Abstract:
Fabrication of a circuit structure is facilitated, in which a first exposure of a multi-layer structure is performed using a first mask, which defines positioning of at least one edge of an element to be formed above a substrate of the multi-layer structure. A second exposure of the multi-layer structure is performed using a second mask, which defines positioning of at least one other edge of the element. At least some material of the multi-layer structure is removed using, at least in part, the defined positioning of the at least one edge and the at least one other edges of the element, to form the element above the substrate. In some examples, multiple elements are formed, the multiple elements being hardmask elements to facilitate an etch process to etch a substrate material.
Abstract:
A mask is disclosed which includes a plurality of first phase shift regions disposed on a first side of the mask, and a plurality of second phase shift regions disposed on a second side of the mask. The first phase shift regions and second phase shift regions may be alternating phase shift regions in which phase shift of the first phase shift regions is out of phase, for instance by 180 degrees, from phase shift of the second phase shift regions. A method for forming the mask, and a semiconductor device fabrication method using the mask is also disclosed.
Abstract:
Methods for identification and partial re-routing of selected areas (e.g., including critical areas) in a layout of an IC design and the resulting device are disclosed. Embodiments include comparing design data of an IC device against criteria of manufacturing processes to manufacture the IC device; identifying in the design data a layout area based, at least in part, on proximity of metal segments, interconnecting segments, or a combination thereof in the layout area; performing partial re-routing in the layout area to substantially meet the criteria, wherein at least one interconnecting element is shifted or extended; and integrating the partial re-routing into the design data for use in the manufacturing processes.
Abstract:
A metrology pattern layout for a circuit structure is provided, the metrology pattern layout including a plurality of quadrants, in which quadrants a first wafer measurement pattern, a second wafer measurement pattern, a reticle registration pattern, and a reticle measurement pattern may be arranged to facilitate correlation of reticle metrology data with wafer metrology data. The reticle registration pattern may further include one or more outermost structural elements designed to protect other structural elements within the reticle measurement pattern from being modified in an optical proximity correction process. A method of optical proximity correction process is provided, in which a reticle measurement pattern may be obtained and classified to add or modify a rule set of the optical proximity correction process.
Abstract:
Fabrication of through-substrate via (TSV) structures is facilitated by: forming at least one stress buffer within a substrate; forming a through-substrate via contact within the substrate, wherein the through-substrate via structure and the stress buffer(s) are disposed adjacent to or in contact with each other; and where the stress buffer(s) includes a configuration or is disposed at a location relative to the through-substrate via conductor, at least in part, according to whether the TSV structure is an isolated TSV structure, a chained TSV structure, or an arrayed TSV structure, to customize stress alleviation by the stress buffer(s) about the through-substrate via conductor based, at least in part, on the type of TSV structure.
Abstract:
The present disclosure relates to semiconductor structures and, more particularly, to gap fill void and connection structures and methods of manufacture. The structure includes: a gate structure comprising source and drain regions; a gate contact in direct contact and overlapping the gate structure; and source and drain contacts directly connecting to the source and drain regions, respectively.
Abstract:
Methods of calibrating an OPC model using converged results of CD measurements from at least two locations along a substrate profile of a 1D, 2D, or critical area structure are provided. Embodiments include calibrating an OPC model for a structure to be formed in a substrate; simulating a CD of the structure at at least two locations along a substrate profile of the structure using the OPC model; comparing the simulated CD of the structure at each location against a corresponding measured CD; recalibrating the OPC model based on the comparing of each simulated CD against the corresponding measured CD; repeating the steps of simulating, comparing, and recalibrating until comparing at a first of the at least two locations converges to a first criteria and comparing at each other of the at least two locations converges to a corresponding criteria; and forming the structure using the recalibrated OPC model.
Abstract:
A method of forming dummy structures and an overlay mark protection zone over an active layer zone based on the shape of an overlay mark and the resulting device are provided. Embodiments include determining a size and a shape of an overlay mark; determining a size and a shape of an overlay mark protection zone based on the shape of the overlay mark; determining a shape of a plurality of dummy structures based on the shape of the overlay mark; determining a size and a shape of an active layer zone based on the size and the shape of the overlay mark and the plurality of dummy structures; forming the active layer zone in an active layer of a semiconductor substrate; forming the overlay mark and the plurality of dummy structures over the active layer zone in a poly layer of the semiconductor substrate; and planarizing the poly layer.
Abstract:
Methodologies and an apparatus for enabling OPC models to account for errors in the mask are disclosed. Embodiments include: determining a patterning layer of a circuit design; estimating a penetration ratio indicating a mask corner rounding error of a fabricated mask for forming the patterning layer in a fabricated circuit; and determining, by a processor, a compensation metric for optical proximity correction of the circuit design based on the penetration ratio.
Abstract:
A method and apparatus for an efficient optical proximity correction (OPC) repair flow is disclosed. Embodiments may include receiving an input data stream of an integrated circuit (IC) design layout, performing one or more iterations of an OPC step and a layout polishing step on the input data stream, and performing a smart enhancement step if an output of a last iteration of the OPC step fails to satisfy one or more layout criteria and if a number of the one or more iterations satisfies a threshold value. Additional embodiments may include performing a pattern insertion process cross-linked with the OPC step, the pattern insertion process being a base optical rule check (ORC) process.