CN203930740U - Curved surface touch-control shows module and wearable device - Google Patents

Abstract

The utility model relates to touch technology field, and particularly a kind of curved surface touch-control shows module and adopts this curved surface touch-control to show the wearable device of module.Curved surface touch-control shows a module, comprises a cover plate, has the second surface that first surface is relative with described first surface, and described first surface is touch surface; One display unit, comprises polaroid and optical module, and described polaroid is between described second surface and described optical module; One nano-silver thread conductive layer, is arranged on described polaroid and between described polaroid and described optical module; After described polaroid deformation, the curvature of described nano-silver thread conductive layer and described polaroid is greater than 0, compresses described nano-silver thread conductive layer.A wearable device, comprises driving and controls module and curved surface touch-control as above demonstration module, drives control module to be electrically connected this curved surface touch-control and shows module.

Description

Curved surface touch-control shows module and wearable device

[technical field]

The utility model relates to touch technology field, and particularly a kind of curved surface touch-control shows module and adopts this curved surface touch-control to show the wearable device of module.

[background technology]

Touch control device is subject to the favor of telecommunications industry gradually because of advantages such as its convenient operation, imaging are effective, function diversification, and is widely used on the products such as information system equipment, home appliance, communication apparatus, personal portable.

Follow in recent years touch-screen in the rapid emergence of communications industry, flourish in mobile communication industry particularly, touch-screen becomes the first-selected product of imaging display apparatus now at one stroke.The touch-screen that utilization rate is the highest is mainly resistive touch screen and capacitive touch screen, but user for controllability, the consideration of ease for use and appearance, can select capacitive touch screen as its best preferred unit mostly.

At traditional intelligence mobile phone, in the capacitance type touch-control panel of iphone etc., the material of touch-control electrode is generally tin indium oxide (referred to as ITO).The transmittance of ITO is very high, and electric conductivity is better, and widespread use is the conductive electrode material of current contact panel and display panel.But ITO also has its obvious defect, the conductive electrode that ITO forms is very crisp, lacks pliability, is not suitable for as on the curved surfaces such as iwatch or flexible touch screen.

In addition, in manufacture method, ITO originally needs vacuum chamber, higher depositing temperature and/or high annealing temperature to obtain high conductance, causes the integral manufacturing cost of ITO very expensive.And, a little less than ito thin film is highly brittle, even also very easy destroyed in the bending that runs into less physical stress, under the tide of the emerging produce market therefore emerging gradually at wearable device, ITO material can not have been dealt with the demand in market as conductive material and be eliminated gradually.

Just because of this, industrial community is being devoted to develop the equivalent material of ITO always, and wherein nano-silver thread (silver nano wires is called for short SNW) starts to substitute ITO as a kind of brand-new material and becomes preferred conductive material.SNW is a kind of of the current maturation the most of many ITO equivalent material.Nano-silver thread has the good electric conductivity of silver, while is due to the size effect of its Nano grade, make it there is excellent light transmission and flexible resistance, therefore can be used as and preferably substitute ITO as the material of touch-control electrode, realize the curved surface touch-control based on nano-silver thread.

Although nano-silver thread itself has good flexible resistance, when the conductive film forming at nano-silver thread is used for curved surface touch-control, also must deal carefully with quadric stress for the impact of nano-silver thread.In nano-silver thread conductive film, film substrate is generally micron level, as the PET of 125 μ m, and the nano-silver thread thickness being formed on base material is generally Nano grade, as 100nm, when crooked to nano-silver thread conductive film, even if degree of crook is very little, the stress producing when crooked is for adhering between PET and nano-silver thread, and the overlap joint between nano-silver thread all can produce larger impact.Especially when this stress is outside tension, it is for adhering between PET and nano-silver thread, and the impact of the overlap joint between nano-silver thread is even more serious.

Simultaneously, because the reflecting ratio ITO of nano-silver thread is high, while adopting nano-silver thread as touch-control electrode, contact panel visually there will be white mist phenomenon, if adopt the laminating type of tension formula, nano-silver thread from human eye more close to, white mist phenomenon is more obvious, thereby affects outward appearance and the penetrability of contact panel.

[utility model content]

For overcoming existing nano-silver thread, substitute ITO as many difficult problems of new conductive material, the utility model provides a kind of curved surface touch-control that can solve a described difficult problem to show module and adopt this curved surface touch-control to show the wearable device of module.

The scheme of the utility model technical solution problem is to provide a kind of curved surface touch-control and shows module, comprises a cover plate, has the second surface that first surface is relative with described first surface, and described first surface is touch surface; One display unit, comprises polaroid and optical module, and described polaroid is between described second surface and described optical module; One nano-silver thread conductive layer, is arranged on described polaroid and between described polaroid and described optical module; After described polaroid deformation, the curvature of described nano-silver thread conductive layer and described polaroid is greater than 0, compresses described nano-silver thread conductive layer.

Preferably, the Thickness Ratio of the thickness of described polaroid and described nano-silver thread conductive layer is greater than 100, and after described polaroid deformation, nano-silver thread conductive lamination shrinkage is 0-25%.

Preferably, the refractive index of described polaroid is 1.52-1.79.

Preferably, the transmittance of nano-silver thread conductive layer is at least 90%, and mist degree is no more than 5%, and thickness is 50nm-200nm, and refractive index is 1.35-1.8.

Preferably, described nano-silver thread conductive layer comprises a matrix and is distributed in many nano-silver threads in matrix, and described many nano-silver threads overlap formation conductive network mutually, and the line length of described every nano-silver thread is between 20-50 μ m, wire diameter is less than 50nm, and length breadth ratio is greater than 400.

Preferably, also comprise a high index of refraction bonding coat, high index of refraction bonding coat is between cover plate and polaroid, and the refractive index of described high index of refraction bonding coat is 1.52-1.79, and the coating rate of the coated area of described high refractive index layer on nano-silver thread conductive layer surface is not less than 50%.

Preferably, also comprise adhesion promoting layer, be arranged between nano-silver thread conductive layer and polaroid, the expansion coefficient of adhesion promoting layer is less than the expansion coefficient of polaroid.

Preferably; the protective seam that also comprises transparent insulation; be attached at nano-silver thread conductive layer surface; comprise transparent sticky material and transparent dielectric material; sticky material is photonasty sticker or thermosetting sticker; dielectric material is selected from any one or its combination of pi, silicon dioxide, nitrogen Si oxide, epoxy resin, acrylic polymkeric substance; the refractive index of described protective seam is less than the refractive index of described nano-silver thread conductive layer, and the refractive index of described nano-silver thread conductive layer is less than the refractive index of polaroid.

A wearable device, comprises driving and controls module and curved surface touch-control as above demonstration module, drives control module to be electrically connected this curved surface touch-control and shows module.

Compared with prior art, curved surface touch-control of the present utility model shows module and adopts this curved surface touch-control to show that the touch-control electrode material of the wearable electronic of module replaces with nano-silver thread material by traditional ITO material, conductive effect is better, cost is lower, in the curved surface touch technology field that the better nano-silver thread of outward appearance visual effect updates up till now, cater to and the developing direction of leading touch-control product gradually the beneficial effect of forward-looking and market dominance.

Curved surface touch-control of the present utility model shows that module is mainly used on wearable intelligent electronic device, and in environment for use, whole layer structure more easily causes small deformation.The utility model carries the base material of the direct place of flexible of polaroid of display unit of nano-silver thread conductive layer, and nano-silver thread conductive layer is positioned at the below of polaroid, the nano-silver thread conductive layer that should occur tension becomes by polaroid deformation and produces compressive stress.So, conversion by tension to compressive stress, although can't play great effect on the conductive layer of conventional I TO, but for nano-silver thread conductive layer, its inside is to have a lot of thread nano-silver threads to dissolve in matrix, the final embodiment of electric conductivity is that the mutual overlap joint of inner a plurality of nano-silver threads realizes, and the good degree of overlap joint is except outside the Pass the quantity with nano-silver thread has, also closely related with inner tightness degree.When nano-silver thread conductive layer bears compressive stress due to deformation, between many inner nano-silver threads, extruding overlaps mutually, and bond strength and overlap joint density are increased, and cause conductance to be fallen, is largely increased.Under the effect of compressive stress, also can make nano-silver thread conductive layer and polaroid mutually more close, thereby strengthen adhesion between the two, significantly reduce adhesive performance requirement between nano-silver thread conductive layer and polaroid.

From solving the angle of nano-silver thread mist degree, the utility model will not have the one side of polaroid of nano-silver thread conductive layer near touch face, nano-silver thread conductive layer is moved to and is positioned at behind polaroid below by the polaroid top of being positioned at of common structure, by the covering of polaroid top sandwich construction, lower the light diffusion of nano-silver thread on nano-silver thread conductive layer, thereby reduce the mist degree of nano-silver thread conductive layer.In addition, the utility model improves adhesion-layer materials, select cover plate and the polaroid on the next bonding upper strata of bonding coat-OCA glue of high index of refraction, high index of refraction bonding coat is positioned on the nano-silver thread conductive layer of nano-silver thread material, can effectively reduce the reflection of nano-silver thread conductive layer, solve the obvious problem of nano-silver thread mist degree.Meanwhile, with the OCA glue of high index of refraction, without the extra high refractive index layer that increases, be also conducive to reduce the thickness that curved surface touch-control shows module, obtain lightening effect.

From the lightening angle of product; the protective seam that the utility model the 4th embodiment adopts mixed materials to make; this protective seam has stickability and optical processing characteristic concurrently; on sheet building, no longer need independent high index of refraction bonding coat; with the optical processing layer of processing mist degree problem; thereby can reduce the integral thickness of screen body, realize the mist degree problem that product can also solve nano-silver thread conductive layer lightening time.

More excellent embodiment five of the present utility model makes the requirement with certain refractive index by polaroid and carried afterwards nano-silver thread conductive layer, save unnecessary optical processing layer structure, directly by polaroid, on the one hand nano-silver thread conductive layer is carried out to optical processing, solve its mist degree problem, on the one hand at its lower surface carrying nano-silver thread conductive layer, save optical processing layer and base material, reduce product integral thickness and meet lightening demand.So, kill two birds with one stone, become optimal solution.

[accompanying drawing explanation]

Fig. 1 is the cross section structure schematic diagram of the utility model nano-silver thread film.

Fig. 2 is the floor map of the utility model nano-silver thread film.

Fig. 3 is the blast structural representation that the utility model the first embodiment curved surface touch-control shows module.

Fig. 4 is that the utility model the first embodiment curved surface touch-control shows when the conductive layer of module is positioned on polaroid, after polaroid deformation, and the deformed state schematic diagram of conductive layer.

Fig. 5 is that the utility model the first embodiment curved surface touch-control shows when the nano-silver thread conductive layer of module is positioned under polaroid, after polaroid deformation, and the deformed state schematic diagram of conductive layer.

Fig. 6 is the method for making process flow diagram that the utility model the second embodiment curved surface touch-control shows module.

Fig. 7 is the blast structural drawing that the utility model the 3rd embodiment curved surface touch-control shows module, increases by an adhesion promoting layer between nano-silver thread conductive layer and polaroid.

Fig. 8 is that the utility model the 4th embodiment curved surface touch-control shows that the blast structural drawing of module increases by a protective seam under nano-silver thread conductive layer.

Fig. 9 is the blast structural drawing that the utility model the 5th embodiment curved surface touch-control shows module.

Figure 10 is the blast structural drawing that the utility model the 6th embodiment curved surface touch-control shows module.

Figure 11 adopts the utility model curved surface touch-control to show the schematic diagram of the wearable device that module is made.

[embodiment]

In order to make the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing and embodiment, the utility model are further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

Refer to Fig. 1 and Fig. 2, it is the structural representation that dissects of nano-silver thread conductive film 800, nano-silver thread conductive layer 805 is generally produced on substrate 807, comprises the many nano-silver threads 801 that are embedded in matrix 803, and nano-silver thread 801 is arranged in matrix 803 and mutually overlaps and form conductive network.Nano-silver thread 801 (silver nano wires, abbreviation SNW) line length is 10-300 μ m, preferred 20-100 μ m, preferably its length is 20-50 μ m, the wire diameter of nano-silver thread 801 (or live width) is less than 500nm or is less than 200nm, 100nm, be preferably and be less than 50nm, and its length breadth ratio ratio of wire diameter (line length with) is greater than 10, be preferably greater than 50, more preferably greater than 100, be greater than 400.Substrate 807 is generally transparent insulation material, can be glass, polyimide (Polyimide, PI), polymethylmethacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET) etc., but not as limit.

Silver is silvery white metal under general state, and is opaque material, and electric conductivity is splendid.And when silver is made nano-silver thread 801, nano-silver thread 801 has good transmittance and splendid electric conductivity, can be good at applying to the touch-control electrode of touch-screen.

Matrix 803 refers to that the solution containing nano-silver thread 801 is being arranged on substrate 807 through methods such as coatings, after heating, drying makes volatile material volatilization, stays non-nano silver line 801 materials on substrate 807.Nano-silver thread 801 scatters or embeds wherein, forms conductive network, and part nano-silver thread 801 is outstanding from matrix 803 materials.Nano-silver thread 801 relies on matrix 803 to form nano-silver thread conductive layer 805, and matrix 803 can protect nano-silver thread 801 to avoid the impact of the external environments such as burn into wearing and tearing.

The thickness of nano-silver thread conductive layer 805 is about 10nm-5 μ m, is preferably 20nm-1 μ m, and more excellent is 50nm-200nm.In certain embodiments, the refractive index of nano-silver thread conductive layer 805 is 1.3-2.5, and more excellent is 1.35-1.8.

Containing the solution of nano-silver thread 801, refer to, nano-silver thread 801 is dispersed in specific solvent and the aaerosol solution forming, and this solvent can be water, aqueous solution, solion, saline solns, supercritical fluid, oil or its potpourri etc.In this solvent, also can contain other adjuvant, as spreading agent, surfactant, crosslinking chemical, stabilizing agent, wetting agent or thickening agent, but not as limit.

In addition, can, by selecting suitable matrix 803 materials to adjust the optical characteristics of nano-silver thread conductive layer 805, particularly solve mist degree problem.For example, matrix 803 can be adjusted into refractive index, component and certain thickness with expectation, can effectively reduce reflection loss, dazzle impact, mist degree.

Mist degree refers to cloud or the muddy outward appearance causing due to nano-silver thread 801 surface light diffusion in nano-silver thread conductive layer 805.The mist degree problem of screen can cause in the situation that outdoor scene light irradiates, and screen reflection light intensity is strong, can make user not see screen in the time of serious.

The transmittance of nano-silver thread conductive layer 805 or sharpness can limiting by following parameter quantitative: transmittance and mist degree.Transmittance refers to that, by the number percent of the incident light of medium transmission, the transmittance of nano-silver thread conductive layer 805 is at least 90%, even can be up to 95%-97%.Mist degree is light diffusing index, and mist degree refers to be separated in incident light and the quantity number percent of the light of scattering in the process of transmission.In embodiment of the present utility model, mist degree can not surpass 5%, even can reach and be no more than 3%-1.5%.

Refer to Fig. 3, the curved surface touch-control of the first embodiment of the present utility model shows that module 10 comprises cover plate 101, nano-silver thread conductive layer 103, high index of refraction bonding coat 105 and display unit 107.Its cover plate 101 and touch object contact,

Display unit 107 comprises polaroid 1071 and optical module 1073, polaroid 1071 be positioned at optical module above (herein and described later " on " or D score be relative position, be not absolute definition, below becoming while putting upside down above can be understood as) simultaneously yet.Cover plate upper surface 1011 is touch objects contact level, and cover plate lower surface 1013 can be used as the polaroid 1071 of the direct bonding display unit 107 of attachment surface, and nano-silver thread conductive layer 103 direct forming are on the lower surface of polaroid 1071.High index of refraction bonding coat 105 is for the polaroid 1071 and cover plate lower surface 1013 of bonding display unit 107.High index of refraction bonding coat 105 can be selected OCA (optical lens gelatin, Optical Clear Adhesive) or LOCA (liquid optical lens gelatin, Liquid Optical Clear Adhesive).Meanwhile, as a kind of distortion, nano-silver thread conductive layer 103 also can direct forming or is bonded on cover plate lower surface 1013.

So-called curved surface touch-control shows module 10, refer to after being used on wearable equipment, cover plate 101 and inner nano-silver thread conductive layer 103 and display unit 107 are on-plane surface, such as while being applied on intelligent watch, after wrist-watch is worn on hand, the table ring of its inside and display all can present bending to a certain extent, and this just requires to show that as the curved surface touch-control at man-machine control interface module 10 also presents the bending of certain curvature.The environment that the size of concrete curvature can be used according to wearing equipment is different and different, but with the flat board of present use, the display screens such as mobile phone are different, its curvature must be greater than 0.The curvature that comprises cover plate 101, the curvature of the curvature of nano-silver thread conductive layer 103 and display unit 107 inner layer structures.

In the present embodiment, nano-silver thread conductive layer 103 can be Fig. 1, during nano-silver thread conductive layer 805 shown in Fig. 2, in order to realize the detection to multi-point touch, on the nano-silver thread conductive layer 103 in the present embodiment, can form a touch-control electrode pattern (not shown) by methods such as laser or etchings.Polaroid 1071 can be Fig. 1, substrate 807 materials shown in Fig. 2.

Nano-silver thread conductive layer 103 is formed on polaroid 1071.Polaroid 1071 can be made for flexible material, as selects pliability flexible material to make, and refers to industrial and has some strength and have certain flexual substrate.Include but not limited to PI (polyimide), PC (polycarbonate), polyethersulfone (PES), polymethylmethacrylate (PMMA), acryl, acrylic nitrile-butadiene-styrene (ABS), polyamide (PA), polybenzimidazoles polybutylene (PB), polybutylene terephthalate (PBT), polyester (PE), polyetheretherketone (PEEK), polyetherimide (PEI), polyetherimide, tygon (PE), polyethylene terephthalate (PET), polystyrene (PS), teflon (PTFE), polyurethane (PU), Polyvinylchloride (PVC) etc.

Polaroid 1071 embeds fine nano-silver thread 801 owing to will brushing, being coated with, and is to use in the structure of curved surface touch-control, and polaroid 1071 can bear larger, more Bending Deformation, so be preferably flexible PET material as polaroid 1071.

In addition, in order to increase polaroid 1071 viscosity, at polaroid 1071 upper surfaces, set up an adhesive coating (not shown), so that polaroid 1071 is firmly pasted on cover plate lower surface 1013, better nano-silver thread conductive layer 103 is pasted and fixed on polaroid 1071 simultaneously.Be necessary explanation, because described polaroid 1071 is made for flexible material, therefore, in mobile or handling process, unavoidably there is deformation or bending in flexible material, therefore adopts the nano-silver thread conductive layer 103 that embeds or imbed more reliable.

Except increasing one deck adhesive coating, can produce as above effect, the polaroid of PET material 1071 lower surfaces can also be carried out to activity processes, such as increase its viscosity or increase its softness, object is after nano-silver thread conductive layer 103 is attached on polaroid 1071, strengthens the adhesion between polaroid 1071 and nano-silver thread conductive layer 103.The effect that the processing of the characteristic of polaroid 1071 presents on plane touch-control structure is not very obvious, but show on module 10 at curved surface touch-control of the present utility model, because the overwhelming majority is for wearable equipment, there will be frequent wearing and curved surface touch-control shown to the number of bends of module 10 and intensity all how a lot of opposite planar touch-control structure is, so be easy to occur the bad problem of adhesion between nano-silver thread conductive layer 103 and polaroid 1071, cause nano-silver thread conductive layer 103 to come off, affect touch-control precision.When increasing adhesive coating or processing polaroid 1071 is active, strengthen after the adhesion between nano-silver thread conductive layer 103 and polaroid 1071, effect on curved surface touch-control demonstration module 10 is by highly significant, curved surface touch-control demonstration module 10 is applied on wearable equipment and no longer occurs the problem that nano-silver thread conductive layer 103 is easily offset or comes off, making wearable equipment come into more fast electronic consumer markets becomes possibility.

Refer to Fig. 4, suppose nano-silver thread conductive layer 103 to be placed on polaroid 1071 tops.Under normal circumstances, nano-silver thread conductive layer 103 thickness are 50nm-200nm, and the thickness of the polaroid 1071 of PET material is 20 μ m-150 μ m, the thickness of polaroid 1071 is 100-3000 times more than of nano-silver thread conductive layer thickness, when using curved surface touch-control to show that module 10 is made as wearable device, polaroid 1071 can or be dressed due to external force needs to occur miniature deformation, although this deformation is very small concerning polaroid 1071, but for the nano-silver thread conductive layer 103 being shaped on it, deformation quantity will amplify 100-3000 times more than, because nano-silver thread conductive layer 103 is positioned at polaroid 1071 tops, when polaroid 1071 occurs after miniature deformation, can make the nano-silver thread conductive layer 103 that is positioned at polaroid 1071 tops bear larger tension, and make nano-silver thread conductive layer 103 on Width, bear larger tensile deformation amount.As shown in Figure 4, the sectional width of nano-silver thread conductive layer 103 can be drawn as L1 size by the L size before deformation, so that this tension is no longer firm with adhering to of nano-silver thread conductive layer 103 for polaroid 1071, on nano-silver thread conductive layer 103, between many nano-silver threads 801 of deposition, overlap distance becomes large, overlap joint deleterious, finally makes the conductance of nano-silver thread conductive layer 103 sharply decline.In order better to address the above problem, curved surface touch-control of the present utility model shows that module 10 is placed on polaroid 1071 belows by nano-silver thread conductive layer 103.

Refer to Fig. 5, the width of polaroid 1071 produces after miniature deformation, because nano-silver thread conductive layer 103 is positioned at polaroid 1071 belows, tensile deformation amount on polaroid 1071 Widths is exaggerated after 100-1000 times, conduct to the nano-silver thread conductive layer 103 of below, and make nano-silver thread conductive layer 103 on Width, produce compressive stress by a relatively large margin, cause nano-silver thread conductive layer 103 compressed, many inner silky nano silver line 801 overlap joints are tightr, and electric conductivity is better.As shown in the figure, the sectional width of nano-silver thread conductive layer 103 can be compressed to L2 size by the L size before deformation.

According to the empirical theory under perfect condition, can draw, when nano-silver thread conductive layer 103 is placed on polaroid 1071 top, the extensibility of nano-silver thread conductive layer 103 is about and is greater than 0, is less than 15%.When nano-silver thread conductive layer 103 is placed on polaroid 1071 bottom, after polaroid 1071 deformation, the compressibility of nano-silver thread conductive layer 103 is about and is greater than 0, be less than 20%, extensibility and compressibility also can be according to the Thickness Ratios of polaroid 1071 and nano-silver thread conductive layer 103, and the physical size of polaroid 1071 changes to some extent, the extensibility of nano-silver thread conductive layer 103 also can be increased to and be greater than 0, is less than 30%.The compressibility of nano-silver thread conductive layer 103 also can be increased to and be greater than 0, is less than 25%.In this case, when by nano-silver thread conductive layer 103, the top by polaroid 1071 moves to behind the below of polaroid 1071, the deformation quantity of nano-silver thread conductive layer 103 can at least change 0%-35%.

When nano-silver thread conductive layer 103 is after tensile deformation becomes compression set, many inner silky nano silver line 801 overlap joints are tightr, electric conductivity can be significantly improved, according to gedanken experiment data, can obtain, when nano-silver thread conductive layer 103 is placed on polaroid 1071 top, the miniature deformation of polaroid 1071 can make the conductance decline 5%-20% of the nano-silver thread conductive layer 103 of nano-silver thread 801 making, concrete numerical value increases and also has larger change according to the amplitude of deformation, even can be up to 50%.When nano-silver thread conductive layer 103 is positioned under polaroid 1071, between the nano-silver thread conductive layer 103 that the miniature deformation of polaroid 1071 can make nano-silver thread 801 make, bear compressive stress, the conductance of nano-silver thread conductive layer 103 will improve 0%-30%, concrete numerical value also has larger change according to the amplitude of deformation, even can be up to 30%-40%.

Meanwhile, the nano-silver thread conductive layer 103 after deformation, due to the compressive stress that inside exists, also can make nano-silver thread conductive layer 103 and polaroid 1071 mutually more close, thereby strengthens adhesion between the two.

Refer to Fig. 6, the curved surface touch-control that the utility model the second embodiment is above-described embodiment shows the manufacture method of module 10, and the method comprises the following steps:

S11 a: display unit 107 is provided, comprises polaroid 1071 and optical module 1073.Polaroid 1071 transparent insulations, described polaroid 1071 adopts pliability flexible material to make, and refers to industrial and has some strength and have certain flexual material.

S12: nano-silver thread conductive layer 103 is shaped on a wherein surface of described polaroid 1071.Best mode is that nano-silver thread conductive layer 103 is placed in to polaroid 1071 belows.After polaroid 1071 deformation, polaroid 1071 is bent with nano-silver thread conductive layer 103, make the curvature of the two be greater than 0, when below nano-silver thread conductive layer 103 is arranged on polaroid 1071, because polaroid 1071 and the Thickness Ratio of nano-silver thread conductive layer 103 are greater than 100-3000 doubly, and making nano-silver thread conductive layer 103 compressed, compressibility is at least 0-25%.

S13: the cover plate 101 that a transparent insulation is provided.Covering is positioned at polaroid 1071, nano-silver thread conductive layer 103 and the optical module 1073 under it.Described cover plate 101 adopts rigidity transparent insulation material, and wherein rigidity transparent insulation material can adopt tempered glass and pliability transparent panel.More particularly, glass or transparent plastic board that the process intensive treatment that described rigid material adopts is crossed, be called for short tempered glass or reinforced plastic plate.Wherein said tempered glass comprise there is anti-dazzle, sclerosis, the functional layer of anti-reflection or atomizing functions.Wherein, have the functional layer of anti-dazzle or atomizing functions, by the applying coating with anti-dazzle or atomizing functions, formed, coating comprises metal oxide particle; The functional layer with sclerosis function is formed or directly by chemistry or physical method, is hardened by the high-molecular coating coating with sclerosis function; The functional layer with anti-reflection function is titania coating, magnesium fluoride coating or calcium fluoride coating.Be appreciated that and adopt the good plastic plate of transmittance also can process and make rigidity transparent insulation substrate described in the utility model as above-mentioned tempered glass mode.Cover plate upper surface 1013 and touch-control medium contact, as touch surface.

S14: described polaroid 1071 and described cover plate 101 are pasted together by high index of refraction bonding coat 105.High index of refraction bonding coat 105 adopts OCA glue to apply, and when applying, can be coated in nano-silver thread conductive layer 103 surfaces, is to apply during coating comprehensively, is different from existing mode that needs frame to apply.The coated area of OCA glue is 100% of nano-silver thread conductive layer 103 surface areas, or 80%-90%, is minimumly not less than 50%.The reason that coating surface area is chosen is, when nano-silver thread conductive layer 103 is positioned on polaroid 1071, the material of nano-silver thread 801 own has mist degree problem.So high index of refraction bonding coat 105 applies into the optics glue-line of high index of refraction herein, the refractive index of this high index of refraction bonding coat 105 is 1.52-1.79, so that mist degree can be reduced to below 5% after being coated on nano-silver thread conductive layer 103, the best can be reduced to 3%, 2%, 1.5%.

Because OCA glue is when generally commonly using as cohesive action, its refractive index is 1.5 left and right, as being promoted to, having the more O C A glue of high index of refraction need to do special processing in technique, and higher with induced refractive index, technology difficulty is larger, and cost of manufacture is higher.

The refractive index of high index of refraction bonding coat 105 is 1.52-1.79, is preferably 1.7.While choosing, first can consider according to the manufacture craft of OCA glue, the 1.52nd, the refractive index of common OCA glue is minimum in cost of manufacture.If further promote its refractive index, difficulty can strengthen gradually, and when being increased to 1.79, continuing up to improve its difficulty will be very large, so comprehensive manufacture difficulty and input cost, 1.79 are the scope that the limit is large.

Be preferably at 1.7 o'clock, except with manufacture craft difficulty and cost mutually outside the Pass, also can be according to the density dependent of nano-silver thread 801 on nano-silver thread conductive layer 103, when nano-silver thread 801 density are when large, the refractive index optimum value of high index of refraction bonding coat 105 is just larger, is minimumly not less than 1.52.

In addition, also can be relevant to the material of polaroid 1071, when the polaroid 1071 of glass material has high reflection characteristic, the refractive index optimum value of high index of refraction bonding coat 105 is just larger, is minimumly not less than 1.52.

Refer to Fig. 7, the curved surface touch-control of the utility model the 3rd embodiment shows module 30, nano-silver thread conductive layer 303 is attached on polaroid 3071, and polaroid 3071 is pliability flexible material, polaroid 3071 due to be heated or produce that deformation allows nano-silver thread conductive layer 303 cannot be good during during temperature variation or as curved surface touch-control comprehensively cover polaroid 3071 belows, can between nano-silver thread conductive layer 303 and polaroid 3071, apply one deck adhesion promoting layer 302 especially, the coated area of adhesion promoting layer 302 is 100% of nano-silver thread conductive layer 303 surface areas, or 80%-90%, minimumly be not less than 50%, to take nano-silver thread conductive layer 303 surface areas that nano-silver thread 801 is shaped be benchmark to coated area herein, when nano-silver thread conductive layer 303 is greater than, while being less than or equal to polaroid 3071 surface area, coated area is 100% of nano-silver thread conductive layer 303 surface areas, or 80%-90%, minimumly be not less than 50%.

The expansion coefficient of described adhesion promoting layer 302 is less than the expansion coefficient of pliability polaroid 3071.Owing to being often accompanied by the variation of temperature in film forming manufacturing process; and have larger expansion coefficient during for flexible material when polaroid 3071; in the process that heats up, lowers the temperature, often have significant volume change; thereby the warpage or the distortion that make pliability polaroid 3071 produce the second bending direction; and then cause and expose or the problem of poor focusing; the existence of described adhesion promoting layer 302, can be good at addressing the above problem.

The material of described adhesion promoting layer 302 can be selected from high molecular polymer, insulating material, resin, transparent optical cement, oxide, class photoresistance etc., include but not limited to: polyacetylene, polyaniline, polyarylene, polythiophene, Graphene, pentacene, polyhenylene ether (PPE), polyparaphenylene's acetylene (PPV), poly-3, 4-ethylidene dioxy fen (PEDOT), polystyrolsulfon acid (PSS), poly-3-hexyl thiophene (P3HT), poly-3-octyl group thiophene (P3OT), polyether sulphone, poly-C-61-butyric acid-methyl esters (PCBM), poly-[2-methoxyl-5-(2-ethyl-own oxygen base)-1, 4-phenylene ethylene] (MEH-PPV), silicon nitride, the materials such as silicon dioxide or their combination in any.

Described adhesion promoting layer 302 is coated in polaroid 3071 tops with the form of fluid, and described fluid can be: water, aqueous solution, solion, supercritical fluid, plasma, oil or their combination in any.Include but not limited to: water, acetone, ethyl acetate, ethanol, butyl acetate, amylalcohol, phenolics, alkyd resin, NaOH, isopropyl ether (i-propyl ether), isopropyl alcohol, methyl ethyl ketone (or MEK), methyl formate, methyl n-butyric acie ester, normal butyl alcohol, octane, sherwood oil, propyl alcohol or their combination in any.

Described fluid further also can comprise surfactant, spreading agent, stabilizing agent or bonding agent.

The method that described adhesion promoting layer 302 fluids are coated in polaroid 3071 tops comprises: sputter, electrostatic spraying, reverse roll coating, groove type coating, slit type coating, impression, hot transfer printing, (meyer rod) coating of Meyer rod, spin coating, serigraphy, photogravure, offset printing, hectographic printing, ink jet printing, intaglio printing, or their combination in any.

When concrete enforcement applies, first arrange after polaroid 3071, below apply adhesion promoting layer 302, regulate temperature, dry adhesion promoting layer 302, until adhesion promoting layer 302 semi-solid preparations or after solidifying, nano-silver thread 801 solution are coated to adhesion promoting layer 302 lower surfaces, after placing 60-80s, adjust the temperature to 140 ℃, to 303 oven dry of nano-silver thread conductive layer, and with roller, above gained film is carried out to roll extrusion, then cooling.

In another embodiment, the material of adhesion promoting layer 302 itself is the form of solid film.302 of adhesion promoting layers can be by being directly covered in polaroid 3071 tops to the form of solid film heating roll extrusion, and at this moment the material of adhesion promoting layer 302 includes but not limited to: polyvinyl butyral (PVB), polyvinyl alcohol (PVA) (PVA), polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), viscose paper etc.

Between nano-silver thread 801, simply by virtue of intermolecular force, overlap, easily slippage occurs deflecting under effect, provide adhesion promoting layer 302 to make the adhesion between nano-silver thread conductive layer 303 and polaroid 3071 good.Conventionally nano-silver thread 801 is more firm with adhering to of polaroid 3071, and the overlap joint between nano-silver thread 801 is more good, thereby good conductance is provided.Generally speaking, film forming manufacturing process is when carrying out, often can accompany variation with temperature, and pliability polaroid 3071 has larger expansion coefficient, in the middle of the process of cooling that heats up, often have significant volume change, during film forming manufacturing process, Chang Yinwei is adhered to the expansion of the pliability polaroid 3071 on hard substrate or contraction and the warpage or the distortion that make pliability polaroid 3071 produce the second bending directions, and then cause exposure or the burnt poly-problem such as bad, by adhesion promoting layer 302, solved the series of problems that expansion or contraction because of polaroid in pliability 3071 cause.

So, the curved surface touch-control of the 3rd embodiment shows that module 30 rhythmo structure from top to bottom comprises cover plate 301, high index of refraction bonding coat 305, polaroid 3071, adhesion promoting layer 302, the optical module 3073 of nano-silver thread conductive layer 303 and below successively.

Refer to Fig. 8; the curved surface touch-control of the utility model the 4th embodiment shows that module 40 comprises polaroid 4071; nano-silver thread conductive layer 403 and protective seam 408; protective seam 408 is covered in nano-silver thread conductive layer 403 lower surfaces; and the protective seam in the present embodiment 408 is stickability protective seam 408, general protective seam below needs to arrange layer of transparent optical cement, and described protective seam 408 is stickability protective seam 408; without transparent optical cement is set, is more conducive to curved surface touch-control and shows the lightening of module 40.The material of described protective seam 408 comprises transparent sticky material and transparent dielectric material.Described protective seam 408 is for the protection of nano-silver thread conductive layer 403, prevents that nano-silver thread conductive layer 403 surfaces are oxidized and electric conductivity reduces.Therefore, in the present embodiment, the high index of refraction bonding coat 105 in the first embodiment no longer exists, but be replaced with, has stickability, and the protective seam 408 of protection nano-silver thread conductive layer 403 effects.The refractive index of this protective seam 408 requires to require identical with the refractive index of high index of refraction bonding coat 105 in the first embodiment.Also identical with high index of refraction bonding coat 105 processing modes in the first embodiment while being coated in nano-silver thread conductive layer 403 surface.

The sticky material of described protective seam 408 is photonasty sticker or thermosetting sticker.Described photonasty sticker can be the photoresist that is suitable for lithography process, for example, and the photoresist that the polyacrylate that can absorb ultraviolet wavelength is or the photoresist of other light solidity.The material of described thermosetting sticker comprises epoxy resin or other thermally cross-linkables and in the compatible material of photonasty sticker.

Described dielectric material is selected from pi, silicon dioxide, nitrogen Si oxide, epoxy resin, acrylic polymkeric substance or its combination.

Described dielectric material is to be selected from the material own or comparatively compatible with polaroid 4071 with nano-silver thread conductive layer 403, can promote to a certain extent the bond strength of protective seam 408 and polaroid 4071 or nano-silver thread conductive layer 403.

Protective seam 408 compared to single material; the protective seam 408 being comprised of mixed materials can pass through the selection of different refractivity material; adapt to the contact panel requirement of different outward appearance demands; particularly; by adjusting protective seam 408 refractive indexes and thickness; its refractive index and the refractive index that is positioned at protective seam 408 upper and lower structures are matched, can improve the transmittance of contact panel, improve the problem of contact panel bad order.For example, transparent nano silver line conductive layer 403 has refractive index n 1, and protective seam 408 has refractive index n f, and polaroid 4071 has refractive index n T, and n1 is greater than nf and is less than nT, and the product of the better nf of approximating and nT is opened radical sign.

The protective seam 408 of making by this mixed materials has stickability and optical processing characteristic concurrently; make curved surface touch-control show that module 40 no longer needs high index of refraction bonding coat 105 and the optical processing layer in embodiment mono-on rhythmo structure; reduce the integral thickness that curved surface touch-control shows module 40, realizing product can also nano-silver thread conductive layer 403 mist degree problem lightening time.

So, the curved surface touch-control of the 4th embodiment shows that module 40 rhythmo structure from top to bottom comprises cover plate 401, polaroid 3071, nano-silver thread conductive layer 403, the optical module 4073 of protective seam 408 and below successively.

Refer to Fig. 9, the curved surface touch-control demonstration module 50 of the utility model the 5th embodiment is that the curved surface touch-control of the 4th embodiment shows that module 40 further improves, structurally show that with touch-control shown in embodiment tetra-difference of module 40 is: further polaroid 5071 is carried out to optical processing, make its as base material below the nano-silver thread conductive layer 503 that can be shaped, itself there is the optical characteristics with high index of refraction bonding coat 105 described in embodiment mono-simultaneously.Be specially:

The refractive index of polaroid 5071 is 1.52-1.79, is preferably 1.7.The reason of choosing of concrete refractive index can choosing with reference to high index of refraction bonding coat 105 refractive indexes in embodiment mono-.When polaroid 5071 is carried out after optical processing, mist degree can be reduced to below 5% after can making nano-silver thread conductive layer 503 be formed under polaroid 5071, the best can be reduced to 3%, 2%, 1.5%.

Protective seam 508 is arranged under nano-silver thread conductive layer 203 for only having viscosity, in the time of to 503 protection of nano-silver thread conductive layer, polaroid 5071 and cover plate 501 is bonded together.Certainly, protective seam 508 also can adopt the protective seam 408 of better the 4th embodiment of performance herein.Like this, can further improve the mist degree problem of nano-silver thread conductive layer 503.

Thus, be first without doing again one deck high index of refraction bonding coat, except cost of manufacture reduces, curved surface touch-control shows that the integral thickness of module 50 is reduced.Secondly, polaroid 5071 is simultaneously also as pliability flexible parent metal, nano-silver thread conductive layer 503 is formed in to its underpart, and the tension that also nano-silver thread conductive layer 503 can be produced after the micro-deformation of polaroid 5071 becomes compressive stress, strengthens electric conductivity and the adhesion of nano-silver thread conductive layer 503.In addition, the lip-deep protective seam 508 of nano-silver thread conductive layer 503 requires also to reduce, as long as it has the function that viscosity can realize bonding polaroid 5071 and cover plate 501 and protection nano-silver thread conductive layer 503.

Refer to Figure 10, the curved surface contact panel 60 of the utility model the 6th embodiment comprises successively from top to bottom on rhythmo structure, cover plate 601, high index of refraction bonding coat 605, polaroid 6071, the first conductive layer 603, the second conductive layers 604 and optical modules 6073.The first conductive layer 603, the second conductive layers 604 are nano-silver thread conductive layer 805.Be appreciated that the first conductive layer 603 herein, the second conductive layer 604 all can, for adopting the techniques such as photoetching, etching, gold-tinted processing procedure, impression the nano-silver thread conductive layer 805 shown in Fig. 1, Fig. 2 to be cut into the conductive pattern of different directions, form latticed conducting channel.For example, the first conductive layer 603 is that nano-silver thread conductive layer 805 is cut into the conductive layer forming after the conductive pattern of first axial (directions X); The second conductive layer 604 is that nano-silver thread conductive layer 805 is cut into the conductive layer forming after the conductive pattern of second axial (Y-direction).Between the first conductive layer 603 and the second conductive layer 604, a layer insulating is being set.

The first conductive layer 603 and the second conductive layer 604 that are positioned at polaroid 6071 belows occur after micro-deformation at polaroid 6071, and owing to being all positioned at the below of polaroid 6071, the first conductive layer 603 and the second conductive layer 604 are all compressed.After compression, nano-silver thread 801 overlapping rates of these both inside are higher, and conductance gets a promotion simultaneously.

Display unit 107 described in the utility model can be LCD display, light-emitting diode display, and OLED display, can also be used on plasma display, on color flat panel display, optoelectronic device etc.

Refer to Figure 11, curved surface touch-control of the present utility model shows that module 10 can be applied on some wearable devices 70, forms the intelligent watch in life, the similar wearable device 70 such as intelligent bracelet.In above-mentioned wearable device 70, described curved surface touch-control shows that module 10 fits in the top of display unit 107, one of them I/O equipment for wearable device 70 man-machine interactions, certainly wearable device 70 also can be integrated with control module, controls module and for conducting, connects and control curved surface touch-control demonstration module 10.Can easily understand, at described curved surface touch-control of the present utility model, show that module 10 also can be applicable to intelligent clothing, intelligent ornaments, intelligent glasses, smart bracelet, on the wearable electronic equipments of non-planar intelligence such as intelligent bangle.

Mainly with the curved surface touch-control demonstration module 10 of the first embodiment, state the effect that it has herein,, meeting on the topology layout basis of the present embodiment meanwhile, other embodiment also have same beneficial effect.

Compared with prior art, curved surface touch-control of the present utility model shows module 10 and adopts this curved surface touch-control to show that the touch-control electrode material of the wearable electronic 70 of module 10 replaces with nano-silver thread 801 materials by traditional ITO material, conductive effect is better, cost is lower, in the curved surface touch technology field that the better nano-silver thread 801 of outward appearance visual effect updates up till now, cater to and the developing direction of leading touch-control product gradually the beneficial effect of forward-looking and market dominance.

Curved surface touch-control of the present utility model shows that module 10 is mainly used on wearable intelligent electronic device, and in environment for use, whole layer structure more easily causes small deformation.The utility model carries the base material of the polaroid of display unit 107 1071 direct place of flexible of nano-silver thread conductive layer 103, and nano-silver thread conductive layer 103 is positioned at the below of polaroid 1071, the nano-silver thread conductive layer 103 that should occur tension becomes by polaroid 1071 deformation and produces compressive stress.So, conversion by tension to compressive stress, although can't play great effect on the conductive layer of conventional I TO, but for nano-silver thread conductive layer 103, its inside is to have a lot of thread nano-silver threads 801 to dissolve in matrix 803, the final embodiment of electric conductivity is that the mutual overlap joint of inner a plurality of nano-silver thread 801 realizes, and the good degree of overlap joint is except outside the Pass the quantity with nano-silver thread 801 has, also closely related with inner tightness degree.When nano-silver thread conductive layer 103 bears compressive stress due to deformation, between inner many nano-silver threads 801, extruding overlaps mutually, and bond strength and overlap joint density are increased, and cause conductance to be fallen, is largely increased.Under the effect of compressive stress, also can make nano-silver thread conductive layer 103 and polaroid 1071 mutually more close, thereby strengthen adhesion between the two, significantly reduce adhesive performance requirement between nano-silver thread conductive layer 103 and polaroid 1071.

From solving the angle of nano-silver thread 801 mist degrees, the utility model will not have the one side of polaroid 1071 of nano-silver thread conductive layer 103 near touch face, nano-silver thread conductive layer 103 is moved to and is positioned at behind polaroid 1071 belows by polaroid 1071 tops that are positioned at of common structure, by the covering of polaroid 1071 top sandwich constructions, lower the light diffusion of nano-silver thread 801 on nano-silver thread conductive layer 103, thereby reduce the mist degree of nano-silver thread conductive layer 103.In addition, the utility model improves adhesion-layer materials, select cover plate 101 and the polaroid 1071 on the next bonding upper strata of bonding coat 105 1 OCA glue of high index of refraction, high index of refraction bonding coat 105 is positioned on the nano-silver thread conductive layer 103 of nano-silver thread 801 materials, can effectively reduce the reflection of nano-silver thread conductive layer 103, solve the obvious problem of nano-silver thread 801 mist degree.Meanwhile, with the OCA glue of high index of refraction, without the extra high refractive index layer that increases, be also conducive to reduce the thickness that curved surface touch-control shows module 10, obtain lightening effect.

From the lightening angle of product; the protective seam 408 that the utility model the 4th embodiment adopts mixed materials to make; this protective seam 408 has stickability and optical processing characteristic concurrently; on sheet building, no longer need independent high index of refraction bonding coat 105; with the optical processing layer of processing mist degree problem; thereby can reduce the integral thickness of screen body, realize the mist degree problem that product can also solve nano-silver thread conductive layer 103 lightening time.

More excellent embodiment five of the present utility model makes the requirement with certain refractive index by polaroid 5071 and carried afterwards nano-silver thread conductive layer 503, save unnecessary optical processing layer structure, directly by polaroid 5071, on the one hand nano-silver thread conductive layer 803 is carried out to optical processing, solve its mist degree problem, on the one hand at its lower surface carrying nano-silver thread conductive layer 803, save optical processing layer and base material, reduce product integral thickness and meet lightening demand.So, kill two birds with one stone, become optimal solution.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing within principle of the present utility model, are equal to and replace and within improvement etc. all should comprise protection domain of the present utility model.

Claims (9)

1. curved surface touch-control shows a module, it is characterized in that, comprising:

One cover plate, has the second surface that first surface is relative with described first surface, and described first surface is touch surface;

One display unit, comprises polaroid and optical module, and described polaroid is between described second surface and described optical module;

One nano-silver thread conductive layer, is arranged on described polaroid and between described polaroid and described optical module;

After described polaroid deformation, the curvature of described nano-silver thread conductive layer and described polaroid is greater than 0, compresses described nano-silver thread conductive layer.

2. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: the Thickness Ratio of the thickness of described polaroid and described nano-silver thread conductive layer is greater than 100, and after described polaroid deformation, nano-silver thread conductive lamination shrinkage is 0-25%.

3. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: the refractive index of described polaroid is 1.52-1.79.

4. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: the transmittance of nano-silver thread conductive layer is at least 90%, and mist degree is no more than 5%, and thickness is 50nm-200nm, and refractive index is 1.35-1.8.

5. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: described nano-silver thread conductive layer comprises a matrix and is distributed in many nano-silver threads in matrix, described many nano-silver threads overlap formation conductive network mutually, the line length of described every nano-silver thread is between 20-50 μ m, wire diameter is less than 50n m, and length breadth ratio is greater than 400.

6. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: also comprise a high index of refraction bonding coat, high index of refraction bonding coat is between cover plate and polaroid, the refractive index of described high index of refraction bonding coat is 1.52-1.79, and the coating rate of the coated area of described high refractive index layer on nano-silver thread conductive layer surface is not less than 50%.

7. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: also comprise adhesion promoting layer, be arranged between nano-silver thread conductive layer and polaroid, the expansion coefficient of adhesion promoting layer is less than the expansion coefficient of polaroid.

8. curved surface touch-control as claimed in claim 1 shows module, it is characterized in that: the protective seam that also comprises transparent insulation, be attached at nano-silver thread conductive layer surface, comprise transparent sticky material and transparent dielectric material, sticky material is photonasty sticker or thermosetting sticker, dielectric material is selected from pi, silicon dioxide, nitrogen Si oxide, epoxy resin, any one or its combination of acrylic polymkeric substance, the refractive index of described protective seam is less than the refractive index of described nano-silver thread conductive layer, the refractive index of described nano-silver thread conductive layer is less than the refractive index of polaroid.

9. a wearable device, is characterized in that: comprise driving and control module and the demonstration of the curved surface touch-control as described in claim 1-8 any one module, drive control module to be electrically connected this curved surface touch-control and show module.