Wednesday, April 8, 2009

Actual disadvantages of OLED

There a few disadvantages related to OLED which may discourage organizations to implement such technology. First of all, the main technical challenge of OLEDs is the limited lifetime of the organic materials. Scientists are currently searching for more durable molecules so that OLEDs could last longer. If they do, OLEDs displays lifetime will increase significantly. A second main problem with OLEDs is that the devices are presently sensitive to environmental factors such as moisture and oxygen. Scientists need to improve the sealing process of OLEDs. At last, organizations need to pay a high price to obtain such an exclusive technology. As this technology is not yet very popular, the prices are high. Organizations can be reluctant to buy expensive OLEDs when the technology itself needs to be improve.

The following video introduces OLED Technology and also provides explanation for the limited lifetime disadvantage:


Links:

http://video.google.com/videoplay?docid=-5392488100974063103

http://oledguide.wordpress.com/category/oled/

http://www.informationdisplay.org/newsarticle.cfm?newsArt=news150

Actual Advantages for Organizations to use OLED

Implementing the OLED technology offers several advantages for organizations. For example, OLED displays have many advantages over today's liquid crystal displays such as:

  • Lower power consumption
  • Displays with vibrant colors and increased brightness
  • Lightness of displays
  • Faster response time: less than 0.01 ms
  • Less expensive to manufacture
  • Greater viewing angles

Implementing OLEDs in organizations involves saving money on electricity. Indeed, OLED displays are energy efficient compared to conventional LCDs displays. Actually, when an OLED device is turned off, it produces no light so consumes no power. An other potential advantage to use OLEDs in organizations is that they are very compact and light. They do not require many space. At last, OLEDs can theoretically have a significant lower manufacturing cost compared to conventional displays, because they can be printed onto any substrate using inkjet printer.

In addition, many industries are using the OLED Technology. It is the most present in the communication and electronic industries.

Links:

http://206.106.174.125/tech.htm

http://oledguide.wordpress.com/category/oled/

http://electronics.howstuffworks.com/oled5.htm

An Emerging Technology who has the Potention to Replace Existant Tools

Organic Light-Emitting Diode is an emerging technology which has great potential into replacing actual electronic and lighting devices. Indeed, this technology can replace existing displays such as LCDs with organic light-emitting displays (OLEDs). The electronic industry uses the OLED technology to produce other types of displays such as transparent and top-emitting OLEDs (TOLEDs), Flexible OLEDs (FOLEDs), and others. This technology is not only limited to computer displays, but can also be applied to television screens and cell phones. This emerging technology can also compete with the lighting industry by introducing the white OLEDs. At last, not only it can replace existing communication and electronic devices, this technology may also prompt the development of news products such as office windows or electronic roll up newspaper!

Definition: Organic Light-Emitting Diode

The organic light emitting diode (OLED) technology is used to create solid-based light emitting monolithic devices. OLEDs are organic semiconductors with the appearance of a thin film. It basic stucture is composed of a series of organic layers placed between two conductors. When an electrical charge is applied to the organic light emitting diode; it illuminates instantanously! The factors that determines the device's performance depends on the organic materials used and its layer structure.



















An (OLED) consists of the following parts:

Substact: It supports the OLED and is usually consistuted of glass, plastic, foil or thin film.

Anode: It is a transparent component removing electrons when electricity is passing trew.

Conductive and Emissive Layers: Composed of organic molecules or polymers.

Cathode: Its role is to inject electrons when electricity is charged.


Making of (OLEDs)

The biggest manufacturing challenge is to apply the organic layers to the substacte. There are 3 ways of doing this:
  • Vacuum deposition or vacuum thermal evaporation: Expensive and inefficient

  • Organic vapor phase deposition: Efficient and reduces costs

  • Inkjet printing: This technology greatly reduces manufacturing costs.







Links:
http://206.106.174.125/tech.htm

http://electronics.howstuffworks.com/oled1.htm

http://www.wisegeek.com/what-is-an-oled.htm