Patent ID: 9146649
Filing Date: 2015-09-29
Classification: G06F

Abstract:
1. A passive touch pen for a capacitive touch screen, the passive touch pen comprising: a pen tube comprising a vent; a fixing post located at a front end of the pen tube, and comprising a first perforation and a second perforation, wherein the first perforation is open to a top surface of the fixing post, and the second perforation is open to a lateral surface of the fixing post; and a conductive rubber tip sheathed around the fixing post and exposed outside the front end of the pen tube, wherein there is a vacant space between the conductive rubber tip and the top surface of the fixing post, wherein when the conductive rubber tip is compressed, air within the vacant space is discharged out of the vacant space, wherein when the conductive rubber tip is no longer compressed, air is introduced into to the vacant space through the vent, the second perforation and the first perforation, so that the conductive rubber tip is restored to an original non-compressed shape.