PROTECTIVE FILM FORMING FILM COMPOSITE SHEET FOR FORMING PROTECTIVE FILM AND METHOD OF MANUFACTURING CHIP HAVING PROTECTIVE FILM

• Main Authors: KOMASU YUICHIRO, SATOU MIREI, KOBASHI RIKIYA
• Format: Patent
• Language: English; Korean
• Published: 06.10.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

Provided is a protective film-forming film, as an energy ray-curable protective film-forming film, which contains an acrylic resin (b) having no energy ray-curable group and an inorganic filler (d), wherein the acrylic resin (b) has a weight average molecular weight of 1,100,000 or less and a degree of dispersion of more than 3.0, and a ratio of the total content of components other than the inorganic filler (d) with respect to content of the inorganic filler (d) is 40 mass% or more. 에너지선 경화성 보호막 형성 필름으로서, 상기 보호막 형성 필름은 에너지선 경화성기를 갖지 않는 아크릴 수지(b)와, 무기 충전재(d)를 함유하고, 상기 아크릴 수지(b)의 중량 평균 분자량이 1100000 이하, 분산도가 3.0 초과이며, 상기 보호막 형성 필름에 있어서, 상기 무기 충전재(d)의 함유량에 대한, 상기 무기 충전재(d) 이외의 성분의 합계 함유량의 비율이 40질량％ 이상인, 보호막 형성 필름.