Logitech Europe S.a.

Logitech, Inc.

Marc Ledin

Bernard Kasser

Jean-Philippe Fricker

Stephen J Bisset

Gilles Van Ruymbeke

A joystick that detects position and movement using a capacitive sensor. The joystick has a stick mounted to allow movement within a housing, a conductive element at a first end of the stick, and a capacitive sensor. The capacitive sensor may be a capacitive touchpad. It determines position by measuring the change in capacitance on a set of conductive traces. The capacitive sensor may be shaped as a plane or may be hemispherically-shaped. The conductive element may also be triangular or other distinctive shape to allow detection of movement. An advantage of such a joystick is that absolute positioning may be determined, along with relative positioning.

Digital joystick using capacitive sensor

An improved flexible substrate for a touchpad, with the flexible substrate having conductive ink for forming a sensor array. A printed circuit board is also used, but only for the components which need to connect to the array, and not the array, thus giving a smaller printed circuit board. The printed circuit board can have the components compactly mounted on it taking advantage of the close spacing available in PC board technology. The PC board itself has wider spacing on its contacts at its outer edges, allowing it to be attached by conductive glue to the flexible substrate.

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Menlo Park, CA, United States of America

Marc Ledin