Abstract:
In a multilevel microelectronic integrated circuit, air comprises permanent line level dielectric and ultra low-K materials are via level dielectric. The air is supplied to line level subsequent to removal of sacrificial material by clean thermal decomposition and assisted diffusion of byproducts through porosities in the IC structure. Optionally, air is also included within porosities in the via level dielectric. By incorporating air to the extent produced in the invention, intralevel and interlevel dielectric values are minimized.
Abstract:
The present invention includes a method of determining an alignment between a substrate and a template spaced-apart from the substrate and having a distance defined therebetween, the substrate having a first pattern disposed thereon and the template having a second pattern disposed thereon, the method including, sensing the first and the second pattern, with the distance being established such that the first and the second pattern form a desired moiré pattern when the template and the substrate are in a desired spatial relationship.
Abstract:
A method for fabricating a low k, ultra-low k, and extreme-low k multilayer interconnect structure on a substrate in which the interconnect line features are separated laterally by a dielectric with vertically oriented nano-scale voids formed by perforating it using sub-optical lithography patterning and etching techniques and closing off the tops of the perforations by a dielectric deposition step. The lines are supported either by solid or patterned dielectric features underneath. The method avoids the issues associated with the formation of air gaps after the fabrication of conductor patterns and those associated with the integration of conventional low k, ultra-low k and extreme low k dielectrics which have porosity present before the formation of the interconnect patterns.
Abstract:
Described are high precision gap and orientation measurement methods between a template and a substrate used in imprint lithography processes. Gap and orientation measurement methods presented here include uses of broad-band light based measuring techniques.
Abstract:
The process of producing a dual damascene structure used for the interconnect architecture of semiconductor chips. More specifically the use of imprint lithography to fabricate dual damascene structures in a dielectric and the fabrication of dual damascene structured molds.
Abstract:
A system of determining and correcting alignment during imprint lithography process is described. During an imprint lithographic process the template may be aligned with the substrate by the use of alignment marks disposed on both the template and substrate. The alignment may be determined and corrected for before the layer is processed.
Abstract:
A method of determining and correcting alignment during imprint lithography process is described. During an imprint lithographic process the template may be aligned with the substrate by the use of alignment marks disposed on both the template and substrate. The alignment may be determined and corrected for before the layer is processed.
Abstract:
A method for forming an interconnect structure with nanocolumnar intermetal dielectric is described involving the construction of an interconnect structure using a solid dielectric, and introducing a regular array of vertically aligned nanoscale pores through stencil formation and etching to form a hole array and subsequently pinching off the tops of the hole array with a cap dielectric. Variations of the method and means to construct a multilevel nanocolumnar interconnect structure are also described.
Abstract:
Described are imprint lithography templates, methods of forming and using the templates, and a template holder device. An imprint lithography template may include a body with a plurality of recesses on a surface of the body. The body may be of a material that is substantially transparent to activating light. At least a portion of the plurality of recesses may define features having a feature size less than about 250 nm. A template may be formed by obtaining a material that is substantially transparent to activating light and forming a plurality or recesses on a surface of the template. In some embodiments, a template may further include at least one alignment mark. In some embodiments, a template may further include a gap sensing area. An imprint lithography template may be used to form an imprinted layer in a light curable liquid disposed on a substrate. During use, the template may be disposed within a template holder. The template holder may include a body with an opening configured to receive the template, a support plate, and at least one piezo actuator coupled to the body. The piezo actuator may be configured to alter a physical dimension of the template during use.
Abstract:
Semiconductor structure includes an insulator layer having at least one interconnect feature and at least one gap formed in the insulator layer spanning more than a minimum spacing of interconnects.