Membrane Keyboard - 1

Membrane switch design options:
1)Material (for front or face overlay)
Polyester:
1. Highly versatile for embossing
2. Highly resistant to chemicals
3. Better durability
4. For internal and external use, UV resistance
Polycarbonate:
1. Different surface(Glossy, Matt) and thickness(From 0.12mm~2mm)
2. Cost-effective in price
3. For internal and external use
2) Embossing
Rim embossing/pillow embossing/dimple embossing
Graphic overlays can be embossed in order to insert domes/LED, leave space for mechanical keys/LED and provide tactile indications and better tactile feeling.
3)Windows(for display function)
1. Print different colors windows, As transparent grey/Red/green window for display
2. Clear/Transparent window for LCD display
2. Matt/semi-transparent window for LED
4)Keys/buttons
Tactile keys---with metal dome or poly dome
Non-tactile--silver printing dots with flat key
5) Embeded LEDs
Small, brilliant lights only about 0.02'' in height. Avaliable in several vibrant colors.
LED colors: White, yellow, orange, green, red, or double colors LED.
6)Cable
It is an extension of the printed circuit and is used to communicate with your device.
7)Types of connector
1. Zero insertion force (ZIF) connector; 2. Female connector; 3. Male connector
8) EMI / RFI / ESD Shielding
Use an aluminum foil shielding / a clear ITO electrical conductive polyester
9) Adhesive
Mostly used are 3M-double-side glue
10)Backplate-
In aluminum, polycarbonate, acrylic, PCB