摘要:
It is desirable to prevent breakage and separation of wiring of a semiconductor integrated circuit device, such as a bit-line of a DRAM. To accomplish this, disclosed is a method in which, e.g., a high density plasma silicon oxide film is deposited on wirings (e.g., a bit-line that is connected to the source and drain region of a memory cell selection MISFET of a DRAM memory cell) by means of a high density plasma CVD technique, at a first temperature, and the structure is subjected to RTA (heat treatment) at a second temperature higher than the first temperature (e.g., 750° C.). Via holes are then formed in the high density plasma silicon oxide film, and first and second conductive films are then formed, the first conductive film being formed in the via holes and at a third temperature lower than the first temperature. The first and second conductive layers are then polished to remain selectively within the via holes. In heat treating the high density plasma silicon oxide film, the temperature is raised from the first temperature to the second temperature at a maximum speed of 60° C./second or less.
摘要:
It is desirable to prevent breakage and separation of wiring of a semiconductor integrated circuit device, such as a bit-line of a DRAM. To accomplish this, an HDP silicone oxide film is deposited on a bit-line that is connected to the source and drain region of a memory cell selection MISFET of a DRAM memory cell by means of a high density plasma CVD technique, and the structure is subjected to RTA (heat treatment) at 750° C. The surface is polished, and then a capacitor to be connected to the other of the source and drain region of the memory cell selection MISFET is formed. As a result, even when a tantalum oxide film, that serves as a capacitance insulating film of the capacitor, is subjected to heat treatment, the film stress exerted on the bit-line is reduced, and breakage and separation of the bit-line are prevented.
摘要:
It is desirable to prevent breakage and separation of wiring of a semiconductor integrated circuit device, such as a bit-line of a DRAM. To accomplish this, a high density plasma silicon oxide film is deposited on a bit-line that is connected to the source and drain region of a memory cell selection MISFET of a DRAM memory cell by means of a high density plasma CVD technique, and the structure is subjected to RTA (heat treatment) at 750° C. The surface is polished, and then a capacitor, to be connected to the other of the source and drain region of the memory cell selection MISFET, is formed. As a result, even when a tantalum oxide film, that serves as a capacitance insulating film of the capacitor, is subjected to heat treatment, the film stress exerted on the bit-line is reduced, and breakage and separation of the bit-line are prevented.
摘要:
The technique for manufacturing a high-capacitance and high-accuracy MIM electrostatic capacitor by a small number of steps is provided. After a lower electrode of the electrostatic capacitor and second wiring are formed at the same time on a first interlayer insulating film, an opening part is formed in a second interlayer insulating film deposited on the first interlayer insulating film. Next, a capacitance insulating film, a second metal film and a protective metal film are sequentially deposited on the second interlayer insulating film including the interior of the opening part, and the protective metal film, the second metal film and the capacitance insulating film on the second interlayer insulating film are polished and removed by a CMP method, thereby causing the capacitance insulating film, an upper electrode made of the second metal film and the protective metal film to remain in the opening part.
摘要:
A vehicular door sash includes a sash frame formed by subjecting a predetermined metal sheet to a roll molding process to have a predetermined cross section. The sash frame includes a groove portion for retaining a glass-run channel, a retainer portion for retaining a weather strip, a flange portion that connects the retainer portion and the groove portion and partially forms an outer surface of a door of a vehicle, and a sash molding configured to cover the flange portion. The flange portion has a first configuration in which the flange portion is not covered by the sash molding and a second configuration in which the flange portion is covered and compressed by the sash molding.
摘要:
Provided is a technology capable of reducing parasitic capacitance of a capacitor while reducing the space occupied by the capacitor. A stacked structure is obtained by forming, over a capacitor composed of a lower electrode, a capacitor insulating film and an intermediate electrode, another capacitor composed of the intermediate electrode, another capacitor insulating film and an upper electrode. Since the intermediate electrode has a step difference, each of the distance between the intermediate electrode and lower electrode and the distance between the intermediate electrode and upper electrode in a region other than the capacitor formation region becomes greater than that in the capacitor formation region. For example, the lower electrode is brought into direct contact with the capacitor insulating film in the capacitor formation region, while the lower electrode is not brought into direct contact with the capacitor insulating film in the region other than the capacitor formation region.
摘要:
A silicon oxide film on which a capacitor of a semiconductor integrated circuit device is formed is formed by the plasma CVD method at a temperature of 450° C. to 700° C. In this semiconductor integrated circuit device, a memory cell formed of a MISFET for data transfer and a capacitor is formed in a memory cell forming area, and an n channel MISFET and a p channel MISFET constituting a logic circuit is formed in a logic circuit forming area. As a result, the amount of degassing from the silicon oxide film can be reduced. Therefore, the growth of silicon grains on a surface of the silicon film constituting a lower electrode of the capacitor is not hindered by the degassing, and it becomes possible to increase the capacitance. Also, the step of a heat treatment for removing the moisture and the like after forming the silicon oxide film can be omitted, and it becomes possible to prevent the deterioration of the property of the MISFET.
摘要:
A child seat is formed of a child seat main portion for holding a child having an engaging member, and a base on which the child seat main portion is detachably mounted. The base has a connecting portion to be connected to a vehicle, and a fixing member to be engageable with the engaging member of the child seat main portion. An engagement releasing member is installed in the base or the child seat main portion for releasing an engagement between the fixing member and the engaging member. Since the base can be connected to the vehicle without the child seat main portion, the child seat can be extremely simply fixed to the vehicle.
摘要:
The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m2·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.
摘要翻译:纤维素纤维扁平结构体的制造方法技术领域本发明涉及纤维素纤维平坦结构体的制造方法,其特征在于,使用平均纤维直径为4〜100nm的细纤维素纤维的细纤维素纤维分散体, 透水度不大于100ml / m 2·s,初始拉伸弹性模量为20MPa以上的过滤材料。 本发明能够通过从包含平均纤维直径在纳米级的细纤维素纤维的分散体中有效地回收细纤维素纤维而制造纤维素纤维平坦结构。 纤维素纤维平坦结构的制造方法也可以应用于连续工序。
摘要:
In this invention, the film thicknesses of an upper barrier film of a lower electrode of a capacitive element and an upper barrier film of a metallic interconnect layer formed in the same layer as this is made thicker than the film thicknesses of upper barrier films of other metallic interconnect layers. Moreover, in this invention, the film thickness of the upper barrier film of the lower electrode of the capacitive element is controlled to be 110 nm or more, more preferably, 160 nm or more. A decrease in the dielectric voltage of the capacitive dielectric film due to cracks in the upper barrier film does not occur and the deposition temperature of the capacitive dielectric film can be made higher, so that a semiconductor device having a MIM capacitor with high performance and high capacitance can be achieved, where the dielectric voltage of the capacitive dielectric film is improved.