CN104020882A - Touch screen - Google Patents
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- CN104020882A CN104020882A CN201410239386.1A CN201410239386A CN104020882A CN 104020882 A CN104020882 A CN 104020882A CN 201410239386 A CN201410239386 A CN 201410239386A CN 104020882 A CN104020882 A CN 104020882A
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- touch
- conductive layer
- control electrode
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- Position Input By Displaying (AREA)
- Laminated Bodies (AREA)
Abstract
A touch screen comprises a touch substrate, a protection panel and a transparent optical adhesive layer. The touch substrate comprises a transparent substrate body, a first conducting layer arranged on one side of the transparent substrate body, a transparent bonding layer arranged between the transparent substrate body and the first conducting layer and second touch electrodes arranged on the transparent substrate body. The first conducting layer comprises a matrix and conductive nano wires embedded into the matrix, the conductive nano wires are connected in a staggered mode to form a conductive grid, the matrix is cured transparent photosensitive resin, the first conducting layer is patterned to form a plurality of first touch electrodes, and the first touch electrodes and the second touch electrodes are used for determining X-axis coordinates and Y-axis coordinates of touch points. The protection panel is arranged on one side of the touch substrate. The transparent optical adhesive layer is arranged between the touch substrate and the protection panel and used for bonding the touch substrate and the protection panel. The touch screen has better conductivity.
Description
Technical field
The present invention relates to touch technology field, particularly relate to a kind of touch-screen.
Background technology
Touch-screen is to receive the inductive arrangement that touches input signal.Touch-screen has given information interaction brand-new looks, is extremely attractive brand-new information interaction equipment.The development of touch screen technology has caused the common concern of domestic and international information medium circle, has become the Chaoyang new high-tech industry that photoelectricity industry is a dark horse.
Touch-screen comprises touch base plate and is laminated in the protection panel on touch base plate.The method for making of traditional touch base plate is generally:
(1) directly in transparent substrates, form conductive layer.With ITO (Indium Tin Oxide, tin indium oxide) conductive layer, be example, need to first carry out ITO plated film, then the ITO layer obtaining is carried out to graphical treatment.Because conductive layer is outside exposed, be easily scratched, and then cause the electric conductivity of conductive layer to reduce.
(2) residuite layer is set in transparent substrates, then adopts the modes such as impression on residuite layer, to form latticed groove, then in latticed groove filled conductive material (for example, metal, Graphene etc.), form latticed conductive layer.Because a side of latticed conductive layer is exposed to outside residuite layer, and the easily oxidation by air of a lot of conductive materials (for example, argent).And the oxidized meeting of conductive material causes the electric conductivity of latticed conductive layer to reduce.
Summary of the invention
Based on this, be necessary to provide a kind of touch-screen with better electric conductivity.
A touch-screen, comprising:
Touch base plate, comprise transparent substrates, be located at described transparent substrates one side the first conductive layer, be located at the transparent bonding layer between described transparent substrates and described the first conductive layer and be located at the second touch-control electrode in described transparent substrates; Described the first conductive layer comprises matrix and embeds the electrical-conductive nanometer silk thread in described matrix, and described electrical-conductive nanometer silk thread is cross-linked to form conductive grid; Described matrix is curing transparent feel photopolymer resin, and described the first conductive layer is patterned and forms a plurality of the first touch-control electrodes; Described the first touch-control electrode and described the second touch-control electrode are respectively used to determine X axis coordinate and the Y-axis coordinate of touch point;
Protect panel, be located at a side of described touch base plate; And
Transparent optical glue-line, is located between described touch base plate and described protection panel, for described touch base plate and the protection panel of boning.
In an embodiment, the thickness of described transparent substrates is 0.02mm～0.5mm therein.
In an embodiment, the thickness of described transparent substrates is 0.05mm～0.2mm therein.
In an embodiment, the thickness of described the first conductive layer is 0.05 μ m～10 μ m therein.
In an embodiment, the thickness of described the first conductive layer is 0.08 μ m～2 μ m therein.
In an embodiment, the sheet resistance of described the first conductive layer is 0.1 Ω/～500 Ω/ therein, and described electrical-conductive nanometer silk thread is gold nano silk thread, silver nanoparticle silk thread, Cu nanowire line, aluminium nanometer silk thread or carbon nanometer silk thread.
In an embodiment, the sheet resistance of described the first conductive layer is 50 Ω/～200 Ω/ therein.
In an embodiment, the diameter of described electrical-conductive nanometer silk thread is 10nm～1000nm therein, and length is 20nm～50 μ m.
In an embodiment, the described electrical-conductive nanometer silk thread of part exposes outside the side of described the first conductive layer away from described transparent substrates therein.
In an embodiment, the material of described transparent bonding layer is identical with the material of described matrix therein.
In an embodiment, the thickness of described transparent bonding layer is 0.5 μ m～50 μ m therein.
In an embodiment, also comprise adjustable refractive index layer therein; Described adjustable refractive index layer is located at the side that described touch base plate has described the first conductive layer, and the refractive index of described adjustable refractive index layer is 1.6～2.8.
In an embodiment, the material of described adjustable refractive index layer is TiO therein
2, Nb
2o
5or 1,3,5-triazines-2,4,6-, tri-aminated compoundss.
In an embodiment, also comprise protective seam therein; Described protective seam is located at the side that described touch base plate has described the first conductive layer.
In an embodiment, described protective seam is 0.1 μ m～10 μ m away from a side and described first conductive layer of described transparent substrates away from the distance between a side of described transparent substrates therein.
In an embodiment, described touch base plate also comprises the second conductive layer of being located at described transparent substrates opposite side therein, and described the second touch-control electrode is formed by described the second conductive layer pattern; Described the first touch-control electrode is strip, a plurality of described the first touch-control electrode parallel interval are arranged, described the second touch-control electrode is strip, and a plurality of described the second touch-control electrode parallel interval are arranged, and described the second touch-control electrode is with described first touch-control electrode is vertical arranges.
In an embodiment, the structure of described the first touch-control electrode and material are identical with structure and the material of described the second touch-control electrode therein.
In an embodiment, described the second conductive layer is ITO conductive layer, metal grill conductive layer, graphene conductive layer, carbon nanotube conducting layer or conducting polymer conductive layer therein.
Therein in an embodiment, described the second touch-control electrode is also formed by the first conductive layer pattern, a plurality of described the first touch-control electrodes extend longitudinally respectively and arrange lateral separation, described in each, the first touch-control electrode coordinates and is used for intercoupling formation coupling capacitance with some described the second touch-control electrodes, is longitudinally spaced with some described the second touch-control electrode that described in each, the first touch-control electrode coordinates.
In an embodiment, described the first touch-control electrode and described the second touch-control electrode are pectination therein, and described the first touch-control electrode and some described the second touch-control electrodes are mutually chimeric.
Conductive grid in the first conductive layer of above-mentioned touch base plate is coated by matrix, thereby makes above-mentioned the first conductive layer can avoid preferably scratching, and is not easy to damage.Greatly reduce the chance that conductive grid contacts with air simultaneously, make above-mentioned the first conductive layer be not easy oxidized.Therefore, above-mentioned touch-screen has better electric conductivity.And the conductive grid that is cross-linked to form with electrical-conductive nanometer silk thread of above-mentioned the first conductive layer realizes conduction, with respect to ITO conductive layer, it has relatively low resistivity.And electrical-conductive nanometer silk thread is better with respect to ITO pliability, thereby make above-mentioned touch-screen there is good bending resistance folding endurance.In addition, the conductive grid that electrical-conductive nanometer silk thread is cross-linked to form be take matrix as carrier, and this matrix is solidified and formed by transparent feel photopolymer resin, when making the first conductive layer, directly by exposure imaging, can obtain, without the step of extra coating, stripping photoresist, can simplify technique.
Accompanying drawing explanation
Fig. 1 is the structural representation of the touch-screen of an embodiment;
Fig. 2 is the exploded view of the touch-screen in Fig. 1;
Fig. 3 is the structural representation of the touch base plate in Fig. 1;
Fig. 4 is the first conductive layer in Fig. 3 and the structural representation of transparent bonding layer;
Fig. 5 is the structural representation of the touch base plate in another embodiment;
Fig. 6 is the structural representation of the touch-screen in another embodiment;
Fig. 7 is the process flow diagram of the method for making of the touch base plate in an embodiment;
Fig. 8 is the structural representation that the dry film in an embodiment is not removed diaphragm;
Fig. 9 is that dry film in an embodiment is in the constitutional diagram of exposure for the first time;
Figure 10 is that dry film in Fig. 9 is in the constitutional diagram of exposure for the second time;
Figure 11 is the structural representation after the dry film in Figure 10 develops;
Figure 12 is the structural representation after the dry film in another embodiment develops;
Figure 13 is the structural representation of the touch base plate of another embodiment.
Embodiment
Below in conjunction with drawings and the specific embodiments, touch-screen is further detailed.
As shown in Figures 1 and 2, the touch-screen 10 of an embodiment, comprises touch base plate 100, transparent optical glue-line 200 and protection panel 300.
Touch base plate 100 comprises transparent substrates, is located at the first conductive layer of transparent substrates one side, is located at the transparent bonding layer between transparent substrates and the first conductive layer and is located at the second touch-control electrode in transparent substrates.The first conductive layer comprises the electrical-conductive nanometer silk thread in matrix and embedding matrix, and electrical-conductive nanometer silk thread is cross-linked to form conductive grid.Matrix is curing transparent feel photopolymer resin, and the first conductive layer is patterned and forms some the first touch-control electrodes.The first touch-control electrode and the second touch-control electrode are respectively used to determine X axis coordinate and the Y-axis coordinate of touch point.
As shown in Figure 3, in the present embodiment, touch base plate 100 comprises transparent substrates 110, the first conductive layer 120, transparent bonding layer 130, the second conductive layer 140, adjustable refractive index layer 150 and protective seam 160.
The material of transparent substrates 110 can be glass, polymethylmethacrylate, polycarbonate, polyethylene terephthalate, cyclic olefine copolymer or cyclic olefin polymer.The thickness of transparent substrates 110 is 0.02mm～0.5mm.Further, in the present embodiment, after considering the processing complexity of transparent substrates 110 and the integral thickness of touch-screen 10, the thickness of transparent substrates 110 is preferably 0.05mm～0.2mm.
As shown in Fig. 2～4, the first conductive layer 120 is located at transparent substrates 110 1 sides.The first conductive layer 120 comprises matrix 122 and evenly embeds the electrical-conductive nanometer silk thread 124 in matrix 122.These electrical-conductive nanometer silk threads 124 are cross-linked to form conductive grid, make the whole homogeneous conductive of this first conductive layer 120.Matrix 122 is curing transparent feel photopolymer resin.The first conductive layer 120 is patterned and forms a plurality of the first touch-control electrodes 126.In the present embodiment, the first touch-control electrode 126 is strip, and a plurality of the first touch-control electrode 126 parallel interval are arranged.
In the present embodiment, partially conductive nanometer silk thread 124 exposes outside the side of the first conductive layer 120 away from transparent substrates 110.Although partially conductive nanometer silk thread 124 is exposed to outside matrix 122, but the main part of the conductive grid that electrical-conductive nanometer silk thread 124 is cross-linked to form is still coated by matrix 122, therefore, above-mentioned touch base plate 100 has better anti-oxidant and scratch resistance ability with respect to traditional touch base plate.
The thickness of the first conductive layer 120 is 0.05 μ m～10 μ m.When the thickness of design the first conductive layer 120, need to consider whether electrical-conductive nanometer silk thread 124 can embed in matrix 122 and the factors such as integral thickness of touch-screen 10 preferably.After amid all these factors, the thickness of the first conductive layer 120 is preferably 0.08 μ m～2 μ m.
In the present embodiment, the diameter of electrical-conductive nanometer silk thread 124 is 10nm～1000nm, and length is 20nm～50 μ m.Because the diameter of electrical-conductive nanometer silk thread 124 is less than the visual width of human eye, thereby guarantee the visually-clear of the second conductive layer 140.Electrical-conductive nanometer silk thread 124 can be easy to prepare and have for gold nanowires line, silver nanoparticle silk thread, Cu nanowire line, aluminium nanometer silk thread, carbon nanometer silk thread etc. the conductive thread of better electric conductivity.
Further, in the present embodiment, the sheet resistance of the first conductive layer 120 is 0.1 Ω/～500 Ω/, compared to ITO conductive layer, there is better electric conductivity, be more suitable for for making as panel computer (pad), all-in-one (All in one, AIO), the larger touch-control product of notebook (Note Book) equidimension.
The electric conductivity of the first conductive layer 120 is relevant to diameter and electrical-conductive nanometer silk thread 124 distribution densities of electrical-conductive nanometer silk thread 124, and diameter is larger, and distribution density is larger, and electric conductivity is better, and sheet resistance is lower.Yet the diameter of electrical-conductive nanometer silk thread 124 is larger, distribution density is larger, the transmitance of conductive layer is lower.Therefore,, in order to guarantee the balance of transmitance and electric conductivity, the sheet resistance of the first conductive layer 120 is preferably 50 Ω/～200 Ω/.
Transparent bonding layer 130 is located between transparent substrates 110 and the first conductive layer 120, thereby the first conductive layer 120 can be attached in transparent substrates 110 preferably.In the present embodiment, the thickness of transparent bonding layer 130 is 0.5 μ m～50 μ m.Further, in the present embodiment, the thickness of transparent bonding layer 130 is greater than the thickness of the first conductive layer 120.
Further, in the present embodiment, the material of transparent bonding layer 130 is identical with the material of matrix 122, is curing transparent feel photopolymer resin, thereby is convenient to the first conductive layer 120 and transparent bonding layer 130 be carried out to patterning simultaneously.
The second conductive layer 140 is located at transparent substrates 110 opposite sides, and the second touch-control electrode is formed by the second conductive layer 140 patternings.This second conductive layer 140 is ITO conductive layer, and is patterned and forms the second touch-control electrode 142 of a plurality of strips.These the second touch-control electrodes 142 parallel interval arrange and with the vertical setting of the first touch-control electrode 126.Work as conductor, for example during finger touch, the first touch-control electrode 126 and the second touch-control electrode 142, because capacitance variations forms touching signals, are respectively used to determine X axis coordinate and the Y-axis coordinate of touch point.
Be appreciated that in other embodiments, the second conductive layer 140 can be also metal grill conductive layer, graphene conductive layer, carbon nanotube conducting layer or conducting polymer conductive layer.The second conductive layer 140 also can have similar structure to the first conductive layer 120.The structure of the second conductive layer 140 and material are identical with the first conductive layer 120 structures and material.The second conductive layer 140 comprises matrix and evenly embeds the electrical-conductive nanometer silk thread in this matrix, and these electrical-conductive nanometer silk threads are cross-linked to form conductive grid, makes the whole homogeneous conductive of this second conductive layer 140.Be appreciated that between the second conductive layer 140 and transparent substrates 110 and also can be provided with transparent bonding layer.
Because being patterned, the first conductive layer 120 forms, make the first conductive layer 120 discontinuous, the part retaining forms the drafting department of touch base plate 100, removed part forms the background portion of touch base plate 100, drafting department from background portion because material is different, there is difference in reflectivity, particularly, when there is larger difference in height in drafting department and background portion, when light is radiated on touch base plate 100, pattern on touch base plate 100 is easily seen by user, and then is affected the visual effect of touch base plate 100.
In the present embodiment, by being set, adjustable refractive index layer 150 solves the problems referred to above.The refractive index of adjustable refractive index layer 150 is 1.6～2.8, is located on the first conductive layer 120, and simultaneously overlay pattern portion and background portion.
Further, in embodiment, the material of adjustable refractive index layer 150 is TiO
2, Nb
2o
5, 1,3,5-triazines-2, the transparent insulation materials such as 4,6-, tri-aminated compoundss.Further, the thickness of adjustable refractive index layer 150 is 20nm～10 μ m.
For prevent the first conductive layer 120 produce and use procedure in by scratch, also at the first conductive layer 120, away from a side of transparent substrates 110, protective seam 160 is set, and the while overlay pattern portion and background portion.In the present embodiment, the material of protective seam 160 is the insulation materials such as heat reactive resin, ultraviolet-curing resin.Protective seam 160 is 0.1 μ m～10 μ m away from a side and first conductive layer 120 of transparent substrates 110 away from the distance between a side of transparent substrates 110.
Be appreciated that in other embodiments, default adjustable refractive index layer 150 and protective seam 160, also can defaultly penetrate the one in rate regulating course 150 and protective seam 160 simultaneously.Fig. 5 is the situation of default adjustable refractive index layer 150.
As shown in Figure 6, in other embodiments, touch base plate 400 only comprises transparent substrates 410 and is located at relative two one of them the conductive layers 420 of surface of transparent substrates 410.Conductive layer 420 is patterned and forms a plurality of the first touch-control electrodes 421 and a plurality of the second touch-control electrode 423.A plurality of the first touch-control electrodes 421 extend longitudinally respectively and arrange lateral separation, and each first touch-control electrode 421 coordinates and is used for intercoupling formation coupling capacitance with some the second touch-control electrodes 423.Some the second touch-control electrodes 423 that coordinate with each first touch-control electrode 421 are longitudinally spaced.These the first touch-control electrodes 421 and the second touch-control electrode 423 are pectination.Each first touch-control electrode 421 is mutually chimeric with the second touch-control electrode 423 of some spaces longitudinally arrangement.By detecting the capacitance variations of the first touch-control electrode 421 and corresponding the second touch-control electrode 423, the coordinate of judgement touch point.Wherein, the first touch-control electrode 421 can be used for judging the X-axis coordinate of touch point, and the second corresponding touch-control electrode 423 can be used for judging the Y-axis coordinate of touch point.
As shown in Figure 7, in the present embodiment, also provide a kind of method for making of touch base plate as shown in Figure 3 100, comprise the steps:
Step S510, provides transparent substrates 110.
In the present embodiment, transparent substrates 110 1 sides are provided with the ITO layer as the second conductive layer 140 of touch base plate 100 in advance, so that follow-up formation the second touch-control electrode.
Step S520; one dry film 600 is provided; as shown in Figure 8; dry film 600 is by the transparent feel photopolymer resin precuring of flow-like and compacting and form; the transparent feel photopolymer resin of dry film 600 is semisolid, and dry film 600 is embedded in electrical-conductive nanometer silk thread and forms conductive layer 620 from the certain thickness scope of a side surface, and the region that dry film 600 does not embed electrical-conductive nanometer silk thread forms transparent bonding layer 610; conductive layer 620 surfaces are provided with diaphragm 640, and transparent bonding layer 610 surfaces are provided with diaphragm 630.
Wherein, semi-solid transparent feel photopolymer resin comprises each component of following parts by weight: 60～80 parts of film-forming resins, 1～10 part of emulsion, 5～20 parts of solvents, 0.1～5 part of stabilizing agent, 0.1～5 part of levelling agent, 0.1～5 part of defoamer, the umber sum of each component is 100.
Curing transparent feel photopolymer resin comprises each component of following parts by weight: 30～50 parts of film-forming resins, 1～10 part of emulsion, 0.1～5 part of stabilizing agent, 0.1～5 part of levelling agent and 0.1～5 part of defoamer.
Film-forming resin is at least one in polymethylmethacrylate, linear phenolic resin, epoxy resin, crotonic acid, acrylate, vinyl ether and M Cr.Emulsion is at least one in diazobenzene quinone, diazo naphthoquinone ester, polyvinyl cinnamate, poly-Chinese cassia tree fork malonic acid glycol ester polyester, aromatic diazo salt, aromatic sulfonium salts, fragrant salt compounded of iodine and ferrocene salt.Solvent is tetrahydrofuran, methyl ethyl ketone, cyclohexanone, propylene glycol, N, dinethylformamide, ethyl cellosolve acetate, ethyl acetate and butyl acetate, toluene, dimethylbenzene, tripropylene glycol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, dipentaerythrite six acrylate, 1, at least one in 6-hexanediol methoxyl mono acrylic ester and ethoxylation neopentyl glycol methoxyl mono acrylic ester.Stabilizing agent is at least one in p-dihydroxy-benzene, p methoxy phenol, 1,4-benzoquinone, 2,6 one di-t-butyl cresols, phenothiazine and anthraquinone.Levelling agent is at least one in polyacrylate, acetate butyrate fiber, nitrocellulose and polyvinyl butyral.Defoamer be phosphate, fatty acid ester and organosilyl at least one.
Step S530, as shown in Figure 9, removes the diaphragm 630 on transparent bonding layer 610 surfaces, dry film 600 is fitted in to transparent substrates surface, and transparent bonding layer 610 is directly attached in transparent substrates 110, and conductive layer 620 is away from transparent substrates 110.
Because diaphragm 630 need to remove prior to diaphragm 640, to dry film 600 hot pressing are fitted in transparent substrates 110.Therefore, at design protection film 630 during with diaphragm 640, make viscous force between transparent bonding layer 610 and diaphragm 630 lower than the viscous force between conductive layer 620 and diaphragm 640.
Step S540, carries out patterned process to dry film 600: dry film 600 is exposed successively and developed, form the first touch-control electrode that many parallel interval are arranged.
As shown in Fig. 9-11, in the present embodiment, the transparent feel photopolymer resin that forms this dry film 600 is radical photoinitiator initiator system negative photosensitive resin,, there is chemical polymerization and be insoluble to developer solution in illumination place, but this photosensitive resin during polymerization reaction take place, can produce oxygen inhibition effect in air, therefore need to adopt double exposure mode to expose to dry film 600.When exposing for the first time; conductive layer 620 surfaces of dry film 600 are also provided with diaphragm 640, first do not remove this diaphragm 640, make the dry film 600 isolated air in surface; now because transparent bonding layer 610 has been attached in transparent substrates 110, so also isolated with oxygen.700 pairs of dry films 600 of mask plate that employing is selected according to the shape of the first touch-control electrode expose, and make drafting department be produced polyreaction by illumination.Then the diaphragm 640 of removing mask plate 700 and being arranged at dry film 600 surfaces.Directly dry film 600 is exposed for the second time, now, for exposing not by the region of illumination for the first time, surface is owing to contacting with air, because making dry film 600 be exposed to airborne surface reaction, oxygen inhibition effect not exclusively can be developed liquid corrosion, and due to not with air contact, can there is chemical polymerization and not be developed liquid corrosion in the following part in surface.The energy of exposure is larger for the second time, and the region of the following generation in its surface chemical polymerization is thicker.Therefore, can be by regulating exposure energy, can make in conductive layer 620 part except the first touch-control electrode can be developed liquid and melt erosion, can reduce again the difference in height of drafting department and background portion, avoid pattern to be not easy by identification.
As shown in figure 12, in other embodiments, the transparent feel photopolymer resin that forms this dry film 600 is positivity photosensitive resin matrix.That is, illumination place is dissolved in developer solution.Before dry film 600 is exposed, also comprise the step of the diaphragm 640 of removing conductive layer 620 surfaces.Then adopt the mask board to explosure of selecting according to the shape of the first touch-control electrode.Because illumination place is dissolved in developer solution, so in the time of will retaining the figure of the first touch-control electrode, should adopt the mask board to explosure with the first touch-control electrode shape complementation.In the present embodiment, can regulate reaction depth by adjusting exposure energy, thereby reduce the drafting department retaining and the difference in height that is dissolved in the background portion of developer solution, avoid pattern to be not easy by identification.
In the process that dry film 600 is exposed, exposure wavelength is 300nm～400nm, and exposure energy is 10mJ/cm
2～500mJ/cm
2.In the process that dry film after overexposure is developed, adopt the weak base salt solution that massfraction is 0.1%～10% to develop.Weak base salt can be sal tartari, sodium carbonate etc.
Step S550, solidifies dry film.
Can adopt the curing mode of heat curing or UV: while adopting heat curing mode to solidify, the temperature of heat curing is 80 ℃～150 ℃, admittedly the roasting time is 10min～60min.While adopting UV curing mode to solidify, it is 200mJ/cm that UV solidifies energy
2～2000mJ/cm
2.Transparent feel photopolymer resin has photosensitive property when fluid state or semi-cured state, and transparent feel photopolymer resin does not have photosensitive property when solid state.
The first conductive layer and transparent bonding layer that conductive layer 620 after solidifying and transparent bonding layer 610 are the touch base plate in present embodiment.
In the present embodiment; after obtaining the first conductive layer; first on the first conductive layer, paste diaphragm, then ITO layer is applied to photoresist, exposure-processed, development treatment, etch processes and stripping photoresist successively, form the second touch-control electrode that many parallel interval are arranged.Wherein, the first touch-control electrode is with second touch-control electrode is vertical arranges.Be appreciated that, in other embodiments, also can in transparent substrates, arrange before the step of dry film, first ITO layer be applied to photoresist, exposure-processed, development treatment, etch processes and stripping photoresist successively, form the second touch-control electrode that many parallel interval are arranged.Wherein, the first touch-control electrode is with second touch-control electrode is vertical arranges.
In the present embodiment, be also included in the step that a side that touch base plate has the first conductive layer arranges adjustable refractive index layer, adjustable refractive index layer is overlay pattern portion and background portion simultaneously.
In the present embodiment, be also included in the step that touch base plate has a side formation protective seam of the first conductive layer, protective seam is overlay pattern portion and background portion simultaneously.
Transparent optical glue-line 200 is located at touch base plate 100 1 sides.
Protection panel 300 is located at transparent optical glue-line 200 away from a side of touch base plate 100.
Transparent optical glue-line 200 is for touch base plate 100 and the protection panel 300 of boning.
In the present embodiment, transparent optical glue-line 200 is located on the second conductive layer 140.As shown in figure 13, be appreciated that in other embodiments, transparent optical glue-line 200 also can be located on the first conductive layer 120.
In other embodiments, as shown in Figure 6, touch base plate 400 can only include transparent substrates 410 and conductive layer 420.Now, transparent optical glue-line 200 can be located at conductive layer 420 or be located in the side of transparent substrates 410 away from conductive layer 420.
In the present embodiment, the material of protection panel 300 can be glass, sapphire, carbonic acid polyester, polyethylene terephthalate or poly-first acrylic acid formicester.The thickness of protection panel 300 is 0.1mm～2.5mm.Further, the thickness of protection panel 300 is preferably 0.3mm～0.7mm.
Conductive grid in the first conductive layer 120 of above-mentioned touch base plate 100 is coated by matrix 122, thereby makes above-mentioned the first conductive layer 120 can avoid preferably scratching, and is not easy to damage.Greatly reduce the chance that conductive grid contacts with air simultaneously, make above-mentioned the first conductive layer 120 be not easy oxidized.Therefore, above-mentioned touch-screen 10 has better electric conductivity.And the conductive grid that is cross-linked to form with electrical-conductive nanometer silk thread 124 of above-mentioned the first conductive layer 120 realizes conduction, with respect to ITO conductive layer, it has relatively low resistivity.And electrical-conductive nanometer silk thread 124 is better with respect to ITO pliability, thereby make above-mentioned touch-screen 10 there is good bending resistance folding endurance.In addition, the conductive grid that electrical-conductive nanometer silk thread 124 is cross-linked to form be take matrix 122 as carrier, when making the first conductive layer 120, directly by exposure imaging, can obtain, and without the step of extra coating, stripping photoresist, can simplify technique.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (20)
1. a touch-screen, is characterized in that, comprising:
Touch base plate, comprise transparent substrates, be located at described transparent substrates one side the first conductive layer, be located at the transparent bonding layer between described transparent substrates and described the first conductive layer and be located at the second touch-control electrode in described transparent substrates; Described the first conductive layer comprises matrix and embeds the electrical-conductive nanometer silk thread in described matrix, and described electrical-conductive nanometer silk thread is cross-linked to form conductive grid; Described matrix is curing transparent feel photopolymer resin, and described the first conductive layer is patterned and forms a plurality of the first touch-control electrodes; Described the first touch-control electrode and described the second touch-control electrode are respectively used to determine X axis coordinate and the Y-axis coordinate of touch point;
Protect panel, be located at a side of described touch base plate; And
Transparent optical glue-line, is located between described touch base plate and described protection panel, for described touch base plate and the protection panel of boning.
2. touch-screen according to claim 1, is characterized in that, the thickness of described transparent substrates is 0.02mm～0.5mm.
3. touch-screen according to claim 2, is characterized in that, the thickness of described transparent substrates is 0.05mm～0.2mm.
4. touch-screen according to claim 1, is characterized in that, the thickness of described the first conductive layer is 0.05 μ m～10 μ m.
5. touch-screen according to claim 4, is characterized in that, the thickness of described the first conductive layer is 0.08 μ m～2 μ m.
6. touch-screen according to claim 1, is characterized in that, the sheet resistance of described the first conductive layer is 0.1 Ω/～500 Ω/, and described electrical-conductive nanometer silk thread is gold nano silk thread, silver nanoparticle silk thread, Cu nanowire line, aluminium nanometer silk thread or carbon nanometer silk thread.
7. touch-screen according to claim 6, is characterized in that, the sheet resistance of described the first conductive layer is 50 Ω/～200 Ω/.
8. touch-screen according to claim 1, is characterized in that, the diameter of described electrical-conductive nanometer silk thread is 10nm～1000nm, and length is 20nm～50 μ m.
9. touch-screen according to claim 1, is characterized in that, the described electrical-conductive nanometer silk thread of part exposes outside the side of described the first conductive layer away from described transparent substrates.
10. touch-screen according to claim 1, is characterized in that, the material of described transparent bonding layer is identical with the material of described matrix.
11. touch-screens according to claim 1, is characterized in that, the thickness of described transparent bonding layer is 0.5 μ m～50 μ m.
12. touch-screens according to claim 1, is characterized in that, also comprise adjustable refractive index layer; Described adjustable refractive index layer is located at the side that described touch base plate has described the first conductive layer, and the refractive index of described adjustable refractive index layer is 1.6～2.8.
13. touch-screens according to claim 12, is characterized in that, the material of described adjustable refractive index layer is TiO
2, Nb
2o
5or 1,3,5-triazines-2,4,6-, tri-aminated compoundss.
14. touch-screens according to claim 1, is characterized in that, also comprise protective seam; Described protective seam is located at the side that described touch base plate has described the first conductive layer.
15. touch-screens according to claim 14, is characterized in that, described protective seam is 0.1 μ m～10 μ m away from a side and described first conductive layer of described transparent substrates away from the distance between a side of described transparent substrates.
16. touch-screens according to claim 1, is characterized in that, described touch base plate also comprises the second conductive layer of being located at described transparent substrates opposite side, and described the second touch-control electrode is formed by described the second conductive layer pattern; Described the first touch-control electrode is strip, a plurality of described the first touch-control electrode parallel interval are arranged, described the second touch-control electrode is strip, and a plurality of described the second touch-control electrode parallel interval are arranged, and described the second touch-control electrode is with described first touch-control electrode is vertical arranges.
17. touch-screens according to claim 16, is characterized in that, the structure of described the first touch-control electrode and material are identical with structure and the material of described the second touch-control electrode.
18. touch-screens according to claim 16, is characterized in that, described the second conductive layer is ITO conductive layer, metal grill conductive layer, graphene conductive layer, carbon nanotube conducting layer or conducting polymer conductive layer.
19. touch-screens according to claim 1, it is characterized in that, described the second touch-control electrode is also formed by described the first conductive layer pattern, a plurality of described the first touch-control electrodes extend longitudinally respectively and arrange lateral separation, described in each, the first touch-control electrode coordinates and is used for intercoupling formation coupling capacitance with some described the second touch-control electrodes, is longitudinally spaced with some described the second touch-control electrode that described in each, the first touch-control electrode coordinates.
20. touch-screens according to claim 19, is characterized in that, described the first touch-control electrode and described the second touch-control electrode are pectination, and described the first touch-control electrode and some described the second touch-control electrodes are mutually chimeric.
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|---|---|---|---|
| CN201410239386.1A CN104020882A (en) | 2014-05-30 | 2014-05-30 | Touch screen |
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Application publication date: 20140903 |