CN104866156A - Sapphire-substrate graphene-surface capacitive screen and manufacturing method - Google Patents
Sapphire-substrate graphene-surface capacitive screen and manufacturing method Download PDFInfo
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- CN104866156A CN104866156A CN201510322056.3A CN201510322056A CN104866156A CN 104866156 A CN104866156 A CN 104866156A CN 201510322056 A CN201510322056 A CN 201510322056A CN 104866156 A CN104866156 A CN 104866156A
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Abstract
The invention discloses a sapphire-substrate graphene-surface capacitive screen and a manufacturing method, and relates to the technical field of layered structures of capacitive touch screens. The sapphire-substrate graphene-surface capacitive screen comprises a cover plate layer, an OCA optical cement layer, a graphene conducting layer and a sapphire substrate in sequence from top to bottom, wherein one or more graphene conducting layers are grown epitaxially on the sapphire substrate; metal copper electrodes are arranged around the graphene conducting layer(s), and are laminated with graphene; the metal copper electrodes are connected with electrode leads; and the graphene conducting layer(s) can be connected with a control chip through the electrode leads. Through reasonable combination of sapphire and graphene, the surface wear resistance of a touch screen is enhanced. Through application of graphene, a manufacturing process is simplified; the light transmittance is enhanced; and the manufacturing cost is reduced.
Description
Technical field
The present invention relates to the layer structure technical field of capacitive touch screen.
Background technology
It is large that sapphire has hardness, anti-scratch, good heat resistance, and the advantages such as light transmission height and chemical stabilization, can replace traditional glass material makes touch screen protective substrate, meets mobile phone, the demand of the electronic product shatter-resistant anti-scratch such as wrist-watch.Graphene is the hexagonal structure be made up of carbon atom, has good light transmission, electric conductivity and mechanical property, has the advantage of high sensitivity, frivolous, high transmission rate, high conductivity and low cost.Single-layer graphene transmittance reaches 97.7%, is highly suitable for the research of transparent conductive film.Present stage, make touch-screen working lining and mainly utilize ITO, and the indium metal contained in ITO content is on earth limited, expensive, especially toxicity is very large, and its application is restricted.As the nova of carbonaceous material, Graphene is considered to the equivalent material of ITO due to the feature having low dimension and can form infiltration conductance network under low-density condition, is applied to touch-screen aspect.For this reason, this programme, by sapphire and Graphene reasonable combination, has designed and developed a kind of novel sapphire substrate graphenic surface formula capacitive screen structure.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of sapphire substrate graphenic surface formula capacitance plate and preparation method, sapphire and Graphene are reasonably combined, improve the wearing quality of touch screen surface, the application of Graphene simplifies manufacture craft, improve transmittance, reduce cost of manufacture.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of sapphire substrate graphenic surface formula capacitance plate, comprise and comprise cover layer, OCA optical cement layer, graphene conductive layer and Sapphire Substrate from top to bottom successively, at described Sapphire Substrate Epitaxial growth single or multiple lift graphene conductive layer, described graphene conductive layer surrounding is provided with metallic copper electrode, and fit with Graphene, described metallic copper Electrode connection has contact conductor, and described metallic copper electrode can be connected with control chip by contact conductor.
Further, described metallic copper electrode divides four parts, is fitted in described graphene conductive layer four limit respectively, and is not communicated with between any two at edge, and the medium position of every part is all connected with contact conductor.
Further, described metallic copper electrode divides four parts, is fitted in described graphene conductive layer four corner respectively, and is not communicated with in the middle part of each limit, and the corner location of every part is all connected with contact conductor.
Further, described metallic copper electrode is an entirety, is fitted in described graphene conductive layer four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor.
Further, described Sapphire Substrate is the substrate of twin polishing, and described OCA optical cement layer thickness is 0.001-10mm, and described metallic copper electrode width is 0.01-10mm, and described cover layer is made up of PC material.
A kind of sapphire substrate graphenic surface formula capacitance plate preparation method, comprises the following steps:
1) select the Sapphire Substrate of twin polishing, epitaxial growth single or multiple lift grapheme material on a sapphire substrate, form graphene conductive layer, graphene conductive layer is as touch-screen conductive layer, and Sapphire Substrate is as substrate;
2) plate long and narrow metallic copper electrode in the surrounding of graphene conductive layer, can widen according to the actual requirements or constriction, metallic copper Electrode connection contact conductor;
3) on graphene conductive layer and metallic copper electrode, cover OCA optical cement layer, can to thicken according to the actual requirements or thinning;
4) in OCA optical cement layer, make cover layer, thus complete whole sapphire substrate graphenic surface formula capacitance plate.
Further, in described step 1), graphene conductive layer can also transfer in Sapphire Substrate by growing single or multiple lift Graphene on other substrates, or by the Graphene spin coating of oxidation on a sapphire substrate.
Further, described OCA optical cement layer thickness is 0.001-10mm, and described metallic copper electrode width is 0.01-10mm, and described cover layer is made up of PC material.
Further, described step 2) in metallic copper Electrode connection contact conductor, for one of following three kinds of modes, the first: described metallic copper electrode divides four parts, be fitted in described graphene conductive layer four limit respectively, and be not communicated with between any two at edge, the medium position of every part is all connected with contact conductor; The second: described metallic copper electrode divides four parts, is fitted in described graphene conductive layer four corner respectively, and is not communicated with in the middle part of each limit, and the corner location of every part is all connected with contact conductor; The third: described metallic copper electrode is an entirety, is fitted in described graphene conductive layer four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor.
The beneficial effect adopting technique scheme to produce is: the present invention has prepared novel projecting type capacitor screen in conjunction with the advantage of sapphire and Graphene, makees touch screen protective substrate, improve the wearing quality of touch screen surface by the sapphire material of novel high rigidity; Graphene replaces traditional tin indium oxide (ITO) and prepares capacitance plate, and Graphene is as capacitance plate conductive layer, and the application of Graphene simplifies manufacture craft, improves transmittance, reduces cost of manufacture.
During work, a low-voltage AC battery is formed in graphene conductive layer, when this grapheme capacitive touch screen surface of user's finger contacts, a coupling capacitance is formed between finger and graphene conductive layer, this is carved with a certain amount of Charger transfer to human body, and in order to recovery charge loss, electric charge supplements into from the corner of this grapheme capacitive touch screen, the distance of the quantity of electric charge that all directions are supplemented and contact point is proportional, can be extrapolated the position of contact point by control chip.
Cover layer of the present invention is made up of PC material; OCA optical cement layer effect: one is increase the associativity between graphene conductive layer and cover layer; Two is that protection Graphene is from damage; Three is that the rough and uneven in surface and water ripple phenomenon of graphenic surface after eliminating growth in prior art or transfer is on the impact of touch-screen.
The preparation method of graphene conductive layer has three kinds: the first is direct extending and growing graphene material on a sapphire substrate; The second is that growing graphene transfers in Sapphire Substrate on other substrates; The third is that graphene oxide is spin-coated on sapphire substrate surface; Wherein, Sapphire Substrate is as substrate, and grapheme material prepares surface-type capacitance plate as conductive layer.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is the metallic copper electrode of Fig. 1 and the structural representation of contact conductor connected mode embodiment 1;
Fig. 3 is the metallic copper electrode of Fig. 1 and the structural representation of contact conductor connected mode embodiment 2;
Fig. 4 is the metallic copper electrode of Fig. 1 and the structural representation of contact conductor connected mode embodiment 3;
Wherein, 1 Sapphire Substrate, 2 graphene conductive layers, 3OCA optical cement layer, 4 cover layer, 5 metallic copper electrodes, 6 contact conductors.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the present invention is a kind of sapphire substrate graphenic surface formula capacitance plate, comprise and comprise cover layer 4, OCA optical cement layer 3, graphene conductive layer 2 and Sapphire Substrate 1 from top to bottom successively, at described Sapphire Substrate 1 Epitaxial growth single or multiple lift graphene conductive layer 2, described graphene conductive layer 2 surrounding is provided with metallic copper electrode 5, and fit with Graphene, described metallic copper electrode 5 is connected with contact conductor 6, and described metallic copper electrode 5 can be connected with control chip by contact conductor 6.
As shown in Figure 2, metallic copper electrode of the present invention 5 point of four part, is fitted in described graphene conductive layer 2 four limit respectively, and is not communicated with between any two at edge, and the medium position of every part is all connected with contact conductor 6.
As shown in Figure 3, metallic copper electrode of the present invention 5 point of four part, is fitted in described graphene conductive layer 2 four corner respectively, and is not communicated with in the middle part of each limit, and the corner location of every part is all connected with contact conductor 6.
As shown in Figure 4, metallic copper electrode 5 of the present invention is an entirety, is fitted in described graphene conductive layer 2 four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor 6.
Described Sapphire Substrate 1 is the substrate of twin polishing, and described OCA optical cement layer 3 thickness is 0.001-10mm, and described metallic copper electrode 5 width is 0.01-10mm, and described cover layer 4 is made up of PC material.
A kind of sapphire substrate graphenic surface formula capacitance plate preparation method of the present invention, comprises the following steps:
1) select the Sapphire Substrate of twin polishing, epitaxial growth single or multiple lift grapheme material on a sapphire substrate, form graphene conductive layer, graphene conductive layer is as touch-screen conductive layer, and Sapphire Substrate is as substrate;
2) plate long and narrow metallic copper electrode 5 in the surrounding of graphene conductive layer, can widen according to the actual requirements or constriction, metallic copper electrode 5 connecting electrode lead-in wire 6;
3) on graphene conductive layer and metallic copper electrode 5, cover OCA optical cement layer, can to thicken according to the actual requirements or thinning;
4) in OCA optical cement layer, make cover layer, thus complete whole sapphire substrate graphenic surface formula capacitance plate.
In described step 1, graphene conductive layer can also transfer in Sapphire Substrate by growing single or multiple lift Graphene on other substrates, or by the Graphene spin coating of oxidation on a sapphire substrate.
The embodiment of further optimization is described OCA optical cement layer 3 thickness is 0.001-10mm, and described metallic copper electrode 5 width is 0.01-10mm, and described cover layer 4 is made up of PC material.
The embodiment of further optimization is the metallic copper electrode 5 connecting electrode lead-in wire 6 in described step 2, for one of following three kinds of modes, the first: described metallic copper electrode 5 point of four part, be fitted in described graphene conductive layer 2 four limit respectively, and be not communicated with between any two at edge, the medium position of every part is all connected with contact conductor 6; The second: described metallic copper electrode 5 point of four part, is fitted in described graphene conductive layer 2 four corner respectively, and is not communicated with in the middle part of each limit, and the corner location of every part is all connected with contact conductor 6; The third: described metallic copper electrode 5 is an entirety, is fitted in described graphene conductive layer 2 four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor 6.
Principle of work of the present invention: the present invention has prepared novel projecting type capacitor screen in conjunction with the advantage of sapphire and Graphene, makees touch screen protective substrate, improve the wearing quality of touch screen surface by the sapphire material of novel high rigidity; Graphene replaces traditional tin indium oxide, and (ITO prepares capacitance plate, and Graphene is as capacitance plate conductive layer, and the application of Graphene simplifies manufacture craft, improves transmittance, reduces cost of manufacture.
During work, a low-voltage AC battery is formed in graphene conductive layer, when this grapheme capacitive touch screen surface of user's finger contacts, a coupling capacitance is formed between finger and graphene conductive layer, this is carved with a certain amount of Charger transfer to human body, and in order to recovery charge loss, electric charge supplements into from the corner of this grapheme capacitive touch screen, the distance of the quantity of electric charge that all directions are supplemented and contact point is proportional, can be extrapolated the position of contact point by control chip.
Cover layer of the present invention is made up of PC material; OCA optical cement layer effect: one is increase the associativity between graphene conductive layer and cover layer; Two is that protection Graphene is from damage; Three is that the rough and uneven in surface and water ripple phenomenon of graphenic surface after eliminating growth in prior art or transfer is on the impact of touch-screen.
The preparation method of graphene conductive layer has three kinds: the first is direct extending and growing graphene material on a sapphire substrate; The second is that growing graphene transfers in Sapphire Substrate on other substrates; The third is that graphene oxide is spin-coated on sapphire substrate surface; Wherein, Sapphire Substrate is as substrate, and grapheme material prepares surface-type capacitance plate as conductive layer.
Claims (9)
1. a sapphire substrate graphenic surface formula capacitance plate, it is characterized in that: comprise and comprise cover layer (4) from top to bottom successively, OCA optical cement layer (3), graphene conductive layer (2) and Sapphire Substrate (1), at described Sapphire Substrate (1) Epitaxial growth single or multiple lift graphene conductive layer (2), described graphene conductive layer (2) surrounding is provided with metallic copper electrode (5), and fit with Graphene, described metallic copper electrode (5) is connected with contact conductor (6), described metallic copper electrode (5) can be connected with control chip by contact conductor (6).
2. a kind of sapphire substrate graphenic surface formula capacitance plate according to claim 1, it is characterized in that: described metallic copper electrode (5) point four parts, be fitted in described graphene conductive layer (2) four limit respectively, and be not communicated with between any two at edge, the medium position of every part is all connected with contact conductor (6).
3. a kind of sapphire substrate graphenic surface formula capacitance plate according to claim 1, it is characterized in that: described metallic copper electrode (5) point four parts, be fitted in described graphene conductive layer (2) four corner respectively, and be not communicated with in the middle part of each limit, the corner location of every part is all connected with contact conductor (6).
4. a kind of sapphire substrate graphenic surface formula capacitance plate according to claim 1, it is characterized in that: described metallic copper electrode (5) is an entirety, be fitted in described graphene conductive layer (2) four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor (6).
5. a kind of sapphire substrate graphenic surface formula capacitance plate according to claim 1, it is characterized in that: the substrate that described Sapphire Substrate (1) is twin polishing, described OCA optical cement layer (3) thickness is 0.001-10mm, described metallic copper electrode (5) width is 0.01-10mm, and described cover layer (4) is made up of PC material.
6. a kind of sapphire substrate graphenic surface formula capacitance plate preparation method according to claim 1, is characterized in that: comprise the following steps:
1) select the Sapphire Substrate of twin polishing, epitaxial growth single or multiple lift grapheme material on a sapphire substrate, form graphene conductive layer, graphene conductive layer is as touch-screen conductive layer, and Sapphire Substrate is as substrate;
2) plate long and narrow metallic copper electrode (5) in the surrounding of graphene conductive layer, can widen according to the actual requirements or constriction, metallic copper electrode (5) connecting electrode lead-in wire (6);
3) cover OCA optical cement layer graphene conductive layer and metallic copper electrode (5) are upper, can to thicken according to the actual requirements or thinning;
4) in OCA optical cement layer, make cover layer, thus complete whole sapphire substrate graphenic surface formula capacitance plate.
7. a kind of sapphire substrate graphenic surface formula capacitance plate preparation method according to claim 6, it is characterized in that: in described step 1), graphene conductive layer can also transfer in Sapphire Substrate by growing single or multiple lift Graphene on other substrates, or by the Graphene spin coating of oxidation on a sapphire substrate.
8. a kind of sapphire substrate graphenic surface formula capacitance plate preparation method according to claim 6, it is characterized in that: described OCA optical cement layer (3) thickness is 0.001-10mm, described metallic copper electrode (5) width is 0.01-10mm, and described cover layer (4) is made up of PC material.
9. a kind of sapphire substrate graphenic surface formula capacitance plate preparation method according to claim 6, it is characterized in that: described step 2) in metallic copper electrode (5) connecting electrode lead-in wire (6), for one of following three kinds of modes, the first: described metallic copper electrode (5) point four parts, be fitted in described graphene conductive layer (2) four limit respectively, and be not communicated with between any two at edge, the medium position of every part is all connected with contact conductor (6); The second: described metallic copper electrode (5) point four parts, are fitted in described graphene conductive layer (2) four corner respectively, and are not communicated with in the middle part of each limit, the corner location of every part is all connected with contact conductor (6); The third: described metallic copper electrode (5) is an entirety, is fitted in described graphene conductive layer (2) four limit, and head and the tail are communicated with, and four angles are all connected with contact conductor (6).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032418A (en) * | 2018-08-10 | 2018-12-18 | 北京旭碳新材料科技有限公司 | A kind of flexible touch screen and preparation method thereof |
| CN113253242A (en) * | 2021-06-03 | 2021-08-13 | 宁波永新光学股份有限公司 | Window assembly mounted on vehicle-mounted laser radar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419519A (en) * | 2007-10-23 | 2009-04-29 | 清华大学 | Touch panel |
| CN102906015A (en) * | 2011-02-09 | 2013-01-30 | 创业发展联盟技术有限公司 | Method for producing multilayer graphene coated substrate |
| CN104020919A (en) * | 2014-05-20 | 2014-09-03 | 深圳市航泰光电有限公司 | Graphene capacitive type touch screen and production and manufacturing method thereof |
| US20140327838A1 (en) * | 2013-05-02 | 2014-11-06 | The Boeing Company | Touch screens comprising graphene layers |
| CN204833226U (en) * | 2015-06-12 | 2015-12-02 | 中国电子科技集团公司第十三研究所 | Sapphire base plate graphite alkene surface formula electric capacity screen |
-
2015
- 2015-06-12 CN CN201510322056.3A patent/CN104866156B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419519A (en) * | 2007-10-23 | 2009-04-29 | 清华大学 | Touch panel |
| CN102906015A (en) * | 2011-02-09 | 2013-01-30 | 创业发展联盟技术有限公司 | Method for producing multilayer graphene coated substrate |
| US20140327838A1 (en) * | 2013-05-02 | 2014-11-06 | The Boeing Company | Touch screens comprising graphene layers |
| CN104020919A (en) * | 2014-05-20 | 2014-09-03 | 深圳市航泰光电有限公司 | Graphene capacitive type touch screen and production and manufacturing method thereof |
| CN204087184U (en) * | 2014-05-20 | 2015-01-07 | 深圳市航泰光电有限公司 | The layer structure of grapheme capacitive touch screen |
| CN204833226U (en) * | 2015-06-12 | 2015-12-02 | 中国电子科技集团公司第十三研究所 | Sapphire base plate graphite alkene surface formula electric capacity screen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032418A (en) * | 2018-08-10 | 2018-12-18 | 北京旭碳新材料科技有限公司 | A kind of flexible touch screen and preparation method thereof |
| CN113253242A (en) * | 2021-06-03 | 2021-08-13 | 宁波永新光学股份有限公司 | Window assembly mounted on vehicle-mounted laser radar |
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