摘要:
A semiconductor device including a semiconductor substrate; an element isolation region having a trench filled with an insulating film defined on the semiconductor substrate; a memory cell transistor formed in an element forming region isolated by the element isolating regions of the semiconductor substrate; and the memory cell transistor includes a gate insulating film formed on a surface of the element forming region; a floating gate formed over the gate insulating film; an inter-gate insulating film formed integrally so as to cover the floating gate and the insulating film of the element isolation region and having high dielectric constant in a portion corresponding to the floating gate and low dielectric constant in a portion corresponding to the insulating film of the element isolation region; and a control gate stacked over the floating gate via the inter-gate insulating film.
摘要:
A semiconductor device including a semiconductor substrate; an element isolation region having a trench filled with an insulating film defined or the semiconductor substrate; a memory cell transistor formed in an element forming region isolated by the element isolating regions of the semiconductor substrate; and the memory cell transistor includes a gate insulating film formed on a surface of the element forming region; a floating gate formed over the gate insulating film; an inter-gate insulating film formed integrally so as to cover the floating gate and the insulating film of the element isolation region and having high dielectric constant in a portion corresponding to the floating gate and low dielectric constant in a portion corresponding to the insulating film of the element isolation region; and a control gate stacked over the floating gate via the inter-gate insulating film.
摘要:
A semiconductor device including a semiconductor substrate; a first gate insulating film formed on the semiconductor substrate; a first gate electrode layer formed on the first gate insulating film; an element isolation insulating film formed so as to isolate a plurality of the first gate electrode layers; a second gate insulating film layer formed so as to cover upper surfaces of the plurality of first gate electrode layers and the element isolation insulating films; and a second gate electrode layer formed on the second gate insulating film layer; and the second gate insulating film layer includes a NONON stacked film structure and a nitride film layer contacting the first gate electrode layer and constituting a lowermost layer of the NONON stack film structure is separated at a portion interposing the plurality of neighboring first gate electrode layers.
摘要:
SiGe or SiC films are selectively grown on source/drain regions, followed by selectively growing silicon. A monocrystalline film having a high dislocation density or a polycrystalline film can be grown in growing the silicon film by making the C or Ge concentration higher than a predetermined level. The silicon layer on each of the source/drain regions is not monocrystalline or, even if monocrystalline, has a high density of dislocation. Therefore, the silicon film formed thereon is in the form of a monocrystalline silicon film having a high dislocation density or a polycrystalline silicon film. It is possible to suppress an impurity diffusion to reach a deep region caused by channeling of ions generated in the doping step by means of an ion implantation.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first insulation layer formed on the semiconductor substrate, a charge storage layer formed on the first insulation layer, a second insulation layer formed on the charge storage layer, and a control electrode formed on the second insulation layer. The second insulation layer includes a first silicon oxide film formed above the charge storage layer, a silicon nitride film formed on the first silicon oxide film, a metal oxide film formed on the silicon nitride film, and a nitride film formed on the metal oxide film. The metal oxide film has a relative permittivity of not less than 7.
摘要:
A method of manufacturing a semiconductor device includes forming a trench in a semiconductor substrate, isotropically forming a trench surface insulating film on an inner surface of the trench, the trench surface insulating film including a deep part functioning as a capacitor insulating film, forming a surface layer side insulating film on the inner surface of the trench so that the surface layer side insulating film is continuously rendered thinner from the surface side of the substrate toward the deep side of the trench, and forming an electrode layer inside the surface layer side insulating film and the trench surface insulating film both formed on the inner surface of the trench.
摘要:
A semiconductor device comprises a semiconductor substrate; a trench formed in the semiconductor substrate or in a layer deposited on the semiconductor substrate; a first conductive layer deposited in the trench and having a recess in the top surface thereof; a buried layer which buries the recess of the first conductive layer and which is made of a material having a melting point lower than that of the first conductive layer; and a second conductive layer formed on the buried layer inside the trench and electrically connected to the first conductive layer.
摘要:
A system for predicting life of a rotary machine, includes a vibration gauge configured to measure time series data of a peak acceleration of the rotary machine; a band pass filter configured to filter an analog signal of the time series data of the peak acceleration measured by the vibration gauge in a frequency band including a first analysis frequency expressed as a product of an equation including a number of rotor blades of the rotary machine and a normal frequency unique to the rotary machine; and a data processing unit configured to predict a life span of the rotary machine by characteristics of the filtered analog data of the time series data of the peak acceleration with the first analysis frequency.
摘要:
A thin film solar cell includes, on a substrate, a first electrode layer formed of a transparent conductive material, a photoelectric conversion layer, and a second electrode layer including a conductive material that reflects light. The thin film solar cell includes a plurality of unit solar battery cells divided by scribe lines. The second electrode layer and the first electrode layer of the unit solar battery cell adjacent to the second electrode layer are connected in the scribe line formed in the photoelectric conversion layer. The unit solar battery cells are electrically connected in series. The scribe lines on both sides of at least one of the unit solar battery cells are formed such that the unit solar battery cell held between the scribe lines meanders while having fixed width in a predetermined direction and have same shapes that overlap when the scribe lines translate in the predetermined direction.
摘要:
A thin-film solar battery is constructed such that it includes a translucent insulating substrate, a first transparent conductive film formed of a crystalline transparent conductive film on the translucent insulating substrate, with an uneven structure on a surface thereof, a second transparent conductive film formed of a transparent conductive film on the first transparent conductive film, with an uneven structure on a surface thereof, where the uneven structure is more gentle than the uneven structure of the first transparent conductive film, a power generation layer formed on the second transparent conductive film and having at least one crystalline layer to generate power, and a backside electrode layer formed of a light-reflective conductive film on the power generation layer. A substantially convex hollow portion projecting from the translucent insulating substrate is provided between adjacent convex portions in the uneven structure of the first transparent conductive film.