Title:
THERMOPLASTIC LIQUID CRYSTAL POLYMER FILM AND CIRCUIT BOARD USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/095988
Kind Code:
A1
Abstract:
The present invention provides a thermoplastic liquid crystal polymer film that has a dielectric constant in the thickness direction, which is suitable for millimeter wave radar base materials. This thermoplastic liquid crystal polymer film is formed from a thermoplastic polymer that is capable of forming an optically anisotropic melt phase (hereinafter referred to as a thermoplastic liquid crystal polymer), and is characterized in that: the dielectric constant thereof in the thickness direction at 23°C at 20 GHz is 2.5-3.2; and the heat distortion temperature thereof is 180-320°C. This thermoplastic liquid crystal polymer film may have a dielectric constant at 23°C at 15 GHz of 2.6-3.7 both in one direction in the film plane and in another direction that is perpendicular to the one direction.
Inventors:
ONODERA MINORU (JP)
SUNAMOTO TATSUYA (JP)
TAKAHASHI TAKESHI (JP)
NAKASHIMA TAKAHIRO (JP)
SUNAMOTO TATSUYA (JP)
TAKAHASHI TAKESHI (JP)
NAKASHIMA TAKAHIRO (JP)
Application Number:
PCT/JP2019/043658
Publication Date:
May 14, 2020
Filing Date:
November 07, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B32B27/06; B32B7/025; B32B7/027; B32B15/08; C08J5/18; H05K1/03
Domestic Patent References:
| WO2013146174A1 | 2013-10-03 | |||
| WO2013065453A1 | 2013-05-10 |
Foreign References:
| JPH0890570A | 1996-04-09 | |||
| JP2005103989A | 2005-04-21 | |||
| JP2001088219A | 2001-04-03 | |||
| JP2010000795A | 2010-01-07 | |||
| JP2005105165A | 2005-04-21 | |||
| JP2001081215A | 2001-03-27 | |||
| JP2012077117A | 2012-04-19 | |||
| JP2018109090A | 2018-07-12 | |||
| JP2010229200A | 2010-10-14 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Download PDF: