Monday, June 25, 2007

Organic Light Emitting Diode

What is an OLED?

An Organic Light Emitting Diode is an organic molecule (carbon, as opposed to silicon-based) that emits light when teased with electricity. This simple concept requires one to find the right molecule to get the right colour, and you are all set for dazzling displays. Displays made with OLEDs save both on thickness and power.

Who invented OLEDs?

Kodak researcher Ching Tang, a Hong Kong-born chemist working in Rochester, New York, noticed a blue glow emanating from one of the organic solar cells he was working on.

How did he develop OLEDs?

Tang investigated the above phenomenon and published a paper on the results in 1987, concluding that organic materials were efficient converters of electricity, were great to show moving images and needed a low voltage to glow.

Why do we need OLED displays?

OLEDs are thin. They can be sprayed or printed on to very thin substrates; they neither need high-voltages to be driven nor additional power to backlight them. They also have a higher contrast and look equally bright from all angles.

Where can I find OLED displays?

Right now, as screens on small devices. Typically, an external screen of a cell phone is likely to be OLED-based, if at all.

When can I find OLED displays everywhere?

2005 is going to be the magical year for OLEDs. Expect them to proliferate from small devices such as cameras, cell phones to laptops and monitors, etc.

No comments: