Comprehensive simulation and analysis of optical lithography from EUV to multi-patterning, including aerial image formation, OPC, resist modeling, metrology, and process optimization for sub-7nm semiconductor manufacturing
EUV wavelength (13.5nm), numerical aperture, partial coherence, Hopkins diffraction model, and aerial image formation
193nm/248nm ArF/KrF exposure systems, partial coherence imaging, sigma inner/outer settings, and source optimization
PAG diffusion, acid catalysis, dissolution kinetics, Dill ABC parameters, and resist profile evolution
Thin film interference effects, standing waves in resist, anti-reflective coating optimization, and BARC tuning
Model-based OPC, rule-based corrections, sub-resolution assist features (SRAF), edge placement error minimization
Attenuated PSM, alternating aperture PSM, phase conflict detection, and destructive interference enhancement
Off-axis illumination (annular, quadrupole, dipole), source-mask optimization, and polarization control
LELE, SADP, SAQP process flows, overlay budget decomposition, stitching errors, and color assignment
Bossung curves, process window analysis, depth of focus calculation, and exposure latitude optimization
3σ LER measurement, power spectral density analysis, correlation length extraction, and shot noise modeling
Wafer-scale CD mapping, CDU budget breakdown, systematic vs random components, and scanner matching
Chromatic aberration, coherence length impact, spectral bandwidth tuning, and speckle reduction
AIM marks, box-in-box targets, overlay error sources, Zernike decomposition, and APC modeling
Aerial vs wafer defects, defect classification algorithms, nuisance filtering, and critical defect capture
Pellicle defocus effects, transmission loss modeling, thermal expansion, and particle protection
Interactive OPC rule tuning, SRAF insertion optimization, mask model calibration, and verification
DOF, exposure latitude, MEF, ILS, NILS calculations, and process window optimization
Defect pareto analysis, DOE statistical analysis, 5 Whys root cause, and FMEA risk assessment
LER/LWR extraction, CD distribution analysis, Cpk calculation, and measurement uncertainty
Overlay error tree decomposition, APC modeling, scanner matching optimization, and budget allocation
CD-SEM vs scatterometry vs AFM correlation, tool-to-tool matching, and golden reference
GDS fracturing, jobdeck generation, dose assignment, shot count optimization, and MRC verification
End-to-end lithography simulation: aerial image + resist model + development with full physics
Wave optics, Fourier optics, Hopkins equations, Abbe/Rayleigh criteria, and imaging fundamentals
Scanner architecture, reticle stages, wafer alignment systems, TIS measurement, and tool specifications
CD-SEM, scatterometry, overlay measurement, focus monitors, and advanced metrology methods
DOE methodologies, SPC charting, defect density reduction, and continuous improvement frameworks