公开(公告)号：US20140176496A1

公开(公告)日：2014-06-26

申请号：US14132395

申请日：2013-12-18

Applicant: Japan Display Inc.

Inventor： Kohei Azumi ,  Yoshitoshi Kida

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0418

Abstract: According to an aspect, a touch detection device includes a drive unit that supplies an excitation signal having at least variable magnitude to a first electrode at a predetermined period for detecting approach or a touch of an object; a detection unit electrically coupled to a second electrode provided to be opposed to the first electrode to detect approach or a touch of the object according to an output value from the second electrode; and an element that electrically couples the drive unit and the detection unit, receives the excitation signal from the drive unit, and has a predetermined size of electrostatic capacitance. The touch detection device corrects an output value from the second electrode by using an output value from the element and the output value from the second electrode obtained at the same timing.

Abstract translation: 根据一个方面，一种触摸检测装置包括：驱动单元，其以预定周期向第一电极提供具有至少可变大小的激励信号，用于检测物体的接近或触摸; 电耦合到与第一电极相对的第二电极的检测单元，用于根据来自第二电极的输出值检测物体的接近或触摸; 以及将驱动单元和检测单元电耦合的元件，从驱动单元接收激励信号，并具有预定尺寸的静电电容。 触摸检测装置通过使用来自元件的输出值和来自在相同定时获得的第二电极的输出值来校正来自第二电极的输出值。