Process Control
Plasma-Therm’s internally developed process control software surpasses industry standards in repeatability and uniformity. Real-time endpoint monitoring of etch and deposition processes leads to reliable results.
EndpointWorks™
In the past, separate applications controlled various endpoint technologies. With Plasma-Therm’s newly developed EndpointWorks™, a single application addresses multiple endpoint sensor inputs. EndpointWorks™ is fully integrated with the process module control software.
EndpointWorks™ is capable of receiving inputs from many different sensors and then uses a “decision” feature to analyze the data to determine a highly reproducible endpoint.
The following sensor systems are available with EndpointWorks™:
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Laser Interferometry:
Using the well-known principles of interferometry coupled with a solid
state ccd camera for laser spot location, etch depths are measured using interference patterns reflected from the substrate.
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OES:
Film layers are detected using light emitted from the plasma. Spectral changes occur when etch of the target layers are achieved.
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OEI:
Target film thickness is tracked and measured via an optical emission.
By optically tracking film thickness or etch depth in real time,
EndpointWorks™ can counteract variables and produce accurate
results every time.
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System Parameters:
EndpointWorks™ is capable of being programmed with various system parameters to detect changes triggered at endpoint.
Examples: throttle valve position, matching capacitor positions.
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Custom Inputs:
EndpointWorks™ is capable of customer specific external inputs.
Examples: RGA, ellipsometer.
SpectraWorks
SpectraWorks is a legacy OES endpoint control system.
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SpectraWorks is currently available at version 5.1
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SpectraWorks is upgradeable to EndpointWorks™ with recipe transferability.
For more information , please contact us at information@plasmatherm.com or at +1.727.577.4999 |