|
Within a greasy or dirty environment resistive touch
screens have significant advantages over capacitive touch
as they functionally respond to pressure.
Resistive touch screens can be operated with a bare or gloved
hand, a stylus or almost any other pointing implement. However in
practice the flexible touch membrane can often be scratched, torn or
even melted and this can make the product unsuitable for
applications such as public access terminals principally due to the
high risk of vandalism.
Within these environments toughened glass capacitive touch
screens are often supplied achieving reasonable vandal resistance
but as this technology requires skin contact to effect the touch, a
dirty or scratched screen, a gloved hand or stylus implement will
fail to effect a touch. This itself often increases the risk of
damage due to increased force being applied by the user.
Moreover it is claimed that this technology is susceptible to
electromagnetic interference, producing false presses – a real
hazard in military or other potentially life critical
situations.
Clearly with both technologies having their own advantages and
disadvantages a third option which exploits the benefits, whilst
removing the disadvantages of both, is going to be really attractive
to OEM’s within a multitude of markets.
GFG (glass, film, glass) achieves the touch
characteristics of resistive touch and the robustness of capacitive
touch and yet also is scratch resistant.
Surprisingly whilst capacitive touch is typically 100% - 150%
more expensive than resistive, GFG sits at less than 35%.
Products supporting GFG touchscreen include our Panel
PC systems, complete
display monitors and open
frame display monitors. | 
