The production procedures of light switch mainly include: Stamping - injection molding - Cleaning - assembly - molding - Inspection and other processes; The technology of membrane switch mainly includes: silk screen printing - die cutting - assembly - Detection and other processes.
Both of them have high requirements for the production environment.
Relatively speaking, the higher the dust-proof level, the more guaranteed the
product quality. The membrane switch requires high precision, accurate
coordination of all parts, and is also very picky about the appearance and
color of the product. The light touch switch requires a higher degree of
precision, because the cooperation of various parts directly affects the
tracing ability and hand feel of the product, and the requirements for the
performance of the product are very high, but the appearance and color of the
product are not as picky as that of the film switch.
Relatively low price fluctuation of raw materials due to light touch of
the market; The film switch is relatively expensive and bulky, which is greatly
affected by the price of raw materials.
Both the switch with lamp and the membrane switch belong to functional
switches. When the switch with lamp is used, the switch can be turned on by
gently pressing the switch button. When the hand is released, the switch can be
turned off. Its internal structure is realized by the force bouncing of metal
shrapnel.
Membrane switch is a key with its own line. Usually, the top layer is a
panel with text or pattern composed of pet or PC and other materials, the lower
layer is a conductive line, the middle layer is a double-sided adhesive made of
PET material that simulates the form of switch and plays an isolation role, and
the bottom part is usually the contact and connecting line on PET material.
When pressing the key part of the surface layer with your fingers, the
key contact contacts are in contact with the corresponding part of the contact
of the lower part to form a current connection. The light touch switch has
small volume and belongs to standard parts. The size and relevant parameters
must be combined with industry standards, and the color is relatively single;
The membrane switch can be customized in different sizes, appearance and colors
according to the requirements of customers, which is more convenient and
flexible. Membrane switch has good flexibility, closed structure and waterproof
structure, and better adaptability to the environment.
The switch with light cannot generate functions independently, and must
be used with PCB circuit board to form a complete on-off control system; The
membrane switch integrates the panel, switch and conductive line together,
which can form a complete control system independently and provide customers
with an overall switching solution.
