A mini PCB membrane switch is a type of electrical switches, which is clarify by the use of a copper lazer circuit board. The term “PCB” even refers to “printed circuit board”, which is the primary feature driving this switch's popularity.
A mini PCB (or printed circuit board)membrane switch, is mainly made of copper-clad or fiber infused into a resin material. The copper/fiber been used, along with the raw material, creates to determine the laminate's type designation (FR-4, CEM-1, G-10, etc.). FR-4 is the most common material used today.
An acid-resistant solder mask is applied to the copper-clad PCB, and the exposed areas (not covered by the solder mask) are etched away using acid. The exposed copper pathways are plated with various metals to protect the copper from corrosion. Gold plating is often required on many PCBs in critical applications where corrosion and exposure to chemicals is an issue.
The mini PCB membrane switch construction utilizes a PCB (as described above) as the main structure/support substrate, with the graphic overlay on the front of the PCB assembly, and the display (along with the other discrete components) on the back side of the PCB.
This mini PCB memebrane switch not only include LEDs, but also metal dome. The board can add even more design flexibility and can connect directly to the mini PCB membrane switch just as your requested.