Patent ID: 7834863
Filing Date: 2010-11-16
Classification: G06F,H01Q

Abstract:
1. A stylus pen including a head end and a tip end opposite the head end for a portable wireless terminal having a terminal antenna, an RF (Radio Frequency) board, and a touch screen, the stylus pen comprising: a hollow cylinder detachably disposed in the portable wireless terminal; and a built-in antenna installed in the hollow cylinder and electrically connected to the tip end, wherein when the stylus pen is completely inserted in the portable wireless terminal so that the head end abuts the portable wireless terminal, a conductive board contact portion of the tip end makes contact with an antenna contact portion of the RF board and a nonconductive spring contact portion of the tip end makes contact with a contact spring that is fixed to a conductive bushing of the terminal antenna and that is separated from the antenna contact portion by the tip end, such that the built-in antenna is electrically connected to the RF board and the terminal antenna is electrically disconnected from the RF board.