presentation on flexible electronics
DESCRIPTION
Presentation on FLEXIBLE ELECTRONICS....TRANSCRIPT
FLEXIBLE ELECTRONICS
SEMINAR ON
Presented by:
YALAGOUDA PATIL
OUTLINE
Introduction
Materials for flexible electronics
Technologies involved processing
Degree of flexibility
Applications
Advantages and Limitations
Conclusion
INTRODUCTION
Ever evolving advances in thin-film materials and devices have fueled many of the developments in the field of flexible electronics.
MATERIALS FOR FLEXIBLE ELECTRONICS
A generic large-area electronic structure is composed of
Substratebackplane electronicsFrontplaneencapsulation
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
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
BACKPLANE ELECTRONICS
FRONT PLANE TECHNOLOGIES
Frontplanes carry the specific optoelectronic application.
Liquid Crystal Displays Electrophoretic Displays Organic Light-Emitting Displays Sensors
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.
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
BATCH AND ROLL TO ROLL FABRICATION
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
EXAMPLES…
APPLICATIONS Holistic system design
Health Care
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..,
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
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.