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OLED (Organic Light Emitting Diode)

OLED (Organic Light Emitting Diode). What is an OLED?. 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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OLED (Organic Light Emitting Diode)

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  1. OLED(Organic Light Emitting Diode)

  2. What is an OLED? • 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. • A device that is 100 to 500 nanometers thick or about 200 times smaller than a human hair.

  3. The OLED Structure

  4. 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.

  5. Types of OLEDs • Passive-matrix • Active-matrix • Transparent • Top-emitting • Flexible • White

  6. Passive OLEDs The organic layer is between strips of cathode and anode that run perpendicular The intersections form the pixels  Easy to make Use more power Best for small screens Active OLEDs Full layers of cathode and anode  Anode over lays a thin film transistor (TFT) Requires less power Higher refresh rates Suitable for large screens Types of OLEDs

  7. Transparent

  8. Top-Emitting

  9. Flexible

  10. White

  11. Advantages • Thinner, lighter and more flexible • Brighter • Consume much less power • Easier to produce and make into larger sizes • Large field of view

  12. Disadvantages • Lifetime-Short term battery life • Manufacturing • Water

  13. Current Research for OLEDs • Manufacturers focusing on finding a cheap way to produce • "Roll-to-Roll" Manufacturing • Increasing efficiency of blue luminance  •   Boosting overall lifespan

  14. Applications of OLEDs • TVs • Cell Phone screens • Computer Screens • Keyboards (Optimus Maximus) • Lights • Portable Divice displays

  15. OLEDs as a Light Source

  16. OLED Televisions Sony • Released XEL-1 in February 2009.  • First OLED TV sold in stores. • 11'' screen, 3mm thin • $2,500 MSRP • Weighs approximately 1.9 kg • Wide 178 degree viewing angle • 1,000,000:1 Contrast ratio

  17. Small OLED screen on every key • 113 OLED screens total • Each key can be programmed to preform a series of functions • Keys can be linked to applications • Display notes, numerals, special symbols, HTML codes, etc... • SD card slot for storing settings Optimus Maximus Keyboard

  18. Advantages of OLEDs OLED Displays Vs. LCD and Plasma • Much faster response time • Consume significantly less energy • Able to display "True Black" picture • Wider viewing angles • Thinner display • Better contrast ratio • Safer for the environment • Has potential to be mass produced inexpensively • OLEDs refresh almost 1,000 times faster then LCDs OLED Lighting Vs. Incandescent and Fluorescent • Cheaper way to create flexible lighting • Requires less power  • Better quality of light (ie. no "Cold Light") • New design concepts for interior lighting

  19. Disadvantages of OLEDs OLED Displays Vs. LCD and Plasma • Cost to manufacture is high • Overall luminance degradation • Constraints with lifespan  • Easily damaged by water • Limited market availability OLED Lighting Vs. Incandescent and Fluorescent  • Not as easy as changing a light bulb

  20. Future Uses for OLED Lighting • Flexible / bendable lighting • Wallpaper lighting defining new ways to light a space • Transparent lighting doubles as a window Cell Phones • Nokia 888

  21. Future Uses for OLED Transparent Car Navigation System on Windshield • Using Samsungs' transparent OLED technology • Heads up display  • GPS system  Scroll Laptop • Nokia concept OLED Laptop

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