Patent ID: 8269731

Claim:
A touch screen assembly for an electronic device having an LCD or OLED display module, comprising: a lens over said display module; a plurality n=1 . . . m of differentially-mounted pressure sensors mounted beneath said display module and differentially positioned along an x- and y-axis, said pressure sensors being electrically connected to the electronic device for registering a pressure z from a touch of said lens at any position along said x- and y-axis and for providing an analog differential pressure signal z over a duration of said touch of said lens; a circuit for converting said analog differential pressure signal into a time-based sequence of digital data sets (x 1-m , y 1-m , z 1-m ) each data set comprising a sequence of data points x, y, z for each of said plurality n=1. . . m of differentially-mounted pressure sensors measured at successive time instants during the duration of said touch of said lens; and control software for filtering said time-based sequence of data sets (x 1-m , y 1-m , z 1-m ) by removing non-relevant data points x, y, z from said time-based sequence, and for interpreting the filtered data set as an exact touch-coordinate x, y and pressure z resulting from a touch of said lens along said x- and y-axis, and for generating a control signal in accordance with said filtered and interpreted touch coordinate.