摘要:
A method of forming a dual damascene metal interconnect for a semiconductor device. The method includes forming a layer of low-k dielectric, forming vias through the low-k dielectric layer, depositing a sacrificial layer, forming trenches through the sacrificial layer, filling the vias and trenches with metal, removing the sacrificial layer, then depositing an extremely low-k dielectric layer to fill between the trenches. The method allows the formation of an extremely low-k dielectric layer for the second level of the dual damascene structure while avoiding damage to that layer by such processes as trench etching and trench metal deposition. The method has the additional advantage of avoiding an etch stop layer between the via level dielectric and the trench level dielectric.
摘要:
An integrated circuit structure includes a semiconductor substrate; a through-semiconductor via (TSV) opening extending into the semiconductor substrate; and a TSV liner in the TSV opening. The TSV liner includes a sidewall portion on a sidewall of the TSV opening and a bottom portion at a bottom of the TSV opening. The bottom portion of the TSV liner has a bottom height greater than a middle thickness of the sidewall portion of the TSV liner.
摘要:
A semiconductor structure is provided. In one embodiment, a bond pad is formed above one or more underlying layers of a substrate. A plurality of dummy plugs are spaced around the bond pad, the plurality of dummy plugs substantially vertically traversing the one or more underlying layers, wherein the plurality of dummy plugs anchor at least two of the underlying layers together to achieve improved mechanical strength.
摘要:
A method of forming a semiconductor structure includes providing a substrate; forming a low-k dielectric layer over the substrate; embedding a conductive wiring into the low-k dielectric layer; and thermal soaking the conductive wiring in a carbon-containing silane-based chemical to form a barrier layer on the conductive wiring. A lining barrier layer is formed in the opening for embedding the conductive wiring. The lining barrier layer may comprise same materials as the barrier layer, and the lining barrier layer may be recessed before forming the barrier layer and may contain a metal that can be silicided.
摘要:
A method of forming a semiconductor structure includes providing a substrate; forming a low-k dielectric layer over the substrate; embedding a conductive wiring into the low-k dielectric layer; and thermal soaking the conductive wiring in a carbon-containing silane-based chemical to form a barrier layer on the conductive wiring. A lining barrier layer is formed in the opening for embedding the conductive wiring. The lining barrier layer may comprise same materials as the barrier layer, and the lining barrier layer may be recessed before forming the barrier layer and may contain a metal that can be silicided.
摘要:
A semiconductor structure and methods for forming the same are provided. The semiconductor structure includes a dielectric layer; a chemical mechanical polish (CMP) stop layer on the dielectric layer; a conductive wiring in the dielectric layer; and a metal cap over the conductive wiring.
摘要:
An integrated circuit includes an etch stop layer over a substrate; a UV blocker layer on the etch stop layer, wherein the UV blocker layer has a high extinction coefficient; and a low-k dielectric layer on the UV blocker layer.
摘要:
A semiconductor method of manufacturing involving low-k dielectrics is provided. The method includes depositing a hydrocarbon of the general composition CxHy on the surface of a low-k dielectric. The hydrocarbon layer is deposited by reacting a precursor material, preferably C2H4 or (CH3)2CHC6H6CH3, using a PECVD process. In accordance with embodiments of this invention, carbon diffuses into the low-k dielectric, thereby reducing low-k dielectric damage caused by plasma processing or etching. Other embodiments comprise a semiconductor device having a low-k dielectric, wherein the low-k dielectric has carbon-adjusted dielectric region adjacent a trench sidewall and a bulk dielectric region. In preferred embodiments, the carbon-adjusted dielectric region has a carbon concentration not more than about 5% less than in the bulk dielectric region.
摘要翻译:提供涉及低k电介质的半导体制造方法。 该方法包括在低k电介质的表面上沉积一般组合物C x H y Y y的烃。 烃层通过使前体材料,优选C 2 H 4 H 3或(CH 3)3 H 2, CHC 6 6 H 3 CH 3,使用PECVD法。 根据本发明的实施例,碳扩散到低k电介质中,由此降低由等离子体处理或蚀刻引起的低k电介质损伤。 其他实施例包括具有低k电介质的半导体器件,其中低k电介质具有邻近沟槽侧壁和大块电介质区域的碳调节介电区域。 在优选的实施方案中,碳调节的电介质区域的碳浓度比体电介质区域的碳浓度小约不超过约5%。
摘要:
A new method is provided for the creation of dummy plugs in support of creating a robust structure of overlying interconnect traces. A pattern of holes for dummy plugs is etched stopping at an etch stop layer, the etch stop layer is then removed from the bottom of the holes that have been created whereby this removal is extended into an underlying layer of insulating material. The pattern of holes is filled with a metal, preferably copper, excess metal is removed by methods of Chemical Mechanical Polishing, leaving in place a pattern of metal plugs that penetrate through layers of insulation material and through layers of etch stop material and into an underlying layer of semiconductor material.
摘要:
A method of coating a low dielectric constant material layer wherein the wafer surface is pre-wetted using a solvent to prevent or reduce coating defects is described. A semiconductor substrate is provided wherein a top surface of the semiconductor substrate may have surface defects. A solvent is coated overlying the top surface of the semiconductor substrate. A low dielectric constant material layer is coated overlying the solvent wherein the solvent covers the surface defects thereby preventing defects in the low dielectric constant material layer.