Difference between TFT, LCD and CRT?

[bigcomp]

I can't just figure this one out, I know that CRT has a cathode ray tube and the frames are made on the screen by an electron gun and so the screen needs constant refreshing, in LCD this does not happens.

Now what in the world is a TFT LCD? ... Is it something similar to a CRT or is it just a regular LCD?

 

[TFT]

You called

Many companies have adopted Thin Film Transistor (TFT) technology to improve colour screens. In a TFT screen, also known as active matrix, an extra matrix of transistors is connected to the LCD panel - one transistor for each colour (RGB) of each pixel. These transistors drive the pixels, eliminating at a stroke the problems of ghosting and slow response speed that afflict non-TFT LCDs

Basically an improvement on the early LCD's

 

[bigcomp]

Hey TFT, maybe gonna buy you tomorrow

So won't the TFT monitors be heavy on the eyes if there is a separate transistor for each pixel?!?

 

[tremmor]

That was good................liked it.

 

[TFT]

Hey TFT, maybe gonna buy you tomorrow

So won't the TFT monitors be heavy on the eyes if there is a separate transistor for each pixel?!?

I don't think you can afford me

TFT monitors don't have refresh rates "as such", a CRT with it's rate set low would certainly give you a headache because it illuminates and draws line by line at say 65Hz.

A TFT has it's backlight on all the time to illuminate the image and the pixels stay at their previous colour until asked to change.

The nearest to refresh rate for a TFT monitor would be the response time I would guess. Lower the better.

EDIT: DISCLAIMER - Having a username of TFT unfortunately doesn't make me an expert in monitors.

 

[bomberboysk]

And there are multiple types of tft displays. Most common in the $100-500 range would be a TN panel. While higher end displays that display true colors, and are high quality displays(such as NEC) would use avariant of an IPS(in plane switching) display, these displays commonly cost upwards of $1500 though, but are pretty much the best for grahpic work. Although pretty much and lcd display you buy today will be some form of TFT display.

 

[bigcomp]

I don't think you can afford me

TFT monitors don't have refresh rates "as such", a CRT with it's rate set low would certainly give you a headache because it illuminates and draws line by line at say 65Hz.

A TFT has it's backlight on all the time to illuminate the image and the pixels stay at their previous colour until asked to change.

The nearest to refresh rate for a TFT monitor would be the response time I would guess. Lower the better.

EDIT: DISCLAIMER - Having a username of TFT unfortunately doesn't make me an expert in monitors.

I knew about the response time but if I am not wrong then this thing is there on almost every LCD and even the stone age passive matrix LCDs. Off-course the active matrix ones have a lower response time and thats why they can response to fast actions such as mouse pointer moving from one location to other, while in a passive matrix you may notice the mouse disappearing in between the two points.

My only concern is if the "active matrix" and "TFT" LCDs are any heavy on eyes because thats the only reason I am throwing out my lovely little CRT monitor.

And there are multiple types of tft displays. Most common in the $100-500 range would be a TN panel. While higher end displays that display true colors, and are high quality displays(such as NEC) would use avariant of an IPS(in plane switching) display, these displays commonly cost upwards of $1500 though, but are pretty much the best for grahpic work. Although pretty much and lcd display you buy today will be some form of TFT display.

I am buying an ACER Emachine E520 OR E525-902G25Mi and I can see a super-tft 15.6" TB DISPLAY written in the specifications, don't know about TN or the IPS..

By the way on a side note and a little ( possibly completely ) off-topic, if you guys were to pick between an E520 or a E525 then which one would you go for?

 

[bomberboysk]

I am buying an ACER Emachine E520 OR E525-902G25Mi and I can see a super-tft 15.6" TB DISPLAY written in the specifications, don't know about TN or the IPS..

By the way on a side note and a little ( possibly completely ) off-topic, if you guys were to pick between an E520 or a E525 then which one would you go for?

Oh, an emachine display? Definately a TN panel as they are cheap displays, probably even just a 6bit and not an 8bit display. Dont know anything about the emachines lineup, they are pretty low end pc's using crap parts.