Organic Light Emitting Diodes and Displays Miss Aastha.M. Gupta Miss Aastha.M. Gupta Instructed by: Komal Goenka

Contents Introduction Introduction Birth of OLEDs Birth of OLEDs Current OLEDs Current OLEDs Different types of OLEDsDifferent types of OLEDs AdvancementsAdvancements Future of OLEDs Future of OLEDs Conclusion Conclusion

Introduction Technology based on electroluminescence Technology based on electroluminescence Light is emitted when current flows through organic materialLight is emitted when current flows through organic material Luminescent materials have great potential Luminescent materials have great potential Fireflies utilize process with nearly 100% efficiencyFireflies utilize process with nearly 100% efficiency

Birth of OLEDs First successfully created by Ching Tang and Steve Van Slyke in 1987 at Kodak Labs. First successfully created by Ching Tang and Steve Van Slyke in 1987 at Kodak Labs. First tests – very efficient, simple to make First tests – very efficient, simple to make Showed potential for displays Showed potential for displays

Structure of an OLED

Current OLEDs OLEDs Becoming Popular OLEDs Becoming Popular Slim – UDC developed an 18mm thick displaySlim – UDC developed an 18mm thick display Use less power – 6W when all pixels onUse less power – 6W when all pixels on Easy to manufacture – No back light or heavy drivers.Easy to manufacture – No back light or heavy drivers. Inexpensive – Small screens comparable to LCDs and components are cheap.Inexpensive – Small screens comparable to LCDs and components are cheap. True Color – Using a stacked approachTrue Color – Using a stacked approach Durable – No liquid crystals, some use plastic substrate.Durable – No liquid crystals, some use plastic substrate.

Different Types of OLEDs Conventional (OLED) Conventional (OLED) Inverted (OILED) Inverted (OILED) Transparent (TOLED) Transparent (TOLED) Metal-Free (MF-TOLED) Metal-Free (MF-TOLED) Stacked (SOLED) Stacked (SOLED) Foldable (FOLED) Foldable (FOLED)

OLEDs

IBM’s OLED PDA Watch

Advantage of SOLEDs

SOLED vs. LCD

Future of OLEDs New organic materials will lead to even higher efficiency New organic materials will lead to even higher efficiency New production processes will reduce overall cost of devices and allow for larger devices to be made New production processes will reduce overall cost of devices and allow for larger devices to be made Stability will increase Stability will increase Future is “bright” for OLEDs Future is “bright” for OLEDs

Conclusion Electroluminescence Electroluminescence Birth of OLED Birth of OLED OLEDs Today OLEDs Today Future of OLEDs Future of OLEDs Future is “Bright”Future is “Bright” Questions ?