Rich In Color And Elegant In Appearance Membrane Switch Overlay
Light Weight And Small Size
The keys on the membrane switch use different colors to indicate
the position, shape and size of the key body, which is more common
in the initial stage of the membrane switch. Three-dimensional
membrane switch: Usually, the keys on the membrane switch only use
color to express the position, shape and size of the key body. In
this way, the accuracy of the operation can only be recognized by
the operator's vision, because there is no appropriate feedback
information to indicate whether the finger is pressed in the
effective range of the switch to make the switch act, thus
affecting the confidence in the monitoring of the whole machine and
the speed of operation. A kind of membrane switch that makes the
switch key body slightly raised, slightly higher than the panel,
forming a three-dimensional shape, called a three-dimensional key
switch. The three-dimensional key can not only accurately define
the range of the key body, improve the recognition speed, make the
operator's sense of touch more sensitive, but also enhance the
decorative effect of the appearance of the product. The production
of the three-dimensional key
PET Membrane Switch Overlay Description:
The main technical indicators
1. Max size: single sided, double sided:600mm * 500mm Multi-layer:
400mm * 600mm
2. Processing thickness:0.2mm -4.0mm
3 Copper foil substrate thickness: 18μ(1/ 2OZ ),35μ( 1OZ ),70μ( 2OZ
)
4 Common material: FR-4 , CEM-3 , CEM-1,
Polytetrachloroethylene,FR-1(94V0,94HB)
5. Light copper,Nickel-plated,Gilded,HAL；Immersion
Gold,Antioxidant,HASL,Immersion Tin,etc.
Process Capability
1. Drilling:The minimum diameter 0.1mm
2. Hole metallization:Minimum aperture 0.2mm,Thickness / aperture
ratio 4:1
3. Wire width: Minimum:Gold plate 0.10mm, Tin plate0.1mm
4. Wire spacing: Minimum:Gold plate 0.10mm, Tin plate0.1mm
5. Gold plate: nickel layer thickness:≧2.5μ,Gold layer thickness:
0.05-0.1μm or according to customer requirements
6. HASL: tin layer thickness:≧2.5-5μ
7. Paneling: Line-to-edge minimum distance: 0.15mm hole to edge
minimum distance: 0.15mm smallest form tolerance: ± 0.1mm
8. Socket chamfer: Angle: 30 degrees, 45 degrees, 60 degrees Depth:
1-3mm
9. V Cut: Angle: 30 degrees, 35 degrees, 45 degrees Depth:
thickness 2/3 Minimum size: 80mm * 80mm
PET Membrane Switch Overlay Applications:
1. The mobile phone
Focuses on the flexible circuit board light weight and thin
thickness. Can effectively save the volume of products, easy
connection of the battery, microphone, and buttons and into one.
2. Computer and LCD screen
Use the one line configuration of flexible circuit boards, and thin
thickness. The digital signal into the picture, through the LCD
screen
3. CD player
Focuses on three dimensional assembly characteristics of flexible
circuit boards and thin thickness. The huge CD to carry around
