Anti-ESD Solution

When a user manipulates a membrane switch, ESD(electrostatic discharge) could happen and the voltage can reach up to 15KV, which is potentially harming the circuits and embedded components in membrane switch. To protect the membrane switch from being damaged by EDS, ElecFlex provides the following 2 solutions.
1. Screenprint a grid on an additional layer by using silver or conductive ink.
This layer has to be grounded and will be placed between the circuit layer and the graphic overlay. When ESD happens, the discharge will follow to the earth ground through this grounded grid layer. And the circuits and components will be protected.
2. Add an additional grounded conductive foil under the graphic overlay, typically Aluminum foil. In this way, the circuit will be protected with the discharge reaching earth ground via this Aluminum foil.

Overlay material:

Polyester/Polycarbonate

Oversize:

<800x400mm

Colors:

<=13

Offset printing:

Optional

Embossing:

Pillow emboss ,rim emboss or flat key

Dome:

Stainless steel, nickel plated(recommend) ,gold plated or polydome

Embedded LEDs:

Optional, single color, bi-color or tri-color

Embedded resistor:

Optional

Shielding layer:

Silver ink grid, carbonate grid or aluminum foil

Waterproof design:

Optional

Backlight design:

Optional

Connector:

2.54mm pitch female housing ,1mm pitch ZIF connector, or 2.54mm pitch male connector

Thickness:

>=0.8mm

If membrane switch needs to provent turbance caused by ESD, we can set a shielding layer in the membrane switch.

Overlay material: polyester(recommend) or polycarbonate

Oversize: <800x400mm

Colors: <13

Embossing: pillow emboss, rim emboss or without emboss

Dome: metal dome or polydome

Embedded LEDs: optional

Embedded resistor: optional

Anti-ESD: shielding layer design

Waterproof design: optional

Backlight design: optional

Connector: 2.54mm pitch female housing or 1mm pitch ZIF connector

Thickness: >= 0.6mm