CN211015461U - Superfine wire capacitive touch screen laminated structure and capacitive touch screen - Google Patents

Abstract

An ultra-fine wire capacitive touch screen lamination structure, comprising: a first film serving as a first print carrier; the first transparent adhesive layer is arranged on the upper surface of the first film; the first lead layer is fixed on the upper surface of the first transparent adhesive layer and is used for connecting the flexible circuit board; a second film serving as a second print carrier; the second transparent adhesive layer is arranged on the upper surface of the second film; the second lead layer is fixed on the upper surface of the second transparent adhesive layer and is connected with the flexible circuit board; the second lead layer is attached to the first film. The utility model discloses an adopt first wire layer and second wire layer separately to carry out the structure of arranging, can let first wire layer and second wire layer separately print, compare in the structure that traditional first, second wire layer need successively print, print efficiency has improved about one time. In addition, the problem that the traditional two conductor layers are overlapped to cause incomplete lamination with the transparent adhesive layer is also avoided.

Description

Superfine wire capacitive touch screen laminated structure and capacitive touch screen

Technical Field

The utility model belongs to capacitive touch screen field, concretely relates to superfine wire capacitive touch screen laminated structure and capacitive touch screen.

Background

The superfine wire type capacitive touch screen belongs to an improved projection type capacitive touch screen, an indium tin oxide layer is replaced by a superfine wire layer, and the change of a signal is calculated through a high-precision measurement algorithm. The touch sensor without ito layer is one of the most important features distinguished from other projected capacitive touch panels. The capacitance sensing channel is completely composed of superfine conducting wires which are coated with insulating materials and have the diameters of several to ten and several microns, and is connected with the flexible circuit board through laser spot welding. The flexible circuit board is connected with the driving circuit board through the connector bayonet and touch control is achieved through the driving circuit board. The core component in the superfine wire type capacitive touch screen is a superfine wire type capacitive sensor which is formed by packaging two layers of superfine wires by two layers of films, wherein the two layers of superfine wires are positioned between the two layers of films to form a structure similar to a sandwich. The ultra-fine wires themselves have the insulation layer and are not conducted due to mutual touch.

The ultra-thin wire type capacitive sensor can support an ultra-large area of 180 inches, but the problem of production efficiency is also brought while user experience is increased. The most critical procedure for producing the ultra-fine conductor type capacitive sensor is the printing of the ultra-fine conductor. Since the diameter of the ultra-fine wire is small, printing and wiring require precise control of tension in order to prevent disconnection during printing, and printing can be performed only at a low speed. And the two layers of superfine wires need to be crossed, and usually, after only one layer of superfine wires is printed, the other layer of superfine wires is printed. These factors greatly limit the productivity of printing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an ultra-fine wire capacitive touch screen laminated structure, ultra-fine wire capacitive touch screen laminated structure's simple structure has solved in the production because structural problem leads to the problem that production efficiency is low. The utility model also provides a capacitive touch screen.

According to the utility model discloses superfine wire capacitive touch screen laminated structure of first aspect embodiment, include: a first film serving as a first print carrier; the first transparent adhesive layer is arranged on the upper surface of the first film; the first lead layer is fixed on the upper surface of the first transparent adhesive layer and is used for connecting a flexible circuit board; a second film serving as a second print carrier; the second transparent adhesive layer is arranged on the upper surface of the second film; the second lead layer is fixed on the upper surface of the second transparent adhesive layer and is connected with the flexible circuit board; the second lead layer is attached to the first film.

According to the utility model discloses superfine wire capacitive touch screen laminated structure has following technological effect at least: through adopting first wire layer and second wire layer separately to carry out the structure of arranging, no longer adopt the structure that first wire layer and second wire layer overlapped and arranged, can let first wire layer and second wire layer separately print, set up first transparent adhesive layer and second transparent adhesive layer respectively on first wire layer and the second wire layer simultaneously and can guarantee that the emergence that can not be easy when separately printing shifts, avoid when using at last because take place the displacement and lead to touch control's precision decline or break down. After the two are printed separately, all the processes can be completed only by attaching. Compared with the traditional structure which needs to print the first lead layer and the second lead layer sequentially, the printing efficiency of the structure adopting the embodiment is improved by about one time. When the traditional structure is adopted for printing, the first lead layer and the second lead layer are overlapped, so that the requirement on the thickness of the transparent adhesive layer covered on the film is higher, and incomplete sticking is easily caused if the film is too thin. By adopting the method of the embodiment, only one lead layer is required to be printed on one transparent adhesive layer, so that the problem of incomplete bonding can be effectively avoided.

According to some embodiments of the invention, a third transparent glue layer is arranged between the second conductor layer and the first film.

According to some embodiments of the present invention, a fourth transparent adhesive layer is further disposed above the first conductive line layer.

According to some embodiments of the present invention, a third film is further disposed above the fourth transparent adhesive layer.

According to some embodiments of the invention, the ultra-fine conductive lines in the first conductive line layer and the ultra-fine conductive lines in the second conductive line layer are arranged perpendicular to each other.

According to the utility model discloses capacitive touch screen of second aspect embodiment, including apron, flexible line way board and foretell superfine wire capacitive touch screen laminated structure; the cover plate is attached to the upper side of the laminated structure of the superfine wire capacitive touch screen through a fifth transparent adhesive layer; the flexible circuit board is connected with the laminated structure of the superfine lead capacitive touch screen.

According to the utility model discloses capacitive touch screen has following technological effect at least: through adopting foretell superfine wire capacitive touch screen laminated structure, can effectual improvement capacitive touch screen's production efficiency, increase the apron simultaneously and can protect superfine wire capacitive touch screen laminated structure, the adoption of flexible line way board can convenience of customers test and later maintenance, maintenance.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a layered structure according to an embodiment of the first aspect of the present invention;

fig. 2 is a schematic view of a first conductive line layer structure according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a second conductive line layer structure according to an embodiment of the first aspect of the present invention.

Reference numerals:

a first film 110, a first transparent adhesive layer 120, a first conductive wire layer 130,

A second film 210, a second transparent adhesive layer 220, a second conductive wire layer 230,

A third transparent adhesive layer 300,

A cover plate 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third, fourth, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The following describes a stacked structure of an ultra-thin wire capacitive touch screen according to an embodiment of the first aspect of the present invention with reference to fig. 1 to 3.

According to the utility model discloses superfine wire capacitive touch screen laminated structure, include: the first film 110, the first transparent adhesive layer 120, the first conductive line layer 130, the second film 210, the second transparent adhesive layer 220, and the second conductive line layer 230. A first film 110 serving as a first print carrier; a first transparent adhesive layer 120 disposed on the upper surface of the first film 110; a first conductive wire layer 130 fixed on the upper surface of the first transparent adhesive layer 120 for connecting a flexible circuit board; a second film 210 serving as a second print carrier; a second transparent adhesive layer 220 disposed on the upper surface of the second film 210; the second lead layer 230 is fixed on the upper surface of the second transparent adhesive layer 220 and connected with the flexible circuit board; the second conductive line layer 230 is attached to the first film 110.

Referring to fig. 1 to 3, the first conductive line layer 130 is fixed on the first film 110 through the first transparent adhesive layer 120, so that the first conductive line layer 130 is not peeled off, and the printing can be performed separately. The second wire layer 230 is fixed on the first film 110 through the second transparent adhesive layer 220, so that the second wire layer 230 can not fall off, and meanwhile, the printing can be independently performed. Because first and second conductor layers 130 and 230 are distinguished from the conventional direct overlap configuration, a separate printing basis is shown. After the first wire layer 130 and the second wire layer 230 are printed, the entire ultra-fine wire capacitive touch screen laminated structure can be manufactured only by attaching the second wire layer 230 to the first film 110. In actual production, the ultra-fine wire usually adopts an ultra-fine copper wire, or an ultra-fine silver wire, an ultra-fine gold wire, an ultra-fine aluminum wire, an ultra-fine tin wire and the like are used according to the requirements of a use scene.

According to the utility model discloses superfine wire capacitive touch screen laminated structure, through adopting first wire layer and the separately mechanism of arranging of second wire layer, no longer adopt the structure that first wire layer and second wire layer overlapped and arrange, can let first wire layer and second wire layer separately print, it can guarantee that can not easy emergence when separately printing to have set up first transparent adhesive layer and second transparent adhesive layer respectively on first wire layer and the second wire layer simultaneously shifts, avoid when using at last because take place the displacement and lead to touch control's precision decline or break down. After the two are printed separately, all the processes can be completed only by attaching. Compared with the traditional structure which needs to print the first lead layer and the second lead layer sequentially, the printing efficiency of the structure adopting the embodiment is improved by about one time. When the traditional structure is adopted for printing, the first lead layer and the second lead layer are overlapped, so that the requirement on the thickness of the transparent adhesive layer covered on the film is higher, and incomplete sticking is easily caused if the film is too thin. By adopting the method of the embodiment, only one lead layer is required to be printed on one transparent adhesive layer, so that the problem of incomplete bonding can be effectively avoided.

In some embodiments of the present invention, referring to fig. 1, a third transparent adhesive layer 300 is disposed between the second wire layer 230 and the first film 110. The third transparent adhesive layer 300 can effectively improve the bonding strength between the second conductive line layer 230 and the first film 110, so that the overall structure is more stable.

In some embodiments of the present invention, a fourth transparent adhesive layer (not shown) is further disposed above the first conductive line layer 130. The fourth transparent adhesive layer is disposed to further reduce the damage of the first conductive line layer 130. And simultaneously, the subsequent bonding strength with the glass cover plate 400 can be improved.

In some embodiments of the present invention, a third film is further disposed above the fourth transparent adhesive layer. The addition of the third film may provide more complete protection to the ultra-fine conductive lines before the cover plate 400 is not installed, without increasing the cost.

In some embodiments of the present invention, referring to fig. 2 and 3, the ultra-fine conductive lines in the first conductive line layer 130 and the ultra-fine conductive lines in the second conductive line layer 230 are arranged perpendicular to each other. The mutually vertical arrangement can effectively improve the utilization rate of the superfine wires.

According to the second aspect of the present invention, a capacitive touch screen includes a cover plate 400, a flexible printed circuit board and the above-mentioned ultra-fine conductive line capacitive touch screen laminated structure; the cover plate 400 is attached to the upper side of the stacked structure of the ultra-fine wire capacitive touch screen through a fifth transparent adhesive layer (not shown in the figure); the flexible circuit board is connected with the laminated structure of the superfine lead capacitive touch screen. The laminated structure of the superfine conducting wire capacitive touch screen is connected with an external driving chip through a flexible circuit board, so that the capacitance change of the laminated structure of the superfine conducting wire capacitive touch screen is detected, and further touch control is realized.

According to the utility model discloses a capacitive touch screen, through adopting foretell superfine wire capacitive touch screen laminated structure, production efficiency that can effectual improvement capacitive touch screen increases apron 400 simultaneously and can protect superfine wire capacitive touch screen laminated structure, and flexible line way board's adoption can convenience of customers test and later maintenance, maintenance.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (6)

1. The utility model provides a superfine wire capacitive touch screen laminated structure which characterized in that includes:

a first film (110) serving as a first print carrier;

the first transparent adhesive layer (120) is arranged on the upper surface of the first film (110);

the first lead layer (130) is fixed on the upper surface of the first transparent adhesive layer (120) and is used for connecting a flexible circuit board;

a second film (210) serving as a second print carrier;

the second transparent adhesive layer (220) is arranged on the upper surface of the second film (210);

the second lead layer (230) is fixed on the upper surface of the second transparent adhesive layer (220) and is connected with the flexible circuit board; the second wire layer (230) is attached to the first film (110).

2. The ultra fine wire capacitive touch screen stack structure according to claim 1, wherein a third transparent adhesive layer (300) is disposed between the second wire layer (230) and the first film (110).

3. The ultra-fine conductor capacitive touch screen laminated structure as claimed in claim 1, wherein a fourth transparent adhesive layer is further disposed above the first conductor layer (130).

4. The ultra-fine wire capacitive touch screen laminated structure as claimed in claim 3, wherein a third film is further disposed above the fourth transparent adhesive layer.

5. The ultra fine wire capacitive touch screen stack structure of claim 1, wherein the ultra fine wires in the first wire layer (130) and the ultra fine wires in the second wire layer (230) are arranged perpendicular to each other.

6. A capacitive touch screen, comprising a cover plate (400), a flexible circuit board and the ultra-fine conductive capacitive touch screen laminated structure of any one of claims 1 to 5; the cover plate (400) is attached to the upper side of the laminated structure of the superfine lead capacitive touch screen through a fifth transparent adhesive layer; the flexible circuit board is connected with the laminated structure of the superfine lead capacitive touch screen.

Images