×

ACTIVE STYLUS

  • US 20120062521A1
  • Filed: 05/06/2011
  • Published: 03/15/2012
  • Est. Priority Date: 09/14/2010
  • Status: Abandoned Application
First Claim
Patent Images

1. An active stylus for outputting an electric field in synchronization with a driving signal applied to a driving line coupled to an adjacent cell when the active stylus approaches or contacts a touch screen panel, the active stylus comprising:

  • an electric field sensor configured to sense an electric field generated by the driving signal applied to a specific driving line approached or contacted by the stylus;

    a signal generating unit configured to generate a predetermined signal so that a separate electric field corresponding to the sensed electric field is generated;

    an electric field radiating unit configured to amplify the signal generated from the signal generating unit and output the amplified signal as an electric field;

    a shielding unit configured to shield an electric field for forming a closed loop between the electric field sensor and the electric field radiating unit; and

    a power unit configured to apply power to each of the electric field sensor, the signal generating unit, the electric field radiating unit and the shielding unit.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×