G20以前松下等离子屏黑位劣化

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CNET.COM：通过实验确认了松下等离子黑位会劣化，以及关于这一事件的详细分析。
Plasma panels use an initialization voltage adjusting algorithm to compensate for panel wear over the lifetime of the panel. This allows a panel to display the darkest possible blacks while preventing pixel misfiring. Tuning this algorithm requires extensive long-term testing and tuning. It also requires producing panels that all behave very similarly. Real engineers like the ones at Pioneer devoted lots of time and effort to tuning the algorithm on the R, G, and B channels. If done properly (like Pioneer or Samsung) black levels do not rise, in fact they may even improve with the life of the panel. Panasonic, however, was either lazy or just incompetent. They over-compensated in their voltage program. They drive the panel at a higher voltage than necessary, and the black level increases as the panel ages. The difference begins to occur as soon as 250 hours of use. The black level issue is not normal panel wear, it is not a natural settling of plasma cells. This is an artificial problem directly created by improper programming by Panasonic engineers.

引言：等离子电视采用一种初始电压，在屏的整个使用寿命过程中调节屏幕的补偿算法。这让屏幕能显示出尽可能黑的黑色，同时防止象素损坏。调整这一算法需要大量长时间的测试和调节。这也要求制造屏时，所有屏的表现要完全非常一致才行。真正的工程师，例如PIONEER（先锋）的技术人员，会花大量的时间和精力去调整这一关于RGB的算法。如果算法最后调整正确（就如先锋或三星的表现般）黑位并不会升高，实际上黑位甚至会随着屏的使用时间而表现更加优秀。但是，松下，不知道是因为懒惰还是根本没有这个能力。它在他们的电压程序里进行了过度补偿。使得屏以不必要的高电压运行，从而导致黑位随着屏的使用时间而增高。这种可见的变化从使用250小时后开始出现。黑位问题并不是显示屏的正常现象。它不是等离子显示器的正常设计。这完全是由松下工程师设计的错误程序人为导致的问题。

http://news.cnet.com/8301-17938_ ... centerColumnArea1.2

aoc168

黑位劣化与调RGB没关系，与发光材料有关系

坛论家电

我的PZ800和G11都没这个问题，一台3年，一台2年[s:97]