Membrane switch is related to silkscreen printing. It is one of the few independent products that serves the high-tech field with silkscreen printing as the main process.

In addition to the decorative and marking functions of traditional panels, the membrane switch has the manipulation functions of the switch element. It also connects the switch element with the host circuit and the lead wire (that is, the circuit). It has the function of reading display transparent window and indicator light transparent window, so the membrane switch is neither a single new panel nor a single switch element. It's an electronic product integrating function and decoration, which is a novel electronic device.

Strict quality management

In the quality inspection of the membrane switch, in addition to the color rendering of the ink and the color reproducibility required by the customer, it is more important to pay attention to the inherent quality of the membrane switch, such as key force, service life, peel strength, high temperature, low temperature, constant humidity and heat and loop resistance, insulation resistance, withstand voltage and other detection indicators.

Something about silkscreen printing

In addition to the above content, screen printing is integrated into high-tech membrane switch manufacturing technology, and there are many new content different from traditional screen printing, such as CAD and manual wiring design of membrane switch circuit, the design of isolation layer window and air guide groove, the application of insulating ink and the UV curing, the application of non-metallic conductor carbon paste, the working environment of membrane switch with high-tech computer numerical control (CNC) electronic auto-focus precision punching machine and storage environment.

Obviously we should refer to the working environment and storage environment of the membrane switch. We should consider the structural design and material selection of the membrane switch according to the working environment and storage environment of the membrane switch.

Nowadays, the advanced silkscreen printing has developed into a brand-new modern screen printing technology that integrates high and new technologies such as optics, mechanics, electricity, chemistry, photochemistry, microelectronics, and computers.

For the panel layer, in addition to the color reproducibility and the color rendering of the ink that are concerned in the traditional screen printing, that is, the decorative function of the traditional screen printing, attention must also be paid to the electrical conductivity of the circuit in the production of the circuit layer, prevention of oxidation of silver paste circuits and migration of silver ions, fabrication of multi-layer interchange circuits and reliability of membrane switch products, etc. The high-tech content is obvious.

Silkscreen on membrane switches

The most important features of membrane switches made by screen printing are:

1. Small and light. The membrane switch weighs from a few grams to dozens of grams, which is very easy to carry and disassemble.

2. Good appearance. Modern and perfect screen printing technology get along with perfect design. It produce any pattern you need.

3. Sealing. With unique technology, the membrane switch can be waterproof, oil-proof, pollution-proof and anti-static interference.

4. Excellent conductivity. The circuit of the membrane switch can be printed with carbon paste, silver paste, copper platinum, etc. The conductive layer can be folded at will, and any resistance required can be controlled. Moreover, using a unique technology, the membrane switch can even withstand a high-voltage electric shock of hundreds of thousands of volts without damaging its function.

5. Low cost. The selling price of some membrane switches is not high. Compared with such a multi-functional electronic original device product, the cost is not beyond the reach of other similar products.

6. Long service life. The material used in the membrane switch has good insulation, heat resistance, flexural resistance and high resilience. The printing of the pattern is on the reverse side, so that the silkscreen pattern will not be damaged. As a result, the service life of the membrane switch can generally reach more than three years.