A passive matrix or electrophoretic display device comprising: a combined panel circuit operable to perform capacitive sensing responsive to application of a first voltage and updating of an image displayed by the display device responsive to application of a second voltage, the combined panel circuit including a top conductive layer and a bottom conductive layer which are configured to implement a first electrode pattern and a second electrode pattern , respectively, across which the first voltage and the second voltage are applied, the first electrode pattern formed as horizontal control lines and the second electrode pattern formed as vertical control lines , intersections of the horizontal control lines and the vertical control lines corresponding to pixel positions of the display device, wherein display particles are sandwiched between the top conductive layer and bottom conductive layer and the display particles at a pixel position change between states in response to applying the second voltage across a horizontal control line and a vertical control line at the pixel position to update the image; and a controller configured to measure via the combined panel circuit capacitance associated with touch input at the pixel positions of the display device by selectively applying the first voltage across the first electrode pattern and the second electrode pattern ; and cause formation of an image for display via the display device by applying the second voltage across the first electrode pattern and the second electrode pattern , wherein the first voltage is insufficient to activate the display particles . a combined panel circuit operable to perform capacitive sensing responsive to application of a first voltage and updating of an image displayed by the display device responsive to application of a second voltage, the combined panel circuit including a top conductive layer and a bottom conductive layer which are configured to implement a first electrode pattern and a second electrode pattern , respectively, across which the first voltage and the second voltage are applied, the first electrode pattern formed as horizontal control lines and the second electrode pattern formed as vertical control lines , intersections of the horizontal control lines and the vertical control lines corresponding to pixel positions of the display device, wherein display particles are sandwiched between the top conductive layer and bottom conductive layer and the display particles at a pixel position change between states in response to applying the second voltage across a horizontal control line and a vertical control line at the pixel position to update the image; and a controller configured to measure via the combined panel circuit capacitance associated with touch input at the pixel positions of the display device by selectively applying the first voltage across the first electrode pattern and the second electrode pattern ; and cause formation of an image for display via the display device by applying the second voltage across the first electrode pattern and the second electrode pattern , wherein the first voltage is insufficient to activate the display particles . <EOS>