公开(公告)号：US20220220265A1

公开(公告)日：2022-07-14

申请号：US17604102

申请日：2020-04-16

Applicant: NITTO DENKO CORPORATION

Inventor： Shunji IMAMURA ,  Shimpei YAKUWA ,  Kou UEMURA

IPC: C08J5/18 ,  C08K3/36 ,  C08J5/00

Abstract: Provided is a plate-shaped composite material which can sufficiently exhibit an interference effect between antenna elements when utilized as, for example, a substrate of a microstrip patch antenna. The interference effect between the antenna elements can be sufficiently exhibited by controlling the composite material so that, when the material is divided into a plurality of regions, a standard deviation of density values of the respective regions is kept at a certain value or less.

公开(公告)号：US20250110265A1

公开(公告)日：2025-04-03

申请号：US18730130

申请日：2023-01-13

Applicant: Nitto Denko Corporation

Inventor： Naoki NAGAOKA ,  Daiki KATO ,  Shimpei YAKUWA ,  Shunji IMAMURA

IPC: G02B5/08

Abstract: Provided is a reflector having reflection characteristics of a broad frequency band. The reflector includes: a dielectric layer; a conductive layer that is provided on a first surface of the dielectric layer and includes a periodical arrangement of a plurality of conductor patterns; and a ground layer that is provided on a second surface opposite to the first surface. The conductive layer is configured to reflect incident waves at an angle having a size different from that of an incident angle of the incident waves. The dielectric layer has a relative dielectric constant of 2.0 or less.

公开(公告)号：US20250018684A1

公开(公告)日：2025-01-16

申请号：US18687541

申请日：2022-08-31

Applicant: NITTO DENKO CORPORATION

Inventor： Kyoko ISHII ,  Yosuke SUGAYA ,  Takeo INOUE ,  Tomohiro KONTANI ,  Shimpei YAKUWA ,  Shunji IMAMURA

IPC: B32B17/10 ,  B32B3/26 ,  B32B5/02 ,  B32B5/16 ,  B32B5/18 ,  B32B17/06 ,  B32B27/06 ,  B32B27/08 ,  B32B27/12 ,  B32B27/14 ,  B32B27/28 ,  B32B27/32 ,  H01L23/10

Abstract: A cover member suitable for suppressing damage to a semiconductor device package includes: a cover sheet having a shape configured to cover an object in a state of being placed on a placement face; and an adhesive layer joined to the cover sheet and configured to fix the cover member to the placement face. The adhesive layer includes a double-sided adhesive sheet. The double-sided adhesive sheet has a structure in which a first adhesive agent layer, a substrate, and a second adhesive agent layer are laminated in this order. The substrate has a porous structure. The substrate has a porosity of 30% or more. When the porosity of the substrate is 30% or more and 50% or less, the substrate has an average pore diameter of 10 μm or more, and when the porosity of the substrate is more than 50%, the average pore diameter is 0.05 μm or more.