I have two boards with touch pads on them and copper fill within 1 mm. They work fine. I think it may depend on the size of the pads, the ones I refer to having the outer ring at 15mm in diameter and the inner pad at 8mm.
I have two boards with touch pads on them and copper fill within 1 mm. They work fine. I think it may depend on the size of the pads, the ones I refer to having the outer ring at 15mm in diameter and the inner pad at 8mm.