• Like
  • Save
Flexible Electronics
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.


Presented for TTI Vanguard "Shift Happens" conference (http://bit.ly/TTIVshifthappens) visit to PARC, this is an overview of an all-printed and therefore low-cost, disposable sensor that conforms to …

Presented for TTI Vanguard "Shift Happens" conference (http://bit.ly/TTIVshifthappens) visit to PARC, this is an overview of an all-printed and therefore low-cost, disposable sensor that conforms to the curvature of a helmet.

Developed for DARPA to monitor soldiers' blast exposure and prevent traumatic brain injury, the technology can be applied to multiple biomedical and other applications.

Published in Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads


Total Views
On SlideShare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Printed Flexible Electronics and Sensors Ana Claudia Arias, Ph.D. Printed Electronic Devices Electronic Materials and Devices Laboratory  s =  sl +  l . cos   s =  sl +  l . cos 
  • 2. Motivation for printed flexible electronics
    • Wish list
    • Conformal
    • Foldable
    • Unbreakable
    • Light weight
    • Thin
    • Less expensive – high performance
    • Unique and customized
    • New product development
    • Science/Engineering argument
    • New materials
    • New interfaces
    • New problems
    • New physics, new chemistry
    • New device fabrication techniques – cool engineering
    • Many applications: nano, solar, bio
    • Scientific breakthrough
    • Commercialization
    • Materials, processing and flexible substrate integration can be a challenge
    • Materials stability and performance inferior to well established silicon industry – first product needed to establish credibility
    • Manufacturing tools need to be adapted to handle flexible substrates
    • Risk takers and early adopters needed
    • No flexible electronic product commercially available
    • Where flexible electronics is really needed/wanted?
  • 3. Amazon Kindle A lot of activity on displays: products on the market
    • Several products available
    • All rigid products
    • Backplane based on a-Si technology
    • Display media from E-ink
    • Low power consumption
    • Content oriented business model most successful
  • 4.
    • Several flexible display demonstrations
    • Full color and monochromatic
    • Multiple backplanes and front planes used
    • Integration with a product needed
    Flexible display demonstrators PARC Lucent
  • 5. Printed electronics applications
    • Some examples
    Duracell: Battery tester Cypak: Intelligent Pharmaceutical Packaging PolyIC: RFID CSG: via etching Plastic Logic: e-paper CDT: OLED displays Konarka: Solar cell Pelikon: EL displays Power Paper: battery
  • 6. Approaches: From inorganic rigid materials to flexible systems Courtesy of Prof. John Rogers
    • Inorganic-based flexible structures:
    • New processing methods allow fabrication of flexible structures
    • Control of materials performance under low temperature processing
    • Stamping and pick and place allow large area fabrication
    • High performance systems
  • 7. Approaches: Organic and inorganic materials
    • Processed at low temperature
    • Many materials sputtered at room temperature
    • Others can be processed from solution
    • Organic materials are inherently flexible
    • Compatible with flexible substrates
    • Opens up new manufacturing opportunities
  • 8.
      • New and unique science problems
      • Lower capital investment
      • Large area capability
      • Rigid or flexible substrates
      • Extremely thin
      • Environmentally friendly
      • Less photolithography, vacuum
      • Short turnaround/cycle time
      • Customization ease
    PARC’s approach: Solution-based electronics Electronic components printed like documents are printed
  • 9. From photolithography to additive processing Many processing steps and a lot of materials waste One step for patterning and deposition Additive printing Photo - lithography resist Deposit film resist Deposit film
  • 10. Thin-film transistors are the building blocks for electronics
    • TFT is a switch!
    • high I on (~mA)
    • low I off (~pA)
    semiconductor Display pixel via layer drain pad gate line media dielectric data line Top view gate line data line pixel pad ~ 300 mm TFT
  • 11. All additive printed arrays
      • PEN substrate
      • Printed nanoparticle metals
      • Polymer dielectric
      • Polymer semiconductor (PQT + others)
      • Reflective display format
    Gate line Data line Semiconductor Pixel pad 340 um 680 um PARC has demonstrated all-printed TFT backplanes for displays
  • 12. Technology platform creation: Working with clients to accelerate their entry to market
  • 13. Sensor tape project
    • $5M funding for 3 year project to develop:
    • Printed sensors: accelerometers, acoustic, pressure and temperature
    • Light sensors
    • Non-volatile printed memory
    • Printed CMOS
    • Deliver prototype capable of monitoring mechanical shock . Data is stored in the printed memory
    • This technology can be used to monitor vital signs in patients – civilian applications
  • 14. Circuit integration with printed sensors MEMS sensors Printed organic amplifiers After write V sd = -5,-20V Pressure signal after amplifier Pressure signal without amplifier Use printed amplifier to boost write voltage into memory cell V DD V out V in bias Switch TFTs memory TFT
  • 15. To subscribe to the PARC Innovations Update e-newsletter or blog, or to follow us on Twitter, go to http://www.parc.com/about/subscribe.html For more information, please contact: Ana Arias ana.arias@ parc.com Jennifer Ernst, Business Development [email_address]