LCD Pixel Response Time Halved

kagaku writes "Japanese newspaper the Nihon Kaizai Shimbun (evil registration required) said that Mitsubishi has mastered a technology to improve the response speed of pixels on LCDs by 100 per cent or more. It's done this by getting rid of the afterimages on screens which known as "ghosts", said the newspaper, and invented a proprietary system called Dual Domain Bend. It cites unnamed sources at Mitsubishi saying that this method produces a response speed of one millisecond when power is applied and five milliseconds when the lights go off and the power goes down. That, the paper said, compares to up to forty milliseconds to switch pixels on and off. While the technique, when it gets to the manufacturing stage, will have immediate benefits for PC monitors, it will also help narrow the gap between LCD TVs and plasma displays, which have a quicker response speed. Here's a non-registration required link."

Comments

The Samsung 710T has basically no ghosting.

[UranusReallyHertz]

After days of agonizing between it and the 20 inch Dell, I bought the Samsung 710T and I am pretty happy with it. And I have never noticed any ghosting whatsoever while playing games like Far Cry and Doom 3 and watching movies like Hell Boy. So I think the Response Time is already adequate, at least on the 17 inch sizes.

Re:Plasma Televisions are not ready for primetime.

[Anonymous Coward]

plasma tvs have a short lifetime. didnt the salesperson tell you? your experience seems a little worse than normal though.

Re:Improving outdated technologies

[Anonymous Coward]

I've never heard of DLP monitors, and I don't see how DLP could be used for anything but projectors (DLP = tiny mirrors on a chip).

Re:Plasma Televisions are not ready for primetime.

[mikael]

Plasma TV's will only last around five years. During that time the brightness will continue to decline. This makes them great for outdoor displays/public events, since there is more chance of a unit being rendered inoperable through transportation/assembly than there is through normal use. The following paper has a graph demonstrating the decline.

Re:Plasma Televisions are not ready for primetime.

[brentl]

Sucks to be you indeed. A normal, recent (made in the last few years) plasma should have a life of about 30,000 hours if I remember correctly. About three years of continuous use, at which time the brightness will be about half.
I've had a Fujitsu Plasma for about a year, on for a several hours a day. Still looks the same. Perhaps you had yours set in "Exibition mode", with the brighness upped to extreme levels, and you've worn it out too soon. If not, maybe something's wrong with it and you can get it fixed under warranty.

Re:Bragging with percentages

[RealProgrammer]

Things get really out of hand when there's a factor of two:

• We are 50% faster than the competition!

From this it's not too far to say

• We are twice the speed of the competition!

In your example, that's where the deception is:

• "50% faster" means 1.5 times faster.
• 
  "100% faster" means 2 times faster.

Re:Bragging with percentages

[khrtt]

Suppose he's talking about speed as time per event. By "50% faster" he means "time 50% shorter", which is really "twice as fast".

Here, all of a sudden, we start defining speed as "events per time unit". Then, "twice as fast" means "twice as many events per time unit", i.e. 100% faster.

Now, if you think about it, "50% shorter time per event" really does mean "100% more events per time unit", so my argument is correct and complete. I've just proven that "50% faster" is the same as "100% faster" :-)

Meanwhile

[berkut7]

Meanwhile Samsung is readying 8ms 19" LCDs for production in Q4 , 2004. 12ms LCDs produce almost no noticeble ghosting, 8ms should be even better at closing the gap to CRTs.

Re:But..

[j3110]

Most of the power used by LCD is still going to be the backlight. The LCD itself doesn't even get warm itself. You may loose a few few minutes of battery life, who knows.

Re:Improving outdated technologies

[TheGavster]

DLP is a technology replacing the LCDs in high-end projectors. It is also used to replace the CRTs in high-end rear-projection televisions. This innovation improves backlit LCDs used for notebook and desktop computers. The competing tech in that arena is OLED, which is both thinner and does not require a backlight (once it gets rolling, it will also be easier to scale to larger screen sizes because of the inkjet process used to manufacture the displays)