Tom's Hardware > Forum > Computer Peripherals > Flat Panels/ LCDs > pixel response vs. refresh

pixel response vs. refresh

Forum Computer Peripherals : Flat Panels/ LCDs - pixel response vs. refresh

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Ask the community Add a reply
Word :    Username :           
 
picture_perfect   09-27-2003 at 09:44:24 AM

I would like to see Halflife 2 on a 30" widescreen lcd when it comes out (i think it will be in widesreen). What keeps me from buying one? - ghosting of course.
So i was figuring: The PIXEL RESPONSE problem in lcd's is caused by the pixels not keeping up with the refresh rate (usually 70 or above). Why not lower the refresh rate ?. This would be a problem with a c.r.t, but i read lcd's are not supposed to flicker. The only problem i see with this is that animations start to look noticeably choppy below 20hz. But at 30hz (what movies are shown in): that only requires a (1/30 =) 33ms pixel response time. So my question is, why do lcd's need such a high refresh rate?

thanyou

Add a reply
Sponsored Links
Register or log in to remove.
kinetic_tw   09-27-2003 at 06:30:21 PM
- 0 +

Although LCDs do have a refresh rate, they do not "refresh" the way that CRT's do. LCD's pixels display a constant color/image until it receives information to change that image to something different. The problem with response comes from that change. With today's technology, pixels are unable to change fast enough to prevent ghosting from a quick flick of the wrist or a fast animation. Changing the refresh rate cannot do anything to make up for an inherent flaw in the current technology.

Reply to kinetic_tw
picture_perfect   10-06-2003 at 04:41:49 AM
- 0 +

oh, your saying the time interval doesnt matter since pixels stay on. even at 30 hz you'll still get ghosting....what was i thinking? took me a while to figure that one out. thx.

Reply to picture_perfect
Ask the community Add a reply
Tom's Hardware > Forum > Computer Peripherals > Flat Panels/ LCDs > pixel response vs. refresh
Go to:

There are 1262 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.342 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them