Touchscreen vs. thermo screen
2009.04.24. 18:21
Én a cikket annó még indexen olvastam (asszem), de azt az istennek se sikerült elővadászni, de találtam mást. Elismerem nem thermo screen a neve, de tényleg így müködik. Pontosabban az ujjad által elmozdulásra késztett elektronok számából számolja a kijelző szélén hogy mennyire nyomtad meg.
Ergó NEM TOUCHSCREEN! (csak a neve az, de nem nyomásérzékeny..) és igaziból nem hőszenzorok vannak rajta tehát NEM IS THERMO SCREEN, de az elektronáramlást a HŐ IDÉZI ELŐ!
Itt forum ami a legérdekesebbe volt, de ha beirod h iphone screen és heat akkor sokat kiad (nem 3 at..)
http://forums.ilounge.com/archive/index.php/t-219192.html
és a legmegymagyarázóbb idézet(a tovább után):
01-25-2008, 01:57 PMBlackWolfFrom what I understand, the iPod touch has a heat-sensitive screen. That is why it does not respond to regular styli or finger nails. Someone please correct me if I am wrong.
Correct. It's the same for Touch and iPhone. This also means it can operate under glass and the multitouch capability is different from most touch screens as well.
no, this is not correct actually.
if the ipod would use a heat-sensitive touchscreen it would not work the moment the air temperature would be the same as your bodys temperature. (<- itt van amit te is mondtál, Balage) the ipod touch actually has an electrical field below the screens glass. electrons "flow" in there and there are sensors on the screens edge which measure how much electrons actually arrive on each screen edge. if you tap the screen you distort the electrical field, which just means a different number of electrons than usual "arrive" at the sensors - a touch is noticed.
you can test it easily: try to tap the screen with anything that's made out of plastic - it will not work since plastic does not conduct electricity.
this is also the reason you can't use the iphone or ipod touch with a PDA pen btw, because their tops are usually made out of plastic.
PS: no guarantees all of this is right. I'm not very good in understand those physic-things, but basically this is how it works somehow.
and that's the main difference between a PDA touchscreen and a ipod/iphone touchscreen: it just uses a different technology. while a PDA reacts on pressure, the ipod/iphone uses the electical field thing.
I believe the reason for your fingernail not working is that a fingernail does not conduct electricity, but I'm not 100% sure on that.
FYI: the touchscreen technology the ipod uses is the most advanced and most expensive on the market right now.
edit: just found this on apples website. seems I was right (well, I know I was right since I tested it myself, but this is the proove :D)
http://images.apple.com/iphone/features/images/technology_hero20071019.png
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