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Rabenstein, Austria, 2006/11/26 - Inform visitors about Organic LEDs (OLED/PLED), the next display technology that promises to deliver thin, power efficient and bright displays.
The leading OLED information websites Oled-display.net and oled.at (German) has a brand new design. OLED-Display.net inform you about Organic LEDs (OLED/PLED), the next display technology that promises to deliver thin, power efficient and bright displays.
The first organic displays that will hit the market will be Passive-matrix. The first LCD screens were passive, and OLED will follow suit. They are fairly simple structures. They will be more expensive, and consume a lot more power than other types of OLEDs.
They will be found in smaller devices with screens smaller than three inches, like MP3 players and cell phones. Passive-matrix is made up of a matrix of electrically-conducting rows and columns making pixels. Between the rows and the columns are the organic layers. On the other side is the substrate, the material which gives the electricity. The more current applied, the brighter the display.
Organic-Displays are the latest and most promising buzzwords in display technology.
What this means is that OLEDs can be deployed in a wide range of electronic devices and can be used extensively throughout any given device. Active components of displays can be polymers, substrates can be polymers, logical electronics can be polymers, and so on. In the years ahead OLEDs will see applications in personal computers, cell phones, televisions, general wide area lighting, signs, billboards, communications and any of a number of information appliances.
The basic OLED cell structure consists of a stack of thin organic layers sandwiched between a transparent anode and a metallic cathode. The organic layers comprise a hole-injection layer, a hole-transport layer, an emissive layer and an electron-transport layer. When an appropriate voltage (typically a few volts) is applied to the cell, the injected positive and negative charges recombine in the emissive layer to produce light (electroluminescence). The structure of the organic layers and the choice of anode and cathode are designed to maximise the recombination process in the emissive layer, thus maximising the light output from the OLED device. Both the electroluminescent efficiency and control of colour output can be significantly enhanced by "doping" the emissive layer with a small amount of highly fluorescent molecules.
To give you an idea of their potential, imagine a cardboard-thin TV screen.
Now imagine that you can roll up your TV, put it away or carry it wherever you go. Automatically, you start appreciating why millions, if not billions, of dollars are being poured into OLED research every year.
Learn more about this amazing display technology!