If you are using a 7-segment display or an LCD that is circuit board mounted this idea may be perfect for you. Instead of using a harness to connect the display to the main board, solder the display board directly to the main board.  Design the board so the copper conacts run all the way to the edge of both boards.  Next, solder the two boards together at a 90 degree angle. Make sure to place some mechanical pads with vias for support and to prevent the pads from …