Flat Panel Membrane Keyboards

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Flat-Panel Membrane Keyboards Manufacturer
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Flat-panel membrane keyboards are most often
found on appliances like microwave ovens or
photocopiers. A common design consists of three
layers. The top layer that is the one the user
touches has the labels printed on its front and
conductive stripes printed on the back.
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Under this it has a spacer layer, which holds the
front and back layer apart so that they do not
normally make electrical contact. The back layer
has conductive stripes printed perpendicularly to
those of the front layer. When placed together,
the stripes form a grid.
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When the user pushes down at a particular
position, their finger pushes the front layer
down through the spacer layer to close a circuit
at one of the intersections of the grid. This
indicates to the computer or keyboard control
processor that a particular button has been
pressed.
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Generally, flat-panel membrane keyboards do not
have much of a feel so many machines which use
them issue a beep or flash a light when the key
is pressed. They are often used in harsh
environments where water- or leak-proofing is
desirable. Although used in the early days of the
personal computers they have been replaced by the
more improvised mechanical switch keyboards.
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Full-travel membrane-based keyboards are the most
common computer keyboards today. They have
one-piece plastic key top/switch plungers which
press down on a membrane to actuate a contact in
an electrical switch matrix.
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Polytech has over 500 employees operating in
manufacturing facilities located in China (Dong
Guan Shanghai), and with its international
sales office located at the business hub of Asia,
Singapore. Their collection of technology and
skills in the manufacturing process includes
Silicon rubber, Metal/ Poly dome, Plastic
molding, Spray Painting, Lens and Electronics
through world-class practices.
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Together collaborating with its associate
companies to further enhance its most effective
and efficient solution in the entire
manufacturing process, Polytech challenges itself
to give its customer's the best in Cost, Quality
and Customers' Satisfaction.
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Polytech is a leading no.1 manufacturing company
in Singapore for Industrial rubber products which
are Automative keypad, Consumable keypad, setup
box, security device, automative rubber
components, domes and touch panel with affordable
cost and effective quality.
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Suppliers Please Come And Visit Us Today
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Polytech Component Pte Ltd Contact Us 10 Ubi
Crescent 04-68 Singapore - 408564 Tel 1
65 6742 7738 Tel [phone] Fax
65 6749 7793 Mail enquiry_at_polytech.com.sg We
b http//www.polytech.com.sg/