CN104461188A - Method for preparing capacitive touch screen bridging structure - Google Patents
Method for preparing capacitive touch screen bridging structure Download PDFInfo
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- CN104461188A CN104461188A CN201410237617.5A CN201410237617A CN104461188A CN 104461188 A CN104461188 A CN 104461188A CN 201410237617 A CN201410237617 A CN 201410237617A CN 104461188 A CN104461188 A CN 104461188A
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- touch screen
- bridging structure
- capacitance touch
- conductive electrode
- transparency conductive
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The invention relates to a method for preparing a capacitive touch screen bridging structure. The method includes the following steps that firstly, transparent conductive electrode wires in the first direction and the second direction are prepared; secondly, a three-dimensional digital model for generating insulating layers and conductive bridges of the capacitive touch screen bridging structure is designed; thirdly, approximate treatment is conducted on the three-dimensional digital model, an irregular free-form surface is eliminated, and the three-dimensional digital model is converted into an STL format; fourthly, the three-dimensional digital model of the insulating layers and the conductive bridges is sliced into layers; fifthly, 3D printing is adopted, and the insulating layers are laminated and formed; sixthly, the conductive bridges are laminated and formed on each insulating layer through 3D printing, and then the required capacitive touch screen bridging structure is formed. 3D printing is adopted for manufacturing the capacitive touch screen bridging structure, the problem that the yield is easily decreased due to multiple complex procedures such as exposure, developing and etching of a traditional process is effectively solved, and manufacturing flexibility is high.
Description
Technical field
The present invention relates to touch screen display technologies field, particularly relate to a kind of preparation method of capacitance touch screen bridging structure.
Background technology
Touch technology namely not by button but direct finger or the screen function icon of a touch control device operate.Excellent man-machine interface and portable complete new experience is relied on to make whole industry fast-developing.Current touch technology kind is a lot, and wherein the capacitive touch-control multiple advantages such as high and reaction velocity is fast with reliability are in the industry cycle quite paid attention to.But in the preparation of traditional capacitance touch screen bridging structure I TO structure, no matter the ITO of single-surface double-layer structure or bilateral structure, it manufactures and mostly adopts the technology such as multistep photoetching and plated film, and photoetching technique and coating technique have the shortcoming of complex process, multistep photoetching, development, etching process not only need cost plenty of time, human and material resources, financial resources, greatly increase its cost of manufacture, the easy structure to previous step causes damage and pollution simultaneously, causes yield to decline.Meanwhile, also there is a large amount of raw-material wastes, cause cost compare high, therefore, have needs to go to search the comparatively simple technology of preparing of a kind of process.
3D prints (3D printing), i.e. the continuity of rapid shaping technique and development, and it is a kind of based on digital technology, uses powdery metal or plastics etc. can jointing material, is constructed the technology of three-dimensional body by the mode successively printed.Nowadays, new material emerges in an endless stream, particularly photoelectron material, biomedical material and space material, composition, the performance of these materials and come in every shape, and the complex structure of the device utilizing these new materials to form, and often relates to meticulous feature structure.Therefore, utilize 3D printing technique can serve the needs of new material better, meanwhile, it not only reduces the complicacy of technique, increases product yield, but also has greatly saved material loss.
For problems such as current I TO structure generation process complexity, the present invention prints in conjunction with 3D, proposes a kind of method for making of capacitance touch screen bridging structure.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, combine the advantage that 3D prints, a kind of preparation method of capacitance touch screen bridging structure is provided.
Technical program of the present invention lies in:
A method for making for capacitance touch screen bridging structure, is characterized in that, carries out as follows:
S1: the transparency conductive electrode line preparing first direction and second direction, the transparency conductive electrode line of described first direction and second direction interrupts in intersection, not conducting;
S2: design generates the three-dimensional digital model of capacitance touch screen bridging structure insulating layer and conducting bridge;
S3: carry out approximate processing to three-dimensional digital model, eliminates irregular free form surface, three-dimensional model is converted into the STL form that 3 D-printing function accepts and operates simultaneously;
S4: hierarchy slicing is carried out to insulation course and conducting bridge three-dimensional digital model, shape is that a series of two dimension prints sublayer;
S5: adopt 3D to print, in the transparency conductive electrode line interruptions of first direction and second direction, carries out layered manufacturing to insulation course shaping;
S6: adopt 3D to be printed on each insulation course carries out layered manufacturing to conducting bridge shaping, form required capacitance touch screen bridging structure.
Wherein, the transparency conductive electrode of described first direction and second direction and conducting bridge material comprise tin indium oxide, aluminium-doped zinc oxide, Graphene, carbon nano-tube, organic conductive material, metal nanometer line, metal grill.
The method for making of a kind of capacitance touch screen bridging structure according to claim 1, it is characterized in that: the transparency conductive electrode of described first direction and second direction adopts vacuum coating, serigraphy, spraying, spin coating to deposit the bright conductive material in Zheng Mian road on a planar base, then adopts photoetching method to form described first direction and second direction transparency conductive electrode pattern; Or the mask plate with first direction and second direction transparency conductive electrode pattern is set in plane, then adopt vacuum coating, spray on a planar base directly formation first direction and second direction transparency conductive electrode pattern; Or adopt inkjet printing directly to form first direction and second direction transparency conductive electrode pattern on a planar base.
Described 3D prints solid shaping, the selective laser sintering of the cubic light comprising photochromics, it is shaping to melt extrude, three-dimensional spray-painting prints.
Adopt array shower nozzle to print the array bridging structure of described capacitance touch screen simultaneously.
First printed insulation course, then print conducting bridge; Or insulation course and conducting bridge one in front and one in back print simultaneously.
Print a touch-screen or multiple touch-screen array on the same substrate, described multiple touch-screen array adopts the mode of cutting to be separated.
The invention has the advantages that:
The present invention adopts lamination 3D manufacture to prepare the bridging structure of capacitance touch screen bridging structure, make technique comparatively classic method greatly simplify, save the multiple tracks complicated technologies such as traditional handicraft exposure, development, etching, save raw materials for production and manufacturing cost.
Accompanying drawing explanation
Fig. 1 is a kind of schematic flow sheet printing the method for making of capacitance touch screen bridging structure based on 3D.
Fig. 2 is the ITO pattern schematic diagram of capacitance touch screen bridging structure.
Fig. 3 is for adopting array nozzle printing capacitance touch screen bridging structural insulation material schematic diagram.
Fig. 4 is the single bridge schematic diagram of insulating material of capacitance touch screen bridging structure.
Fig. 5 is the schematic diagram adopting array nozzle printing capacitance touch screen bridging structural conductive bridge.
Fig. 6 is the single conducting bridge schematic diagram of capacitance touch screen bridging structure.
In accompanying drawing, main element description of symbols is as follows:
01---ITO structure electrode; 02---insulating material; 03---bridging metal.
Embodiment
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, is described in detail below by reference to the accompanying drawings.
Below will be described in further detail the present invention by specific embodiment.
The present invention relates to a kind of method for making printing capacitance touch screen bridging structure based on 3D, the ITO structure panel construction of described capacitance touch screen bridging structure can be one side or two-sided, also can be as or double-decker, carry out as follows:
S1: the transparency conductive electrode line preparing first direction and second direction, the transparency conductive electrode line of described first direction and second direction interrupts in intersection, not conducting;
S2: design generates the three-dimensional digital model of capacitance touch screen bridging structure insulating layer and conducting bridge;
S3: carry out approximate processing to three-dimensional digital model, eliminates irregular free form surface, three-dimensional model is converted into the STL form that 3 D-printing function accepts and operates simultaneously;
S4: hierarchy slicing is carried out to insulation course and conducting bridge three-dimensional digital model, shape is that a series of two dimension prints sublayer;
S5: adopt 3D to print, in the transparency conductive electrode line interruptions of first direction and second direction, carries out layered manufacturing to insulation course shaping;
S6: adopt 3D to be printed on each insulation course carries out layered manufacturing to conducting bridge shaping, form required capacitance touch screen bridging structure.
The transparency conductive electrode of above-mentioned first direction and second direction and conducting bridge material comprise tin indium oxide (ITO), aluminium-doped zinc oxide (AZO), Graphene, carbon nano-tube, organic conductive material, metal nanometer line, metal grill.
The transparency conductive electrode of above-mentioned first direction and second direction can adopt vacuum coating, serigraphy, spraying, spin coating to deposit the bright conductive material in Zheng Mian road on a planar base, then adopts photoetching method to form described first direction and second direction transparency conductive electrode pattern; Also the mask plate with first direction and second direction transparency conductive electrode pattern can be set in plane, then adopt vacuum coating, spray on a planar base directly formation first direction and second direction transparency conductive electrode pattern; Also inkjet printing can be adopted directly to form first direction and second direction transparency conductive electrode pattern on a planar base.
Above-mentioned 3D manufactures solid shaping, the selective laser sintering of the cubic light comprising photochromics, it is shaping to melt extrude, three-dimensional spray-painting prints.
Array shower nozzle can be adopted simultaneously to print the array bridging structure of described capacitance touch screen, improve make efficiency.
Can first printed insulation course, then print conducting bridge; Also can insulation course and conducting bridge one in front and one in back print simultaneously.
Print a touch-screen or multiple touch-screen array on the same substrate, described multiple touch-screen array adopts the mode of cutting to be separated.
In order to represent the clear thickness being exaggerated layer and region, but should not be considered to as schematic diagram the proportionate relationship strictly reflecting physical dimension.Reference diagram is the schematic diagram of idealized embodiments of the present invention, and illustrated embodiment should not be considered to the given shape being only limitted to the region shown in figure, but comprises obtained shape (such as manufacturing the deviation caused).All represent with rectangle in the present embodiment, the expression in figure is schematic, but this should not be considered to limit the scope of the invention.
In order to allow those skilled in the art better understand the present invention, introduce a kind of method for making of capacitance touch screen bridging structure below by specific embodiment.
Embodiment one
Fig. 1 is a kind of schematic flow sheet printing the method for making of capacitance touch screen bridging structure based on 3D of the present invention.The present embodiment is for being single-surface double-layer structure when described capacitance touch screen bridging structure, and its concrete scheme comprises the following steps:
S1: the transparency conductive electrode line preparing first direction and second direction
Preferably, the transparency conductive electrode of first direction described in the present embodiment and second direction can adopt magnetron sputtering deposition whole ITO material, then adopts photoetching method to form described first direction and second direction transparency conductive electrode pattern.
Be placed in by glass substrate is Win-10: DI water=3 by volume: 97 cleaning fluids, the ultrasonic machine cleaning 15min utilizing frequency to be 32KHz, after spray 2min, being placed in volume ratio is again Win-41: DI water=5: 95 cleaning fluids, the ultrasonic machine cleaning 10min utilizing frequency to be 40KHz, after circulation tap water spray rinsing 2min, recycling frequency is that the ultrasonic machine of 28KHz cleans 10min in DI pure water, dries up be placed on that to be incubated more than 30min in 50 DEG C of cleaning ovens for subsequent use through nitrogen gun.
Get one piece of cleaned glass substrate, one side utilizes magnetically controlled sputter method to prepare one deck ITO conductive film wherein, spin coating proceeding is adopted evenly to apply one deck photoresist RZJ-304 on ITO conductive film, 110 DEG C of bakings, after 20 minutes, form the transparency conductive electrode pattern of first direction and second direction on conductive film through exposure-development; This glass substrate is placed in the aqueous solution etching liquid containing HNO3 and HCl; the ITO part exposed is etched, and is stayed by the ITO that photoresist is protected, after photoresist cleaning; the transparency conductive electrode pattern of final formation first direction and second direction, as shown in Figure 2.
S2: design generates the three-dimensional digital model of capacitance touch screen bridging structure insulating layer and conducting bridge;
The three-dimensional model of insulation course and conducting bridge, can adopt Three-dimensional CAD Software (as AUTO CAD, UG, Pro/Engineer, SolidWorks, Soliddedge) to set up, and preferably, the present embodiment adopts AUTO CAD software to carry out the foundation of three-dimensional model.
S3: carry out approximate processing to three-dimensional digital model, eliminates irregular free form surface, three-dimensional model is converted into the STL form of the acceptance of 3 D-printing function and operation simultaneously and carries out hierarchy slicing to three-dimensional digital model, and shape is that a series of two dimension prints sublayers
Before insulation course and conducting bridge are shaped, adopt STL to format processing mode, approximate processing is carried out to cad model, eliminates some irregular free form surfaces, then, three-dimensional model is converted into the STL form that 3 D-printing function accepts and operates; And then utilize RP-Tools software to set up three-dimensional model carry out layering be converted into a series of two dimension print sublayer, namely hierarchy slicing is carried out to cad model, vertical range between contiguous slices layer is shaping floor height, floor height is less, precision and the surface quality of Forming Workpiece are better, but curring time is longer.According to precision and the time-write interval of 3D printer, preferably, the present embodiment gets the printing sublayer that thickness is 0.1mm.Three-dimensional digital model is separated into a series of two-dimentional arc in order along Z-direction and prints sublayer, according to every layer of profile information, carry out process planning, Choice and process parameter, automatically generate the NC instruction of 3D printing device.
S4: adopt 3D to print, in the transparency conductive electrode line interruptions of first direction and second direction, carries out layered manufacturing to insulation course shaping
As shown in Figure 3 and Figure 5, preferably, the present embodiment adopts the array bridging structure of array shower nozzle to described capacitance touch screen to print, and improves make efficiency.It is shaping that the present embodiment adopts laser fast shaping equipment to carry out layered manufacturing to insulation course, and insulating layer material is the transparent photosensitive resin of WBSLA2820, and to arrange print temperature be 260 DEG C, and sweep velocity is 5m/s.As shown in Figure 4, forming machine manufactures series of layers sheet and automatically they is piled up, and forms insulation course in each interruptions of transparency conductive electrode line of first direction and second direction.
S5: adopt 3D to be printed on each insulation course carries out layered manufacturing to conducting bridge shaping, form required capacitance touch screen bridging structure
Preferably, the present embodiment adopts inkjet printing Graphene to prepare conducting bridge.
Graphene ink-manufacturing method is as follows: first, and 5g graphite flake is put into 100ml ethyl cellulose solution, and is placed in ultrasonic device ultrasonic 3 hours, and ultrasonic power is 100W, and frequency is 40KHz; Then be placed in supercentrifuge, under 7500rpm rotating speed centrifugal 10 minutes first time, take out the graphite flake do not reacted completely; Second time under 7500rpm rotating speed centrifugal 5 hours, takes out solvent wherein, leaves the graphene solution of high concentration, i.e. Graphene ink.
The Graphene ink of above-mentioned preparation is put into the feed cavity of 3D printing device, 3D printing device will manufacture a series of synusia according to three-dimensional digital model and automatically they be piled up, and form required electrode, as shown in Figure 6.
So far, the method for making of a kind of capacitance touch screen bridging of the present invention structure completes.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. a method for making for capacitance touch screen bridging structure, is characterized in that, carries out as follows:
S1: the transparency conductive electrode line preparing first direction and second direction, the transparency conductive electrode line of described first direction and second direction interrupts in intersection, not conducting;
S2: design generates the three-dimensional digital model of capacitance touch screen bridging structure insulating layer and conducting bridge;
S3: carry out approximate processing to three-dimensional digital model, eliminates irregular free form surface, three-dimensional model is converted into the STL form that 3 D-printing function accepts and operates simultaneously;
S4: hierarchy slicing is carried out to insulation course and conducting bridge three-dimensional digital model, shape is that a series of two dimension prints sublayer;
S5: adopt 3D to print, in the transparency conductive electrode line interruptions of first direction and second direction, carries out layered manufacturing to insulation course shaping;
S6: adopt 3D to be printed on each insulation course carries out layered manufacturing to conducting bridge shaping, form required capacitance touch screen bridging structure.
2. the method for making of a kind of capacitance touch screen bridging structure according to claim 1, is characterized in that: transparency conductive electrode and the conducting bridge material of described first direction and second direction comprise tin indium oxide, aluminium-doped zinc oxide, Graphene, carbon nano-tube, organic conductive material, metal nanometer line, metal grill.
3. the method for making of a kind of capacitance touch screen bridging structure according to claim 1, it is characterized in that: the transparency conductive electrode of described first direction and second direction adopts vacuum coating, serigraphy, spraying, spin coating to deposit the bright conductive material in Zheng Mian road on a planar base, then adopts photoetching method to form described first direction and second direction transparency conductive electrode pattern; Or the mask plate with first direction and second direction transparency conductive electrode pattern is set in plane, then adopt vacuum coating, spray on a planar base directly formation first direction and second direction transparency conductive electrode pattern; Or adopt inkjet printing directly to form first direction and second direction transparency conductive electrode pattern on a planar base.
4. the method for making of a kind of capacitance touch screen bridging structure according to claim 1, is characterized in that: described 3D prints solid shaping, the selective laser sintering of the cubic light comprising photochromics, it is shaping to melt extrude, three-dimensional spray-painting prints.
5. the method for making of described a kind of capacitance touch screen bridging structure according to claim 1, is characterized in that: adopt array shower nozzle to print the array bridging structure of described capacitance touch screen simultaneously.
6. the method for making of described a kind of capacitance touch screen bridging structure according to claim 1, is characterized in that: first printed insulation course, then prints conducting bridge; Or insulation course and conducting bridge one in front and one in back print simultaneously.
7. the method for making of a kind of capacitance touch screen bridging structure according to claim 1, is characterized in that: print a touch-screen or multiple touch-screen array on the same substrate, and described multiple touch-screen array adopts the mode of cutting to be separated.
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| CN201410237617.5A CN104461188B (en) | 2014-05-31 | 2014-05-31 | A kind of preparation method of capacitance touch screen bridging structure |
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| CN201410237617.5A CN104461188B (en) | 2014-05-31 | 2014-05-31 | A kind of preparation method of capacitance touch screen bridging structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105618739A (en) * | 2015-12-24 | 2016-06-01 | 中国电子科技集团公司第四十九研究所 | Fast manufacturing method for sensor sensitive core |
| CN109952189A (en) * | 2016-11-17 | 2019-06-28 | 奥博泰克有限公司 | Hybrid more material 3D printings |
| CN114995683A (en) * | 2022-08-04 | 2022-09-02 | 湖南兴威新材料有限公司 | Single-sided capacitive touch screen and manufacturing method thereof |
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| CN114995683A (en) * | 2022-08-04 | 2022-09-02 | 湖南兴威新材料有限公司 | Single-sided capacitive touch screen and manufacturing method thereof |
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| CN104461188B (en) | 2017-12-05 |
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