摘要:
Embodiments of a ball assembly are provided. In one embodiment, a ball assembly includes a housing, a ball, a conductive adapter and a contact element. The housing has an annular seat extending into a first end of an interior passage. The conductive adapter is coupled to a second end of the housing. The contact element electrically couples the adapter and the ball with is retained in the housing between seat and the adapter.
摘要:
A method for performing electrochemical-mechanical planarization (EMP) of a workpiece surface (6) including a pattern of electrical conductors is disclosed comprising using a chemical-mechanical polishing (CMP)-type apparatus (20) having an abrasive of non-abrasive polishing pad (12,13) with an oxidizer-free, electrolytically conductive, abrasive or non-abrasive fluid from a conduit (8) and applying a time-varying anodic potential through terminal (W) to the workpiece surface (6) for controllably dissolving the material, e.g. metal, of the electrical conductors while simultaneously applying mechanical polishing action to the surface. The method advantageously reduces or substantially eliminates undesirable dishing characteristic of conventional CMP planarization processing utilizing chemical oxidizer agent(s). Apparatus for performing EMP are also disclosed.
摘要:
Embodiments of a ball assembly are provided. In one embodiment, a ball assembly includes a housing, a ball, a conductive adapter and a contact element. The housing has an annular seat extending into a first end of an interior passage. The conductive adapter is coupled to a second end of the housing. The contact element electrically couples the adapter and the ball with is retained in the housing between seat and the adapter.
摘要:
In advanced electrolytic polish (AEP) method, a metal wafer (10) acts as an anodic electrodes and another metal plate (65) is used as a cathodic electrode. A voltage differential is applied to the anode and cathode under a predetermined anodic dissolution current density. This causes a reaction that provides a planarized surface on the metal wafers. Additives are included in the electrolyte solution (55) which adsorb onto the wafer surface urging a higher removal rate at higher spots and a lower removal rate at lower spots. Also, in another embodiment of the present invention is a pulsed-electrolytic process (260) in which positive and negative potentials are applied to the anodic and cathodic electrodes alternately, further encouraging surface planarization. AEP can be used either as a first step followed by a mechanical polish or a second step between initial CMP polish and a third step mechanical polish. The present invention may also be added as a last step of copper electroplating process and so may be used in the manufacture of all kinds of patterned metal wafers.
摘要:
The disclosure relates to a polishing pad (100) for a chemical mechanical polishing apparatus. The polishing pad has a polishing surface (102) formed with a plurality of circular concentric grooves (104). The polishing surface of the pad may include multiple regions (150,152,154,156) with grooves (144) of different widths and spacings.
摘要:
A method for performing electrochemical-mechanical planarization (EMP) of a workpiece surface (6) including a pattern of electrical conductors is disclosed comprising using a chemical-mechanical polishing (CMP)-type apparatus (20) having an abrasive or non-abrasive polishing pad (12,13) with an oxidizer-free, electrolytically conductive, abrasive or non-abrasive fluid from a conduit (8) and applying a time-varying anodic potential through terminal (W) to the workpiece surface (6) for controllably dissolving the material, e.g. metal, of the electrical conductors while simultaneously applying mechanical polishing action to the surface. The method advantageously reduces or substantially eliminates undesirable dishing characteristic of conventional CMP planarization processing utilizing chemical oxidizer agent(s). Apparatus for performing EMP are also disclosed.
摘要:
The disclosure relates to a polishing pad (100) for a chemical mechanical polishing apparatus. The polishing pad has a polishing surface (102) formed with a plurality of circular concentric grooves (104). The polishing surface of the pad may include multiple regions (150,152,154,156) with grooves (144) of different widths and spacings.
摘要:
An article of manufacture and apparatus are provided for planarizing a substrate surface. In one aspect, an article of manufacture is provided for polishing a substrate including polishing article comprising a body having at least a partially conductive surface adapted to polish the substrate and a mounting surface. A plurality of perforations may be formed in the polishing article for flow of material therethrough. In another aspect, a polishing article for polishing a substrate includes a body having a polishing surface and a conductive element disposed therein. The conductive element may have a contact surface that extends beyond a plane defined by the polishing surface. The polishing surface may have one or more pockets formed therein. The conductive element may be disposed in each of the polishing pockets.
摘要:
In advanced electrolytic polish (AEP) method, a metal wafer (10) acts as an anodic electrodes and another metal plate (65) is used as a cathodic electrode. A voltage differential is applied to the anode and cathode under a predetermined anodic dissolution current density. This causes a reaction that provides a planarized surface on the metal wafers. Additives are included in the electrolyte solution (55) which adsorb onto the wafer surface urging a higher removal rate at higher spots and a lower removal rate at lower spots. Also, in another embodiment of the present invention is a pulsed-electrolytic process (260) in which positive and negative potentials are applied to the anodic and cathodic electrodes alternately, further encouraging surface planarization. AEP can be used either as a first step followed by a mechanical polish or a second step between initial CMP polish and a third step mechanical polish. The present invention may also be added as a last step of copper electroplating process and so may be used in the manufacture of all kinds of patterned metal wafers.