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| OLED Displays |
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  more
- Active Matrix OLED (Organic LED) Graphic Displays
- Demo Boxes
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| News |
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04.05.2010 - CMEL AM-OLED Displays To Be Discontinued download PDF 
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Active Matrix OLED
Please contact GLYN for the latest information.
 sales@glyn.com.au
What is OLED?
OLED (Organic Light-Emitting Diode) is a self light-emitting technology
composed of a thin, multi-layered organic film placed between an anode and
cathode. In contrast to LCD technology, OLED does not require a backlight. OLED
possesses high application potential for virtually all types of displays and is
regarded as the ultimate technology for the next generation of flat-panel
displays.
The use of OLED technology offers the following
advantages for flat-panel displays:
1. A simplified manufacturing process
compared to TFT-LCD (See comparison of Picture 1 and Picture 2 below)
2.
Self-emitting light, in contrast to the required backlight for TFT-LCD
3.
High luminosity
4. Lightweight and thin (less than 2 mm)
5. Capable of
wide viewing angles(~180。 )
6. Low operating voltage and power consumption
7. Quick response (~ µ
second level)
8. Wide range of operating temperatures (-40°C to 85°C)
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Picture 1: OLED
Display |
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Picture 2: TFT-LCD
Display |
How Does OLED Emit Light?
| OLED’s basic structure consists of organic materials positioned
between the cathode and the anode, which is composed of electric
conductive transparent Indium Tin Oxide (ITO). The organic materials
compose a multilayered thin film, which includes the Hole Transporting
Layer (HTL), Emission Layer (EML) and the Electron Transporting Layer
(ETL). By applying the appropriate electric voltage, holes and electrons
are injected into the EML from the anode and the cathode, respectively.
The holes and electrons combine inside the EML to form excitons, after
which electroluminescence occurs. The transfer material, emission layer
material and choice of electrode are the key factors that determine the
quality of OLED components. |
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