US Patent 7980865 Substrate with raised edge pads

A separable electrical connection may be provided with a landside pad on one of two electrical components to be joined. The landside pad may be made up of two parts, including a flat portion and a raised edge formed on the flat portion. In some embodiments, the raised edge may have a closed geometric shape. Then, a socket contact engaging the junction between the flat portion and the raised edge is prevented from sliding off of the landside pad by the raised edge. In addition, dual areas of electrical connection can be established between both the flat portion and raised edge of the landside pad and the correspondingly shaped pair of portions on the socket. This increases the electrical efficiency of the connection and its security.