WO2016154830A1

WO2016154830A1 - Touch screen module and manufacturing method therefor

Info

Publication number: WO2016154830A1
Application number: PCT/CN2015/075327
Authority: WO
Inventors: 刘自鸿; 魏鹏; 余晓军; 邹翔; 周瑜; 陈鑫
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2016-10-06
Also published as: JP2018509724A; KR20170132272A; CN106211796B; CN106211796A; KR102040074B1; JP6629954B2

Abstract

The present invention relates to a touch screen module, comprising a transparent touch screen and a second element. The touch screen comprises a plurality of first graphs constituted by flags with widths of 1 to 100 microns, and the second element is fixed to the touch screen, and comprises a plurality of second graphs. Under the technical solution of the present invention, flags for alignment, invisible to the naked eyes, are convenient to apply to some special occasions. For instance, the flags can be disposed at positions, exposed on a final product, of a touch screen module without additional space, thereby aiding in miniaturization of the touch screen module. The present invention also provides a manufacturing method for the touch screen module.

Description

Touch screen module and manufacturing method thereof

Technical field

The present invention relates to a touch screen, and more particularly to a touch screen module and a method of fabricating the same.

Background technique

In the process of making a touch screen module, it is usually necessary to connect a transparent component such as a transparent touch screen to an opaque or transparent component such as an opaque FPC. The above two layers of components need to be aligned in the process. Existing alignment methods typically include mechanical positioning methods as well as optical positioning methods. The mechanical positioning method includes a hole positioning method at a corresponding position on the two-layer component, and a hole positioning method for positioning purposes through the corresponding through hole of the column; and a plurality of columns corresponding to the product frame are disposed, and both sides are disposed A frame positioning method in which components are placed in a space surrounded by the plurality of columns to align the two layers of components. However, the error of the mechanical positioning method is large.

The optical positioning method is specifically to print or paste a visible mark on a transparent component, such as a solid circle, and then set another visible mark on another layer component, such as a solid circle, and then the operator will After the marks are aligned, the two elements are combined. This method can improve the positioning accuracy. However, since the mark is visible, the mark is inconvenient in some special occasions. For example, the mark must be placed in a position where the touch screen module is not visible in the final product, that is, additional space is required to set the mark.

Summary of the invention

Embodiments of the present invention provide a touch screen module that can solve the above technical problems and a method of fabricating the same.

A touch screen module includes a transparent touch screen and a second component. The touch screen includes a plurality of A first pattern of indicia having a width between 1 and 100 microns, the second element being fixed to the touch screen and comprising a plurality of second patterns.

A method for manufacturing a touch screen module, the touch screen module comprising a transparent touch screen and a second component, the method comprising: forming a plurality of first patterns formed by marks between 1 and 100 micrometers in width on the touch screen; The second component forms a plurality of second patterns; and determines a positional relationship of each of the first graphics and the second graphics and fixes the flexible circuit board to the touchscreen according to the positional relationship.

Under the technical solution of the present invention, since the mark for alignment is invisible to the naked eye, it is convenient to apply to some special occasions. For example, the mark can be set at the position where the touch screen module is exposed to the final product, and no additional space is required to set the mark, which is advantageous for miniaturization of the touch screen module.

DRAWINGS

The following figures are used to describe various embodiments of the invention in detail in conjunction with the specific embodiments. It should be understood that the various elements of the present invention are not to be construed as a

1 is a flow chart of a method for fabricating a touch screen module according to a preferred embodiment of the present invention.

2 is an exploded, isometric view of a touch screen module made in accordance with the flow of FIG.

3 is a partial enlarged view of the touch screen and the flexible circuit board of the touch screen module of FIG. 2.

Figure 4 is a schematic illustration of the alignment of the two marks of Figure 3.

detailed description

The present invention will be further described in detail below with reference to a plurality of embodiments and the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to FIG. 1 to FIG. 3 , which are flowcharts of a method for fabricating the touch screen module 8 according to the preferred embodiment of the present invention, and an exploded view of the touch screen module 8 and a partial enlarged view of the touch screen module 8 according to the above process. schematic diagram. The touch screen module 8 includes a transparent touch screen 10 and a flexible circuit board 20. The manufacturing method of the touch screen module 8 provided by the preferred embodiment of the present invention includes the following steps:

Step S10: A plurality of first patterns 18 composed of marks 19 having a width of 1 to 100 μm are formed on the touch screen 10.

The capacitive touch screen 10 includes a substrate 12 and a conductive layer 14 disposed on the substrate 12. The substrate 12 can be made of a transparent material, such as glass or polyethylene terephthalate (PET), to facilitate the production of touch-enabled display screen modules or other applications requiring transparency. When the capacitive touch screen 10 is required to have flexibility, the optional PET is used to fabricate the substrate 12, which has the advantages of good light transmission and flexibility, and is easy to manufacture. In the present embodiment, the substrate 12 made of PET has a thickness of about 0.015 to 0.2 millimeters (mm), preferably 0.05 to 0.1 mm, and the substrate within this thickness has good flexibility. Of course, the substrate 12 can also be made of a non-transparent material, such as a metal, without the need for other transparent properties.

The conductive layer 14 may be a transparent conductive film including a metal of a nanometer dimension, such as a film comprising a single metal, an alloy, a metal compound or a combination thereof in any combination of nanometer dimensions, for example, a film including nanowires, including nano metal particles. The film, the film including the nano metal mesh, may of course be a graphene film, a carbon nanotube film, an organic conductive polymer film, an Indium Tin Oxide (ITO) film or any combination thereof. In this embodiment, the conductive layer 14 is a transparent conductive nano-silver film, which is a film comprising a polymer matrix having nano-silver filaments, and the nano-silver filaments are uniformly distributed in the film to make the film transparent. And conductive features. The nanosilver film can be attached to the substrate 12 by coating, silk printing or spraying.

The conductive layer 14 forms a pattern 16 for sensing a touch thereon by laser light. Before the laser, the parameters of the laser can be adjusted. The laser parameters include pulse width, pulse flux, pulse energy, spot size, pulse repetition rate, etc., so that the laser scans the nanosilver film according to a preset path and makes the illumination The nanosilver film is peeled off at high temperatures. As such, the region illuminated by the laser forms a pattern 16 for sensing the touch.

While the pattern 16 is being formed, the laser is also illuminated at a predetermined location and forms a first pattern 18, that is, the first pattern 18 is formed during the formation of the pattern 16, and thus, need not be described in the background art. It needs to be produced by other steps such as printing after the touch screen is completed, which improves the process efficiency. At the same time, it also reduces the number of steps in the background art to find the printing position before printing. In the present embodiment, the first pattern 18 is an elliptical shape formed by the mark 19, and the mark 19 is a laser that irradiates and peels off the portion of the conductive layer 14 on the mark, and further causes the underlying substrate 12 to be burnt. Burning the lines formed by discoloration, however, it will be understood that the indicia 19 may also be discrete points, in which case the first pattern 18 is an elliptical shape consisting of discrete dots, and it should be understood that the first pattern may be other shapes as well.

The parameters of the laser are adjusted such that the width of the line-like mark 19 is between 1 and 100 microns, i.e., greater than 1 micron and less than 100 microns. The line 19 of this width is invisible to the naked eye and is not identifiable by the optical amplifying instrument. The effect that the naked eye can't see but can be positioned. Preferably, the width of the line 19 is between 10 and 40 microns, more preferably between 25 and 35 microns, tested and tested, making it easier to manufacture and easier to identify. Of course, in addition to the above, the laser may be processed to form the pattern 16 for sensing the touch and the first pattern 18 in a manner that is not removed.

Step S20: A plurality of second patterns 22 are formed on the flexible circuit board 20, and the positions of the second patterns 22 and the first patterns 18 match each other and have different shapes. The second pattern 22 on the flexible circuit board 20 may be hollowed out at a position corresponding to the first pattern 18, and the hollow is circular, and the circular shape preferably cuts the ellipse of the first pattern 18 into the circle.

Step S30: align each of the first patterns 18 and the corresponding second patterns 22 and fix the flexible circuit board 20 to the touch screen 10. The first graphic 18 on the touch screen 10 can be identified by a machine vision system. The identification of the ellipse of the first graphic 18 by the machine vision system is a technique familiar to those skilled in the art and will not be described in detail herein. By manually aligning the touch 10 and the flexible circuit board 20, the two are first stacked and substantially aligned. Since the positions of the first and second patterns match each other, the first and second patterns are substantially aligned. Then, after the first pattern 18 is recognized by the machine vision system, the ellipse of the first pattern 18 is inscribed in the circle of the second pattern 22, and the positions of the two are aligned, as shown in FIG. At this time, the touch panel 10 and the flexible circuit board 20 are fixed by hot pressing. The above matching means that when the positions of the touch screen 10 and the flexible circuit board 20 are aligned, the positions of the first and second patterns are also aligned with each other.

In the above-described embodiment for illustrating the present invention, the touch screen module 8 includes the transparent touch screen 10 and the flexible circuit board 20, however, it is understood that the application of the naked eye invisible mark of the present invention is not limited to use on the transparent touch screen 10. The connection with the flexible circuit board 20 may also be the connection of the touch screen 10 to other components. For example, the touch screen 10 may be connected to a transparent protective layer or a transparent glass. In this case, the transparent protective layer or the glass may be provided with a mark formed by a mark having a line width of 1 to 100 μm, and the mark satisfies the features such as the shape and position of the second pattern of the above embodiment, The method can also achieve accurate alignment. In addition, the shape of the two marks is not limited to the above, and the first figure 18 may be a circle, or both.

In the above embodiment, the positions of the first and second patterns are matched to each other so that the alignment can be achieved by means of an artificial means by means of an instrument. However, it will be appreciated that where automated devices are utilized, the locations of the first and second graphics may also not match each other. In this case, the system may determine the first coordinate of the touch screen after identifying the first graphic by the machine vision system; and then determine the second coordinate of the second component after identifying the second graphic; and then calculate two by the system Coordinate difference After the difference in the difference is predetermined, the touch screen or the second component is adjusted by the automation device to align the two, and then the two are fixed to each other.

According to the above description, the method for fabricating the touch screen module of the present invention includes: forming a plurality of first patterns formed by marks having a width of 1 to 100 μm on the touch screen; forming a plurality of second patterns on the second element; Determining the positional relationship of each of the first graphic and the second graphic and fixing the flexible circuit board to the touch screen according to the positional relationship. In the meantime, it should be understood that the order in which the first graphic and the second graphic are formed in the present invention does not affect the implementation of the content of the present invention. Therefore, in the description of the above steps, it cannot be considered that the first graphic is written in front. The first steps.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A touch screen module comprising:

a transparent touch screen comprising a plurality of first patterns formed with indicia having a width between 1 and 100 microns; and

A second component that is fixed to the touch screen and that includes a plurality of second graphics.
The touch screen module as claimed in claim 1 , wherein the touch screen comprises a substrate and a conductive layer disposed on the substrate, the conductive layer is formed with a pattern for sensing a touch, and the substrate is formed with the plurality of The first graphic.
The touch screen module according to claim 2, wherein the conductive layer comprises a metal film having a nanometer dimension, a carbon nanotube film, a graphene film, an organic conductive polymer film, an ITO film, or any combination thereof .
The touch screen module of claim 2, wherein the conductive layer comprises a nanosilver film.
The touch screen module according to claim 2, wherein the plurality of first patterns are formed on the substrate by laser plating the conductive layer and the substrate.
The touch screen module according to any one of claims 1 to 5, wherein each of the second patterns is different in shape from the corresponding first pattern and the positions match each other.
The touch screen module according to any one of claims 1 to 5, wherein the positions of the second patterns and the respective first patterns do not match each other.
The touch screen module according to any one of claims 1 to 5, wherein the width is between 10 and 40 microns.
The touch screen module according to any one of claims 1 to 5, wherein the width is between 25 and 35 microns.
The touch screen module according to any one of claims 2 to 5, wherein the substrate has a thickness of between 0.015 and 0.2 mm.
A method for manufacturing a touch screen module, the touch screen module comprising a transparent touch screen and a second component, the method comprising:

Forming a plurality of first patterns formed by marks having a width between 1 and 100 microns on the touch screen;

Forming a plurality of second patterns on the second component; and

Determining the positional relationship of each of the first graphic and the second graphic and fixing the flexible circuit board to the touch screen according to the positional relationship.
The manufacturing method of claim 11 , wherein the touch screen comprises a substrate and a conductive layer disposed on the substrate, and the method for manufacturing the touch screen module further comprises: forming the conductive layer on the conductive layer by laser Sensing the pattern of the touch.
The method according to claim 12, wherein the step of forming the first pattern comprises: forming a plurality of marks on the touch screen by a laser having a width of 1 to 100 μm by laserizing the substrate and the conductive layer. The first graphic.
The method according to claim 13 , wherein the conductive layer comprises a thin film of a metal having a nanometer dimension, a carbon nanotube film, a graphene film, an organic conductive polymer film, an ITO film, or any combination thereof.
The method according to claim 13, wherein the conductive layer comprises a nanosilver film.
The touch screen module according to any one of claims 11 to 15, wherein each of the second patterns is different in shape from the corresponding first pattern and the positions match each other.
The touch screen module according to any one of claims 11 to 15, wherein the positions of the second patterns and the first patterns do not match each other.
A touch screen module according to any one of claims 11 to 15, wherein the width is between 10 and 40 microns.
A touch screen module according to any of claims 11 to 15, wherein the width is between 25 and 35 microns.
The touch screen module according to any one of claims 12 to 15, wherein the substrate has a thickness of between 0.015 and 0.2 mm.