Micro-Bridging
lithography
Micro-bridging is a type of stochastic patterning defect where unwanted thin connections of residual resist form between two adjacent features that should be separate. These…
3,822 technical terms and definitions
lithography
Micro-bridging is a type of stochastic patterning defect where unwanted thin connections of residual resist form between two adjacent features that should be separate. These…
advanced packaging prediction of micro-connector contact yield from design parameters and manufacturing conditions, advanced packaging prediction, packaging prediction micro-connector
Advanced Packaging: Prediction of micro-connector contact yield from design parameters and manufacturing conditions Introduction & Motivation Advanced Packaging: Prediction…
mini led backlight, micro led transfer, led on silicon backplane, micro led efficiency droop
Micro-LED Display Semiconductors are miniaturized InGaP/GaN LEDs (1-100 µm pixel size) integrated with active-matrix CMOS backplanes, requiring mass-transfer technology…
mini led micro led, led epitaxy gaas substrate, mass transfer micro led, led pixel pitch scaling
Micro-LED fabrication grows red, green, and blue emitters as compound-semiconductor epitaxial stacks, etches each emitter down to an isolated mesa only a few micrometers across…
coffin manson microbump, distance to neutral point packaging
Microbump thermal cycling fatigue is the slow mechanical failure of the thousands-to-millions of solder microbumps joining a GPU die to its interposer or substrate, driven not…
MCU, embedded processor, on-chip memory and IO, 8051, embedded systems, single-chip computer
A microcontroller is an integrated circuit that combines a processor core with program memory, data memory, and input/output peripherals on a single chip, so that it can operate…
fairchild 1960 exhaustive test vectors stuck at fault coverage, micrologic transistor 1960 logic gate probe not parameter test, integrated circuit 1960 functional test versus parametric test
Verify Circuit Function on the Wafer, Not Just One Transistor's Parameters: Testing a Truth Table, Not a Number 1. Why Passing Every Parameter Test Still Does Not Mean the Gate…
fairchild 1960 poisson yield circuit area sum components, micrologic transistor 1960 one bad component fails circuit, integrated circuit 1960 correlated failure yield penalty
Confront a New Yield Problem: One Bad Transistor Now Fails the Entire Chip 1. Why the Poisson Yield Model Now Has to Count a Whole Circuit's Area, Not One Die's This step forces…
integrated circuit die cost versus transistor count curve, exponential yield penalty applied to chip pricing
Price a Chip by Its Transistor Count, Not Its Function: The Cost Per Good Die Curve This Product Forced 1. Why Adding One More Transistor Costs More Than Adding One More…
metrology
Micrometer is a precision mechanical measuring instrument that uses a calibrated screw mechanism to measure dimensions with 1-10 micrometer resolution — one of the most…
micrometer features, feature-size scaling, process generation, micron-scale chips, scaling phases
The micron era refers to the period in chip manufacturing when the smallest features on integrated circuits were measured in whole micrometers, roughly spanning the time before…
CPU on a chip, single-chip processor, Intel 4004, fetch-decode-execute, microcontroller vs microprocessor, x86, Federico Faggin
A microprocessor is a complete central processing unit fabricated on a single integrated circuit, pulling the arithmetic, control, and register logic that earlier computers spread…
intel 1971 hoff faggin mazor shima busicom mcs4, 4004 1971 silicon function fixed versus behavior from program, microprocessor 1971 extends persistence into stored instructions
Why a Calculator Chip Project Became a General-Purpose Processor: The First Series Whose Silicon Does Not Fix What the Chip Does 1. Why Every Earlier Series Encoded Its Function…
intel 4001 256 by 8 mask programmed rom instruction storage, 4004 1971 external program rom fetch opr opa, microprocessor 1971 stable rom program differs from refreshing dram
Store the Program in a Separate Read-Only Memory Chip: Keep Instructions Stable Outside the Processor 1. Let the 4004 Select Instructions From a 4001 Program ROM The Intel 4004…
intel mcs 4 4004 4001 4002 4003 chip set, 4004 fetch decode execute stored program architecture, microprocessor 1971 stored instructions select reusable hardware behavior
Classify and Release: The Architecture Every Later Chip Will Assume 1. Classify the 4004 as a CPU, Not as the Entire Computer The Intel 4004 integrates the central processing…
texas instruments tms 1000 single chip computer comparison, design priority versus shipping priority definitional dispute
Survey the Competing Priority Claim: Texas Instruments' TMS 1000 and What "First" Actually Means 1. A Second Chip, Designed Earlier, Shipped Later Texas Instruments began…
second sourcing intel 8080 lineage multiple manufacturers, architecture portable across fabrication lines not one company
License the Design Itself: Second-Sourcing as a Business Practice This Series Has Not Yet Named 1. A Different Kind of Reuse Than Step 16's Cost Model Describes Step 16 of this…
metrology
Microroughness is the surface height variation at spatial wavelengths below ~1 µm (typically 0.01-10 µm) — characterizing the atomic-scale and near-atomic-scale surface texture…
metrology
Spectroscopic ellipsometry and inline optical wafer metrology constitute the non-destructive physical measurement and defect detection disciplines that govern yield control across…
local interconnect semiconductor, contact over active gate, middle of line metallization, mol contacts
Self-aligned silicides and nanoscale contact metallization architectures represent the material and thermodynamic interfaces engineered to establish low-resistance ohmic…
moq, minimum order quantity, minimum quantity, how many wafers, smallest order
Minimum order quantities vary by service type, with flexible options from 5 wafers for prototyping to 25 wafers for production — including Multi-Project Wafer (MPW) programs that…
multi-die package, chiplet heterogeneous integration
Modern system-on-chip roadmaps increasingly abandon single monolithic silicon in favor of a mix and match chiplet strategy, where logic, memory, analog, and input/output functions…
millimeter-wave chips, what is millimeter-wave chips
Millimeter-wave chips process radio signals at frequencies associated with millimeter-scale wavelengths. The strict 30–300 GHz range corresponds to wavelengths of roughly 10–1 mm…
mmwave packaging dielectric loss tangent variation prediction, mmwave packaging dielectric, packaging dielectric loss, dielectric loss tangent
mmWave Packaging Dielectric Loss Tangent Variation Prediction with Machine Learning Introduction & Motivation mmWave Packaging Dielectric Loss Tangent Variation Prediction…
metal-nitride-oxide-semiconductor, charge trapping memory, nitride charge storage, non-volatile memory alternative
MNOS memory — metal-nitride-oxide-semiconductor — is an early non-volatile memory technology that stores data as charge trapped in a nitride layer within the transistor's gate…
mobile-phone chips, what is mobile-phone chips
A mobile phone depends on several semiconductor functions rather than one universal phone chip. In the 1990s context, those functions include baseband processing, radio-frequency…
metalorganic chemical vapor deposition, gas-phase epitaxy, compound semiconductor growth, production epitaxy, metalorganic precursors
MOCVD, metalorganic chemical vapor deposition, is a method of growing crystalline semiconductor layers by reacting gas-phase chemical compounds — including metalorganic precursors…
mocvd compound semiconductor composition uniformity prediction, mocvd compound semiconductor, compound semiconductor composition, semiconductor composition uniformity
MOCVD Compound Semiconductor Composition Uniformity Prediction with Machine Learning Introduction & Motivation MOCVD Compound Semiconductor Composition Uniformity Prediction…
mocvd reactor wafer carrier wobble prediction machine learning, mocvd reactor, wafer carrier wobble, cvd mocvd, mocvd reactor wafer carrier wobble prediction
MOCVD Reactor Wafer Carrier Wobble Prediction with Machine Learning Introduction & Motivation MOCVD Reactor Wafer Carrier Wobble Prediction with Machine Learning addresses…
metrology
Model-Based OCD is the computational engine behind optical scatterometry — using electromagnetic simulation (RCWA, FEM, or FDTD) to compute the expected optical response for…
process control
MPC (Model Predictive Control) in semiconductor manufacturing is a multi-variable control strategy that uses a process model to predict future outputs and optimize control actions…
Martin Atalla, Egyptian-born engineer, thermal oxide passivation, MOSFET inventor, Atalla Corporation, PIN verification, Hewlett-Packard semiconductor
Mohamed M. Atalla (1924-2009) was an Egyptian-born engineer and physicist at Bell Labs who developed the silicon-silicon dioxide surface passivation method that made reliable…
emc, mold compound, popcorn, msl, moisture sensitivity, packaging, reliability
Moisture absorption is the uptake of ambient moisture by molding compounds and package materials during storage and handling - it directly impacts moisture sensitivity level…
packaging
Moisture barrier packaging is the packaging system designed to limit moisture ingress into moisture-sensitive semiconductor components during storage and transit - it is…
msl, packaging
Moisture sensitivity level is the classification that defines how long a package can be exposed to ambient conditions before reflow without moisture damage - it is a fundamental…
packaging
Mold cavity is the shaped chamber in molding tooling where compound forms around the package structure during encapsulation - its geometry and surface condition strongly influence…
packaging
Mold chase is the upper and lower mold tooling assembly that houses cavities, runners, and gates in transfer or compression molding - it provides structural accuracy and thermal…
packaging
Mold close time is the time interval required for mold halves to close, align, and reach clamped readiness before transfer - it influences cycle efficiency and flash control…
packaging
Mold design is the engineering of tooling geometry and flow paths used to encapsulate semiconductor packages during molding - it determines fill behavior, defect rates…
packaging
Mold flash is the unwanted thin excess molding compound that escapes at mold parting lines or gaps during encapsulation - it is a common defect linked to tooling condition…
packaging
Mold temperature is the controlled tooling temperature that sets compound viscosity, flow behavior, and cure kinetics during encapsulation - it is one of the highest-impact…
packaging
Molded underfill is the packaging process where molding compound is engineered to simultaneously encapsulate the package and fill under-die interconnect gaps - it consolidates…
packaging
Molding compound is the engineered encapsulation material used to protect semiconductor packages from mechanical and environmental stress - its composition strongly influences…
packaging, units per hour, UPH, cure time quality floor, mold open time, non-value-added delay, cycle time decomposition, yield guardrails, throughput optimization
Molding cycle time is the total elapsed time for one complete molding operation — mold close, transfer and cure, mold open, part unload, and reload — and it's the single metric…
packaging
Molding process parameters is the set of controllable conditions such as temperature, pressure, timing, and transfer profile that govern encapsulation quality - they define…
MBE, atomic-layer growth, ultra-high vacuum, compound semiconductor layers, precise epitaxy
Molecular beam epitaxy is a method of growing crystalline layers on a substrate one atomic layer at a time by directing beams of atoms or molecules at a heated crystal surface…
production
A monitor wafer is a dedicated wafer processed through specific tools to check equipment performance, cleanliness, particle levels, and process quality. Purpose: Verify that…
particle monitor, film monitor, electrical monitor, SPC chart feed, tool health tracking, short loop test structure, monitor to product correlation, process drift detection, non product wafer
Monitor wafers are non-product wafers deliberately run alongside actual production wafers specifically to track ongoing tool and process health — dedicated to measurements like…
monolithic 3d transistor stack, vertical cmos integration, inter tier via process, 3d logic fabrication
Monolithic 3D Integration Process is the transistor stacking methodology that fabricates multiple active device tiers on one wafer with dense vertical connections. What It Covers…
mc simulation, statistical simulation, variance reduction, importance sampling, semiconductor monte carlo
Monte Carlo simulation is the computational method that uses random sampling to solve deterministic and stochastic problems — generating thousands or millions of random trials…