CN103235676B - The preparation method of capacitive touch screen for electronic whiteboard - Google Patents
The preparation method of capacitive touch screen for electronic whiteboard Download PDFInfo
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- CN103235676B CN103235676B CN201310212567.0A CN201310212567A CN103235676B CN 103235676 B CN103235676 B CN 103235676B CN 201310212567 A CN201310212567 A CN 201310212567A CN 103235676 B CN103235676 B CN 103235676B
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Abstract
The present invention discloses the preparation method of a kind of capacitive touch screen for electronic whiteboard, including processing substrate, prepared by mask plate, silk screen printing, solidification, lead-in wire assembling, detect and encapsulate several step, described substrate is transparent glass plate or opaque plastic plate, aluminium-plastic panel etc., compared with traditional capacitance touch screen, baseplate material is cheap and easy to get, low cost, and described silk screen printing directly uses mask plate to produce circuit pattern, more convenient than mask etch method, simple to operate, maloperation is few, the capacitance plate area prepared by the method for the present invention is big, low cost, disclosure satisfy that the demand of electronic whiteboard giant-screen.
Description
Technical field
The present invention relates to the preparation method of a kind of touch screen, the preparation method of a kind of capacitive touch screen for electronic whiteboard.
Background technology
Along with growing with each passing day of multimedia information inquiry, people use touch screen more and more, because touch screen is applicable not only to the national conditions of China's multimedia information inquiry, and touch screen has, and sturdy and durable, response speed is fast, save space, be prone to many advantages such as exchange.Utilize this technology, as long as we user touches the icon on computer display lightly with finger or word can be achieved with host service function, so that man-machine interaction is more convenient.
Electronic whiteboard, as a kind of emerging product, is the new high-tech product summarizing the research and development of multiple high-tech means such as sophisticated electronic technology, software engineering, it is possible to achieve non-support cable and teaching.The interactive white board of electronic whiteboard mainly has pressure sensitivity technology, infrared technology, ultrasonic technology and electromagnetic induction technology, and the interactive white board of these structures easily goes wrong, and safeguards high, uses the cycle shorter.Currently also occur in that capacitance touch screen as the electronic white board equipment of interactive white board, but current capacitance touch screen is all as substrate with expensive material, preparation technology is numerous and diverse, and area is the least, obtain large-area capacitance touch screen and be accomplished by bigger cost input, which limits capacitance touch screen application in the giant-screen equipment such as electronic whiteboard.
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, it is provided that the preparation method of a kind of capacitive touch screen for electronic whiteboard, and the method is simple to operate, and the capacitance touch screen area prepared is big, low cost.
For solving above-mentioned technical problem, the invention provides the preparation method of a kind of capacitive touch screen for electronic whiteboard, comprise the following steps:
(1) processing substrate: select area not less than 0.5 m2Substrate, after cleaning up be dried；
(2) prepared by mask plate: select the mask plate matched with substrate shape and size, etched features on mask plate；
(3) silk screen printing: cover one layer of silk screen on substrate, silk screen covers mask plate, brushing conductive material above mask plate, forms conductive layer, just can form circuit pattern with the figure corresponding position on mask plate on substrate；
(4) solidification: remove mask plate and silk screen, solidifies the substrate containing conductive layer；
(5) lead-in wire assembling: assembling lead-in wire on the substrate being cured；
(6) detection: the substrate assembled is detected；
(7) encapsulation: step (6) is detected qualified substrate encapsulating material and encapsulates.
Method described in step (3) can prepare monolayer circuit pattern, on substrate, i.e. directly print one layer of circuit pattern, when finger touches on the electrically conductive, due to human body electric field, user and touch screen surface are formed with a coupling electric capacity, for high frequency electric, electric capacity is direct conductor, then finger siphons away a electric current the least from contact point, this electric current divides the electrode from the corner of touch screen to flow out, and the distance of the electric current and finger to corner flowing through these four electrodes is directly proportional, controller is by the accurate calculating to these four current ratios, draw the position of touch point.
Method described in step (3) can also prepare odt circuit pattern, specifically after preparing monolayer circuit pattern, mask plate is removed, print a layer insulating on the electrically conductive, then utilize another mask plates or same mask plate to change an angle to be continuing with, one layer of circuit pattern of printing the most on the insulating layer, when finger touches on the electrically conductive, due to human body electric field, user and touch screen surface are formed with a coupling electric capacity, two-tier circuit pattern also forms electric capacity, then finger siphons away a electric current the least from contact point, this electric current divides the electrode from the corner of touch screen to flow out, and the distance of the electric current and finger to corner flowing through these four electrodes is directly proportional, controller is by the accurate calculating to these four current ratios, the position of touch point can also be drawn.
Owing to electronic whiteboard is to project on interactive white board by projector by the content of computer, therefore the substrate of the present invention can be transparent glass plate, can also be opaque metallic plate, plastic plate or aluminium-plastic panel, but glass plate, metallic plate, plastic plate and aluminium-plastic panel must be surfacings, smooth；
Mask plate only serves mask masking action, therefore can be the sheet materials such as glass plate, metallic plate, plastic plate or aluminium-plastic panel；Described conductive material is conducting metal, Graphene or graphite；Described insulant is SiO2Or epoxy resin.
Compared with the preparation method of conventional capacitive touchscreen, the method for the present invention is simple to operate, can prepare large-area capacitance touch screen；And the substrate selected by the present invention can be transparent glass substrate, it is also possible to be opaque metallic plate, plastic plate or aluminium-plastic panel etc., compared with conventional capacitive touchscreen, low cost.
In order to ensure the fineness of silk screen, step (3) described silk screen is at least 200 mesh.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment one
The preparation method of capacitive touch screen for electronic whiteboard, including step in detail below:
(1) processing substrate: select area not less than 0.5 m2Substrate, described substrate is ganoid glass plate, is dried after round brush cleans and ultrasonic cleaning is clean；
(2) prepared by mask plate: selecting the mask plate matched with substrate shape and size, described mask plate is plastic plate, etched features on mask plate, and described figure can be circle, rectangle, rhombus etc.；
(3) silk screen printing: cover one layer of silk screen on substrate, silk screen is 300 mesh, mask plate is covered on silk screen, brushing conductive material on mask plate, described conductive material is conducting metal, Graphene or graphite, forming conductive layer, thus can form circuit pattern with the figure corresponding position on mask plate on substrate, the shape of circuit pattern is circle, rectangle, rhombus etc.；
(4) solidification: remove mask plate and silk screen, by the substrate spontaneous curing containing conductive layer；
(5) lead-in wire assembling: assembling lead-in wire on the substrate being cured, lead-in wire is connected with electrode；
(6) detection: the substrate assembled is detected；
(7) encapsulation: step (6) detects qualified substrate encapsulating material encapsulation, and described encapsulating material is optical cement.
Wherein, solidify and the assembling that goes between can be implemented according to prior art.
Embodiment two
The preparation method of capacitive touch screen for electronic whiteboard, including step in detail below:
(1) processing substrate: select area more than 1 m2Substrate, described substrate is ganoid plastic plate, is dried after round brush cleans and ultrasonic cleaning is clean；
(2) prepared by mask plate: selecting the mask plate matched with substrate shape and size, described mask plate is plastic plate, etched features on mask plate, and described figure can be circle, rectangle, rhombus etc.；
(3) printing: covering one layer of silk screen on substrate, silk screen is 500 mesh, silk screen covers mask plate, brushing conductive material on mask plate, described conductive material is conducting metal, Graphene or graphite, forms conductive layer, thus can form circuit pattern with the figure corresponding position on mask plate on substrate, the shape of circuit pattern is circle, rectangle, rhombus etc., after solidification a period of time, remove mask plate, on the electrically conductive one layer of insulant of brushing, forming insulating barrier, insulant can be SiO2Or epoxy resin, after solidification a period of time, cover another mask plates, brushing conductive material on mask plate, form conductive layer, so, substrate just has bilayer conductive layer；
(4) solidification: remove mask plate and silk screen, by the substrate spontaneous curing containing conductive layer；
(5) lead-in wire assembling: assembling lead-in wire on the substrate being cured, lead-in wire is connected with electrode；
(6) detection: the substrate assembled is detected；
(7) encapsulation: step (6) detects qualified substrate encapsulating material encapsulation, and described encapsulating material is EVA(ethylene-vinyl acetate copolymer).
It should be noted that the detailed description of the invention of the above-mentioned simply present invention, the simple deformation done on this basis; as replaced printing with magnetron sputtering or vapour deposition method; obtain circuit pattern etc., also can realize the technique effect of the present invention, also should be regarded as protection scope of the present invention.
Claims (6)
1. the preparation method of capacitive touch screen for electronic whiteboard, it is characterised in that comprise the following steps:
(1) processing substrate: select area not less than 0.5 m2Substrate, after cleaning up be dried；
(2) prepared by mask plate: select the mask plate matched with substrate shape and size, etched features on mask plate；
(3) silk screen printing: cover one layer of silk screen on substrate, silk screen covers mask plate, brushing conductive material above mask plate, forms conductive layer, forms monolayer circuit pattern with the figure corresponding position on mask plate on substrate；
(4) solidification: remove mask plate and silk screen, solidifies the substrate containing conductive layer；
(5) lead-in wire assembling: assembling lead-in wire on the substrate being cured；
(6) detection: the substrate assembled is detected；
(7) encapsulation: step (6) is detected qualified substrate encapsulating material and encapsulates；
Mask plate, after preparing monolayer circuit pattern, is removed by step (3), on the electrically conductive one layer of insulant of printing, forms insulating barrier, is then covered by another mask plates, then one layer of conductive layer of printing on the insulating layer.
2. the preparation method of capacitive touch screen for electronic whiteboard as claimed in claim 1, it is characterised in that: described substrate is glass plate, metallic plate, plastic plate or aluminium-plastic panel.
3. the preparation method of capacitive touch screen for electronic whiteboard as claimed in claim 1, it is characterised in that: described mask plate is glass plate, metallic plate, plastic plate or aluminium-plastic panel.
4. the preparation method of capacitive touch screen for electronic whiteboard as claimed in claim 1, it is characterised in that: described conductive material is conducting metal, Graphene or graphite.
5. the preparation method of capacitive touch screen for electronic whiteboard as claimed in claim 1, it is characterised in that: described insulant is SiO2Or epoxy resin.
6. the preparation method of capacitive touch screen for electronic whiteboard as claimed in claim 1, it is characterised in that: step (3) described silk screen is at least 200 mesh.
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| CN201310212567.0A CN103235676B (en) | 2013-05-31 | 2013-05-31 | The preparation method of capacitive touch screen for electronic whiteboard |
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| CN201310212567.0A CN103235676B (en) | 2013-05-31 | 2013-05-31 | The preparation method of capacitive touch screen for electronic whiteboard |
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| CN103235676A CN103235676A (en) | 2013-08-07 |
| CN103235676B true CN103235676B (en) | 2016-12-28 |
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| CN104007885B (en) * | 2014-05-29 | 2018-05-08 | 四川点燃科技有限公司 | The manufacture method of projecting type capacitor touch-control blank and the projecting type capacitor touch-control blank |
| CN106155555A (en) * | 2016-07-07 | 2016-11-23 | 上海数虎图像科技有限公司 | A kind of interactive multimedia metope scribble system |
| CN112281302B (en) * | 2020-10-20 | 2022-09-09 | 西安工程大学 | Mask method electrostatic spinning integrated copper conductive film layer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156602A (en) * | 2011-05-26 | 2011-08-17 | 意力(广州)电子科技有限公司 | Process for producing conducting circuit of capacitive touch screen |
| CN102279684A (en) * | 2011-08-30 | 2011-12-14 | 深圳市豪威薄膜技术有限公司 | Method for manufacturing novel electrode lead capacitive screen, novel electrode lead capacitive screen and touch screen terminal |
| CN102830836A (en) * | 2012-07-27 | 2012-12-19 | 北京京东方光电科技有限公司 | Touch control panel and manufacturing method thereof as well as touch control equipment |
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| JP5720278B2 (en) * | 2011-02-07 | 2015-05-20 | ソニー株式会社 | Conductive element and manufacturing method thereof, information input device, display device, and electronic apparatus |
| CN102664154A (en) * | 2012-05-21 | 2012-09-12 | 上海交通大学 | Packaging method for metal oxide semiconductor thin-film transistor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156602A (en) * | 2011-05-26 | 2011-08-17 | 意力(广州)电子科技有限公司 | Process for producing conducting circuit of capacitive touch screen |
| CN102279684A (en) * | 2011-08-30 | 2011-12-14 | 深圳市豪威薄膜技术有限公司 | Method for manufacturing novel electrode lead capacitive screen, novel electrode lead capacitive screen and touch screen terminal |
| CN102830836A (en) * | 2012-07-27 | 2012-12-19 | 北京京东方光电科技有限公司 | Touch control panel and manufacturing method thereof as well as touch control equipment |
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