Integrated pressure sensitive lens assembly

A touch screen assembly for an electronic device having a display, comprising:

• a floating lens suspended over said display to allow a degree of freedom.
• an underlying flex film connection layer attached beneath at least a portion of said floating lens;
• four differentially-mounted pressure sensors mounted beneath said floating lens and differentially positioned along an x- and y-axis, said pressure sensors being electrically connected to the electronic device via said connection layer for registering a pressure z from a touch of said lens at each of said four positions over a duration of said touch of said lens;
• a circuit for converting said pressure z from a touch of said lens at each of said four positions into a time-based sequence of digital data sets (x1-4, y1-4, z1-4), each data set comprising a sequence of data points x, y, z for each of said four 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 by removing non-relevant data points x, y, z from said time-based sequence and interpreting said filtered data sets (x1-4, y1-4, z1-4) as a single data set x, y, z) representative of a touch coordinate and for generating a control signal in accordance with said touch coordinate.

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 pressure sensors mounted below said lens and differentially positioned along an x- and y-axis, each of said pressure sensors being compressed with a preload force p1 . . . m and electrically connected to the electronic device for registering a pressure Pci-m from a touch of said lens at any position along said x- and y-axis and for providing an analog differential pressure signal over a duration of said touch of said lens;
• a circuit for converting said analog differential pressure signal into a time-based sequence of data sets (x1-m, y1-m, z1-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 compensating said time-based sequence of data sets (xi-m, yi-m, zi-m) by adjusting data points z1-m within said time-based sequence in accordance with a formula Pc1 . . . m=z1-m−Pc1-m, and for interpreting said modified time-based data sets (xi-m,yi-m, pci-m, as a sin le non-time-based data set x, y, z) resentative of a touch coordinate to provide an exact touch-coordinate and for generating a control signal in accordance with said touch coordinate.