Advanced Packaging

Joining logic chiplets and HBM into larger, faster compute packages

Heat (est.) Spend (est.)

CoWoS-class capacity has decided accelerator shipment volumes for three years running and still does.

Advanced packaging connects separate dies at densities that circuit boards cannot provide. AI accelerators depend on interposers, stacked memory and fine-pitch bonding to move data efficiently. Foundries, OSATs and equipment specialists share a production chain where yield and thermal control matter at every step.

Why now

HBM4 and larger chiplet packages raise demand for precision bonding, thinning and inspection in 2026. Packaging capacity expands across Asia and the US; glass-core and panel processes remain a mix of commercial niches, qualification work and future production plans.

2.5D/3D integration

Foundries, memory makers and OSATs integrate chiplets and HBM into complete packages. Interposer routing, fine-pitch connections, thermal behavior and known-good-die yield determine usable system performance.

Heat (est.)
  1. Integrates AI logic and HBM with CoWoS-S/L/R interposers and SoIC 3D stacking in its 3DFabric portfolio

    leader
    TSM · TWExposure
  2. Provides VIPack and FOCoS chiplet integration; SPIL adds advanced assembly capacity within the group

    major
    ASX · TWExposure
  3. Offers EMIB/EMIB-T bridges and Foveros 3D stacking for heterogeneous logic and HBM packages

    major
    INTC · USExposure
  4. Offers 2.5D assembly and prepares Intel EMIB services in Korea and Portugal; Arizona production remains future

    major
    AMKR · USExposure
  5. Offers I-Cube 2.5D and X-Cube 3D integration; combines foundry logic with memory packaging

    challenger
    005930.KS · KRX · KRExposure
  6. Stacks HBM using TSVs and MR-MUF processing; packages high-bandwidth memory for AI accelerators

    leader
    SKHY · KRExposure
  7. Builds TSV-based HBM stacks and advanced memory packages for AI accelerator integration

    major
    MU · USExposure
  8. Uses XDFOI fan-out chiplet integration to connect logic, HBM and passives in high-density packages

    challenger
    600584.SS · SSE · CNExposure
  9. Packages CPUs and GPUs through its AMD-linked Suzhou and Penang operations

    major
    002156.SZ · SZSE · CNExposure
  10. Supplies wafer bumping and high-density 2.5D/3D heterogeneous integration for complex chip packages

    challenger
    688820.SS · SSE · CNExposure
  11. Offers eSiFO wafer-level fan-out and SiP assembly for multi-die semiconductor products

    challenger
    002185.SZ · SZSE · CNExposure
  12. Makes silicon interposers, hybrid-bonding bridge dies and discrete trench capacitors for heterogeneous packages

    niche
    UMC · TWExposure
  13. Develops wafer-on-wafer 3D AI foundry services, silicon interposers and SiCap integration at retained Taiwan sites

    niche
    6770.TW · TWSE · TWExposure
  14. Supplies TSV and hybrid-bonded S-stacking/M-stacking platforms plus 2.5D interposer development

    niche
    Private · CNExposure
  15. Adds advanced optical packaging to its planned Japan 300mm silicon photonics manufacturing platform

    emerging
    TSEM · ILExposure
  16. Develops 2.xD/3D chiplet packaging at its Chitose RCS pilot facility alongside its 2nm front-end program

    emerging
    Private · JPExposure
  17. Via SkyWater Florida's NeoVation site, offers wafer-level fan-out and 2.5D/3D packaging development services

    niche
    IONQ · USExposure

Sources: 3dfabric.tsmc.com, amkor.com, powerchip.com, rapidus.inc, sec.gov, finance.yahoo.com

Outsourced assembly

Independent assembly providers turn finished wafers into packaged components. Flip-chip, bumping, fan-out and memory assembly capabilities determine which firms can support increasingly complex AI-related products.

Heat (est.)
  1. Runs ASE and SPIL assembly operations spanning flip-chip, fan-out, SiP and advanced chiplet packages

    leader
    ASX · TWExposure~44.6% of top-10 OSAT group sales, 2024 (est.)
  2. Provides turnkey wafer bumping, flip-chip, SiP and 2.5D assembly at a global factory network

    major
    AMKR · USExposure~15.2% of top-10 OSAT group sales, 2024 (est.)
  3. Offers turnkey assembly from wire-bond and flip-chip to wafer-level packaging and XDFOI integration

    major
    600584.SS · SSE · CNExposure~12.0% of top-10 OSAT group sales, 2024 (est.)
  4. Provides flip-chip and high-performance CPU/GPU packaging through Chinese and Malaysian factories

    major
    002156.SZ · SZSE · CNExposure~8.0% of top-10 OSAT group sales, 2024 (est.)
  5. Supplies eSiFO fan-out, stacked-memory and SiP assembly across its Chinese and overseas operations

    major
    002185.SZ · SZSE · CNExposure~4.8% of top-10 OSAT group sales, 2024 (est.)
  6. Packages DRAM and NAND and expands fan-out panel-level assembly for AI/HPC customers

    major
    6239.TW · TWSE · TWExposure~5.5% of top-10 OSAT group sales, 2024 (est.)
  7. Packages memory and logic with flip-chip, WLP and SiP processes across Korean and Vietnamese operations

    major
    067310.KQ · KOSDAQ · KRExposure
  8. Assembles DRAM and NAND packages, including memory modules and storage products, for chip manufacturers

    major
    036540.KQ · KOSDAQ · KRExposure
  9. Supplies memory and mixed-signal assembly with gold, copper-pillar and wafer bumping services

    niche
    IMOS · TWExposure
  10. Performs wafer bumping, redistribution, thinning and wafer-level chip-scale package assembly

    niche
    6147.TWO · TPEx · TWExposure
  11. Provides fan-out wafer and 600mm panel packaging with M-Series and Adaptive Patterning technology

    niche
    033640.KQ · KOSDAQ · KRExposure
  12. Supplies Cu-pillar bumping, WLP and flip-chip assembly for display-driver, PMIC and image-sensor dies

    niche
    061970.KQ · KOSDAQ · KRExposure
  13. Supplies bumping, flip-chip, wafer-level and SiP assembly for communications and compute chips

    challenger
    688362.SS · SSE · CNExposure
  14. Assembles analog, mixed-signal and logic ICs in GQFN packages with wire-bond, flip-chip and stacked-die options

    niche
    Private · SGExposure
  15. Offers wafer bumping, flip-chip and wafer-level package assembly from Malaysia and China

    niche
    5005.KL · MYExposure
  16. Assembles RF modules and fiber-optic/optoelectronic devices; its exposure extends beyond AI data-center optics

    niche
    0166.KL · MYExposure
  17. Via Carsem, assembles analog, power and RF devices plus multi-die SiP modules for computing and communications

    major
    3867.KL · MYExposure
  18. Provides US specialty die assembly, hermetic packaging and qualification through its Micross and Integra operations

    niche
    Private · USExposure

Sources: trendforce.com, hanamicron.com, lbsemicon.com, carsem.com, prnewswire.com, kind.krx.co.kr

TCB, hybrid & die bonders

Tools and process IP for joining dies and wafers: thermocompression stacks HBM, while hybrid bonding joins copper and dielectric surfaces for finer-pitch integration. Equipment suppliers compete on alignment and throughput; Adeia licenses the underlying bonding IP.

Heat (est.)
  1. Supplies Datacon hybrid die bonders and precision die attach; collaborates with Applied on integrated bonding

    leader
    BESI.AS · Euronext Amsterdam · NLExposure
  2. Supplies TC BONDER 4.5 GRIFFIN for HBM4 stacking, including SK hynix's disclosed 2026 orders

    leader
    042700.KS · KRX · KRExposure
  3. Supplies chip-to-wafer and chip-to-substrate TCB platforms plus HBM stacking equipment

    major
    0522.HK · HKEX · SGExposure
  4. Via wholly owned Hanwha Semitech, supplies HBM TC bonders to SK hynix's expanding memory-assembly lines

    challenger
    489790.KS · KRX · KRExposure
  5. Via SEMES, supplies thermocompression bonders that align and stack memory dies in HBM packages

    niche
    005930.KS · KRX · KRExposure
  6. Supplies APTURA TCB systems with fluxless bonding options for wafer, substrate and panel assembly

    challenger
    KLIC · SGExposure
  7. Supplies TFC-6500 flip-chip and TFC-6700/6800 hybrid bonders for chip-to-wafer integration

    major
    6590.T · TSE · JPExposure
  8. Supplies wafer hybrid bonders and IR LayerRelease temporary bonding/debonding for thin HBM wafers

    leader
    Private · ATExposure
  9. Offers XBC temporary bonding/debonding and XBS wafer hybrid-bonding platforms for stacked memory

    major
    SMHN.DE · XETRA · DEExposure
  10. Provides surface preparation and integrated die hybrid-bonding systems co-developed with Besi

    major
    AMAT · USExposure
  11. Supplies wafer bonding and debonding equipment for 3D integration and thin-wafer handling

    major
    8035.T · TSE · JPExposure~27% of wafer-bonder revenue, 2025 (est.)
  12. Via Toray Engineering, supplies TCB and hybrid bonders for wafers and panels up to 600mm square

    niche
    3402.T · TSE · JPExposure
  13. Via Yamaha Robotics' SHINKAWA series, supplies die and flip-chip bonding equipment

    niche
    7272.T · TSE · JPExposure
  14. Supplies laser-assisted bonding equipment for high-density semiconductor package assembly

    niche
    053610.KQ · KOSDAQ · KRExposure
  15. Supplies precision die pickers and bonders for advanced semiconductor packaging

    niche
    6640.TWO · TPEx · TWExposure
  16. Supplies chip-to-wafer, chip-to-panel and flip-chip die bonders for advanced package assembly

    challenger
    Private · SGExposure
  17. Supplies Dione300 wafer-to-wafer hybrid bonders and Dione300FeX fusion-bonding tools for 3D integration

    challenger
    688072.SS · SSE · CNExposure
  18. Develops wafer hybrid/fusion bonding and precision alignment equipment for CIS, memory and 3D-IC integration

    emerging
    Private · CNExposure
  19. Licenses DBI and DBI Ultra hybrid-bonding IP for die-to-wafer memory stacking and heterogeneous logic integration

    niche
    ADEA · USExposure
  20. Via Panasonic Connect, supplies MD-P200 die/flip-chip bonders for multi-chip and high-density package assembly

    niche
    6752.T · TSE · JPExposure

Sources: tel.com, investor.kns.com, adeia.com, connect.panasonic.com, static.sse.com.cn, cfi.cn

Thinning, patterning & wet processing

Packaging wafers need thinning, singulation, redistribution wiring and clean metal surfaces. Equipment shares depend on fragile-wafer handling, TSV uniformity, lithography overlay and compatibility with larger package formats.

Heat (est.)
  1. Supplies precision grinders, polishers and dicing systems for thin HBM wafers and chiplet singulation

    leader
    6146.T · TSE · JPExposure
  2. Supplies Accretech polish grinders and dicing tools for thin-wafer and advanced package processing

    major
    7729.T · TSE · JPExposure
  3. Provides TSV deposition, interposer metallization and CMP equipment for 2.5D/3D packaging

    major
    AMAT · USExposure
  4. Supplies SABRE copper plating and Semsysco wet processing for wafers and advanced packaging panels

    major
    LRCX · USExposure
  5. Supplies wafer cleaning, coating and plasma processing used in TSV and 3D package manufacturing

    major
    8035.T · TSE · JPExposure
  6. Supplies wafer cleaning and coating systems for redistribution and advanced package processing

    major
    7735.T · TSE · JPExposure
  7. Provides back-end i-line steppers that pattern large interposers and redistribution wiring

    major
    7751.T · TSE · JPExposure
  8. Supplies JetStep lithography for wafer and panel redistribution layers and advanced IC substrates

    major
    ONTO · USExposure
  9. Supplies AP200/300 Unity-platform lithography for copper pillars, fan-out, TSVs and interposers

    major
    VECO · USExposure
  10. Offers DSP-100 maskless digital lithography for packaging panels up to 600mm square

    emerging
    7731.T · TSE · JPExposure
  11. Develops DLT digital exposure with Applied Materials for fine-line wafer and panel package wiring

    niche
    6925.T · TSE · JPExposure
  12. Provides packaging coat/develop, mask alignment and projection lithography equipment

    major
    SMHN.DE · XETRA · DEExposure
  13. Supplies advanced-packaging wet cleaning and electroplating through its Shanghai equipment subsidiary

    challenger
    ACMR · USExposure
  14. Supplies back-end wet flux removal, TSV cleaning and carrier-debond cleaning for stacked-die packages

    niche
    079370.KQ · KOSDAQ · KRExposure
  15. Supplies spin processors and batch wet benches for packaging wafer clean, etch and resist strip

    major
    3131.TWO · TPEx · TWExposure
  16. Supplies single-wafer and panel wet systems plus temporary bonding/debonding for thin-wafer processing

    major
    3583.TW · TWSE · TWExposure
  17. Supplies sputtering and vacuum processing for under-bump metal and advanced package interconnects

    niche
    6728.T · TSE · JPExposure
  18. Supplies thin-film deposition platforms for redistribution wiring and advanced packaging metallization

    niche
    Private · CHExposure
  19. Provides grinding, polishing and wet-process automation for semiconductor package production

    niche
    5443.TWO · TPEx · TWExposure
  20. Supplies saw singulation, laser marking and automated handling for wafer-level and packaged semiconductor production

    niche
    217190.KQ · KOSDAQ · KRExposure
  21. Supplies APX300 plasma dicers that singulate thin wafers without blade-induced mechanical stress on fragile dies

    niche
    6752.T · TSE · JPExposure
  22. Supplies MDS plasma-dicing systems for wafer singulation with narrow streets and low die-edge damage

    niche
    Private · USExposure

Sources: disco.co.jp, eu.connect.panasonic.com, plasmatherm.com, globalzeus.com, nikon.com, ontoinnovation.com

Molding, dispense & reflow

Assembly lines protect dies with molding compounds and underfill, then form reliable package connections. Material placement, curing uniformity, void control and package warpage become harder as HBM stacks and chiplet packages grow.

Heat (est.)
  1. Supplies compression molding equipment that encapsulates thin HBM stacks and advanced packages

    leader
    6315.T · TSE · JPExposure~64.8% of semiconductor molding, FY2024 (est.)
  2. Via Yamaha Robotics' APIC YAMADA series, supplies molding and trim/form equipment for packages

    major
    7272.T · TSE · JPExposure
  3. Supplies ASYMTEK underfill dispensing and MARCH plasma surface treatment for wafer and panel packaging

    major
    NDSN · USExposure
  4. Supplies ECOLITE descum and GENEVA fluxless reflow for wafer-level and fan-out packaging

    major
    031980.KQ · KOSDAQ · KRExposure
  5. Via BTU, supplies TrueFlat, Aurora and Pyramax reflow ovens for thin-substrate AI package assembly

    niche
    ASYS · USExposure
  6. Supplies underfill dispensers, ball-mount and heat-sink attach machines for advanced packaging

    major
    6187.TWO · TPEx · TWExposure
  7. Supplies thermal curing, baking and related process equipment for semiconductor package lines

    major
    2467.TW · TWSE · TWExposure
  8. Supplies precision dispensing equipment for semiconductor underfill and package assembly

    niche
    053610.KQ · KOSDAQ · KRExposure
  9. Supplies encapsulation, trim and die-processing equipment for semiconductor backend production

    niche
    6640.TWO · TPEx · TWExposure
  10. Supplies EvoRTS reflow and pressure-curing systems that suppress voids in underfill and package bonding

    niche
    7734.TWO · TPEx · TWExposure
  11. Supplies flux jetting, indium attach and pressure-controlled lid/heatsink assembly systems for FCBGA and FCCSP packages

    niche
    7751.TWO · TPEx · TWExposure
  12. Supplies film-assisted transfer molding and Dynamic Insert Technology for selectively exposed package surfaces

    niche
    Private · NLExposure

Sources: towajapan.co.jp, pskholding.com, hta.com.tw, ableprint.com.tw, boschman.nl, yamaha-robotics.com

Packaging inspection & metrology

Inspection measures bumps, redistribution layers, hidden connections and bonding surfaces before defects destroy expensive chiplet assemblies. Optical, AFM and X-ray tools address different surface and buried-feature problems.

Heat (est.)
  1. Supplies Hawk and Eagle optical inspection and 3D bump metrology for HBM, chiplets and hybrid bonding

    leader
    CAMT · ILExposure
  2. Supplies Dragonfly G5 wafer inspection and Firefly panel metrology for dense package interconnects

    leader
    ONTO · USExposure
  3. Supplies Kronos and CIRCL-AP inspection for thinned wafers, bumps, TSVs and redistribution layers

    major
    KLAC · USExposure
  4. Combines optical/materials metrology with Sentronics dimensional measurement for wafer-level packaging

    major
    NVMI · ILExposure
  5. Supplies six-side 2D/3D package inspection and substrate vision systems for backend assembly

    challenger
    064290.KQ · KOSDAQ · KRExposure
  6. Uses IRIS infrared inspection to detect voids at bonded interfaces in HBM and hybrid-bonded wafers

    challenger
    348210.KQ · KOSDAQ · KRExposure
  7. Measures bonding surface roughness, copper recess and nanoscale topography using automated AFM

    major
    140860.KQ · KOSDAQ · KRExposure
  8. Supplies Meister and ZenStar 3D optical inspection for bumps, pillars and advanced packages

    niche
    098460.KQ · KOSDAQ · KRExposure
  9. Develops white-light interferometry and optical inspection for advanced packaging surface measurements

    niche
    3030.TW · TWSE · TWExposure
  10. Provides X-ray, acoustic and optical metrology plus bond testing for semiconductor packages

    major
    NDSN · USExposure
  11. Via Comet Yxlon, supplies 3D X-ray inspection for buried bumps and heterogeneous package connections

    major
    COTN.SW · SIX · CHExposure
  12. Supplies AFM and optical surface metrology for hybrid-bonding interfaces and package process control

    niche
    BRKR · USExposure
  13. Provides X-ray microscopy and electron/ion-beam analysis for package failure analysis and hidden defects

    niche
    Private · DEExposure
  14. Supplies SKYVERSE-900 3D topography and SPRUCE optical-defect tools for package interconnect inspection

    challenger
    688361.SS · SSE · CNExposure
  15. Via Unity-SC, supplies advanced packaging surface metrology and defect inspection for HBM and chiplets

    niche
    MRK.DE · XETRA · DEExposure
  16. Via Toray Engineering/TASMIT, supplies INSPECTRA wafer inspection for bumps, TSVs and package vias

    niche
    3402.T · TSE · JPExposure
  17. Measures microbump height, coplanarity and package warpage with optical 2D/3D inspection systems

    niche
    6617.T · TSE · JPExposure
  18. Supplies Wafer AVI and packaged-IC optical inspection for fan-out and CoWoS manufacturing flows

    challenger
    3563.TW · TWSE · TWExposure
  19. Supplies ALTAX inspection for microbump height and wafer surface defects in advanced packaging

    niche
    7885.T · TSE · JPExposure
  20. Uses X-ray metrology and imaging to inspect TSVs, microbumps and hidden interconnects in 3D packages

    niche
    268A.T · TSE · JPExposure
  21. Supplies scanning acoustic microscopes that find voids and delamination inside bonded wafers and chip packages

    major
    TPE.DE · XETRA · DEExposure

Sources: novami.com, prtimes.jp, businesswire.com, pvatepla.com, mk.co.kr, camtek.com

Panel-level & glass processing

Rectangular panels and glass cores aim to increase usable area and package routing density. Current offerings range from established fan-out niches to pilot glass-core lines; qualification, warpage and via yield govern adoption.

Heat (est.)
  1. Provides 600mm panel fan-out packaging using M-Series and Adaptive Patterning to compensate die shift

    major
    033640.KQ · KOSDAQ · KRExposure
  2. Adapts display-panel processing to chip-first/chip-last FOPLP and RDL interconnect panels

    challenger
    3481.TW · TWSE · TWExposure
  3. Expands fan-out panel packaging capacity for AI/HPC; customer qualification precedes full volume ramps

    challenger
    6239.TW · TWSE · TWExposure
  4. Reportedly pilots 310mm-square FOCoS panels for chiplet assembly; high-volume manufacturing remains a ramp target

    major
    ASX · TWExposurereported
  5. Reportedly develops CoPoS panel packaging for larger AI modules; commercial scale and timing remain unconfirmed

    emerging
    TSM · TWExposurereported
  6. Develops glass-core package processing to support larger heterogeneous compute packages

    emerging
    INTC · USExposure
  7. Via Absolics in Georgia, evaluates embedded glass-package samples with customers ahead of volume production

    emerging
    011790.KS · KRX · KRExposure
  8. Develops glass cores and signed a Dongwoo Fine-Chem JV agreement; planned supply starts in fiscal H2 2027

    emerging
    009150.KS · KRX · KRExposure
  9. Develops glass-core package processes with a stated 2028 mass-production target

    emerging
    011070.KS · KRX · KRExposure
  10. Provides glass wafer/panel and through-glass-via process platforms for package integration

    niche
    GLW · USExposure
  11. Prototypes glass interposers and glass-core processing; large-scale package adoption remains ahead

    emerging
    5201.T · TSE · JPExposure
  12. Supplies precision glass carriers and panels that withstand thinning, microstructuring and metallization

    niche
    Private · DEExposure
  13. Supplies NEXAR LIDE laser microstructuring to form through-glass vias in package panels

    leader
    LPK.DE · XETRA · DEExposure
  14. Supplies laser TGV formation and TGV optical inspection equipment for glass-core packaging

    challenger
    161580.KQ · KOSDAQ · KRExposure
  15. Develops laser-drilled and etched TGV glass substrates; packaging qualification precedes commercial volume

    emerging
    204270.KQ · KOSDAQ · KRExposure
  16. Combines laser modification, wet etching, Cu plating and CMP to fabricate through-glass-via package cores

    emerging
    089010.KQ · KOSDAQ · KRExposure
  17. Licenses M-Series fan-out and Adaptive Patterning to correct die shifts during panel package production

    niche
    Private · USExposure
  18. Combines JetStep, Firefly and StepFAST tools for panel exposure, inspection and die-shift correction

    major
    ONTO · USExposure
  19. Supplies DSP-100 digital exposure designed for 600mm-square advanced packaging panels

    emerging
    7731.T · TSE · JPExposure
  20. Via Toray Engineering, supplies UC5000 panel bonders supporting TCB, DAF and hybrid bonding

    niche
    3402.T · TSE · JPExposure
  21. Develops TGV glass-core substrates on its Kuki pilot line; samples precede a targeted fiscal-2028 production ramp

    emerging
    7912.T · TSE · JPExposure
  22. Develops TGV glass cores and glass interposers with cavities for large heterogeneous packages

    emerging
    7911.T · TSE · JPExposure
  23. Supplies panel deposition and DLT patterning; acquired NEXX adds large-area packaging metallization tools

    major
    AMAT · USExposure
  24. Supplies FLEE-TGV laser modification and etch-assisted drilling for dense through-glass vias in package cores

    niche
    002008.SZ · SZSE · CNExposure

Sources: global.dnp, toppan.com, hkexnews.hk, hanslaserus.com, sumitomo-chem.co.jp, tomshardware.com

Glossary

CoWoS
TSMC chip-on-wafer-on-substrate packaging connects logic dies and HBM through an interposer.
TCB
Thermo-compression bonding joins dies using controlled heat, pressure and precise alignment.
Hybrid bonding
Direct dielectric and copper connections join dies without conventional solder bumps.
OSAT
An outsourced semiconductor assembly and test company packages and tests chips for other firms.
TGV
Through-glass vias carry electrical connections through a glass package core.
RDL
Redistribution layers reroute chip contacts to the connections needed by a package.

Heat, spend, exposure and shares are editorial estimates. How to read the map ↗