1. Composition: The rubber button is made of an elastomeric material, such as silicone rubber or a rubber compound, which is flexible and durable.
2. Carbon-Filled Rubber or Conductive Silicone: Within the rubber button, there is a layer of carbon-filled rubber or conductive silicone. Carbon particles act as conductive fillers that allow electricity to pass through when compressed.
3. Circuit Design: The remote control's circuit board has corresponding conductive pads or traces beneath the rubber buttons. These pads are designed to align with the position of the rubber buttons.
4. Compression and Contact: When you press a rubber button, it physically compresses and makes contact with the underlying conductive pad or trace on the circuit board. The carbon-filled rubber or conductive silicone in the button establishes an electrical connection between the button and the circuit board.
5. Signal Transmission: Once the electrical connection is made, the circuit registers the button press and transmits the corresponding signal to the remote control's internal circuitry. This signal can be processed further to perform the desired function, such as changing channels, adjusting volume, or sending a command to a connected device.
It's important to note that the exact mechanism may vary depending on the specific remote control design and manufacturing methods used by different manufacturers. However, the use of carbon-filled rubber or conductive silicone is a common approach for creating electrical connections in remote control buttons.