flexible electronics
TRANSCRIPT
Presented By:
Roshan Mani
11ECTEC047
B.Tech. VIII Sem
E.C.E. Deptt.
GCET Bikaner
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OUTLINE
Introduction
Basic OLED Structure
Materials for flexible electronics
Technologies involved in processing
Technologies for Flexible Displays
Degree of flexibility
Applications
Advantages and Limitations
Conclusion
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INTRODUCTION
Ever evolving advances in thin-filmmaterials and devices have fueled many ofthe developments in the field of flexibleelectronics.
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Basic OLED structure
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Materials for Flexible Electronics
A generic large-area electronic structure is composed of :
Substrate
Back-plane
Front-plane
Encapsulation
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SubstratesFlexible substrates that are to serve as drop-in replacements for plate glass substrates must meet many requirements:
Optical properties
Surface roughness
Thermal and thermo-mechanical properties
Chemical properties
Mechanical properties
Electrical and magnetic properties
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Backplane electronicsBackplanes provide or collect power and signal to or from front-planes. Backplanes may be passive or active.
Silicon Thin-Film Transistors
Organic Thin-Film Transistors
Materials for Interconnects and Contacts
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Backplane Electronics
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Front plane technologiesFront plane carry the specific optoelectronic application.
Liquid Crystal Displays
Electro-phoretic Displays
Organic Light-Emitting Displays
Sensors
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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.
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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
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Batch and roll to roll fabrication
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Degree of flexibilityFlexibility 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
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Examples…
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APPLICATIONS
Holistic system design
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Health Care
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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..,
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ADVANTAGES AND LIMITATIONSAdvantages: Size and weight Self luminous Low cost & easy fabrication Increased circuitry density Bounadaries of design and packaging Shape or to flex during its use Wide Viewing Angle
Limitations:
Lifetime Manufacturing Water Battery
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CONCLUSION
Based on the current socio-economic trends, weoutlined some of the most likely technological futureneeds and discussed the potential exploits of thin-filmflexible electronics in various market sectors.
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