<p>The present invention relates to a stylus pen and a touchscreen module. According to an embodiment of the present invention, a stylus pen includes: a receiving unit configured to receive a predetermined driving signal; a synchronizing unit configured to generate a signal synchronized with the received driving signal; a frequency adjusting unit configured to change a frequency of the synchronized signal; and a transmitting unit configured to transmit a signal outputted from the frequency adjusting unit.</p>
