Project Description


HuaiSong Industrial is one of professional membrane switch panel manufacturers in China.

1. What is a membrane switch panel?

Classified by switch principle, they have two types. In general, they include resistive membrane switches and capacitive membrane switches. Among a variety of technologies, capacitive touch sensing technology has become the mainstream. The manufacturer of membrane switches applies it in domestic appliance and medical devices. This button solution can bring the overall appearance upgrade of the finished product. Generally speaking, each membrane panel miainly consists of an upper graphic overlay and a lower screen printed circuit layer. Its graphic overlay is flat, the user controls the device but has no tactile feeling if pressing. Sometimes, visual and auditory feedback are available, such as the vertical air conditioner.

Video of the Whole Complete Membrane Switches Production Process

2. Common switch panels

These are samples we can produce.

membrane switch panel
membrane switch panel
membrane switch panel
flat membrane switch
flat membrane switch
flat membrane switch

3. Flat membrane switch manufacturing process

The production process of membrane panels is similar to that of membrane keypads. And it includes these procedures.

3.1 Heat shaping PET

Put the polyester film on grills, and push it in the oven. Then, setting the proper baking temperature and time. It aims to reduce the thermal shrinkage of polyester.

3.2 Screen printing

Using polyester film as raw materials of the circuit layer. Screen print conductive ink on it. In general, there are three steps to get printed circuits. Because it needs to place different printed ink on different places. Circuit lines need conductive silver paste, the connector needs carbon ink, and printed UV is necessary to protect other places. For tactile switches like membrane keypad, manufacturer of membrane switches will also offer conductive carbon ink on metal dome positions.

3.3 Baking

After each printing, bake the printed polyester to avoid inks mixing up.

3.4 Positioning hole

During the design and engineering process, our engineer will set the position of holes. Using laser drilling machine to punch holes which are mainly for later testing and assembly.

3.5 ICT test

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membrane keypad manufacturing 2
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membrane keypad manufacturing5

3.6 Visual inspection of the switch circuitry

Checking whether the circuit line is broken. We can also make surface mount LED as customers’ requirements.

3.7 Cover with protective film/adhesive

On the one hand, paste the PE protective film on the printed circuits. Thus, it can protect membrane panels. Also, avoid destroy during the production, processing, moving, storage, and use. Thus, they won’t be polluted, corroded or scratched. As we all know, the PE film protects the original smooth and shiny surface. So we can use it to improve the high quality and market competitive power of custom manufactured membrane switches. On the other hand, stick the back adhesive tape on flex circuits layer or printed circuit boards. So it’s convenient for customers to do the assembly with other parts.

3.8 Die cutting

3.9 Machine terminals

Membrane switch panel manufacturers use the machine to press terminals onto the wire leads.

3.10 Put them into housing

Workers insert the terminal into the housing.

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membrane switch panel manufacturing 7
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membrane switch panel manufacturing 10

3.11 Insulation test

Test membrane switches including the open circuit, short circuit, conductivity, and insulation.

3.12 FT test

3.13 Flat membrane switch appearance inspection

3.14 Packaging

3.15 Spot check

3.16 Product storage

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membrane switch panel manufacturing 12
membrane switch panel manufacturing 13
membrane switch panel manufacturing 14

4. Flat membrane switch advantages

4.1 Safe and stable.

Capacitive sensing custom membrane switch does not require direct human contact with metal, you can use it even with gloves. Thus, it can completely eliminate safety hazards. Also, unlike the electrical switch or mechanical switch, it is more stable. It’s not affected by changes in the resistance of the weather, dry and wet body, which makes it more convenient to use. What’s more, there are no mechanical parts in flat membrane switches and no wear. They have infinite life, so that membrane switch and panel inc can reduce the post-maintenance costs. What’s more, suppliers can place its sensing part behind any insulation layer. And the layer always adopts glass or plastic as materials. Then, it’s easy to make the touch panel which is sealed from the surrounding environment.

4.2 Beautiful appearance.

The graphic interface is the top layer. And it always shows on the touch screen and user interface. There are a wide range of graphic overlay material options for the customer. For all, you have complete design flexibility. So, whether it’s the membrane switch design or keypad design with metal dome, you can make it by yourself. Of course, you can use the selective texturing, button size and shape of graphic overlays as you wish. The membrane panel has a beautiful and stylish appearance. It does not fade, deform and is durable. Basically, it can realize the effect that a wide variety of metal plates and mechanical panels can’t achieve. With the reliability, additional design and manufacture, it can replace existing ordinary panels. For example, metal keypads, membrane switch keypads, conductive rubber keypads, and so on.

4.3 High sensitivity.

The capacitive sensing membrane switch designed for the medical device or household appliance can penetrate the shell. Of course, the shell should be insulating and its thickness can be over 2mm. Then, it can accurately detect the effective touch control of the finger. Furthermore, membrane switch panels have great sensitivity, stability and reliability. And their high quality won’t change due to changes in environmental conditions or long-term use. What’s more, the copper flex circuit switch that HuaiSong Industrial designed and manufactured is waterproof and has a strong anti-interference ability.

4.4 Simple application.

The flat membrane switch is actually a kind of non tactile switch. It doesn’t have tactile buttons, only has a single chip and very few peripheral parts. Furthermore, the switch circuitry is pretty simple, and there is no need for an oscillating circuit. As custom membrane switches manufacturers all know, its production process is simple. Place control panels according to the schematic diagram, then get the effect you satisfy. There are switch sensing series with a tactile feel, single button and a wide variety of special requirements interfaces. So, there is no need to modify the user interfaces MCU master program. It is very easy to interface with a microcontroller to implement various touch control applications.

4.5 Free to adjust.

The execution time of touch response and sensitivity can be adjusted freely according to customer’s needs.

4.6 High cost performance.

HuaiSong membrane switch manufacturer pursues safer, competitive, cost-effective products and a win-win situation. We devote ourselves to being the pioneer of touch switch application popularization and standardization.

5. Features of the switch panel

  • Firstly, working voltage: 2.5V~5.5V

  • Secondly, there are two high sensitivity touch detection channels.

  • Thirdly, no need to perform parameter burning.

  • Fourthly, membrane panels have fast response.

  • Fifthly, it has strong anti-electromagnetic interference capability.

  • Sixthly, the switch panel is waterproof and has operation function with water.

  • Seventhly, it has features of unique environmental tracking and adaptive capabilities.

  • Eighthly, only need low power consumption which typical operating current is less than 25uA.

6. Membrane switch panel application

There is a wide range of applications of capacitive membrane switches control chips. For example, remote control, lamp dimming, various switches, and user interfaces in vehicles, small appliances, and medical devices. Inside the chip, it integrates high-resolution touch detection module and a special signal processing circuit. So that it guarantees the chip has sensitive automatic recognition and tracking function to the environment change. At the same time, clips should meet many high user experience requirements. Such as stability, sensitivity, power consumption, response speed, water resistance, water handling, vibration resistance, and electromagnetic interference resistance.

HuaiSong Industrial is a leading manufacturer in China. We have engineers over 10 years industry experience, who can not only produce but also offer design. Our capabilities include every switch part and membrane switch assembly. Also, HuaiSong constantly persue the membrane switch technology improvement of design, engineering, digital printing, die cutting, and so on. Our company has certified ISO 9001 2015 and ISO 14001 2015. If you have any demand of membrane switch panels, please do’t hesitate to contact us.





8:00am – 5:30pm





8:00am – 5:30pm


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