摘要:
A semiconductor device. A semiconductor substrate has a first conductivity. A first insulating layer is on the semiconductor substrate and has an opening so that a portion of the semiconductor substrate is exposed. A semiconductor layer has a second conductivity on the portion. A region in said semiconductor layer prevents a leakage current caused by a minute defect and faceting.
摘要:
A semiconductor device and a method for manufacturing the same, in which a leak current generated in a pn junction formed between a silicon substrate and an epitaxial layer can be reduced. A silicon oxide film is formed on a silicon substrate having a (100) crystal plane. The silicon oxide film is patterned to form an opened portion and an inclined surface on a pattern edge of the silicon oxide film. The inclined surface forms an angle of 54.74.+-.5.degree. with the silicon substrate. An epitaxial layer is formed in the opened portion by selective epitaxial growth.
摘要:
A process for producing an alkoxy-substituted tri-phenylamine comprising reacting an alkoxy-substituted cyclohexanone with a diphenylamine or an aniline, while forming said cyclohexanone in the same system from an alkoxy-substituted phenol by using said phenol as a hydrogen acceptor, in the presence of a hydrogen transfer catalyst and a catalytic amount of the alkoxy-substituted cyclohexanone corresponding to the alkoxy-substituted phenol used for the reaction, or after converting partially the alkoxy-substituted phenol to a catalytic amount of the alkoxy-substituted cyclohexanone under a hydrogen pressure in the presence of a hydrogen transfer catalyst, wherein a surface-supported catalyst is used as the hydrogen transfer catalyst.
摘要:
A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.
摘要:
According to the method of manufacturing a semiconductor device of the present invention, an insulation film is formed on a silicon substrate, and a resist film having a predetermined pattern is formed on the insulation film, followed by forming an opening on the insulation film with the resist film performing as a mask. Then, an impurity having conductivity are implanted into said silicon substrate with the resist film performing as a mask and silicon ions are implanted into the silicon substrate with the resist film performing as a mask. After that, the resist film is removed. Further, a refractory metal film which covers at least the opening is formed. Moveover, a diffusion layer which causes electrical activation of the impurity having conductivity is formed by annealing, followed by formation a silicide layer at where the surfaces of the silicon substrate and the metal film meet.
摘要:
A suspension member mounting structure for mounting on a vehicle body a suspension member, with which left and right suspension arms each supporting a wheel are connected, through a front cushion group and a rear cushion group. The front cushion group has two cushion mounts attached to two positions of the suspension member in front of a rotary axis of the wheels and the rear cushion group has two cushion mounts attached to two positions of the suspension member behind the rotary axis of the wheels. Each cushion mount of the front cushion group is disposed to have a hole first, through which a bolt extends, extending vertically of the vehicle body and each cushion mount of the rear cushion group is disposed to have a second hole, through which a bolt extends, extending longitudinally of the vehicle body.
摘要:
A pharmaceutical composition for the treatment of infantile autism which contains tetrahydrobiopterin or a derivative thereof as a major effective ingredient and 5-hydroxytryptophan and/or L-DOPA as an optional auxiliary effective ingredient is provided.