Title:
HIGH-FREQUENCY DIFFUSION SHEET
Document Type and Number:
WIPO Patent Application WO/2024/070982
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a high-frequency diffusion sheet which can facilitate increase in opportunities of receiving electromagnetic waves in a high-frequency region by a communication device in a building, by reflecting and diffusing the electromagnetic waves in the high-frequency region. A high-frequency diffusion sheet 10 according to the present invention is used for diffusing electromagnetic waves in a high-frequency region, and is formed from a laminate having an electromagnetic wave shielding layer 11 which exhibits an electromagnetic wave shielding property and an electromagnetic reflection layer 13 which is layered on the electromagnetic wave shielding layer 11 and which exhibits an electromagnetic reflection property. The electromagnetic wave shielding layer 11 is patterned in a plan view of the laminate, and has openings 15 passing through the electromagnetic wave shielding layer 11 in the thickness direction thereof.
Inventors:
WATANABE TOSHIAKI (JP)
HOSOMI TAKESHI (JP)
NUMAYAMA MIZUKI (JP)
HOSOMI TAKESHI (JP)
NUMAYAMA MIZUKI (JP)
Application Number:
PCT/JP2023/034590
Publication Date:
April 04, 2024
Filing Date:
September 22, 2023
Export Citation:
Assignee:
SUMITOMO BAKELITE CO (JP)
International Classes:
H05K9/00; H01Q15/23
Foreign References:
| JP2021166287A | 2021-10-14 | |||
| JP2022535247A | 2022-08-05 | |||
| JPS5257547U | 1977-04-26 | |||
| JP2010080825A | 2010-04-08 |
Attorney, Agent or Firm:
FUJITANI, Yasuyuki et al. (JP)
Download PDF:
Previous Patent: BIAXIALLY STRETCHED POLYPROPYLENE FILM, PACKAGE FOR FOOD, AND FOOD PACKAGE
Next Patent: MEDICAL DEVICE
Next Patent: MEDICAL DEVICE