Membrane Switch with LED

Description

1：Membrane switch has below main advantages.
　　　　1）Small and portable. Generally a membrane switch is several or dozens
　　　　　 grams, it is quite convenient to carry or disassemble.
　　　　2）Aesthetic appearance. It adopts advanced silk screen printing technology,
　　　　　 with special design; we can provide any custom solution you need.
　　　　3）Sealing. To meet customer's unique needs of the program, we can design
　　　　　 the membrane switch to be water- proof, grease proofing, dust-proof, and
　　　　　 ***** with unique technologies, the membrane switch can endure a
　　　　　 high voltage.
　　　　4）Good conductivity. The circuitry is printed with carbon, silver, copper foil and
　　　　　 so on, it can be freely folded, and the resistance can be limited according to
　　　　　 customer's specification.
　　　　5）Low cost. Membrane switch is low price, some even costs only cents.
　　　　　 Compare to other electronic components which have same function, it is
　　　　　 exactly cheap price.
　　　　6）Long lifetime. The materials are with high isolation, thermal resistance, fold
　　　　　 resistance and rebound resilience. Moreover, the graphic can not be
　　　　　 damaged because of its second surface printing; the lifetime is usually
　　　　　 above 3 years.

2：Product's direction:
　　To analyze products in current market, most of them are getting to be short, small,
　　lightweight and thin. Membrane switch is just in accordance with this design, which
　　is an electronic component that in combination of art and technology.

3：Type of membrane switch:
　　Main types: There are many different types and layouts of membrane switch, its
　　　　　　　　basic function like travel, operating force, life time mainly depend on
　　　　　　　　type of key and material. The main types can be sorted as follows:
　　　　　　　　Membrane switch with flat keys, membrane switch with embossed keys
　　　　　　　　(rectangle or dome), membrane switch with metal dome or polydome,
　　　　　　　　tactile or non-tactile, membrane switch with LCD window or embedded
　　　　　　　　LED, and so *****

4：According to the tactile feeling, it can be classified to 3 types.
　* Metal dome keypad: it has metal domes inside, with contacts above them, the
　　　　　　　　　　　electric loop is generated by finger operating.
　　　Advantage:  1) Good tactile feeling.
　　　　　　　　　2) Long lifetime even being used in high temperature condition.
　* Polydome keypad: Poly dome is an embossed dome in the circuitry layer of
　　　　　　　　　　membrane switch, it is quite durable, and the travel is a
　　　　　　　　　　little shorter than metal dome keypad. In some applications,
　　　　　　　　　　the polydome can be processed in top overlay layer, this reduces
　　　　　　　　　　numbers of layer. Operating force is influenced by material
　　　　　　　　　　thickness, diameter and height of the keys.
　　　Advantage:  1) Quite durable.
　　　　　　　　　2) It can be well operated for millions of times.
　* Non-tactile keypad: no tactile feeling, for non-tactile membrane switch, it generally
　　　　　　　　　　　　utilizes other way to show what the Keys’ status is.
　　　Advantages: 1) Available in big area.
　　　　　　　　　2) Lowest cost among all kinds of membrane switches.

5： At TCF, we manufacture complete line of membrane switches, our experienced
　　design team are ready to work with you to design membrane switches to meet
　　your unique needs of your project.
　　1) Graphic overlay with or without embossing.
　　2) Tactile with metal dome or polydome or non-tactile
　　3) Embedded LED or other surface mount components.
　　4) Waterproof or UV resistant.
　　5) Electroluminescent backlighting.
　　6) ESD shielding (Aluminum foil or whole layer with silver and carbon coated).
　　7) Tail with or without connector (male or female pin).