to pattern the film The stabilizing layer provides sufficient heat conduction to allow heat from the heating elements to change (e.g. reduce) the birefringence of the birefringent microlayers disposed near the outer exposed surface in the altered regions, while providing sufficient mechanical support to avoid substantial layer distortion of the microlayers near the outer exposed surface in the altered regions.

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