Presentation on FLEXIBLE ELECTRONICS....

1. FLEXIBLE ELECTRONICS
SEMINAR ON
Presented by:
YALAGOUDA PATIL

2. OUTLINE
 Introduction
 Materials for flexible electronics
 Technologies involved processing
 Degree of flexibility
 Applications
 Advantages and Limitations
 Conclusion

3. INTRODUCTION
Ever evolving advances in thin-film
materials and devices have fueled
many of the developments in the
field of flexible electronics.

4. MATERIALS FOR FLEXIBLE
ELECTRONICS
A generic large-area electronic structure
is composed of
 Substrate
 backplane electronics
 Frontplane
 encapsulation

5. SUBSTRATES
Flexible substrates that are to serve as drop-in
replacements for plate glass substrates must meet
many requirements:
 Optical properties
 Surface roughness
 Thermal and thermomechanical properties
 Chemical properties
 Mechanical properties
 Electrical and magnetic properties

6. BACKPLANE ELECTRONICS
Backplanes provide or collect power and signal to
or from frontplanes. Backplanes may be passive or
active.
 Silicon Thin-Film Transistors
 Organic Thin-Film Transistors
 Materials for Interconnects and Contacts

7. BACKPLANE ELECTRONICS

8. FRONT PLANE TECHNOLOGIES
Frontplanes carry the specific optoelectronic
application.
 Liquid Crystal Displays
 Electrophoretic Displays
 Organic Light-Emitting Displays
 Sensors

9. TECHNOLOGIES AND
INTEGRATION PROCESSES
Any manufacturable device has four essential
characteristics:
 Superior and pre-specified performance, with
reproducibility, uniformity, and reliability;
 High yield to acceptable tolerance;
 Simulations exist for both reverse engineering
during development and right-first-time design;
 Proven adequate in-service lifetime.

11. FABRICATION TECHNOLOGY FOR
FLEXIBLE ELECTRONICS
 Fabrication on sheets by Batch Processing..
 On a rigid carrier, facing up and loose;
 In a tensioning frame, facing up or down;
 In a frame, facing down and loose
 Fabrication On Web by roll-to-roll Processing
 Additive Printing

12. BATCH AND ROLL TO ROLL FABRICATION

13. DEGREE OF FLEXIBILITY
Flexibility can mean many different properties
to manufacturers and users.
 Degree of flexibility is given by ε = d/2r.
 bendable or rollable
 permanently shaped
 elastically stretchable

14. EXAMPLES…

15. APPLICATIONS
 Holistic system design

16.  Health Care

17. OTHER APPLICATIONS
 Automotive Industries
 Displays and Human- machine interaction
 Energy management and mobile devices
 Wireless systems
 Electronics Embedded in the living environment
 Electronics for hostile environment etc..,

18. ADVANTAGES AND LIMITATIONS
Advantages:
 Size and weight
 Increased circuitry density
 Boundries of design and packaging
 Shape or to flex during its use
Limitations:
 Lifetime
 Manufacturing
 Water
 Battery

19. CONCLUSION
Based on the current socioeconomic trends, we
outlined some of the more likely technological
future needs and discussed the potential exploits of
thin-film flexible electronics in various market
sectors.