OAI
650 S Flat Panel Exposure
What it is
General reference — not yet source-verifiedFlat panel exposure systems are lithography tools that transfer a patterned image from a mask into photoresist on a substrate. Flat panel exposure systems are used where the workpiece is larger than the wafer formats common in integrated circuit processing. Flat panel exposure systems belong to the photolithography stage of microfabrication, where patterned resist defines later etch, deposition, or lift off steps.
How it works
General reference — not yet source-verifiedExposure systems of this class project or contact a mask pattern onto photoresist-coated substrates using a high intensity optical source. The exposure step changes the solubility of the resist in the illuminated regions according to the resist tone. Alignment and mask holding hardware position the pattern relative to the substrate before the exposure dose is delivered.
Where it fits in the process flow
General reference — not yet source-verifiedLithography exposure tools are used after substrate preparation and photoresist coating. Lithography exposure tools are used before resist development. The developed resist pattern then serves as a temporary stencil for subsequent etch, plating, implantation, deposition, or lift off operations, depending on the device flow.
Applications
The OAI 650 S was originally for flat panel display substrates. The OAI 650 S also accepts smaller mask formats through interchangeable mask holders.[1]
Why won't it start?
Documented failure modes, common issues, and field considerations.
- Will need a new mirror
What do the numbers mean?
Wafer handling4
Optics & imaging3
- Variety of mask holders for smaller sizes, including 4” and 6” rounds, 5” square[1]
Dimensions & facilities1
Configuration & options11
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 650 S Flat Panel Exposure 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 650 S Flat Panel Exposure are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 650 S Flat Panel Exposure 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 650 S Flat Panel Exposure are not on record.
Answerable by: an engineer who operated it or OEM installation records
The process node or technology generation of the 650 S Flat Panel Exposure is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the 650 S Flat Panel Exposure are on record.
Answerable by: an OEM parts catalog or a service engineer
Sources & citations
Sources (2)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]inventory listing
Last updated Oct 18, 2026.
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