US 12,408,268 B2
Organic insulator and wiring board
Chie Chikara, Kyotanabe (JP); Tadashi Nagasawa, Kirishima (JP); Satoshi Yoshiura, Kyotanabe (JP); Satoshi Kajita, Ikoma (JP); and Kouji Fujikawa, Kyotanabe (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 17/927,479
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed May 24, 2021, PCT No. PCT/JP2021/019496
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/241469, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-092426 (JP), filed on May 27, 2020.
Prior Publication US 2023/0209708 A1, Jun. 29, 2023
Int. Cl. H05K 1/03 (2006.01); H05K 1/02 (2006.01)
CPC H05K 1/0373 (2013.01) [H05K 1/0256 (2013.01); H05K 2201/0158 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An organic insulator comprising a cured resin product:
containing a cyclic olefin copolymer as a main component; and
having a cumulative luminescence amount of 3.7×105 cpm or less measured by chemiluminescence measurement method.