Product spec :
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
Polycarbonate
1.Wide range of surface finishes and thicknesses
2.More cost-effective 3.For internal and external use
2) Embossing--rim embossing pillow embossing dim embpssing
Graphic overlays can be embossed in order to insert domes (tactile), leave space for mechanical keys and provide tactile indications Pedestal embossing
3)Windows ----for display function
1. print colors windows
2.transparent finishes windows
4)Keys/buttons
Tactile keys---with metal dome or poly dome
Non-tactile--silver printing spot
5) Embeded LEDs-
miniature LED, LED colors:white, yellow, orange, green, red, etc.
6)Cable
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 or acrylic
1 Top Graphic Overlay
Function: Provides protection and displays the printed graphics, symbols, and text. It can also have textures or coatings for tactile feedback.
2 Spacer Layer
Function: Separates the upper and lower circuits, allowing the switch to operate without creating false signals during normal usage.
3 Circuit Layer
Function: Contains the conductive traces that complete the electrical circuit when the switch is pressed.
4 Adhesive Layer
Function: Ensures durability and longevity by securely attaching the membrane switch to the application surface.
5 Bottom Layer (optional)
Function: Provides additional support and durability, especially in high-use applications.
6 Additional Features
Tactile Domes: Enhance user experience by providing physical feedback when a button is pressed. These can be placed between the graphic overlay and the circuit layer.
