Global Sources
EE Times-India
Stay in touch with EE Times India
 
EE Times-India > Manufacturing/Packaging
 
 
Manufacturing/Packaging  

Material elminates polariser from OLEDs

Posted: 23 May 2007     Print Version  Bookmark and Share

Keywords:contrast enhancement layer  OLED displays  reflection reduction 

OLED-T has patented a contrast-enhancing layer formed by a new material, the Super K Layer. This contrast enhancement layer has the potential to remove the expensive polarizing layer in OLED displays with significant improvements in efficiency and cost, based on initial testing. This is done by reducing the reflections from ambient lighting without affecting the direct light output from the OLED emitter or the efficiency of the electron transport layers.

OLED-T has developed a new material, the Super K Layer that can be deposited by vacuum evaporation between the electron transport and cathode structure as an additional layer during production. This contrast enhancement layer has the potential to reduce strongly the reflections from ambient lighting without significantly affecting the direct light output from the OLED emitter or the efficiency of the electron transport layers. As a result, an OLED device made with the Super K Layer can exhibit a higher efficiency than a device integrating a front polariser, said the company.

The Super K Layer has the potential to reduce reflection by up to 70 per cent with only a 10 per cent reduction in efficiency. In contrast, reflection reduction by external polariser will reduce the efficiency by 50 per cent. Moreover, the technology is expected to deliver a reduction in display thickness by around 0.3mm due to the removal of the external polariser layer.

The new material is currently under evaluation by four display manufacturers to establish if the initial test results can be replicated under mass production conditions.

"We are very encouraged by initial results for the Super K Layer technology," said Myrddin Jones, OLED-T CEO. "Removing the external polariser with its poor efficiency and high cost with a more effective internal solution could significantly improve the price/performance ratio of OLED display devices."

If results under manufacturing conditions prove to be successful, the Super K Layer technology will be introduced to the market in 2008.




Comment on "Material elminates polariser from OL..."
Comments:  
*  You can enter [0] more charecters.
*Verify code:
 
 
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

 

Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

 
Back to Top