Winterlight,
Thank you. Hmm, something else to think about...... :)
Interesting to be sure. Perhaps it is wise to pass on OLED until a few
more technology cycles take place. Heck, I have not even seen an OLED
panel yet! Direct viewing comes later after much more reading.
Best,
Duncan
Winterlight wrote:
At 09:46 PM 10/12/2009, you wrote:
Wiinterlight,
What is your value for a viable "life span" for this new tech?
I only need 15-20 years, ATM.....:)
from http://en.wikipedia.org/wiki/Organic_light-emitting_diode
Disadvantages
The biggest technical problem for OLEDs is the limited lifetime of the
organic materials.[44] In particular, blue OLEDs historically have had a
lifetime of around 14,000 hours (five years at 8 hours a day) when used
for flat-panel displays, which is lower than the typical lifetime of
LCD, LED or PDP technology—each currently rated for about 60,000 hours,
depending on manufacturer and model. However, some manufacturers of OLED
displays claim to have come up with a way to solve this problem with a
new technology to increase the lifespan of OLED displays, pushing their
expected life past that of LCD displays.[45] A metal membrane helps
deliver light from polymers in the substrate throughout the glass
surface more efficiently than current OLEDs. The result is the same
picture quality with half the brightness and a doubling of the screen's
expected life.[46]
In 2007, experimental PLEDs were created which can sustain 400 cd/m² of
luminance for over 198,000 hours for green OLEDs and 62,000 hours for
blue OLEDs.[47]
Additionally, as consequence of the fact that light emitting components
of different colors have different lifetimes, it's obvious that the
quality of a color picture would degrade over time since emission of
each color reduces by a different amount. At some point color picture
quality would become unacceptable, so overall display lifetime could be
even worse than lifetime of separate components because many uses are
putting certain requirements on picture quality. This can be partially
avoided by adjusting color balance but this may require advanced control
circuits and interaction with user, which is unacceptable for some uses.
The intrusion of water into displays can damage or destroy the organic
materials. Therefore, improved sealing processes are important for
practical manufacturing and may limit the longevity of more flexible
displays.[48]
