摘要:
The present invention provides a semiconductor technology capable of suppressing an increase in threshold voltage of a transistor and, also, improving a withstand voltage between a source region and a drain region. Source and drain regions of a p channel type MOS transistor are formed in an n− type semiconductor layer in an SOI substrate. In addition, an n type impurity region is formed in the semiconductor layer. The impurity region is formed over the entire bottom of the source region at a portion directly below this source region, and is also formed directly below the semiconductor layer between the source region and the drain region. A peak position of an impurity concentration in the impurity region is set below a lowest end of the source region at a portion directly below an upper surface of the semiconductor layer between the source region and the drain region.
摘要:
The present invention provides a semiconductor technology capable of suppressing an increase in threshold voltage of a transistor and, also, improving a withstand voltage between a source region and a drain region. Source and drain regions of a p channel type MOS transistor are formed in an n− type semiconductor layer in an SOI substrate. In addition, an n type impurity region is formed in the semiconductor layer. The impurity region is formed over the entire bottom of the source region at a portion directly below this source region, and is also formed directly below the semiconductor layer between the source region and the drain region. A peak position of an impurity concentration in the impurity region is set below a lowest end of the source region at a portion directly below an upper surface of the semiconductor layer between the source region and the drain region.
摘要:
The method for manufacturing a semiconductor device includes the steps of: removing an oxide film in a region including a fuse region at the formation of an opening for the formation of a vertical interconnection in an oxide film serving as an upper insulating layer; and forming the vertical interconnection for electrically connecting interconnection layers below and above the oxide film and the interconnection layer placed on an upper side of the oxide film as one upper conductive layer at the same time.
摘要:
A base of a low breakdown voltage npn bipolar transistor has p+ diffusion layers. A field insulating layer is formed on the p+ diffusion layer located between the p+ diffusion layer and an emitter, while the p+ diffusion layer encloses the surface of the emitter and has a window part immediately under the emitter. Thus, a semiconductor device and a method of fabricating the same capable of suppressing dispersion of a current amplification factor hFE in a wafer plane of the low breakdown voltage transistor and fabricating the low breakdown voltage transistor and a high breakdown voltage transistor through simple steps are obtained.
摘要:
A bipolar transistor is formed on a semiconductor substrate. A Schottky diode is formed in the collector region of the bipolar transistor. The collector region and the semiconductor substrate are isolated in potential from each other by potential isolating layers.
摘要:
A semiconductor device which has few peripheral element malfunctions and superior performance is obtained. The semiconductor device includes a p-type buried layer on a main surface of a semiconductor substrate, an n-type cathode region provided on the p-type buried layer, and a p-type anode region in contact with the side surface of the n-type cathode region, the p-type buried layer being higher than the p-type anode region in acceptor content, and the p-type buried layer being in contact with the bottom surfaces of the anode and cathode regions.
摘要:
A catheter comprising a sheath to be inserted into a living body, wherein the sheath includes a tubular reinforcement layer of at least one layer, which is formed with a spiral slit continuous from the distal side to the proximal side thereof; a termination end of the spiral slit is provided on the proximal side of the slit proximal portion at the site of the proximal side of the spiral slit; and at the same time, there is formed a slit termination portion in which inclination angle of the spiral slit with respect to the circumferential direction of the reinforcement layer is larger than that of the slit proximal portion
摘要:
Provided is a system which supports appropriate price setting so that a value for a provider in a transaction and a value for a customer reach an agreement. A price setting system stores a provider cost Cp and a return Rc obtained by a customer to calculate a transaction value Vp for the provider and a transaction value Vc for the customer in accordance with an evaluation index (benefit-based, price ratio-based, or ROI-based). Then, the price setting system outputs information that supports the setting of a price P satisfying Vp>0 and Vc>0.
摘要:
A solution design method and system for designing solution specification and estimating a period and a price speedily on the basis of customer needs, the budget of solution, the target period of implementation of solution, etc. The customer budget or period is used as a constraint so that a gap between solution specification as the customer's request and solution specification in consideration of the constraint is clarified so that tasks and resources taking charge of each other are clarified to satisfy the quality required by the customer. Individual resource conditions are set in consideration of priority of each solution task. The settings themselves can be changed arbitrarily in accordance with the customer needs. The definition of resource ranks in each customer can be executed again on the prerequisite of the customer's request or the like. While the prerequisite is clarified, design of solution specification and estimation can be performed simultaneously without assignment of resources.
摘要:
A value extracted on the basis of a customer demand supports description of an appealing scenario leading to a requirement and a solution. Examples of customer-values include that which appears to be welcome for a customer, that which appears to be pleasant, and an object, and such can form requirements necessary for accomplishing customer-values such as those which must be done by employees, top executives, etc. of a customer, and those which must be done by an end user who is a customer of a customer, together with solutions necessary for realization of requirements, etc., as a customer-value creating scenario view including a causal relation. In addition, in order to hold attribute models, which differ depending on kind of node such as value, requirement and solution, it is possible to carry out automatic node extraction by utilizing the attribute model.