摘要:
Provided is a glass composition for protecting a semiconductor junction which contains at least SiO 2 , B 2 O 3 , Al 2 O 3 , ZnO and at least two oxides of alkaline earth metals selected from a group consisting of CaO, MgO and BaO, and substantially contains none of Pb, As, Sb, Li, Na and K, wherein an average linear expansion coefficient within a temperature range of 50°C to 550°C falls within a range of 3.33×10 -6 to 4.13×10 -6 . A semiconductor device having high breakdown strength can be manufactured using such a glass material containing no lead in the same manner as a conventional case where "a glass material containing lead silicate as a main component" is used.
摘要:
A glass composition for protecting a semiconductor junction is provided, wherein the glass composition for protecting a semiconductor junction contains at least SiO 2 , B 2 O 3 , Al 2 O 3 , ZnO, and at least two oxides of alkaline earth metal selected from a group consisting of CaO, MgO and BaO, and substantially contains none of Pb, P, As, Sb, Li, Na and K. According to the glass composition for protecting a semiconductor junction of the present invention, in the same manner as a conventional case where "a glass material containing lead silicate as a main component" is used, a semiconductor device having a high breakdown voltage can be manufactured by using a glass material containing no lead. Further, according to the glass composition for protecting a semiconductor junction, the glass composition for protecting a semiconductor junction contains at least two oxides of alkaline earth metal selected from a group consisting of CaO, MgO and BaO and hence, an average linear expansion coefficient of the glass composition at a temperature range of 50°C to 550°C becomes close to a linear expansion coefficient of silicon at a temperature range of 50°C to 550°C whereby a semiconductor device of high reliability can be manufactured.
摘要:
A resin-sealed semiconductor device 10 of the present invention includes : a mesa-type semiconductor element 100 which includes a mesa-type semiconductor base body having a pn-junction exposure portion in an outer peripheral tapered region which surrounds a mesa region, and a glass layer which covers at least the outer peripheral tapered region; and a molding resin 40 which seals the mesa-type semiconductor element 100, wherein the mesa-type semiconductor element 100 includes a glass layer which substantially contains no Pb as the glass layer. The resin-sealed semiconductor device of the present invention can acquire higher resistance to a reverse bias at a high temperature than a conventional resin-sealed semiconductor device, although the resin-sealed semiconductor device of the present invention has the structure where the mesa-type semiconductor element is molded with a resin in the same manner as the conventional resin-sealed semiconductor device.
摘要:
Provided is a glass composition for protecting a semiconductor junction which contains at least SiO 2 , Al 2 O 3 , ZnO, CaO and 3 mol% to 10 mol% of B 2 O 3 , and substantially contains none of Pb, P, As, Sb, Li, Na and K. It is preferable that a content of SiO 2 falls within a range of 32 mol% to 48 mol%, a content of Al 2 O 3 falls within a range of 9 mol% to 13 mol%, a content of ZnO falls within a range of 18 mol% to 28 mol%, a content of CaO falls within a range of 15 mol% to 23 mol%, and a content of B 2 O 3 falls within a range of 3 mol% to 10 mol%. According to the glass composition for protecting a semiconductor junction of the present invention, a semiconductor device having a high withstand voltage can be manufactured by using a glass material which contains no lead in the same manner as a conventional case where "a glass material containing lead silicate as a main component" is used.