TECHNOLOGY BEHIND TOUCHSCREENS

Hello, Friends Today I am with a topic which fascinates every one The touch screen applications sound fascinating right? yeah although we are living in the generation of the screen age

 Let's get into this topic without any delay

                           If we go back to the past we find the real genius who invented this fascinated and frisky technology it's Jhonson who invented the first touch screen
                                   Although it could analyze only a single touch response which led to the invention of the fully functional touch screen in the late 1980s


MAGIC BEHIND THE TOUCH SCREENS: it's WORKING

                 There are more than 6 types of touch screens but today we are going to focus on the two most popular touch screen technologies
                               1.Resistive touch screens
                               2.Capacitive touch screens

How does the resistive touchscreen respond?
       Just press on the screen hard enough so that the screen bends and resists our touch resulting in the output we desire

   Getting into technical terms resistive screens are made by two layers in which one layer is resistive and the other is conductive and both layers are separated by a medium called spaces

                Here as we apply pressure on the screen the resistive layer analyses the touch input and as the screen is bent the two layers are squeezed and the difference in the current is analyzed by the software resulting in the output



                                                                          Resistive touch screens find use in ATMs, industries and in many medical equipments


Here comes the most awaited part of this technology Capacitive touch screen which finds use nearly in all consumer-related products like the most loved smartphones tablets and many more
Here comes its working
                                         Capacitive touch screen changes electric current when it comes
into contact with anything that conducts electric charge
These capacitive touch screens are made by indium tin oxide or copper oxide both of these materials keep electrical charges in super tiny wires, with each of them being thinner than our hair

We have two types of capacitive touch screens
                                                                   1.Projective
                                                                   2.Surface
Projective:

• 

and surface capacitive touch screen:




                      Whichever type of capacitive screen you use, as soon as your finger hits the display, it transfers tiny electric chargeback to your finger Hence we have a complete circuit which leads to a potential drop in a particular place on a screen and here the software comes into play as it analyses the location of potential drop and follows our command



Let's continue with more fascinating technologies on my next blog

Heres my question to all the readers
          Why we can't use a smartphone when the screen is wet comment down your answers and feel free to raise quires related to this topic