This is how ua Phones Touch Screen Works

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snapdragon

Village Elder
#1
Capacitive touchscreen technology
consists of a layer of glass coated
with a transparent conductor (like
indium tin oxide). When a capacitive
touchscreen is touched by human
body (finger), an interruption is
created in the screens electrostatic
field (which is measurable as a
change in capacitance) which is
detected by phone’s processor or
chip and which in turn instructs
phone’s operating system to trigger
and event or action accordingly.
Capacitive touchsceens are much
better and responsive to human
touch when compared to resistive
touchsceens and hence the user
experience for touch is much better
with capacitive touchscreens.
Capacitive Touchsceens are used in
most of the higher end smartphones
 
L

Luther12

Guest
#8
What about the resistive touchscreens zile zilisumbua watu sana?
http://en.wikipedia.org/wiki/Touchscreen#Resistive

A resistive touchscreen panel comprises several layers, the most important of which are two thin, transparent electrically-resistive layers separated by a thin space. These layers face each other with a thin gap between. The top screen (the screen that is touched) has a coating on the underside surface of the screen. Just beneath it is a similar resistive layer on top of its substrate. One layer has conductive connections along its sides, the other along top and bottom. A voltage is applied to one layer, and sensed by the other. When an object, such as a fingertip or stylus tip, presses down onto the outer surface, the two layers touch to become connected at that point: The panel then behaves as a pair of voltage dividers, one axis at a time. By rapidly switching between each layer, the position of a pressure on the screen can be read.
 

This is Gold

Senior Villager
#12
Cannot wait to see wht awaits for us in da future..say 5 yrs frm now. Touch screen itakuwa kama simu ya Bamba 50 ..only wasee wa ocha like uwesmake will own them. Me thinks phones will be unavaa watch alafu ukiwasha aka reflection appears kwa hewa..sasa hio ndo itakuwa simu yako..no more hard phones itakuwa in soft copy mode..memba this reply 5 yrs frm now
 

snapdragon

Village Elder
#13
it was rumoured hTC were working on such kind of a fon.with 4 tiny projector at the edges tht shoots the images vertically and a display is formed at the interjecting point ..they called it hologram display...Sijui kama wali succed
 

Jazzman

Village Elder
#14
I read somewhere that holography is difficult coz it requires high powered lasers. Theres others called lenticular something and another autostereoscopic
 
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