Title:
IMPEDANCE MATCHING FILM AND RADIO WAVE ABSORBER
Document Type and Number:
WIPO Patent Application WO/2021/199920
Kind Code:
A1
Abstract:
An impedance matching film 10a has a plurality of openings 11. The plurality of openings 11 are formed at regular intervals in a specific direction along a main surface 10f of the impedance matching film 10a. The impedance matching film 10a has a sheet resistance of 300-700 Ω/□. The size G of each opening 11 in the specific direction is 50-1000 μm. The impedance matching film 10a has a cross-sectional resistance RS of greater than or equal to 1M Ω/m. A cross-sectional resistance RS is determined by dividing the specific resistance of the material of the impedance matching film 10a by the product of the thickness of the impedance matching film 10a and the distance between two nearest-neighbor openings 11.
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Inventors:
TANAKA HIROKAZU (JP)
NAKANISHI YOSUKE (JP)
SHIBAHARA SHO (JP)
MACHINAGA HIRONOBU (JP)
NAKANISHI YOSUKE (JP)
SHIBAHARA SHO (JP)
MACHINAGA HIRONOBU (JP)
Application Number:
PCT/JP2021/008820
Publication Date:
October 07, 2021
Filing Date:
March 05, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
H01Q17/00; B32B7/025; H05K9/00
Domestic Patent References:
| WO2010136393A2 | 2010-12-02 |
Foreign References:
| JP2010010420A | 2010-01-14 | |||
| JP2002076672A | 2002-03-15 | |||
| JP2004140194A | 2004-05-13 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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