fortypoundhead.com

What is OLED?

Posted On 2011-04-16 by FortyPoundHead
Keywords:
Tags: Tutorial General 
Views: 573


Short for organic light-emitting diode, a display device that sandwiches carbon-based films between two charged electrodes, one a metallic cathode and one a transparent anode, usually being glass.

The organic films consist of a hole-injection layer, a hole-transport layer, an emissive layer and an electron-transport layer. When voltage is applied to the OLED cell, the injected positive and negative charges recombine in the emissive layer and create electro luminescent light. Unlike LCDs, which require backlighting, OLED displays are emissive devices - they emit light rather than modulate transmitted or reflected light.

OLED technology was invented by Eastman Kodak in the early 1980s. It is beginning to replace LCD technology in handheld devices such as PDAs and cellular phones because the technology is brighter, thinner, faster and lighter than LCDs, use less power, offer higher contrast and are cheaper to manufacture. An important step in the evolutionary process began with the use of thin-film organic layers. The first EL thin-film device used a single organic layer sandwiched between two injecting electrodes.

OLEDs are the latest and most promising buzzwords in display technology. 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.


About the Author

FortyPoundHead has posted a total of 1974 articles.

 


Comments On This Post

No comments on this post yet!


Do you have a thought relating to this post? You can post your comment here. If you have an unrelated question, you can use the Q&A section to ask it.

Or you can drop a note to the administrators if you're not sure where you should post.


Your IP address is:54.81.45.122

Before you can post, you need to prove you are human. If you log in, this test goes away.




Recent Forum Posts

Advanced search added
dwirch posted on September 23, 2017 at about 13:44 in Site News

Job Spammer: Gaurav Mehta - AgreeYa Solutions
dwirch posted on September 22, 2017 at about 10:35 in Spammers

Job Spammer: Prutha Siri - Javelin Systems
dwirch posted on September 10, 2017 at about 6:15 in Spammers

New security implemented
dwirch posted on September 7, 2017 at about 7:16 in Site News

Malicious IP Checker Companion Tool
dwirch posted on August 12, 2017 at about 20:24 in Site News

Job Spammer: Steve Adams
dwirch posted on August 8, 2017 at about 7:44 in Spammers