摘要:
Wafer order is randomized in-situ by use of a separate wafer staging area and randomly shuffling wafers to and from this staging area to shuffle the processing order of the wafer lot. Positional data is captured for each wafer at both the send and receive ends of the process.
摘要:
Methods, systems, and computer program products for implementing product randomization and analysis in a manufacturing environment are provided. A method includes processing products for a plurality of lots, at process equipment, using a randomization technique for selecting each product in the lots. The method further including generating an operation identification record for each operation in the process recipe that includes mapping, for each operation, a slot identifier associated with a randomly selected product to a process variable identifier, a process tool, and the operation. The method also includes defining slot groupings using slot identifiers for a product carrier and identifying product yield patterns by analyzing historical yields for each of the slot groupings. The method also includes determining the frequency of occurrence of one or more product yield patterns for each operation in the process recipe by analyzing product yields from the operation identification records corresponding to the plurality of lots.
摘要:
Wafer order is randomized in-situ by use of a separate wafer staging area and randomly shuffling wafers to and from this staging area to shuffle the processing order of the wafer lot. Positional data is captured for each wafer at both the send and receive ends of the process.
摘要:
By coordinating a process regime of a process module for sample substrates used in a previously performed metrology process, an increased degree of measurement information may be obtained. For this purpose, the coordination may be based on a sampling ruleset related to the process module, wherein the previously selected sample substrates may be appropriately sequenced through the process module to increase the probability for complying with the associated sampling ruleset. Furthermore, the enhanced process coordination may be advantageously combined with randomization steps, thereby providing a “pseudo randomization,” in which sample substrates are intentionally positioned, while the remaining substrates may be randomized for decoupling related process steps.
摘要:
Disclosed are a method of managing a process and a process managing system in which a failure-generating process step can be quickly detected. The method of managing a process includes sequentially performing first to n-th (n is a natural number) process steps with respect to a plurality of wafers, the order that the plurality of wafers are processed in each of the n process steps are different from one another. Calculating characteristic parameter values for the plurality of wafers, calculating first to n-th relations that indicate relationships between the first to n-th process orders and the characteristic parameter values, performing a Fourier transform on the first to n-th relations so as to calculate first to n-th conversion relations, and determining the existence of patterns among the first to n-th relations using the first to n-th conversion relations.
摘要:
The present invention provides a method that includes determining a jeopardy count associated with at least one processing tool and selecting at least one wafer based upon the jeopardy count, the at least one wafer having been processed by the at least one processing tool.
摘要:
Wafer order is randomized in-situ by use of a separate wafer staging area and randomly shuffling wafers to and from this staging area to shuffle the processing order of the wafer lot. Positional data is captured for each wafer at both the send and receive ends of the process.
摘要:
Wafer order is randomized in-situ by use of a separate wafer staging area and randomly shuffling wafers to and from this staging area to shuffle the processing order of the wafer lot. Positional data is captured for each wafer at both the send and receive ends of the process.
摘要:
Methods, systems, and computer program products for implementing product randomization and analysis in a manufacturing environment are provided. A method includes processing products for a plurality of lots, at process equipment, using a randomization technique for selecting each product in the lots. The method further including generating an operation identification record for each operation in the process recipe that includes mapping, for each operation, a slot identifier associated with a randomly selected product to a process variable identifier, a process tool, and the operation. The method also includes defining slot groupings using slot identifiers for a product carrier and identifying product yield patterns by analyzing historical yields for each of the slot groupings. The method also includes determining the frequency of occurrence of one or more product yield patterns for each operation in the process recipe by analyzing product yields from the operation identification records corresponding to the plurality of lots.
摘要:
By coordinating a process regime of a process module for sample substrates used in a previously performed metrology process, an increased degree of measurement information may be obtained. For this purpose, the coordination may be based on a sampling ruleset related to the process module, wherein the previously selected sample substrates may be appropriately sequenced through the process module to increase the probability for complying with the associated sampling ruleset. Furthermore, the enhanced process coordination may be advantageously combined with randomization steps, thereby providing a “pseudo randomization,” in which sample substrates are intentionally positioned, while the remaining substrates may be randomized for decoupling related process steps.