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April 23, 2004

Pixels on LCD Monitor

Pixels on LCD Monitor(note: enlarged image is 1600x1500 and 1.2 MB)

It's pretty interesting to see what LCD pixels look like when zoomed in and macro’d with digital camera.

Each pixel is consisted of three colors (RGB). I think this may be the reason why CMYK looked so crappy on LCD monitors (even with modified ColorSync setting). I usually do all of my CMYK works on secondary monitor (CRT).

I think LCD is better than CRT even though it’s not good at CMYK. It doesn't make my eyes strain, color overall look more vibrant, save electronic, etc. The only things that annoyed me the most is ghosting problem and screen burn-in. If you leave a white window untouched for a several minutes, it will "print" on the screen and take a while for it to return to correct color. This happens even with top-of-the-line LCDs.

If you plan to buy a LCD soon, make sure it is from quality brand name such as Apple, Sony, Viewsonic, etc with long warranty. Cheap LCD usually has the worst refresh rate (you’ll need to call GhostBusters for this) and high numbers of dead pixels.

For more info about LCD, go here [Howstuffworks.com]



Well, CRT screens also use RGB for their images. But unlike CRTs they have a bigger colour space, because the electron cannons are much more flexible in the brightness of each pixel's subpixels.

See also: http://www.dansdata.com/images/flatscreens/crt200.jpg

And then, LCD monitors don't really need high refresh rates, because their pixels are bright even after the refresh just came. Which is terrible for games (that's the reason why never TFTs (those replaced the LCDs) have higher refresh reates), but not really a bad thing otherwise...

Didn't mean to correct you, I hope my info is also of some use :)

Posted by: Guido at April 24, 2004 03:25 PM

thats kinda cool to look at, especially on my 'book, because my pixels are displaying pixels that are zoomed up. ooh, i have a good idea: take a picture of the pixels that display the picture you took adam. :O

Posted by: fireside at April 24, 2004 06:13 PM

Guido, hey, feel free to correct me anytime :) That's why I put in " I think" because I'm not sure if that is the real reason.

I appreciated the informative post. One thing I'm wondering about is how can we reduce the ghosting problem? Will better voltage management in LCDs help solve that?

fireside, I'll go blind! So much pixels that I'll start dreaming of pixels jumping over the fence instead of sheep.

Posted by: Adam Betts at April 27, 2004 12:21 AM

A very late answer to your question about the ghosting problem - I honestly don't know what it is exactly that causes TFTs to ghost so much. With LCDs it was not possible to access the pixels fast enough, so they had to have some afterglow. But I guess the crystals just don't switch states fast enough after they had their status changed by an electric impulse to go back to their original (is it black or white?) state, and thus some of their former colour remains.

Newer displays don't have this problem anymore though, they have much shorter reaction times. My own TFT doesn't ghost noticeably anymore...

Oh, by the way, you might consider to add a word blacklist or something, helped for my comments...

Posted by: Guido at October 3, 2004 03:24 PM
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