Methods for discretized processing and process sequence integration of regions of a substrate
The present invention provides methods and systems for discretized, combinatorial processing of regions of a substrate such as for the discovery, implementation, optimization, and qualification of new materials, processes, and process sequence integration schemes used in integrated circuit fabrication. A substrate having an array of differentially processed regions thereon is processed by delivering materials to or modifying regions of the substrate.
1. A method comprising:
combinatorially processing a plurality of regions on a substrate in a first line comprising a combinatorial line, the plurality of regions having locally uniform processing, wherein the combinatorial processing includes varying at least one of a material, a unit process, a processing condition, or a process sequence, each of the plurality of regions defined by a processing cell enclosing a corresponding region, wherein a bottom surface of a side of the processing cell provides a seal against the surface of the substrate and wherein the processing cell includes a sealed upper surface coupled to side surfaces of the side to isolate processing regions defined above one of the regions from an external environment;
removing the substrate from the first line; and
placing the substrate in a second line comprising a non-combinatorial manufacturing line to process the substrate in a non-combinatorial substantially uniform manner across the plurality of regions and areas between the plurality of regions.
2. The method of claim 1 , wherein the plurality of regions are site isolated so that the combinatorial processing in one region does not diffuse into nearby regions.
3. The method of claim 1 , wherein processing the substrate in a non-combinatorial substantially uniform manner comprises a wet technique selected from a cleaning process, a surface modification process, and an electrochemical process.
4. The method of claim 1 , wherein the combinatorial and substantially uniform processing produces a structure on the substrate, and wherein the structure is selected from a group consisting of a via, hole, trench, lines, or interconnect, and the combinatorial processing at least partially fills the structure.
5. The method of claim 1 , wherein processing the substrate in the non-combinatorial substantially uniform manner across the plurality of regions comprises a process selected from the group consisting of: depositing, patterning, etching, cleaning, planarizing, implanting, and treating.
6. The method of claim 5 , wherein the process is a blanket deposition process that deposits a layer over the plurality of regions and areas between the regions.
7. The method of claim 1 , wherein the combinatorial and substantially uniform processing produces a device on the substrate, wherein the device is a discrete electronic component capable of performing a specific function.
8. The method of claim 1 , wherein the substrate is processed in a substantially uniform manner prior to the combinatorial processing of at least one of the plurality of the regions.
9. The method of claim 1 , wherein the combinatorial processing of the plurality of regions is performed by one of serially, rapid-serial, or parallel combinatorial processing.
10. The method of claim 1 , wherein the non-combinatorial substantially uniform processing of the substrate forms one of a blanket substrate, structures, partial structures, devices, or partial devices defined for processing in the plurality of region.
11. The method of claim 1 , further comprising:
evaluating the processing after one of the combinatorial processing or after the non-combinatorial substantially uniform processing.
12. A method for combinatorially processing a substrate, comprising:
processing the substrate non-combinatorially in a first line comprising a manufacturing line;
removing the substrate from the first line;
placing the substrate in a second line comprising a combinatorial line to combinatorially process separate regions of the substrate, the separate regions having locally uniform processing, each of the separate regions defined by a processing cell enclosing a corresponding region, wherein a bottom surface of a side of the processing cell provides a seal against the surface of the substrate and wherein a top surface of the processing cell extends between side surfaces of the side to isolate a processing region defined above the corresponding separate regions from an external environment; and
returning the substrate to a next process in the first line comprising the manufacturing line thereby exposing the combinatorially processed regions to substantially uniform processing conditions.
13. The method of claim 12 , wherein the same substrate is used in both the combinatorial processing and the manufacturing line.
14. The method of claim 12 , wherein combinatorial processing includes,
varying a process parameter selected from a group consisting of materials, processing conditions, unit processes, process sequences, process sequence integration, and process sequence conditions.
15. The method of claim 12 , wherein the combinatorial processing forms at least one array of differentially processed regions on the substrate.
16. The method of claim 12 , wherein the separate regions are isolated from nearby regions during processing.
17. The method of claim 15 , wherein the array of differentially processed regions are spaced apart from nearby regions.
18. The method of claim 12 , wherein the separate regions include one of multiple structures, partial structures, devices or partial devices and wherein the separate regions are tested for a desired property of one of the structure or device after one of the combinatorial processing or after the processing in the manufacturing line.
19. The method of claim 12 , wherein the full substrate conventional process comprises a dry process deposition technique selected from a plasma-based technique or a gas phase technique.
20. The method of claim 1 , wherein processing fluids are both delivered and removed through the processing cell when performing the combinatorial processing.
21. The method of claim 20 , wherein the sealed upper surface is a septum through which processing fluids are delivered to the one of the regions.
22. The method of claim 12 , wherein processing fluids are both delivered and removed through the processing cell when performing the combinatorial processing.
23. The method of claim 22 , wherein the top surface is a septum through which processing fluids are delivered to the corresponding separate regions.