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.