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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)
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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
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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
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Types of OLEDs
Passive-matrix oled
Active-matrix oled
Transparent oled
Top-emitting oled
Flexible oled
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Passive-Matrix
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Active-Matrix
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Transparent
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Top-Emitting
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Flexible
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Applications of OLEDs
• Televisions
• Cell Phone screens
• Wrist Watch
• Computer Screens
• Digital Camera
• Portable Device displays
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Advantages of OLEDs
Thinner, lighter and more flexible
Brighter
Consume much less power
Large field of view
Faster response
Less Expensive
Better contrast ratio
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Disadvantages of OLEDs
OLED seems to be the perfect technology for all types of displays, but it also has some problems:
• Lifetime
• Manufacturing
• Water
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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
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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
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Thank You