CN113093940A - Touch screen with metal grid integrated on cover plate and manufacturing method thereof - Google Patents

Touch screen with metal grid integrated on cover plate and manufacturing method thereof Download PDF

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Publication number
CN113093940A
CN113093940A CN202110344378.3A CN202110344378A CN113093940A CN 113093940 A CN113093940 A CN 113093940A CN 202110344378 A CN202110344378 A CN 202110344378A CN 113093940 A CN113093940 A CN 113093940A
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China
Prior art keywords
layer
conductive
adhesive layer
cover plate
metal grid
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CN202110344378.3A
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Chinese (zh)
Inventor
高俊奎
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Mutto Optronics Corp
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Mutto Optronics Corp
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Priority to CN202110344378.3A priority Critical patent/CN113093940A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)

Abstract

The embodiment of the invention discloses a touch screen with a metal grid integrated on a cover plate and a manufacturing method thereof, wherein the touch screen with the metal grid integrated on the cover plate comprises a flexible base material, a plating layer and a first UV adhesive layer, wherein the plating layer and the first UV adhesive layer are respectively arranged on two sides of the flexible base material, and a plurality of first grooves are formed on the first UV adhesive layer; the first conducting layer is formed by solidifying the conducting material filled in the first groove; the second UV adhesive layer is attached to the first UV adhesive layer and comprises a plurality of second grooves; the second conducting layer is formed by solidifying the conducting material filled in the second groove; the adhesive layer is attached to one side of the second conductive layer; the display module is attached to one side of the adhesive layer, so that the attaching times in the manufacturing process are reduced, the process flow is simplified, and in the manufacturing method, the sensing capacitor layer and the driving capacitor layer are all integrated on the cover plate.

Description

Touch screen with metal grid integrated on cover plate and manufacturing method thereof
Technical Field
The embodiment of the invention relates to the technical field of touch screens with metal grids integrated on cover plates, in particular to a touch screen with metal grids integrated on a cover plate and a manufacturing method thereof.
Background
The touch screen with the metal grid integrated on the cover plate is an inductive device capable of receiving signals such as touch and the like. The touch screen with the metal grid integrated on the cover plate gives brand-new appearance of information interaction, and is brand-new information interaction equipment with great attraction. The development of the touch screen technology that the metal grid is integrated on the cover plate arouses the general attention of the information transmission world at home and abroad, and the touch screen technology becomes the sunward high and new technology industry which is different from the army and prominence in the photoelectric industry.
In the prior art, a touch display screen generally comprises a cover plate, a binder, an induction electrode layer, a PET substrate, a binder, a driving electrode layer, a PET substrate, a binder, a liquid crystal display module and the like. The touch display screen with the structure is thick, the stacking layers are 7 layers, the laminating process is complicated, the multi-layer structure is laminated through the adhesive, and the sensing electrode layer and the driving electrode layer cannot be integrated together.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a touch panel with a metal grid integrated on a cover plate and a method for manufacturing the touch panel, in which the metal grid is integrated on the cover plate, and the sensing electrode layer and the driving electrode layer are all integrated on the cover plate, so as to reduce the number of times of bonding in the manufacturing process and simplify the process flow.
A first aspect of embodiments of the present invention provides a touch screen with a metal grid integrated on a cover plate, including:
a flexible substrate comprising a first surface and a second surface, the first surface disposed opposite the second surface;
a plating layer plated on the first surface;
the first UV adhesive layer is attached to the second surface, a plurality of first grooves are formed in one side, away from the second surface, of the first UV adhesive layer, and the first grooves are formed in a patterned stamping mode;
the first conductive layer comprises a plurality of first conductive pattern areas, the first conductive pattern areas comprise in-plane metal grids formed by crossing a plurality of metal wires and edge routing patterns, the conductive grids of the first conductive pattern areas are formed by curing conductive materials filled in the first grooves, and the plurality of first conductive pattern areas are insulated from one another;
the second UV adhesive layer is attached to one side, close to the first conducting layer, of the first UV adhesive layer, a plurality of second grooves are formed in one side, far away from the first conducting layer, of the second UV adhesive layer, and the second grooves are formed in a patterned stamping mode;
the second conductive layer comprises a plurality of second conductive pattern areas, the second conductive pattern areas comprise in-plane conductive grids and edge routing patterns, the in-plane conductive grids and the edge routing patterns are formed by crossing a plurality of electric wires, the conductive grids of the second conductive pattern areas are formed by curing conductive materials filled in the second grooves, and the second conductive pattern areas are insulated from each other;
the adhesive layer is attached to one side, far away from the flexible substrate, of the second conducting layer;
and the display module is attached to one side of the adhesive layer, which is far away from the second conductive layer.
In one embodiment, the plating layer includes at least a hardened layer, and the plating layer is plated on the first surface by a dry or wet process.
In one embodiment, the thicknesses of the first UV glue layer and the second UV glue layer are equal, the thicknesses of the first conductive layer and the second conductive layer are equal, the thickness of the first conductive layer is not greater than the depth of the first groove, and the thickness of the second conductive layer is not greater than the depth of the second groove.
In one embodiment, the flexible substrate is any one of flexible PET, TAC, PC and PMMA.
In one embodiment, the first UV glue layer and the second UV glue layer are acrylic resin or epoxy resin.
In one embodiment, the material of the first conductive layer and the second conductive layer is silver paste, and the silver paste is formed by mixing epoxy resin, silver particles and additives.
In one embodiment, the thicknesses of the first UV glue and the second UV glue are both 8-12 μm.
In one embodiment, the depth of each of the first groove and the second groove is 2-4 μm.
In one embodiment, the line width of the in-plane metal grid is 3-6 μm, and the line width and line distance of the edge routing is 15 μm/15 μm or 20-20 μm. .
According to a second aspect of embodiments of the present invention, there is provided a method of manufacturing a touch screen in which a metal mesh is integrated on a cover plate, including the steps of:
providing a flexible substrate comprising a first surface and a second surface arranged oppositely;
forming a plating layer, wherein the plating layer is plated on the first surface;
printing a first UV adhesive layer, and printing a first UV adhesive layer with the thickness of 8-12 mu m on the second surface through a screen printer;
imprinting a first groove, namely imprinting a first groove with a preset shape on one side of the first UV adhesive layer away from the second surface;
printing a first conductive layer, printing a layer of conductive material with the thickness of 2-4 mu m in the first groove through a screen printer, and curing, wherein the first conductive layer and the first groove form an in-plane metal grid pattern and an edge routing pattern;
printing a second UV adhesive layer, and printing a second UV adhesive layer with the thickness of 8-12 microns on one side, close to the first conductive layer, of the first UV adhesive layer through a screen printer;
imprinting a second groove, namely imprinting a second groove with a preset shape on one side of the second UV adhesive layer away from the second surface;
printing a second conductive layer, printing a layer of conductive material with the thickness of 2-4 μm in the second groove through a screen printer, and curing, wherein the second conductive layer and the second groove form an in-plane metal grid pattern and an edge routing pattern;
attaching an adhesive layer, wherein the adhesive layer is attached to one side, far away from the flexible substrate, of the second conductive layer;
and the adhesive layer is attached to one side of the second conductive layer.
According to the touch screen with the metal grid integrated on the cover plate, the sensing electrode layer and the driving electrode layer can be integrated on the cover plate, so that the attaching times in the manufacturing process are reduced, the process flow is simplified, and compared with a conventional touch display screen, the touch screen with the metal grid integrated on the cover plate has the following advantages:
1. the structure is simple to stack, only 3 layers of touch screens are formed, and only 1 layer of touch screens with metal grids integrated on the cover plate is provided;
2. the laminating times are less, and the touch screen and the display screen which are integrated on the cover plate by the metal grids can be laminated together only by laminating twice in the manufacturing process;
3. the manufacturing process is simple, the induction electrode layer and the driving electrode layer are directly integrated on the cover plate, and the raw material and the laminating manufacturing process do not need to be repeatedly circulated;
4. the touch screen with the metal grid integrated on the cover plate is only provided with one cover plate, so that the thicknesses of two layers of adhesives and two layers of base materials are saved;
5. the flexible metal grid integrated touch screen is suitable for the touch screen with the flexible metal grid integrated on the cover plate, and the touch screen with the metal grid integrated on the cover plate is formed by only one layer of flexible plastic cover plate without a rigid CG glass cover plate.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic structural diagram of a touch screen with a metal grid integrated on a cover plate according to an embodiment of the present invention;
FIG. 2 is a schematic view of the cover plate of FIG. 1;
FIG. 3 is a schematic structural diagram of a metal grid in a first conductive layer and a second conductive layer provided by an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a metal grid in the first conductive layer and the second conductive layer according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a touch screen with a metal grid integrated on a cover plate according to an embodiment of the present invention;
fig. 6 is a flowchart of a manufacturing process of a touch screen with a metal grid integrated on a cover plate according to an embodiment of the present invention.
In the figure:
1-a display module; 2-a binder layer; 3-cover plate; 31-a drive electrode layer; 311-a second conductive layer; 3110-first conductive pattern region; 3111-a second recess; 312-a second UV glue layer; 313-a third metal line; 314-a fourth metal line; 32-a sensing electrode layer; 321-a first conductive layer; 3210-first conductive pattern region; 3211-a first groove; 322-first UV glue layer; 323-a first metal line; 324-a second metal line; 33-a flexible substrate; 331-a first surface; 332-a second surface; 34-coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Referring to fig. 1, 2 and 5, a touch screen with a metal grid integrated on a cover plate includes:
a flexible substrate 33, the flexible substrate 33 comprising a first surface 331 and a second surface 332, the first surface 331 being disposed opposite the second surface 332;
a plating layer 34, the plating layer 34 being plated on the first surface 331;
the first UV adhesive layer 322 is attached to the second surface 332, a plurality of first grooves 3211 are formed on one side of the first UV adhesive layer 322 away from the second surface 332, and the first grooves 3211 are formed by patterned imprinting;
a first conductive layer 321 including a plurality of first conductive pattern regions 3210, where the first conductive pattern region 3210 includes an in-plane metal mesh and an edge routing pattern formed by crossing a plurality of metal lines, the conductive mesh of the first conductive pattern region 3210 is formed by curing a conductive material filled in the first groove 3211, and the plurality of first conductive pattern regions 3210 are insulated from each other;
the first UV glue layer 322 and the first conductive layer 321 constitute the sensing electrode layer 32;
the second UV adhesive layer 312 is attached to one side of the first UV adhesive layer 322 close to the first conductive layer 321, a plurality of second grooves 3111 are formed in one side of the second UV adhesive layer 312 away from the first conductive layer 321, and the second grooves 3111 are formed by patterning and imprinting;
a second conductive layer 311, including a plurality of second conductive pattern regions 3110, where the second conductive pattern region 3110 includes an in-plane conductive mesh and an edge trace pattern formed by crossing a plurality of wires, the conductive mesh of the second conductive pattern region 3110 is formed by curing a conductive material filled in the second groove 3111, and the plurality of second conductive pattern regions 3110 are insulated from each other;
the second UV glue layer 312 and the second conductive layer 311 constitute the driving electrode layer 31;
the adhesive layer 2 is attached to one side of the second conductive layer 311 away from the flexible substrate 33;
and the display module 1 is attached to one side of the adhesive layer 2, which is far away from the second conductive layer 311.
Above-mentioned touch-sensitive screen of metal net integration on apron because utilize flexible substrate 33, have excellent resistant bending property, can be fit for the touch-sensitive screen of the metal net integration on the apron of flexibility, curved surface, 3D structure, directly form first conducting layer 321 in One side of flexible substrate 33, thereby the adhesive layer has been left out, the preparation flow has not only been simplified, and the cost is reduced, the structure is frivolous, apron 3 is not rigid CG glass material simultaneously, but flexible substrate, can realize the true One Film sensor.
Specifically, the flexible substrate 33 may be a flexible substrate such as PET, TAC, PC, PMMA, etc., and has a thickness of 25 μm, 38 μm, 40 μm, 50 μm, 60 μm, 75 μm, 80 μm, 100 μm, 125 μm, 188 μm, etc., the thickness of the PET substrate is generally 38 μm or 50 μm, the thickness of the TAC substrate is generally 40 μm or 60 μm, and the thickness of the PC, PMMA is generally 50 μm.
Specifically, in this embodiment, the plating layer 34 is generally four plating layers 34, i.e., a hard coating layer (HC), an anti-glare layer (AG), an anti-reflection layer (AR), and an anti-fingerprint layer (AF), sequentially from the inside to the outside, and may be a simple HC plating layer 34, an HCAF plating layer 34, an HCAGAF or HCARAF plating layer 34, or an hcagaaf plating layer 34. AG. The AR, AF and HC can be coated by adopting a dry process such as magnetron sputtering, evaporation plating and the like, and can also be coated by adopting a wet process such as spraying, curtain coating, spin coating and the like, and the main purpose is to improve the surface hardness and the fingerprint resistance of the cover plate 3, ensure that the surface hardness reaches 750g 3H-9H, simultaneously increase the transmittance of the cover plate 3, reduce the reflectance of the cover plate 3, enhance the anti-dizziness function of the cover plate 3 and achieve excellent optical effect.
Specifically, in this embodiment, the first UV adhesive layer 322 and the second UV adhesive layer 312 are both made of acrylic resin or epoxy resin, and the UV adhesive can be embossed into a desired groove by adjusting parameters such as pressure under a mold with a groove having a certain thickness. The thickness of the UV glue is generally between 8 and 12 microns, the thickness of a groove of the die is generally between 2 and 4 microns, the die and the UV glue with the thickness of silk screen printing are combined to be thick, the UV glue can form in-plane metal grids and edge routing with different shapes by adjusting pressure, and the groove thickness of the UV glue after imprinting is generally between 2 and 4 microns.
Specifically, in this embodiment, the first conductive layer 321 and the second conductive layer 311 are generally silver paste formed by mixing epoxy resin and silver particles with other additives, the color is generally gray, the silver paste is filled into the groove of the UV paste by a silver filling process, and the printing thickness is adjusted according to the mesh number of the screen, the pressure of the scraper, the speed of the scraper, the ink returning speed, and the like, and can reach 2 μm to 4 μm. Generally, the silver filling thickness of the silver paste is smaller than the groove thickness of the UV paste.
Specifically, the die groove is actually an in-plane metal grid pattern and an edge trace pattern of the capacitor layer formed by Ag and UV glue, the line width of the metal grid pattern is generally 3-6 μm, and the line width and line distance of the edge trace can be 15 μm/15 μm and 20 μm/20 μm. The design of the line width of the metal grid pattern, the line width and line distance of the edge wiring, the design of the metal grid pattern in the surface and the design of the edge wiring pattern are realized by impressing the pattern designed on the mold through UV glue, impressing the mold pattern on the UV glue pattern, and filling silver paste on the UV glue pattern, thereby realizing the metal grid with the conductive function. The pattern formed by the in-plane metal grid pattern Ag wires is a diamond structure, and the diamond angles of the sensing electrode layer and the driving electrode layer can be kept consistent (as shown in figure 3) or can be shifted by 5-10 ℃ (as shown in figure 4).
Specifically, as shown in fig. 4, the first conductive layer 321 includes a plurality of first metal lines 323 along a first direction and a plurality of second metal lines 324 along a second direction, the first metal lines 323 and the second metal lines 324 are staggered with each other to form a diamond grid, and it can be seen that a diagonal line a of the diamond forms an included angle α with the first metal lines 323;
the second electrode layer comprises a plurality of third metal wires 313 along the first direction and a plurality of fourth metal wires 314 along the second direction, the third metal wires 313 and the fourth metal wires 314 are mutually staggered to form a rhombic grid shape, and it can be seen that the diagonal line a of the rhombus is mapped on the driving electrode to be a line c, and the included angle between the third metal wires 313 is beta; wherein the offset angle between alpha and beta is a preset angle, and the offset is 5-10 degrees.
Specifically, in this embodiment, the adhesive layer may be a solid optical transparent adhesive, or a liquid silicone glue or an acrylic glue, and has a high transmittance and a high viscosity.
Specifically, in this embodiment, the display module 1 may be a TFT liquid crystal display module 1, an IPS liquid crystal display module 1, or a flexible OLED display.
As shown in fig. 6, a method for manufacturing a touch screen in which a metal mesh is integrated on a cover plate, includes the steps of:
s1, providing a flexible substrate including a first surface 331 and a second surface 332 oppositely disposed;
s2, forming a plated layer 34, wherein the plated layer 34 is plated on the first surface 331;
s3, printing a first UV adhesive layer 322, and printing a first UV adhesive layer 322 with the thickness of 8-12 μm on the second surface 332 through a screen printing machine;
s4, stamping a first groove 3211 with a predetermined shape on a side of the first UV glue layer 322 away from the second surface 332;
s5, printing a first conducting layer 321, printing a layer of conducting material with the thickness of 2-4 μm in the first groove 3211 through a screen printer, and curing, wherein the first conducting layer 321 and the first groove 3211 form an in-plane metal grid pattern and an edge routing pattern;
s6, printing a second UV adhesive layer 312, and printing the second UV adhesive layer 312 with the thickness of 8-12 μm on one side, close to the first conductive layer 321, of the first UV adhesive layer 322 through a screen printer;
s7, stamping a second groove 3111 with a predetermined shape on the side of the second UV glue layer 312 away from the second surface 332;
s8, printing a second conductive layer 311, printing a layer of conductive material with a thickness of 2 μm to 4 μm in the second groove 3111 by a screen printer, and curing, where the second conductive layer 311 and the second groove 3111 form an in-plane metal grid pattern and an edge trace pattern;
s9, attaching an adhesive layer 2, and attaching the adhesive layer 2 to the side of the second conductive layer 311 away from the flexible substrate 33;
and S10, attaching the display module 1, wherein the adhesive layer 2 is attached to the display module 1 on the side far away from the second conductive layer 311.
Specifically, the plating layer 34 in S2 may be formed by a dry process such as magnetron sputtering or vapor deposition, or by a wet process such as spray coating, curtain coating, or spin coating.
Specifically, S3, printing a first UV adhesive layer 322 with a thickness of 8-12 μm on a second surface 332 through a screen printer, imprinting the first UV adhesive layer 322 through a mold with a groove thickness of 2-4 μm under a certain pressure, imprinting a mold pattern on the first UV adhesive layer 322 to form a groove with a thickness of 2-4 μm on the surface of the first UV adhesive layer 322, completely curing the first UV adhesive layer 322 through UV irradiation, and printing a first conductive layer 321 with a thickness of 2-4 μm on the groove of the first UV adhesive layer 322 through the screen printer, wherein the groove patterns of the first conductive layer 321 and the first UV adhesive layer 322 form an in-plane metal grid pattern and an edge routing pattern of the sensing electrode layer; s6, the process of printing the second UV glue layer 312 is similar to that of S3, and is not repeated herein.
Specifically, S4, first grooves 3211 and S7 are embossed, and second grooves 3111 are embossed, wherein the mold grooves are actually an in-plane metal grid pattern and an edge trace pattern of the capacitor layer formed by Ag and UV paste, the line width of the metal grid pattern is generally 3 μm to 6 μm, and the line width and line pitch of the edge traces can be 15 μm/15 μm and 20 μm/20 μm. The design of the line width of the metal grid pattern, the line width and line distance of the edge wiring, the design of the metal grid pattern in the surface and the design of the edge wiring pattern are realized by impressing the pattern designed on the mold through UV glue, impressing the mold pattern on the UV glue pattern, and filling silver paste on the UV glue pattern, thereby realizing the metal grid with the conductive function.
Specifically, in step S5, the first conductive layer 321 is printed by filling silver paste into the grooves of the UV paste by a silver filling process, and the printing thickness is adjusted according to the mesh number of the screen, the pressure of the squeegee, the hanging speed, and the ink returning speed; s8, the process of printing the second conductive layer 311 is the same as S5, and is not repeated.
Specifically, in S9, a large piece is die-cut by a die-cutting process before the adhesive layer 2 is attached, and an adhesive is attached to the second conductive layer 311 of the small piece.
Specifically, a small piece to which the adhesive is attached to the display module 1, so that the touch display screen is obtained.
The metal grid integrating the metal grid on the cover plate 3 is integrated on the touch screen on the cover plate, so that the induction electrode layer and the driving electrode layer can be integrated on the cover plate 3, the laminating times in the manufacturing process are reduced, the process flow is simplified, and compared with a conventional touch display screen, the touch screen has the following advantages:
1. the structure is simple to stack, only 3 layers of touch screens are formed, and only 1 layer of touch screens with metal grids integrated on the cover plate is provided;
2. the laminating times are less, and the touch screen and the display screen which are integrated on the cover plate by the metal grids can be laminated together only by laminating twice in the manufacturing process;
3. the manufacturing process is simple, the induction electrode layer and the driving electrode layer are directly integrated on the cover plate 3, and the raw materials do not need to be repeatedly circulated and the laminating manufacturing process is not needed;
4. the touch screen with the metal grid integrated on the cover plate is only as thick as one cover plate 3, so that the thicknesses of two layers of adhesives and two layers of base materials are saved;
5. the flexible metal grid integrated touch screen is suitable for a touch screen with a flexible metal grid integrated on a cover plate, and the rigid CG glass cover plate 3 is not needed, only one layer of flexible plastic cover plate 3 forms the touch screen with the metal grid integrated on the cover plate, and the flexible metal grid integrated touch screen is suitable for the touch screen with the flexible metal grid integrated on the cover plate.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that the features of the various embodiments of the invention may be partially or fully coupled to each other or combined and may be capable of cooperating with each other in various ways and of being technically driven. Numerous variations, rearrangements, combinations, and substitutions will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. Touch-sensitive screen of metal mesh integration on apron, its characterized in that includes:
a flexible substrate comprising a first surface and a second surface, the first surface disposed opposite the second surface;
a plating layer plated on the first surface;
the first UV adhesive layer is attached to the second surface, a plurality of first grooves are formed in one side, away from the second surface, of the first UV adhesive layer, and the first grooves are formed in a patterned stamping mode;
the first conductive layer comprises a plurality of first conductive pattern areas, the first conductive pattern areas comprise in-plane metal grids formed by crossing a plurality of metal wires and edge routing patterns, the conductive grids of the first conductive pattern areas are formed by curing conductive materials filled in the first grooves, and the plurality of first conductive pattern areas are insulated from one another;
the second UV adhesive layer is attached to one side, close to the first conducting layer, of the first UV adhesive layer, a plurality of second grooves are formed in one side, far away from the first conducting layer, of the second UV adhesive layer, and the second grooves are formed in a patterned stamping mode;
the second conductive layer comprises a plurality of second conductive pattern areas, the second conductive pattern areas comprise in-plane conductive grids and edge routing patterns, the in-plane conductive grids and the edge routing patterns are formed by crossing a plurality of electric wires, the conductive grids of the second conductive pattern areas are formed by curing conductive materials filled in the second grooves, and the second conductive pattern areas are insulated from each other;
the adhesive layer is attached to one side, far away from the flexible substrate, of the second conducting layer;
and the display module is attached to one side of the adhesive layer, which is far away from the second conductive layer.
2. The touch screen with the metal grid integrated on the cover plate according to claim 1, wherein the plating layer comprises at least a hardened layer, and the plating layer is plated on the first surface by a dry or wet process.
3. The touch screen with the metal grid integrated on the cover plate according to claim 1, wherein the first UV glue layer and the second UV glue layer have equal thickness, the first conductive layer and the second conductive layer have equal thickness, the first conductive layer has thickness not larger than the depth of the first groove, and the second conductive layer has thickness not larger than the depth of the second groove.
4. The touch screen with the metal grid integrated on the cover plate according to claim 1, wherein the flexible substrate is any one of flexible PET, TAC, PC and PMMA.
5. The touch screen with the metal grid integrated on the cover plate as recited in claim 1, wherein the first UV glue layer and the second UV glue layer are acrylic resin or epoxy resin.
6. The touch screen with a metal grid integrated on a cover plate according to claim 1, wherein the material of the first conductive layer and the second conductive layer is silver paste mixed by epoxy resin, silver particles and additives.
7. The touch screen with the metal grid integrated on the cover plate as claimed in claim 1, wherein the thicknesses of the first UV glue and the second UV glue are both 8-12 μm.
8. The touch screen with the metal grid integrated on the cover plate as claimed in claim 1, wherein the first groove and the second groove are both 2 μm to 4 μm in depth.
9. The touch screen with the metal grid integrated on the cover plate as claimed in claim 1, wherein the in-plane metal grid has a line width of 3 μm to 6 μm, and the edge traces have a line width and a line distance of 15 μm/15 μm or 20 μm to 20 μm.
10. A method of manufacturing a touch screen having a metal mesh integrated on a cover plate, comprising the steps of:
providing a flexible substrate comprising a first surface and a second surface arranged oppositely;
forming a plating layer, wherein the plating layer is plated on the first surface;
printing a first UV adhesive layer, and printing a first UV adhesive layer with the thickness of 8-12 mu m on the second surface through a screen printer;
imprinting a first groove, namely imprinting a first groove with a preset shape on one side of the first UV adhesive layer away from the second surface;
printing a first conductive layer, printing a layer of conductive material with the thickness of 2-4 mu m in the first groove through a screen printer, and curing, wherein the first conductive layer and the first groove form an in-plane metal grid pattern and an edge routing pattern;
printing a second UV adhesive layer, and printing a second UV adhesive layer with the thickness of 8-12 microns on one side, close to the first conductive layer, of the first UV adhesive layer through a screen printer;
imprinting a second groove, namely imprinting a second groove with a preset shape on one side of the second UV adhesive layer away from the second surface;
printing a second conductive layer, printing a layer of conductive material with the thickness of 2-4 μm in the second groove through a screen printer, and curing, wherein the second conductive layer and the second groove form an in-plane metal grid pattern and an edge routing pattern;
attaching an adhesive layer, wherein the adhesive layer is attached to one side, far away from the flexible substrate, of the second conductive layer;
and the adhesive layer is attached to one side of the second conductive layer.
CN202110344378.3A 2021-03-31 2021-03-31 Touch screen with metal grid integrated on cover plate and manufacturing method thereof Pending CN113093940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110344378.3A CN113093940A (en) 2021-03-31 2021-03-31 Touch screen with metal grid integrated on cover plate and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110344378.3A CN113093940A (en) 2021-03-31 2021-03-31 Touch screen with metal grid integrated on cover plate and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN113093940A true CN113093940A (en) 2021-07-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110344378.3A Pending CN113093940A (en) 2021-03-31 2021-03-31 Touch screen with metal grid integrated on cover plate and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN113093940A (en)

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