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Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1 www.we-online.de

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Page 1: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip-on-Board – The Tiny Wire Bonding 101

Würth Elektronik Circuit Board Technology

11.12.2014 Seite 1 www.we-online.de

Page 2: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Your speaker

www.we-online.deSeite 211.12.2014

Dipl.-Ing. (FH), MBA Philipp Conrad

At Würth Elektronik CBT since 2008

Product Manager Wire BondingTechnology

Cooperation with B&F Bonding since 2010

Page 3: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Agenda

Chip / Bare Die

Gold und Aluminium Wire Bonding

PCB Design

Protection of Die and Wirebonds

www.we-online.deSeite 311.12.2014

Page 4: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Agenda

Chip / Bare Die

Gold and Aluminium Wire Bonding

PCB Design

Protection of Die and Wirebonds

www.we-online.deSeite 411.12.2014

Page 5: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Comparison: Housed Chip / Bare Die

11.12.2014 Seite 5 www.we-online.de

Substrate

QFP

Wire bonding on a Substrate

Substrate

Page 6: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 6 www.we-online.de

Source of the Pictures: B&F Bonding

Die-Pickup from a wafer

Page 7: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 7 www.we-online.de

Source of the Pictures: B&F Bonding

Die Pick-up

Pick-up froma Waffle

Pack

Page 8: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 8 www.we-online.de

Source of the Pictures: B&F Bonding

Pick-up from WP

Fixation withVacuum

Page 9: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 9 www.we-online.de

Source of the Pictures: B&F Bonding

Fixation withVacuum

Gluedispensing

Page 10: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 10 www.we-online.de

Source of the Pictures: B&F Bonding

GlueDispensing

Positioningof the die

Page 11: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Chip / Bare Die

11.12.2014 Seite 11 www.we-online.de

Source of the Pictures: B&F Bonding

Positioningof the die

Die-Bonding

Page 12: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Agenda

Chip / Bare Die

Gold and Aluminium Wire Bonding

PCB Design

Protection of Die and Wirebonds

www.we-online.deSeite 1211.12.2014

Page 13: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Gold Wire Bonding

� Gold wire bonding

Thermosonic

Ball-Wedge-Bonding

– LED-Applications

– Sensoric -Applications

11.12.2014 Seite 13 www.we-online.de

Source of the Pictures: B&F Bonding

Ball

Wedge

Page 14: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Gold Wire Bonding

11.12.2014 Seite 14 www.we-online.de

Source of the Pictures: B&F Bonding

Page 15: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Aluminum Wire Bonding

11.12.2014 Seite 15 www.we-online.de

� Aluminium wire bonding

Ultrasonic

Wedge-Wedge-Bonding

– Special-SensoricApplications

– Chip to Chip Connection

Quelle der Bilder: B&F Bonding

Wedge

Page 16: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Aluminium Wire Bonding

11.12.2014 Seite 16 www.we-online.de

Source of the Pictures: B&F Bonding

Page 17: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Gold Wire Bonding: Stud Bumps

11.12.2014 Seite 17 www.we-online.de

Source of the Pictures: B&F Bonding

Page 18: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Common Wire Bonding Surfaces

� Gold wire bonding

– ENEPIG

• Electroless Nickel

• Electroless Palladium

• Immersion Gold

11.12.2014 Seite 18 www.we-online.de

Cu

NiPd

0,04 – 0,08 µm

0,1– 0,2 µm

4 – 7 µm

Au

Cu

NiAu 0,05 – 0,1 µm

4 – 7 µm

� Aluminium wire bonding

– ENIG

• Electroless Nickel

• Immersion Gold

Page 19: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Agenda

Chip / Bare Die

Gold and Aluminium Wire Bonding

PCB Design

Protection of Die and Wirebonds

www.we-online.deSeite 1911.12.2014

Page 20: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design

11.12.2014 Seite 20 www.we-online.de

Correct PCB design forCoB

SoldermaskArea

CorrectPositioning

of SMD-Parts

Gold orAluminium

- Wire

Page 21: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design – Aluminium Wire

11.12.2014 Seite 21 www.we-online.de

Page 22: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design – Gold Wire

11.12.2014 Seite 22 www.we-online.de

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PCB Design– Gold Wire

11.12.2014 Seite 23 www.we-online.de

Main difference: Orientation of the bond pads on the substrate!

Page 24: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design

11.12.2014 Seite 24 www.we-online.de

Soldermask should be removed in one block!

Page 25: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design– Placement of the SMD Parts

11.12.2014 Seite 25 www.we-online.de

PCB

Suggestion:NO SMD Parts

Page 26: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design– Placement of the SMD parts

11.12.2014 Seite 26 www.we-online.de

PCB

Bond tool for fixation of the PCB

Page 27: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design– Placement of the SMD parts

11.12.2014 Seite 27 www.we-online.de

PCB

Bond tool for fixation of the PCB

Page 28: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

PCB Design – Tools for Wirebonding

11.12.2014 Seite 28 www.we-online.de

Page 29: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Agenda

Chip / Bare Die

Gold und Aluminium Wire Bonding

PCB Design

Protection of Die and Wirebonds

www.we-online.deSeite 2911.12.2014

Page 30: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Substrate

Protection of Die and Wirebonds

11.12.2014 Seite 30 www.we-online.de

Substrate

Globtop

Lensholder

Page 31: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Samples

11.12.2014 Seite 31 www.we-online.de

Page 32: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Samples

11.12.2014 Seite 32 www.we-online.de

Page 33: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Application Example

www.we-online.deSeite 3311.12.2014

Page 34: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Summary

11.12.2014 Seite 34 www.we-online.de

Chip / Bare Die =

unpackedsemiconductor

Contacting thedie with glue

Electricalconnectionwith wirebonding

Two wirebonding

technologies, gold andaluminum

Special pcbdesign

Protection ofthe die andwires withglobtop or

mechanicalcomponents

Page 35: Chip-on-Board – The Tiny Wire Bonding 101 - we … · Chip-on-Board – The Tiny Wire Bonding 101 Würth Elektronik Circuit Board Technology 11.12.2014 Seite 1

Summary

High accuracy placement compared to SMD solder process

High accuracy placement of the bare die in following sectors:

• Optoelectronics

• Sensor technology

• Medicine technology

Flexible design

Advantages of wirebonding

• Miniaturisation in X/YZ axis

• Very good electrical connection

• Good mechanical and thermal stabilty

11.12.2014 Seite 35 www.we-online.de

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11.12.2014 Seite 36 www.we-online.de

Thanks for your attention!

Philipp ConradWÜRTH ELEKTRONIK GmbH & Co. KGProcukt Management Wire bondingCircuit Board TechnologyM.:+49 175 2271 600E. [email protected]. www.we-online.de