Flexible membrane keyboard is a typical form of membrane keyboard. The reason why this kind of membrane keyboard is called flexible is that the mask layer, isolation layer, and circuit layer of the membrane keyboard are all composed of software films with different properties.
The circuit layer of the flexible membrane keyboard uses polyester film (PET) with good electrical properties as the carrier of the switch circuit pattern. Due to the influence of the properties of the polyester film, the film keyboard has good insulation, heat resistance, flexural resistance and high resilience. The graphics of the switch circuit, including the switch connection and its lead wires, are printed with low-resistance, conductive paint that cures under low-temperature conditions. Therefore, the composition of the entire membrane keyboard has a certain degree of flexibility, which is not only suitable for use on a flat body, but can also be matched with a curved body. The lead wire of the flexible membrane keyboard is integrated with the switch body itself. When making the connection of the group switch, it is collected in a certain place of the membrane and extended outward according to the designated position and standard line distance of the design as a soft , The arbitrarily bendable and sealed lead wire is connected to the rear circuit of the complete machine.
