71 technical terms and definitions
osat, outsourced semiconductor assembly and test, industry
OSAT (Outsourced Semiconductor Assembly and Test) Overview OSATs are third-party companies that provide semiconductor packaging (assembly) and testing services for fabless chip…
over-etch, plasma etch selectivity, etch endpoint detection, via etch process, semiconductor etching
Over-Etch in Semiconductor Plasma Etching is the deliberate extension of etch time beyond nominal endpoint to ensure complete target-layer removal across all die and wafer…
lithography overlay, overlay error, on-product overlay, alignment error, scanner overlay, edge placement error, epe, high-order overlay, dbo overlay, metrology, lithography
Lithography overlay is the vector positioning accuracy with which a newly patterned semiconductor device layer is aligned relative to an existing reference layer on the wafer…
registration, lithography, control, alignment, overlay error, on-product overlay, high-order overlay
Lithography overlay is the vector positioning accuracy with which a newly patterned semiconductor device layer is aligned relative to an existing reference layer on the wafer…
wafer alignment marks, registration accuracy, overlay metrology, higher order corrections, overlay, lithography
Lithography overlay is the vector positioning accuracy with which a newly patterned semiconductor device layer is aligned relative to an existing reference layer on the wafer…
overlay, lithography overlay error, on-product overlay, scanner alignment error, inter-field overlay, intra-field overlay, edge placement error, metrology, lithography
Lithography overlay is the vector positioning accuracy with which a newly patterned semiconductor device layer is aligned relative to an existing reference layer on the wafer…
overlay control, alignment accuracy, overlay metrology, overlay improvement
Overlay Error Budget Management is the systematic allocation and control of alignment errors across lithography, etch, deposition, and CMP processes to maintain total overlay…
metrology, interfield overlay, intrafield overlay, lens distortion, per-exposure correction, non-correctable residual, advanced process control, APC, tool matching
An overlay fingerprint is the systematic, repeatable pattern an overlay error map forms across a wafer or across exposure fields — decomposed into named components like…
high-order overlay, metrology, overlay correction
High-Order Overlay characterizes overlay errors beyond simple X-Y translation — measuring rotation, magnification, skew, and higher-order distortions that affect layer-to-layer…
image based overlay IBO, diffraction based overlay DBO, overlay control correction, overlay budget allocation
Overlay metrology measures the in-plane registration vector between a newly patterned lithography layer and a reference layer already on the wafer. A tool observes dedicated…
lithography overlay mark registration, image based overlay IBO, diffraction based overlay DBO, tool induced shift TIS, sub nanometer overlay error budget
Overlay metrology measures the in-plane registration vector between a newly patterned lithography layer and a reference layer already on the wafer. A tool observes dedicated…
overlay error, lithography overlay, overlay measurement, alignment error litho
Overlay metrology measures the in-plane registration vector between a newly patterned lithography layer and a reference layer already on the wafer. A tool observes dedicated…
overlay metrology sampling plan optimization prediction, overlay metrology sampling, metrology sampling plan, sampling plan optimization, overlay metrology
Overlay Metrology Sampling Plan Optimization Prediction with Machine Learning Introduction & Motivation Overlay Metrology Sampling Plan Optimization Prediction with Machine…
overlay metrology target asymmetry bias prediction, overlay metrology target, metrology target asymmetry, target asymmetry bias, asymmetry bias prediction
Overlay Metrology Target Asymmetry Bias Prediction with Machine Learning Introduction & Motivation Overlay Metrology Target Asymmetry Bias Prediction with Machine Learning…
overlay metrology target design optimization machine learning, overlay metrology, target design optimization, overlay metrology target design optimization, metrology target
Overlay Metrology Target Design Optimization with Machine Learning Introduction & Motivation Overlay Metrology Target Design Optimization with Machine Learning addresses a central…
metrology, overlay budget, scanner contribution, process contribution, metrology uncertainty, root sum square RSS, yield cliff, edge placement error, advanced node overlay tolerance
The overlay process window is the maximum registration error two patterned layers can tolerate while the device still functions correctly — the hard numerical tolerance that…
wafer processing predicting cmp planarization uniformity for oxide layers, wafer processing predicting, processing predicting cmp, predicting cmp planarization, uniformity oxide layers
Wafer Processing: Predicting CMP planarization uniformity for oxide layers Introduction & Motivation Wafer Processing: Predicting CMP planarization uniformity for oxide layers…
cvd oxide deposition, silicon dioxide deposition, sio2 deposition, deposited silicon oxide, cvd silicon oxide, silane oxide cvd, oxide film deposition, oxide deposition method, semiconductor oxide deposition, cvd sio2, dielectric oxide deposition
CVD oxide deposition forms a silicon–oxygen-based solid on a wafer from vapor-phase precursors rather than consuming the underlying silicon by thermal oxidation. The deposited…
oxide-semiconductor band alignment prediction, oxide-semiconductor band alignment, band alignment prediction, oxide-semiconductor band, band alignment, alignment prediction
Oxide-Semiconductor Band Alignment Prediction with Machine Learning Introduction & Motivation Oxide-Semiconductor Band Alignment Prediction with Machine Learning addresses…
advanced packaging
Oxide-to-Oxide Bonding is the dielectric component of hybrid bonding where two SiO₂ surfaces are directly bonded through molecular forces — requiring extreme surface smoothness (<…
wafer inspection, defect inspection, brightfield darkfield, sem review
Optical inspection is the high-throughput, non-destructive imaging of wafers, masks, packages, and assemblies to find defects and process excursions. Brightfield systems collect…