Active stylus ring electrode
A ring-shaped electrode and electrode technology, which is applied to capacitors that change the effective area of electrodes, capacitors that change capacitance mechanically, circuits, etc., can solve the difficulties in detecting the azimuth and tilt angle of the active stylus, tilt jitter, Problems such as inaccurate tilt
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[0021] In the following description of the examples, reference is made to the accompanying drawings, in which are shown by way of illustrations specific examples that may be practiced. It is to be understood that other examples may be utilized and structural changes may be made without departing from the scope of the respective examples.
[0022] The present invention relates to detecting the orientation of a stylus relative to a surface, such as azimuth and tilt. In one embodiment, touch detection may be performed by detecting capacitance at one or more locations on the stylus relative to the surface, and then using the capacitance(s) to determine the orientation of the stylus relative to the surface. The orientation of the pen relative to the contact surface (eg, touch panel). In some embodiments, the stylus can include a ring electrode configuration that can improve capacitive coupling between the ring electrode (for orientation detection) and the touch panel. In some emb...
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