Title:
ELECTROMAGNETIC INTERFERENCE ABSORBER, DIELECTRIC LAYER AND COMPOSITION FOR DIELECTRIC LAYERS
Document Type and Number:
WIPO Patent Application WO/2024/042787
Kind Code:
A1
Abstract:
This electromagnetic interference absorber comprises a dielectric layer that contains a high-loss material and a resin in which a low dielectric material is dispersed, and an electromagnetic wave reflection layer; and the dielectric layer has a relative dielectric constant of 15 or less, a relative magnetic permeability of 1 or less, a dielectric loss tangent of 0.1 or less and a magnetic loss tangent of 2 or less. It is preferable that the content of the high-loss material in the dielectric layer is 10% by volume to 40% by volume, and that the content of the low dielectric material in the dielectric layer is 10% by volume to 40% by volume.
Inventors:
AKAMA HIROSHI (JP)
HIRATA KOJI (JP)
KANEHIRA HIROKI (JP)
HIRATA KOJI (JP)
KANEHIRA HIROKI (JP)
Application Number:
PCT/JP2023/017782
Publication Date:
February 29, 2024
Filing Date:
May 11, 2023
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
H05K9/00; B32B7/025; B32B27/18; C08J5/18; C08K3/08; C08K3/36; C08K7/24; C08L101/00; H01Q17/00
Domestic Patent References:
| WO2004067631A1 | 2004-08-12 |
Foreign References:
| JP2018098367A | 2018-06-21 | |||
| JP2016111305A | 2016-06-20 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Download PDF:
Previous Patent: SHEET-EQUIPPED PILLOW AND SHEET
Next Patent: POWER TRANSMISSION LINE MONITORING DEVICE, DRIVING TOOL, AND INSPECTION METHOD
Next Patent: POWER TRANSMISSION LINE MONITORING DEVICE, DRIVING TOOL, AND INSPECTION METHOD