Semiconductor/Solid-State Device Manufacturing TRIZ Cases

Multiple wavelengths, hot and cold mirrors, and separate detectors improve overlay error measurement across wafer layers with different heights and optics.

Bottom seed growth and chlorine-based bottom-up deposition fill high-aspect-ratio FinFET trenches without seams or voids.

Separate recovery and drain paths plus dilute HF cleaning and gas purging keep substrate processing lines clear of silicon crystal deposits.

Defective wafer regions are removed, thermally enlarged, and filled with matching good chips to improve stacked device chip yield.

Selective etching trims fins more in sparse pitch areas than in tight regions, improving short-channel control while preventing fin collapse.

Thermal cyclical deposition forms chromium nitride gate layers with higher work function than polysilicon or titanium nitride for CMOS devices.

An annular conduit deposits unsaturated fluorocarbon at the wafer edge to curb non-uniform etching and extend focus ring life.

Graded epitaxial source/drain layers merge across fins and support silicide formation to lower FinFET source/drain and contact resistance.

Protective layers recessed in peripheral vias prevent over-etch gaps and high contact resistance during resistive memory fabrication.

Cylindrical capacitor contacts formed between DRAM bit lines cut leakage by removing sharp corners while preserving volume and contact area.

Modified layers are formed before laminate grooves to suppress abnormal crack extension, reduce wafer inversion, and improve dicing reliability.

A two-level gate electrode creates vertical spacing for self-aligned contacts, preventing gate-to-source/drain shorts and improving process margin.

Region-specific mask and filling steps improve edge pattern density uniformity, cut defects, and preserve bulk pattern area in semiconductor fabrication.

Staged etching of channel and dummy openings improves spacing uniformity and electrical coupling in vertically stacked memory arrays.

Using different oxygen gases to build an amorphous metal oxide interface layer improves capacitor morphology and cuts leakage current.

Rectilinear cavities sealed by insulator layers isolate substrate regions in an SOI wafer to cut capacitance and body-to-body leakage.

A two-step lifter raise sequence uses coarse and fine pitch detection to automate substrate touch positioning and cut setup time.

A conductive gas passage part contacts the insulating plug to equalize potential, suppress plug-end discharge, and support higher cooling gas pressure.

Multi-focused laser spots pre-form cracks along the bonding layer, removing bonded wafer chamfer edges faster without void-related damage.

Surface-treated hydrophobic and hydrophilic regions guide selective sp2 carbon masking to improve nanoscale interconnect alignment and resistance.

Separated two-fluid and fan-shaped jets keep the wafer wet while lifting and flushing particles, improving cleaning at limited rotation speed.

External motor and reducer access keeps the vacuum transfer robot compact, sealed, and easier to repair without link-arm disassembly.

Polishing the photoresist mask instead of the dielectric cuts staircase step height, improves surface evenness, and reduces 3D NAND process time.

Discrete dot-mask arrays in the memory region improve multi-direction lithography quality and reduce pattern roughness without losing peripheral line patterns.

Non-reactive gas routed through lift pin channels creates a diffusion barrier that prevents wafer backside deposition and peeling defects.

Unsaturated BCl3 adsorption creates pseudo-catalytic sites for void-free silicon nitride filling in substrate recesses without extra etching.

Ti/TiN/W metallization plus silicon oxide passivation enables fine conductor lines while reducing cracking, corrosion, and stress.

Dopant implantation into source/drain regions and adjacent spacers improves FinFET stress control, DIBL stability, and wafer uniformity.

Alternating GaN superjunction columns and epitaxial regrowth cut specific on-resistance while preserving high breakdown voltage and die size.

Peripheral and internal laser modification layers replace grinding to thin wafers, correct eccentricity, and avoid water use and whetstone upkeep.

A laminar air curtain built into the wafer pod opening blocks wet gases from the equipment front end and helps protect wafer yield.

High- and low-emissivity chamber walls counter pumping-port heating imbalance to improve wafer temperature and film deposition uniformity.

Sequential etching of stacked hard masks clears cut-region residues in fin structures, preventing shorts and over- or under-etch defects.

Selective etching of multi-material stacked gate layers creates recessed regions that cut storage-region interference and enable higher integration.

Rounded or chamfered replacement gate corners keep source/drain regions farther apart, cutting leakage, shorts, and yield loss.

Fluorinated surfactants lower rinse surface tension to prevent resist pattern collapse, reduce bridge defects, and limit residue.

CESL undercuts expose more source/drain surface so silicide and contacts lower resistance and improve scaled FinFET performance.

Silicon plugs segment conductive trench fill to allow deep isolation crossings, separate voltage domains, and prevent short circuits.

A phase-separating block copolymer forms an in-situ underlayer in EUV photoresist, improving substrate adhesion while reducing defects and extra coating steps.

Separate edge and center mask patterning enables uniform fine etch features in dense semiconductor cell regions without pattern damage.

A seed-layer sequence strips ligands before bulk deposition, lowering nitrogen and carbon impurities while improving film thickness uniformity.

Cooling the substrate to condense c-C4F8 and SF6 enables mask-free carbon film growth on metal while insulating areas are etched.

Using oxygen-containing hydrofluorocarbon plasma, this case boosts SiO2 and SiN etch rates while preserving mask selectivity and high-aspect-ratio profiles.

A porous region inside the well reshapes the LDMOS drain drift electric field to improve BVdss and transconductance in scaled devices.

Dummy digit lines are replaced after high-temperature steps to cut leakage, defects, and capacitance loss in stacked memory fabrication.

A fat-Y backside contact widens the lower region to prevent metal-fill voids, strengthen source/drain connection, and reduce front-side IR drop.

Spatial light modulation lowers laser power density during reflectance detection, helping acquire accurate surface reflectance without damaging the workpiece.

Shared TFT source and drain electrodes form the light detector, expanding sensing area while preserving aperture ratio and lowering fabrication cost.

Balances polishing stress resistance with easy wafer release by combining hydrosilylation curing and epoxy-modified polysiloxane.

Selected MOS transistor cells switch off at higher gate voltage to limit heating and expand SOA without raising on-state resistance.