Technology for Resistive Touch Screens:
It is one of the touch screen technologies that is most frequently utilised. It is made out of a glass panel that has two thin, electrically conductive metallic layers deposited on it. These layers are separated by a tiny gap filled with separator dots.

The two metallic conductive layers make contact when a user touches a spot on the panel's exterior. The metal contacts on the panel serve as a voltage divider when the voltage flows through it, and the voltage change can be used to locate the point of contact.

Advantages:

Because of their exceptional durability, resistive touch screens can be used under challenging conditions.
Generally speaking, these are less expensive than other technologies.
The surface is impervious to substances like dust, dampness, and liquids like oil, grease, etc.
Less power is also consumed.

Disadvantages:

The lack of clarity on resistive touch displays is one of its key drawbacks.
The exterior coating is prone to scuffing and abrasion from pointed objects.

Technology for Capacitive Touch Screens:
The most widely used technology nowadays is capacitive-based touch screen technology. In a capacitive touch screen, a thin, transparent electrode layer for storing charge is applied to the glass panel. Capacitive touch displays heavily depend on the human body's electrical conductivity.

The electrode layer responds to the static charge of the human body when a finger contacts the screen. The four corners of the panel have sensors that monitor changes in capacitance.

The sensors assess the difference in capacitance and current flow as the user presses their finger against the screen, which is directly inversely proportional to the distance of the point of contact from the corner.

Again, there are two different types of capacitive touch displays. As follows:

Technology for Surface Capacitive Touch Screens and Projected Capacitive Touch Screens
One side of the glass panel in surface capacitive technology is coated with a conductive layer, while the other is left untreated and exposed for human contact.

Due to the static charge of the person touching the screen, a dynamic capacitor is created. Capacitance readings taken at each of the four corners are used to determine the point of contact.

In projected capacitive technology, a glass panel with an electrode film coating and an IC are used to generate a three-dimensional electrostatic field.

By detecting the ratio of electrical current, the IC establishes the point of contact.

….

Part 3 is Loading…..