CN105224115B - Curved surface touch panel and wearable device - Google Patents
Curved surface touch panel and wearable device Download PDFInfo
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- CN105224115B CN105224115B CN201410260250.9A CN201410260250A CN105224115B CN 105224115 B CN105224115 B CN 105224115B CN 201410260250 A CN201410260250 A CN 201410260250A CN 105224115 B CN105224115 B CN 105224115B
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Abstract
The present invention relates to one kind being related to technical field of touch control, more particularly to a kind of curved surface touch panel and the wearable device made of the curved surface touch panel.Curved surface touch panel, including a cover board, it is touch surface to have first surface and second surface, the first surface；One flexible parent metal and the nano-silver thread conductive layer being set on the flexible parent metal, the flexible parent metal is between the second surface and the nano-silver thread conductive layer；After the flexible parent metal deformation, the curvature of the flexible parent metal and the nano-silver thread conductive layer is more than 0, and the nano-silver thread conductive layer is compressed.Wearable device, including drive control module and curved surface touch panel as described above, drive control module are electrically connected the curved surface touch panel.
Description
【Technical field】
The present invention relates to technical field of touch control, more particularly to a kind of curved surface touch panel and use the curved surface touch panel system
The wearable device of work.
【Background technology】
In traditional smart phone, such as the capacitance type touch-control panel of iphone, the material of touch control electrode is usually to aoxidize
Indium tin (referred to as ITO).The light transmittance of ITO is very high, and electric conductivity is preferable, and extensive use is current touch panel and display panel
Conductive electrode material.But ITO also has its apparent defect, and the conductive electrode that ITO is formed is very crisp, lacks flexibility, is not suitable for
In on the curved surfaces such as such as iwatch or flexible touch screen.
In addition, in manufacturing method, original ITO need vacuum chamber, higher depositing temperature and/or high annealing temperature with
High conductance is obtained, causes the integral manufacturing cost of ITO very expensive.Moreover, ito thin film is very fragile, though encounter compared with
The bending of small physical stress is also more easily damaged very much, therefore in the tide in the emerging product market that wearable device gradually emerges
Under, ITO materials can not cannot deal with the demand in market as conductive material and gradually be eliminated.
Just because of this, industrial circle is being dedicated to developing the alternative materials of ITO, wherein nano-silver thread (silver nano always
Wires, abbreviation SNW) it is used as a kind of brand-new material to start to substitute ITO as preferred conductive material.SNW is that many ITO are substituted
The presently the most ripe one kind of material.The electric conductivity that nano-silver thread has silver excellent, simultaneously because the size effect of its Nano grade
It answers so that it can be used as preferably substituting materials of the ITO as touch control electrode with excellent translucency and flexible resistance
Material realizes the curved surface touch-control based on nano-silver thread.
Although nano-silver thread itself has good flexible resistance, curved surface is used in the conductive film that nano-silver thread is formed
When touch-control, it is also necessary to deal carefully with influence of the quadric stress for nano-silver thread.In nano-silver thread conductive film, film substrate
Usually micron level, such as 125 μm of PET, and it is usually Nano grade to form nano-silver thread thickness on base material, such as
100nm, when being bent to nano-silver thread conductive film, even if bending degree very little, stress that when bending generates for PET with receive
The overlap joint between attachment and nano-silver thread between rice silver wire can all generate large effect.Especially when this stress be to
When outer tensile stress, between PET and nano-silver thread attachment and nano-silver thread between overlap joint influence it is more tight
Weight.
Simultaneously as the reflecting ratio ITO high of nano-silver thread, when using nano-silver thread as touch control electrode, touch panel
It visually will appear white haze phenomenon, if using the laminating type of tensile stress formula, nano-silver thread is from human eye closer to white haze phenomenon
It becomes apparent from, to influence the appearance and light transmittance of touch panel.
【Invention content】
To overcome existing nano-silver thread to substitute many problems of the ITO as new conductive material, the present invention provides one kind
It can solve the curved surface touch panel and wearable electronic of the problem.
The scheme that the present invention solves technical problem is to provide a kind of curved surface touch panel, including a cover board, has the first table
Face and second surface, the first surface are touch surface；One flexible parent metal and the nano-silver thread being set on the flexible parent metal
Conductive layer, the flexible parent metal is between the second surface and the nano-silver thread conductive layer；The flexible parent metal deformation
Afterwards, the curvature of the flexible parent metal and the nano-silver thread conductive layer is more than 0, and the nano-silver thread conductive layer is compressed.
Preferably, the thickness of the flexible parent metal and the thickness ratio of the nano-silver thread conductive layer are more than 100, the flexibility
After base material deformation, the nano-silver thread conductive lamination shrinkage is 0-25%.
Preferably, after the flexible parent metal deformation, the conductivity of the nano-silver thread conductive layer improves 0-40%.
Preferably, further comprise a high refractive index adhesive layer, high refractive index adhesive layer is located at the cover board and described soft
Property base material between, the refractive index of the high refractive index adhesive layer is 1.52-1.79.
Preferably, coating rate of the coated area of the high refractive index adhesive layer on the nano-silver thread conductive layer surface
Not less than 50%.
Preferably, the light transmittance of nano-silver thread conductive layer is at least 90%, and mist degree is no more than 5%, and thickness is 50nm-
200nm, refractive index are 1.35-1.8.
Preferably, the nano-silver thread conductive layer includes a matrix and a plurality of nano-silver thread that is distributed in the matrix,
The a plurality of nano-silver thread, which mutually overlaps, forms conductive network, and for the line length of nano-silver thread between 20-50 μm, line footpath is less than 50nm,
Length-width ratio is more than 400.
Preferably, further comprise the adhesion promoting layer being set between the flexible parent metal and the nano-silver thread conductive layer,
The coefficient of expansion of the adhesion promoting layer is less than the coefficient of expansion of the flexible parent metal.
Preferably, further comprise the protective layer for being set to the transparent insulation of the nano-silver thread conductive layer surface, including
Transparent sticky material and transparent dielectric material, sticky material are photonasty sticker or thermosetting property sticker, dielectric material
Any one of material selected from polyimide, silica, nitrogen Si oxide, epoxy resin, acryl polymer or combinations thereof, institute
The refractive index for stating protective layer is less than the refractive index of the nano-silver thread conductive layer, and the refractive index of the nano-silver thread conductive layer is less than
The refractive index of the flexible parent metal.
A kind of wearable device, including drive control module and curved surface touch panel as described above, drive control module
It is electrically connected the curved surface touch panel.
Compared with prior art, the touch control electrode material of curved surface touch panel of the invention and wearable device is by traditional
ITO materials replace with nanometer silver wire material so that more preferably, cost is lower for the conductive effect of curved surface touch panel, apparent visual effect
Fruit is more preferable, caters to and gradually dominate the developing direction of touch-control product, the forward-looking advantageous effect with leading market.
Meanwhile curved surface touch panel of the invention is mainly used on wearable intelligent electronic device, in use environment
Upper entire layer structure is easier to cause small deformation.Nano-silver thread conductive layer is arranged the present invention leads in carrying nano-silver thread
Under the flexible parent metal of electric layer, the nano-silver thread conductive layer that tensile stress should occur is become producing by flexible parent metal deformation
Raw compression.In this way, by the conversion of tensile stress to compression, although great effect can't be played on the conductive layer of ITO,
Be for nano-silver thread conductive layer, inside be to there are the nano-silver threads of many filiforms to be dispersed in matrix, electric conductivity is most
It is that the mutual of internal multiple nano-silver threads overlaps come what is realized to embody eventually, and excellent degree that overlapped is in addition to the number with nano-silver thread
Amount has outside the Pass, also closely related with internal tightness degree.It is interior when nano-silver thread conductive layer bears compression due to deformation
Overlap joint is squeezed between a plurality of nano-silver thread in portion mutually, bond strength and overlap joint density is made to increase, and conductivity is caused to drop to obtain
It greatly improves.Under the action of compression, it can also make nano-silver thread conductive layer with flexible parent metal mutually closer to increase
Adhesive force between the two by force, is greatly reduced adhesive performance requirement between nano-silver thread conductive layer and flexible parent metal.
From the perspective of solving nano-silver thread mist degree, the present invention is by nano-silver thread conductive layer by being located above flexible parent metal
After moving to below flexible parent metal, by the covering of flexible parent metal, the light for lowering nano-silver thread on nano-silver thread conductive layer is unrestrained
It penetrates, to reduce the mist degree of nano-silver thread conductive layer.In addition, original adhesion-layer materials are improved by the present invention, select high
Refractive index adhesive layer-OCA glue is bonded the cover board and flexible parent metal on upper layer, and high refractive index adhesive layer is located at nano-silver thread conduction
On layer, the reflection of nano-silver thread conductive layer can be effectively reduced, solves the problems, such as that nano-silver thread mist degree is apparent.Meanwhile with height
Refractive index adhesive layer increases lamination without additional, and the thickness for being also beneficial to reduce curved surface touch panel obtains lightening effect.
From the perspective of product is lightening, sixth embodiment of the invention is using protective layer, the guarantor made of mixed materials
Sheath has both adherence and optical treatment characteristic, and individual high refractive index adhesive layer, and processing are no longer needed on laminated construction
The optical treatment layer of haze issues, so as to reduce the integral thickness of screen body, realizing can also solve while product is lightening
The haze issues of nano-silver thread conductive layer.
In more excellent 8th embodiment of the present invention, polaroid is directly substituted to flexible parent metal to carry nano-silver thread conduction
Layer, and nano-silver thread conductive layer is located at the lower section of polaroid, and the tensile stress that polaroid deformation generates is become compression.Do not receive
The one side of the polaroid of rice silver wire conductive layer reduces the mist degree of nano-silver thread conductive layer close to touch surface, while reducing product
Integral thickness meets lightening demand.
【Description of the drawings】
Fig. 1 is the cross section structure schematic diagram of nano-silver thread film of the present invention.
Fig. 2 is the floor map of nano-silver thread film of the present invention.
Fig. 3 is the configuration schematic diagram of first embodiment of the invention curved surface touch panel.
When Fig. 4 is that the conductive layer of first embodiment of the invention curved surface touch panel is located on base material, after base material deformation, lead
The deformed state schematic diagram of electric layer.
Fig. 5 is the configuration schematic diagram of second embodiment of the invention curved surface touch panel.
When Fig. 6 is that the conductive layer of second embodiment of the invention curved surface touch panel is located under base material, after base material deformation, lead
The deformed state schematic diagram of electric layer.
Fig. 7 is the production method flow chart of third embodiment of the invention curved surface touch panel.
Fig. 8 is the detonation configuration figure of fourth embodiment of the invention curved surface touch panel, is increased between conductive layer and base material
One adhesion promoting layer.
Fig. 9 is the detonation configuration figure of fifth embodiment of the invention curved surface touch panel, is increased between base material and conductive layer
One adhesion promoting layer increases by an optical match layer on or below conductive layer.
Figure 10 is the detonation configuration figure of sixth embodiment of the invention curved surface touch panel, is increased between base material and conductive layer
One adhesion promoting layer increases by a protective layer under conductive layer.
Figure 11 is the detonation configuration figure of seventh embodiment of the invention curved surface touch panel.
Figure 12 is the detonation configuration figure of eighth embodiment of the invention curved surface touch panel.
Figure 13 is the schematic diagram of the wearable device made of curved surface touch panel of the present invention.
【Specific implementation mode】
In order to make the purpose of the present invention, technical solution and advantage be more clearly understood, below in conjunction with attached drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
It please refers to Fig.1 and Fig. 2, is the cutting structural schematic diagram of nano-silver thread conductive film 800, nano-silver thread conductive layer
805 are typically fabricated on substrate 807, including more nano-silver threads 801 being embedded in matrix 803, nano-silver thread 801 are arranged in
Mutually overlap joint forms conductive network in matrix 803.The line length of nano-silver thread 801 (silver nano wires, abbreviation SNW) is
The line footpath (or line width) of 10-300 μm, preferably 20-100 μm, preferably the length of 20-50 μm, nano-silver thread 801 is less than 500nm
Or be less than 200nm, 100nm, preferably less than 50nm, and its length-width ratio (the ratio between line length and line footpath) and be more than 10, preferably greater than 50,
More preferably greater than 100, it is more than 400.
Substrate 807 is generally transparent insulation material, can be glass, polyimides (Polyimide, PI), poly- methyl-prop
E pioic acid methyl ester (PMMA), makrolon (PC), polyethylene terephthalate (PET) etc., but be not limited thereto.
Silver is silvery white non-ferrous metal under general state, and is opaque material, and electric conductivity is splendid.And when nano silver is made in silver
When line 801, nano-silver thread 801 has good light transmittance and splendid electric conductivity, can be good at applying to touching for touch screen
Control electrode.
Matrix 803 refers to that the solution containing nano-silver thread 801 is arranged by the methods of coating on substrate 807, by adding
After heat drying makes volatile substance volatilization, 801 substance of non-nano silver wire on substrate 807 is stayed in.Nano-silver thread 801 is spread
Or be embedded, conductive network is formed, part nano-silver thread 801 is prominent from 803 material of matrix.Nano-silver thread 801 relies on base
Matter 803 forms nano-silver thread conductive layer 805, and matrix 803 can protect nano-silver thread 801 from external environments such as corrosion, wears
Influence.
The thickness of nano-silver thread conductive layer 805 is about 5 μm of 10nm-, preferably 1 μm of 20nm-, and more excellent is 50nm-
200nm.In some embodiments, the refractive index of nano-silver thread conductive layer 805 is 1.3-2.5, and more excellent is 1.35-1.8.
Solution containing nano-silver thread 801 refers to that the suspension that nano-silver thread 801 is dispersed in specific solvent and is formed is molten
Liquid, the solvent can be or mixtures thereof water, aqueous solution, solion, saline solns, supercritical fluid, oil etc..In the solvent
Other additives can also be contained, such as dispersant, surfactant, crosslinking agent, stabilizer, wetting agent or thickener, but not with this
It is limited.
In addition, the optical characteristics of nano-silver thread conductive layer 805 can be adjusted by selecting 803 material of matrix appropriate, it is special
It is not to solve haze issues.For example, matrix 803 can be adjusted to have desired refractive index, component and certain thickness
Degree, can efficiently reduce reflection loss, glare effects, mist degree.
Mist degree refer to due to cloud caused by 801 surface light diffusion of nano-silver thread in nano-silver thread conductive layer 805 or
Muddy appearance.The haze issues of screen can cause in the case where outdoor scene light irradiates, and screen reflection light is strong, seriously
When user can be made not see screen.
The light transmittance or clarity of nano-silver thread conductive layer 805 can limiting by following parameter quantitative：Light transmittance and mist degree.
Light transmittance refers to the percentage of the incident light transmitted by medium, and the light transmittance of nano-silver thread conductive layer 805 is at least 90%, very
95%-97% can be extremely up to.Mist degree is the index of light diffusion, and mist degree refers to the process of being separated in incident light and in transmission
The number percent of the light of middle scattering.Mist degree does not exceed 5% in an embodiment of the present invention, it might even be possible to reach and be no more than
3% -1.5%.
Referring to Fig. 3, the curved surface touch panel 10 of the first embodiment of the present invention includes cover board 101, nano-silver thread is conductive
Layer 103, flexible parent metal 109 and high refractive index adhesive layer 105.Its cover plate 101 is contacted with touching object, in flexible parent metal 109
Display unit 107 can be also arranged in lower section, and to form a kind of display module with touch function, wherein display unit 107 includes
Polaroid 1071 and optical module 1073, polaroid 1071 be located at the upper surface of optical module 1073 (herein and aftermentioned "upper" or
"lower" is relative position, not absolute definition, while while can be understood as overturning above also becomes following).Cover board upper surface
1011 be touching object contact surface, and cover board lower surface 1013 can be used as attachment surface bonding flexible parent metal 109, nano-silver thread conductive layer
103 direct formings are on flexible parent metal upper surface 1091.High refractive index adhesive layer 105 is used to be bonded the polarisation of display unit 107
Piece 1071 and flexible parent metal 109, high refractive index adhesive layer 105 are pasted onto on flexible parent metal lower surface 1093, flexible parent metal following table
1093 face display unit 107 of face.High refractive index adhesive layer 105 can select OCA (Optical transparent adhesive, Optical Clear
) or LOCA (Liquid optical clear adhesive, Liquid Optical Clear Adhesive) Adhesive.Can not doubt ground, as
A kind of deformation, nano-silver thread conductive layer 103 direct forming or can also be bonded on cover board lower surface 1013.
So-called curved surface touch panel 10 refers to the flexible parent metal of cover board 101 and inside after in wearable device
109 and nano-silver thread conductive layer 103 be on-plane surface, such as apply when on smartwatch, after wrist-watch is worn on hand, in
Bending can be all presented in the table ring and display in portion to a certain extent, and this requires the curved surface touch-controls as Human-machine Control interface
The bending of certain curvature is also presented in panel 10.The size of specific curvature can according to the environment difference that wearable device uses without
Together, but with the tablet that uses now, unlike the display screens such as mobile phone, curvature has to be larger than 0.Include the curvature of cover board 101,
The curvature of flexible parent metal 109, the curvature of 107 internal layered structure of curvature and display unit of nano-silver thread conductive layer 103.
In the present embodiment, nano-silver thread conductive layer 103 can be Fig. 1, when nano-silver thread conductive layer 805 shown in Fig. 2,
In order to realize the detection to multi-point touch, the side such as laser or etching can be passed through on the nano-silver thread conductive layer 103 in the present embodiment
Method forms a touch control electrode pattern (not shown).Flexible parent metal 109 can be Fig. 1,807 material of substrate shown in Fig. 2.Nano silver
Line conductive layer 103 is molded on flexible parent metal 109.Flexible parent metal 109 refers to industrially with some strength and with certain
Flexible substrate.Including but not limited to PI (polyimides), PC (makrolon), polyether sulfone (PES), poly-methyl methacrylate
Ester (PMMA), acryl, acrylic nitrile-butadiene-styrene (ABS), polyamide (PA), polybenzimidazoles polybutene (PB),
Polybutylene terephthalate (PBT) (PBT), polyester (PE), polyether-ether-ketone (PEEK), polyetherimide (PEI), polyetherimide,
Polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS), polytetrafluoroethylene (PTFE) (PTFE), polyurethane
(PU), polyvinyl chloride (PVC) etc..
Flexible parent metal 109 is used in curved surface touch-control due to brush, be coated with and embedded fine nano-silver thread 801
Structure on, flexible parent metal 109 can bear larger, more Bending Deformation, and it is advantageous to be PET material flexible as flexible
Base material 109.
In addition, in order to increase by 109 viscosity of flexible parent metal, in flexible parent metal upper surface 1091 or flexible parent metal lower surface 1093
An adhesion coating (not shown) is all added, so that flexible parent metal 109 is securely pasted on cover board lower surface 1013, while will preferably be received
Rice silver wire conductive layer 103 is pasted and fixed on flexible parent metal lower surface 1093.It is necessary to explanations, due to the flexible parent metal
109 are made of flexible material, therefore in movement or handling process, and flexible material is unavoidably deformed upon or is bent, because
This is relatively reliable using embedded or embedment nano-silver thread conductive layer 103.
Other than increasing by one layer of adhesion coating and can generate effect as above, the flexible parent metal 109 of PET material can also be carried out
Activity processing, such as increase its viscosity or increase its softness, it is therefore intended that when nano-silver thread conductive layer 103 is attached to flexible base
After on material 109, enhance the adhesive force between flexible parent metal 109 and nano-silver thread conductive layer 103.It is flexible on plane touch-control structure
It is not clearly, but on the curved surface touch panel 10 of the present invention, due to exhausted that the characteristic of base material 109, which handles presented effect,
It is most of to be used for wearable device, it may appear that frequently wearing and the number of bends to curved surface touch panel 10 and intensity all phases
It is frequently many to plane touch-control structure, so it is easy to appear viscous between nano-silver thread conductive layer 103 and flexible parent metal 109
Bad problem, conductive layer is caused to fall off, influences touch accuracy.It is handled when increase adhesion coating or to 109 activity of flexible parent metal,
After enhancing the adhesive force between nano-silver thread conductive layer 103 and flexible parent metal 109, the effect on curved surface touch panel 10 will be non-
Chang Xianzhu makes curved surface touch panel 10 apply and no longer occurs the easy offset of nano-silver thread conductive layer 103 in wearable device
Or the problem of falling off, make it possible that wearable device more rapidly comes into electronic consumer markets.
Referring to Fig. 4, under normal circumstances, 103 thickness of nano-silver thread conductive layer is 50nm -200nm, and PET material is soft
Property base material 109 thickness be 20 μm-150 μm, the thickness of flexible parent metal 109 is the 100-of 103 thickness of nano-silver thread conductive layer
As many as 3000 times, when being made as wearable device using curved surface touch panel 10, flexible parent metal 109 can be due to external force or wearing
It needs and miniature deformation occurs, although this deformation is very small for flexible parent metal 109, for shaping nano silver thereon
For line conductive layer 103, deformation quantity will amplify as many as 100-3000 times, since nano-silver thread conductive layer 103 is located at flexible base
On material upper surface 1091, after miniature deformation occurs for flexible parent metal 109, the nanometer being located on flexible parent metal upper surface 1091 can be made
Silver wire conductive layer 103 bears larger tensile stress, and nano-silver thread conductive layer 103 is made to bear larger stretching in the direction of the width
Deformation quantity.As shown in figure 4, the sectional width of nano-silver thread conductive layer 103 can be drawn as L1 sizes by the L dimension before deformation,
The tensile stress causes flexible parent metal 109 and the attachment of nano-silver thread conductive layer 103 no longer firm, on nano-silver thread conductive layer 103
Overlap distance becomes larger between a plurality of nano-silver thread 801 of deposition, and overlap joint effect is deteriorated, and finally makes nano-silver thread conductive layer 103
Conductivity drastically declines.In order to preferably solve the above problems, the present invention can further provide for more preferably curved surface as described below and touch
Control panel 20.
Referring to Fig. 5, the curved surface touch panel 20 of second embodiment of the invention, including cover board 201, high refractive index adhesive layer
205, flexible parent metal 209 and nano-silver thread conductive layer 203.High refractive index adhesive layer 205, flexible parent metal 209 and nano-silver thread are led
The material of electric layer 203 is identical as the curved surface touch panel 10 of first embodiment, main difference is that：Cover board 201 is located at
The top, cover board upper surface 2011 are used as touch surface, and cover board lower surface 2013 passes through 205 sticking flexible base of high refractive index adhesive layer
Material upper surface 2091, and nano-silver thread conductive layer 203 is located on flexible parent metal lower surface 2093, and flexible parent metal lower surface 2093
Display unit 207 downwards.Primary deformable is that the position of high refractive index adhesive layer 205 moves to cover board 201 and flexible base
Between material 209, the position of nano-silver thread conductive layer 203 moves to flexible parent metal lower surface 2093 by flexible parent metal upper surface 2091
On.
Referring to Fig. 6, curved surface touch panel of the curved surface touch panel 20 of second embodiment relative to first embodiment
2010, by the out of position of flexible parent metal 209 and nano-silver thread conductive layer 203, since flexible parent metal 209 is that nano-silver thread is led
As many as 100-3000 times of 203 thickness of electric layer, when 209 use of flexible parent metal is on wearable electronic product, flexible parent metal
209 are easy to that miniature deformation occurs.After the width of flexible parent metal 209 generates miniature deformation, due to nano-silver thread conductive layer 203
In on flexible parent metal lower surface 2093 so that the tensile deformation amount in 209 width direction of flexible parent metal is amplified 100-3000 times
Later, it conducts to the nano-silver thread conductive layer 203 of lower section, and it is larger so that nano-silver thread conductive layer 203 is generated in the direction of the width
The compression of amplitude causes nano-silver thread conductive layer 203 to be compressed, and internal a plurality of silky nano silver wire 801 overlap joint more steps up
Close, electric conductivity is more preferably.As shown in fig. 6, the sectional width of nano-silver thread conductive layer 203 can be compressed by the L dimension before deformation
For L2 sizes.
It can be obtained according to empirical theory ideally, after 109 deformation of flexible parent metal in first embodiment, nano silver
The extensibility of line conductive layer 103 is approximately more than 0, is less than 15%.After 209 deformation of flexible parent metal in second embodiment, nano-silver thread
The compression ratio of conductive layer 203 is about more than 0, is less than 20%, extensibility and compression ratio can also according to flexible parent metal 109,209 with receive
The thickness ratio of rice silver wire conductive layer 103,203 and the actual size of flexible parent metal 109,209 are changed, and nano-silver thread is conductive
The extensibility of layer 103 also will increase to be more than 0, be less than 30%.The compression ratio of nano-silver thread conductive layer 203 also will increase to be more than
0, it is less than 25%.In this way, when nano-silver thread conductive layer 203 is moved to flexible parent metal 209 by the top of flexible parent metal 209
Behind lower section, the deformation quantity of nano-silver thread conductive layer 203 can at least change 0% -35%.
After nano-silver thread conductive layer 203 becomes compressive deformation from tensile deformation, internal a plurality of silky nano silver wire 801
Overlap even closer, electric conductivity can be significantly improved, and can be obtained according to gedanken experiment data, in first embodiment, nano silver
When line conductive layer 103 is located on flexible parent metal 109, the miniature deformation of flexible parent metal 109 can make nano-silver thread conductive layer 203
Conductivity declines 5% -20%, and concrete numerical value also has bigger to change according to the increase of the amplitude of deformation, or even up to 50%.The
In two embodiments, when nano-silver thread conductive layer 203 is located under flexible parent metal 209, the miniature deformation of flexible parent metal 209 can make to receive
Compression is born between rice silver wire conductive layer 203, the conductivity of nano-silver thread conductive layer 203 will improve 0% -30%, specific number
Value also has large variation, or even up to 30% -40% according to the amplitude of deformation.
At the same time, the nano-silver thread conductive layer 203 after deformation can also make nano silver due to compression existing for inside
Line conductive layer 203 is with flexible parent metal 209 mutually closer to the adhesive force of enhancing between the two.
Referring to Fig. 7, third embodiment of the invention is the manufacturing method of the curved surface touch panel 20 in above-described embodiment, it should
Method includes the following steps：
S11：The flexible parent metal 209 of one transparent insulation is provided.The flexible parent metal 209 is using flexible flexible material system
At referring to industrially with some strength and with certain flexible base material.
S12：Nano-silver thread conductive layer 203 is shaped on a wherein surface for the flexible parent metal 209.Best mode is,
Nano-silver thread conductive layer 203 is formed on flexible parent metal lower surface 2093.After 209 deformation of flexible parent metal, flexible parent metal 209 with
Nano-silver thread conductive layer 203 is bent so that the curvature of the two is more than 0, when nano-silver thread conductive layer 203 is arranged in flexible parent metal
When lower surface 2093, since the thickness ratio of flexible parent metal 209 and nano-silver thread conductive layer 203 is more than 100-3000 times, and make to receive
Rice silver wire conductive layer 203 is compressed, and compression ratio is at least 0-25%.
S13：The cover board 201 of one transparent insulation is provided.Covering is located at flexible parent metal 209, nano-silver thread conductive layer under it
203 and display unit 207.The cover board 201 uses rigid transparent insulating materials, wherein rigid transparent insulating materials can be used
Strengthened glass and flexible transparent panel.The upper surface of cover board 201 is touch surface.
S14：The flexible parent metal 209 is pasted together with the cover board 201 by high refractive index adhesive layer 205.
High refractive index adhesive layer 205 is coated using OCA glue, in coating, can be coated in 203 surface of nano-silver thread conductive layer, be applied
It is coating comprehensively when covering, is different from the existing mode for needing frame to coat.The coated area of OCA glue is nano-silver thread conductive layer
100% or 80%-90% of 203 surface areas is minimum to be not less than 50%.The reason of coating surface area is chosen is, when receiving
When rice silver wire conductive layer 203 is located on flexible parent metal 209, the material of nano-silver thread 801 itself has haze issues and influences vision
Effect.So high refractive index adhesive layer 205 is applied as to the optical adhesive layer of high refractive index here, the high refractive index adhesive layer
205 refractive index is 1.52-1.79 so that coated in mist degree can be reduced to after on nano-silver thread conductive layer 203 5% with
Under, it can most preferably be reduced to 3%, 2%, 1.5%.
Since OCA glue is when being generally often used as cementation, refractive index is 1.5 or so, and being such as promoted to has
The OCA glue needs of higher refractive index do specially treated in technique, and higher with induced refractive index, technology difficulty is bigger, cost of manufacture
It is higher.
The refractive index of high refractive index adhesive layer 205 is 1.52-1.79, preferably 1.7.It, first can be according to OCA when selection
The manufacture craft of glue considers that 1.52 be the refractive index of common OCA glue, minimum in cost of manufacture.If further promoting its folding
Rate is penetrated, difficulty can be gradually increased, and when improving to 1.79, continuation up improves its difficulty will be very big, so comprehensive make
Difficulty and input cost, 1.79 be the big range of the limit.
When preferably 1.7, in addition to manufacture craft difficulty and cost mutually outside the Pass, can also be according to nano-silver thread conductive layer 203
The density of upper nano-silver thread 801 is related, when 801 density of nano-silver thread is big, the refractive index optimum value of high refractive index adhesive layer 205
It is bigger, it is minimum to be not less than 1.52.
In addition, can also be related to the material of flexible parent metal 209, when the flexible parent metal 209 of glass material has high reflection special
When property, the refractive index optimum value of high refractive index adhesive layer 205 is bigger, minimum to be not less than 1.52.
Referring to Fig. 8, the curved surface touch panel 40 of fourth embodiment of the invention, nano-silver thread conductive layer 403 are attached to soft
Property base material 409 on, and flexible parent metal 409 is flexible flexible base board, when flexible parent metal 409 is due to heated or temperature change or work
Allow nano-silver thread conductive layer 403 good comprehensively can not be covered in flexible parent metal lower surface to generate deformation when curved surface touch-control
On 4093, one layer of adhesion promoting layer 402, adhesion promoting layer 402 can be especially coated between nano-silver thread conductive layer 403 and flexible parent metal 409
Coated area be 403 surface area of nano-silver thread conductive layer 100% or 80%-90%, it is minimum to be not less than 50%, herein
Coated area is on the basis of 403 surface area of nano-silver thread conductive layer, i.e., when nano-silver thread conductive layer 403 is more than, is less than or waits
When 409 surface area of flexible parent metal, coated area is 100% or 80%- of 403 surface area of nano-silver thread conductive layer
90%, it is minimum to be not less than 50%.
The coefficient of expansion of the adhesion promoting layer 402 is less than the coefficient of expansion of flexible flexible parent metal 409.Since film forming manufactures work
Often along with the variation of temperature in skill, and possess the larger coefficient of expansion when flexible parent metal 409 is flexible base plate, heating,
Significant volume change is often had during cooling, to make flexible flexible parent metal 409 generate sticking up for the second bending direction
Bent or deformation, the problem of in turn resulting in exposure or poor focusing, the presence of the adhesion promoting layer 402 can be good in solution
State problem.
The material of the adhesion promoting layer 402 can be selected from high molecular polymer, insulating materials, resin, transparent optical cement, oxidation
Object, class photoresist etc., including but not limited to：Polyacetylene, polyaniline, polyarylene, polythiophene, graphene, pentacene, polyphenylene ether
(PPE), polyparaphenylene's acetylene (PPV), poly- 3,4- ethylidene dioxy pheno (PEDOT), polystyrolsulfon acid (PSS), poly- 3- hexyls
Thiophene (P3HT), poly- 3- octyl thiophenes (P3OT), polyether sulphone, poly- C-61- butyric acid-methyl esters (PCBM), poly- [2- methoxyl groups -5-
(2- ethyls-hexyloxy)-Isosorbide-5-Nitrae-phenylene ethylene] (MEH-PPV), silicon nitride, substances or their the arbitrary combination such as silica.
The adhesion promoting layer 402 is fluidly coated in 409 top of flexible parent metal, and the fluid can be：It is water, water-soluble
Liquid, solion, supercritical fluid, plasma, oil or their arbitrary combination.Including but not limited to：Water, acetone, second
Acetoacetic ester, ethyl alcohol, butyl acetate, amylalcohol, phenolic resin, alkyd resin, sodium hydroxide, isopropyl ether (i- propyl ether), isopropanol, first
Base ethyl ketone (either MEK), methyl formate, methyl n-butyric acie ester, n-butanol, octane, petroleum ether, propyl alcohol or theirs is arbitrary
Combination.
The fluid further may also include surfactant, dispersant, stabilizer or adhesive.
The method that 402 fluid of the adhesion promoting layer is coated in the top of flexible parent metal 409 includes：Sputter, electrostatic spraying, reverse roll
Coating, groove type coating, slit type coating, coining, thermal transfer, Meyer stick (meyer rod) coating, spin coating, silk-screen printing, photograph
Phase intaglio printing, offset printing, hectographic printing, ink jet printing, intaglio printing or their arbitrary combination.
In specific implementation coating, after arranging flexible parent metal 409 first, adhesion promoting layer 402 is coated in lower section, adjusts temperature
Degree dries adhesion promoting layer 402,801 solution of nano-silver thread is coated to 402 lower surface of adhesion promoting layer after 402 semi-solid preparation of adhesion promoting layer, is put
140 DEG C are adjusted the temperature to after setting 60-80s, until 801 nano-silver thread conductive layer 403 of nano-silver thread is dried, is used in combination roller to the above institute
It obtains film to be rolled, then cool down.
In another embodiment, the material of adhesion promoting layer 402 itself is the form of solid film.Adhesion promoting layer 402 then may be used
409 top of flexible parent metal is directly covered in the form of by solid film heating rolling, at this moment the material packet of adhesion promoting layer 402
It includes but is not limited to：Polyvinyl butyral (PVB), polyvinyl alcohol (PVA), makrolon (PC), polyethylene terephthalate
(PET), polymethyl methacrylate (PMMA), glassine paper etc..
It overlaps simply by virtue of intermolecular force between nano-silver thread 801, is easy to slide in the case where deflecting effect
It moves, provides adhesion promoting layer 402 so that adhesive force is good between nano-silver thread conductive layer 403 and flexible parent metal 409.Nano-silver thread
801 is more firm with the attachment of flexible parent metal 409, and the overlap joint between nano-silver thread 801 is then more good, to provide good conduction
Rate.In general, film forming manufacturing process is when carrying out, often can with variation with temperature, and flexible parent metal 409 have it is larger swollen
Swollen coefficient often has a significant volume change in the process of heating cooling, and when the manufacturing process that forms a film, Chang Yinwei is adhered to firmly
The expansion or shrinkage of flexible flexible parent metal 409 on matter base material and make flexible flexible parent metal 409 generate the second bending direction
Warpage or deformation, in turn result in exposure or it is burnt poly- bad the problems such as, solved because of flexible flexible base by adhesion promoting layer 402
A series of problems caused by the expansion or shrinkage of material 409.
Referring to Fig. 9, the curved surface touch panel 50 of fifth embodiment of the invention includes flexible parent metal 509, nano-silver thread is led
Electric layer 503 and optical match layer 506, the optical match layer 506 are the optical film of one layer of low-refraction, the optical match layer
506 are located above or below flexible parent metal 509 or above or below nano-silver thread conductive layer 403.
The water droplet angle of the flexible parent metal 509 be 0-30 degree, preferably less than 10 degree.
The low-refraction is that refractive index is less than 1.6, preferably 1.1~1.6.Optical match layer 506 can be organic
Object or inorganic matter or organic and inorganic mixed coating.Such as Si oxide, chlorofluoride, magnesium fluoride, silica, lithium fluoride,
Sodium fluoride, magnesia, silicate, polyurethane, PMMA, PVA, PVP, organosilicon, fluoropolymer, acrylic resin, acrylic acid tree
Fat+silicon stone nano particle.Preferred refractive index is 1.1,1.25,1.32,1.38,1.46,1.50,1.52.
The optical film thickness of the optical match layer 506 is less than or equal to 1/4 wavelength odd-multiple.
The generation type of the optical match layer 506 can be physical deposition, chemical deposition, vacuum coating, printing, spray
It applies, flexo, nano impression, silk-screen printing, blade coating, rotary coating, rodlike coating, roller coating, bar coating, dipping applies
Any mode such as cloth.
After optical match layer 506 is set, the high refractive index adhesive layer 505 of OCA glue, PET flexible parent metals below
509 and the optical match layer 506 of 503 lower section of the top of flexible parent metal 509 or nano-silver thread conductive layer constitute a refractive index and meet
The mist degree of the nano-silver thread conductive layer 503 is reduced to 5% or so, preferably less than 3% by layer, and 2%, 1.5%.
In another embodiment, optical layer matching layer 506 and 503 position of nano-silver thread conductive layer can be interchanged.When
When optical match layer 506 is below nano-silver thread conductive layer 503, protective layer is can simultaneously serve as, prevents 801 oxygen of nano-silver thread
Change, corrosion etc. is directly exposed to outer a series of problems.
The present embodiment further includes adhesion promoting layer 502, and optical match layer 506 can be bonded in flexible parent metal 509 and high refractive index
Layer 505 between, between flexible parent metal 509 and adhesion promoting layer 502, between adhesion promoting layer 502 and nano-silver thread conductive layer 503, nano silver
It arbitrarily arranges between line conductive layer 503 and display unit 507, adhesion promoting layer 502 can also be optical match layer 506 in addition, have
The characteristic and effect of optical match layer 506.
The adjusting to 50 mist degree of curved surface touch panel is realized by optical match layer 506, and for optical match layer 506
Status requirement it is flexible and changeable, flexibly and effectively realize the reduction to 801 mist degree of nano-silver thread.
The curved surface touch panel 60 of sixth embodiment of the invention includes flexible parent metal 609, nano-silver thread conductive layer 603 and guarantor
Sheath 608, protective layer 608 is covered in 603 lower surface of nano-silver thread conductive layer, and the protective layer 608 in the present embodiment is adhesion
Property protective layer 608, need that layer of transparent optical cement is arranged below general protective layer, the protective layer 608 is adherence protection
Layer 608, it is not necessary that transparent optical cement is arranged, is more advantageous to the lightening of curved surface touch panel 60.The material packet of the protective layer 608
Include transparent sticky material and transparent dielectric material.The protective layer 608 is prevented for protecting nano-silver thread conductive layer 603
Only 603 surface of nano-silver thread conductive layer electric conductivity reduction by oxidation.Therefore, in the present embodiment, high refractive index adhesive layer
105,205 no longer exist, but are replaced with adherence, and the protective layer of 603 effect of protection nano-silver thread conductive layer
608.The index requirements of the protective layer 608 are identical as the index requirements of high refractive index adhesive layer 205 in second embodiment.It applies
It overlays on also identical as 205 processing mode of high refractive index adhesive layer in second embodiment when 608 surface of conductive layer.
The sticky material of the protective layer 608 is photonasty sticker or thermosetting property sticker.The photonasty sticker
Can be photoresist suitable for lithography process, for example, the photoresist of the polyacrylate system of absorbable ultraviolet wavelength or
The photoresist of other light solidity.The material of the thermosetting property sticker includes then epoxy resin or other are thermally cross-linkable and in sense
The compatible material of photosensitiveness sticker.
The dielectric material be selected from polyimide, silica, nitrogen Si oxide, epoxy resin, acryl polymer or
A combination thereof.
The dielectric material is to be selected from and nano-silver thread conductive layer 603 itself or the material more compatible with flexible parent metal 609
Material can promote the bond strength of protective layer 608 and flexible parent metal 609 or nano-silver thread conductive layer 603 to a certain extent.
Compared to the protective layer 608 of single material, the protective layer 608 being made of mixed materials can be by different refractivity material
The selection of matter adapts to the touch panel requirement of different appearance demands, specifically, by adjusting protective layer 608 refractive index and
Thickness makes its refractive index match with the refractive index positioned at 608 upper and lower structure of protective layer, curved surface touch panel 60 can be improved
The problem of light transmittance, improvement curved surface 60 bad order of touch panel.For example, nano-silver thread conductive layer 603 has refractive index n1, protect
Sheath 608 has refractive index nf, and flexible parent metal 609 has refractive index nT, and n1 is more than nf and is less than nT, is preferably approximately equal to nf and nT
Product open radical sign.
By protective layer 608 made of the mixed materials, fundamentally can be such as the optical match layer as described in embodiment five
506 optical treatment characteristic.On the whole, which has both adherence and optical treatment characteristic, makes curved surface touch panel
60 no longer need the high refractive index adhesive layer 205 in embodiment two, the optical match layer in embodiment five on laminated construction
506, the integral thickness of screen body is reduced, realizes that the mist degree that can also solve nano-silver thread conductive layer 603 while product is lightening is asked
Topic.
In this way, the laminated construction of the curved surface touch panel 60 of sixth embodiment from top to bottom includes cover board 601 successively, height folding
Penetrate the adhesive layer 605 of rate, flexible parent metal 609, adhesion promoting layer 602, nano-silver thread conductive layer 603 and protective layer 608.
Please refer to Fig.1 1, the curved surface touch panel 70 of the 7th embodiment of the utility model on laminated construction from top to bottom according to
It is secondary to include, cover board 701, high refractive index adhesive layer 705, flexible parent metal 709, the first conductive layer 703, the second conductive layer 704 and protect
Sheath 708.First conductive layer 703, the second conductive layer 704 are nano-silver thread conductive layer 805.It is appreciated that first leading herein
Electric layer 703, the second conductive layer 704 all can be use the techniques such as photoetching, etching, yellow light processing procedure, coining by Fig. 1, shown in Fig. 2
Nano-silver thread conductive layer 805 cuts into the conductive pattern of different directions, forms latticed conducting channel.For example, first is conductive
Layer 703 is the conductive layer formed after the conductive pattern that nano-silver thread conductive layer 805 is cut into first axis (X-direction)；Second
Conductive layer 704 is the conductive layer formed after the conductive pattern that nano-silver thread conductive layer 805 is cut into second axial (Y-direction).
A layer insulating is set between first conductive layer 703 and the second conductive layer 704.
The first conductive layer 703 below flexible parent metal 709 occurs with the second conductive layer 704 in flexible parent metal 709 micro-
After deformation, due to being respectively positioned on the lower section of flexible parent metal 709, the first conductive layer 703 is compressed with the second conductive layer 704.Compression
Afterwards, the rwo internal 801 overlapping rate higher of nano-silver thread, conductivity get a promotion simultaneously.
Please refer to Fig.1 2, the curved surface touch panel 90 of the 8th embodiment of the utility model in structure with shown in embodiment two
Curved surface touch-control display panel 20 the difference is that：The present embodiment is by polaroid 9071 directly as soft shown in embodiment two
Property base material 209, and polaroid 9071 is also flexible flexible material, and material property and the flexible parent metal 209 in embodiment two are special
Property is identical.Nano-silver thread conductive layer 903 is formed on polaroid 9071, in order to simultaneously make micro- deformation of polaroid 9071
At nano-silver thread conductive layer 903 inside tensile stress become compression, nano-silver thread conductive layer 903 need to be formed in polaroid
9071 lower surface, while the lower surface of polaroid 9071, close to optical module 9073,9071 top of polaroid is reflected by height
Rate adhesive layer 905 is pasted onto on cover board 901.The characteristic of high refractive index adhesive layer 905 can be reflected with the height in reference implementation example two
Rate adhesive layer 205.
Thus, be the flexible parent metal 209 for no longer needing to be PET in one layer of embodiment two, curved surface touch panel 90 first
Integral thickness be reduced.Secondly, polaroid 9071 has both the characteristic and position relationship of flexible parent metal 209, also can will be conductive
The tensile stress that layer 903 generates after 9071 micro- deformation of polaroid becomes compression, enhances electric conductivity and the attachment of conductive layer 903
Power.Certainly, when nano-silver thread conductive layer 903 is located under polaroid 9071, when relative on polaroid 9071, nanometer
Distance of the silver wire conductive layer 903 apart from touch surface is farther, light diffusion amount smaller, and mist degree is lower.
Meanwhile the nano-silver thread conductive layer 903 can also be with reference to fourth embodiment, in the upper of nano-silver thread conductive layer 903
Adhesion promoting layer 402 described in side's setting fourth embodiment, protective layer 608 and the 5th embodiment described in sixth embodiment is arranged in lower section
The optical match layer 506.
Display unit 207 of the present invention can be LCD display, and light-emitting diode display, OLED display can also use
On plasma display, on color flat panel display, opto-electronic device etc..
3 are please referred to Fig.1, curved surface touch panel 20 of the invention can be applied on some wearable devices 100, and life is formed
Smartwatch in work, Intelligent bracelet etc. is similar to wearable device 100.In above-mentioned wearable device 100, the curved surface touches
Control panel 20 fits in the top of display unit 207, is used for the I/O equipment of one of 100 human-computer interaction of wearable device,
Certain wearable device 100 can also be integrated with control module, and control module is for being connected connection and Control curve touch panel 20.
It is readily understood that the curved surface touch panel 20 in the present invention applies also for intelligent clothing, intelligent ornaments, Brilliant Eyes
Mirror, smart bracelet, the non-planars such as intelligent bangle are intelligently on wearable electronic equipment.
The effect that it has mainly is stated with the curved surface touch panel 20 of second embodiment herein, can not doubt ground,
Meet on the topology layout basis of the present embodiment, other embodiment also has same advantageous effect.
Compared with prior art, the touch control electrode material of curved surface touch panel 20 of the invention and wearable device 100 by
Traditional ITO materials replace with 801 material of nano-silver thread so that and more preferably, cost is lower for the conductive effect of curved surface touch panel 20,
Apparent visual effect is more preferable, caters to and gradually dominate the developing direction of touch-control product, forward-looking having with leading market
Beneficial effect.
Meanwhile curved surface touch panel 20 of the invention is mainly used on wearable intelligent electronic device, is using ring
Entire layer structure is easier to cause small deformation on border.Nano-silver thread conductive layer 203 is arranged in carrying nanometer the present invention
Under the flexible parent metal 209 of silver wire conductive layer 203, by the nano-silver thread conductive layer 203 that tensile stress should occur become by
209 deformation of flexible parent metal and generate compression.In this way, by the conversion of tensile stress to compression, although on the conductive layer of ITO simultaneously
Great effect will not be played, but for nano-silver thread conductive layer 203, inside be the nano-silver threads for having many filiforms
801 are dispersed in matrix 803, and finally embodying for electric conductivity is that the mutual of internal multiple nano-silver threads 801 overlaps to realize,
Excellent degree that overlapped is also closely related with internal tightness degree in addition to having outside the Pass with the quantity of nano-silver thread 801.Work as nanometer
Silver wire conductive layer 203 squeezes mutually overlap joint, makes due to deformation and when bearing compression between internal a plurality of nano-silver thread 801
Bond strength and overlap joint density increase, and conductivity drop is caused to be largely increased.Under the action of compression, it can also to receive
Rice silver wire conductive layer 203 is with flexible parent metal 209 mutually closer to so that the adhesive force of enhancing between the two, is greatly reduced and receives
Adhesive performance requirement between rice silver wire conductive layer 203 and flexible parent metal 209.
From the perspective of solving 801 mist degree of nano-silver thread, the present invention is by nano-silver thread conductive layer 203 by being located at flexible base
209 top of material moves to behind 209 lower section of flexible parent metal, by the covering of flexible parent metal 209, lowers nano-silver thread conductive layer
The light diffusion of nano-silver thread 801 on 203, to reduce the mist degree of nano-silver thread conductive layer 203.In addition, the present invention will be original
Adhesion-layer materials are improved, and high refractive index 205-OCA of adhesive layer glue is selected to be bonded the cover board 201 and flexible parent metal on upper layer
209, high refractive index adhesive layer 205 is located on nano-silver thread conductive layer 203, can effectively reduce nano-silver thread conductive layer 203
Reflection, solve the problems, such as that 801 mist degree of nano-silver thread is apparent.Meanwhile it being folded without additional increase with high refractive index adhesive layer 205
Layer is also beneficial to reduce the thickness of curved surface touch panel 20, obtains lightening effect.
From the perspective of product is lightening, sixth embodiment of the invention, should using protective layer 608 made of mixed materials
Protective layer 608 has both adherence and optical treatment characteristic, and individual high refractive index adhesive layer is no longer needed on laminated construction
205, and the optical treatment layer 506 of haze issues is handled, so as to reduce the integral thickness of screen body, realize that product is lightening
The haze issues of nano-silver thread conductive layer 603 can also be solved simultaneously.
In more excellent 8th embodiment of the present invention, polaroid 9071 is directly substituted to flexible parent metal 209 to carry nanometer
Silver wire conductive layer 903, and nano-silver thread conductive layer 903 is located at the lower section of polaroid 9071, and 9071 deformation of polaroid is generated
Tensile stress becomes compression.There is no the one side of the polaroid 9071 of nano-silver thread conductive layer 903 close to touch surface, reduces nano silver
The mist degree of line conductive layer 903, while the integral thickness of product is reduced, meet lightening demand.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all originals in the present invention
Any modification made by within then, equivalent replacement and improvement etc. should all include within protection scope of the present invention.
Claims (10)
1. a kind of curved surface touch panel, which is characterized in that including：
One cover board, it is touch surface to have first surface and second surface, the first surface；
One flexible parent metal and the nano-silver thread conductive layer being set on the flexible parent metal, the flexible parent metal are located at described second
Between surface and the nano-silver thread conductive layer；
After the flexible parent metal deformation, the curvature of the flexible parent metal and the nano-silver thread conductive layer is more than 0, the nano silver
Line conductive layer is compressed.
2. curved surface touch panel as described in claim 1, it is characterised in that：The thickness of the flexible parent metal and the nano silver
The thickness ratio of line conductive layer is more than 100, after the flexible parent metal deformation, and the nano-silver thread conductive lamination shrinkage is 0-25%.
3. curved surface touch panel as described in claim 1, it is characterised in that：After the flexible parent metal deformation, the nano silver
The conductivity of line conductive layer improves 0-40%.
4. curved surface touch panel as described in claim 1, it is characterised in that：Further comprise a high refractive index adhesive layer, it is high
For refractive index adhesive layer between the cover board and the flexible parent metal, the refractive index of the high refractive index adhesive layer is 1.52-
1.79。
5. curved surface touch panel as claimed in claim 4, it is characterised in that：The coated area of the high refractive index adhesive layer exists
Coating rate on the nano-silver thread conductive layer surface is not less than 50%.
6. curved surface touch panel as described in claim 1, it is characterised in that：The light transmittance of nano-silver thread conductive layer is at least
90%, mist degree is no more than 5%, and thickness is 50nm-200nm, and refractive index is 1.35-1.8.
7. curved surface touch panel as described in claim 1, it is characterised in that：The nano-silver thread conductive layer include a matrix and
The a plurality of nano-silver thread being distributed in the matrix, a plurality of nano-silver thread, which mutually overlaps, forms conductive network, nano-silver thread
Line length between 20-50 μm, line footpath is less than 50nm, and length-width ratio is more than 400.
8. curved surface touch panel as described in claim 1, it is characterised in that：Further comprise being set to the flexible parent metal with
Adhesion promoting layer between the nano-silver thread conductive layer, the coefficient of expansion of the adhesion promoting layer are less than the expansion system of the flexible parent metal
Number.
9. curved surface touch panel as described in claim 1, it is characterised in that：Further comprise that being set to the nano-silver thread leads
The protective layer of the transparent insulation on electric layer surface, including transparent sticky material and transparent dielectric material, sticky material are sense
Photosensitiveness sticker or thermosetting property sticker, dielectric material are selected from polyimide, silica, nitrogen Si oxide, epoxy resin, Asia
Any one of gram force polymer or combinations thereof, the refractive index of the protective layer are less than the refraction of the nano-silver thread conductive layer
Rate, the refractive index of the nano-silver thread conductive layer are less than the refractive index of the flexible parent metal.
10. a kind of wearable device, it is characterised in that：Including drive control module and such as claim 1-9 any one of them
Curved surface touch panel, drive control module are electrically connected the curved surface touch panel.
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| CN107015675B (en) | 2016-01-27 | 2020-01-07 | 广达电脑股份有限公司 | Substrate bonding apparatus and method |
| CN106444994A (en) * | 2016-11-11 | 2017-02-22 | 厦门祐尼三的新材料科技有限公司 | 3D cover plate integrated with full screen fingerprint identification and preparation method thereof |
| CN108648854A (en) * | 2018-05-10 | 2018-10-12 | 佛山市瑞福物联科技有限公司 | A kind of nano-silver thread conductive structure and preparation method thereof for wearable device |
| CN109002234A (en) * | 2018-07-11 | 2018-12-14 | 惠州市德赛西威汽车电子股份有限公司 | A kind of external hanging type antiradar reflectivity capacitive touch screen |
| CN111078063A (en) * | 2018-10-19 | 2020-04-28 | 昆山工研院新型平板显示技术中心有限公司 | Touch sensor and preparation method thereof |
| CN110197618B (en) * | 2019-06-28 | 2020-08-25 | 云谷（固安）科技有限公司 | Laminating method of curved-surface display panel |
| CN111651099A (en) | 2020-04-28 | 2020-09-11 | 北京载诚科技有限公司 | Touch device |
| CN111596791A (en) | 2020-04-28 | 2020-08-28 | 北京载诚科技有限公司 | Touch panel |
| CN111941985B (en) * | 2020-08-26 | 2022-09-30 | 武汉纺织大学 | Flexible strain sensing material and preparation method thereof |
| WO2022047676A1 (en) * | 2020-09-02 | 2022-03-10 | 京东方科技集团股份有限公司 | Flexible circuit board and preparation method therefor, touch panel and preparation method therefor |
| TWI744051B (en) * | 2020-10-26 | 2021-10-21 | 欣興電子股份有限公司 | Touch display device and manufacturing method thereof |
| CN114095681A (en) * | 2021-11-23 | 2022-02-25 | 深圳市华科创智技术有限公司 | Nano silver wire flexible touch screen television |
| CN116631676B (en) * | 2023-05-25 | 2024-04-26 | 江苏纳美达光电科技有限公司 | Conductive film, preparation method thereof and touch functional sheet |
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