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MIDAS Features for Ceramic Green
Tape, Substrate
and FPC Inspection
Several critical factors are involved in the inspection of
Green Tape, hybrid substrates and FPC
circuits as compared to more standardized industrial inspections. Through years of industry experience, MIDAS has identified and incorporated the following features into our software for the benefit of our users.
Via Inspection
100% inspection to verify presence, location, and formation of thousands of vias in each layer. This capability allows monitoring of the punch process as well as via fill steps to ensure proper operation.
100% Conductive Line Defect Detection
Defect detection and reporting of all opens, shorts, voids, excesses, and contamination of printed patterns is provided. An unlimited number of tolerance windows can be set to maximize throughput and minimize potential "false
calls".
Print Registration/Free
Placement
Registration verification in both global and local modes is conducted on each inspection operation to ensure that tolerances are not exceeded. Local registration is especially useful in detecting and predicting production issues such as screen
and sheet stretch. Translation of x, y, and theta inspection data is generated in order to adjust
process set up parameters.
Ease of Operation
No in depth computer knowledge is needed to operate a MIDAS System. Templates are
automatically converted from CAD
designs. Defect detection tolerances are
set by per feature and can be customized by the operator. Set up and learn time (prior to inspection) for a typical
circuit is under 15 minutes for a trained operator.
Instant Part Template Switching
Template data files reside in
memory in the Vision Processor for instant access in situations where multiple layers or different part configurations must be inspected rapidly.
Print Density Measurement
Line weight calculations are available via pixel count windows encompassing the entire part or selected windows. Resistor pattern area coverage can be measured and defined in targeting operations.
Measurement Command
Measurement Windows Option allows full measurement commands for
windows placed throughout the vision
scan area. Measurements locate part
features.
Parts Marker
A Part
Marker can be interfaced to the System
to allow automatic identification of
"bad" circuits on a multi-up substrate.
The marker may be integrated directly into the MIDAS hardware, or (for in-line applications) may require additional hardware.
Statistical Process Control (SPC) Data
All defect data files are currently saved to disk for later retrieval and input to a customer driven SPC database. Defect files are stored in ASCII format and are easily ported to customer applications. SPC is an essential part of any closed loop control production cycle.
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