摘要:
A wafer property is controlled by a semiconductor processing tool using data collected from an in situ sensor. Initially, data relating to the wafer property is collected by the in situ sensor during a process executed according to a wafer recipe parameters. Subsequently, the process may be adjusted by modifying the recipe parameters according to comparisons between the data collected by the in situ sensor relating to the wafer property and the results predicted by a process model used to predict wafer outputs. A subsequent process utilizing the data collected by the in situ sensor is then executed. In at least some embodiments of the present invention the data may be used for run-to-run control on subsequent wafers processed by the tool.
摘要:
Processing parameters of at least one plate-like object(20), e.g. a semiconductor device or wafer, or a flat panel display, in a processing tool (1) are adjusted depending on which processing device (2a) out of at least one set of processing devices (2a, 2b) has been used for the semiconductor device (20) in a preceding step. This is provided by generating a virtual or physical token (10a), which connects the semiconductor device (20) identification with the processing device (2a, 2b) identification. This enables a compensation of tool-dependent effects in previous processing of a single device. An example is chemical mechanical polishing prior to lithography, where alignment marks can be deteriorated differently between CMP-apparatus. The amount of compensation is detected and evaluated by means of metrology tools, which - depending on the sequence of the metrology step relative to the processing step to be adjusted - either feed-forward or feed-backward their results to the processing tool (1). The yield of semiconductor device production is advantageously increased.
摘要:
An automated manufacture line comprises a host controller device (3; 7f; 7d) which sets individual control conditions and a plurality of automatic working devices (10-22; 23, 24) which are connected to the host controller device and perform their automatic works. Each automatic working device includes a carry portion (11 a, 17a, 18a) for carrying in an object to be processed from the upper stream side of the line and carrying out it to the lower stream side of the line, an input portion (10i, 11i, 17i, 18i) capable of inputting work data concerning the object handled by its own automatic working device, and a controller (11g, 17g, 18g, 23d, 24e) for adjusting a work parameter of its own automatic working device on the basis of the work data inputted from the input portion or work data transmitted from another automatic working device on the upper stream side of the line, outputting the work data to another automatic working device provided on the lower stream side of the line, driving the carry portion in response to an object carry-out request signal from another automatic working device provided on the lower stream side of the line to carry out the object to that automatic working device, and outputting an object carry-out request signal to another automatic working device positioned on the upper stream side of its own automatic working device.
摘要:
A method of controlling surface non-uniformity of a wafer in a polishing operation includes (a) providing a model for a wafer polishing that defines a plurality of regions on a wafer and identifies a wafer material removal rate in a polishing step of a polishing process for each of the regions, wherein the polishing process comprises a plurality of polishing steps, (b) polishing a wafer using a first polishing recipe based upon an incoming wafer thickness profile, (c) determining a wafer thickness profile for the post-polished wafer of step (b), and (d) calculating an updated polishing recipe based upon the wafer thickness profile of step (c) and the model of step (a) to maintain a target wafer thickness profile. The model defines the effect of tool state on polishing effectiveness. The method can be used to provide feedback to a plurality of platen stations.
摘要:
The control device (CTL) according to the invention for a production module (PM) has a data memory (MEM) for storing operational settings (LBE) of production modules (PM, PMA) and restrictions (LCR, ICR, ECR) which must be complied with by at least some of the operational settings. A settings management module (EM) is used to determine the external operational setting (XA 1 ) of an adjacent production module (PMA) on which a local operational setting (X i ) of the production module (PM) is dependent on the basis of a common restriction (ICR). An optimization module (OPT) is also provided and has a local assessment function (LBF), which assesses the local operational setting (X i ), and a further assessment function (EBF) which assesses non-compliance with the common restriction (ICR). The optimization module (OPT) is set up to determine an optimized local operational setting (OLBE, X i ) by optimizing the local assessment function (LBF), reading in the external operational setting (XA 1 ) determined and optimizing the further assessment function (EBF) on the basis of the external operational setting (XA 1 ) which has been read in. A control module (SM) is also used to set the optimized local operational setting (OLBE) in the production module (PM).
摘要:
A method, apparatus and medium of conditioning a planarizing surface includes installing a wafer to be polished in a chemical mechanical polishing (CMP) apparatus (100) having a polishing pad (102) and a conditioning disk (108), polishing the wafer under a first set of pad conditioning parameters selected to maintain wafer material removal rates with preselected minimum and maximum removal rates, determining a wafer material removal rate occurring during the polishing step, calculating updated pad conditioning parameters to maintain wafer material removal rates within the maximum and minimum removal rates, and conditioning the polishing pad using the updated pad conditioning parameters, wherein the updated pad conditioning parameters are calculated by a pad wear and conditioning model that predicts the wafer material removal rate of the polishing pad based upon the rotational speed and direction of the conditioning disk.
摘要:
A system, methods and mediums are provided for dynamic adjustment of sampling plans in connection with a wafer (or other device) to be measured. A sampling plan provides information on specific measure points within a die, a die being the section on the wafer that will eventually become a single chip after processing. There are specified points within the die that are candidates for measuring. The stored die map information may be retrieved and translated to determine the available points for measurement on the wafer. The invention adjusts the frequency and/or spatial resolution of measurements when one or more events occur that are likely to indicate an internal or external change affecting the manufacturing process or results. The increase in measurements and possible corresponding decrease in processing occur on an as-needed basis. The dynamic metrology plan adjusts the spatial resolution of sampling within-wafer by adding, subtracting or replacing candidate points from the sampling plan, in response to certain events which suggest that additional or different measurements of the wafer may be desirable. Where there are provided a number of candidate points in the die map in the area to which points are to be added, substracted, or replaced, the system can select among the points. Further, the invention may be used in connection with adjusting the frequency of wafer-to-wafer measurements.
摘要:
A method, apparatus and medium of conditioning a planarizing surface includes installing a wafer to be polished in a chemical mechanical polishing (CMP) apparatus (100) having a polishing pad (1080) and a conditioning disk (1030), polishing the wafer under a first set of pad conditioning parameters selected to maintain wafer material removal rates with preselected minimum and maximum removal rates, determining a wafer material removal rate occurring during the polishing step, calculating update pad conditioning parameters to maintain wafer material removal rates within the maximum and minimum removal rates, and conditioning the polishing pad (1080) using the update pad conditioning parameters, wherein the update pad conditioning parameters are calculated using a pad wear and conditioning model that predicts the wafer material removal rate of the polishing pad based upon conditioning parameters, such as the conditioning down force and rotational speed of the conditioning disk.