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1. Capacitive Touch-Screens

2. How it’s Made
• A capacitive touch screen is an all
glass touch screen with a
transparent metallic conductive
coating.
• The LCD display is found beneath
the glass and conductive layers.

3. How it Works
• There is a low voltage charge that
is generated from the corners of
the screen and distributed
throughout the conductive layer.
• When a finger touches the screen
it draws a minute amount of
current, creating a drop in
voltage.
• The device then pin points the
location of the touch by the
proportion of where the finger
creates the drop in voltage on the
screen.

4. Advantages and Disadvantages
Advantages
• High touch resolution
• High image clarity
• Not affected by dirt, grease,
or moisture.
Disadvantages
• Will only work when
touched by a conductive
input.
• Some capacitive touch
screens can have erratic
behavior when touched by
more than one input.

5. Interesting Facts
• A 15” capacitive touch screen
costs about $2500.
• It takes less than 3 ounces of
force to activate the touch
screen.
• It is rated for 100,000,000 plus
touches at each specific point on
the screen.
• Capacitive touch screens have
been developed into multiple
touch systems.

6. Uses
• ATMs
• Public Access Kiosks
• Phones
• Computers
• Gaming machines
• Point of Sale
• Industrial controls
• Hand held electronics

7. Uses
• ATMs
• Public Access Kiosks
• Phones
• Computers
• Gaming machines
• Point of Sale
• Industrial controls
• Hand held electronics