When you click on Layout, you see the 2D canvas where you can view and modify your layout. That is the top view of your touch sensor.
The Layout of a touch sensor consists of one or more of these Elements:
- Shielding Entities
Depending on the final application of the capacitive sensor, a different combination of the above elements is required:
- For example a touchscreen sensor includes screen elements (or "pattern") that represent the transmitting and receiving electrodes, which are connected with the controller (MCU) through the traces.
- Other types of capacitive sensors may include only buttons, sliders or wheels which are also connected to traces. Such sensors may also include vias, which are vertical cylindrical conductors allowing electrical continuity in applications of multiple conductive layers, like PCBs.
- Shielding entities, like for example grounded traces or active/driven shields, exist in almost any touch panel to prevent from unwanted noise effects. Most often shielding entities are added around the active area of a capacitive sensor.
In any case an Outline is always necessary, which defines the borders of the sensor so it must be properly placed in canvas to surround all the other Elements.