CN104657006A

CN104657006A - Projection-type capacitive touch film ghost point eliminating method

Info

Publication number: CN104657006A
Application number: CN201310588809.6A
Authority: CN
Inventors: 王伟挺
Original assignee: SUZHOU TOUCH PLANET TECHNOLOGY Co Ltd
Current assignee: SUZHOU TOUCH PLANET TECHNOLOGY Co Ltd
Priority date: 2013-11-21
Filing date: 2013-11-21
Publication date: 2015-05-27

Abstract

The invention discloses a projection-type capacitive touch film 'ghost point' eliminating method. According to the achievement principle, two points cannot be uniquely determined in X-dimensionality and Y-dimensionality, so that Z-dimensionality is introduced, and the two points are uniquely determined. The projection-type capacitive touch film 'ghost point' eliminating method comprises the steps of integrating with a specific process, namely integrating with a metal nano-particle printing technology and a copper lead printing technology or printing Z-axis, wherein the Z-axis can be designed to be a straight line, a curve and other shapes.

Description

A kind of projecting type capacitor touch control film ghost point removing method

Technical field

The invention belongs to the field such as digital modeling and electronic application.

Background technology

Projecting type capacitor touch control film is a kind of micro wire that encapsulates is main sensor film, integrates advantages such as accurately responding to location, flexibility and high transparency, for the accurate touch-control location of more than 12 inches touch screens, is also applied to accurate interaction.

Projecting type capacitor technology, a kind of at glass or the horizontal and vertical electrod-array of transparent membrane surface making, the electrode capacitance change utilizing these horizontal and vertical detects the touch-control of finger, and is divided into two types according to the difference of the producing method of electric capacity: self-capacitance film and mutual capacitance film.Self-capacitance be sensor block relatively between electric capacity, when on sensor block apply a pumping signal time, due to the existence of self-capacitance, will between sensor block and ground produce one with pumping signal change electric field.Mutual capacitance is the electric capacity between a sensor block and another sensor block, when a sensor block applies a pumping signal, due to the existence of mutual capacitance, another sensor block can be responded to and receive this pumping signal, the size of the signal received is relevant with the size of mutual capacitance with the frequency of pumping signal with phase shift.

Because self-capacitance film realizes simple, cheap, be used widely in mid and low-end products, but self-capacitance film easily occurs " terrible point " during touch-control 2 while.Fig. 1 is single-point touch, and the position of what (X1, Y1) was unique determine contact, does not exist " terrible point ".Fig. 2 is two point touch-control simultaneously, and red point represents real touch point, system scan transverse axis, determine X1, X2 two lines, system scan longitudinal axis, obtain Y1, Y2 two lines, such transverse axis longitudinal axis is interlaced obtains four point (X1, Y1) (X2, Y1) (X1, Y2) (X2, Y2), system is except red touch point, and system also obtains the green touch point (non-genuine touch point) in Fig. 3, i.e. " terrible point ".System cannot be known and judge which two point is real touch points.

In sum, self-capacitance film outwardness " terrible point " when 2 touch-controls.

Summary of the invention

On the basis of the longitudinal axis and transverse axis, then increase one dimension Z axis, as shown in Figure 4, in conjunction with z axis, the red effectively touch point of determination that can be unique.

In traditional ITO capacitance plate manufacturing technology, be difficult to increase Z axis electrod-array again, and the application in large scale projecting type capacitor film along with nanometer printing technique and copper conductor printing technology, for Z axis electrode display is laid a good foundation.

Embodiment, as shown in Figure 5, increases a Z axis:

(1) silver or other metallic nanoparticle child prints, in printing layout design, increase Z axis, mutual insulating between X, Y, Z, X, Y, Z axis cabling can be the present situations such as straight line, broken line, curve.

(2) copper conductor printing technology, in printing layout design, increase Z axis, mutual insulating between X, Y, Z, X, Y, Z axis cabling can be the present situations such as straight line, broken line, curve.

In the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.

Accompanying drawing explanation

Fig. 1 is single-point touch

Fig. 2 is two point touch-control available point

Fig. 3 is two point touch-control " terrible point "

Fig. 4 uniquely determines two touch points by Z axis

Fig. 5 increases Z axis schematic diagram

Claims

1. realize principle: because X and Y dimension uniquely cannot determine 2 points, therefore introduce Z dimension, unique determines 2 points.

2. with the combination of special process: print or printing z axis in conjunction with metal nanoparticle printing technique and copper conductor printing technology, z axis can be designed to straight line, the present situations such as curve.