3,802 technical terms and definitions
ccp chamber iadf, ccp ion angular distribution function, capacitively coupled plasma ion angular distribution, ccp ion angle spread, ccp iadf dielectric etch, dual frequency ccp iadf, ccp wafer ion angle
The ion angular distribution function (IADF) in a capacitively coupled plasma (CCP) etch chamber is a broad polar velocity distribution ( at mTorr) defined by a prominent…
ccp chamber iedf, ccp ion energy distribution function, capacitively coupled plasma ion energy distribution, ccp ion energy spectrum, ccp iedf dielectric etch, dual frequency ccp iedf, ccp wafer ion energy
The ion energy distribution function (IEDF) in a capacitively coupled plasma (CCP) etch chamber is a bimodal energy spectrum defined by two prominent voltage peaks ( eV at MHz)…
plasma etch chamber, dry etch chamber, semiconductor etch chamber, etch reactor, etch chamber components, etch chamber design, etch chamber hardware, etch chamber maintenance, etch chamber contamination, etch chamber pressure, etch chamber vacuum
An etch chamber is best understood not as the fixed vessel a recipe runs inside but as a consumable that the process is steadily rebuilding: every plasma-facing surface is being…
plasma chamber conditioning, chamber wall conditioning, first wafer effect etch, etch chamber seasoning recipe, chamber seasoning dummy wafers, etch chamber wet clean, seasoning ozone etch, chamber conditioning plasma
Etch chamber seasoning governs whether the first production wafer after a clean or idle period meets spec or gets scrapped—a 40,000 consequence per wafer at advanced nodes.…
Etch Chamber Seasoning and First-Wafer Effects is the practice of conditioning plasma etch chamber surfaces through controlled pre-production processing to establish stable…
plasma etch chemistry, reactive ion etching gases, fluorocarbon etch, chlorine bromine etch
Etch Chemistry is the engineered selection and control of reactive gases, plasma conditions, and byproduct pathways used to remove target materials from a wafer with precise rate…
wafer etch depth budget, etch depth range budget, across wafer depth budget
Etch Depth Uniformity Budget An etch depth uniformity budget checks both spatial depth variation and distance from the required depth limits. It defines the sampling plan and…
drie etch chamber, deep reactive ion etching chamber, deep silicon etch chamber, bosch process chamber, cryogenic drie chamber, high aspect ratio silicon etch reactor, tsv drie chamber, mems drie chamber, drie reactor hardware
A DRIE chamber etches silicon structures tens to hundreds of micrometers deep by alternating two plasma chemistries inside the same ICP reactor: an SF etch step that removes 1–3…
etch wafer edge exclusion budget, etch edge coverage budget, etch edge qualification boundary
Etch Edge Exclusion Budget An etch edge exclusion budget defines the wafer region covered by a process or measurement claim and the evidence needed to use the region near its…
etch first-wafer effect budget, etch lot start wafer budget, etch opening wafer conditioning budget
Etch First Wafer Effect Budget An etch first wafer effect budget accounts for the difference in etch behaviour between the opening wafers of a lot and the steady state reached…
icp chamber iadf, etch ion angular distribution function, ion angular distribution function etch, ion angle distribution icp, iadf plasma etch, icp ion angle spread, wafer ion angular distribution
The ion angular distribution function in an ICP etch chamber is set by one ratio — ion thermal energy divided by sheath voltage — and at production conditions (5 mTorr Ar, 200 V…
icp chamber iedf, etch ion energy distribution function, ion energy distribution function etch, ion energy distribution icp, iedf plasma etch, icp ion energy spectrum, wafer ion energy distribution
The ion energy distribution function in an ICP etch chamber is controlled by one independent knob — the bias electrode — that sets the peak ion energy without changing the ion…
etch measurement acceptance margin, etch uncertainty decision rule, etch dimensional guard band
Etch Metrology Guard Band An etch metrology guard band separates a product tolerance limit from a measurement acceptance limit under a stated decision rule. It makes room for…
etch wafer site sampling, etch measurement sampling hierarchy, etch sample coverage plan
Etch Metrology Sampling Plan An etch metrology sampling plan specifies which wafers, locations, features and repeated measurements will support a defined process decision. It…
plasma etch, RIE, reactive ion etching, etch simulation, DRIE
Semiconductor Manufacturing Process: Etch Modeling 1. Introduction Etch modeling is one of the most complex and critical areas in semiconductor fabrication simulation. As device…
selective etching, selective chemical etch, GAA channel release, sacrificial layer removal
Chemical etching. uses reaction chemistry chosen to remove a target material faster than adjacent masks, stop layers, channels, spacers, liners, or substrates. Selectivity is…
plasma etch reactive ion, anisotropic isotropic etch, etch selectivity chemistry, atomic layer etching
Semiconductor Etch Processes are the subtractive patterning techniques that selectively remove material from the wafer according to photoresist or hard mask patterns — ranging…
sidewall angle, profile uniformity, bowed profile, tapered profile, undercut profile, aspect ratio dependent etching, RIE lag
Etch Profile Etch profile is the cross-sectional shape of an etched feature. It includes depth, width along the opening, sidewall shape and bottom condition. Two features can…
icp ccp, plasma etch icp ccp, icp plasma etching, ccp plasma etching, inductively coupled plasma, capacitively coupled plasma, etch rate, etching rate, etch speed, material removal rate, plasma etch rate, etch rate plasma etching
Plasma etching and reactor physics govern the dry, anisotropic material removal processes essential for patterning nanoscale semiconductor features. Driven by radio-frequency…
etch sidewall redeposition budget, etch fence residue budget, etch transferred material budget
Etch Redeposition Budget An etch redeposition budget defines the transferred material that an integration can tolerate and the evidence needed to assess its location, geometry…
rie etch chamber, reactive ion etching chamber, reactive ion etch reactor, parallel plate rie chamber, semiconductor rie chamber, rf plasma rie, rie chamber design, rie chamber hardware, rie process chamber
A reactive-ion-etch chamber is a single-frequency parallel-plate reactor where one 13.56 MHz generator simultaneously sustains the discharge and accelerates ions toward the wafer…
etch chemistry, plasma selectivity, selectivity ratio, oxide nitride selectivity, mask selectivity, fluorocarbon polymer, overetch budget, ARDE, aspect ratio dependent etching, fluorocarbon etch, atomic layer etch, cryogenic etch selectivity
Etch selectivity is quoted as a ratio of two removal rates, which makes it sound like a ratio of two chemistries. In a fluorocarbon plasma it is neither. A steady-state…
process selectivity control, sin etch stop deposition, multi-layer etch stop design, contact etch landing
Etch Stop Layers and Process Integration — Thin dielectric films strategically placed within the device stack to provide precise etch termination control, enabling reliable…
etch wafer temperature budget, etch temperature history budget, etch thermal exposure budget
Etch Thermal Budget An etch thermal budget defines the allowed wafer temperature history during an etch sequence and the evidence used to show that the exposed materials remain…
etch rate uniformity, center to edge etch, plasma uniformity control, etch chamber tuning
Etch Uniformity Across the Wafer is the plasma etch engineering discipline focused on achieving identical etch rate, etch depth, profile angle, and selectivity at every point…
wet chemical etch, HF oxide etch, KOH silicon etch, TMAH etch
Wet etching. removes material through liquid-phase chemical reaction, commonly by immersion, puddle, spray, or single-wafer dispense. It can provide high throughput, excellent…
simulation
Etching Simulation is the TCAD computational modeling of material removal processes — including wet chemical etching, reactive ion etching (RIE), atomic layer etching (ALE)…
european chips act, what is european chips act
An EU semiconductor policy framework. The European Chips Act is the European Union’s framework for strengthening semiconductor research, innovation, manufacturing capability…
advanced packaging
Eutectic Bonding is a wafer-level bonding technique that uses a eutectic alloy system to join two surfaces at a temperature significantly below the melting point of either…
packaging
Eutectic die attach is the die-attach process using eutectic alloy composition that melts and solidifies at a single temperature to form uniform metallurgical joints - it is…
what is euv, euv lithography, extreme ultraviolet, extreme ultraviolet lithography, 13.5 nm, asml euv, euv stochastics
Extreme Ultraviolet lithography operates at a soft X-ray wavelength of 13.5nm where optical diffraction limits are dramatically reduced compared to 193nm immersion, yet patterning…
actinic inspection, mask blank, defect detection, 13.5nm, mask qualification
EUV Actinic Mask Blank Inspection A buried defect inside an EUV mask's multilayer mirror stack can sit completely invisible to a conventional optical or electron-beam inspection…
collector mirror, hydrogen radical cleaning, tin debris, stannane, reflectivity, source efficiency
EUV Collector Mirror and Hydrogen Radical Debris Cleaning The EUV collector mirror sits directly in the line of fire of the tin plasma that generates the light it's supposed…
euv lithography overlay and defects, euv lithography overlay, lithography overlay defects, euv lithography, lithography overlay, overlay defects
EUV Lithography Overlay and Defects Introduction & Motivation EUV Lithography Overlay and Defects addresses a central problem in manufacturing process control and overlay-accuracy…
dual pod, reticle handling, vacuum load lock, mask transport, contamination control
EUV Dual-Pod Reticle Vacuum Handling EUV masks spend their time inside the scanner in vacuum, not ordinary air, because EUV light at 13.5nm is absorbed almost completely by air…
flare budget euv lithography, mirror roughness euv scatter
EUV flare is the stray light that reaches the wafer from everywhere a mirror isn't supposed to send it — scattered off sub-nanometer surface roughness and residual particles on…
high-na euv, high-na euv lithography, lithography resolution, projection optics
High-NA EUV is the next EUV scanner generation: it keeps the 13.5 nm wavelength but raises numerical aperture from 0.33 to 0.55, giving chipmakers sharper imaging for 2 nm-class…
illuminator optics, facet mirror, beam homogenization, pupil fill, uniformity, scanner optics
EUV Illuminator Optics and Facet-Mirror Design Before EUV light ever reaches the mask, it has to pass through the illuminator — a subsystem of mirrors whose job is to take…
Active Learning for EUV Lithography Active Learning for EUV Lithography Introduction Active Learning for EUV Lithography is an engineering workflow for high-resolution pattern…
Anomaly Detection for EUV Lithography Anomaly Detection for EUV Lithography Introduction Anomaly Detection for EUV Lithography is an engineering workflow for high-resolution…
extreme ultraviolet, euv technology
Extreme ultraviolet lithography is the patterning technology that makes the smallest logic and memory features possible by using 13.5 nm light instead of the 193 nm light used…
Bayesian Parameter Estimation for EUV Lithography Bayesian Parameter Estimation for EUV Lithography Introduction Bayesian Parameter Estimation for EUV Lithography is…
Causal Process Modeling for EUV Lithography Causal Process Modeling for EUV Lithography Introduction Causal Process Modeling for EUV Lithography is an engineering workflow…
Chamber Matching for EUV Lithography Chamber Matching for EUV Lithography Introduction Chamber Matching for EUV Lithography is an engineering workflow for high-resolution pattern…
Closed-Loop Yield Learning for EUV Lithography Closed-Loop Yield Learning for EUV Lithography Introduction Closed-Loop Yield Learning for EUV Lithography is an engineering…
Contamination Monitoring for EUV Lithography Contamination Monitoring for EUV Lithography Introduction Contamination Monitoring for EUV Lithography is an engineering workflow…
Cost and Cycle-Time Optimization for EUV Lithography Cost and Cycle-Time Optimization for EUV Lithography Introduction Cost and Cycle-Time Optimization for EUV Lithography is…
Critical Dimension Prediction for EUV Lithography Critical Dimension Prediction for EUV Lithography Introduction Critical Dimension Prediction for EUV Lithography is…
Defect Excursion Detection for EUV Lithography Defect Excursion Detection for EUV Lithography Introduction Defect Excursion Detection for EUV Lithography is an engineering…
euv mask defect, euv pellicle stochastic defect, euv particle contamination, euv printing defect control, euv
Extreme Ultraviolet lithography operates at a soft X-ray wavelength of 13.5nm where optical diffraction limits are dramatically reduced compared to 193nm immersion, yet patterning…