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Glossary

3,822 technical terms and definitions

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Ion Implantation Wafer Removal and Transfer

ion implantation step 08 wafer removal and transfer, wafer removal and safe transfer

Wafer Removal and Safe Transfer: Step 8 — Post-Implant Handling After implantation is complete and the wafer has cooled, it must be carefully removed from the implantation chamber…

Ion Implantation Wafer Temperature Management

ion implantation step 06 wafer temperature management, wafer temperature management

Wafer Temperature Management: Step 6 — Thermal Control During Implantation As ions are implanted into the wafer, they deposit kinetic energy, heating the wafer locally. Step 6…

Ion Milling

metrology

Ion milling is a material removal technique that uses a broad beam of energetic ions (typically argon) to sputter material from a specimen surface — producing artifact-free…

Ion Implantation 1970s Confront Channeling Crystal Axis

ion implant 1970s axial planar channeling unwanted deep tails, implantation doping 1970s wafer tilt seven degrees twist suppression, ion implant 1970s critical angle dechanneling random equivalent

Step 3 — Confront Channeling: When Crystal Symmetry Opens Unobstructed Corridors That Distort the Implant Profile 1. When the Atomic Lattice Becomes a Transparent Highway When…

Ion Implantation 1970s Measure Precision Threshold Voltage

ion implant 1970s tightening 1962 mosfet threshold equation, implantation doping 1970s delta vth dose over cox metrology, ion implant 1970s narrow threshold distribution tightening

Step 8 — Measure the Precision Improvement Over Diffusion Directly: Tightening the 1962 Threshold-Voltage Equation 1. The Direct Callback: Adding an Electrostatically Metered Term…

Ionized PVD (Ipvd)

ionized pvd, ipvd, hipims, high power impulse magnetron sputtering, self-ionized plasma, hollow cathode magnetron, pvd, ionised pvd, ionized physical vapor deposition, iPVD barrier seed, magnetron sputtering ionized, directional PVD

Ionized physical vapour deposition exists because a neutral sputtered atom cannot be steered. It leaves the target with a direction fixed at the moment of ejection — the Thompson…

IoT

semiconductor, ultra-low, power, wireless, sensor, battery, lifetime

IoT Semiconductor Ultra-Low Power is semiconductor devices consuming microwatts enabling battery operation for years in wireless sensors and edge devices — power is critical…

Ip Core

semiconductor IP core, design IP, soft IP, hard IP, SoC IP licensing, ip integration, ip reuse

IP core. is a reusable, pre-designed block licensed or transferred for integration into an integrated circuit. Processor cores, GPUs and NPUs, coherent interconnects, DDR and HBM…

Ip Reuse via Chiplets

ip, business

IP Reuse via Chiplets is the design strategy of creating reusable semiconductor intellectual property blocks as physical chiplets that can be incorporated into multiple products…

Isfet

ion-sensitive field-effect transistor, isfet biosensor, ion torrent sequencing chip, cmos ph sensor

An ISFET is an ordinary MOSFET with its gate metal stripped away and replaced by an ion-sensitive membrane sitting directly in a fluid, so the transistor's threshold voltage…

Iso 26262 Functional Safety Asil

safety island chip design, hardware diagnostic coverage, safe state machine design, fmeda analysis

ISO 26262 functional safety for an automotive SoC connects vehicle hazards to goals, requirements, architecture, verification, and production controls. An Automotive Safety…

Iso-Dense Bias

lithography

Iso-Dense Bias is a systematic CD difference between isolated features and dense periodic arrays patterned from identical mask dimensions, arising from optical proximity effects…

J-Lead

packaging

J-lead is the curved inward lead style where terminals wrap under the package body in a J-like profile - it reduces package footprint while maintaining leaded electrical…

Japan-Chip-Revival

japan chip revival, what is japan chip revival

An umbrella term for renewed semiconductor investment. Japan chip revival describes efforts to strengthen semiconductor manufacturing, research, design support, and supply-chain…

Japanese Semiconductor Industry

DRAM dominance, manufacturing excellence, US-Japan competition, memory market, semiconductor trade

The Japanese semiconductor industry is the collection of companies and coordinated national efforts that made Japan a dominant force in chip manufacturing, especially in memory…

Jay Lathrop

Jay W. Lathrop, James Nall, Lathrop and Nall, Diamond Ordnance Fuze Laboratories, inverted microscope lithography, 1957 photolithography invention

Jay W. Lathrop was an American engineer who, together with James R. Nall, invented photolithography for semiconductor devices at the US Army's Diamond Ordnance Fuze Laboratories…

Jean Hoerni

Jean Amédée Hoerni, planar process inventor, Traitorous Eight, Fairchild Semiconductor, Intersil, Amelco, Central Asia Institute

Jean Hoerni (1924–1997) was a Swiss-born physicist who invented the planar process, the method of building transistors under a protective oxide layer that made integrated circuits…

Jedec Standards for Packaging

jedec, standards

JEDEC standards for packaging is the industry specifications from JEDEC that define package handling, reliability testing, dimensions, and moisture controls - they provide common…

JTAG Boundary Scan Debug

ieee 1149.1 boundary scan, tap controller debug, on-chip debug trace, jtag test access port

Design-for-test architectures, automatic test pattern generation, and structural fault modeling constitute the digital verification and manufacturing test disciplines engineered…

Junction Transistor Process Flow

junction transistor device process flow, alloy junction transistor process, grown junction transistor process, alloy-junction transistor fabrication, indium alloy regrowth germanium, base width furnace control

Junction Transistor Device Process Flow: Alloy Regrowth, Eutectic Doping & Furnace-Controlled Base Width The junction transistor replaced a human hand with a furnace. Where…

Junction Transistor Process Flow Wafer Lapping

alloy junction wafer lapping, wafer lapping punch through margin, alloy junction base width series resistance, wafer total thickness variation TTV

Junction Transistor Wafer Lapping: The Punch-Through Floor and the Series-Resistance Ceiling Wafer lapping is the first step in the alloy-junction process flow, and it sets…

Junctionless Transistors

junctionless fet fabrication, junctionless vs inversion mode, junctionless doping profile, junctionless process simplification

Junctionless Transistors: Device Physics, Full Depletion Limits & Monolithic 3D In classical inversion-mode MOSFETs (FinFETs and Gate-All-Around nanosheets), current modulation…

K Dielectric Anneal High

high-k anneal, post deposition anneal, hkmg thermal treatment, eot stabilization, hkmg

High-k metal gate (HKMG) integration, replacement metal gate (RMG / gate-last) processing, and dual work function metal (WFM) engineering constitute the foundational materials…

K Means Clustering Wafer Map Pattern Prediction Machine Learning

k-means clustering wafer map pattern prediction, k-means clustering wafer, clustering wafer map, wafer map pattern, map pattern prediction, k-means clustering, wafer map

K-Means Clustering Wafer Map Pattern Prediction with Machine Learning Introduction & Motivation K-Means Clustering Wafer Map Pattern Prediction with Machine Learning addresses…

K1 Factor

rayleigh equation, resolution enhancement, process difficulty, lithography k1, multi-patterning

The k1 factor is the single number in the Rayleigh resolution equation that measures how hard a lithography process is being pushed relative to the physical limit of its own…

Kelvin Contact

metrology

Kelvin Contact (Four-Terminal Sensing) is the precision resistance measurement technique that eliminates probe contact resistance and lead resistance errors by using separate…

Kelvin Probe

metrology

A Kelvin probe measures contact potential difference (CPD)—the electrostatic potential between a vibrating probe tip and a sample surface—via an AC capacitive coupling…

Kelvin Probe Force Microscopy (Kpfm)

kelvin probe force microscopy, kpfm, metrology

Kelvin Probe Force Microscopy (KPFM) is a scanning probe technique that measures the local contact potential difference (CPD) between a conductive AFM tip and a sample surface…

Kerf Loss

wafer dicing, scribe street width, blade dicing, laser dicing, plasma dicing, die per wafer, singulation

Kerf loss is the silicon area destroyed, not just divided, when a wafer gets cut into individual die — the width of material the saw blade, laser, or plasma stream actually…

Killer Defect Size

metrology

Killer defect size is the minimum defect dimension that causes device failure — a critical threshold that determines inspection sensitivity requirements, with smaller nodes…

Known Good Die for Chiplets

kgd, advanced packaging

Known Good Die (KGD) is a semiconductor die that has been fully tested and verified to be functional before being assembled into a multi-die package — ensuring that only working…

Koh Etch

anisotropic silicon etching, wet etch silicon, potassium hydroxide etch, mems bulk micromachining, crystal plane etch, koh silicon etch, crystallographic etch, v groove etch

KOH etching is crystal-programmed silicon machining: hydroxide chemistry supplies removal, but wafer orientation, mask azimuth, plane-rate ratios, corner evolution…

Korean Memory Industry

South Korea semiconductors, DRAM and flash leadership, conglomerate investment, memory cycles, shifting memory leadership

The Korean memory industry is the collection of South Korean companies and national efforts that made South Korea a dominant force in semiconductor memory, rising after Japan…

Krf (krypton Fluoride)

krf, krypton fluoride, lithography

KrF (krypton fluoride) excimer lasers produce 248nm deep-UV light, and were the industry's workhorse exposure source from roughly 1996 to 2005 — carrying the transition…

Krf-Lithography

krf lithography, what is krf lithography

KrF lithography uses krypton-fluoride excimer-laser light to expose photoresist. Its nominal wavelength is 248 nanometers, within deep ultraviolet. The laser is part of a larger…

Lab-on-Chip-Integration Machine Learning

lab-on-chip integration

Lab-On-Chip Integration Introduction & Motivation Lab-On-Chip Integration addresses a central problem in microfluidics process control and device-footprint-mm2 prediction: how…

Lab-on-Chip Reagent Dispense Accuracy Prediction with Machine Learning

lab on chip reagent dispense accuracy prediction with machine learning, lab chip reagent dispense accuracy prediction machine learning, lab chip, lab-on-chip reagent

Lab-on-Chip Reagent Dispense Accuracy Prediction with Machine Learning Introduction & Motivation Lab-on-Chip Reagent Dispense Accuracy Prediction with Machine Learning addresses…

Lagrangian Mechanics

analytical lagrangian dynamics, euler lagrange mechanics, generalized coordinate mechanics, variational mechanics, lagrangian mechanics semiconductor, engineering lagrangian modeling

Lagrangian mechanics predicts motion by expressing a system through generalized coordinates, kinetic and potential structure, constraints, and generalized forces. Instead…

Lamella Preparation

metrology

Lamella preparation is the process of creating an ultra-thin specimen slice (<100 nm thick) from a specific location in a semiconductor device for examination in a Transmission…

Land Grid Array

lga, packaging

Land grid array is the array package type that uses flat metal lands instead of solder balls on the package bottom - it supports fine-pitch high-I O interfaces with socketed…

Langmuir Probe

metrology

A Langmuir probe is a physical diagnostic tool inserted directly into a plasma to measure fundamental plasma parameters: electron density, electron temperature, plasma potential…

Lapping

wafer lapping, double-sided lapping, lapping slurry, subsurface damage, sawing damage, alumina grit, silicon carbide grit

Lapping is the wafer-preparation step in which a sliced semiconductor disc is rubbed between two flat plates with a loose abrasive slurry, removing the rough, cracked surface left…

Laser Ablation ICP-Ms

metrology

Laser Ablation ICP-MS (LA-ICP-MS) is an analytical technique that combines pulsed laser ablation of a solid sample with inductively coupled plasma mass spectrometric detection…

Laser Assisted Bonding

laser bonding chiplet, localized laser reflow, fine pitch microbump laser attach, selective laser solder reflow

Laser-assisted bonding heats only the bond site itself, a localized spot measured in microseconds, instead of putting the whole package through a furnace cycle the way…

Laser Debonding

advanced packaging

Laser Debonding is a non-contact wafer separation technique that uses a focused laser beam to ablate the adhesive layer at the carrier-wafer interface — scanning through…

Laser Dicing Debris Redeposition Prediction with Machine Learning

laser dicing debris redeposition prediction machine learning, laser dicing, debris redeposition prediction, laser dicing debris redeposition prediction, laser dicing debris

Laser Dicing Debris Redeposition Prediction with Machine Learning Introduction & Motivation Laser Dicing Debris Redeposition Prediction with Machine Learning addresses a central…