Membrane switch, also known as touch the keyboard, is using PC, PVC, PET, FPC and double-sided adhesive, and other soft materials, use screen printing technology by making the plane more sealed-mix graphics, buttons, signs show that mark, Conductive and electronic switching functions of the plastic electronic products.

     The most notable feature of the membrane switch:
       1, portable compact: the general weight of the film switches to a few grams to a few dozen grams ranging from very easy to carry and disassembly;
       2, aesthetic: the perfect modern screen printing technology, with the perfect design, you can create the need for any design;
       3, sealing: the use of specific technology, can have a waterproof membrane switch, anti-oil pollution, anti-static interference, and other functions;
       4, good conductivity: the circuit switches can be carbon paste, Silver, Bronze, such as platinum printing, conductive layer can fold; and resistance can be controlled
          You need to think of any resistance, and using unique technology, made the film can even switch to accept more than 10 million high-voltage V
          Electric shocks to their functions without injury;
       5, low-cost: Some membrane switch, only a fraction of the price of even money, as opposed to a true multi-functional electronic device of the original product
          , It is not the price advantage of other similar products and the best prices.
       6, long service life: membrane switch used materials have good insulation, heat resistance, and bending back to the high flexibility;
          Moreover, the patterns are printed using negative printing, silk screen so that the pattern will not be impaired; Therefore, the film switches can be up to life in general
          More than three years.

Membrane switch part of the common components of materials

   First, floor panel
         Panel 0.25MM than in the general level of PET, PC, and so colorless and transparent sheet on the beautiful screen images and text from the production, as a result of the main floor panel
       To play the role of the logo and key role in selection of materials so the need for a high transparency, high ink adhesion, flexibility, anti-fold, etc.
       Characteristics.
   Second, the cushion layer
         The main role of the mat layer is to layer panels and closely linked to the circuit level, so as to achieve the effect of sealing and connection, the general requirements of the thickness of the layer
       0.02 --- 0.05MM, with the viscosity and high strength of Anti-aging; in the production of general-specific selection of double-sided adhesive membrane switch, and some
       Waterproof membrane switch to anti-high-temperature requirements, the cushion layer must be in accordance with the need to use different types of materials.
   Third, control of the upper and lower circuit
       This layer using the good performance of the polyester film (PET) as the vector graphics switch circuit and on its special screen printing process of silver paste on carbon paste
     King or slurry with its conductivity, thickness in general 0.05 - 0.175MM within, the most common use is 0.125MM PET
   Fourth, layer folder
       It is in the circuit and the circuit under the layer between the connector and sealed from the role of the general use of PET plastic on both sides, which have a thickness of 0.05 - 0.2MM range; in the selection of the material layer of time should take full account of the overall product Thickness of the insulation, touch the circuit and packet key tightness.
   Fifth, on the back layer
      Hook and the use of the membrane switch and what kind of material is closely related with paste, compared with the regular use of common double-sided adhesive, 3M adhesive, waterproof plastic, and so on.

                                                           Membrane switch and the origin of the classification 
  

First, the membrane switch reason:
       1), the graphics are in the production of thin film substrates, the entire component is a switch function, and thus known as the membrane switch, known as the English MEMBRANE SWITCHES.
       2), by the different layers of material into a binding finished film, the thickness of about 1,2 ~ 2,5 MM, such as the appearance of the plate, both the panel and switch
            Dual role, the panel also called the switch, the English name PANEL SWITCHES, or switch plate.
       3), as a result of this switch action short trip, only 0.25 ~ 0.5MM about by pressure switches for the 0.5 ~ 1N, more sensitive to touch on the completion of the open hand
            Kwan, it is also known as touch switches, or touch the keyboard.

Second, the film switches:
        1), according to the circuit board and flexible substrate is divided into rigid plates
        2), according to shape into flat-panel or three-dimensional
        3), according to the feelings into operation and felt no sense of style
        4), according to the special purpose into a transparent membrane and refers to the touch-screen
        5), by way of sub-panels with the combination of discrete pieces and with the keyboard keycap