Epson P-2000
LTPS TFT Screen
LTPS (low temperature poly-silicon) is the base material used for LCDs in products such as the Epson Photo Fine range, mobile phones, PDAs and digital still and video cameras. Where displays in some products utilise an "a-Si" (amorphous-silicon) base, they generally exhibit slower speed and have higher energy requirements. With LTPS technology, though, the electron mobility can be up to 100 times faster, have a higher pixel density and be more compact.
The LTPS advantage - higher pixel density for a better image
Displays using LTPS allow for a higher pixel density than a-Si displays primarily due to the fact that LTPS technology can minimise the size of the TFT picture element. The end result is a clearer, sharper image free of noticeable pixilation, which could otherwise manifest itself as jagged edges in contrasting areas of an image.
The LTPS advantage - compact and reliable
Another advantage of LTPS is that it is possible to integrate the electrical circuit with the glass base, eliminating the need for an external circuit board. This greatly increases reliability as there are fewer failure points within the display. It also makes for a more compact design since the integrated circuit is actually in the glass base rather than a separate component of the display.