under the guidance ofunder the guidance ofMrs. Shobha p cMrs. Shobha p c

dept of ece, AIT BANGALOREdept of ece, AIT BANGALORE

Presented by Hemant Kumar Sharma (1AT08EC043)

What is an OLED?

OLED - Organic Light Emitting Diode

An OLED is an electronic device made by placing a series of organic thin films between two conductors. When electrical current is applied, a bright light is emitted.

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Architecture of OLEDs

How OLEDs Emit Light*The battery or power supply of the device containing the OLED applies a voltage across the OLED.

*An electrical current flows from the cathode to the anode through the organic layers.(an electrical current is a flow of electrons)

*At the boundary between the emissive and the conductive layers, electrons find electron holes.

*The OLED emits light

Types of OLEDs

Passive-matrix oled

Active-matrix oled

Transparent oled

Top-emitting oled

Flexible oled

Passive-Matrix

Active-Matrix

Transparent

Top-Emitting

Flexible

Applications of OLEDs

• Televisions

• Cell Phone screens

• Wrist Watch

• Computer Screens

• Digital Camera

• Portable Device displays

Advantages of OLEDs

Thinner, lighter and more flexible

Brighter

Consume much less power

Large field of view

Faster response

Less Expensive

Better contrast ratio

Disadvantages of OLEDs

OLED seems to be the perfect technology for all types of displays, but it also has some problems:

• Lifetime 

• Manufacturing 

• Water 

 

Future Uses for OLED GPS system  OLED – in future cars Curved OLED displays, placed on non-flat surfaces And many more we cannot even imagine today

Scroll Laptop• Nokia concept OLED Laptop

   

References• http://impnerd.com/the-history-and-future-of-oled• http://en.wikipedia.org/wiki/Organic_light-emitting_diode• http://www.oled-research.com/oleds/oleds-history.html• http://www.voidspace.org.uk/technology/

top_ten_phone_techs.shtml#keep-your-eye-on-flexible-displays-coming-soon

• http://www.pocket-lint.com/news/news.phtml/23150/24174/samsung-say-oled-not-ready.phtml

• http://www.cepro.com/article/study_future_bright_for_oled_lighting_market/

• http://www.technologyreview.com/energy/21116/page1/ • http://optics.org/cws/article/industry/37032 • http://jalopnik.com/5154953/samsung-transparent-oled-display-

pitched-as-automotive-hud

Thank You