TFT and AMOLED

[JustinBNKS]

the x20 has TFT and the clix2 has AMOLED. My question is whats the differace and the advantage and disadvantage of each.

Justin

[Step666]

AMOLED screens are (IIRC) brighter, have better colour reproduction and considerably lower power consumption than TFT-LCD screens.

If you want more info, you're best off trying Wikipedia.

[shadesbass]

TFT LCD (Thin Film Transistor Liquid Crystal Display) screens use a liquid crystal display and a matrix of transistors to switch pixels on and off.
AMOLED (Active Matrix Organic Light Emitting Diode) screens use a matrix of LEDs to produce the image.
I second Wikipedia - IIRC there is an extensive article on TFT LCD screens, although you'll have to do some reading in the LED and OLED articles to understand AMOLED screens fully.

IMHO the big advantage of AMOLED screens is that you can have true black - when a pixel is switched off the corresponding LED is completely off, hence no light leakage and more efficient operation.
I don't know if this has been implemented commercially yet, but you can also use the LEDs in AMOLED screens as photodiodes to sense light, thus making them easy to turn into multi-touch touch-screens (see Jeff Hann's cool video here).
There are some very exciting things happening with LEDs at the moment! Check out Jeff Hann's Multi-Touch Sensing through Frustrated Total Internal Reflection pages here and here (also used in the Apple iPhone I think).

[JustinBNKS]

thanks for ur responses i will give wikipedia a look