FPC vs Metal Pin vs Zebra Connector: Choosing the LCD Interface
The three interfaces
A segment display connects to your PCB in one of three ways: a flexible printed circuit, metal pins, or a zebra (elastomer) connector pressed by the housing. The choice affects assembly, serviceability and the total cost of your product.
FPC — flexible printed circuit
The FPC is bonded to the glass and plugs or solders into your board. It allows fine pitch, thin profiles and free placement of the connector, which is why it dominates compact handheld and metering designs. It needs care during assembly because the bonding area cannot be stressed.
Metal pin (DIP)
Metal pins are the most robust and the easiest to assemble: the pins go through the board and are soldered like any through-hole part. They suit industrial instruments where the display is mounted once and the board is roomy, at the cost of a thicker assembly and a larger footprint.
Zebra connector
A zebra connector needs no soldering at all. The elastomer strip is pressed between the glass and the board by the housing, which makes it the cheapest to assemble in volume and easy to replace in the field. It depends on consistent mechanical pressure, so the housing design has to hold the tolerance.
How to choose
- Compact product, fine pitch, thin profile: FPC
- Industrial instrument, through-hole assembly, maximum robustness: metal pin
- High volume, minimal assembly cost, serviceable design: zebra
If you tell us how your product is assembled and how it is serviced, we will recommend the interface — and confirm the pinout against your controller before tooling.