Video Asylum

Posted by Tom §. (B) on September 26, 2002 at 07:14:58

In Reply to: in agreement here. posted by njjohn on September 26, 2002 at 03:25:18:

don't plazma tv's deteriorate over time. that was a real turn off for me, to know that the picture quality, the brightness would continue to go down over time.

And you actually think that doesn't happen with direct view and rear projection CRT's? You don't think that doesn't happen with DLP and LCD front and rear projection lamps? What is happening in all those cases? (hint: phosphors are burning.....)

i prefer things to break in and get better over time.

Direct view and rear projection CRT's slowly drift in geometry, convergence, color temperature, and do lose light output. *Think* for a moment. Even an ISF tech will tell you that convergence and geometry will need to be retuned within a few years of calibration.

Most every plasma display has a rated brightness half life of at least 20,000 hours with some manufacturers stating a half life of 50,000 hours. For 20000 hours, if you watch 4 hours a day every day, that's a little over 13 years and even then you *still* have useful light output at the end of that lifetime. Yes, they do "wear out" but so does every other display technology. At least with plasma and LCD, you don't drift in convergence and geometry due to the displays being fixed pixel.

Tom §.