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Department of Electronics and Telecommunication Engineering
Azhar.A.SyedUnder the guidance of prof.H.M.Raza
Presents a Seminar on:
“Flexible Electronics”
FLEXIBLE ELECTRONICS
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Outline:• Introduction to Flexible Electronics• Focused areas:
• Flexible Circuits boards (FCB’s)• Flexible electronic components• Flexible displays
• Manufacturing technology in brief• Future of flexible electronics• Applications• Advantages and disadvantages• Conclusion
FLEXIBLE ELECTRONICS
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What is flexible electronics ?
Flexible electronics, also known as flex
circuits, is a technology for assembling
electronic circuits by mounting electronic
devices on flexible plastic substrates.
FLEXIBLE ELECTRONICS
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Flexible Circuit boards
FLEXIBLE ELECTRONICS
Flex circuits are made up of
flexible plastic substrate
usually polyimide, Polyester or
thin sheets of glass
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Flexible electronic components
Electronic components such as transistors
are being made from silicon nanomembrane
usually called TFT’s(thin film transistors).
Flexible resistors & capacitors structures
are shown diagrammatically usually called thin
flim resistors and thin flim capacitors
FLEXIBLE ELECTRONICS
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Resistor Capacitor
FLEXIBLE ELECTRONICS
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Lithium-ion flexible battery
Non volatile Memories
FLEXIBLE ELECTRONICS
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Flexible Displays
Organic light-emitting diodes (OLEDs) are
normally used instead of a back-light for flexible
displays.
FLEXIBLE ELECTRONICS
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Manufacturing of flexible circuits & devices
For the manufacturing of flexible electronics
“Roll to Roll” (R2R) processing inkjet printing
and soft lithography process is used.
FLEXIBLE ELECTRONICS
Steps of R2R processing
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Layers materials and their thicknessBase material or substrate
1.Flexible polymer flim2. Polyethylene terephthalate3. Thin glass sheet
12-125 µm
Conductive path 1. Copper foil2. Polyester3. Graphene
200 nm
FLEXIBLE ELECTRONICS
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Market Growth• The market for flexible, printed, and organic large-area electronics
is rapidly growing. Currently estimated at over $200M, the global
market is expected to increase to a $800M market by 2020.
FLEXIBLE ELECTRONICS
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Future Flexible Electronic products
FLEXIBLE ELECTRONICS
1 3
2
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Applications• Automotive field.
• Space crafts.
• Foldable displays.
• Military.
FLEXIBLE ELECTRONICS
Flexible solar cells
Flexible outwears
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Samsung key note CES
FLEXIBLE ELECTRONICS
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Stretchable Lithium ion battery
FLEXIBLE ELECTRONICS
Developed by University of llinois at Urbana
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ADVANTAGES
light weightSmaller dimensions
requiredSpace savingFoldable and bendable
DISADVANTAGES
Initial investment may be expensive
Integration of components would be challenge for engineers
Precision machines required
FLEXIBLE ELECTRONICS
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ConclusionFlexible electronics in future will play a part in
field of security, entertainment and may lead to
innovative applications
The demand for flexible electronic products at
present may not be noticed but upto 2020 there
would be huge demand and preference will be given
to the flexible products in market
FLEXIBLE ELECTRONICS
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References
• [1] www.wikkipedia.org.in/flexibleelectronics
• [2] "Printed Circuit Techniques" by Cledo Brunetti and Roger W. Curtis (National
Bureau of Standards Circular 468 first issued 15 November 1947)
• [3] Gleskova, H., Wagner, S., Gasˇpar k, V. & Kova´cˇ, P. 150uC Amorphous
Silicon thin-Film Transistor technology for Polyimide Substrates. J.Electrochem.
Soc.148, G370-G374 (2001)
• [4] Cotema, coating machinery GmbH www.cotema.de
FLEXIBLE ELECTRONICS
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Thank you for your attention
FLEXIBLE ELECTRONICS
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