Heat dissipation sheet, method for producing heat dissipation sheet, and laminate

• Main Authors: OOWASHI, KEIGO, ASHIBA, KOUJI, KAWAHARA, YUKO, ZHANG, RUI, MAENAKA, HIROSHI, INUI, OSAMU
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; COMPOUNDS THEREOF; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INORGANIC CHEMISTRY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRINTED CIRCUITS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Provided is a heat dissipation sheet that makes it possible to effectively enhance adhesiveness and long-term insulating reliability. This heat dissipation sheet comprises first inorganic particles having an aspect ratio of 2 or less, second inorganic particles having an aspect ratio greater than 2, and a binder resin. The content of the second inorganic particles is greater than the content of the first inorganic particles in 100 vol% of a 15% thickness region on a first surface side in the thickness direction, and the content of the first inorganic particles in 100 vol% of the 15% thickness region is greater than the content of the first inorganic particles in 100 vol% of a 70% thickness region in the center.