Touch layer (capacitive)
part · 1965 · Digital age
A grid of transparent electrodes that registers a finger’s touch by a change in capacitance.
Principles and materials it uses
- Capacitance — uses. A finger changes the capacitance between electrodes; the controller calculates the point of touch.
- Glass — is made of. The touch layer is applied to glass.
Where it is used
- Display — is part of. Under the glass is a touch layer that registers touches.
- Smartwatch — is part of. A touchscreen.
- Tablet computer — is part of. A touchscreen.
- Self-checkout — is part of. A touchscreen.
Things built in a similar way
- Touchpad — works like. The same capacitive sensing without a screen.