A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
INSULATING SUBSTRATE HAVING THROUGH-HOLES
It is provided an insulating substrate including through holes for conductors arranged in the insulating substrate. A thickness of the insulating substrate is 25 to 100 µ m, and a diameter of the through hole is 20 to 100 µ m. The insulating substrate includes a main body part and exposed regions exposed to the through holes and is composed an alumina sintered body. A relative density of the alumina sintered body is 99.5 percent or higher. The alumina sintered body has a purity of 99.9 percent or higher, and has an average grain size of 3 to 6 µ m in said main body part. Alumina grains are plate-shaped in the exposed region and the plate-shaped alumina grains have an average length of 8 to 25 µ m.
INSULATING SUBSTRATE HAVING THROUGH-HOLES
It is provided an insulating substrate including through holes for conductors arranged in the insulating substrate. A thickness of the insulating substrate is 25 to 100 µ m, and a diameter of the through hole is 20 to 100 µ m. The insulating substrate includes a main body part and exposed regions exposed to the through holes and is composed an alumina sintered body. A relative density of the alumina sintered body is 99.5 percent or higher. The alumina sintered body has a purity of 99.9 percent or higher, and has an average grain size of 3 to 6 µ m in said main body part. Alumina grains are plate-shaped in the exposed region and the plate-shaped alumina grains have an average length of 8 to 25 µ m.
INSULATING SUBSTRATE HAVING THROUGH-HOLES
ISOLIERENDES SUBSTRAT MIT BOHRUNGSLÖCHER
SUBSTRAT ISOLANT POSSÉDANT DES TROUS DÉBOUCHANTS
TAKAGAKI TATSURO (author) / IWASAKI YASUNORI (author) / MIYAZAWA SUGIO (author) / IDE AKIYOSHI (author) / NAKANISHI HIROKAZU (author)
2018-11-28
Patent
Electronic Resource
English