摘要:
In MRAM, a write wiring clad in a ferromagnetic film has been used to reduce a write current or avoid disturbances. Besides, a CuAl wiring obtained by adding a trace of Al to a Cu wiring has been used widely to secure reliability of a high reliability product. There is a high possibility of MRAM being mounted in high reliability products so that reliability is important. Clad wiring however increases the resistance of the CuAl wiring, which is originally high, so that using both may fail to satisfy the specification of the wiring resistance. In the semiconductor device of the invention having plural copper-embedded wiring layers, copper wiring films of plural copper-embedded clad wirings configuring a memory cell matrix region of MRAM are made of relatively pure copper, while a CuAl wiring film is used as copper wiring films of copper-embedded non-clad wirings below these wiring layers.
摘要:
In MRAM, a write wiring clad in a ferromagnetic film has been used to reduce a write current or avoid disturbances. Besides, a CuAl wiring obtained by adding a trace of Al to a Cu wiring has been used widely to secure reliability of a high reliability product. There is a high possibility of MRAM being mounted in high reliability products so that reliability is important. Clad wiring however increases the resistance of the CuAl wiring, which is originally high, so that using both may fail to satisfy the specification of the wiring resistance. In the semiconductor device of the invention having plural copper-embedded wiring layers, copper wiring films of plural copper-embedded clad wirings configuring a memory cell matrix region of MRAM are made of relatively pure copper, while a CuAl wiring film is used as copper wiring films of copper-embedded non-clad wirings below these wiring layers.
摘要:
To provide a semiconductor device capable of write operation to a selected magnetoresistive element without causing a malfunction of a non-selected magnetoresistive element and a manufacturing method of this semiconductor device. The semiconductor device includes a magnetic storage element having a magnetization free layer whose magnetization direction is made variable and formed over a lead interconnect and a digit line located below the magnetic storage element, extending in a first direction, and capable of changing the magnetization state of the magnetization free layer by the magnetic field generated. The digit line includes an interconnect body portion and a cladding layer covering therewith the bottom surface and the side surface of the interconnect body portion and opened upward. The cladding layer includes a sidewall portion covering therewith the side surface of the interconnect body portion and a bottom wall portion covering therewith the bottom surface of the interconnect body portion. The thickness of the sidewall portion is made greater than that of the bottom wall portion.
摘要:
To provide a semiconductor device capable of write operation to a selected magnetoresistive element without causing a malfunction of a non-selected magnetoresistive element and a manufacturing method of this semiconductor device. The semiconductor device includes a magnetic storage element having a magnetization free layer whose magnetization direction is made variable and formed over a lead interconnect and a digit line located below the magnetic storage element, extending in a first direction, and capable of changing the magnetization state of the magnetization free layer by the magnetic field generated. The digit line includes an interconnect body portion and a cladding layer covering therewith the bottom surface and the side surface of the interconnect body portion and opened upward. The cladding layer includes a sidewall portion covering therewith the side surface of the interconnect body portion and a bottom wall portion covering therewith the bottom surface of the interconnect body portion. The thickness of the sidewall portion is made greater than that of the bottom wall portion.
摘要:
A semiconductor device includes an interlayer film formed over a semiconductor substrate. A groove is formed in the interlayer film. A wiring formed in the groove is a copper alloy including copper and a metal element. An oxide layer of the metal element is formed over the surface of the wiring. The oxide layer is formed in a first region along a grain boundary of a copper crystal and a second region surrounded by the grain boundary, over the surface of the wiring. The oxide layer formed in the first region has a thickness greater than that of the oxide layer formed in the second region.
摘要:
The present invention aims at providing a method of manufacturing a semiconductor device capable of suppressing metal diffusion from the upper face of wiring.In the present invention, a copper seed film containing copper and a first metal element is formed in a groove formed in a first interlayer film over a semiconductor substrate. After that, a copper plating treatment is performed. After that, a first heat treatment is performed in a first atmosphere in which the copper layer is not oxidized. Then, an excess metal layer of copper alloy is removed and copper alloy wiring is formed in the groove. After that, a second heat treatment is performed in a second atmosphere containing oxygen to form an oxide layer being the oxide of the first metal element over the surface of the copper alloy wiring.
摘要:
A document capture system may automatically capture documents and/or financial information for a user. The document capture system may capture and save documents a user views in a web browser. A user may visit various web sites to view financial data and a document capture plug-in module installed in the web browser may capture or save the viewed document. The document capture system may capture financial data while the user is visiting web sites normally—that is, not just when the user if visiting them particularly to collect financial data. The document capture system may be configured to automatically detect when the user views certain documents and may be configured to continually monitor the user's web activity in order to capture financial documents whenever the user visits certain sites. The document capture system may include a list of URLs representing web sites or documents that should be automatically captured.
摘要:
In a machining apparatus, complete control of the movement, stopping, speed and displacement of a tool mounted on a rotating face plate is achieved by using a first motor to cause rotation of the face plate, causing the first motor to rotate a ring gear along with the face plate, controlling the relative speeds of the face plate and the ring gear by means of a second motor and a differential mechanism, and moving the tool on the face plate in response to a difference in the rotational speeds of the face plate and the ring gear.
摘要:
A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.
摘要:
A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.