Quote:
Originally Posted by PFC5
This is due to the limited response time with current LCD technology requiring more time to retwist the crystals to filter the correct colors that cannot keep up with fast motion and is WHY you have the motion blur. The reason it is not an issue with plasmas (or CRTs for that matter) is because they have response times about 1000 times faster, but this is separate from refresh rates which are how many times the screen refreshes.
I am sure you mean response time right?  Actually I meant response time and refresh rate which do go hand in hand.
As explained above by me, refresh rates and response times are two different things and mostly handle different issues. Increasing the refresh rate on LCDs does help in the perseption of motion blur, but until they can increase the speed in which LCD crystals can be twisted (response time) they cannot eliminate motion blur. Plasma, like CRTs do not suffer this issue.
Higher refresh rates can help with judder though if done correctly (repeating the same full frame an even multiple of 24Fps film), or done poorly with interpolation of those frames which is when you get the "Soap Opera Effect".
Plasma mfg have been touting the subdrive refrech rate as a marketing way to combat the LCD 120Hz or now 240Hz refresh rate marketing. Neither fully resolve issues, but the recent 600Hz subpixel refresh most plasma makers are using in the 2009 models will increase the moving lines of resolution to close to the full 1080 vertical lines. Panasonic claims they are now at full 1080 lines of moving resolution. To put this in context, LCD is still limited to about 600 lines of vertical moving resolution and the limiting factor is the response rate of the LCD crystals, and no matter how high they make the refresh rate with current LCD tech they cannot achieve 1080p of moving resolution.
They need to improve the RESPONSE RATE much more for those crystals to eliminate the motion blur. They certainly have improved this but who knows if they can ever improve it enough to eliminate the motion blur completely? Some people are more sensitive to motion blur than others just like about 3% of the people saw TBE (the Rainbow Effect) with DLPs.
Hope this helps explain it.  |
And to add to that, making faster refresh rates does not compensate for slow response time.
A few companies tried 3 LCD panels so each only had to display 1 color (hence much faster response time). It was so, so much better but for some reason the technology was abandoned.
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