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    Optical stack including multilayer optical film and radio-wave anti-reflection sheet
    11.
    发明授权
    Optical stack including multilayer optical film and radio-wave anti-reflection sheet 有权

    公开(公告)号：US12147066B2

    公开(公告)日：2024-11-19

    申请号：US18567823

    申请日：2021-06-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Fan Long ,  Bharat R. Acharya ,  Jaewon Kim ,  Jingfei Chen ,  Huijie Xie ,  Zhe Hu

    IPC: G02B5/26 ,  G01S7/03 ,  G01S13/931 ,  G02B1/04 ,  G02B5/20 ,  G02B5/30 ,  H01Q1/42

    Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHZ wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHZ and about 120 GHZ, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than −10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

    Patterned Article Including Metallic Bodies
    13.
    发明公开
    Patterned Article Including Metallic Bodies 审中-公开

    公开(公告)号：US20240235055A1

    公开(公告)日：2024-07-11

    申请号：US18059151

    申请日：2021-06-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Raymond P. Johnston ,  John J. Sullivan ,  Matthew C. Messina ,  Charles D. Hoyle ,  Jaewon Kim ,  Haiyan Zhang ,  Kevin W. Gotrik ,  Douglas S. Dunn

    IPC: H01Q21/00 ,  H01Q21/06

    CPC classification number: H01Q21/0093 ,  H01Q21/061

    Abstract: A patterned article includes a polymeric layer having opposing first and second major surfaces and defining a plurality of through openings therein. For each through opening in at least a sub-plurality of the through openings, a metallic body is disposed in the through opening. The metallic body has a first outermost surface, an opposite second outermost surface and at least one lateral sidewall extending therebetween. The first outermost surface of the metallic body is substantially flush with the first major surface of the polymeric layer. Each lateral sidewall extends from the first outermost surface of the metallic body toward or to, but not past, the second major surface of the polymeric layer. The metallic body is substantially coextensive with the through opening in at least one cross-section parallel to the polymeric layer. The metallic bodies can be electrically isolated from one another.

    THERMALLY CONDUCTIVE ELECTROMAGNETICALLY ABSORPTIVE MATERIAL
    16.
    发明申请
    THERMALLY CONDUCTIVE ELECTROMAGNETICALLY ABSORPTIVE MATERIAL 有权

    公开(公告)号：US20230119856A1

    公开(公告)日：2023-04-20

    申请号：US17910543

    申请日：2021-03-23

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Zhonghua Lu ,  Badri Veeraraghavan ,  Joel S. Peiffer ,  Jeffrey A. Tostenrude ,  Jaewon Kim ,  Zulfiqar A. Khan ,  Jennifer J. Sokol

    IPC: H05K9/00 ,  H01Q1/52 ,  H01Q1/02

    Abstract: A thermally conductive electromagnetically absorbing material includes a plurality of particles dispersed in a binder. The plurality of particles can have a particle size distribution having at least three peaks, where at least a majority of particles within a half width at half maximum of one, but not the other ones, of the at least three peaks are at least partially coated with an electromagnetically absorbing coating. The plurality of particles can include pluralities of first and second particles where a total number of the first particles is at most 1% of a total number of the first and second particles and where the first particles are more electromagnetically absorbing than the second particles. Films, molded articles and systems including the thermally conductive electromagnetically absorbing material are described.

    FILM INCLUDING POLYMERIC ELEMENTS INTERCONNECTING PARTICLES
    18.
    发明申请
    FILM INCLUDING POLYMERIC ELEMENTS INTERCONNECTING PARTICLES 有权

    公开(公告)号：US20220203661A1

    公开(公告)日：2022-06-30

    申请号：US17606538

    申请日：2020-05-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Bharat R. Acharya ,  Derek J. Dehn ,  Bradley L. Givot ,  Jaewon Kim ,  Yong K. Wu

    IPC: B32B27/18 ,  B32B27/08 ,  C08J5/18 ,  B32B7/12 ,  B32B5/12 ,  B32B5/16

    Abstract: A film includes a polymeric material and a plurality of particles dispersed therein. The polymeric material includes a plurality of elongate polymeric elements oriented along substantially a same first direction and interconnecting the particles. An elongate end portion of at least a first elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a first particle in the plurality of particles along an entire length of the elongate end portion. An elongate mid portion of at least a second elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a second particle in the plurality of particles along an entire length of the elongate mid portion with the second elongate polymeric element extending away from the second particle from opposite ends of the elongate mid portion. Multilayer films and processes are also described.

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