CN101587397B - Touch panel - Google Patents
Touch panel Download PDFInfo
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- CN101587397B CN101587397B CN2008103017403A CN200810301740A CN101587397B CN 101587397 B CN101587397 B CN 101587397B CN 2008103017403 A CN2008103017403 A CN 2008103017403A CN 200810301740 A CN200810301740 A CN 200810301740A CN 101587397 B CN101587397 B CN 101587397B
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- nano tube
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Abstract
The invention provides a touch panel, which comprises a first conducting substrate, and a second conducting substrate, wherein the first conducting substrate can be deformed when being touched; the second conducting substrate and the first conducting substrate are oppositely arranged; a plurality of carbon nanotube bundles are grown on the second conducting substrate; and the plurality of the carbon nanotube bundles extend from the second conducting substrate to the first conducting substrate to ensure the conduction between the second conducting substrate and the deformed first conducting substrate after being touched. The touch panel of the technical proposal has preferable performance.
Description
Technical field
The present invention relates to the touch technology field, relate in particular to a kind of contact panel.
Background technology
Along with making rapid progress of development in science and technology, sci-tech product account of human sexual factor comes development and Design to become trend gradually.Touch technology has obtained increasing application because of it is convenient to use mode at visitor's guide system, ATM, portable electronic product and industrial control system etc.
Contact panel (Touch Panel, Touch Screen) but be meant the screen of touch-control, it orients touch position through the touching that receives contacts such as finger or pointer, the instruction of reading touch position through controller again demonstrates required image.Contact panel mainly can be divided into kinds such as resistance-type, condenser type, ultrasonic formula and optical profile type according to its location technology.Electric resistance touch-control panel is made up of tin indium oxide mantle and indium oxide tin glass, is separated by resin balls between tin indium oxide mantle and the indium oxide tin glass.Can make the tin indium oxide mantle sink when finger or pointer touching tin indium oxide mantle, thus conducting tin indium oxide mantle and indium oxide tin glass.At this moment; Can on indium oxide tin glass, connect the 5V voltage field of the axial even gradual change of y; This time, the voltage of touch position was equal to the magnitude of voltage of tin indium oxide mantle, and the magnitude of voltage through obtaining the tin indium oxide mantle also relatively can obtain touch position at the axial coordinate of y with this magnitude of voltage and 5V.In like manner, on the tin indium oxide mantle, connect the 5V voltage field of the axial even gradual change of x, the magnitude of voltage through obtaining indium oxide tin glass also relatively can obtain touch position at the axial coordinate of x with this magnitude of voltage and 5V.So, can draw the coordinate of touch position, can position touch position.Capacitance type touch-control panel is made up of silicon dioxide cure process layer and indium oxide tin glass, sets up a uniform electric field on the indium oxide tin glass surface, and the faint induction current of human body positions electric field effects when utilizing touching.The zone line of acoustic wave contact panel has a uniform sound wave field of force, utilizes sound wave to run into the characteristic that soft medium can be absorbed energy and positions.Takeuchi, people such as M. the document " Ultrasonic attenuation inacoustic touch panels " that was published in 2004IEEE Ultrasonics Symposium in 2004 to the acoustic wave contact panel in hyperacoustic decay done research.Be provided with RF transmitter and infrared receiver around the optical touch control panel, thereby form the infrared ray that matrix form is arranged at the contact panel zone line, when utilizing contact touching contact panel to the ultrared coordinate of locating touch position that blocks.
More than various types of contact panels all be subject to breakage, promptly all have short serviceable life, and its resolution is generally not high yet.
Therefore, be necessary to provide a kind of contact panel of better performances.
Summary of the invention
Below will a kind of contact panel be described with embodiment.
A kind of contact panel; Comprise first electrically-conductive backing plate and second electrically-conductive backing plate; Said first electrically-conductive backing plate can produce distortion when being touched, and said second electrically-conductive backing plate and first electrically-conductive backing plate are oppositely arranged, and growth has a plurality of carbon nano tube bundles on said second electrically-conductive backing plate; Said a plurality of carbon nano tube bundle is extended to the first electrically-conductive backing plate direction by second electrically-conductive backing plate, so that conducting between first electrically-conductive backing plate after second electrically-conductive backing plate and the touching distortion.
The contact panel of present technique scheme is realized conducting between first electrically-conductive backing plate and second electrically-conductive backing plate through carbon nano tube bundle; It has following advantage: because carbon nano tube bundle has good intensity and good pliability; Therefore, contact panel can have long serviceable life; And,, help the accurate location of contact panel, thereby contact panel can have sensitivity preferably and resolution to touch position because carbon nano tube bundle has good electrical conductivity.
Description of drawings
Fig. 1 is the structural representation of the contact panel that provides of present technique scheme first embodiment.
Fig. 2 is the vertical view of second electrically-conductive backing plate that provides of present technique scheme first embodiment.
Fig. 3 is the structural representation behind touching first electrically-conductive backing plate that provides of present technique scheme first embodiment.
Fig. 4 is the structural representation of the contact panel that provides of present technique scheme second embodiment.
Fig. 5 is the vertical view of second electrically-conductive backing plate that provides of present technique scheme second embodiment.
Fig. 6 is the structural representation behind touching first electrically-conductive backing plate that provides of present technique scheme second embodiment.
Embodiment
To combine accompanying drawing and a plurality of embodiment below, the contact panel that the present technique scheme provides is done further to specify.
Please consult Fig. 1 and Fig. 2 in the lump, the contact panel 10 that present technique scheme first embodiment provides comprises first electrically-conductive backing plate 11, second electrically-conductive backing plate 12, a plurality of carbon nano tube bundle 13 and a plurality of interval body 14.Said first electrically-conductive backing plate 11 can produce distortion when being touched.Said second electrically-conductive backing plate 12 and first electrically-conductive backing plate 11 are oppositely arranged.Said a plurality of carbon nano tube bundle 13 grows in second electrically-conductive backing plate 12, and extends to first electrically-conductive backing plate, 11 directions from second electrically-conductive backing plate 12, is used for first electrically-conductive backing plate 11 after conducting second electrically-conductive backing plate 12 is out of shape with touching.Said a plurality of interval body 14 is arranged between first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12, and spaced apart between a plurality of carbon nano tube bundles 13, with interval first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12, and adjacent at interval simultaneously carbon nano tube bundle 13.
Said first electrically-conductive backing plate 11 comprises first insulation course 111 and first conductive layer 112 that is attached to first insulation course 111.Said first insulation course 111 is for example processed by materials such as pi, polyethylene terephthalate, soft epoxy resins by being convenient to realize that the flexible material of touching distortion processes.Said first conductive layer 112 is processed by transparent conductive material, for example tin indium oxide, indium zinc oxide, aluminum zinc oxide, nickel gold plating etc.First conductive layer 112 can have predetermined pattern, for example is strip pattern or blocky regularly arranged and that conduct each other; First conductive layer 112 also can be the conductive layer of the continuous distribution that do not have pattern.In the present embodiment, first conductive layer 112 is continuous indium tin oxide layer.
Second conductive layer 122 that said second electrically-conductive backing plate 12 comprises second insulation course 121 and is attached to second insulation course 121.Said second conductive layer 122 is relative with first conductive layer 112.In the present embodiment, second conductive layer 122 also is continuous indium tin oxide layer.121 of said second insulation courses can be processed by the hard material material, are for example processed by materials such as polymethylmethacrylate, PVC, polycarbonate.
Be formed with carbon nano tube growth layer 15 on second conductive layer 122 of said second electrically-conductive backing plate 12; Said carbon nano tube growth layer 15 is meant the catalyst layer of being convenient to carbon nano tube growth; Be generally iron-nickel dam, iron-cobalt layer, iron-cobalt-nickel dam, iron-magnesium oxide layer etc., so that a plurality of carbon nano tube bundles 13 of growing above that.The method that on second conductive layer 122, forms carbon nano tube growth layer 15 is not limit, and can be templated deposition method, low temperature magnetic sputtering method or the like, only needs second conductive layer 122 not to be impacted to get final product.Carbon nano tube growth layer 15 can have predetermined pattern; Promptly have and the corresponding pattern of the distribution of a plurality of carbon nano tube bundles 13, form a plurality of carbon nano tube bundles 13 that distribute by predetermined pattern thereby on carbon nano tube growth layer 15, can grow during carbon nano-tube; Certainly; Carbon nano tube growth layer 15 also can be continuous catalyst layer; Only need the template carbon nano-tube on carbon nano tube growth layer 15 through having predetermined pattern this moment, can on carbon nano tube growth layer 15, grow a plurality of carbon nano tube bundles 13 that distribute by predetermined pattern equally.
In the present embodiment, carbon nano tube growth layer 15 comprises a plurality of square growth pieces 151 that are uniformly distributed in second conductive layer 122.The size of square growth piece 151 can be between 5 microns * 5 microns to 100 microns * 100 microns, and the spacing of adjacent square growth piece 151 can be 100 microns to 500 microns.
Thereby, can on carbon nano tube growth layer 15, grow a plurality of carbon nano tube bundles 13 that distribute by predetermined pattern through chemical vapour deposition technique, low temperature arc process or other method.In the present embodiment, carbon nano tube bundle 13 is square carbon nano pipe array for xsect, and the spacing of its size and adjacent carbon nano tube bundle 13 is all corresponding with the pattern of carbon nano tube growth layer 15.The a plurality of carbon nano tube bundles 13 and first conductive layer 112 have a determining deviation.This spacing in the deformation range of first insulation course 111, thereby a plurality of carbon nano tube bundle 13 can and only in first electrically-conductive backing plate 11 touching distortion back through directly contacting conducting first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12.Certainly, the concrete numerical value of this spacing is decided according to the application of force size of the deformability of first insulation course 111 and contact.General, the spacing of the carbon nano tube bundle 13 and first conductive layer 112 can be between 5 microns to 10 microns.
Spherical particle or the blocky-shaped particle of said a plurality of interval body 14 for being processed by soft resin is bonded in second electrically-conductive backing plate 12 through cementing agent, and spaced apart between a plurality of carbon nano tube bundles 13.The height of interval body 14 can be equal to or slightly less than the spacing of first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12, but should be greater than the thickness sum of the height and the carbon nano tube growth layer 15 of carbon nano tube bundle 13.That is, the spacing of the interval body 14 and first electrically-conductive backing plate 11 should be less than the spacing of the carbon nano tube bundle 13 and first conductive layer 112.In the present embodiment, the height of interval body 14 is between 10 microns to 25 microns.Thereby; A plurality of interval bodies 14 can be avoided conducting between the adjacent carbon nano tube bundle 13; Can also avoid misleading between first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12, a plurality of interval bodies 14 do not influence the touching distortion that contact is touched first electrically-conductive backing plate, 11 backs, first electrically-conductive backing plate 11 yet simultaneously.In the present embodiment, the spacing of the height of interval body 14 and first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12 about equally.
Certainly, contact panel 10 can further include display screen and controller.Said display screen is used for display image, and it can be arranged at contact panel 10 belows, can make second electrically-conductive backing plate 12 between first electrically-conductive backing plate 11 and display screen.Said controller can be connected between contact panel 10 and the display screen, to be used for the display image according to the touching signal controlling display screen of contact panel 10.
See also Fig. 3, the localization method of the contact panel 10 that the present technique scheme provides is similar with the localization method of electric resistance touch-control panel.When finger or after pointer touches first electrically-conductive backing plate 11; 11 distortion of first electrically-conductive backing plate also make the conductive layer 112 of winning contact with a certain carbon nano tube bundle 13; Thereby win electrically-conductive backing plate 11 and second electrically-conductive backing plate 12 are conducted; At this moment, connect the even gradual change electric field under the axial 5V voltage of y, the y axial coordinate of comparing with 5V and can calculate touch position through the magnitude of voltage of first conductive layer 112 that will obtain at second conductive layer 122.In like manner, also can obtain the x axial coordinate of touch position.So, can realize the location of touch position, thereby realize touch-control contact panel 10.Certainly, the electric field that said even gradual change electric field also can form for the low voltage of other numerical value, the for example electric field of 10V voltage formation.
In the present technique scheme; Because carbon nano tube bundle 13 sizes are less; Distribute spacing is also less, therefore, and after contacts such as finger or pointer are touched first electrically-conductive backing plate 11; Must make at least one carbon nano tube bundle 13 conductings, first electrically-conductive backing plate 11 and second electrically-conductive backing plate 12, thereby make contact panel 10 realize touch-control and have The better resolution and sensitivity.
Please consult Fig. 4 and Fig. 5 in the lump; The contact panel 10 that the contact panel 20 that present technique scheme second embodiment provides and first embodiment provide is roughly the same; Its difference is: first conductive layer 212 that is attached to first insulation course 211 comprises a plurality of tin indium oxide buss of arranging along first direction; The width of tin indium oxide bus is 5 microns to 100 microns, and the spacing of adjacent tin indium oxide bus is between 100 microns to 500 microns.Second conductive layer 222 that is attached to second insulation course 221 comprises a plurality of tin indium oxide buss of arranging along second direction, and said second direction is perpendicular to first direction.The size of tin indium oxide bus is corresponding with the size of tin indium oxide bus in first conductive layer 212 in second conductive layer 222.
A plurality of carbon nano tube bundles 23 grow in second conductive layer 222, particularly, grow in the position of intersecting along second direction tin indium oxide bus of arranging and the tin indium oxide bus of arranging along first direction.
And in the present embodiment, the height of interval body 24 is slightly less than the spacing of first electrically-conductive backing plate 21 and second electrically-conductive backing plate 22.
Please consult Fig. 4 and Fig. 6 in the lump; Because carbon nano tube bundle 23 has the performance of point discharge under higher drive; Therefore, in the present embodiment, the spacing of the carbon nano tube bundle 23 and first conductive layer 212 be first electrically-conductive backing plate 21 deformation distance and carbon nano tube bundle 23 arcing distance add with.This spacing is relevant with the driving voltage that puts on carbon nano tube bundle 23.For example, this spacing can be between 10 microns to 20 microns.Thereby; After touching first electrically-conductive backing plate 21 makes electrically-conductive backing plate 21 distortion of winning; Can be after first conductive layer 212 or second conductive layer 222 connect higher driving voltage so that carbon nano tube bundle 23 generation point discharges; Thereby conducting first electrically-conductive backing plate 21 and second electrically-conductive backing plate 22, thereby can position touch position.
The contact panel of present technique scheme is realized conducting between first electrically-conductive backing plate and second electrically-conductive backing plate through carbon nano tube bundle; It has following advantage: because carbon nano tube bundle has good intensity and good pliability; Therefore, contact panel can have long serviceable life; And,, help the accurate location of contact panel, thereby contact panel can have sensitivity preferably and resolution to touch position because carbon nano tube bundle has good electrical conductivity.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. a contact panel comprises first electrically-conductive backing plate and second electrically-conductive backing plate, and said first electrically-conductive backing plate can produce distortion when being touched; Said second electrically-conductive backing plate and first electrically-conductive backing plate are oppositely arranged, and said contact panel also comprises a plurality of interval bodies, and said a plurality of interval bodies are arranged between first electrically-conductive backing plate and second electrically-conductive backing plate; It is characterized in that; Growth has a plurality of carbon nano tube bundles on said second electrically-conductive backing plate, and said a plurality of carbon nano tube bundles are extended to the first electrically-conductive backing plate direction by second electrically-conductive backing plate, so that conducting between first electrically-conductive backing plate after second electrically-conductive backing plate and the touching distortion; Said a plurality of carbon nano tube bundle evenly distributes by predetermined pattern; Said a plurality of interval body is distributed between a plurality of carbon nano tube bundles, and with adjacent at interval carbon nano tube bundle, each carbon nano tube bundle is a carbon nano pipe array.
2. contact panel as claimed in claim 1; It is characterized in that; Be formed with the carbon nano tube growth layer of a plurality of carbon nano tube bundles that are used to grow on said second electrically-conductive backing plate, said carbon nano tube growth layer has and the corresponding pattern of the distribution of a plurality of carbon nano tube bundles.
3. contact panel as claimed in claim 2 is characterized in that, said carbon nano tube growth layer is iron-nickel dam, iron-cobalt layer, iron-cobalt-nickel dam or iron-magnesium oxide layer.
4. contact panel as claimed in claim 1 is characterized in that the xsect of each carbon nano tube bundle is square, and its size is between 5 microns * 5 microns to 100 microns * 100 microns, and the spacing of adjacent carbon nano tube bundle is 100 microns to 500 microns.
5. contact panel as claimed in claim 1 is characterized in that, said a plurality of carbon nano tube bundles are through first electrically-conductive backing plate after directly contact or point discharge conducting second electrically-conductive backing plate are out of shape with touching.
6. contact panel as claimed in claim 1; It is characterized in that; Said first electrically-conductive backing plate comprises first insulation course and first conductive layer; Said second electrically-conductive backing plate comprises second insulation course and second conductive layer, and said first conductive layer is relative with second conductive layer, and said a plurality of carbon nano tube bundles grow in second conductive layer.
7. contact panel as claimed in claim 6; It is characterized in that; Said first conductive layer comprises a plurality of buss of arranging along first direction; Said second conductive layer comprises a plurality of buss of arranging along second direction, and said first direction is perpendicular to second direction, and said a plurality of carbon nano tube bundles grow in bus of arranging along first direction and the position of intersecting along the bus that second direction is arranged.
8. contact panel as claimed in claim 7 is characterized in that, in said first conductive layer or second conductive layer, the width of tin indium oxide bus is 5 microns to 100 microns, and the spacing of adjacent tin indium oxide bus is between 100 microns to 500 microns.
9. contact panel as claimed in claim 6 is characterized in that, said first insulation course is the flexible material layer, and said second insulation course is a layer of rigid material.
10. contact panel as claimed in claim 1 is characterized in that, said interval body is spherical particle or the blocky-shaped particle that soft resin is processed, and the spacing of the said interval body and first electrically-conductive backing plate is less than the spacing of a plurality of carbon nano tube bundles and first electrically-conductive backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103017403A CN101587397B (en) | 2008-05-23 | 2008-05-23 | Touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103017403A CN101587397B (en) | 2008-05-23 | 2008-05-23 | Touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101587397A CN101587397A (en) | 2009-11-25 |
| CN101587397B true CN101587397B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103017403A Expired - Fee Related CN101587397B (en) | 2008-05-23 | 2008-05-23 | Touch panel |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693611B (en) * | 2013-12-04 | 2016-06-22 | 西安理工大学 | A kind of Kynoar/CNT taper micro-pillar array and preparation method thereof |
| CN108630708A (en) | 2017-03-15 | 2018-10-09 | 京东方科技集团股份有限公司 | Electrically-conductive backing plate and preparation method thereof, display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447279A (en) * | 2003-03-18 | 2003-10-08 | 中国电子科技集团公司第五十五研究所 | High reliable touch screen and manufacturing technique |
| CN1483667A (en) * | 2002-09-16 | 2004-03-24 | �廪��ѧ | Carbon nano pipe rpoe and preparation method thereof |
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2008
- 2008-05-23 CN CN2008103017403A patent/CN101587397B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483667A (en) * | 2002-09-16 | 2004-03-24 | �廪��ѧ | Carbon nano pipe rpoe and preparation method thereof |
| CN1447279A (en) * | 2003-03-18 | 2003-10-08 | 中国电子科技集团公司第五十五研究所 | High reliable touch screen and manufacturing technique |
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| Publication number | Publication date |
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| CN101587397A (en) | 2009-11-25 |
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Granted publication date: 20120718 Termination date: 20170523 |