Abstract:
Embodiments of the invention generally provide a method of forming an air gap between conductive elements of a semiconductor device, wherein the air gap has a dielectric constant of approximately 1. The air gap may generally be formed by depositing a sacrificial material between the respective conductive elements, depositing a porous layer over the conductive elements and the sacrificial material, and then stripping the sacrificial material out of the space between the respective conductive elements through the porous layer, which leaves an air gap between the respective conductive elements. The sacrificial material may be, for example, a polymerized alpha terpinene layer, the porous layer may be, for example, a porous carbon doped oxide layer, and the stripping process may utilize a UV based curing process, for example.
Abstract:
A method and semiconductor device. In the method, at least one partial via (26) is etched in a stacked structure and a border (32) is formed about the at least one partial via (26). The method further includes performing thick wiring using selective etching while continuing via etching to at least one etch stop layer (22).
Abstract:
The present invention provides gas layer formation material selected from the group consisting of acenaphthylene homopolymers; acenaphthylene copolymers; poly(arylene ether); polyamide; B-staged multifunctional acrylate/methacrylate; crosslinked styrene divinyl benzene polymers; and copolymers of styrene and divinyl benzene with maleimide or bis-maleimides. The formed gas layers are used in microchips and multichip modules.
Abstract:
In forming a layer of a semiconductor wafer (100), a dielectric layer is deposited on the semiconductor wafer. The dielectric layer (208) includes material having a low dielectric constant. Recessed (210) and non-recessed (211) areas are formed in the dielectric layer. A metal layer is deposited on the dielectric layer to fill the recessed areas and cover the non-recessed areas. The metal layer is then electropolished to remove the metal layer covering the non-recessed areas while maintaining the metal layer in the recessed areas.
Abstract:
A method of fabricating an integrated circuit with a dual dielectric structure and utilizes a dual damascene process to fabricate metal interconnection layers. The dual dielectric structure consists of a first insulating layer of conventional dielectric material, and a second insulating layer of a second dielectric material with a low dielectric constant (low-k dielectric material). The first dielectric material is used in regions of the integrated circuit where the superior mechanical properties of conventional dielectric materials will result in maintaining the reliability and mechanical properties of the integrated circuit. The second dielectric material is used in regions of the integrated circuit where the low dielectric constant will result in improved speed of the integrated circuit and reduced electrical coupling between conductors in the integrated circuit. The fabrication of the dual dielectric structure is integrated with a dual damascene metallization process.
Abstract:
A method for manufacturing a semiconductor device having an interlayer insulating film of, e.g., fluorine-added carbon by a simple dual damascene method. An insulating film, e.g., an SiO2 film (3) is formed on a substrate (2), a via hole (31) is made in the SiO2 film (3) by etching, and an upper insulating film, e.g., a CF film (4) is formed over the SiO2 film (3). If the CF film is formed by means of a plasma created from a film forming material having a bad buriability, e.g., C6F6 gas, the CF film is prevented from being buried in the via hole (31) and the CF film (4) is formed over the SiO2 film (3). A trench (41) is made in the CF film (4) by etching, enabling easy formation of a dual damascene having the trench (41) and the via hole (31) integrally continuous with the trench (41).
Abstract:
There is provided a semiconductor device, comprising a substrate (101) that includes an integrated circuit region (1); first and second interlayer insulation films (116, 117, 118) formed above the substrate, and a reinforcing structure comprising a main-wall part (2) and a sub-wall part (3) which are formed in the first and second interlayer insulation films, wherein the main-wall part (2) surrounds the integrated circuit region in a periphery thereof and the sub-wall part is provided apart from the main wall part in a corner region of the semiconductor device and is located between the integrated circuit region and a first bend section of the main-wall part. Both the main wall part and the sub-wall part are formed by metal-filled trenches (131, 132) in the first and second interlayer insulation films.