CN202600676U

CN202600676U - Capacitive touch screen

Info

Publication number: CN202600676U
Application number: CN 201220280827
Authority: CN
Inventors: 余正明
Original assignee: Huizhou City Huan Da Photoelectric Display Science And Technology Ltd
Current assignee: Huizhou City Huan Da Photoelectric Display Science And Technology Ltd
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-12-12
Anticipated expiration: 2022-06-15

Abstract

The utility model relates to a capacitive touch screen, which comprises a glass layer and a capacitive inductor, wherein the capacitive inductor is arranged below the glass layer and the capacitive inductor and the glass layer are adhered by using a transparent optical adhesive. The thickness of the transparent optical adhesive is controlled to be 50-175 mum, and the thickness of the glass layer is controlled to be 0.55-1.2 mm. The capacitive inductor comprises a PET (Polyethylene Terephthalate) thin film and an ITO (Indium Tin Oxide) wire which is arranged on the PET thin film; and two electrodes of the ITO wire are led out through a screen printing silver adhesive and are in press fit with an FPC (Flexible Printed Circuit) through an anisotropic conductive adhesive, so that communication with a control chip on the FPC is realized. The capacitive touch screen has a concise structure; only one layer of ITO film is adopted as a touch sensor, so that thinness of an application terminal product is facilitated; and meanwhile, the touch screen has better light transmittance and low haze, so that the power consumption can be reduced under the same condition and the service life of a power source of a terminal such as a mobile phone can be prolonged.

Description

A kind of capacitance touch screen

Technical field

The utility model relates to the touch screen technology field, is specifically related to a kind of capacitance touch screen.

Background technology

Film projection-type capacitive touch screen commonly used on the market at present mainly is Glass+ITOfilm+ITO film (being called for short a GFF) structure.As shown in Figure 1, its upper strata is a tempered glass, and two-layer ITO film is arranged below; Fit together with two-layer optical cement between the three, this framework, the X electrode of ITO figure and Y electrode are distributed in respectively on the two-layer ito thin film; Though the production technology of this framework and IC algorithm be comparative maturity all, but has distinct disadvantage: at first two-layer ito thin film starting material use amount is big, on the high side; Make transmittance reduction, the mist degree of touch-screen low simultaneously, cause touch-screen optical property variation.In addition, terminals such as intelligent mobile phone are also more and more developed to lightening compact direction, and the touch-screen thickness of two-layer ito thin film also is difficult to satisfy the requirement of these smart mobile phones.

The utility model content

The problem that the utility model need solve provides a kind of good transmittance, capacitance touch screen simple for structure.

The technical scheme of the utility model is following: a kind of capacitance touch screen; Comprise glassy layer, have the capacitive sensing device, it is characterized in that at glassy layer; Said glassy layer and capacitive sensing device adopt the transparent optical glue bond, and said transparent optical cement thickness is 50um ~ 175um.

Preferably, said glassy layer is that thickness is 0.55 ~ 1.2mm, the hardness tempered glass layer greater than 6H.

Concrete, said capacitive sensing device comprises the PET film and is arranged on the ITO cabling on the PET film that ITO cabling the two poles of the earth are drawn through the silk-screen elargol.

Concrete, anisotropic conductive and FPC pressing are passed through in said ITO cabling the two poles of the earth, the control chip communication on realization and the FPC.

Compared with prior art, the said touch-screen of the utility model only adopts one deck ITO film as touch sensor, is beneficial to the lightening of application terminal product; Simultaneously, said touch-screen has better transmittance and low haze, under equal conditions can reduce the power supply use amount, the power using time at terminals such as prolongation mobile phone; Simplify product structure, can reduce the production procedure of product, reduced raw-material use, improved the finished product yield simultaneously again.

Description of drawings

Fig. 1 is the said touch-screen example structure of a utility model synoptic diagram.

Embodiment

In order to let those skilled in the art can understand the technical scheme of the utility model better, the utility model is done further to set forth below in conjunction with accompanying drawing.

Like Fig. 1, the capacitance touch screen that the utility model disclosed comprises glassy layer 1, transparent optical glue-line 2, capacitive sensing device 3 successively.Capacitive sensing device 3 is arranged on glassy layer 1 below, and the two adopts the transparent optical glue bond.Transparent optical cement thickness is specific, forms transparent optical glue-line 2.

In the utility model, said transparent optical glue-line 2 THICKNESS CONTROL are at 50um ~ 175um, preferred 80 um, and light transmittance requirement is more than 98%.Said glassy layer 1 THICKNESS CONTROL is at 0.55 ~ 1.2mm, and the hardness of glass needs greater than more than the 6H, and light transmittance requirement is more than 93%.Here the glass of using not only requires to have high transmission rate, also require to have physical strength preferably, so glass surface will carry out chemical enhanced processing.

Said capacitive sensing device 3 comprises PET (plastics) film 32 and is arranged on ITO (tin indium oxide) cabling 31 on the PET film 32 that ITO cabling the two poles of the earth are drawn through the silk-screen elargol; Anisotropic conductive and FPC pressing are passed through in said ITO cabling the two poles of the earth, the control chip communication on realization and the FPC.

The utility model is simple for structure, and finished size is thinner, is beneficial to the lightening of application terminal product, simultaneously, and function admirable.

Present embodiment is the more excellent embodiment of the utility model; Need to prove; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1. a capacitance touch screen comprises glassy layer, has the capacitive sensing device at glassy layer, it is characterized in that, said glassy layer and capacitive sensing device adopt the transparent optical glue bond, and said transparent optical cement thickness is 50um ~ 175um.

2. capacitance touch screen according to claim 1 is characterized in that, said glassy layer is that thickness is 0.55 ~ 1.2mm, the hardness tempered glass layer greater than 6H.

3. capacitance touch screen according to claim 2 is characterized in that, said capacitive sensing device comprises the PET film and be arranged on the ITO cabling on the PET film that ITO cabling the two poles of the earth are drawn through the silk-screen elargol.

4. capacitance touch screen according to claim 3 is characterized in that, anisotropic conductive and FPC pressing are passed through in said ITO cabling the two poles of the earth, the control chip communication on realization and the FPC.