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Membrane Switches
PCB Membrane Switches
Details of Flex & Rigid Membrane Switches
The circuit of membrane switches can be flex and rigid. It depends on the customer end application and also related to the cost budget and other considerations. For example, life, resistance, connection type on the mainboard, etc.

Usually if the membrane switches need assembled many LEDs, then we suggest to use FPC circuit, it can get more stable LED soldering quality. For the normal application the PET circuit is enough, which is more economical. In addition if the conductor pitch is 0.5mm, although we also can print it, but we still suggest to use FPC circuit. Because of that 0.5mm pitch is too small and it is easy to occur the short circuit problem.

For the Rigid circuit membrane switches, the circuit is rigid printed circuit board. The material of rigid PCB is usually FR4 and Copper. By this type of membrane switch, the connector usually is the SMD connector(sometimes also can be straight through connector). For some application which need very stiff capability, then use PCB circuit membrane switch.

Hotbar Lamination (Heatseal Lamination) of FFC and FPC Tail to PET/ITO/PCB/FPC Circuit Layer:
Sometimes the customer need use the separate FPC or FFC tail connected to the membrane switch PET or PCB or FPC circuit layer, and for the capacitive membrane switches also have such kind of application, then the hotbar lamination (or called pluse hot press lamination, or heatseal lamination) becomes necessary in these application fields. LUPHITOUCH is a professional manufacturer with such kind of lamination capability. We have such kind of assembly machine. We can hotseal the FFC/FPC tail to PET or FPC or PCB circuit of our manufactured membrane switches.

For more information on PCB/FPC Membrane Switches, contact us today.
FPC Membrane Switches
Details of Flex & Rigid Membrane Switches
The circuit of membrane switches can be flex and rigid. It depends on the customer end application and also related to the cost budget and other considerations. For example, life, resistance, connection type on the mainboard, etc.

Usually if the membrane switches need assembled many LEDs, then we suggest to use FPC circuit, it can get more stable LED soldering quality. For the normal application the PET circuit is enough, which is more economical. In addition if the conductor pitch is 0.5mm, although we also can print it, but we still suggest to use FPC circuit. Because of that 0.5mm pitch is too small and it is easy to occur the short circuit problem.

For the Rigid circuit membrane switches, the circuit is rigid printed circuit board. The material of rigid PCB is usually FR4 and Copper. By this type of membrane switch, the connector usually is the SMD connector(sometimes also can be straight through connector). For some application which need very stiff capability, then use PCB circuit membrane switch.

Hotbar Lamination (Heatseal Lamination) of FFC and FPC Tail to PET/ITO/PCB/FPC Circuit Layer:
Sometimes the customer need use the separate FPC or FFC tail connected to the membrane switch PET or PCB or FPC circuit layer, and for the capacitive membrane switches also have such kind of application, then the hotbar lamination (or called pluse hot press lamination, or heatseal lamination) becomes necessary in these application fields. LUPHITOUCH is a professional manufacturer with such kind of lamination capability. We have such kind of assembly machine. We can hotseal the FFC/FPC tail to PET or FPC or PCB circuit of our manufactured membrane switches.
Rubber Keypad Switches
Rubber keypad Membrane Switches = Rubber Keypad + Membrane Switch
Silicone Rubber keypad Switches are excellent choice for device operation controls. It is soft and elastic. It can give user a very nice touch feeling. In addition rubber is also have the following features and benefits:

Excellent resistance to both heat and low temperature (-55℃ to 250℃)
Minimum noise generation due to soft and elastic contact structure
Minimum abrasion and high resistance to SO2 and oxidation even in heavy humidity
Water and contamination resistant

Cosmetically appealing, 3-D Rubber Keypads offer the reliability of a membrane or PCB-substrate switch, with the three-dimensional look and tactile feel of a silicone rubber keypad for a variety of applications including medical, industrial, and commercial products.
Capacitive Membrane Switches
Membrane switches and user interface membrane keypads technology in China mainland. LUPHITOUCH is also an ISO9001, ISO13485, ISO14001, and OHSAS18001, certified manufacturer. Our capacitive touch membrane keypad consists of one or more capacitive touch buttons.

We print the capacitive touch buttons/sensors on PET circuit with the transparent conductive ink. We also use ITO etching technology to make the capacitive touch buttons/sensors.
Through the customized IC chip to control the touch function wanted. Except for the capacitive touch keypads we also manufacture the capacitive touch sensor circuits.

By capacitive touch technology, the overlay materials can be very diverse and not only limited to PET or PC super thin films. For the normal membrane keypads, the function triggered by the mechanical buttons(metal domes or Polydome) and also the common membrane keypads only can use PET, PC film for the graphic overlay.

Use a heavy force to press the buttons to make the conductive pads of the Polydome ormetal domes connected to the conductive pads on circuit layer, then become a loop circuit and occur the function. But for the capacitive touch membrane keypads or circuits, it is different.
We use a variety of overlay materials such as thick glass, PMMA, Polycarbonate panels, etc. The material choice is no longer limited to only a very thin film material, on the contrary, the options are not endless.
Waterproof Membrane Switches
Membrane switches also called membrane keypads to have very wide applications and also have many different using environments. For example in a wet environment, outdoor under sunshine UV and bad weather of rain, boat sailing on the sea, etc. Then a waterproof and anti-UV membrane keypads are necessary for such kind of special application.

LUPHITOUCH manufactured waterproof membrane keypads can meet IP67 and NEMA-4 waterproof standard. For outdoor use, especially exposed under the sunshine UV, anti-UV membrane keypads are also necessary. The common membrane keypads can be easily damaged by strong ultraviolet rays. Although no impact on the function, the graphic overlay will have become ugly and the printed graphics can be faded in a not long time.

In LUPHITOUCHH we use anti-UV PET materials outdoor using membrane keypads. For example the Autotex XE series materials.

For waterproof keypads, we can design a waterproof frame on the membrane keypads to prevent the water from going into the circuit. Also can use rubber keypad wrapped the PCB circuit and use seal the connection circle.

In these special environment applications, the anti-UV and waterproof membrane keypads quality are very important. If the water went into the circuit it will cause your control board failure and then easily cause safety accidents. So a good supplier of such kind of membrane keypads is very important for your application.
UV-Resistant Membrane Switches
Medical Device Membrane Keypad / Antibacterial Membrane Switches
The medical and healthcare industry has super high requirement for the medcial membrane switches, keypads and membrane circuits. They should be much more durable and Antibacterial. The products used in this special industry must have much more strictly production process control. Therefore, they need to use different materials and different production environment.

Also, LUPHITOUCH is such kind of membrane keypads manufacturer which passed the ISO9001 and ISO13485 quality control standards. For our manufactured antibacterial membrane keypads, we use Autotex AM and Reflex antibacterial PET materials and other innoxious materials.

In addition, LUPHITOUCH manufactured products for medical industry includes the membrane-switches, keypads, rubber keypads, graphic overlays, healthcare physiotherapy insole film circuit, touch sensors etc.

If you have any needs please feel free to contact us by jasony@luphitech.com.
Medical Membrane Switches
Medical Device Membrane Keypad / Antibacterial Membrane Switches
The medical and healthcare industry has super high requirement for the medcial membrane switches, keypads and membrane circuits. They should be much more durable and Antibacterial. The products used in this special industry must have much more strictly production process control. Therefore, they need to use different materials and different production environment.

Also, LUPHITOUCH is such kind of membrane keypads manufacturer which passed the ISO9001 and ISO13485 quality control standards. For our manufactured antibacterial membrane keypads, we use Autotex AM and Reflex antibacterial PET materials and other innoxious materials.

In addition, LUPHITOUCH manufactured products for medical industry includes the membrane-switches, keypads, rubber keypads, graphic overlays, healthcare physiotherapy insole film circuit, touch sensors etc.
Backlighting Membrane Switches
Backlighting Membrane Switches means that there is a light source from the backside to light the graphic overlay and provide the indication information to users or when the product used in the night or dark environment it can light the graphic and make the users or workers make buttons press operation correctly and avoid pressing wrong buttons.

There are several types of backlighting ways for the membrane switches. They are:
LED backlighting membrane switches
EL lamp backlighting membrane switches
LGF(Light Guide Film) backlighting membrane switches
Fiber backlighting membrane switches (seldom used nowadays due to their complex manufacturing process and very high cost. It has been replaced by EL lamp backlighting and LGF backlighting technology

For the LED backlighting keypads, the graphic overlay lighted by the backside LEDs assembled on the flex or rigid circuit layer. In this way, it is very simple and also economical.
But it couldn’t get an even lighting effect on the surface. For this backlighting method, the LEDs can be assembled under centered buttons also can be assembled beside the buttons or other areas. For the products need each button to be backlighted, usually design the LEDs under the center of the buttons, then use the center holed metal domes and print transparent color on the graphic overlay.

In this way, the center button will be much brighter than the sides of it. But this way is easy to achieve and also its cost is the lowest. This is suitable for those products with no very high requirement for the evenness of the backlighting.
Backpanel Membrane Keypads
The backpanel membrane switche or membrane keypad is flexible, therefore it is possible to assemble it on top of any machine, equipment, device. But sometimes it needs a back support panel to enhance its inflexibility, or at customer end machine there is a cabinet and need screws and back panel to install the keypad on the machine or device by the screws, then under such kind of application, the membrane keypad with the back panel and even with screws are necessary.

If just need to enhance the keypad’s inflexibility, you can add a PMMA/PC/FR4, etc. another back support panel. When you design your cabinet with screw holes and embed the keypad module assembly. Then you need to use hardware back panels, like stainless steel panel, Al panel, etc. And also most times need to assemble the screws, bolts on the metal back panel.

LUPHITOUCH is such kind of a professional manufacturer and can support any different application.If you want to know more about our backpanel membrane switches services, please feel free to contact us.
Super Big Size Membrane Switches
Silicone Rubber Keypads / Elastomeric Keypad / Elastomer Keyboards
Silicone rubber keypads are the most widely used form of switch technology today. We offer reliability, long life and design flexibility. Conductive rubber switches and keypads were originally developed for the electronics industry to meet the increasing demand for inexpensive momentary switches. Conductive rubber keypads became desirable because they look and feel like traditional push-button style switches, but do not have their inherent disadvantages.

Since their introduction over 30 years ago, conductive rubber switches and keypads have gained enormous popularity and wide-range acceptance because of their reliability, long operational life and excellent tactile feel.

Innovative key coatings for our silicone rubber keypads are silicone, parylene, and Dura (Hard Coat). Silicone rubber keypads can be designed for applications exposed to water and hydrocarbons. Enhanced graphics and lighting options allow your product to incorporate features not found on standard silicone.

Silicone Rubber Benefits:
Silicone rubber is an excellent choice for device operation controls. It possesses the following characteristics:

Excellent resistance to both heat and low temperature (-55℃ to 250℃)
Minimum noise generation due to soft and elastic contact structure
Minimum abrasion and high resistance to SO2 and oxidation even in heavy humidity
Design both tactile and linear feedback
Translucent materials available
Cost effective
Multi-color designs easily accommodated
Water and contamination resistant
Silicone Rubber Keypads
Silicone Rubber Keypads / Elastomeric Keypad / Elastomer Keyboards
Silicone rubber keypads are the most widely used form of switch technology today. We offer reliability, long life and design flexibility. Conductive rubber switches and keypads were originally developed for the electronics industry to meet the increasing demand for inexpensive momentary switches. Conductive rubber keypads became desirable because they look and feel like traditional push-button style switches, but do not have their inherent disadvantages.

Since their introduction over 30 years ago, conductive rubber switches and keypads have gained enormous popularity and wide-range acceptance because of their reliability, long operational life and excellent tactile feel.

Innovative key coatings for our silicone rubber keypads are silicone, parylene, and Dura (Hard Coat). Silicone rubber keypads can be designed for applications exposed to water and hydrocarbons. Enhanced graphics and lighting options allow your product to incorporate features not found on standard silicone.

Silicone Rubber Benefits:
Silicone rubber is an excellent choice for device operation controls. It possesses the following characteristics:

Excellent resistance to both heat and low temperature (-55℃ to 250℃)
Minimum noise generation due to soft and elastic contact structure
Minimum abrasion and high resistance to SO2 and oxidation even in heavy humidity
Design both tactile and linear feedback
Translucent materials available
Cost effective
Multi-color designs easily accommodated
Water and contamination resistant
Graphic Overlays
Graphic Overlay / Nameplates / Labels / Front Panels
An overlay is a kind of silk screen printed or digital printed graphic sheet or panel that is placed on the surface of a product. In addition, Graphic overlays provide a high-quality finish for products, communicate messages, and act as the interface between people and machines. You can make it in a number of ways, however, this greatly depends upon the requirements of the application.

It is possible to print a wide variety of graphic effects on different materials. An adhesive layer covers the underside along with a liner. During assembly, you remove the liner so the graphic can be stick onto the surface of the product. Overlays can be thick or thin, depending on the desired look. They can be just a few colors or they can be photographic in appearance.

LUPHITOUCH Graphic Overlays
LUPHITOUCH utilizes extensive types of materials for overlays. For instance the Autotype PET, GE HP Lexan PC, Reflex PET, PMMA, PC, Glass, etc. for graphic overlays progress. That is suitable for a number of environmental conditions.
We professionally design and manufacture high-quality graphic overlays to serve industrial controls, medical equipment and instruments, energy metering, Airplane, and other markets.

Material: Autotype PET, GE HP Lexan PC, Reflex PET, PMMA, PC, Glass etc.
Printing: silk screen printing, digital printing.
Embossing Buttons: full button embossed, button rim embossed, logo embossed, that selected area embossed, LED windows embossed, can emboss any shape as per customer’s request.
Window: leave some areas that don’t require printing as the window. The window can be clear, can be tint, can be translucent, etc.
Cutouts: make somewhere be cutout which can be suitable to the bottom assembled components extended out.
OCA Lamination Keypads Services
Display Window OCA Lamination Touchscreen / LCD / Lens Membrane Keypads
LUPHITOUCH has 1000 grade anti-static clean room, OCA vacuum lamination machine, defoaming machine and ACF hotbar assembly machine. We can provide the PC lens/touch panel/LCD display assembly on the backside of membrane switch display window. We also can provide the hotbar lamination assembly service for the FFC/FPC/PET cable to PCB, FPC circuit.
Dome Arrays
Graphic Overlay / Nameplates / Labels / Front Panels
An overlay is a kind of silk screen printed or digital printed graphic sheet or panel that is placed on the surface of a product. In addition, Graphic overlays provide a high-quality finish for products, communicate messages, and act as the interface between people and machines. You can make it in a number of ways, however, this greatly depends upon the requirements of the application.
80% customers of LuphiTouch are from USA, Australia, UK, Germany, Austria, France, Italy, Belgium, Sweden, Newzealand etc. countries and areas. We've established good cooperation relations with them already.

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  jasony@luphitouch.com
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