WO2017143681A1

WO2017143681A1 - Touch screen

Info

Publication number: WO2017143681A1
Application number: PCT/CN2016/083658
Authority: WO
Inventors: 李学才; 叶丹霞; 龚得杏; 赵丹; 王榕; 杨越强; 武志龙
Original assignee: 意力(广州)电子科技有限公司
Priority date: 2016-02-26
Filing date: 2016-05-27
Publication date: 2017-08-31
Also published as: CN205427803U

Abstract

A touch screen, comprising: a conductive transfer printing film (10), a substrate (20), and a mutual capacitor (30) provided on the substrate (20), the mutual capacitor (30) being provided with an emitter electrode line layer (310) and a receiver electrode line layer (320), the emitter electrode line layer (310) and the receiver electrode line layer (320) being stacked on either of two opposite surfaces of the conductive transfer printing film (10). During processing, one layer of the emitter electrode line layer (310) or receiver electrode line layer (320) is first processed on one face of the substrate (20), then the conductive transfer printing film (10) is transferred through a heat transfer printing technology onto the processed emitter electrode line layer (310) or receiver electrode line layer (320), thereafter a single electrode line is made by replacing the conventional conductive layer with the conductive transfer printing film (10), and finally one layer of the receiver electrode line layer (320) or emitter electrode line layer (310) is processed on the conductive transfer printing film (10). The present invention is simple in process, reducing production costs, and is simple in structure, decreasing touch screen thickness, improving touch accuracy, optical performance and bending resistance.

Description

touch screen

Technical field

The invention relates to a display screen, in particular to a touch screen.

Background technique

At present, the product structure of the touch screen is mainly a GFF structure, as shown in FIG. 1 , which is composed of two layers of ITO (indium tin oxide) film. However, the double-layer ITO structure causes the overall thickness of the touch screen to increase, the cost increases, the manufacturing process is cumbersome, and the optical performance and bending resistance of the product are lowered. The GF1 single-layer multi-point structure has low touch precision and low product yield. The anti-interference ability of the machine is weak. At present, the main GF2 structure products are based on Metal Mesh, and another layer pattern is formed on the front side or the back side. The optical characteristics of the finished product are poor, and can only be applied to large-size touch screens, ITO products. It has poor bending resistance and is easy to break.

Summary of the invention

The object of the present invention is to provide a touch screen capable of reducing product thickness, bending resistance, wide application range, simple processing, and low production cost.

In order to achieve the object of the present invention, the technical solution adopted is:

A touch screen comprises a conductive transfer film, a substrate, and a mutual capacitance disposed on the substrate; the mutual capacitance is provided with an emitter circuit layer and a receiver circuit layer, and the emitter circuit layer and the receiver circuit layer are respectively stacked on the conductive layer The transfer film is on opposite sides of the surface.

When processing, first processing an emitter circuit layer or a receiver circuit layer on one side of the substrate, and then transferring the conductive transfer film to the completed emitter circuit layer or the receiver circuit layer through thermal transfer technology, and then A single electrode line is replaced by a conductive transfer film instead of a conventional conductive layer, and finally a layer of the receiver line layer or the emitter line layer is processed on the conductive transfer film, which is simple in processing and reduces production cost; the structure is simple, and the touch is reduced. The thickness of the control panel improves the touch precision, optical performance and bending resistance, and the bending resistance is good. The touch screen can be made into a curved curved screen, and the application range is wider.

The technical solution is further explained below:

Further, an emitter circuit layer, a receiver circuit layer, a conductive transfer film, and a stack are stacked on the substrate. The emitter circuit layer and the substrate are sequentially stacked from top to bottom.

Further, a receiving circuit layer is stacked on the substrate, and the emitter circuit layer, the conductive transfer film, the receiving circuit layer and the substrate are sequentially stacked from top to bottom.

Further, the touch screen further comprises a double-sided tape and a protective glass, and the protection glass, the mutual capacitance and the substrate are sequentially stacked from bottom to bottom.

Further, the conductive transfer film is a transparent film. Improve the light transmittance of the touch screen.

Further, the substrate is an ITO film, a nano silver film or a metal mesh film.

Further, the total thickness of the emitter wiring layer or the receiving wiring layer and the conductive transfer film was 5 μm. The thickness is reduced by at least 95 μm compared to the thickness of a conventional ITO film.

Compared with the prior art, the present invention has the following beneficial effects:

In the processing of the invention, an emitter line layer or a receiver line layer is first processed on one side of the substrate, and then the conductive transfer film is transferred to the completed emitter line layer or the receiver line layer layer by thermal transfer technology. Then, the conductive layer is replaced by a conductive layer to form a single electrode line, and finally a layer of the receiving layer or the emitter layer is processed on the conductive transfer film, which is simple in processing and reduces the production cost; the structure is simple. Reduce the thickness of the touch screen, improve touch accuracy, optical performance and bending resistance.

DRAWINGS

1 is a schematic structural view of a conventional touch screen;

2 is a schematic structural view of a touch screen according to an embodiment of the present invention.

Description of the reference signs:

10. Conductive transfer film, 20. substrate, 30. mutual capacitance, 310. emitter circuit layer, 320. receiver circuit layer, 40. double-sided tape, 50. protective glass.

detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

As shown in FIG. 2, a touch screen includes a conductive transfer film 10, a substrate 20, and a mutual capacitor 30 disposed on the substrate 20. The mutual capacitor 30 is provided with an emitter circuit layer 310 and a receiver circuit layer 320. The pole line layer 310 and the receiver line layer 320 are respectively stacked on opposite surfaces of the conductive transfer film 10, Among them, the transmission is extremely TX, and the reception is extremely RX.

During processing, an emitter wiring layer 310 is first processed on one side of the substrate 20, and then the conductive transfer film 10 is transferred onto the completed emitter wiring layer 310 by thermal transfer technology, and then passed through the conductive transfer film 10. Instead of a conventional one-layer conductive layer for a single electrode line, a layer of the receiver line layer 320, the receiver line layer 320, the conductive transfer film 10, the emitter line layer 310, and the substrate 20 are finally processed on the conductive transfer film 10. Stacked from top to bottom, the two-layer GF2 structure touch screen is obtained, which is simple in processing and reduces production cost; the structure is simple, the thickness of the touch screen is reduced, the touch precision, the optical performance and the bending resistance are improved, and the bending resistance is improved. Good folding, touch screen can be made into 2.5D, 3D curved surface screen, and the scope of application is wider.

The touch screen can also process the receiving circuit layer 320 on the substrate 20 according to actual needs, then transfer the conductive transfer film 10 onto the receiving circuit layer 320, and finally process an emitter circuit layer on the conductive transfer film 10. 310, the emitter wiring layer 310, the conductive transfer film 10, the receiver wiring layer 320, and the substrate 20 are sequentially stacked from top to bottom.

In the embodiment, the conductive transfer film 10 is a transparent film, which improves the light transmittance and makes the optical performance of the touch screen better.

As shown in FIG. 2, the touch screen further includes a double-sided tape 40 and a cover glass 50. The cover glass 50, the double-sided tape 40, the mutual capacitor 30, and the substrate 20 are sequentially stacked from top to bottom.

As shown in FIGS. 1 and 2, the total thickness of the receiving wiring layer 320 and the conductive transfer film 10 is 5 μm, and the thickness is reduced by 95 μm as compared with the thickness of the conventional one-layer ITO film. The total thickness of the touch screen of the present invention is 905 μm, and the thickness of the conventional touch screen is 1050 μm.

In this embodiment, the substrate 20 is an ITO film, a nano silver film or a metal mesh film, and the conductive transfer film 10 is matched with ITO, metal mesh or nano silver to form a GF2 structure, and the substrate 20 can also be used according to actual needs. Material.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that for the field A person skilled in the art can make several modifications and improvements without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A touch screen, comprising: a conductive transfer film, a substrate, and a mutual capacitance disposed on the substrate, wherein the mutual capacitance is provided with an emitter circuit layer and a receiver circuit layer, and the emitter circuit layer And the receiving circuit layer are respectively stacked on opposite surfaces of the conductive transfer film.
The touch screen according to claim 1, wherein the emitter circuit layer, the receiver line layer, the conductive transfer film, the emitter circuit layer and The substrates are stacked in this order from top to bottom.
The touch screen according to claim 1, wherein the receiving circuit layer, the emitter wiring layer, the conductive transfer film, the receiving circuit layer and The substrates are stacked in this order from top to bottom.
The touch screen according to claim 1, further comprising a double-sided tape and a cover glass, wherein the cover glass, the double-sided tape, the mutual capacitance, and the substrate are sequentially stacked from top to bottom .
The touch panel according to any one of claims 1 to 4, wherein the conductive transfer film is a transparent film.
The touch screen according to claim 5, wherein the substrate is an ITO film, a nano silver film or a metal mesh film.
The touch panel according to any one of claims 1 to 4, wherein a total thickness of the emitter wiring layer or the receiver wiring layer and the conductive transfer film is 5 μm.