Membrane Keyboard,membrane keypad,Membrane Switch

What are the advantages of the FPC thin film key switch? FPC FILM SWITCH FPC film switch FPC film switch FPC film switch FPC film switch the difference between ordinary film switches is that the circuit is no longer a stick print circuit, but a more stable FPC circuit information, it’s more resistant to heat and corrosion. Flexible circuit boards for flexible film Switch Circuit Layers. The circuit has the advantages of high precision, 1.0 mm output interval, low resistance value, stable and reliable performance and long service life. This thin film switch is called a flexible film because the film switch mask layer, the isolation layer and the circuit layer are composed of various properties of the soft film. The circuit layer of the flexible membrane switch is made of pet with good electrical properties, which is used as the carrier of the switch circuit pattern. This layer is also divided into inductive shrapnel and upper and lower loops. Due to the characteristics of polyester film, the FPC film switch makes the film switch have good insulation, heat resistance, folding resistance and high resilience.

LuphiTouch is a high-tech enterprise for human machine interface assemblies.

A circuit of a switching circuit, including a switching connection and its leads, printed with a low resistance conductive coating and cured at low temperatures.The key part of the protruding part is to press the key body area on the mask layer with a roller press. According to the natural characteristic and concave-convex characteristic of the thin film switch material, there are strict requirements for temperature and pressure.

The basic form is as follows:

  • Line Slot: Switch side slot when in use.
  • Planar Bulge: used when the whole switch is above the surface of the panel. Bulbous: used for handling spherical keys.
  • protrusion + protrusion: not often used. The advantages of the raised button of the membrane switch are:
  • the decorative effect of the appearance of the membrane switch is improved.
  • the operator’s sense of touch is more sensitive.
  •  the exact range of a given bond body.
  • speed up identification.

Design to consider the following factors:

  • the need for special mold processing.
  • the ultimate temperature of the polyester is 50 ° C
  • and the expansion height can not exceed 1.5 times of the material thickness.
  • the plane projection shall be at least 3 mm or 5 mm from the edge.
  • the raised key on the frame line is at least 5 mm from the edge.
  • too much force will reduce the mechanical life (polycarbonate mask mechanical life should be able to run no less than 100,000 times) .

Posted by LuPhiTech......May.28,2024