CN117519500A - Capacitive touch screen structure, manufacturing method thereof, capacitive touch screen and touch equipment - Google Patents

Abstract

The invention provides a capacitive touch screen structure, a manufacturing method thereof, a capacitive touch screen and touch equipment. The first substrate layer comprises a first substrate body part and a first substrate extension part extending from the first substrate body part, the first adhesive layer is arranged on the first substrate layer, the first adhesive layer comprises a first adhesive layer body part and a first adhesive layer extension part extending from the first adhesive layer body part, the first conductive layer is arranged on the first adhesive layer, and the first conductive layer comprises a first conductive body part and a first conductive extension part extending from the first conductive body part; the second adhesive layer is arranged on the first conductive body part, and the cover plate is arranged on the second adhesive layer. The invention effectively avoids the dependence of the capacitive touch screen on the flexible printed circuit board, improves the reliability of the capacitive touch screen product and reduces the cost of the capacitive touch screen product.

Description

Capacitive touch screen structure, manufacturing method thereof, capacitive touch screen and touch equipment

Technical Field

The invention relates to the technical field of touch screens, in particular to a capacitive touch screen structure, a manufacturing method thereof, a capacitive touch screen and touch equipment.

Background

Currently, conventional capacitive touch screen edge channel traces typically need to be connected to an FPC (Flexible Printed Circuit, flexible printed circuit board) by a bonding process, and then can be connected to an IC (Integrated Circuit ) control board by the FPC. As shown in fig. 15, the capacitive touch screen disposed on the left side can be connected to other circuits through the first and second flexible printed circuit boards 10 and 20, for example, to an IC control board through the first and second flexible printed circuit boards 10 and 20. Through FPC and IC control panel connection, need purchase FPC alone and must carry out FPC and bind the process, have great influence to capacitive touch screen product production yield, increased capacitive touch screen product's cost moreover.

Disclosure of Invention

In order to solve the problems that the yield of a capacitive touch screen is greatly influenced and the cost is high due to the fact that the conventional technology depends on an FPC, the capacitive touch screen structure, the manufacturing method thereof, the capacitive touch screen and the touch equipment can be provided, and the yield of products is improved and the cost is reduced in a mode of omitting the FPC.

To achieve the above technical object, the present invention provides a capacitive touch screen structure, including: the first substrate layer comprises a first substrate body part and a first substrate extension part extending from the first substrate body part, and the first substrate body part and the first substrate extension part are integrally formed; the first adhesive layer is arranged on the first substrate layer; the first adhesive layer comprises a first adhesive layer body part and a first adhesive layer extending part extending from the first adhesive layer body part, and the first adhesive layer body part and the first adhesive layer extending part are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part; the first conductive layer is arranged on the first adhesive layer; the first conductive layer comprises a first conductive body part and a first conductive extension part extending from the first conductive body part, and the first conductive body part and the first conductive extension part are integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part; the second adhesive layer is arranged on the first conductive body part; and the cover plate is arranged on the second adhesive layer. Compared with the conventional technology, the integrated capacitive touch screen structure provided by the technical scheme of the invention has the advantages that the traditional FPC structure is replaced by the first substrate extension part, the first adhesive layer extension part and the first conductive extension part to realize connection with other circuits, so that the problems that the production yield of the capacitive touch screen is greatly influenced and the cost of a capacitive touch screen product is increased due to the dependence on the FPC are effectively avoided, the reliability of the capacitive touch screen structure is improved, and the cost of the capacitive touch screen product is reduced.

In at least one embodiment of the present invention, the surface of the first adhesive layer has a plurality of first strip-shaped grooves; the first strip-shaped groove extends from the first adhesive layer body part to the first adhesive layer extending part; the first strip-shaped groove is internally provided with first conductive wires, and all the first conductive wires form a first conductive layer. According to the embodiment of the invention, the first conductive wire is formed in the first strip-shaped groove, so that the first conductive layer is formed, the structure is beneficial to protecting the conductive layer, the reliability of the first conductive layer is improved, and the reliability of the connecting structure of the capacitive touch screen is further improved.

In at least one embodiment of the present invention, the first conductive line is a first metal paste line, and the first metal paste line is filled in the first strip-shaped groove. Based on the first metal paste line, the embodiment of the invention is beneficial to improving the bending resistance of the first conductive layer.

In at least one embodiment of the present invention, the first substrate extension portion, the first adhesive layer extension portion, and the first conductive extension portion are used for forming a first bending structure, and a first protection layer is disposed on the first bending structure; the first protective layer and the first adhesive layer extending part are respectively positioned at two sides of the first conductive extending part. Based on the improved technical scheme, the first conductive extension part in the first bending structure can be effectively protected by the first protection layer, the risk of cracking or even breaking the first conductive extension part in the bending state is effectively reduced, the reliability of the connecting structure for the capacitive touch screen is improved, and the purposes of further improving the structural reliability of the capacitive touch screen and the like are achieved.

The capacitive touch screen structure in at least one embodiment of the present invention further includes a first reinforcing layer disposed on the first substrate extension; the first reinforcing layer and the first adhesive layer are respectively positioned at two sides of the first substrate extension part. Based on the stiffening layer, the reliability of the connection structure of the invention can be further improved.

In at least one embodiment of the present invention, the first conductive extension has a connection region, and a first metal layer is disposed on the connection region, and the first metal layer is connected to the first conductive extension. The first metal layer of the embodiment is beneficial to the connection of the first conductive extension part with other circuits, and improves the reliability of circuit connection.

The first adhesive layer of at least one embodiment of the invention is an ultraviolet light curing adhesive layer, and the second adhesive layer is an optical adhesive layer.

The capacitive touch screen structure in at least one embodiment of the present invention further includes: the second substrate layer comprises a second substrate body part and a second substrate extension part extending from the second substrate body part, and the second substrate body part and the second substrate extension part are integrally formed; the third adhesive layer is arranged on the second substrate layer; the third adhesive layer comprises a third adhesive layer body part and a third adhesive layer extending part extending from the third adhesive layer body part, and the third adhesive layer body part and the third adhesive layer extending part are integrally formed; the third adhesive layer body part is arranged on the second substrate body part, and the third adhesive layer extension part is arranged on the second substrate extension part; the second conductive layer is arranged on the third adhesive layer; the second conductive layer comprises a second conductive body part and a second conductive extension part extending from the second conductive body part, and the second conductive body part and the second conductive extension part are integrally formed; the second conductive body part is arranged on the third adhesive layer body part, and the second conductive extension part is arranged on the third adhesive layer extension part; the fourth adhesive layer is arranged on the second conductive body part; the fourth adhesive layer bonds the first substrate layer and the second conductive layer. Based on the improved technical scheme, the FPC structure used by the capacitive touch screen can be replaced completely, so that the problems of dependence on FPC and the like in the conventional technology are thoroughly avoided; for example, the embodiment of the invention can form the sensing surface pattern layer and the driving surface pattern layer for the capacitive touch screen at the same time, so as to provide a driving circuit and a sensing circuit for the capacitive touch screen.

In at least one embodiment of the present invention, the second substrate layer has the same structure as the first substrate layer; the third adhesive layer has the same structure as the first adhesive layer; the second conductive layer has the same structure as the first conductive layer; the fourth adhesive layer and the second adhesive layer have the same structure.

To achieve the above technical object, the present invention also provides a capacitive touch screen including the capacitive touch screen structure in any one of the embodiments of the present invention.

In order to achieve the above technical purpose, the present invention further provides a touch device, which includes the capacitive touch screen in any embodiment of the present invention or the capacitive touch screen structure in any embodiment of the present invention.

In order to achieve the technical purpose, the invention also provides a manufacturing method of the capacitive touch screen structure, which comprises the following steps: forming a first substrate layer; the first substrate layer comprises a first substrate body part and a first substrate extension part extending from the first substrate body part, and the first substrate body part and the first substrate extension part are integrally formed; coating a first adhesive layer on the first substrate layer; the first adhesive layer comprises a first adhesive layer body part and a first adhesive layer extending part extending from the first adhesive layer body part, and the first adhesive layer body part and the first adhesive layer extending part are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part; forming a first conductive layer on the first adhesive layer; the first conductive layer comprises a first conductive body part and a first conductive extension part extending from the first conductive body part, and the first conductive body part and the first conductive extension part are integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part; coating a second adhesive layer on the first conductive body part; and a cover plate is arranged on the second adhesive layer. Compared with the conventional scheme, the embodiment of the invention replaces FPC by the first substrate extension part, the first adhesive layer extension part and the first conductive extension part to realize connection with other circuits, so that the problems that the production yield of the capacitive touch screen is greatly influenced and the cost of a capacitive touch screen product is increased due to the dependence on the FPC are effectively avoided, the structural reliability of the capacitive touch screen is improved, and the product cost is reduced.

In at least one embodiment of the present invention, forming the first conductive layer on the first adhesive layer may include: rolling the first adhesive layer by utilizing a roller with convex teeth so as to form a plurality of first strip-shaped grooves on the first adhesive layer; the first strip-shaped groove extends from the first adhesive layer body part to the first adhesive layer extending part; first conductive lines are formed in the respective first stripe-shaped grooves to form a first conductive layer through all the conductive lines. Based on the technical scheme that the first strip-shaped groove is formed through roller rolling, the processing efficiency of the capacitive touch screen structure can be obviously improved, and the first conductive layer with higher reliability can be formed.

In at least one embodiment of the present invention, forming a first conductive line in each first stripe-shaped groove includes: scraping metal paste into each first strip-shaped groove through a scraper, and filling the first strip-shaped grooves with the metal paste; the metal paste in the first strip-shaped groove is solidified to be used as a first conductive wire through the first metal paste wire formed in the first strip-shaped groove. According to the embodiment of the invention, the first conductive wire can be protected by filling the metal paste into the groove, so that the thickness of the first conductive wire can be increased, and the reliability of the circuit can be further improved.

The manufacturing method of the capacitive touch screen structure in at least one embodiment of the present invention further includes: coating a first protection layer on the first conductive extension part; the first protective layer and the first adhesive layer extending part are respectively positioned at two sides of the first conductive extending part. According to the embodiment of the invention, the first conductive extension part in the first bending structure can be effectively protected by utilizing the first protective layer, the risk of cracking or even breaking the first conductive extension part in the bending state is effectively reduced, the reliability of the connecting structure for the capacitive touch screen is improved, and the purposes of further improving the structural reliability of the capacitive touch screen and the like are realized.

In at least one embodiment of the present invention, before the cover plate is disposed on the second adhesive layer, the method further includes: forming a second substrate layer, coating a third adhesive layer on the second substrate layer, forming a first conductive layer on the third adhesive layer, coating a fourth adhesive layer on the second conductive layer, and bonding the first substrate layer and the second conductive layer through the fourth adhesive layer; the second substrate layer and the first substrate layer are identical in structure, the third adhesive layer and the first adhesive layer are identical in structure, the second conductive layer and the first conductive layer are identical in structure, and the fourth adhesive layer and the second adhesive layer are identical in structure. Based on the improved technical scheme, the FPC structure used by the capacitive touch screen can be replaced completely, so that the problems of dependence on FPC and the like in the conventional technology are thoroughly avoided; for example, the embodiment of the invention can form the sensing surface pattern layer and the driving surface pattern layer for the capacitive touch screen at the same time, so as to provide a driving circuit and a sensing circuit for the capacitive touch screen.

Drawings

FIG. 1 illustrates a schematic side cross-sectional view of a capacitive touch screen in accordance with one or more embodiments of the invention.

FIG. 2 is a schematic cross-sectional view of a plurality of first grooves formed on a surface of a first adhesive layer according to one or more embodiments of the present invention.

Fig. 3 shows a schematic structural view of a side cross-section of a first flexure mechanism in one or more embodiments of the invention.

FIG. 4 shows a schematic representation of a first substrate layer coated with a first subbing layer in accordance with one or more embodiments of the present invention.

Fig. 5 illustrates a schematic diagram of rolling a first glue layer using a roller with teeth in one or more embodiments of the invention.

Fig. 6 is a schematic diagram illustrating forming a plurality of first stripe-shaped grooves on a first glue layer in one or more embodiments of the present invention.

Fig. 7 shows a schematic view of metal paste scraped into a first bar-shaped groove by a scraper in one or more embodiments of the invention.

Fig. 8 shows a schematic view of a first conductive line formed by a first metal paste line in a first bar-shaped groove in one or more embodiments of the present invention.

FIG. 9 is a schematic cross-sectional view of a first bending zone coated with a first protective layer alone in one or more embodiments of the invention.

FIG. 10 is a schematic side cross-sectional view of a first bending zone coated with a first protective layer alone in one or more embodiments of the invention.

FIG. 11 is a schematic diagram illustrating determining a region to be cut out when forming a touch screen external connection structure in one or more embodiments of the present invention.

Fig. 12 shows a schematic side cross-sectional structure of a first stiffening layer and a first metal layer in one or more embodiments of the invention.

FIG. 13 illustrates a schematic side cross-sectional view of another capacitive touch screen in accordance with one or more embodiments of the invention.

FIG. 14 is a schematic diagram showing the overall structure of an integrated capacitive touch screen in accordance with one or more embodiments of the present invention.

Fig. 15 shows a schematic diagram of a conventional capacitive touch screen implementing circuit connections based on a flexible printed circuit board.

In the drawing the view of the figure,

100. a first substrate layer; 200. a first adhesive layer; 300. a first conductive layer; 400. a second adhesive layer; 500. a cover plate; 600. a first protective layer; 700. a first reinforcing layer; 800. a first metal layer;

201. a first bar-shaped groove; 202. a roller; 203. a scraper; 601. a first bending structure; 602. a cut-out area;

110. a second substrate layer; 210. a third adhesive layer; 310. a second conductive layer; 410. a fourth adhesive layer; 610. a second protective layer; 710. a second reinforcing layer; 810. a second metal layer;

900. An electrode pattern layer; 901. a wiring area;

10. a first flexible printed circuit board; 20. and a second flexible printed circuit board.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.

Various structural schematic diagrams according to embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and relative sizes, positional relationships between them shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required. In the context of embodiments of the present invention, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present therebetween. In addition, if one layer/element is located "on" another layer/element in one orientation, that layer/element may be located "under" the other layer/element when the orientation is turned.

In contrast to the conventional scheme in which the FPC is bonded to the circuit and then connected to the IC control board, one or more embodiments of the present invention provide a capacitive touch screen structure including, but not limited to, a first substrate layer, a first adhesive layer, a first conductive layer, a second adhesive layer, and a cover plate. The first substrate layer comprises a first substrate body part and a first substrate extension part extending from the first substrate body part, and the first substrate body part and the first substrate extension part are integrally formed; the first adhesive layer is arranged on the first substrate layer; the first adhesive layer comprises a first adhesive layer body part and a first adhesive layer extending part extending from the first adhesive layer body part, and the first adhesive layer body part and the first adhesive layer extending part are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part; the first conductive layer is arranged on the first adhesive layer; the first conductive layer comprises a first conductive body part and a first conductive extension part extending from the first conductive body part, and the first conductive body part and the first conductive extension part are integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part; the second adhesive layer is arranged on the first conductive body part; the cover plate is arranged on the second adhesive layer.

Compared with the traditional FPC scheme, the embodiment of the invention provides an integrated capacitive touch screen structure, and the traditional flexible printed circuit board structure is replaced by the first substrate extension part, the first adhesive layer extension part and the first conductive extension part to realize connection with other circuits (such as an IC control board).

As shown in fig. 1, at least one embodiment of the present invention can provide a capacitive touch screen structure, which may include, but is not limited to, a first substrate layer 100, a first adhesive layer 200, a first conductive layer 300, a second adhesive layer 400, and a cover plate 500.

The first substrate layer 100 includes a first substrate body portion and a first substrate extension portion extending from the first substrate body portion, the first substrate body portion and the first substrate extension portion being integrally formed; the first substrate layer 100 may be, for example, a PET (Polyethylene terephthalate ) material layer. The invention has the advantages of high stability, good insulativity and the like based on the polyethylene terephthalate material layer, and improves the reliability of connection between the capacitive touch screen and the IC control board.

The first adhesive layer 200 is disposed on the first substrate layer 100; the first adhesive layer 200 includes a first adhesive layer body portion and a first adhesive layer extension portion extending from the first adhesive layer body portion, and the first adhesive layer body portion and the first adhesive layer extension portion are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part. The first adhesive layer 200 in the embodiment of the present invention is an Ultraviolet light curing (UV) adhesive layer.

As shown in fig. 2, and in combination with fig. 8, in at least one embodiment of the present invention, the surface of the first adhesive layer 200 has a plurality of first strip-shaped grooves 201, and the first strip-shaped grooves 201 extend from the first adhesive layer body portion to the first adhesive layer extension portion; first conductive wires are arranged in the first strip-shaped groove 201, and all the first conductive wires form a first conductive layer 300; the first conductive line in at least one embodiment of the present invention may be, for example, a silver line or a copper line, or the like. According to the embodiment, the first conductive wire is formed in the first strip-shaped groove, so that the first conductive layer is formed, the structure is favorable for protecting the conductive layer, the reliability of the conductive layer is improved, and the reliability of the connecting structure of the capacitive touch screen is improved.

The first conductive layer 300 is disposed on the first adhesive layer 200, where the first conductive layer 300 includes a first conductive body portion and a first conductive extension portion extending from the first conductive body portion, and the first conductive body portion and the first conductive extension portion are integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part.

In an alternative embodiment of the present invention, the first conductive line is a first metal paste line, and the first metal paste line is filled in the first stripe-shaped groove 201. Based on the first metal paste line, the embodiment of the invention is beneficial to improving the bending resistance of the first conductive layer.

The second adhesive layer 400 is disposed on the first conductive body portion, and the second adhesive layer 400 in at least one embodiment of the present invention is an optical (OCA, optically Clear Adhesive) adhesive layer.

The cover plate 500 is disposed on the second adhesive layer 400.

As shown in fig. 3, at least one embodiment of the present invention provides an improved capacitive touch screen structure, specifically, a first substrate extension portion, a first adhesive layer extension portion, and a first conductive extension portion are used to form a first bending structure 601, for example, a bending portion shown in fig. 3, where a first protection layer 600 is disposed on the first bending structure 601; the first protection layer 600 and the first adhesive layer extension portion are respectively located at two sides of the first conductive extension portion, where the first protection layer is an ultraviolet light cured adhesive layer. The first conductive extension part in the range of the first bending structure 601 is easily affected by internal tension, and the first conductive extension part with an outward bending trend can be blocked by the first protection layer in this embodiment, that is, the first conductive extension part in the first bending structure is effectively protected by the first protection layer, so that the risk that the first conductive extension part in the bending state is cracked or even broken due to the internal tension is effectively reduced, the reliability of the connection structure for the capacitive touch screen is obviously improved, and the purposes of further improving the structural reliability of the capacitive touch screen and the like are achieved.

As shown in fig. 1 and 12, the capacitive touch screen structure in an alternative embodiment of the present invention further includes a first reinforcing layer 700, where the first reinforcing layer 700 is disposed on the first substrate extension portion, specifically, the first reinforcing layer 700 and the first adhesive layer 200 are respectively located on two sides of the first substrate extension portion. The first reinforcing layer 700 in the embodiment of the invention is arranged at the tail end of the extension part of the first substrate, so as to help to improve the reliability of the connection structure of the capacitive touch screen; optionally, the first stiffening layer 700 may be set as a difference between the gauge thickness of the connector fitting and the thickness of the first substrate layer, so that the total thickness of the connection structure is better adapted to the connector, to further improve the reliability and stability of the connection between the leads and the IC control board.

In an alternative embodiment of the present invention, the first conductive extension has a connection region on which the first metal layer 800 is disposed, and the first metal layer 800 is connected to the first conductive extension to form a metal pad for connecting to other circuits (e.g., an IC control board). The first metal layer in at least one embodiment of the present invention facilitates connection of the first conductive extension to other circuits, improving circuit connection reliability.

The capacitive touch screen structure in one or more embodiments of the present invention may further include a second substrate layer 110, a third adhesive layer 210, a second conductive layer 310, and a fourth adhesive layer 410, where the second substrate layer 110 includes a second substrate body portion and a second substrate extension portion extending from the second substrate body portion, and the second substrate body portion and the second substrate extension portion are integrally formed, and the second substrate layer 110 is, for example, a PET (Polyethylene terephthalate ) material layer. A third adhesive layer 210 disposed on the second substrate layer 110; the third adhesive layer 210 includes a third adhesive layer body portion and a third adhesive layer extending portion extending from the third adhesive layer body portion, and the third adhesive layer body portion and the third adhesive layer extending portion are integrally formed; the third adhesive layer body part is arranged on the second substrate body part, and the third adhesive layer extension part is arranged on the second substrate extension part. The second conductive layer 310 is disposed on the third adhesive layer 210; the second conductive layer 310 includes a second conductive body portion and a second conductive extension portion extending from the second conductive body portion, and the second conductive body portion and the second conductive extension portion are integrally formed; the second conductive body part is arranged on the third adhesive layer body part, and the second conductive extension part is arranged on the third adhesive layer extension part; a fourth adhesive layer 410 disposed on the second conductive body portion; the fourth adhesive layer 410 adheres the first substrate layer 100 and the second conductive layer 310.

As shown in fig. 13, in an alternative embodiment of the present invention, the second substrate layer 110 has the same structure as the first substrate layer 100, the third adhesive layer 210 has the same structure as the first adhesive layer 200, and the surface of the third adhesive layer 210 has a plurality of second strip-shaped grooves, and the second strip-shaped grooves extend from the third adhesive layer body portion to the third adhesive layer extension portion. The second conductive layer 310 has the same structure as the first conductive layer 300. Second conductive lines are disposed in the second bar-shaped grooves, and all of the second conductive lines form a second conductive layer 310. The second conductive wire is a second metal paste wire, and the second metal paste wire is filled in the second strip-shaped groove. The fourth glue layer 410 is identical to the second glue layer 400 in structure. The second substrate extension portion, the second adhesive layer 400 extension portion, and the second conductive extension portion are used for forming a second bending structure, and the second bending structure is provided with a second protection layer 610; the second protective layer 610 and the extension portion of the second adhesive layer 400 are respectively located at two sides of the second conductive extension portion. A second stiffening layer 710 disposed on the second substrate extension; the second reinforcing layer 710 and the second adhesive layer 400 are respectively located at two sides of the second substrate extension portion. The second conductive extension has a connection region, on which a second metal layer 810 is disposed, and the second metal layer 810 is connected to the second conductive extension. The third is an ultraviolet light curing glue layer, and the fourth glue layer 410 is an optical glue layer.

As shown in fig. 4, at least one embodiment of the present invention can also provide a method for manufacturing a capacitive touch screen structure based on the same inventive concept as the capacitive touch screen structure, for forming the capacitive touch screen structure provided by the embodiment of the present invention, which can include, but is not limited to, the following processes.

First, a first substrate layer 100 is formed, for example, a first substrate layer is formed on a semiconductor substrate, and then the semiconductor substrate is removed, and the specific implementation process can be selected according to needs, so that no further description is given; the first substrate layer 100 includes a first substrate body portion and a first substrate extension portion extending from the first substrate body portion, and the first substrate body portion and the first substrate extension portion are integrally formed, and in this embodiment, the first substrate layer is a PET material layer.

Next, a first adhesive layer 200 is coated on the first substrate layer 100, where the first adhesive layer 200 is, for example, an ultraviolet light cured adhesive layer, for example, the first adhesive layer 200 is coated on the upper surface of the first substrate layer 100. The first adhesive layer 200 includes a first adhesive layer body portion and a first adhesive layer extension portion extending from the first adhesive layer body portion, and the first adhesive layer body portion and the first adhesive layer extension portion are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part.

Again, a first conductive layer 300 is formed on the first adhesive layer 200; the first conductive layer 300 includes a first conductive body portion and a first conductive extension portion extending from the first conductive body portion, and the first conductive body portion and the first conductive extension portion are integrally formed.

The first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part.

As shown in fig. 5 and 6, in an embodiment of the present invention, forming a first conductive layer 300 on the first adhesive layer 200 includes: based on the embossing technique, the present embodiment rolls the first adhesive layer 200 by using a roller 202 with convex teeth to form a plurality of first strip-shaped grooves 201 on the first adhesive layer 200; the embodiment selects or designs a corresponding roller with convex teeth based on the conductive layer pattern to be formed and a circuit, and is used for rolling the UV adhesive surface, and performing heating, curing and demolding while rolling, wherein the process is automatically completed by processing equipment, so that the obtained first strip-shaped groove corresponds to the first conductive layer pattern; the first strip-shaped groove 201 extends from the first adhesive layer body portion to the first adhesive layer extending portion; first conductive lines are formed in the respective first stripe-shaped grooves 201 to form the first conductive layer 300 through all the conductive lines.

As shown in fig. 7, in the embodiment of the present invention, forming the first conductive line in each first stripe-shaped groove 201 includes: the metal paste is scraped into each of the first strip-shaped grooves 201 by the doctor blade 203, and the metal paste fills the first strip-shaped grooves 201. The metal paste in the embodiment of the invention is, for example, silver paste or copper paste with good ductility, so as to realize the formation of the high-reliability conductive wire; the silver paste with good ductility is formed by mixing metal silver, an adhesive, a solvent and an auxiliary agent, the adhesive force and elasticity among silver particles are strong, and the bending resistance of the circuit is improved, so that the risk of cracking the silver wire in a bending state can be greatly reduced.

As shown in fig. 8, the metal paste, for example, the filled silver paste or copper paste, in the first bar-shaped groove 201 is cured to pass through the first metal paste line formed in the first bar-shaped groove 201 as the first conductive line.

Then, a second glue layer 400, such as a cured glue layer, is coated on the first conductive body portion.

As shown in fig. 9 and 10, the method for manufacturing a capacitive touch screen structure in at least one embodiment of the present invention further includes: after forming the first conductive layer pattern, coating a first protective layer 600 on the first conductive extension portion, specifically coating the first conductive extension portion within the first bending structure 601; the first protection layer 600 and the first adhesive layer extending portion are respectively located at two sides of the first conductive extending portion, and the first protection layer is, for example, an ultraviolet light curing adhesive layer. The present embodiment may be formed by plating a first metal layer 800 on a connection region of the first conductive extension portion (for example, a connection region with the IC control board), where the first metal layer 800 is connected to the first conductive extension portion, so as to better connect to the card pin on the connector, and thus, may connect to the IC control board. As shown in fig. 12, the first reinforcement layer 700 can also be disposed on the first substrate extension portion in this embodiment, so as to improve the reliability of the capacitive touch screen connection structure.

Finally, a cover plate 500 is disposed on the second adhesive layer 400.

As shown in fig. 13, the method for manufacturing a capacitive touch screen structure according to one or more embodiments of the present invention further includes, before disposing the cover plate 500 on the second adhesive layer 400: forming a second substrate layer 110, wherein the second substrate layer 110 is, for example, a PET material layer; coating a third adhesive layer 210 on the second substrate layer 110, forming a first conductive layer 300 on the third adhesive layer 210, coating a fourth adhesive layer 410 on the second conductive layer 310, and bonding the first substrate layer 100 and the second conductive layer 310 through the fourth adhesive layer 410; in this embodiment, the process of forming the second substrate layer 110 is the same as that of forming the first substrate layer 100, and the structure of the second substrate layer 110 is the same as that of the first substrate layer 100; the process of coating the third adhesive layer 210 is the same as that of the first adhesive layer 200, and the third adhesive layer 210 has the same structure as the first adhesive layer 200; the process of forming the second conductive layer 310 is the same as that of forming the first conductive layer 300, and the second conductive layer 310 has the same structure as the first conductive layer 300; the process of coating the fourth adhesive layer 410 is the same as that of coating the second adhesive layer 400, and the fourth adhesive layer 410 and the second adhesive layer 400 have the same structure; based on the detailed description of the manufacturing process and the result of the first substrate layer, the first adhesive layer, the first conductive layer and the second adhesive layer in this specification, the manufacturing process and the specific structure of the second substrate layer, the third adhesive layer, the second conductive layer and the fourth adhesive layer in this embodiment will not be described in detail.

Referring to fig. 13, after the second conductive layer pattern is formed in this embodiment, a second protective layer 610 is coated on the second conductive extension portion, specifically, the second conductive extension portion within the second bending structure; the second protective layer 610 and the second adhesive layer extending portion are respectively located at two sides of the second conductive extending portion, and the second protective layer is, for example, an ultraviolet light cured adhesive layer. The second metal layer 810 may be plated on the connection area of the second conductive extension (for example, the connection area with the IC control board), and the second metal layer 810 is connected with the second conductive extension, so as to better connect with the card pin on the connector, and further connect with the IC control board. The second stiffening layer 710 can also be disposed on the second substrate extension portion in this embodiment to improve the reliability of the capacitive touch screen connection structure.

As shown in fig. 11, after the first conductive layer pattern and the second conductive layer pattern are formed, the first conductive layer pattern and the second conductive layer pattern may be cut, that is, after the processing of each material layer is completed, the region 602, which is shown in fig. 11 and needs to be cut, is removed, so as to obtain a touch screen connection structure, which may be used for connection with an IC control board. Wherein the first conductive layer pattern of the present embodiment is used as a driving surface pattern (TX) layer and the second conductive layer pattern is used as a sensing surface pattern (RX) layer, or the first conductive layer pattern is used as a sensing surface pattern (RX) layer and the second conductive layer pattern is used as a driving surface pattern (TX) layer.

In summary, compared with the conventional manufacturing method of the capacitive touch screen structure, the manufacturing method of the capacitive touch screen structure can reduce the production procedures of the capacitive touch screen structure, quickly form the wiring and the patterns of the capacitive touch screen, replace FPC (flexible printed circuit) through the first substrate extension part, the first adhesive layer extension part and the first conductive extension part so as to realize connection with other circuits, and realize an integrated structure based on the imprinting technology in the whole manufacturing process of the capacitive touch screen structure.

As shown in fig. 14, one or more embodiments of the present invention can also provide a capacitive touch screen including the capacitive touch screen structure in any of the embodiments of the present invention, based on the same inventive concept as the capacitive touch screen structure. Fig. 14 shows an electrode pattern layer 900 and a routing area 901 included in a capacitive touch screen, where the electrode pattern layer 900 is used for detecting a touch signal, the routing area 901 is used for providing a space for accommodating a lead, and the lead may include a lead at an edge of a capacitive touch screen structure formed by a first substrate extension, a first adhesive layer extension and a first conductive extension related to the present invention, and a lead at an edge of the capacitive touch screen structure formed by a second substrate extension, a second adhesive layer 400 extension and a second conductive extension related to the present invention, and various embodiments related to the capacitive touch screen structure provided by the present invention are described in detail in the present specification and are not repeated herein. Capacitive touch screens in accordance with one or more embodiments of the present invention are, for example, organic Light-Emitting diodes (OLEDs), micro LEDs (Micro LEDs), minileds (sub-millimeter LEDs), and the like.

One or more embodiments of the present invention can also provide a touch device including the capacitive touch screen of any of the embodiments of the present invention or the capacitive touch screen structure of any of the embodiments of the present invention, based on the same inventive concept as the capacitive touch screen structure. The embodiments related to the specific structure of the integrated capacitive touch screen structure of the present invention are described in detail in the present specification, and are not described herein again. The touch device provided by the invention comprises, but is not limited to, the following categories: cell-phone, intelligent wrist-watch, panel computer, notebook computer, desktop display, TV set, digital camera, intelligent bracelet, intelligent glasses, on-vehicle display, medical equipment, industrial control equipment intelligent interaction panel and touch interactive terminal etc..

In the description of the present specification, a description referring to the terms "present embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means 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, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention, but any modifications, equivalents, and simple improvements made within the spirit of the present invention should be included in the scope of the present invention.

Claims (16)

1. A capacitive touch screen structure, comprising:

a first substrate layer (100) comprising a first substrate body portion and a first substrate extension extending from the first substrate body portion, the first substrate body portion being integrally formed with the first substrate extension;

A first glue layer (200) disposed on the first substrate layer (100); the first adhesive layer (200) comprises a first adhesive layer body part and a first adhesive layer extending part extending from the first adhesive layer body part, and the first adhesive layer body part and the first adhesive layer extending part are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part;

a first conductive layer (300) disposed on the first adhesive layer (200); the first conductive layer (300) comprises a first conductive body portion and a first conductive extension extending from the first conductive body portion, the first conductive body portion and the first conductive extension being integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part;

a second adhesive layer (400) disposed on the first conductive body portion;

and the cover plate (500) is arranged on the second adhesive layer (400).

2. The capacitive touch screen structure of claim 1, wherein,

the first adhesive layer (200) is provided with a plurality of first strip-shaped grooves (201) on the surface; the first strip-shaped groove (201) extends from the first adhesive layer body part to the first adhesive layer extending part;

First conductive wires are arranged in the first strip-shaped grooves (201), and all the first conductive wires form the first conductive layer (300).

3. The capacitive touch screen structure of claim 2, wherein,

the first conductive wire is a first metal paste wire, and the first metal paste wire is filled in the first strip-shaped groove (201).

4. The capacitive touch screen structure of claim 1, wherein,

the first substrate extension part, the first glue layer extension part and the first conductive extension part are used for forming a first bending structure (601), and a first protection layer (600) is arranged on the first bending structure (601);

the first protection layer (600) and the first adhesive layer extending part are respectively positioned at two sides of the first conductive extending part.

5. The capacitive touch screen structure of claim 1, further comprising:

a first stiffening layer (700) disposed on the first substrate extension; the first reinforcing layer (700) and the first adhesive layer (200) are respectively positioned at two sides of the first substrate extension part.

6. The capacitive touch screen structure of claim 1, wherein,

the first conductive extension has a connection region on which a first metal layer (800) is disposed, the first metal layer (800) being connected with the first conductive extension.

7. The capacitive touch screen structure of claim 1, wherein,

the first adhesive layer (200) is an ultraviolet light curing adhesive layer;

the second adhesive layer (400) is an optical adhesive layer.

8. The capacitive touch screen structure of any one of claims 1 to 7, further comprising:

a second substrate layer (110) comprising a second substrate body portion and a second substrate extension extending from the second substrate body portion, the second substrate body portion being integrally formed with the second substrate extension;

a third glue layer (210) disposed on the second substrate layer (110); the third adhesive layer (210) comprises a third adhesive layer body part and a third adhesive layer extending part extending from the third adhesive layer body part, and the third adhesive layer body part and the third adhesive layer extending part are integrally formed; the third adhesive layer body part is arranged on the second substrate body part, and the third adhesive layer extension part is arranged on the second substrate extension part;

a second conductive layer (310) disposed on the third adhesive layer (210); the second conductive layer (310) includes a second conductive body portion and a second conductive extension extending from the second conductive body portion, the second conductive body portion being integrally formed with the second conductive extension; the second conductive body part is arranged on the third adhesive layer body part, and the second conductive extension part is arranged on the third adhesive layer extension part;

A fourth glue layer (410) disposed on the second conductive body portion; the fourth glue layer (410) bonds the first substrate layer (100) and the second conductive layer (310).

9. The capacitive touch screen structure of claim 8, wherein,

the second substrate layer (110) is structurally identical to the first substrate layer (100);

the third adhesive layer (210) has the same structure as the first adhesive layer (200);

-the second conductive layer (310) is structurally identical to the first conductive layer (300);

the fourth adhesive layer (410) and the second adhesive layer (400) are identical in structure.

10. A capacitive touch screen comprising the capacitive touch screen structure of any one of claims 1 to 9.

11. A touch device comprising the capacitive touch screen of claim 10 or the capacitive touch screen structure of any of claims 1 to 9.

12. A method of manufacturing a capacitive touch screen structure, comprising:

forming a first substrate layer (100); the first substrate layer (100) comprises a first substrate body portion and a first substrate extension portion extending from the first substrate body portion, the first substrate body portion and the first substrate extension portion being integrally formed;

Coating a first glue layer (200) on the first substrate layer (100); the first adhesive layer (200) comprises a first adhesive layer body part and a first adhesive layer extending part extending from the first adhesive layer body part, and the first adhesive layer body part and the first adhesive layer extending part are integrally formed; the first adhesive layer body part is arranged on the first substrate body part, and the first adhesive layer extension part is arranged on the first substrate extension part;

forming a first conductive layer (300) on the first glue layer (200); the first conductive layer (300) comprises a first conductive body portion and a first conductive extension extending from the first conductive body portion, the first conductive body portion and the first conductive extension being integrally formed; the first conductive body part is arranged on the first adhesive layer body part, and the first conductive extension part is arranged on the first adhesive layer extension part;

coating a second glue layer (400) on the first conductive body portion;

and a cover plate (500) is arranged on the second adhesive layer (400).

13. The method of manufacturing a capacitive touch screen structure according to claim 12, wherein forming a first conductive layer (300) on the first glue layer (200) comprises:

Rolling the first adhesive layer (200) by using a roller (202) with convex teeth to form a plurality of first strip-shaped grooves (201) on the first adhesive layer (200); the first strip-shaped groove (201) extends from the first adhesive layer body part to the first adhesive layer extending part;

first conductive lines are formed in each of the first stripe-shaped grooves (201) to form the first conductive layer (300) through all the conductive lines.

14. The method of manufacturing a capacitive touch screen structure according to claim 13, wherein said forming a first conductive line within each of said first bar grooves (201) comprises:

scraping metal paste into each first strip-shaped groove (201) through a scraper (203), wherein the metal paste fills the first strip-shaped grooves (201);

the metal paste in the first strip-shaped groove (201) is solidified to form the first conductive line through the first metal paste line formed in the first strip-shaped groove (201).

15. The method of manufacturing a capacitive touch screen structure of claim 12, further comprising:

coating a first protective layer (600) on the first conductive extension;

the first protection layer (600) and the first adhesive layer extending part are respectively positioned at two sides of the first conductive extending part.

16. The method of manufacturing a capacitive touch screen structure according to any one of claims 12 to 15, characterized in that said step of providing a cover plate (500) on said second glue layer (400) further comprises:

forming a second substrate layer (110), coating a third adhesive layer (210) on the second substrate layer (110), forming a first conductive layer (300) on the third adhesive layer (210), coating a fourth adhesive layer (410) on the second conductive layer (310), and bonding the first substrate layer (100) and the second conductive layer (310) through the fourth adhesive layer (410);

the second substrate layer (110) has the same structure as the first substrate layer (100), the third adhesive layer (210) has the same structure as the first adhesive layer (200), the second conductive layer (310) has the same structure as the first conductive layer (300), and the fourth adhesive layer (410) has the same structure as the second adhesive layer (400).