Changes

Jump to: navigation, search

OLED - Organic Light Emitting Diode

852 bytes added, 09:55, 16 February 2011
/* OLED Components */
OLED displays use organic compounds that emit light when exposed to an electric current. They are brighter, have better contrast, offer wider viewing angles, use less power, and provide faster response times than liquid crystal displays. OLED screens' thickness is a third of that of LCDs, since they don't need a back-light, and that makes them a good fit for portable electronics devices.
==OLED Components==
[[Image:oled structure.png|thumb|center| 400 300 px|]]An OLED consists of the following parts:*Substrate (clear plastic, glass, foil) - The substrate supports the OLED.* Anode (transparent) - The anode removes electrons (adds electron "holes") when a current flows through the device.* Organic layers - These layers are made of organic molecules or polymers.**Conducting layer - This layer is made of organic plastic molecules that transport "holes" from the anode. One conducting polymer used in OLEDs is polyaniline.**Emissive layer - This layer is made of organic plastic molecules (different ones from the conducting layer) that transport electrons from the cathode; this is where light is made. One polymer used in the emissive layer is polyfluorene.* Cathode (may or may not be transparent depending on the type of OLED) - The cathode injects electrons when a current flows through the device.
==OLED Types==
92
edits