Conductive Silver Ink Printing Membrane Circuit Switch For WIFI Telecommunication Device

Keypad Button Selection

For obtaining a good feedback from the buttons, there are usually two methods:

A. Raising certain areas of the graphic overlay by tooling--Raised button. And the shapes and styles of the embossing can be various flexibly. Common embossing types include: Rim embossing, pillow embossed and poly dome .

B. Adding extra parts on the switch to get the crisp effect--Metal snap domes. it can be provided in several different size,shape and force according to the interface .

Wide range of domes is available:

· Ø 6 to Ø 16 mm

· 150 g to 550 g actuation force

· Typical life greater than 1M cycle

· Dimple and non-dimple versions available

· Round, Side Cut, Legged

· Dome plating options available

 
 Specification:

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