Panasonic: Plasma black levels no longer worsen
According to Panasonic, the black levels of its plasma TVs are no longer programmed to incrementally lighten over time.
Today a representative for Panasonic told CNET that a design change in the company's 2011 plasma TVs allows them to maintain a relatively constant depth of black, or black level, over their life spans.
The change represents an improvement over, which evinced worse black levels as they aged, as tested by CNET.
"The engineers made significant changes to the internal panel materials...to improve the luminous efficiency of the panels," said Bill Schindler, technical consultant to Panasonic. "In so doing they had a byproduct effect, which allows them to not adjust the black levels over the panel aging time."
Schindler also confirmed that the changes apply to every Panasonic TV in the company's 2011 lineup.
To test this statement, CNET will continue aging and periodically measuring the 2011 Panasonic plasmas we have in-house, as well as compeditive plasmas from LG and Samsung this year.
For the sake of clarity, it's worth noting that these changes over thousands of hours of life span are different from changes we've noted during the initial "break-in" period of 100 to 200 hours, during which black levels actually improve slightly. We mentioned to Schindler that the
Black level contributes directly toand is one of the most important aspects of television picture quality.
(October, 7 2010)
(August, 19, 2010)
(April 2, 2010)
(March 2, 2010)
(February 9, 2010)
(February 4, 2010)
(January 26, 2010)