OLED OLED TECHNOLOGYTECHNOLOGY

CONTENTSCONTENTS……

What is an OLED?What is an OLED? How It Works?How It Works? Types of OLEDsTypes of OLEDs OLED OLED vsvs. Plasma/LCD. Plasma/LCD Advantages of OLEDAdvantages of OLED AMOLED AMOLED

AMOLED AMOLED typestypes AMOLED AMOLED devices/applicationsdevices/applications

What is an OLED?What is an OLED?

An OLED is any light emitting diode (LED) which emissive An OLED is any light emitting diode (LED) which emissive electroluminescent layer is composed of a film of organic electroluminescent layer is composed of a film of organic compoundscompounds

OLED - Organic Light Emitting Diode

Demonstration of a flexible OLED device

How It Works?How It Works? Composed of two substrate Composed of two substrate

layers on the outsidelayers on the outside Emissive and conductive layer Emissive and conductive layer

lie between the cathode and the lie between the cathode and the anode layers anode layers

A current is applied across the A current is applied across the LED, where electrons move from LED, where electrons move from cathode to anode cathode to anode

The cathode gives electrons to The cathode gives electrons to the emissive layer, where the the emissive layer, where the anode withdraws these electrons anode withdraws these electrons from the conductive layerfrom the conductive layer

The emissive layer becomes rich The emissive layer becomes rich in negative charge while the in negative charge while the conductive layer becomes more conductive layer becomes more positively charged positively charged

The two charges recombine in The two charges recombine in the emissive layer, creating a the emissive layer, creating a drop in energy levels of the drop in energy levels of the electronselectrons

The drop in energy levels results The drop in energy levels results in radiation that is on the visible in radiation that is on the visible spectrum, emitting light spectrum, emitting light

Types of OLEDsTypes of OLEDs

Passive-matrix OLEDPassive-matrix OLED Active-matrix OLEDActive-matrix OLED Transparent OLEDTransparent OLED Top-emitting OLEDTop-emitting OLED Foldable OLEDFoldable OLED White OLEDWhite OLED

As OLEDs emit light, they can be used to make lighting panels - these will be thin, efficient, and potential transparent too. Your window can become a lamp at night

OLEDs can also be used to make white lighting panels. OLEDs provide great area lighting, and a curved or

flexible OLED will enable a wide range of beautiful lamp designs.

Types of OLED’STypes of OLED’SPassive OLEDsPassive OLEDs

• The organic layer is The organic layer is between strips of between strips of cathode and anode that cathode and anode that run perpendicularrun perpendicular

• The intersections form The intersections form the pixelsthe pixels

•   Easy to makeEasy to make• Use more powerUse more power• Best for small screens Best for small screens

Active OLEDsActive OLEDs• Full layers of cathode Full layers of cathode

and anodeand anode•   Anode over lays a thin Anode over lays a thin

film transistor (TFT)film transistor (TFT)• Requires less powerRequires less power• Higher refresh ratesHigher refresh rates• Suitable for large Suitable for large

screensscreens

OLED OLED vsvs. Plasma/LCD. Plasma/LCD

• Much faster response timeMuch faster response time• Consume significantly less Consume significantly less

energy energy • Able to display "True Black" Able to display "True Black"

picture picture • Wider viewing anglesWider viewing angles• Thinner displayThinner display• Better contrast ratioBetter contrast ratio• Safer for the environmentSafer for the environment• Has potential to be mass Has potential to be mass

produced inexpensivelyproduced inexpensively• OLED’s refresh almost OLED’s refresh almost

1,000 times faster then 1,000 times faster then LCDsLCDs

ContinuedContinued…… DISADVANTAGESDISADVANTAGES

•Cost to manufacture is high

•Overall luminance degradation

•Constraints with lifespan •Easily damaged by water

•Limited market availability

•  expensive compared to lcd/led display 

AMOLEDAMOLED  ((active-matrix organic light-emitting active-matrix organic light-emitting diodediode))

   AMOLEDAMOLED

 is a display technology for use in mobile devices and televisions

 active matrix refers to the technology behind the addressing of pixels.

AMOLED technology is used in mobile phones, media players and digital cameras

When you display an image, you actually display it line by line (sequentially) as you can only change one line at a time. An AMOLED uses a TFT which contains a storage capacitor which maintains the line pixel states, and so

enables large size (and large resolution) displays.

Magnified image of the AMOLED screen 

AMOLED AMOLED typestypes Super AMOLED is the original display which added an  is the original display which added an

integrated touch-layer to the classic AMOLED display. This integrated touch-layer to the classic AMOLED display. This results in a thinner display that behaves much better results in a thinner display that behaves much better under sunlight. Super AMOLED uses PenTile technologyunder sunlight. Super AMOLED uses PenTile technology

Super AMOLED PlusSuper AMOLED Plus is Samsung's more advanced  is Samsung's more advanced technology - which ditches the PenTile in favor of the technology - which ditches the PenTile in favor of the classic RGB Stripe matrix. So while the displays look classic RGB Stripe matrix. So while the displays look better, they provide less pixel density compared to Super better, they provide less pixel density compared to Super AMOLED displays.AMOLED displays.

Super AMOLED HDSuper AMOLED HD is the HD version of the Super  is the HD version of the Super AMOLED displays - there's no technology difference, but AMOLED displays - there's no technology difference, but Samsung uses this brand (they sometimes call it HD Super Samsung uses this brand (they sometimes call it HD Super AMOLED) to make sure we know that the resolution is HD AMOLED) to make sure we know that the resolution is HD (1280x720, or 720p).(1280x720, or 720p).

AMOLED AMOLED devicesdevices Samsung Galaxy Note (HD Super AMOLED) (HD Super AMOLED) Samsung Galaxy S (Super AMOLED) (Super AMOLED) Samsung Galaxy S Advance (Super AMOLED) (Super AMOLED) Samsung Galaxy S II (Super AMOLED Plus) (Super AMOLED Plus) Samsung Galaxy S III (HD Super AMOLED) (HD Super AMOLED) Samsung Galaxy S Plus (Super AMOLED) (Super AMOLED) Samsung Galaxy S Blaze 4G (Super AMOLED) (Super AMOLED) Samsung Galaxy Nexus (HD Super AMOLED) (HD Super AMOLED) Samsung Droid Charge (Super AMOLED Plus) (Super AMOLED Plus) Samsung Wave S8500 (Super AMOLED) (Super AMOLED) Samsung S8600 Wave III (Super AMOLED) (Super AMOLED) Samsung Focus (Super AMOLED) (Super AMOLED) Samsung Focus S (Super AMOLED Plus) (Super AMOLED Plus) Samsung Focus 2 (Super AMOLED) (Super AMOLED) Samsung Omnia 7 (Super AMOLED) (Super AMOLED) Samsung Omnia W (Super AMOLED) (Super AMOLED) Samsung Omnia M (Super AMOLED) (Super AMOLED) Samsung Infuse 4G (SGH-i997) (Super AMOLED Plus) (Super AMOLED Plus) Vertu Signature SVertu Signature S

Applications of Applications of OLED/AMOLEDOLED/AMOLED

• TVsTVs• Cell Phone screens Cell Phone screens • Computer ScreensComputer Screens• Keyboards (Optimus Maximus)Keyboards (Optimus Maximus)• LightsLights• Portable Device displaysPortable Device displays

AMOLED AMOLED typestypes Super AMOLEDSuper AMOLED Super AMOLED Advanced

Super AMOLED PlusHD Super AMOLED

SourcesSources

http://ezinearticles.com/?OLED-Lighting-and-http://ezinearticles.com/?OLED-Lighting-and-LED-Lighting:--The-Difference-between-LED-and-LED-Lighting:--The-Difference-between-LED-and-OLED&id=460933OLED&id=460933

http://en.wikipedia.org/wiki/Oledhttp://en.wikipedia.org/wiki/Oled

http://www.universaldisplay.com/index.htmlhttp://www.universaldisplay.com/index.html

http://www.oled-info.com/oledTVhttp://www.oled-info.com/oledTV

http://www.youtube.com/watch?http://www.youtube.com/watch?v=3Ufs9Wx0VXQv=3Ufs9Wx0VXQ

Thank you!!!Thank you!!!