Filmetrics F20 resist and dielectric thickness comparison
Filmetrics · Engineering measurement and characterization
- Purpose
- RDL process review needs to separate photoresist/dielectric thickness variation from line-shape abnormalities.
- Technical approach
- Filmetrics F20 models spectral reflectance to determine thickness/index, with reflectance, transmittance and optical-property measurements.
- Scope of use
- Use optically modelable films; validate wavelengths, thickness coverage and measurement locations for the selected configuration and stack.
- Limitations and open questions
These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitationsCoverage depends on configuration and stack. Do not borrow small-spot or automated-mapping specifications from other models; thickness results do not directly identify RDL shorts.
What to prepareBLNKK suggests preparing materials, layer order, nominal thicknesses, optical constants, accessible measurement areas and reference thickness data.
Confirm with the supplierConfirm wavelengths, spot/fixture, model parameters and standards; discuss fit quality, repeatability and configuration using actual stacks.
- Public evidence
- The named KLA page documents photoresist, process-film and dielectric applications and distinguishes wavelength configurations.
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Related engineering problems
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BLNKK organizes information from public sources. A company profile does not imply a documented solution. Applicability still needs confirmation against your samples and engineering conditions.