Membrane keypads are input devices composed of thin and flexible layers that operate through pressure. These keypads are favored in various applications due to their simple and reliable design. Typically, they consist of three layers: the top layer, the middle layer, and the bottom layer. The top layer is the surface where the keys are pressed. The middle layer, which is coated with a conductive material, connects the top and bottom layers when a key is pressed. The bottom layer is attached to the circuit board and transmits signals. When a key is pressed, the electrical circuit is completed, allowing the system to detect which key has been pressed. Membrane keypads offer numerous advantages including resistance to water and dust, long durability, thinness, lightweight, low cost, customizability, and hygienic properties. They are used in a wide range of applications such as home electronics, industrial applications, medical devices, automotive, and toys. Due to their simple structure, durability, and cost-effectiveness, membrane keypads are a preferred solution in many industries, especially in environments where hygiene is crucial and harsh working conditions are present.
Keypads, commonly found in everyday electronic devices and industrial applications, provide a long-lasting and comfortable user experience with their ergonomic designs and durable materials.