摘要:
A semiconductor device is provided wherein stacked semiconductor substrates are electrically coupled together in a satisfactory state by a conductor buried in the interior of a through hole. A first semiconductor substrate includes a substrate having main surfaces, further includes a semiconductor element formed within and over the substrate, a wiring coupled to the semiconductor element electrically, and a conductive layer formed in the interior of a through hole, the through hole extending through mutually confronting first and second main surfaces as the main surfaces of the substrate and reaching the wiring. The first semiconductor substrate and a second semiconductor substrate are stacked and the conductive layer is coupled to a wiring of the second semiconductor substrate electrically. In a second main surface of the conductive layer, a recess is formed around an end portion of the through hole so that a bottom wall surface of the recess is present in the interior of the substrate. A conductive material which constitutes the conductive layer is filled in the interior of the recess.
摘要:
Resist residues, which is formed in a process of forming Al interconnections, are removed through use of a single chemical. A chemical which contains an organic acid or a salt thereof and water and which has a pH below 8 is used as a treatment for removing resist or resist residues. The chemical may be used in a process in which Al, W, Ti, TiN, and SiO2 are exposed on the surface of a wafer after etching of an Al interconnection; in a process in which Al, W, Ti, TiN, and SiO2 are exposed on the surface of a wafer after etching a hole reaching an Al interconnection in an dielectric layer; in a process in which Cu is exposed on the surface of a semiconductor wafer after dry-etching of a Cu interconnection or etching of an interlayer dielectric film laid on a Cu interconnection; and in a process in which metal material such as W, WN, Ti, or TiN; poly-Si; SiN; and SiO2 are exposed on the surface of a wafer after etching of a metal gate.
摘要:
The resist residue removal method removes resist residues caused at the time of formation of an aluminum wiring pattern on a semiconductor wafer. The method includes the steps of removal fluid processing, washing, and drying. The method involves forming an atmosphere within a chamber, which houses a semiconductor wafer having an exposed aluminum wiring pattern, by controlling gas flow into the chamber according to the processing step being performed. By the resist residue removal method, yield of a wiring pattern is improved by prevention of local etching of an aluminum wiring pattern, or by prevention of thinning of the aluminum wiring pattern.
摘要:
To provide a semiconductor device in which the deterioration of the rewrite property is suppressed. In a memory cell region, magnetoresistive elements in a semiconductor magnetic-storage device are formed in an array shape in a mode that the magnetoresistive elements are arranged at portions where digit lines extending in one direction intersect bit lines extending in the direction approximately orthogonal to the digit lines. The digit line and the bit line have such a wiring structure constituted by covering a copper film to be a wiring main body with a cladding layer. One end side of the magnetoresistive element is electrically coupled to the bit line via a top via formed from a non-magnetic material.
摘要:
A semiconductor device producing method that can clean an edge part of a semiconductor substrate with certainty is provided. The method of producing a semiconductor device includes a step of generating ions and a step of accelerating the ions by means of an electric field and radiating an ion flow onto an edge part of a semiconductor substrate to clean the edge part of the semiconductor substrate. The semiconductor substrate is moved relative to the ion flow while maintaining a state in which the ion flow is being radiated onto the edge part. The step of generating ions includes applying a high-frequency voltage between a pair of electrodes to generate the ions between the electrodes.
摘要:
An organic substance analyzing system identifies and quantifies organic substances adhering to the surface of a sample placed in a chamber for a local organic substance analysis on the surface of the sample. The organic substance analyzing system heats a portion of the sample from the front side or the back side of the sample, collects gases discharged out of the portion of the surface and analyzes the collected gases. A lamp, a laser or an electron beam source is used as a heating means for locally heating a portion to be analyzed on the surface of the sample to locally discharge the gases out of the portion. Otherwise, the entire surface of the sample is heated, and the discharged gases are collected for every section so as to be analyzed.
摘要:
A method of fabricating a semiconductor device causing no pattern shifting of a peripheral oxide film etc. in removal of both of an antireflection film and a mask pattern and having a fine structure not implementable solely by photolithography and the semiconductor device are obtained. The method of fabricating a semiconductor device comprises steps of forming a base film of either a silicon film or a silicon compound film on a semiconductor substrate, forming a hard film of either a metal film or a metal compound film on the base film, forming a resist pattern on the hard film, dryly etching the hard film through the resist pattern serving as a mask for forming a hard pattern, dryly etching the base film through the hard pattern serving as a mask and removing the hard pattern by wet etching with a chemical solution not etching at least the base film.
摘要:
In a semiconductor wafer-processing, hydrogen gas is introduced into the same chamber as used for film formation and heated to generate hydrogen radicals. Alternatively, a plasma is applied to generate hydrogen radicals, or the semiconductor wafer is heated immediately before film formation. Thereby, contaminants on the surface of the wafer are removed. Thereafter, a conductive film or an insulating film is formed on the wafer in the same chamber.
摘要:
In a water rinsing process performed after the surface of a substrate has been cleaned using a cleaning solution, a first spinning process, in which water is supplied to the surface of the substrate while the substrate is rotated at a first rotation speed, and a second spinning process, in which the substrate is rotated at a second rotation speed that is higher than the first rotation speed, are repeatedly performed alternately.
摘要:
Disclosed is a method for removing Pt (or Pt—Ir) and BST contaminants on the surface edge, back, and bevel of a semiconductor wafer. A wafer on which a stacked film selected from the group of a Pt film, a Pt—Ir film, and a Ba—Sr—Ti film is formed is prepared. A chemical containing hydrochloric acid is applied only to the surface edge, back, and bevel of the wafer. The surface edge, back, and bevel of the wafer are rinsed with pure water. Further, a chemical containing hydrogen fluoride is applied. The surface edge, back, and bevel of the wafer are rinsed again with pure water.