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
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