KLA
2139 Brightfield
The KLA 2139 is a brightfield inspection system. The KLA 2139 is used for semiconductor wafer inspection. The KLA 2139 supports 6-inch and 8-inch wafers.[1][2]
What it is
General reference — not yet source-verifiedBrightfield inspection tools illuminate the wafer from below and collect reflected light to create high-contrast images of surface features, enabling the detection of pattern defects, particles, and other anomalies.
How it works
General reference — not yet source-verifiedBrightfield inspection relies on a microscope objective that directs light onto the wafer surface and captures the reflected light. The intensity of the reflected light varies with the topography and material properties of the wafer, producing an image that highlights deviations from the expected pattern.
The system scans the wafer in a step-and-repeat or continuous motion, capturing images at high magnification. An automated image processor compares each die image to a reference or to neighboring dice, flagging any differences that exceed a programmable threshold.
Where it fits in the process flow
General reference — not yet source-verifiedIn a semiconductor fab, brightfield inspection tools are part of the in-line metrology and inspection segment, providing feedback to process engineers for yield improvement and process control. The tool sits between the lithography track and subsequent deposition or etch equipment, or after any critical patterning step.
What do the numbers mean?
Power & electrical10
Wafer handling3
Control & software1
Configuration & options11
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
Not publicly documented
The following facts about the 2139 Brightfield are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 2139 Brightfield are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 2139 Brightfield are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the 2139 Brightfield are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the 2139 Brightfield are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 2139 Brightfield is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (8)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]Inventory photo
- [3]Inventory photo
- [4]Inventory photo
- [5]inventory listing
- [6]inventory listing
- [7]Equipment inventory listing
- [8]Equipment inventory listing
Last updated Oct 10, 2026.
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