摘要:
Embodiments of a polishing article for processing a substrate are provided. In one embodiment, a polishing article for processing a substrate comprises a fabric layer having a conductive layer disposed thereover. The conductive layer has an exposed surface adapted to polish a substrate. The fabric layer may be woven or non-woven. The conductive layer may be comprised of a soft material and, in one embodiment, the exposed surface may be planar.
摘要:
Compositions and methods for processing a substrate having a conductive material layer disposed thereon are provided. In one embodiment, a method of electrochemically processing a substrate using a conductive polishing article is provided. The method includes disposing a substrate having a conductive material layer formed thereon in a process apparatus comprising a cathode coupled to the conductive polishing article and an anode, wherein the substrate is in electrical contact with the anode, supplying a polishing composition comprising a cathodic inhibitor and an anodic inhibitor, forming a protective film on the cathode to prevent corrosion of the cathode, and polishing the substrate. In another embodiment, a composition for processing a substrate having a conductive material layer disposed thereon is provided which composition includes a corrosion inhibitor selected from the group of an amino acid based inhibitor, a polymeric based corrosion inhibitor, an oxidizer, a chelating inhibitor or combinations thereof.
摘要:
A method and apparatus for removing conductive material from a substrate surface are provided. In one embodiment, a method is provided for electrochemical mechanical polishing of a substrate. A substrate comprising dielectric feature definitions, a barrier material disposed on the feature definitions, and a bulk conductive material in an amount sufficient to fill the feature definitions is provided. The substrate is exposed to an electrolyte solution. A passivation layer is formed on the conductive material. The passivation strength of the passivation layer is increased by polishing the substrate with a first voltage for a first time period. The substrate is polished with a second voltage higher than the first voltage for a second time period. Conductive material is removed from at least a portion of the substrate surface by anodic dissolution.
摘要:
An ECMP method that suppresses hillock formation on a substrate includes the step of buffing a substrate before a two-step electrochemical mechanical polishing process. The buffing step prevents hillocks from forming around the features of the substrate and does not interfere with the protrusion formation. The buffing step includes contacting the substrate with a polishing pad and rotating the substrate and the polishing pad in opposite directions.
摘要:
Embodiments of a polishing article for polishing a substrate are provided. In one embodiment, the polishing article includes an annular upper layer made of a dielectric material coupled to an annular lower layer made of a conductive material, and an annular subpad sandwiched between the annular upper layer and the annular lower layer forming a replaceable assembly therewith.
摘要:
Embodiments of a polishing article for polishing a substrate are provided. In one embodiment, the polishing article includes a ring-shaped upper layer having a polishing surface, and a conductive layer coupled to the upper layer and forming a replaceable assembly therewith.
摘要:
Embodiments of the invention generally provide a method and apparatus for processing a substrate in an electrochemical mechanical planarizing system. In one embodiment, a cell for polishing a substrate includes a processing pad disposed on a top surface of a platen assembly. A plurality of conductive elements are arranged in a spaced-apart relation across the upper planarizing surface and adapted to bias the substrate relative to an electrode disposed between the pad and the platen assembly. A plurality of passages are formed through the platen assembly between the top surface and a plenum defined within the platen assembly. In another embodiment, a system is provided having a bulk processing cell and a residual processing cell. The residual processing cell includes a biased conductive planarizing surface. In further embodiments, the conductive element is protected from attack by process chemistries.
摘要:
A method and apparatus for local polishing and deposition control in a process cell is generally provided. In one embodiment, an apparatus for electrochemically processing a substrate is provided that selectively polishes discrete conductive portions of a substrate by controlling an electrical bias profile across a processing area, thereby controlling processing rates between two or more conductive portions of the substrate.
摘要:
Embodiments of a conditioning head for in-situ conditioning and/or cleaning a processing pad of a CMP, ECMP, or other processing system are provided. In one embodiment, the conditioning head includes a brush disposed in a central cavity. A cleaning fluid is provided through the central cavity of the conditioning head to a processing pad. The brush spins and moves laterally across the surface of the processing pad. The cleaning solution dispensed through the conditioning head dissolves by-products of the processing operation while the brush gently wipes the processing pad. A lip of the conditioning head retains the cleaning fluid and cleaning waste, thereby minimizing contamination of the area outside of the conditioning head. The cleaning waste is removed from the processing pad via passages formed near the outer periphery of the conditioning head.
摘要:
Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a composition is provided for removing at least a conductive material from a substrate surface including sulfuric acid or derivative, phosphoric acid or derivative, a first chelating agent including an organic salt, a pH adjusting agent to provide a pH between about 2 and about 10 and a solvent. The composition may further include a second chelating agent. The composition may be used in a single step or two step electrochemical mechanical planarization process. The polishing compositions and methods described herein improve the effective removal rate of materials from the substrate surface, such as tungsten, with a reduction in planarization type defects.