摘要:
An improved pad and process for polishing metal damascene structures on a semiconductor wafer. The process includes the steps of pressing the wafer against the surface of a polymer sheet in combination with an aqueous-based liquid that optionally contains sub-micron particles and providing a means for relative motion of wafer and polishing pad under pressure so that the moving pressurized contact results in planar removal of the surface of said wafer, wherein the polishing pad has a low elastic recovery when said load is removed, so that the mechanical response of the sheet is largely anelastic. The improved pad is characterized by a high energy dissipation coupled with a high pad stiffness. The pad exhibits a stable morphology that can be reproduced easily and consistently. The pad surface resists glazing, thereby requiring less frequent and less aggressive conditioning. The benefits of such a polishing pad are low dishing of metal features, low oxide erosion, reduced pad conditioning, longer pad life, high metal removal rates, good planarization, and lower defectivity (scratches and Light Point Defects).
摘要:
The present disclosure relates to a polishing pad including a pad structure having at least first and second polishing regions defined along a polishing surface of the pad structure. The first polishing region of the pad structure is less compressible than the second polishing region of the pad structure. The present disclosure also relates to a polish platen including a platen structure having at least first and second regions adapted for supporting a polishing pad. The first region of the platen structure is less compressible than the second region of the platen structure.
摘要:
A method for measuring the planarization efficiency of a planarization process and a device for use with the method are provided. The device may be a substrate having a set of isolated features, such as trenches or hills, with different widths. In the method, a removable layer of material is formed over the substrate. The substrate features form corresponding features in the removable layer with varying dimensions. A pre-planarization thickness of the removable layer of material is measured at each feature and at one or more of isolation areas. The removable layer of material is then planarized using a planarization process associated with one or more process parameters. A post-planarization thickness of the removable is measured at each feature and at one or more of the isolation regions. The planarization efficiency of the planarization process is then determined as a function of the dimensions of the substrate features or corresponding features in the removable layers and/or one or more process parameters. The determined planarization efficiency may be output by, for example, generating a graph of the planarization efficiency or using the planarization efficiency to change one or more parameters of the planarization process.
摘要:
A combined atomic force microscope and stylus profilometer adapted to measure critical dimensions on a surface. The stylus profilometer is placed at a first position sufficiently near an edge of a first feature and the atomic force microscope subsequently measures the distance from this first position to the edge. The stylus profilometer is then positioned at a second position sufficiently near an edge of a second feature, measuring the distance from the first position to the second position. The atomic force microscope then measures the distance from the second position to the edge of the second feature.
摘要:
A method of making a chemical-mechanical polishing slurry includes mixing a ferric salt oxidizer with a solution to produce a mixture with a dissolved ferric salt oxidizer, filtering the mixture to remove most preexisting particles therein that exceed a selected particle size, adding a suspension agent to the mixture, and adding abrasive particles to the mixture after filtering the mixture. Advantageously, when polishing occurs, scratching by the preexisting particles is dramatically reduced.
摘要:
A surface protective composition especially for use on automobiles is prepared which contains about 0.1 to 5% of a film forming fluorine containing polymer, 0 to 10% of micronized wax, a hydrocarbon solvent, an organosilicone compound, a surfactant and water.
摘要:
A furniture cleaning and polishing composition that provides protection against water. The composition contains an admixture of A) about 0.01 to 4% by weight of a water repelling fluorinated polymer; B) up to 15% mineral oil; C) about 3 to 25% hydrocarbon solvent; D) about 0.1 to 5% silicone oil; about 0.01 to 5% surfactant, and the remainder water.
摘要:
In a solid lavatory cleansing block containing a surfactant, a germicide agent or an oxidizing agent and fillers, the improvement which comprises said cleansing block having a polybutene compound in an amount from about 0.1 to 8% by weight of the composition to stabilize the bleaching agent, said polybutene compound of the formula: ##STR1## wherein n can be varied to give an average molecular weight of 320 to 2,300.
摘要:
The invention provides a method for producing a substantially planar surface overlying features of a semiconductor structure. The method comprises forming alternating layers of a hard polishing material and a soft polishing material over the features of the semiconductor structure, and then polishing the alternating layers to form a substantially planar surface over the features. The method takes advantage of the polish rates of the various materials used as alternating layers to enhance the planarization process.
摘要:
A passivating layer is deposited over an integrated circuit device, conventionally fabricated using silicidation, after which an insulating layer is deposited. The insulating layer is planarized and further polished to expose the passivating layer above the gate. The portion of the passivating layer above the gate is removed with little or no effect on the insulating layer or gate. A trench above one or both junctions (source or drain) is formed by removing insulation using the passivating layer as an etch stop, then removing a portion of the passivating layer above the junction with little or no effect on the junction or any isolation region present. The gate may be further silicided, and the opening above the gate and the trench above the junction may each be planarly filled with a low sheet resistance conductive material, forming contacts. The contact above the junction may be borderless.