CN110045865A - The preparation method of touch screen - Google Patents
The preparation method of touch screen Download PDFInfo
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- CN110045865A CN110045865A CN201910168607.3A CN201910168607A CN110045865A CN 110045865 A CN110045865 A CN 110045865A CN 201910168607 A CN201910168607 A CN 201910168607A CN 110045865 A CN110045865 A CN 110045865A
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- Prior art keywords
- flexible material
- flexible
- groove
- material layer
- groove structure
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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
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- 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)
- Manufacturing Of Printed Wiring (AREA)
Abstract
The present invention provides a kind of preparation method of touch screen, includes the following steps: to provide the printing work platform for being provided with soft cushioning；In being scratched using blade coating tool to slurry on soft cushioning in forming the first seed layer in each first groove structure；Based on the first seed layer in forming the first metal wire in the first groove structure；The first transparent optical glue-line is formed in the upper surface of driving layer structure；In carrying out scratching in each second groove structure to slurry using blade coating tool on soft cushioning forming second of sublayer；Based on second of sublayer in forming the second metal wire in each second groove structure；Inductive layer structure is adhered on to the upper surface of the first transparent optical glue-line；The second transparent optical glue-line is formed in the upper surface of inductive layer structure；Cover transparent sheet is provided, cover transparent sheet is adhered on to the upper surface of the second transparent optical glue-line.The preparation method of touch screen of the invention does not need the step of additional precuring and cleaning, to simplify process flow, reduces production cost.
Description
Technical field
The invention belongs to technical field of touch control, more particularly to a kind of preparation method of touch screen.
Background technique
Touch screen is usually to have metal grill to constitute channel and have function.Metal grill is mostly regular figure, as rectangle,
Diamond shape or hexagon etc..Metal grill in existing touch screen generally passes through the shape in the groove structure of flexible material layer
It is obtained at conductive layer, the obtained metal grill is connected via flexible circuit board (FPC) with processing chip.And existing skill
In art, the method for conductive layer is formed as shown in Figure 1, generally folding the flexibility including flexible substrates 101 and flexible material layer 102
Layer structure 10 is placed in the upper surface of a printing work platform 12, in the upper surface drop coating electrocondution slurry of the flexible material layer 102
13 (for example silver pastes) scratch the electrocondution slurry 13 using scraper 14 afterwards so that the electrocondution slurry 13 be filled in it is each described recessed
Solidified after in slot structure 11 and obtains conductive layer.
However, when carrying out the blade coating of the electrocondution slurry 13 using above-mentioned process, since the printing work is flat
Platform 12 is generally working metal platform, when the area of the especially described working metal platform is bigger, the printing work platform
The flatness of 12 upper surface not can guarantee, i.e., the upper surface of the described printing work platform 12 has pit or protrusion exists,
When carrying out the blade coating of the electrocondution slurry 13, since there is the presence of pit or protrusion in the upper surface of the printing work platform 12,
The electrocondution slurry 13, can be residual in the upper surface of the flexible material layer 102 while being filled in the groove structure 11
It stays；It needs the upper surface to the flexible material layer 102 to clean after the completion of blade coating, the flexible material will be remained on
The electrocondution slurry 13 of 102 upper surface of layer removes, and the electrocondution slurry 13 could be sintered to solidification to be formed after cleaning
The conductive layer, so that the entire processing step of touch screen preparation is complicated, higher cost.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of preparation method of touch screen,
For solving to will cause table on flexible material layer when the upper surface of flexible material layer carries out electrocondution slurry blade coating in the prior art
There is electrocondution slurry residual in face, to need the upper surface to the flexible material layer to clean after the completion of blade coating, after cleaning
Electrocondution slurry could be sintered and be formed by curing conductive layer, so that the entire processing step of touch screen is more complicated, be produced into
This higher problem.
In order to achieve the above objects and other related objects, the present invention provides a kind of preparation method of touch screen, the touch-control
The preparation method of screen comprising steps of
Printing work platform is provided, the upper surface of the printing work platform is provided with soft cushioning；
The first flexible overlapping structure is set in the upper surface of the soft cushioning, the first flexible overlapping structure includes first
Flexible substrates and the first flexible material layer, first flexible substrates are located at the upper surface of the soft cushioning, and described first is flexible
Material layer is located at the upper surface of first flexible substrates, and it is recessed that the upper surface of first flexible material layer is formed with multiple first
Slot structure；
Slurry is placed in the upper surface of first flexible material layer；The slurry is scratched using blade coating tool,
So that the filled therewith is in forming the first seed layer in each first groove structure；
Based on first seed layer in forming the first metal wire, the first metal wire phase in first groove structure
It connects to form the first metal grill；The first flexible overlapping structure, first seed layer and first metal grill
Collectively form driving layer structure；
The first transparent optical glue-line is formed in the upper surface of the driving layer structure；
The second flexible overlapping structure is set in the upper surface of the soft cushioning, the second flexible overlapping structure includes second
Flexible substrates and the second flexible material layer, second flexible substrates are located at the upper surface of the soft cushioning, and described second is flexible
Material layer is located at the upper surface of second flexible substrates, and it is recessed that the upper surface of second flexible material layer is formed with multiple second
Slot structure；
Slurry is placed in the upper surface of second flexible material layer, the slurry is scraped using the blade coating tool
It applies, so that the filled therewith is in forming second of sublayer in each second groove structure；
Based on second of sublayer in forming the second metal wire, second metal wire in each second groove structure
It is interconnected to form the second metal grill；The second flexible overlapping structure, second of sublayer and second metal mesh
Lattice collectively form inductive layer structure；
The inductive layer structure is adhered on to the upper surface of the first transparent optical glue-line；
The second transparent optical glue-line is formed in the upper surface of the inductive layer structure；
Cover transparent sheet is provided, the cover transparent sheet is adhered on to the upper surface of the second transparent optical glue-line.
Optionally, the printing work platform includes metallic work table.
Optionally, the soft cushioning includes liner of Shao A hardness between 30 degree~80 degree.
Optionally, the soft cushioning includes rubber pad, blanket, silicagel pad or silicone rubber pad.
Optionally, the thickness of the soft cushioning includes 0.5 millimeter~10 millimeters.
Optionally, during the slurry to the upper surface for being located at first flexible material layer scratches,
The angle of the upper surface of the blade coating tool and first flexible material layer includes 30 °~70 °, and blade coating pressure includes 4 kilograms
Power is every square centimeter~6 Kgfs it is every square centimeter, blade coating speed include 50 millimeters it is per second~260 millimeters it is per second；To being located at
During the slurry of the upper surface of second flexible material layer is scratched, the blade coating tool and described second soft
Property material layer upper surface angle include 30 °~70 °, blade coating pressure include 4 Kgfs it is every square centimeter~6 Kgfs often put down
Square centimetre, blade coating speed include 50 millimeters it is per second~260 millimeters it is per second.
Optionally, the slurry includes seed ink.
Optionally, by the filled therewith after in first groove structure, the slurry is solidified to be formed
First seed layer；By the filled therewith after in second groove structure, the slurry is solidified to be formed
Second of sublayer.
Optionally, the depth of first groove structure includes 1 micron~20 microns, the width of first groove structure
Including 1 micron~10 microns；It is recessed that the sum of first metal wire and the thickness of first seed layer are less than or equal to described first
The depth of slot structure, the width of first metal wire are of same size with first groove structure；The second groove knot
The depth of structure includes 1 micron~20 microns, and the width of second groove structure includes 1 micron~10 microns；Second gold medal
Belong to the depth that the sum of thickness of line and second of sublayer is less than or equal to second groove structure, second metal wire
Width is of same size with second groove structure.
Optionally, first transparent optical cement includes OCA optical cement, and second transparent optical cement includes OCA optics
Glue, the cover transparent sheet include transparent glass.
Optionally, while the upper surface of the first flexible material layer of Yu Suoshu forms first groove structure, Yu Suoshu
The upper surface of first flexible material layer forms first lead groove, and the first lead groove is connected with first groove structure
It is logical；First seed layer is formed simultaneously in first groove structure and in the first lead groove；In described first
While forming first metal wire in groove structure, formation first lead in Yu Suoshu first lead groove, described first
Lead is connected with first metal wire；
While the upper surface of second flexible material layer forms second groove structure, Yu Suoshu second is flexible
The upper surface of material layer forms the second lead groove, and the second lead groove is connected with second groove structure；It is described
Second of sublayer is formed simultaneously in second groove structure and in the second lead groove；In second groove structure
While interior formation second metal wire, the second lead, second lead and institute are formed in the second lead of Yu Suoshu groove
The second metal wire is stated to be connected.
Optionally, the cover transparent sheet is adhered on behind the upper surface of the second transparent optical glue-line further includes walking as follows
It is rapid:
Flexible circuit board and processing chip are provided；
The flexible circuit board is coupled with first metal grill, second metal grill and the processing chip
Connection, so that first metal grill and second metal grill are via the flexible circuit board and the processing chip
Electrical connection.
As described above, the preparation method of touch screen of the invention, has the advantages that
In the preparation method of touch screen of the invention, when preparing the first seed layer and second of sublayer, respectively by first
Flexible overlapping structure and the second flexible overlapping structure are placed in the upper surface progress slurry for being provided with the printing work platform of soft cushioning
Blade coating, it is soft under the action of scratching pressure when carrying out the blade coating of slurry using blade coating tool due to the presence of soft cushioning
Liner can absorb the factor of printing work platform part out-of-flatness, to avoid slurry flexible in the first flexible material layer and second
The residual of material surface, it is ensured that the upper table of the upper surface of the first flexible material layer and the second flexible material layer after the completion of blade coating
The cleannes in face do not need additional the step of carrying out precuring to slurry and to the upper surface of the first flexible material layer and second
The step of upper surface of flexible material layer is cleaned reduces production cost to simplify process flow.
Detailed description of the invention
Fig. 1 is shown as carrying out the structural schematic diagram of electrocondution slurry blade coating in the upper surface of flexible material layer in the prior art.
Fig. 2 is shown as the flow chart of the preparation method of touch screen provided by the invention.
Fig. 3 is shown as the cross section structure signal of step 1) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Fig. 4 is shown as the cross section structure signal of step 2) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Fig. 5 to Fig. 7 is shown as the cross section structure of step 3) resulting structures in the preparation method of touch screen provided by the invention
Schematic diagram.
Fig. 8 is shown as the cross section structure signal of step 4) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Fig. 9 is shown as the cross section structure signal of step 5) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Figure 10 is shown as the cross section structure signal of step 6) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Figure 11 to Figure 13 is shown as the section knot of step 7) resulting structures in the preparation method of touch screen provided by the invention
Structure schematic diagram.
Figure 14 is shown as the cross section structure signal of step 8) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Figure 15 is shown as the cross section structure signal of step 9) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Figure 16 is shown as the cross section structure signal of step 10) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Figure 17 is shown as the cross section structure signal of step 11) resulting structures in the preparation method of touch screen provided by the invention
Figure.
Component label instructions
10 flexible overlapping structures
101 flexible substrates
102 flexible material layers
11 groove structures
12 printing work platforms
13 electrocondution slurries
14 scrapers
2 printing work platforms
3 soft cushionings
4 driving layer structure
41 first flexible overlapping structures
411 first flexible substrates
412 first flexible material layers
413 first groove structures
42 slurries
43 first seed layers
44 first metal grills
441 first metal wires
5 blade coating tools
6 first optical adhesive layers
7 inductive layer structures
71 second flexible overlapping structures
711 second flexible substrates
712 second flexible material layers
713 second groove structures
72 second of sublayer
73 second metal grills
731 second metal wires
81 second transparent optical glue-lines
82 cover transparent sheets
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Please refer to Fig. 2~Figure 17.It should be noted that diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of invention, though only show in diagram with related component in the present invention rather than package count when according to actual implementation
Mesh, shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its
Assembly layout kenel may also be increasingly complex.
Referring to Fig. 2, the preparation method of the touch screen includes step the present embodiment provides a kind of preparation method of touch screen
It is rapid:
1) printing work platform is provided, the upper surface of the printing work platform is provided with soft cushioning；
2) the first flexible overlapping structure is arranged in the upper surface of Yu Suoshu soft cushioning, and the first flexible overlapping structure includes the
One flexible substrates and the first flexible material layer, first flexible substrates are located at the upper surface of the soft cushioning, and described first is soft
Property material layer is located at the upper surface of first flexible substrates, and the upper surface of first flexible material layer is formed with multiple first
Groove structure；
3) slurry is placed in the upper surface of first flexible material layer；The slurry is scraped using blade coating tool
It applies, so that the filled therewith is in forming the first seed layer in each first groove structure；
4) based on first seed layer in forming the first metal wire, first metal wire in first groove structure
It is interconnected to form the first metal grill；The first flexible overlapping structure, first seed layer and first metal mesh
Lattice collectively form driving layer structure；
5) the first transparent optical glue-line is formed in the upper surface of the driving layer structure；
6) the second flexible overlapping structure is arranged in the upper surface of Yu Suoshu soft cushioning, and the second flexible overlapping structure includes the
Two flexible substrates and the second flexible material layer, second flexible substrates are located at the upper surface of the soft cushioning, and described second is soft
Property material layer is located at the upper surface of second flexible substrates, and the upper surface of second flexible material layer is formed with multiple second
Groove structure；
7) slurry is placed in the upper surface of second flexible material layer, the slurry is carried out using the blade coating tool
Blade coating, so that the filled therewith is in forming second of sublayer in each second groove structure；
8) based on second of sublayer in forming the second metal wire, second metal in each second groove structure
Line is interconnected to form the second metal grill；The second flexible overlapping structure, second of sublayer and second metal
Grid collectively forms inductive layer structure；
9) the inductive layer structure is adhered on to the upper surface of the first transparent optical glue-line；
10) upper surface of Yu Suoshu inductive layer structure forms the second transparent optical glue-line；
11) cover transparent sheet is provided, the cover transparent sheet is adhered on to the upper surface of the second transparent optical glue-line.
In step 1), S1 step and Fig. 3 in Fig. 2 are please referred to, printing work platform 2 is provided, the printing work is flat
The upper surface of platform 2 is provided with soft cushioning 3.
As an example, the printing work platform 2 may include working metal platform, specifically, the printing work is flat
Platform 2 may include aluminium workbench, stainless steel workbench or aluminium alloy workbench etc..
As an example, the upper surface of the printing platform 2 is not absolutely smooth, i.e., the upper surface of the described printing platform 2
Flatness can be bad, that is, the upper surface part subregion of the printing platform 2 could be formed with pit (not shown) or protrusion
Structure.
As an example, the cushion 3 can by but be not limited only to barbola work and be pasted on the printing work platform 2
Upper surface.
As an example, the soft cushioning 3 may include liner of Shao A hardness between 30 degree~80 degree.It needs to illustrate
, described herein refers to " between 30 degree~80 degree " including all numerical value between 30 degree, 80 degree and 30 degree~80 degree
Numberical range, i.e., described herein refers to the numberical range including endpoint " between 30 degree~80 degree ".
As an example, the soft cushioning 3 may include rubber pad, blanket, silicagel pad or silicone rubber pad etc..
As an example, the thickness of the soft cushioning 3 can be set according to actual needs, it is preferable that in the present embodiment,
The thickness of the soft cushioning 3 may include 0.5 millimeter (mm)~10 millimeter.
Step 2), please refers to S2 step and Fig. 4 in Fig. 2, and the first flexible overlapping is arranged in the upper surface of Yu Suoshu soft cushioning 3
Structure 41, the first flexible overlapping structure 41 include the first flexible substrates 411 and the first flexible material layer 412, described first
Flexible substrates 411 are located at the upper surface of the soft cushioning 3, and first flexible material layer 412 is located at first flexible substrates
411 upper surface, the upper surface of first flexible material layer 412 are formed with multiple first groove structures 413.
As an example, first groove structure 413 can be formed in first flexible material layer using imprint process
412 upper surface.
As an example, first flexible substrates 411 may include but be not limited only to polyethylene terephthalate
(PET) substrate, polyimides (PI) substrate, polycarbonate (PC) substrate or polymethyl methacrylate (PMMA) substrate.
As an example, first flexible material layer 412 may include photoresist layer or UV (ultraviolet light) resin layer.It needs
Illustrate, the UV resin layer is also known as photosensitive resin layer, UV-cured resin layer, it can be used as paint, coating, oil
The sizing material of ink etc. uses.UV is the abbreviation of English Ultraviolet Rays, i.e. ultraviolet light.Ultraviolet light be it is invisible,
It is one section of electromagnetic radiation other than visible light, range of the wavelength in 10nm~400nm.The principle of solidification of the UV resin layer is institute
It states after the photoinitiator (or photosensitizer) in UV resin absorbs ultraviolet light under ultraviolet irradiation and generates living radical or sun
Ion causes monomer polymerization, is crosslinked and connects branch chemical reaction, so that the UV resin layer is converted into admittedly within the several seconds by liquid
State.
As an example, the width and depth of first groove structure 413 can be set according to actual needs, preferably
Ground, the depth of first groove structure 413 may include 1 micron~20 microns, and the width of first groove structure 413 can
To include 1 micron~10 microns.
As an example, each first groove structure 413 can be interconnected into it is latticed, specifically, described first is recessed
Slot structure 413 can be interconnected, and rectangular latticed, rhombus net trellis, network of triangle trellis, pentagon be latticed or six sides
Shape is latticed etc..
As an example, forming the same of first groove structure 413 in the upper surface of first flexible material layer 412
When, the upper surface of the first flexible material layer of Yu Suoshu 412 forms first lead groove (not shown), the first lead groove with
First groove structure 413 is connected.Specifically, first lead groove one end and 413 phase of the first groove structure
Connection, the other end extends to the side of first flexible material layer 412, by first groove structure 413 from described the
It draws one flexible material layer 712 at least side.
In step 3), the S3 step and Fig. 5 to Fig. 7 in Fig. 2 are please referred to, slurry 42 is placed in first flexible material
The upper surface of layer 412；The slurry 42 is scratched using blade coating tool 5 so that the slurry 42 be filled in it is each described
The first seed layer 43 is formed in first groove structure 413.
As an example, the slurry 42 can be dripped to the upper surface for being placed in first flexible material layer 412.
As an example, the slurry 42 may include electrocondution slurry, specifically, in the present embodiment, the slurry 42 includes
Seed ink；The specific ingredient of the seed ink can be selected as needed by those skilled in the art, not done herein
It limits.Certainly, in other examples, the slurry 42 can also include copper slurry, silver paste or can be by the silver bromide of photo-reduction
Slurry.
As an example, the slurry 42 can drip any position for being placed in 412 upper surface of the first flexible material layer,
Preferably, in the present embodiment, the slurry 42, which can drip, is placed in multiple first groove structure, 413 sides, in order to subsequent
It can be scratched from a laterally opposed other side of the upper surface of first flexible material layer 412 when blade coating.
As an example, the blade coating tool 5 may include but be not limited only to scraper；The structure of the scraper is this field skill
Art personnel are known that this is not repeated.
As an example, the blade coating tool 5 is in knifing process with upper compared to first flexible material layer 412
The posture that surface is tilted a certain angle scratches the slurry 42, it is preferable that in the present embodiment, the blade coating tool 5 with
The angle of the upper surface of first flexible material layer 412 can be configured according to actual needs, it is preferable that the present embodiment
In, the blade coating tool 5 and the angle of the upper surface of first flexible material layer 412 may include 30 °~70 °, more excellent
Selection of land, in the present embodiment, the blade coating tool 5 and the angle of the upper surface of first flexible material layer 412 may include 60 °
~70 °.
As an example, in the step, when being scratched using the blade coating tool 5 to the slurry 42, the blade coating
Tool 5 applies preset pressure to first flexible material layer 412, it is preferable that in the present embodiment, scrapes described in knifing process
Painting tool 5 to the blade coating pressure that first flexible material layer 412 applies may include 4 Kgfs it is every square centimeter~6 kilograms
Power is every square centimeter.
As an example, the speed that the blade coating tool 5 scratches can be set according to actual needs in knifing process,
Preferably, using the blade coating speed that the blade coating tool 5 scratches the slurry 42 may include 50 millimeters it is per second~260
Millimeter is per second, it is further preferable that the blade coating scratched using the blade coating tool 5 to the slurry 42 is fast in the present embodiment
Degree may include 160 millimeters it is per second~260 millimeters it is per second.
The first flexible overlapping structure 41 is placed in the upper of the printing work platform 2 for being provided with the soft cushioning 3
Surface carries out the blade coating of the slurry 42, due to the presence of the soft cushioning 3, is carrying out the slurry using the blade coating tool 5
When the blade coating of material 42, under the action of scratching pressure, the soft cushioning 3 can absorb the local out-of-flatness of the printing work platform 2
Factor, to avoid the slurry 42 in the residual on 412 surface of the first flexible material layer, it is ensured that in blade coating after the completion of institute
The cleannes for stating the upper surface of the first flexible material layer 412 do not need additional cleaning step to first flexible material layer
412 upper surface is cleaned, to simplify process flow, reduces production cost.
As an example, further including by institute by the slurry 42 blade coating to after being filled in each first groove structure 413
State the step of slurry 42 is solidified.Specifically, the slurry 42 can be dried when the slurry 42 is seed ink
It bakes so that the slurry 42 is solidified to form first seed layer 43, as shown in Figure 7.
As an example, while the slurry 42 blade coating is filled in each first groove structure 413, by the slurry
42 blade coating of material is filled in the first lead groove, i.e., described first seed layer 43 is formed simultaneously in first groove structure
In 413 and in the first lead groove.
In step 4), S4 step and Fig. 8 in Fig. 2 are please referred to, it is recessed in described first based on first seed layer 43
The first metal wire 441 is formed in slot structure 413, first metal wire 441 is interconnected to form the first metal grill 44；It is described
First flexible overlapping structure 41, first seed layer 43 and first metal grill 44 collectively form driving layer structure 4.
As an example, can be led using electroplating technology or chemical plating process in being formed in each first groove structure 413
Electric material is as first metal wire 441.
As an example, the sum of first metal wire 441 and the thickness of first seed layer 43 are less than or equal to described the
The depth of one groove structure 413, it is preferable that in the present embodiment, the thickness of first metal wire 441 and first seed layer 43
The sum of degree is equal to the depth of first groove structure 413, i.e., during forming the first metal wire 441, using electricity
Depositing process or chemical plating process are in filling the conductive material until the conductive material is filled out in each first groove structure 413
Until full first groove structure 413.
As an example, the width of first metal wire 441 can be of same size with first groove structure 413,
The width of i.e. described first metal wire 441 can be 1 micron~10 microns.
As an example, the material of first metal wire 441 may include but be not limited only to copper, i.e., described first metal wire
441 may include but be not limited only to copper metal line.
As an example, first metal grill 44 may include rectangular metal grid, diamond-type metal grid, triangle gold
Belong to grid, pentagon metal grill or hexagonal metallic grid etc..
As an example, while forming the first metal wire 441 in first groove structure 413, Yu Suoshu
First lead (not shown) is formed in one lead groove, the first lead is connected with first metal wire 441.Specifically
, described first lead one end is connected with first metal wire 441, and the other end extends to first flexible material layer
412 side draws first metal wire 441 from first flexible material layer 412 at least side.
In step 5), S5 step and Fig. 9 in Fig. 2 are please referred to, forms first in the upper surface of the driving layer structure 4
Transparent optical glue-line 6.
As an example, can use but be not limited only to spin coating proceeding formed in the upper surface of the driving layer structure 4 it is described
First transparent optical glue-line 6, specifically, all first transparent optical glue-lines 6 are formed in first flexible material layer 412 and institute
State the upper surface of the first metal grill 44.
As an example, the first transparent optical glue-line 6 may include but be not limited only to OCA (Optically Clear
Adhesive) optical adhesive layer.
As an example, the first transparent optical glue-line 6 can cover the entire upper surface of the driving layer structure 4.
In step 6), S6 step and Figure 10 in Fig. 2 are please referred to, the upper surface setting second of Yu Suoshu soft cushioning 3 is soft
Property laminated construction 71, the second flexible overlapping structure 71 include the second flexible substrates 711 and the second flexible material layer 712, institute
The upper surface that the second flexible substrates 711 are located at the soft cushioning 3 is stated, it is soft that second flexible material layer 712 is located at described second
The upper surface of property substrate 711, the upper surface of second flexible material layer 712 is formed with multiple second groove structures 713.
As an example, second groove structure 713 can be formed in second flexible material layer using imprint process
712 upper surface.
As an example, second flexible substrates 711 may include but be not limited only to polyethylene terephthalate
(PET) substrate, polyimides (PI) substrate, polycarbonate (PC) substrate or polymethyl methacrylate (PMMA) substrate.
As an example, second flexible material layer 712 may include photoresist layer or UV (ultraviolet light) resin layer.It needs
Illustrate, the UV resin layer is also known as photosensitive resin layer, UV-cured resin layer, it can be used as paint, coating, oil
The sizing material of ink etc. uses.UV is the abbreviation of English Ultraviolet Rays, i.e. ultraviolet light.Ultraviolet light be it is invisible,
It is one section of electromagnetic radiation other than visible light, range of the wavelength in 10nm~400nm.The principle of solidification of the UV resin layer is institute
It states after the photoinitiator (or photosensitizer) in UV resin absorbs ultraviolet light under ultraviolet irradiation and generates living radical or sun
Ion causes monomer polymerization, is crosslinked and connects branch chemical reaction, so that the UV resin layer is converted into admittedly within the several seconds by liquid
State.
As an example, the width and depth of second groove structure 713 can be set according to actual needs, preferably
Ground, the depth of second groove structure 713 may include 1 micron~20 microns, and the width of second groove structure 713 can
To include 1 micron~10 microns.
As an example, each second groove structure 713 can be interconnected into it is latticed, specifically, described second is recessed
Slot structure 713 can be interconnected, and rectangular latticed, rhombus net trellis, network of triangle trellis, pentagon be latticed or six sides
Shape is latticed etc..
As an example, forming the same of second groove structure 713 in the upper surface of second flexible material layer 712
When, the upper surface of the second flexible material layer of Yu Suoshu 712 forms the second lead groove (not shown), the second lead groove with
Second groove structure 713 is connected.Specifically, described second lead groove one end and 713 phase of the second groove structure
Connection, the other end extends to the side of second flexible material layer 712, by second groove structure 713 from described the
It draws two flexible material layers 712 at least side.
In step 7), the S7 step and Figure 11 to Figure 13 in Fig. 2 are please referred to, slurry 42 is placed in the described second flexible material
The upper surface of the bed of material 712 scratches the slurry 42 using the blade coating tool 5, so that the slurry 42 is filled in
Second of sublayer 72 is formed in each second groove structure 713.
As an example, the slurry 42 can be dripped to the upper surface for being placed in second flexible material layer 712.
As an example, the slurry 42 can drip any position for being placed in the upper surface of second flexible material layer 712
Place, it is preferable that in the present embodiment, the slurry 42 can drip the side for being placed in multiple second groove structures 713, in order to
It can be scratched from a laterally opposed other side of the upper surface of second flexible material layer 712 when subsequent blade coating.
As an example, the blade coating tool 5 is in knifing process with upper compared to second flexible material layer 712
The posture that surface is tilted a certain angle scratches the slurry 42, it is preferable that in the present embodiment, the blade coating tool 5 with
The angle of the upper surface of second flexible material layer 712 can be configured according to actual needs, it is preferable that the present embodiment
In, the blade coating tool 5 and the angle of the upper surface of second flexible material layer 712 may include 30 °~70 °, more excellent
Selection of land, in the present embodiment, the blade coating tool 5 and the angle of the upper surface of second flexible material layer 712 may include 60 °
~70 °.
As an example, in the step, when being scratched using the blade coating tool 5 to the slurry 42, the blade coating
Tool 5 applies preset pressure to second flexible material layer 712, it is preferable that in the present embodiment, scrapes described in knifing process
Painting tool 5 to the blade coating pressure that second flexible material layer 712 applies may include 4 Kgfs it is every square centimeter~6 kilograms
Power is every square centimeter.
As an example, the speed that the blade coating tool 5 scratches can be set according to actual needs in knifing process,
Preferably, using the blade coating speed that the blade coating tool 5 scratches the slurry 42 may include 50 millimeters it is per second~260
Millimeter is per second, it is further preferable that the blade coating scratched using the blade coating tool 5 to the slurry 42 is fast in the present embodiment
Degree may include 160 millimeters it is per second~260 millimeters it is per second.
The second flexible overlapping structure 71 is placed in the upper of the printing work platform 2 for being provided with the soft cushioning 3
Surface carries out the blade coating of the slurry 42, due to the presence of the soft cushioning 3, is carrying out the slurry using the blade coating tool 5
When the blade coating of material 42, under the action of scratching pressure, the soft cushioning 3 can absorb the local out-of-flatness of the printing work platform 2
Factor, to avoid the slurry 42 in the residual on 712 surface of the second flexible material layer, it is ensured that in blade coating after the completion of institute
The cleannes for stating the upper surface of the second flexible material layer 712 do not need additional cleaning step to second flexible material layer
712 upper surface is cleaned, to simplify process flow, reduces production cost.
As an example, further including will be described by the slurry 42 blade coating to after being filled in each second slot structure 713
The step of slurry 42 is solidified.Specifically, the slurry 42 can be toasted when the slurry 42 is seed ink
So that the slurry 42 is solidified to form second of sublayer 72, as shown in figure 13.
As an example, while the slurry 42 blade coating is filled in each second groove structure 713, by the slurry
42 blade coating of material is filled in the second lead groove, i.e., described second of sublayer 72 is formed simultaneously in second groove structure
In 713 and in the second lead groove.
In step 8), S8 step and Figure 14 in Fig. 2 are please referred to, based on second of sublayer 72 in each described second
The second metal wire 731 is formed in groove structure 713, second metal wire 731 is interconnected to form the second metal grill 73；Institute
It states the second flexible overlapping structure 71, second of sublayer 72 and second metal grill 73 and collectively forms inductive layer structure 7.
As an example, can be led using electroplating technology or chemical plating process in being formed in each second groove structure 713
Electric material is as second metal wire 731.
As an example, the sum of second metal wire 731 and the thickness of second of sublayer 72 are less than or equal to described the
The depth of two groove structures 713, it is preferable that in the present embodiment, the thickness of second metal wire 731 and second of sublayer 72
The sum of degree is equal to the depth of second groove structure 713, i.e., during forming the second metal wire 731, using electricity
Depositing process or chemical plating process are in filling the conductive material until the conductive material is filled out in each second groove structure 713
Until full second groove structure 713.
As an example, the width of second metal wire 731 can be of same size with second groove structure 713,
The width of i.e. described second metal wire 731 can be 1 micron~10 microns.
As an example, the material of second metal wire 731 may include but be not limited only to copper, i.e., described second metal wire
731 may include but be not limited only to copper metal line.
As an example, second metal grill 73 may include rectangular metal grid, diamond-type metal grid, triangle gold
Belong to grid, pentagon metal grill or hexagonal metallic grid etc..
As an example, while forming the second metal wire 731 in second groove structure 713, Yu Suoshu
The second lead (not shown) is formed in two lead grooves, second lead is connected with second metal wire 731.Specifically
, second lead one end is connected with second metal wire 731, and the other end extends to second flexible material layer
712 side draws second metal wire 731 from second flexible material layer 712 at least side.
It should be noted that step 5) can also be interchangeable with step 6)~step 8) sequence, i.e., can also first hold
Existing the step 6)~step 8) of row, then existing step 5) is executed, also that is, the inductive layer structure 7 can also be prepared first, then
The first transparent optical glue-line 6 is formed in the upper surface of the driving layer structure 4.
In step 9), S9 step and Figure 15 in Fig. 2 are please referred to, the inductive layer structure 7 is adhered on described first
The upper surface of transparent optical glue-line 6.
As an example, the upper surface phase of the upper surface of second flexible substrates 711 and the first transparent optical glue-line 6
Contact.The inductive layer structure 7 is posted via the first transparent optical glue-line 6 to be fixed on the driving layer structure 4.
In step 10), S10 step and Figure 16 in Fig. 2 are please referred to, the upper surface of Yu Suoshu inductive layer structure 7 is formed
Second transparent optical glue-line 81.
As an example, can use but be not limited only to spin coating proceeding formed in the upper surface of the inductive layer structure 7 it is described
Second transparent optical glue-line 81, specifically, all second transparent optical glue-lines 81 be formed in second flexible material layer 712 and
The upper surface of second metal grill 73.
As an example, the second transparent optical glue-line 81 may include but be not limited only to OCA (Optically Clear
Adhesive) optical adhesive layer.
As an example, the second transparent optical glue-line 81 can cover the entire upper surface of the inductive layer structure 7.
In step 11), S11 step and Figure 17 in Fig. 2 are please referred to, cover transparent sheet 82 is provided, by the cover transparent sheet
82 adhere on the upper surface of the second transparent optical glue-line 81.
As an example, the cover transparent sheet 82 may include but be not limited only to glass cover-plate.The cover transparent sheet 82 via
Second optical adhesive layer 8 adheres in the inductive layer structure 7.
As an example, the second transparent optical glue-line 81 can be completely covered in the cover transparent sheet 82.
As an example, further including following steps after step 11):
12) flexible circuit board (FPC) (not shown) and processing chip (not shown) are provided；
13) by the flexible circuit board and first metal grill 44, second metal grill 73 and the processing
Chip is of coupled connections so that first metal grill 44 and second metal grill 73 via the flexible circuit board with
The processing chip electrical connection.
As an example, the specific structure of the flexible circuit board and the processing chip that provide in step 12) is ability
Field technique personnel are known, are not repeated herein.
As an example, first metal grill 44 is electrically connected via the first lead with the flexible circuit board, institute
It states the second metal grill 73 and is electrically connected via second lead with the flexible circuit board.
In conclusion the preparation method of touch screen of the invention, the preparation method of the touch screen is comprising steps of provide print
The upper surface of brush workbench, the printing work platform is provided with soft cushioning；It is arranged first in the upper surface of the soft cushioning
Flexible overlapping structure, the first flexible overlapping structure include the first flexible substrates and the first flexible material layer, and described first is soft
Property substrate is located at the upper surface of the soft cushioning, and first flexible material layer is located at the upper surface of first flexible substrates,
The upper surface of first flexible material layer is formed with multiple first groove structures；Slurry is placed in first flexible material layer
Upper surface；The slurry is scratched using blade coating tool, so that the filled therewith is in each first groove knot
The first seed layer is formed in structure；It is described based on first seed layer in forming the first metal wire in first groove structure
First metal wire is interconnected to form the first metal grill；The first flexible overlapping structure, first seed layer and described
First metal grill collectively forms driving layer structure；The first transparent optical glue-line is formed in the upper surface of the driving layer structure；
The second flexible overlapping structure is set in the upper surface of the soft cushioning, the second flexible overlapping structure includes the second flexible substrates
And second flexible material layer, second flexible substrates are located at the upper surface of the soft cushioning, second flexible material layer position
In the upper surface of second flexible substrates, the upper surface of second flexible material layer is formed with multiple second groove structures；
Slurry is placed in the upper surface of second flexible material layer, the slurry is scratched using the blade coating tool, so that
The filled therewith in forming second of sublayer in each second groove structure；Based on second of sublayer in each described
The second metal wire is formed in second groove structure, second metal wire is interconnected to form the second metal grill；Described second
Flexible overlapping structure, second of sublayer and second metal grill collectively form inductive layer structure；By the inductive layer
Structure adheres on the upper surface of the first transparent optical glue-line；The second transparent light is formed in the upper surface of the inductive layer structure
Learn glue-line；Cover transparent sheet is provided, the cover transparent sheet is adhered on to the upper surface of the second transparent optical glue-line.Of the invention
In the preparation method of touch screen, the first seed layer is being prepared and when second of sublayer, respectively by the first flexible overlapping structure and the
Two flexible overlapping structures are placed in the blade coating for being provided with the upper surface progress slurry of the printing work platform of soft cushioning, due to soft cushioning
Presence, using blade coating tool carry out slurry blade coating when, under the action of scratching pressure, soft cushioning can absorb printing work
The factor of platform part out-of-flatness, thus avoid slurry in the first flexible material layer and the residual of the second flexible material layer surface,
The cleannes for ensuring the upper surface of the first flexible material layer and the upper surface of the second flexible material layer after the completion of blade coating, do not need
Additional the step of precuring is carried out to slurry and to the upper surface of the first flexible material layer and the upper table of the second flexible material layer
The step of face is cleaned reduces production cost to simplify process flow.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (12)
1. a kind of preparation method of touch screen, which is characterized in that the preparation method of the touch screen comprising steps of
Printing work platform is provided, the upper surface of the printing work platform is provided with soft cushioning；
The first flexible overlapping structure is set in the upper surface of the soft cushioning, the first flexible overlapping structure includes first flexible
Substrate and the first flexible material layer, first flexible substrates are located at the upper surface of the soft cushioning, first flexible material
Layer is located at the upper surface of first flexible substrates, and the upper surface of first flexible material layer is formed with multiple first groove knots
Structure；
Slurry is placed in the upper surface of first flexible material layer；The slurry is scratched using blade coating tool, so that
The filled therewith in forming the first seed layer in each first groove structure；
It is mutually interconnected based on first seed layer in forming the first metal wire, first metal wire in first groove structure
It connects to form the first metal grill；The first flexible overlapping structure, first seed layer and first metal grill are common
Constitute driving layer structure；
The first transparent optical glue-line is formed in the upper surface of the driving layer structure；
The second flexible overlapping structure is set in the upper surface of the soft cushioning, the second flexible overlapping structure includes second flexible
Substrate and the second flexible material layer, second flexible substrates are located at the upper surface of the soft cushioning, second flexible material
Layer is located at the upper surface of second flexible substrates, and the upper surface of second flexible material layer is formed with multiple second groove knots
Structure；
Slurry is placed in the upper surface of second flexible material layer, the slurry is scratched using the blade coating tool,
So that the filled therewith is in forming second of sublayer in each second groove structure；
Based on second of sublayer in forming the second metal wire in each second groove structure, second metal wire is mutual
Connection forms the second metal grill；The second flexible overlapping structure, second of sublayer and second metal grill are total
With composition inductive layer structure；
The inductive layer structure is adhered on to the upper surface of the first transparent optical glue-line；
The second transparent optical glue-line is formed in the upper surface of the inductive layer structure；
Cover transparent sheet is provided, the cover transparent sheet is adhered on to the upper surface of the second transparent optical glue-line.
2. the preparation method of touch screen according to claim 1, it is characterised in that: the printing work platform includes metal
Workbench.
3. the preparation method of touch screen according to claim 1, it is characterised in that: the soft cushioning includes that Shao's A hardness is situated between
Liner between 30 degree~80 degree.
4. the preparation method of touch screen according to claim 3, it is characterised in that: the soft cushioning includes rubber pad, rubber
Pi Bu, silicagel pad or silicone rubber pad.
5. the preparation method of touch screen according to claim 1, it is characterised in that: the thickness of the soft cushioning includes 0.5
Millimeter~10 millimeters.
6. the preparation method of touch screen according to claim 1, it is characterised in that: to positioned at first flexible material
During the slurry of the upper surface of layer is scratched, the upper surface of the blade coating tool and first flexible material layer
Angle include 30 °~70 °, blade coating pressure include 4 Kgfs it is every square centimeter~6 Kgfs it is every square centimeter, scratch speed
Including 50 millimeters it is per second~260 millimeters it is per second；It is carried out in the slurry to the upper surface for being located at second flexible material layer
During blade coating, the angle of the upper surface of the blade coating tool and second flexible material layer includes 30 °~70 °, blade coating
Pressure include 4 Kgfs it is every square centimeter~6 Kgfs it is every square centimeter, blade coating speed include 50 millimeters it is per second~260 millimeters
It is per second.
7. the preparation method of touch screen according to claim 1, it is characterised in that: the slurry includes seed ink.
8. the preparation method of touch screen according to claim 1, it is characterised in that: by the filled therewith in described first
After in groove structure, the slurry is solidified to form first seed layer；By the filled therewith in described second
After in groove structure, the slurry is solidified to form second of sublayer.
9. the preparation method of touch screen according to claim 1, it is characterised in that: the deep packet of first groove structure
1 micron~20 microns are included, the width of first groove structure includes 1 micron~10 microns；First metal wire with it is described
The sum of thickness of first seed layer be less than or equal to first groove structure depth, the width of first metal wire with it is described
First groove structure it is of same size；The depth of second groove structure includes 1 micron~20 microns, the second groove knot
The width of structure includes 1 micron~10 microns；The sum of second metal wire and the thickness of second of sublayer are less than or equal to institute
The depth of the second groove structure is stated, the width of second metal wire is of same size with second groove structure.
10. the preparation method of touch screen according to claim 1, it is characterised in that: first transparent optical cement includes
OCA optical cement, second transparent optical cement include OCA optical cement, and the cover transparent sheet includes transparent glass.
11. the preparation method of touch screen according to any one of claim 1 to 10, which is characterized in that
While the upper surface of first flexible material layer forms first groove structure, the first flexible material of Yu Suoshu
The upper surface of layer forms first lead groove, and the first lead groove is connected with first groove structure；Described first
Seed layer is formed simultaneously in first groove structure and in the first lead groove；In shape in first groove structure
While at first metal wire, first lead is formed in Yu Suoshu first lead groove, the first lead and described the
One metal wire is connected；
While the upper surface of second flexible material layer forms second groove structure, the second flexible material of Yu Suoshu
The upper surface of layer forms the second lead groove, and the second lead groove is connected with second groove structure；Described second
Seed layer is formed simultaneously in second groove structure and in the second lead groove；In shape in second groove structure
While at second metal wire, the second lead is formed in the second lead of Yu Suoshu groove, second lead and described the
Two metal wires are connected.
12. the preparation method of touch screen according to claim 11, which is characterized in that the cover transparent sheet is adhered on institute
Stating behind the upper surface of the second transparent optical glue-line further includes following steps:
Flexible circuit board and processing chip are provided；
The flexible circuit board is coupled into company with first metal grill, second metal grill and the processing chip
It connects, so that first metal grill and second metal grill are via the flexible circuit board and processing chip electricity
Connection.
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|---|---|---|---|
| CN201910168607.3A CN110045865A (en) | 2019-03-06 | 2019-03-06 | The preparation method of touch screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910168607.3A CN110045865A (en) | 2019-03-06 | 2019-03-06 | The preparation method of touch screen |
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| WO2014153898A1 (en) * | 2013-03-28 | 2014-10-02 | 南昌欧菲光科技有限公司 | Transparent conducting film and preparation method therefor |
| CN107466489A (en) * | 2016-03-14 | 2017-12-12 | 深圳崇达多层线路板有限公司 | The preparation method of metal substrate |
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| US20090046362A1 (en) * | 2007-04-10 | 2009-02-19 | Lingjie Jay Guo | Roll to roll nanoimprint lithography |
| CN102903423A (en) * | 2012-10-25 | 2013-01-30 | 南昌欧菲光科技有限公司 | Conduction structure in transparent conduction film, transparent conduction film and manufacture method thereof |
| CN103009788A (en) * | 2013-01-05 | 2013-04-03 | 上海卓凯电子科技有限公司 | Carbon ink printing device |
| WO2014121586A1 (en) * | 2013-02-06 | 2014-08-14 | 南昌欧菲光科技有限公司 | Electrically-conductive film, manufacturing method therefor, and touch screen using the electrically-conductive film |
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