Title:
ELECTROMAGNETIC WAVE-ABSORBING SHEET
Document Type and Number:
Japanese Patent JP2019176161
Kind Code:
A
Abstract:
To materialize an electromagnetic wave-absorbing sheet which can absorb an electromagnetic wave of a milli-meter wave band or higher frequencies well, which is superior in flexibility and which can be readily disposed in a desired portion.SOLUTION: An electromagnetic wave-absorbing sheet has flexibility and is formed in a sheet-like shape by laminating a resistive film 1, a dielectric layer 2, and an electromagnetic wave-shield layer 3 in turn. The resistive film, the dielectric layer and the electromagnetic wave-shield layer are each translucent, and the whole sheet is translucent. The resistive coating film is formed from a conductive polymer. Its surface resistance value is in a range of -15% to +20% to a vacuum impedance. The electromagnetic wave-shield layer is arranged by a conductive mesh. The aperture rate of the conductive mesh is 35% or more and 85% or less, and the total light transmittance is 30% or more.SELECTED DRAWING: Figure 1
Inventors:
TOYODA MASAYUKI
FUJITA MASAO
FUJITA MASAO
Application Number:
JP2019084459A
Publication Date:
October 10, 2019
Filing Date:
April 25, 2019
Export Citation:
Assignee:
MAXELL HOLDINGS LTD
International Classes:
H05K9/00; B32B3/24; B32B7/025; B32B27/00; H01Q17/00
Domestic Patent References:
| JP2004259910A | 2004-09-16 | |||
| JP2009239211A | 2009-10-15 | |||
| JPH04149267A | 1992-05-22 | |||
| JP2013016670A | 2013-01-24 | |||
| JP2003124011A | 2003-04-25 |
Attorney, Agent or Firm:
Patent business corporation Ikeuchi and Partners