Resistive Touch Screen
How it works
Force touch: a resistive touch screen consists of two transparent layers, and separated by ITO dots.
When a user touches the screen by a finger, stylus or other object, they apply pressure that forces the two conductive layers to make contact at that specific point.
By measuring the voltage in both the x and y dimensions, the device can determine the precise coordinates of the touch.
Physical pressure required: a certain amount of pressure must be applied to trigger.
Advantages:
- Low cost, suitable for use in low-cost devices
- Can be operated with any object (finger, glove, stylus)
- Resistant to dirty stains and water stains on surface
Capacitive Touch Screen
How it works
Conductive touch: work by using the conductive properties of the human body to detect touch input. When a finger or other conductive object touches the screen, it disrupts the electrostatic field on the surface, and this change in capacitance is measured to determine the touch location.
No pressure required: responds to a light touch.
Advantages:
- High sensitivity, multi-touch (generally more than 10 points touch)
- High light transmission, high resolution display
- High durability (ani-scratch for glass surface)
