摘要:
The present invention relates to a laser-rotating arc hybrid welding system and a welding method using the system. The laser-rotating arc hybrid welding system of the present invention includes an arc discharge unit (2) for generating arc discharge along an area to be welded. A laser generation unit (4) radiates laser light onto the area to be welded. A rotating device (24) rotates the arc discharge unit (2). In the welding method using the laser-rotating arc hybrid welding system, a plurality of parent metals is aligned with a welding location. A laser-rotating arc hybrid welding system is located with respect to an area to be welded, arc discharge is generated while an arc discharge unit is rotated at a predetermined turning radius, and laser light is subsequently radiated using a laser generation unit.
摘要:
A transistor of a semiconductor device includes a substrate, a gate over the substrate, a source/drain region formed in the substrate to have a channel region therebetween, and an epitaxial layer formed below the channel region to have a different lattice constant from the substrate. The epitaxial layer having a different lattice constant with a substrate material is formed below the channel region to apply a stress to the channel region. Thus, the mobility of carriers of the transistor increases.
摘要:
A transistor of a semiconductor device includes a substrate, a gate over the substrate, a source/drain region formed in the substrate to have a channel region therebetween, and an epitaxial layer formed below the channel region to have a different lattice constant from the substrate. The epitaxial layer having a different lattice constant with a substrate material is formed below the channel region to apply a stress to the channel region. Thus, the mobility of carriers of the transistor increases.
摘要:
The present invention relates to a method of forming an interconnection for a semiconductor device using copper. The method of the invention, including the steps of forming an insulating layer having a groove on a semiconductor substrate containing active elements; forming and depositing a copper thin film on the insulating layer including the groove; and reflowing the copper thin film, may reflow the copper thin film deposited on the semiconductor substrate having a high-step surface for less than 30 min. below 450.degree. C., which show improved annealing conditions as compared with the conventional art. In addition, by reducing consumption of thermal energy in accordance with a low-temperature process, copper is restrained from being rapidly diffused through a silicon substrate, electrodes, etc. when forming the interconnection for the semiconductor device, thus improving productivity of the semiconductor devices.
摘要:
A method for fabricating an integrated circuit includes the steps of forming an isolating insulation film on a portion of a semiconductor substrate, forming a gate insulating film, a first conductive layer, an insulating film and a second conductive layer successively on the semiconductor substrate including the isolating insulation film, selectively removing the second conductive layer and the insulating film to pattern an upper electrode of a capacitor in a capacitor forming region and a dummy gate electrode in a transistor forming region, respectively, forming a lower electrode mask in the capacitor forming region, and selectively removing the first conductive layer and the gate insulating film by using the lower electrode mask and the dummy gate electrode as masks, to form a lower electrode of the capacitor and the gate electrode of the transistor.
摘要:
The present invention provides a method for preparing a film comprising a high amount of a sildenafil free base uniformly dispersed therein and having a suitable thickness and size, as well as flexibility providing good handling stability and being not prone to breaking. The present invention also provides a sildenafil free base-containing film prepared from the method.
摘要:
The present invention provides a method for fabricating a semiconductor device capable of preventing a contact resistance from increasing in a region contacted to an N-type conductive region during forming a conductive pattern directly contacted to the N-type conductive region including a conductive pattern and silicon, and preventing an increase in a parasitic capacity of the conductive pattern according to an increase in a thickness of a barrier layer.
摘要:
The present invention provides a method for preparing a film comprising a high amount of a sildenafil free base uniformly dispersed therein and having a suitable thickness and size, as well as flexibility providing good handling stability and being not prone to breaking. The present invention also provides a sildenafil free base-containing film prepared from the method.
摘要:
A method for fabricating a semiconductor device includes forming a plurality of bit line structures over a substrate, forming multiple layers of spacer layers with a capping layer interposed therebetween over the bit line structures, exposing a surface of the substrate by selectively etching the spacer layers, forming air gaps and capping spacers for covering upper portions of the air gaps by selectively etching the capping layer, and forming storage node contact plugs between the bit line structures.
摘要:
The present invention provides a method for fabricating a semiconductor device capable of preventing a contact resistance from increasing in a region contacted to an N-type conductive region during forming a conductive pattern directly contacted to the N-type conductive region including a conductive pattern and silicon, and preventing an increase in a parasitic capacity of the conductive pattern according to an increase in a thickness of a barrier layer.