摘要:
An in-situ thickness monitoring/endpoint detection method and apparatus for chemical-mechanical polishing (CMP) of a dielectric layer on a top surface of a semiconductor wafer is disclosed. The apparatus comprises center and guard electrodes and associated electronic circuitry, including a high frequency, low voltage signal generating means, for converting a current which is inversely proportional to the dielectric layer thickness into a corresponding analog voltage. A position detection device triggers an analog-to-digital converter to convert the analog voltage into a digital signal while the wafer is located within a detection region as the wafer is being polished. A control means gathers the digital signals corresponding to the thickness data for processing and CMP device control.
摘要:
A method of laser planarizing metallic thin films minimizes the laser fluences required to melt or nearly melt the metalization. This is accomplished by reducing the optical reflectivity of the metallic lines and vias by using textured thin films. This reduction of optical reflectivity, in turn, reduces the minimum fluence needed to melt or nearly melt the metal using a laser, thus improving the process window and minimizing the damage to the surrounding media.
摘要:
The polishing pad for a chemical mechanical polishing apparatus, and a method of making the same. The polishing pad has a covering layer with a polishing surface and a backing layer which is adjacent to the platen. A first opening in the covering layer with a first cross-sectional area and a second opening in the backing layer with a second, different cross-sectional area form an aperture through the polishing pad. A substantially transparent polyurethane plug is positioned in the aperture, and an adhesive material fixes the plug in the aperture.
摘要:
The polishing pad for a chemical mechanical polishing apparatus, and a method of making the same. The polishing pad has a covering layer with a polishing surface and a backing layer which is adjacent to the platen. A first opening in the covering layer with a first cross-sectional area and a second opening in the backing layer with a second, different cross-sectional area form an aperture through the polishing pad. A substantially transparent polyurethane plug is positioned in the aperture, and an adhesive material fixes the plug in the aperture.
摘要:
A process using a retaining ring assembly of a carrier head to precompress a polishing pad to reduce or minimize the edge effect in a chemical mechanical polishing process.
摘要:
The present invention discloses a method of forming fine conductive lines, patterns, and connectors, and is particularly useful in the formation of electronic devices. The method comprises a series of steps in which: a polymeric material is applied to a substrate; the polymeric material is patterned to form openings through, spaces within, or combinations thereof in the polymeric material; subsequently, conductive material is applied to the patterned polymeric material, so that it at least fills the openings and spaces existing in the polymeric material; and excess conductive material is removed from the exterior major surface of the polymeric material using chemical-mechanical polishing, to expose at least the exterior major surface of the polymeric material. The structure remaining has a planar exterior surface, wherein the conductive material filling the openings and spaces in the patterned polymeric material becomes features such as fine lines, patterns, and connectors which are surrounded by the polymeric material. The polymeric material may be left in place as an insulator or removed, leaving the conductive features on the substrate.
摘要:
Slurry is provided to the surface of the polishing pad by pumping the slurry up through a central port, or by dripping the slurry down onto the surface of the polishing pad from a slurry feed tube. A slurry wiper, which may have one or more flexible members, sweeps the slurry evenly and thinly across the polishing pad. A control system coordinates the distribution of slurry to the polishing pad with the motion of the carrier head.
摘要:
Disclosed is a method of chem-mech polishing an electronic component substrate. The method includes the following steps;obtaining a substrate having at least two features thereon or therein which have a different etch rate with respect to a particular etchant; andcontacting the substrate with a polishing pad while contacting the substrate with a slurry containing the etchant wherein the slurry includes abrasive particles, a transition metal chelated salt and a solvent for the salt.The chem-mech polishing causes the at least two features to be substantially coplanar. Also disclosed is the chem-mech polishing slurry.
摘要:
Patterned conductive lines are formed simultaneously with stud via connections through an insulation layer to previously formed underlying patterned conductive lines in multilevel VLSI chip technology. A first planarized layer of insulation is deposited over a first level of patterned conductive material to which contacts are to be selectively established. The first layer then is covered by an etch stop material. Contact holes are defined in the etch stop material at locations where stud connectors are required. The first layer of insulation is not etched at this time.Next, a second planarized layer of insulation, is deposited over the etch stop material. The second layer insulation, in turn, is etched by photolithography down to the etch stop material to define desired wiring channels, some of which will be in alignment with the previously formed contact holes in the etch stop material. In those locations where the contact holes are exposed, the etching is continued into the first layer of insulation to uncover the underlying first level of patterned conductive material.The channels and via holes are overfilled with metallization. The excess metallization is removed by etching or by chem-mech (chemical-mechanical) polishing.
摘要:
A desired cache size in a disk drive is established, and no reordering algorithm is performed on commands in the cache until the desired size is reached. An optimal subset size is also established. Then, an optimization algorithm is performed on all commands in the cache, with only the commands in the optimal subset being output for execution. The cache is refilled to the desired size, and the process is repeated.