market & technology report led manufacturing · market & technology report. report outline...

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LED substrate is one of the key topics impacting the LED Front-End industry in the following ways: • Increased demand for larger size sapphire wafers with big players (such as LG, Sharp or Osram) moving to 6” wafers and Taiwanese players moving to 4” wafers. • Increased demand for PSS that has now become mainstream in the industry (87% share as of Q1-2014), even if some questions remain concerning key patent holders’ strategies. • Development of GaN-on-Si and GaN-on- GaN LEDs with both technologies having begun mass production in some companies (such as Soraa for GaN, or Toshiba for Si). However, market penetration of these alternative substrates will be secondary to future improvements in terms of performance and cost. Otherwise, GaN-on-Si and GaN-on-GaN LEDs will not be able to fully compete with sapphire-based LEDs. The impact of the sapphire industry on the LED industry is likely to become bigger in the future because of the recent partnership between GTAT and Apple (Q4-2013) to set up a large sapphire manufacturing plant ($1 billion). The plant, having a rough capacity of 2 times the current qualified sapphire capacity, could totally modify the structure and evolution of the sapphire and LED industries in the next few years. The report presents all recent technological trends of LED Front-End manufacturing, detailing evolutions at substrate, epitaxy, lithography, plasma etching and deposition, PVD and testing levels. LED epitaxy has also been of central interest to the LED Front-End industry that has seen the entry of several new players in the MOCVD reactor market since 2011 / 2012. Even if increased competition has not really affected the market’s top leaders (Aixtron, Veeco and Taiyo Nippon Sanso), it has forced them to accelerate development of the next generation of MOCVD tools to lever market entry barriers. This generation of MOCVD reactors should focus on Cost of Ownership, see the emergence of enhanced designs, with new heating systems, new gas-flow designs, and increased automation (…). Regarding lithography, plasma etching and deposition, PVD and testing, mostly incremen- tal evolutions have occurred (such as impro- vement of throughput, and ASP decrease…) reflecting a saturation in technological deve- lopment. The report presents a detailed analysis of LED epitaxy, highlighting main trends at process, technology and equipment levels. LED MANUFACTURING LED Front-End Manufacturing Trends report SUBSTRATES ARE SHAPING THE LED FRONT-END INDUSTRY INCREASED COMPETITION WILL ACCELERATE NEW LED MOCVD REACTOR DEVELOPMENT Market & Technology Report REPORT OUTLINE • Title: LED Front-End Manufacturing Trends report • April 2014 • Market & Technology Report • PDF file • €5,990 - Multi user license (300+ slides) • €3,990 - One user license (300+ slides) KEY FEATURES OF THE REPORT • Detailed analysis of key constituents of LED die • Detailed technical analysis of the main LED Front-End manufacturing process steps and recent evolutions • Technology roadmap for adoption of new technologies • LED market metrics (units and value): Forecast 2014-2019 RELATED REPORTS • LED Front-End Equipment Market • Sapphire Applications and Market: From LED to Consumer Electronics • LED Packaging 2013 • Status of the LED Industry • LED Phosphors Find all our reports on www.i-micronews.com Commercial status of LEDs based on different substrates (as of Q1-2014) (Yole Développement, April 2014) A comprehensive survey of LED Front-End manufacturing, covering main process steps and technological trends Si Substrate Sapphire Substrate SiC Substrate GaN Substrate Soraa Seoul Semiconductor Panasonic Cree Toshiba Plessey Semiconductors Lattice Power EVERYONE ELSE Commercial products only

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Page 1: Market & Technology Report LED MANUFACTURING · Market & Technology Report. REPORT OUTLINE ... OBJECTIVES OF THE REPORT. Structure of Flip-Chip LED (Yole Développement, ... 2013

LED substrate is one of the key topics impacting the LED Front-End industry in the following ways:

•Increaseddemandforlargersizesapphirewafers with big players (such as LG, Sharp or Osram) moving to 6” wafers and Taiwanese players moving to 4” wafers.

•Increased demand for PSS that has nowbecome mainstream in the industry (87% share as of Q1-2014), even if some questions remain concerning key patent holders’ strategies.

•Development of GaN-on-Si and GaN-on-GaNLEDswithboth technologieshavingbegunmass production in some companies (such as SoraaforGaN,orToshibaforSi).However,marketpenetration of these alternative substrates will be secondary to future improvements in terms ofperformanceandcost.Otherwise,GaN-on-Si

and GaN-on-GaN LEDswill not be able to fully

compete with sapphire-based LEDs.

The impact of the sapphire industry on the LED

industry is likely to become bigger in the future

because of the recent partnership between GTAT

and Apple (Q4-2013) to set up a large sapphire

manufacturing plant ($1 billion). The plant,

having a rough capacity of 2 times the current

qualifiedsapphirecapacity,could totallymodify

the structure and evolution of the sapphire and

LED industries in the next few years.

The report presents all recent technological

trends of LED Front-End manufacturing, detailing

evolutions at substrate, epitaxy, lithography,

plasmaetchinganddeposition,PVDandtesting

levels.

LED epitaxy has also been of central interest to the LED Front-End industry that has seen the entry of several new players in the MOCVD reactor market since 2011 / 2012.Even if increased competition has not really affected the market’s top leaders (Aixtron, VeecoandTaiyoNipponSanso),ithasforcedthem to accelerate development of the next generation of MOCVD tools to lever marketentry barriers. This generation of MOCVDreactors should focus on Cost of Ownership, see the emergence of enhanced designs, with

new heating systems, new gas-flow designs,and increased automation (…).

Regarding lithography, plasma etching and deposition,PVDandtesting,mostlyincremen-tal evolutions have occurred (such as impro-vement of throughput, and ASP decrease…)reflectinga saturation in technological deve-lopment.

The report presents a detailed analysis of LED epitaxy, highlighting main trends at process, technology and equipment levels.

LED MANUFACTURING LED Front-End Manufacturing Trends report

SUBSTRATES ARE SHAPING THE LED FRONT-END INDUSTRY

INCREASED COMPETITION WILL ACCELERATE NEW LED MOCVD REACTOR DEVELOPMENT

Market & Technology Report

REPORTOUTLINE•Title:LEDFront-End Manufacturing Trends report•April2014•Market&TechnologyReport•PDFfile•€5,990-Multiuserlicense (300+ slides)•€3,990-Oneuserlicense (300+ slides)

KEYFEATURESOFTHEREPORT•Detailedanalysisofkey constituents of LED die•Detailedtechnicalanalysis of the main LED Front-End manufacturing process steps and recent evolutions•Technologyroadmapfor adoption of new technologies•LEDmarketmetrics(unitsand value):Forecast2014-2019

RELATEDREPORTS•LEDFront-EndEquipment Market•SapphireApplicationsand Market: From LED to Consumer Electronics •LEDPackaging2013•StatusoftheLEDIndustry•LEDPhosphors

Find all our reports on www.i-micronews.com

Commercial status of LEDs based on different substrates (as of Q1-2014)

(Yole Développement, April 2014)

A comprehensive survey of LED Front-End manufacturing, covering main process steps and technological trends

Si Substrate

Sapphire Substrate

SiC Substrate

GaN Substrate

Soraa

Seoul Semiconductor

Panasonic

Cree

Toshiba

Plessey Semiconductors

Lattice Power

EVERYONE ELSE

Commercial products only

Page 2: Market & Technology Report LED MANUFACTURING · Market & Technology Report. REPORT OUTLINE ... OBJECTIVES OF THE REPORT. Structure of Flip-Chip LED (Yole Développement, ... 2013

LED Front-End Manufacturing Trends report

As flip chip graduallymatures, LEDmanufacturersare actively developing this technology as it provides several advantages: larger light-emitting area and highest luminosity, better heat dissipation, adjustable dimensions and no wire-bonding.

While this design was mostly in the hands of a few big LED manufacturers (such as Cree or Lumileds), in 2013, Taiwanese manufacturers also started to develop it (Epistar, FOREPI and Genesis Photonicsmostly).

In 2014, flip-chip technology should also make itsway into the middle power LED market. Lumileds announced in Q3-2013 that it plans to introduce flip-chip technology into the middle power LEDmarket; as the devices in this market have drawn the most attention from the 2013 general lighting applications market. Indeed, middle power LEDs(following the 2011 / 2012 overcapacity) have become mainstream in interior lighting applications.

The report presents a detailed analysis of each LED Front-End manufacturing process step with additional highlights on LED chip design, key constituents of LED chip and main light-extraction techniques.

LED manufacturing still uses methods and practices that would be considered outdated in most semiconductor industries (e.g., manual wafer handling, with operators moving wafers with tweezers in (not so) clean rooms…).However,emergence of LED “giants” (such as Cree, Osram, Lumileds, Samsung or LG) have facilitated and speed upadoptionofmanufacturingparadigmsfromtheICindustry to reduce overall manufacturing cost and increase product quality:

•Batchprocessing→ Single wafer.

•Automation,clustertools,fullcassette to cassette (…).

•Statisticalprocesscontrol,defect

management (…).

•ReductionofSKU.

•EnterpriseManagementSystems(EMS).

As a matter of fact, the gap will widen between Tier-

1s and other players, pushing forward for industry

consolidation.

The report presents recent trends of the LED market,

detailing evolution of the industry at market and

manufacturing levels.

The objectives of the report are to:

•BetterunderstandprocessflowandtechnologicaltrendsinLEDFront-Endmanufacturing.

•BetterunderstandtheimportanceofcostreductioninLEDFront-Endmanufacturing.

•Evaluateemergingsubstrates/technologies(GaN-on-GaNLEDsandGaN-on-SiLEDs).

COMPANIES CITED IN THE REPORT (non-exhaustive list)ACC Silicon, Accretech, Advanced Dicing Technology, Advanced System Technology (AST), Advatool Semiconductor,Aixtron,ALSI,Altatech(Soitec),AMTechnology,AMEC,ANDCorporation,AppliedMaterials,APT,Arima,ASMPacificTechnology,ASML,Astri,Aurotek,Autec,Azzurro,Bayer,BeijingYuji,Bergquist,Bridgelux,Bruker,Canon,CascadeMicrotech,ChinaElectronicsTechnologyGroupCorporation(CETC),Chroma,Corial,Cree,CrystalAppliedTechnology(SAS),CrystalOptech,Crystalwise,DaiNipponKaken(DNK),DaiNipponScreenMfg,Daitron,DelphiLaser,Denka,Disco,DowCorning,DowElectronicMaterials,Dynatex,EdisonOpto,Epiluxy,Epistar,Eplustek,ESI,Eulitha,EVGroup(EVG),Evatec,EverlightElectronics,Fittech, Formosa Epitaxy (Forepi), Four N4, Fraunhofer IZM, FSE Corporation (Fulintec), Galaxia, GE,GloAB,HansLaser,HansolTechnics,Hauman,Heliodel,HitachiCable,Huga,Hybond,IljinDisplay,IMEC,Intematix, InVacuo, Ismeca, JCT, JPSA, JTCorp, JusungEngineering,K&S,KLATencor, LatticePower,Laurier,Laytech,LGInnotek,Lightscape,LightwavePhotonic,Litec,Loomis,LuminusDevices,LWB,MaxisCo,Merk/Litec,Mitsubishi,MitsubishiDiamondIndustrial,MolecularImprint,Momentive,Monocrystal,MPI,Nanoco,Nanometrics,Nanosys,Nichia,NihonGartner,Nikon,NNCrystal,NorthMicroelectronics...

FLIP-CHIP TECHNOLOGY AS THE NEW BATTLEGROUND

FROM TECHNOLOGY-ORIENTED TO COST-ORIENTED MANUFACTURING

OBJECTIVES OF THE REPORT

Structure of Flip-Chip LED

(Yole Développement, April 2014)

n-GaN layer

Active layers

p-GaN

n- electrode

p- electrode

Solder bump

Metal Metal

Chip

Package substrate

Metal Mirror

Sapphire substrate

Page 3: Market & Technology Report LED MANUFACTURING · Market & Technology Report. REPORT OUTLINE ... OBJECTIVES OF THE REPORT. Structure of Flip-Chip LED (Yole Développement, ... 2013

Market & Technology Report

•Objectivesofthereport 8•Companyindex&glossary 9•Executivesummary 11•LEDmarkettrends 30>HistoryofLEDindustry> PackagedLEDrevenueforecastbyapplication> LED adoption rate - 2013 vs. 2020> Recent trends>PackagedLEDpricetrends> LED die surface forecast by application>GaNreactorcapacity-Geographictrends> LED reactors -Geographictrends&impactonglobal demand -GaNreactorcapacityvs.demand

•KeyconstituentsofLEDdie 42> Synthesis> Overview> Mirrors - Overview - Resonant cavity LEDs>Pads,electrodesandcontacts - Overview -Transparentcontactlayers-ITOand alternatives - Deposition process - Trends> Dielectric layers -Introduction -Passivation - Trends

•LEDdiemanufacturing 61> Synthesis> LED manufacturing yield - Overview - Focus on binning yields - Cost aspects> Cost structure of lighting products> The path to cost reduction> 1W packaged LED cost analysis - Overview - Consumables and labor - Equipment cost>GaNLEDchipdesign - Simple MESA - Flip Chip (FC) -VerticalThinFilm(VTF) - Thin Film Flip Chip (TFFC) -VerticalThinFilmwithVias(VTFV) -Trend-IncreaseofFlipChipTechnology> LED manufacturing process overview>Front-Endmanufacturingprocessflow - Example - MESA structure -Example-VTFstructure - Other steps

•Lightextractiontechniques 84> LED chip patterning> Substrate patterning or die shaping>Novelchipgeometries

•LEDsubstrates 89>Introduction>Sapphire-basedLED-Breakdownby epitaxial material (2008-2020)>FocusonGaNandSisubstrates>Penetrationratebysubstratetype> Sapphire substrate -WaferASP - Diameter trends

-PatternedSapphireSubstrate(PSS) - Market forecast and trends> Si substrate -Introduction -Benefits - Challenges - Chip design -HowtogrowLEDstructuresonSi? -PotentialimpactofusingSiforLED manufacturing - Conditions for success -Performanceandcommercialstatus -Binningyields - CMOS compatibility - Si vs. sapphire - LED die cost simulations - Overview of potential cost reduction claims - Market players - Recent comments -Realityorfiction? - Scenarios of evolution>GaNsubstrate -Introduction-Droopeffect -Benefits - Challenges - Applications overview - GaNvs.sapphire-LEDdiecostsimulations - Status

•LEDepitaxy 154> Synthesis>GaNLEDepitaxy -IntroductiontoMOCVD -MOCVDreactorsystemoverview -GaNLEDstructures -GaNLEDepitaxychallenges -PackagedLEDcoststructure - Cost of ownership - Focus on binning yields - Focus on in situ metrology - Focus on LED epitaxy cycle time -Focusonbatchsize - Focus on growth rate -Focusonprecursorefficiency - Towardlargerdiameterwafers–Incentive -NextgenerationMOCVDreactor> MetalOrganic (MO) precursors -Introduction - TMG -TMI -PurityAspects>NanowireLEDs -Introduction - Main players - Conclusion

•Lithography 212> Synthesis> LED chip manufacturing - Main LED lithography steps - Other LED lithography steps - Example of a vertical LED - Requirements and challenges - Lithography techniques for LED - Focus on wafer bowing - Focus on mask and photoresist - Legacy lithography tools for LED manufacturing - Dedicated lithography tools for LED manufacturing>PSSmanufacturing -OverviewoflithographyforPSS

-Nano-ImprintLithography(NIL) -Hardstampsvs.softstamps - Displacement Talbot Lithography (DTL) - Advanced Mask Aligner Lithography (AMALITH) - Current status

•Plasmaetchinganddeposition 242> Synthesis> Overview of etching techniques>Plasmaetching - Overview -Illustrations>ReactiveIonEtching(RIE) - Overview -InductivelyCoupledPlasma-RIE(ICP-RIE)> LED etching requirements>LEDetchingspecificities> Dielectric layer deposition - Overview - Requirements - LED manufacturing - Alternative technologies for passivation>Processcontrolandmetrology - Tool-based -Plasmametrology - Optical measurement - Conclusion> Reactor cleaning - Etching tools -Depositiontools(PECVD)>ExamplesofetchingandPECVDequipment for LED manufacturing> Other plasma processes in LED manufacturing - Surface cleaning

•PhysicalvapordepositionforTCL and metals 268

> Synthesis> Transparent contact layer - Overview - Critical parameters - Deposition technologies> Metal deposition - Overview - MESA and Flip Chip structure -VerticalthinFilmstructures> TCL and metal deposition equipment - Automation - Main suppliers - LED-dedicated system suppliers - Examples

•Testingandbinning 284> Synthesis>Introduction>OverviewofLEDtestingandsorting/ binning>ExampleoftestingworkflowinLED manufacturing> Measurement challenges> Wafer level and die testing> Optical inspection and probing>Sorting&binning> Equipment, capex and throughput> Examples - Optical and visual inspection - Wafer, die testers and sorters> Software

•Conclusion 299•AboutYoleDéveloppementand LED activity 303

TABLE OF CONTENTS

AUTHOR

Pars Mukish holdsamasterdegreeinMaterialsScience&PolymersandamasterdegreeinInnovation&TechnologyManagement(EMLyon–France).HeworksatYoleDéveloppementasSeniorMarketandTechnologyAnalystinthefieldsofLED, Lighting Technologies, Compound Semiconductors and OLEDs to carry out technical, economic and marketing analysis. Previously,hehasworkedasMarketing&Techno-EconomicAnalystattheCEA(FrenchResearchCenter).

Page 4: Market & Technology Report LED MANUFACTURING · Market & Technology Report. REPORT OUTLINE ... OBJECTIVES OF THE REPORT. Structure of Flip-Chip LED (Yole Développement, ... 2013

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Page 5: Market & Technology Report LED MANUFACTURING · Market & Technology Report. REPORT OUTLINE ... OBJECTIVES OF THE REPORT. Structure of Flip-Chip LED (Yole Développement, ... 2013

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4.8 The Seller does not make any warranties, express or implied, including,without limitation,thoseofsaleabilityandfitnessforaparticularpurpose,withrespecttotheProducts.AlthoughtheSellershalltakereasonablestepstoscreenProductsforinfection of viruses, worms, Trojan horses or other codes containing contaminating or destructive properties before making the Products available, the Seller cannot guaranteethatanyProductwillbefreefrominfection.

5. FORCE MAJEURE The Seller shall not be liable for any delay in performance directly orindirectlycausedbyorresultingfromactsofnature,fire,flood,accident, riot, war, government intervention, embargoes, strikes, labordifficulties,equipmentfailure,latedeliveriesbysuppliersorotherdifficultieswhicharebeyondthecontrol,andnotthefaultof the Seller.

6. PROTECTION OF THE SELLER’S IPR 6.1All the IPR attached to the Products are and remain the

property of the Seller and are protected under French and international copyright law and conventions.

6.2TheBuyeragreednottodisclose,copy,reproduce,redistribute,resell or publish the Product, or any part of it to any otherpartyother thanemployeesof itscompany.TheBuyershallhavetherighttousetheProductssolelyforitsowninternalinformationpurposes.Inparticular,theBuyershallthereforenotusetheProductforpurposessuchas:•Informationstorageandretrievalsystems;•Recordingsandre-transmittalsoveranynetwork(including

any local area network); •Use in any timesharing, service bureau, bulletin board or

similar arrangement or public display; •Posting any Product to any other online service (includingbulletinboardsortheInternet);

•Licensing,leasing,selling,offeringforsaleorassigningtheProduct.

6.3The Buyer shall be solely responsible towards the Seller ofall infringements of this obligation, whether this infringement comesfromitsemployeesoranypersontowhomtheBuyerhas sent theProductsand shall personally take careof anyrelatedproceedings,andtheBuyershallbearrelatedfinancialconsequences in their entirety.

6.4TheBuyershalldefinewithinitscompanypointofcontactforthe needs of the contract. This person will be the recipient ofeachnewreport inPDF format.Thispersonshallalsoberesponsible for respect of the copyrights and will guaranty that theProductsarenotdisseminatedoutofthecompany.

6.5Inthecontextofannualsubscriptions,thepersonofcontactshalldecidewhowithintheBuyer,shallbeentitledtoaccesson linethereportsonI-micronews.com.Inthisrespect,theSellerwillgivetheBuyeramaximumof10password,unlessthe multiple sites organization of the Buyer requires morepasswords. The Seller reserves the right to check from time to time the correct use of this password.

6.6In the case of amultisite,multi license, only the employeeof the buyer can access the report or the employee of the companies in which the buyer have 100% shares. As a matter of fact the investor of a company, the joint venture done with a third party etc..cannot access the report and should pay a full license price.

7. TERMINATION 7.1IftheBuyercancelstheorderinwholeorinpartorpostpones

thedateofmailing, theBuyer shall indemnify theSeller forthe entire costs that have been incurred as at the date of notification by the Buyer of such delay or cancellation. Thismay also apply for any other direct or indirect consequential loss that may be borne by the Seller, following this decision.

7.2In the event of breach by one Party under these conditionsortheorder,thenon-breachingPartymaysendanotificationto the other by recorded delivery letter upon which, after a period of thirty (30) days without solving the problem, the non-breachingPartyshallbeentitledtoterminateallthependingorders, without being liable for any compensation.

8. MISCELLANEOUS AlltheprovisionsoftheseTermsandConditionsareforthebenefitof the Seller itself, but also for its licensors, employees and agents. Each of them is entitled to assert and enforce those provisions againsttheBuyer.Any notices under these Terms and Conditions shall be given in writing.TheyshallbeeffectiveuponreceiptbytheotherParty.The Seller may, from time to time, update these Terms and ConditionsandtheBuyer,isdeemedtohaveacceptedthelatestversion of these terms and conditions, provided they have been communicated to him in due time.

9. GOVERNING LAW AND JURISDICTION 9.1AnydisputearisingoutorlinkedtotheseTermsandConditions

or to any contract (orders) entered into in application of these Terms and Conditions shall be settled by the French Commercial Courts of Lyon, which shall have exclusive jurisdiction upon such issues.

9.2FrenchlawshallgoverntherelationbetweentheBuyerandtheSeller, in accordance with these Terms and Conditions.

TERMS AND CONDITIONS OF SALES