公开(公告)号：US20210072862A1

公开(公告)日：2021-03-11

申请号：US16644806

申请日：2018-09-04

Applicant: HiDeep Inc.

Inventor： In Uk JEONG ,  Gi Duk KIM ,  Hyoung Wook WOO ,  Tae Hoon KIM ,  Bong Jin SEO

IPC: G06F3/044

Abstract: A touch input device capable of detecting touch pressure according to an embodiment of the present invention includes a display module and a pressure sensor layer disposed on a lower portion of the display module, wherein an adhesive layer is present between the display module and the pressure sensor layer to adhere the pressure sensor layer to the display module, and the pressure sensor layer includes a structure in which a first strain gauge is formed on an upper surface of a substrate and a second strain gauge is formed on a lower surface of the substrate. When pressure is applied to the display module, the display module is bent, the electrical properties of each of the first strain gauge and the second strain gauge are changed as the display module is bent, and the Young's Modulus of the substrate is greater than the Young's Modulus of the adhesive layer.