MOBILE TERMINAL COMPRISING STYLUS PEN AND TOUCH PANEL

摘要

A mobile terminal having a stylus pen and a touch panel is provided. The mobile terminal includes a touch panel having a plurality of touch panel electrodes, and a stylus pen provided to transmit and receive an electrical signal to and from the touch panel using capacitive coupling, wherein the stylus pen includes a main body, a pen tip formed of a conductor and protruding to outside of the main body to apply a touch to the touch panel, and an LC circuit provided within the main body, configured to include an inductor and a capacitor, and electrically connected to the pen tip to generate capacitive coupling between the LC circuit an the touch panel.

主权项

1. A touch panel configured to detect a touch position by using a change in capacitance of a plurality of touch panel electrodes arranged in a first direction and a second direction, the touch panel comprising:
a pen signal detecting device configured to be connected to at least one of the plurality of touch panel electrodes, and detect pen pressure of an input unit brought into contact with the plurality of touch panel electrodes, wherein the pen signal detecting device comprises: an alternating current (AC) signal generating unit configured to generate an AC signal to be transmitted to the plurality of touch panel electrodes; a pen pressure detecting unit configured to receive a signal transmitted from the input unit by way of the plurality of touch panel electrodes, and determine pen pressure applied to the input unit; and a switching unit configured to cause the plurality of touch panel electrodes to be selectively connected to the AC signal generating unit or cause the plurality of touch panel electrodes to be selectively connected to the pen pressure detecting unit.