Touchscreen defroster
Disclosed is a touchscreen. The touchscreen can include a base material, a first coating, and a controller. The first coating can be applied to the base material. The first coating can be configured to generate an input signal. The controller can be configured to apply a base signal to the first coating, and filter the input signal from a combined signal. The combined signal can include the input signal and the base signal.
1. A touchscreen comprising:
a base material having a first base side and a second base side;
a first coating applied to the first base side of the base material, the first coating configured to generate an input signal;
a second coating applied to the second base side of the base material;
an insulator applied to the second coating;
a third coating applied to the insulator, the insulator locating in between the second coating from the third coating; and
a controller in electrical communication with the first, second, and third coatings, the controller configured to:
apply a base signal to the second coating and the third coating, and
receive a combined signal, the combined signal including the base signal and the input signal,
filter the input signal from the combined signal.
2. The touchscreen of claim 1 , wherein the first coating is indium tin oxide.
3. The touchscreen of claim 1 , further comprising a display, the base material located proximate the display.
4. The touchscreen of claim 3 , wherein the display and the base material form a channel, the touchscreen further comprising a fan arranged to move air within the channel.
5. The touchscreen of claim 1 , wherein the base material is glass.
6. The touchscreen of claim 1 , wherein applying the base signal includes the controller configured to adjust the base signal based on an ambient temperature.
7. A touchscreen comprising:
a glass base having a surface area;
a first coating applied to a first side of the glass base, the first coating configured to generate an input signal in response to a user touching the glass base;
a second coating applied to a second side of the glass base;
an insulator applied to the first coating;
a third coating applied to the insulator; and
a controller in electrical communication with the first, second, and third coatings, the controller configured to:
apply a base signal to the second and third coatings, the base signal being proportional to the surface area of the glass base,
receive a combined signal, the combined signal including the input signal and the base signal, and
filter the input signal from the combined signal.
8. The touchscreen of claim 7 , wherein the first coating is indium tin oxide.
9. The touchscreen of claim 7 , further comprising a display, the glass base located proximate the display.
10. The touchscreen of claim 9 , wherein the display and the glass base form a channel, the touchscreen further comprising a fan arranged to move air within the channel.
11. The touchscreen of claim 7 , wherein applying the base signal includes the controller configured to adjust the base signal based on an ambient temperature.
12. A service terminal comprising:
a display;
a base, the base located at an angle to and proximate the display;
a first coating applied to a first side of the base, the first coating configured to generate a capacitance change in response to a user touching the base at an input location;
a second coating applied to a second side of the base;
a third coating applied to and separated from the first coating by an insulator; and
a controller in electrical communication with the first, second, and third coatings, the controller configured to:
apply a base signal to the second coating and the third coating,
determine the capacitance change generated by the first coating in response to the user touching the base,
correlate the capacitance change and the base signal into an input signal corresponding to the input location.
13. The service terminal of claim 12 , wherein the first coating and the second coating are each indium time oxide.