摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first floating gate formed on a main surface of the semiconductor substrate, a second floating gate formed on the main surface of the semiconductor substrate, a first control gate formed on the first floating gate, a second control gate formed on the second floating gate, an interlayer insulating film, and a gap formed in the interlayer insulating film in at least a portion located between the first and second floating gates. Accordingly, a nonvolatile semiconductor memory device for which variations in threshold voltage of a memory cell can be suppressed and an appropriate read operation can be carried out, as well as a method of manufacturing the nonvolatile semiconductor memory device are provided. Further, a capacitance formed between interconnect lines can be reduced and the drive speed can be improved.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first floating gate formed on a main surface of the semiconductor substrate, a second floating gate formed on the main surface of the semiconductor substrate, a first control gate formed on the first floating gate, a second control gate formed on the second floating gate, an interlayer insulating film, and a gap formed in the interlayer insulating film in at least a portion located between the first and second floating gates. Accordingly, a nonvolatile semiconductor memory device for which variations in threshold voltage of a memory cell can be suppressed and an appropriate read operation can be carried out, as well as a method of manufacturing the nonvolatile semiconductor memory device are provided. Further, a capacitance formed between interconnect lines can be reduced and the drive speed can be improved.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first floating gate formed on a main surface of the semiconductor substrate, a second floating gate formed on the main surface of the semiconductor substrate, a first control gate formed on the first floating gate, a second control gate formed on the second floating gate, an interlayer insulating film, and a gap formed in the interlayer insulating film in at least a portion located between the first and second floating gates. Accordingly, a nonvolatile semiconductor memory device for which variations in threshold voltage of a memory cell can be suppressed and an appropriate read operation can be carried out, as well as a method of manufacturing the nonvolatile semiconductor memory device are provided. Further, a capacitance formed between interconnect lines can be reduced and the drive speed can be improved.
摘要:
An anti-fuse element that includes a capacitance unit having an insulation layer and at least a pair of electrode layers formed on upper and lower surfaces of the insulation layer. The capacitance unit has a protection function against electrostatic discharge. Because the capacitance unit has a protection function against electrostatic discharge, an anti-fuse element can be provided which is less likely to cause insulation breakdown due to electrostatic discharge at the time of, for example, mounting a component.
摘要:
A thin film capacitor including a substrate, a capacitor portion having an upper conductor, a lower conductor, and a dielectric thin film, and a resin protective layer for protecting the capacitor portion. A barrier layer is interposed between the capacitor portion and the resin protective layer. The barrier layer includes a crystalline dielectric barrier layer formed in contact with the capacitor portion and having the same composition system as the dielectric thin film, and an amorphous inorganic barrier layer formed on the surface of the crystalline dielectric barrier layer and composed of silicon nitride having non-conductivity. The inorganic barrier layer prevents deterioration in the properties of the dielectric thin film by blocking diffusion of the constituent elements of the inorganic barrier layer toward the capacitor portion.
摘要:
A method for forming a thin film comprises the steps of: forming a first thin film using a raw material which comprises an adduct of metal &bgr;-diketonate and adduct-forming material by a metal organic chemical vapor deposition (MOCVD) method; associating metal &bgr;-diketonate dissociated from the adduct in the raw material with an adduct-forming material to regenerate the raw material; and forming a second thin film using the regenerated raw material by the MOCVD method.
摘要:
A thin film multilayer capacitor and a method for mounting it are provide wherein the capacitor is small and thin, can furnish a large capacitance, and is hard to be damaged at the time of mounting on a wiring substrate. The thin film multilayer capacitor 10 comprises a substrate 12 and a laminated body 14 formed thereon. The laminated body 14 is formed by laminating electrode layers 16 and dielectric layers 18. The electrode layers 16 are divided into a first group of electrode layers 16a and a second group of electrode layers 16b by the dielectric layers 18. The electrode layers 16a of the first group and the electrode layers 16b of the second group are laminated in an alternate manner with the dielectric layers 18 intervening therebetween, the plurality of electrode layers 16a of the first group are connected with each other, and the plurality of electrode layers 16b of the second group are also connected with each other. A protective film 20 is formed on the surrounding surfaces of the laminated body 14, and solder bumps 24 are formed at the openings 22.
摘要:
An anti-fuse element that includes first and second electrode films on both of upper and lower surfaces of a dielectric film to form an element body. When an operation voltage is applied to the element body, the first and second electrode films are fused by heat generation by electrification, whereby balled portions are formed, and a crack also occurs in the dielectric film. Then, the balled portions are enlarged, the dielectric film is completely divided, and the first and second electrode films are welded and integrated with each other in a mode of tangling end portions of the dielectric film, and form bonded portions that turn the anti-fuse element into a conducting state.
摘要:
A thin-film capacitor and a method for making the thin-film capacitor having a structure that can prevent vertical stress acting on outer connecting terminals, such as bumps, from concentrating on electrode layers, and capable of easily increasing the equivalent series resistance to a desired value. The thin-film capacitor includes a substrate, a capacitor unit disposed above the substrate and composed of at least one dielectric thin film and two electrode layers, a protective layer covering at least part of the capacitor unit, a lead conductor electrically connected to one of the electrode layers of the capacitor unit, and a bump disposed above the lead conductor. The lead conductor includes a connecting part disposed in an opening in the protective layer and electrically connected to one of the electrode layers of the capacitor unit, and a wiring part extending over the protective layer. The bump is disposed above the wiring part.
摘要:
A method for producing a thin film laminated capacitor that makes it possible to reduce the number of operations for etching its electrode layers and its dielectric layers. On a substrate, a capacitor part is formed wherein n electrode layers and (n−1) dielectric layers are alternately laminated onto each other, wherein n is 4 or more. The capacitor part is etched from the same side k times. In any ith etching operation, through holes are formed in an amount corresponding to respective ai layers of the electrode layers and the dielectric layers. At least one of ai's is set to 2 or more, and k is made smaller than n−1, thereby making it possible to make the 2nd to nth layers of the electrode layers from the etching starting side exposed at the bottom surfaces of the through holes.