摘要:
A semiconductor wafer including an underlying layer including an insulating film having at least one recess therein and a metallic material layer formed over a top surface of the underlying layer and filling the recess, on a semiconductor substrate, is subjected to a polishing treatment while supplying a basic CMP slurry containing metal ions on the semiconductor wafer to at least partially remove the metallic material layer. Then, an organic acid which chelates the metal ions is added to the basic CMP slurry, and polishing is conducted, using the organic acid-added CMP slurry, until a surface of the insulating film is exposed.
摘要:
Provided are an aqueous dispersion for chemical mechanical polishing, which planarizes a surface to be polished and has high shelf stability, a chemical mechanical polishing process excellent in selectivity when surfaces of different materials are polished, and a production process of a semiconductor device. A first aqueous dispersion contains a water-soluble quaternary ammonium salt, an inorganic acid salt, abrasive grains and an aqueous medium. A second aqueous dispersion contains at least a water-soluble quaternary ammonium salt, another basic organic compound other than the water-soluble quaternary ammonium salt, an inorganic acid salt, a water-soluble polymer, abrasive grains and an aqueous medium. The second aqueous dispersion is composed of a first aqueous dispersion material (I) obtained by mixing a water-soluble quaternary ammonium salt and an inorganic acid salt into an aqueous medium, and a second aqueous dispersion material (II) obtained by mixing a water-soluble polymer and another basic organic compound other than the water-soluble quaternary ammonium salt into an aqueous medium. Abrasive grains are contained in at least one of the aqueous dispersion materials.
摘要:
A semiconductor wafer including an underlying layer including an insulating film having at least one recess therein and a metallic material layer formed over a top surface of the underlying layer and filling the recess, on a semiconductor substrate, is subjected to a polishing treatment while supplying a basic CMP slurry containing metal ions on the semiconductor wafer to at least partially remove the metallic material layer. Then, an organic acid which chelates the metal ions is added to the basic CMP slurry, and polishing is conducted, using the organic acid-added CMP slurry, until a surface of the insulating film is exposed.
摘要:
A processing end point detection method detects a timing of a processing end point (e.g., polishing stop, changing of polishing conditions) by calculating a characteristic value of a surface of a workpiece (an object of polishing) such as a substrate. This method includes producing a spectral waveform indicating a relationship between reflection intensities and wavelengths at a processing end point, with use of a reference workpiece or simulation calculation, based on the spectral waveform, selecting wavelengths of a local maximum value and a local minimum value of the reflection intensities, calculating the characteristic value with respect to a surface, to be processed, from reflection intensities at the selected wavelengths, setting a distinctive point of time variation of the characteristic value at a processing end point of the workpiece as the processing end point, and detecting the processing end point of the workpiece by detecting the distinctive point during processing of the workpiece.
摘要:
A polishing apparatus includes a substrate holder configured to hold and rotate a substrate, a press pad configured to press a polishing tape having a polishing surface against a bevel portion of the substrate held by the substrate holder, and a feeding mechanism configured to cause the polishing tape to travel in its longitudinal direction. The press pad includes a hard member having a pressing surface for pressing the bevel portion of the substrate through the polishing tape, and at least one elastic member for pressing the hard member against the bevel portion of the substrate through the belt-shaped polishing tool.
摘要:
In a method of manufacturing a semiconductor device for planarizing a silicon oxide film with chemical mechanical polishing using a silicon film formed on a semiconductor substrate as a stopper film, a surface modification film for hydrophilizing the surface of the silicon film is formed on an upper layer of the polysilicon film, and slurry for the chemical mechanical polishing contains cerium oxide particles, a surface active agent, and resin particles having a cationic or anionic functional group.
摘要:
A chemical mechanical polishing method comprises polishing an organic film using a slurry including polymer particles having a surface functional group and a water-soluble polymer.
摘要:
A method for manufacturing a semiconductor device is provided, which includes forming a coated film by coating a solution containing a solvent and an organic component above an insulating film located above a semiconductor substrate and having a recess, baking the coated film at a first temperature which does not accomplish cross-linking of the organic component to obtain an organic film precursor, polishing the organic film precursor using a first slurry containing first resin particles and a water-soluble polymer to planarize a surface of the organic film precursor, and polishing the organic film precursor where the surface is planarized using a second slurry containing second resin particles and a water-soluble polymer to leave the organic film precursor in the recess, thereby exposing the insulating film, an average particle diameter of the second resin particles being smaller than that of the first resin particles.
摘要:
There is disclosed a chemical mechanical polishing method of an organic film comprising forming the organic film above a semiconductor substrate, contacting the organic film formed above the semiconductor substrate with a polishing pad attached to a turntable, and dropping a slurry onto the polishing pad to polish the organic film, the slurry being selected from the group consisting of a first slurry and a second slurry, the first slurry comprising a resin particle having a functional group selected from the group consisting of an anionic functional group, a cationic functional group, an amphoteric functional group and a nonionic functional group, and having a primary particle diameter ranging from 0.05 to 5 μm, the first slurry having a pH ranging from 2 to 8, and the second slurry comprising a resin particle having a primary particle diameter ranging from 0.05 to 5 μm, and a surfactant having a hydrophilic moiety.
摘要:
There is disclosed a method of processing a substrate, which comprises applying a surfactant or a water soluble polymer agent onto a surface of a substrate to be processed, and sliding a circumferential portion of the substrate and a polishing member against each other to polish the circumferential portion of the substrate.