US Patent 7256611 Cross-bar matrix with LCD functionality

A cross-bar matrix includes a plurality of matrix cells arranged in rows and columns wherein each row of cells is associated with a signal input and each column of cells is associated with a common signal output. An enable input controls whether at least a portion of the cells couple a signal on the associated common signal input to a signal output associated with a cell or couple an LCD signal to a signal output and exclude control of the at least portion of said plurality of cells by the control input.