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    • 1. 发明授权
    • Method of fabricating a semiconductor device
    • 制造半导体器件的方法
    • US4219373A
    • 1980-08-26
    • US1163
    • 1979-01-05
    • Yasuhiro MochizukiHiroaki HachinoYutaka MisawaYoko Wakui
    • Yasuhiro MochizukiHiroaki HachinoYutaka MisawaYoko Wakui
    • H01L21/225H01L21/332H01L21/761
    • H01L29/66393H01L21/2254H01L21/761Y10S438/92
    • A method of fabricating a semiconductor device of the type wherein aluminium layers are selectively deposited on the major surface of a silicon semiconductor substrate and thereafter aluminium is selectively diffused into the silicon semiconductor substrate by means of heat treatment in an atmosphere including an oxygen gas. Recesses are selectively formed in at least one major surface of the silicon semiconductor substrate, aluminium is deposited onto the recesses, and the silicon semiconductor substrate is then subjected to a heat treatment to selectively diffuse the aluminium into the silicon semiconductor substrate. Layers of oxide of silicon-aluminium alloy formed on the major surface subjected to the aluminium diffusion will not cause any damage of a photo-mask and at the same time accuracy in positioning the photo-mask may be improved. A failure to mount a semiconductor element onto a heat sink may also be prevented.
    • 一种制造这样的半导体器件的方法,其中铝层被选择性地沉积在硅半导体衬底的主表面上,此后铝通过在包括氧气的气氛中的热处理而被选择性地扩散到硅半导体衬底中。 在硅半导体衬底的至少一个主表面中选择性地形成凹部,将铝沉积到凹部上,然后对硅半导体衬底进行热处理以选择性地将铝扩散到硅半导体衬底中。 形成在经受铝扩散的主表面上的硅铝合金的氧化物层不会对光掩模造成任何损坏,同时可以提高光掩模的定位精度。 还可以防止将半导体元件安装到散热器上的故障。