公开(公告)号：US20190204959A1

公开(公告)日：2019-07-04

申请号：US16331709

申请日：2017-08-09

Applicant: HiDeep Inc.

Inventor： Beom Kyu Ko ,  Bon Kee Kim

IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333

CPC classification number: G06F3/044 ,  G02F1/13338 ,  G06F3/041 ,  G06F3/0416 ,  G06F2203/04105

Abstract: A touch input device capable of detecting pressure of a touch on a touch surface may be provided. The touch input device includes: a display module including a display panel; a substrate which is disposed below the display module and is a reference potential layer; and one or more pressure electrodes which are formed on the display panel. The display panel includes electrodes used to drive the display panel. A drive signal Tx which is applied to the pressure electrode is simultaneously applied to one or more of the electrodes used to drive the display panel. A capacitance which is detected at the pressure electrode is changed by a distance change between the pressure electrode and the substrate due to the pressure applied to the touch surface. A magnitude of the pressure applied to the touch surface is calculated based on the detected capacitance calculated from the capacitance which is detected at the pressure electrode.