摘要:
A slurry contains MnO.sub.2 or other manganese oxide as a primary component of abrasive particles. Further, a polishing process using such a manganese oxide abrasive and a fabrication process of a semiconductor device using such a polishing process are disclosed.
摘要:
A slurry contains MnO.sub.2 or other manganese oxide as a primary component of abrasive particles. Further, a polishing process using such a manganese oxide abrasive and a fabrication process of a semiconductor device using such a polishing process are disclosed.
摘要:
A slurry contains MnO.sub.2 or other manganese oxide as a primary component of abrasive particles. Further, a polishing process using such a manganese oxide abrasive and a fabrication process of a semiconductor device using such a polishing process are disclosed.
摘要:
A method of fabricating a semiconductor device includes a step of polishing a surface of a substrate by a chemical mechanical polishing process conducted on a polishing cloth by a slurry. The polishing is conducted so that projections having a height of about 30 .mu.m or less are formed on the polishing cloth with an interval of about 55 .mu.m or less as a result of the polishing.
摘要:
An apparatus and method for polishing a semiconductor wafer. A polisher includes a supporting plate having a conductive film and a polishing cloth formed on the conductive film of the supporting plate. The polishing cloth has a plurality of openings to expose the conductive film. A wafer holder has a conductive wafer holding surface to hold a semiconductor wafer having current detective patterns and an insulating film covering the current detective patterns. A polishing slurry supply device supplies a polishing slurry including ions to either the polishing cloth or the semiconductor wafer. A current detecting device, connected to the supporting plate and the wafer holder, detects a magnitude of a current flowing across the supporting plate and the wafer holder through the conductive wafer holding surface, the semiconductor wafer held by the wafer holder, the current detective patterns of the semiconductor wafer, the polishing slurry filled in the openings of the polishing cloth, and the conductive film.
摘要:
For providing a method for polishing in which it is possible to polish a substance uniformly over a whole surface of a wafer without observing the polished surface of the wafer halfway through polishing, a wafer with current detective patterns formed of conductors directly contacted with a semiconductor substrate, and an insulating film covering the current detective patterns is held by a wafer holder with conductivity, and the insulating film is polished by a polisher in which a supporting plate with conductivity is exposed in openings through a polishing cloth while supplying a polishing slurry containing ions.
摘要:
A polishing apparatus comprises a first surface plate for supporting a polishing object, a driving mechanism for rotating the first surface plate, a second surface plate arranged so as to oppose to the first surface plate, an abrasive cloth stuck to the second surface plate, a vibration detector attached to the first surface plate or the second surface plate for detecting vibration in polishing, a controlling portion for controlling polishing operation of the first surface plate and the second surface plate, and signal analyzing unit for analyzing vibration intensity detected by the a vibration detector through frequency analysis, integrating the vibration intensity relative to time, and transmitting a polishing stop signal to stop polishing operation of the first surface plate and the second surface plate to the controlling portion when variation in a resultant integral value relative to time is less than a first reference value or when the resultant integral value is less than a second reference value.
摘要:
A method for fabricating an SOI structure which includes the steps of contacting a single crystal layer of a group III-V compound semiconductor material to a single crystal substrate of sapphire such that a principal surface of said single crystal layer establishes an intimate contact with a corresponding principal surface of said single crystal substrate and bonding the single crystal layer and the single crystal substrate with each other while elevating a temperature.
摘要:
A silicon-on-insulator (SOI) structure having a single crystal layer of a group III-V compound semiconductor material contacting a single crystal substrate of sapphire such that a principal surface of the single crystal layer establishes an intimate contact with a corresponding principal surface of the single crystal substrate and the single crystal layer, and the single crystal substrate are bonded with each other while elevating a temperature.
摘要:
Process for the production of semiconductor devices by using silicon-on-insulator (SOI) techniques. The Si layers of the SOI structure include an interfacial layer of Si and a buffer layer of Si formed thereon, whereby the formation of stacking faults in the Si layers can be effectively prevented. Pretreatment of the underlying insulating material with a molybdate solution and interposition of an additional layer of slowly grown single-crystalline Si between the buffer layer of Si and the overlying active Si layer are also effective to inhibit the stacking faults. Semiconductor devices with high quality can be produced with good yield.