CN103135865B - touch module and preparation method thereof - Google Patents
touch module and preparation method thereof Download PDFInfo
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- CN103135865B CN103135865B CN201110387168.9A CN201110387168A CN103135865B CN 103135865 B CN103135865 B CN 103135865B CN 201110387168 A CN201110387168 A CN 201110387168A CN 103135865 B CN103135865 B CN 103135865B
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Abstract
The present invention relates to a kind of touch module, comprising: a touch control component, a housing and a decorating film. Wherein, this housing is bending, and has the touch area of a bending, and described touch control component covers this touch area, and this touch area is used for this touch control component of touch-control; And this touch control component, housing and decorating film are one-body molded. The preparation method that the invention still further relates to a kind of above-mentioned touch module, this preparation method prepares this touch module mainly by conjunction with in-mold decoration processing procedure and two-sided film-coating technique.
Description
Technical field
The present invention relates to a kind of touch module and preparation method thereof, particularly relate to a kind of touch module with touch controllable function and preparation method thereof.
Background technology
In recent years, along with the diversified development of the electronic equipment with touch controllable function, 2.5 dimensions (2.5D) or the curved surface appearance design of 3 dimensions (3D) are moved towards in the appearance design of this electronic equipment with touch controllable function gradually. But, to meet the product design demand of curved surface, on material with processing procedure, all there is challenge greatly in existing touch technology.
First from material, existing touch screen whether resistance type touch control screen or capacitance type touch control screen, all adopt ITO as transparency conducting layer. But, owing to ITO is originally as fragile material, bending resistance is not good, therefore, and the problem easily producing damage when carrying out Machining of Curved Surface and causing electric conductivity not good.
From processing procedure, existing capacitance type touch control screen is to carry out Machining of Curved Surface, it is necessary to first carry out the laminating of transparent conductive layer and bend glass substrate, is then attached on the cover plate (CoverLens) of electronic equipment firmly pasting hard processing procedure again. Owing to bend glass processing is extremely low with hard patch two sections of yields of hard processing procedure, the production of the electronic equipment therefore with curved surface and touch controllable function is poor, so that production cost is higher.
Summary of the invention
In view of this, a kind of touch module with curved surface and touch controllable function of necessary offer and preparation method thereof, this touch module is still not three-dimensional, and has touch controllable function, and production cost is also relatively low.
A kind of touch module, comprising: a touch control component, a housing and a decorating film. Wherein, this housing is bending, and has the touch area of a bending, and described touch control component covers this touch area, and the kenel variation tendency of this touch control component is identical with the metamorphosis trend of described touch area, and this touch area is used for this touch control component of touch-control; And this touch control component, housing and decorating film are one-body molded, the edge of this touch control component is coated with by this housing.
A kind of preparation method of touch module, it comprises the following steps: provide a touch control component, a decorating film and a mould, wherein, this touch control component is a flexible member, this mould includes a master mold and a male model, and described master mold and male model are respectively provided with die joint, and this die joint is bending; Described touch control component and decorating film are individually fixed in the described die joint of described master mold and described male model, and the kenel variation tendency of this touch control component and decorating film is identical with the metamorphosis trend of described die joint; Matched moulds, and inject an injecting forming material in described mould, carry out injection moulding, make this injecting forming material form a housing, thus forming described touch module; And the demoulding, taking out described touch module, this touch control component, housing and decorating film are one-body molded, and the edge of this touch control component is coated with by this housing.
Compared with prior art, touch module provided by the invention has the advantage that the housing in described touch module is bending, and described touch control component covers the touch area on the housing of this bending, and this touch control component, housing and decorating film are one-body molded, making this touch control component and described decorating film be securely fixed on the housing of bending, therefore this touch module not only has three-dimensional outward appearance and also has touch controllable function simultaneously. Additionally, the preparation method of touch module provided by the invention integrates in-mold decoration forming processing procedure and two-sided film-coating technique, together utilize in-mold decoration forming processing procedure to make described touch control component and decorating film simultaneously and form described touch module, the preparation method making this touch module is fairly simple, and cost is relatively low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the touch module that the embodiment of the present invention provides.
Fig. 2 is the generalized section of embodiment of the present invention III-III line along Fig. 1.
Fig. 3 is the structural representation of the touch control component in Fig. 1 and decorating film.
Fig. 4 to Fig. 7 is the preparation flow schematic diagram of the touch module of the embodiment of the present invention.
Main element symbol description
Mould 100
Master mold 110
Die cavity 112
Male model 120
Injection hole 122
Touch module 20
Touch control component 210
Substrate 212
Carbon nanotube layer 214
First electrode 216
Second electrode 218
Flexible PCB 219
Housing 220
Touch area 222
Decorating film 230
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
The present invention provides a kind of touch module with curved surface, and this touch module includes a touch control component, a housing and a decorating film. Wherein, described housing is bending, overall in bending. This housing has the touch area of a bending, and described touch control component covers this touch area, and this touch area, in order to this touch control component of touch-control, shows the display page of the electronic device using this touch module simultaneously. This touch control component, housing and decorating film are one-body molded.
Described touch module is three-dimensional, has 2.5 dimensions (2.5D) or 3 dimension (3D) structures. This touch module can be that the cover plate of mobile phone, the shell of automobile-used integration navigation system or Japan's description printing study the user oriented collection touch control component of electronic device such as shell of the contact panel of three-dimensional shape and the module of housing.
Described housing can be arcuation or step-like wait case of bending so that this housing is non-flat structure, has 2.5D or 3D structure so that this housing show curved surface outward appearance. Described touch area is arranged on the knee of this housing so that this touch area is also in arcuation or the case of bending such as step-like. This housing has the inner surface that an outer surface and one and this outer surface are oppositely arranged, and its outer surface is the surface towards user; The outer surface of the outer surface of the touch area of this housing and inner surface respectively described housing and a part for inner surface. Described touch control component can be fitted respectively with described decorating film and is arranged on the both sides that described housing is oppositely arranged, wherein the laminating of this touch control component is arranged on the inner surface of described housing, and fit with the inner surface of this touch area and to arrange, this decorating film is fitted in the outer surface of this housing, so that this housing is fixed between this touch control component and decorating film. It is appreciated that this touch control component can also be arranged at the outer surface of this housing so that this touch control component is fixed between this housing and this decorating film.
This housing can be the shell of the electronic devices such as mobile phone, navigator, steering wheel. the material of described housing can be the transparent materials such as polystyrene (PS), Merlon (PC) or polymethyl methacrylate (PMMA), it can also be acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), polycarbonate/acrylonitrile-butadiene-phenylethene copolymer blend (PC/ABS), polycarbonate/polybutylene terephthalate blend (PC/PBT), Merlon/polyethylene terephthalate blend (PC/PET), Merlon/polymethyl methacrylate blend (PC/PMMA) or polyamide (PA) etc. be colored or opaque plastics. the material of described housing and thickness can select according to actual needs, and e.g., when the described housing of needs is transparent, the material of this housing can be PMMA. wherein, when described housing is transparent material, this touch module is displayed in device. when described housing is colored or opaque material, this touch module may be used in the electronic device that steering wheel etc. does not need display.
Described touch control component is one-body molded with described housing, and the edge of this touch control component is coated with by this housing so that this touch control component is securely fixed on described housing. Specifically, owing to this touch area is case of bending, this touch control component is a flexible unit, so this touch control component covers this touch area along with the change of the form of this touch area, so that around the fixing touch area on the housing of this touch control component, also make this touch control component in case of bending in this touch module, and the kenel variation tendency that this touch control component is in this touch module is basic identical with the metamorphosis trend of touch area. As, when the touch area of described housing is arcuation, this touch control component covers this touch area along with the arc variation tendency of this touch area, and is fixed on around this touch area, so that this touch control component is also arcuation in this touch module. When the touch area of this housing is stepped, this touch control component is fixed on around this touch area along with the variation tendency of the state of touch area, so that this touch control component is also stepped in this touch module.
Described touch control component is condenser type CNT touch sensor. This touch control component includes a carbon nanotube layer and at least two electrode electrically connected with this carbon nanotube layer, and this carbon nanotube layer is arranged near described decorating film. This carbon nanotube layer is mainly used as transparency conducting layer in this touch control component, and therefore, this carbon nanotube layer covers the touch area of described housing. This carbon nanotube layer includes multiple CNT; Preferably, the plurality of CNT preferred orientation in the same direction extends, and the CNT that the CNT on same bearing of trend is adjacent is joined end to end by Van der Waals force. Wherein, described carbon nanotube layer includes at least one carbon nano-tube film. When described carbon nanotube layer includes multiple carbon nano-tube film, this carbon nano-tube film can be arranged in the parallel and coplanar setting of gapless or stacking, and the CNT in the plurality of carbon nano-tube film is arranged of preferred orient substantially in the same direction, the orientation of the namely adjacent CNT in carbon nano-tube film is basically identical. Owing to the CNT in this carbon nano-tube film has good pliability so that this carbon nano-tube film has good pliability, it is possible to bending fold becomes arbitrary shape to be not easily broken; And still there is good transparency and electric conductivity. The thickness of described carbon nanotube layer is 0.5 nanometer��100 microns; Preferably, the thickness of this carbon nanotube layer is 100 nanometers��200 nanometers. This carbon nanotube layer has a desirable transmittance, and the visible light transmissivity of single-layered carbon nanotube periosteum is more than 85%, and in this carbon nanotube layer, the number of plies of carbon nano-tube film is not limit, as long as desirable transmittance can be had.
Described at least two electrode is arranged at the surface of this carbon nanotube layer, and electrically connects with this at least two electrode. The material of described electrode is metal, CNT, conductive silver paste or other conductive materials, as long as guaranteeing that this electrode can conduct electricity. Preferably, the material of this electrode is CNT or conductive silver paste; Wherein, the impact affecting or being bent that the electric conductivity of CNT and conductive silver paste is little affected by bending is smaller, and is flexible material.
Described touch control component farther includes a flexible substrates, and described carbon nanotube layer is arranged at the surface of this flexible substrates. This carbon nanotube layer is arranged near described decorating film, and described flexible substrates is arranged away from described decorating film, and is used for supporting described carbon nanotube layer and described at least two electrode. The material of this flexible substrates is the material with characteristics such as flexibility, high temperature resistant and electric insulations, can be specifically the materials such as the polyester materials such as Merlon (PC), polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET), or polyether sulfone (PES), cellulose esters, polrvinyl chloride (PVC), benzocyclobutene (BCB) or acrylic resin. Preferably, the material of this flexible substrates is the clear flexible material such as PMMA or PC.
Described touch control component can further include a flexible PCB, and this flexible PCB is arranged at the side of described carbon nanotube layer and electrically connects with described at least two electrode, for electrically connecting with other unit, makes this touch control component work.
It is appreciated that described touch control component can also increase other functional layer in position, such as screen layer, protective layer etc.
Described decorating film is mainly used in identifying this touch module, makes this touch module have certain pattern or color, thus reaching to make this touch module have the outward appearance created an aesthetic feeling, it is also possible to show that this touch module realizes key icon and the brand etc. of various function touch-control. The outer surface of the corresponding described housing of this decorating film is arranged so the form of this decorating film with the homomorphosis of the outer surface of described housing, and should change along with the change of form of outer surface of this housing. This decorating film is arranged on the surface of described touch module, for the surface that user is directly visual, makes described housing avoid abrasion and the function scratched so this decorating film also has. This decorating film can also include the metallic diaphragm utilizing the method such as vacuum vapour deposition, vacuum splashing and plating method to be formed, and this decorating film can make described touch module surface present metallic luster. Wherein, when this touch module is applied in display device, the part that this decorating film is corresponding with the touch area of described housing should be transparent, in order to user sees the display page of display device; Other region of this decorating film can be designed to the color needed.
Touch control component and decorating film in described touch module are one-body molded by described injecting forming material, and this injecting forming material forms housing, and therefore, described touch control component and decorating film can be securely fixed on described housing simultaneously. Additionally, due to described touch control component has touch controllable function, so this touch module also has touch controllable function. Further, since described touch control component is flexible, bent, so this touch module is three-dimensional, there are 2.5 dimensions or 3 dimension structures. Therefore, this touch module can both have touch controllable function, has again stereochemical structure.
The preparation method that the present invention further provides a kind of above-mentioned touch module, this preparation method prepares described touch module mainly in conjunction with in-mold decoration processing procedure and two-sided film-coating technique. Specifically, this preparation method comprises the following steps: a, it is provided that described touch control component, described decorating film and a mould, and this mould includes a master mold, a male model; B, is individually fixed in described master mold and described male model by described touch control component and decorating film; C, matched moulds, injects an injecting forming material and carries out injection moulding in described mould, form described touch module; And d, the demoulding, take out described touch module.
In step a, the master mold in described mould and male model matched moulds form a die cavity, and this die cavity is used for placing described touch control component and decorating film. The concrete structure of this mould is relevant with the structure of required touch module, it is possible to mould according to the structure fabrication of described touch module, it is particularly possible to the structure fabrication mould according to described shell. Described male model is formed with an injection hole, for being injected in this die cavity by injection material to be formed. The shape of this die cavity should with the form fit of this touch module.
This master mold is towards the die joint that surface is this master mold of described male model, the die joint of this master mold has a selection area, this selection area is for fixing the region of described touch control component, the selection area of this master mold die joint should with the form fit of described touch control component for the shape and structure fixing the region of described touch control component, in order to be fixed on the die joint of this master mold by described touch control component.
Described male model is provided with through the injection hole of this male model, for being injected in described die cavity by the injection material of molten condition. Preferably, this injection hole is arranged near the edge of die cavity in this die cavity, to ensure that the stub bar that injection moulding formed is formed in the non-tactile region of described housing, has substantially no effect on the electric conductivity of carbon nanotube layer in described touch control component. It is appreciated that this mould can have multiple injection hole. This male model is towards the die joint that surface is this male model of described master mold, the die joint of this male model has a selection area, the form fit of the shape of the selection area of this male model die joint and structure and described decorating film, for being fixed on the die joint of this male model by this decorating film. The die joint of the die joint of this male model and described master mold is oppositely arranged, and can form described die cavity.
Described mould may further include one first film feeder, and this first film feeder includes a pair thin film delivery wheel and a pair directive wheel. The pair of thin film delivery wheel is divided into the upper and lower sides of mould, is used for drawing described decorating film, is sent in the die cavity of described mould by this decorating film. Described directive wheel is for guiding the direction of transfer of this decorating film.
Described touch control component is fixed on the selection area of described master mold by step b, and the flexible substrates of this touch control component is fitted in the selection area of master mold; And described decorating film is fixed on the selection area of described male model. Wherein, described touch control component can be fixed on the selection area of described master mold by the method for vac sorb.
Described decorating film can be sent to the selection area of male model by described first film feeder, specifically, adopt described first film feeder draw described decorating film and make this decorating film deliver between this male model and master mold along the die joint of described male model and be located on the die joint of male model, make decorating film be fitted in the selection area of die joint of this male model 120.
Described mould still further comprises one second film feeder. The structure of this second film feeder is identical with the structure of the first film feeder, described touch control component can be sent to the selection area of master mold by this second film feeder, specifically, described touch control component is under the traction of this second film feeder, it is sent to the selection area of this master mold along described master mold die joint, makes this touch control component be securely fixed on the selection area of this master mold.
Step c specifically includes following steps: first, merges described male model and forms described die cavity with master mold. Secondly, being filled with described injecting forming material, this injecting forming material is injected in described die cavity by the injection hole of male model, until this injecting forming material is fully filled with this die cavity; It is fixed on the described decorating film on described male model die joint and the touch control component that is fixed on described master mold die joint adheres to the surface of described injecting forming material simultaneously. Then, cool down this injecting forming material, make this injecting forming material form described housing, thus forming touch control component, housing, the integrated touch module of decorating film. Wherein, described injecting forming material is the raw material of described housing.
When described decorating film is transmitted by described first film feeder, under the extruding of the die joint of described male model, the decorating film adhering to described injecting forming material surface cuts from this first film feeder so that it is depart from the decorating film on the first film feeder.
Described touch module, for opening described male model and master mold, is ejected by step d, can obtain surface and be attached with the touch module of decorating film and touch control component respectively.
Owing to described touch control component includes a carbon nanotube layer, this carbon nanotube layer has good pliability, it can be coiled material, this touch control component is a flexible member, it is possible to adopt volume to volume processing procedure (roll-to-roll) to provide this touch control component, therefore, the second film feeder that described mould provides can quickly provide described touch control component, such that it is able to reach quickly to produce described touch module, and reach to improve production efficiency, reduce the purpose of production cost. Owing to described carbon nanotube layer has the characteristic that good resistance to bending, high pressure resistant, high temperature resistant, stable in properties and surface abrasion ability are stronger, so adopting said method to prepare in the process of this touch module, this carbon nanotube layer is substantially free of and is damaged, and still has good electric conductivity; If, this carbon nanotube layer is through 285 DEG C, after 700 atmospheric pressure, still having flexibility, its surface is substantially free of breakage, electric conductivity is substantially free of significant change; Therefore, this touch module has touch controllable function. This touch module adopts the method for injection molding in mold and two-sided peplos while making the described housing of formation, described touch control component and decorating film is together fixed on housing again, and therefore, the preparation method of this touch module is fairly simple. Separately, owing to described touch control component is flexible, so the yield of this touch module is of a relatively high.
Below in conjunction with the accompanying drawings and the specific embodiments, touch module provided by the invention and preparation method thereof is described in further detail.
Referring to Fig. 1 to Fig. 2, the embodiment of the present invention provides a touch module 20, and this touch module 20 includes touch control component 210, housing 220 and a decorating film 230. Wherein, described housing 220 is arranged between described touch control component 210 and decorating film 230, and this touch control component 210 and decorating film 230 are one-body molded, and the surrounding of this touch control component 210 is coated with by this housing 220. Specifically, in the described injection molding process of housing 220, this touch control component 210 and decorating film 230 are also secured on this housing 220.
In the present embodiment, described touch module 20 is a mobile phone protecgulum. Described housing 220 overall appearance is arcuation. This housing 220 includes a touch area 222 in arcuation, and this touch area 222 is positioned at the middle part of this housing 220, and described touch control component 210 covers the inner surface of this touch area 222, this touch area 222 touch control component 210 described in touch-control. This touch area 222 is the arc structure that the straight line of the arc by two opposing parallel settings and two opposing parallel settings surrounds. The material of this housing 220 is transparent PMMA. Described touch control component 210 is a flexible capacitance type touch control component, and this touch control component 210 is fixed on the touch area 222 of the inner surface of this housing 220 around along with the change of the form of the touch area 222 of this housing 220.
Refer to Fig. 3, described decorating film 230 is arranged on the outer surface of described housing 220, and this decorating film 230 part corresponding with the touch area 222 of described housing 220 is transparent, the other parts of this decorating film 230 are mainly black, and are printed with the brand XXX of this mobile phone. Described capacitive touch control element 210 include PET base 212, carbon nanotube layer 216, two the second electrodes 218 of 214, two the first electrodes and with a flexible PCB 219. The laminating of this carbon nanotube layer 214 is arranged at the surface of this substrate 212, and covers described touch area 222, as the transparency conducting layer of this touch control component 210. Said two the first electrode 216 and two the second electrodes 218 are respectively separated the edge being arranged at described carbon nanotube layer 214. Described flexible PCB 219 is electrically connected with described carbon nanotube layer 214 by said two the first electrode 216 and two the second electrodes 218. Wherein, these two the first electrodes 216 and two the second electrodes 218 all have conductive silver glue to constitute, so these two the first electrodes 216 and two the second electrodes 218 also have flexibility, it is possible to bend along with the metamorphosis of inner surface of housing 220.
Described carbon nanotube layer 214 is single-layered carbon nanotube periosteum, and this carbon nanotube layer is a self supporting structure. This carbon nanotube layer 214 includes multiple CNT being parallel to each other and be axially arranged of preferred orient in the same direction. Most of CNT in this carbon nanotube layer 214 joins end to end along the direction that CNT extends and axially extends generally along same direction preferred orientation. Further, this carbon nanotube layer 214 includes multiple carbon nano-tube bundle being arranged of preferred orient in the same direction, and this carbon nano-tube bundle has of substantially equal length and is arranged in continuous print carbon nanotube layer end to end.
Owing to described CNT has good electric conductivity along the axial direction being parallel to CNT, and the axial of the CNT in this carbon nanotube layer 214 extends substantially along same direction, therefore, the resistance of the axially direction of the CNT of described carbon nanotube layer 214 is much smaller than other directions, and the direction is defined as Low ESR direction. In the present embodiment, said two the first electrode 216 is perpendicular to Low ESR direction and arranges. The resistance of the axially direction being perpendicular to CNT of this carbon nanotube layer 214 is much larger than other directions, and therefore the direction can be further defined as a high impedance direction. In addition, substantially in the most of CNTs extended in the same direction in described carbon nanotube layer 214, each CNT is joined end to end by Van der Waals force with CNT adjacent in the direction of extension, and described carbon nano-tube film there is also the CNT of minority random alignment, the CNT of these random alignment can contact with each other with other adjacent CNTs, so that this carbon nanotube layer 214 still has electric conductivity in high impedance direction, simply relatively big compared to this carbon nanotube layer of other directions resistance in this high impedance direction, electrical conductivity is relatively low. Said two the second electrode 218 is perpendicular to high impedance direction and arranges. Said two the first electrode 216 and two the second electrodes 218 are to be formed by the four limit printing conductive silver glues at described carbon nanotube layer 214.
Referring to Fig. 4 to Fig. 7, the present invention provides a kind of method preparing above-mentioned touch module 20, and the method comprises the following steps:
(S100) providing described touch control component 210, described decorating film 230 and a mould 100, this mould 100 includes master mold 110 and a male model 120; (S200) described touch control component 210 and decorating film 230 are individually fixed in described master mold 110 and male model 120; (S300) inject the injection moulding in described mould 100 of PMMA material, form described mobile phone protecgulum touch module 20; And (S400) demoulding, from described mould 100, take out described mobile phone protecgulum.
In the step s 100, referring to Fig. 4, the concrete structure of this mould 100 is relevant with the structure of required touch module, it is possible to mould 100 according to the structure fabrication of described touch module. This master mold 110 forms a die cavity 112 with male model 120 matched moulds, and this die cavity 112 is used for fixing described touch control component and decorating film. Described male model 120 is formed an injection hole 122 running through this male model 120, for injection material PMMA to be formed is injected in this die cavity 112, this injection hole 122 is arranged on the edge of described die cavity 112, to ensure that the stub bar that PMMA injection moulding is formed is formed in the non-tactile region of described housing 220, have substantially no effect on the electric conductivity of described carbon nanotube layer. Wherein, the master mold 110 of described mould 100 and the shape of male model 120 and structure respectively with the mating shapes of described touch control component 210 and decorating film 230. Described mould 100 also includes one first film feeder (not shown) and one second film feeder (not shown).
Refer to Fig. 5, step S200 specifically comprises the following steps: adopt described first film feeder to draw described decorating film 230, and make this decorating film 230 deliver between this male model 120 and master mold 110 along the die joint of described male model 120, and be fixed on male model 120, make this decorating film 230 be fitted in the die joint of this male model 120; And adopt described second film feeder to draw described touch control component 210, and make this touch control component 210 deliver between this master mold 110 and male model 120 along the die joint of described master mold 110, and be fixed on the die joint of master mold 110, make the PET base 212 of this touch control component 210 be fitted in the die joint of this master mold 110.
Refer to Fig. 6 step S300 and specifically include following steps: first, merge described male model 120 and master mold 110. Secondly, inject PMMA, the injection hole 122 injection moulding PMMA to PMMA of male model 120 fill up described die cavity 112; It is attached to the described decorating film 230 in die cavity 112 and described touch control component 210 adheres to PMMA surface. Then, stop injecting PMMA, and cool down.
In merging the described master mold 110 process with male model 120, under the extruding of described master mold 110 and the die joint of described male model 120, the touch control component 210 of PMMA housing 220 two sides adhering to described touch module 20 is cut with decorating film 230, and departs from the decorating film on the touch control component on the second film feeder and the first film feeder respectively.
Refer to Fig. 7, step S400 particularly as follows: open described male model 120 and master mold 110, the touch module 20 of described mobile phone protecgulum is ejected, surface can be obtained and be attached with the mobile phone protecgulum of decorating film 230 and touch control component 210 respectively.
Do not sustained damage after High Temperature High Pressure by the carbon nanotube layer 214 of the touch control component 210 in touch module 20 prepared by said method, so the correlated performance of this carbon nanotube layer 214 is substantially free of significant change, as, the square resistance of described carbon nanotube layer 214 is little in change before and after in-mold decoration processing procedure, so the conductive characteristic of this carbon nanotube layer 214 is also without significant change. Said two the first electrode 216 and two the second electrodes 218 are conductive silver glue, being substantially free of damage after above-mentioned in-mold decoration processing procedure, still have good electric conductivity. Described flexible PCB 219 is also being substantially free of damage after above-mentioned in-mold decoration processing procedure. Therefore, the touch controllable function of described touch control component 210 is not substantially affected by the impact of in-mold decoration processing procedure, and described touch module 20 has touch controllable function.
Touch module that the embodiment of the present invention provides and preparation method thereof has the advantage that first, the touch module that the embodiment of the present invention provides mainly adopts the method for injection molding in mold and two-sided peplos while making the housing described in formation with bending, again described touch control component and decorating film are fixed on the housing together, therefore, the preparation method of this touch module is fairly simple, it is capable of on curved surface pad pasting, and the yield of product is higher, advantageously reduces cost. Separately, the method of injection molding in mold can so that described housing be bending, described touch control component and decorating film are flexible member, this touch control component covers the touch area on the housing of this bending, and this touch control component, housing and decorating film are one-body molded so that this touch control component and described decorating film are securely fixed on the housing of bending, so, this touch module is possible not only to be curved surface, has stereochemical structure and the outward appearance created an aesthetic feeling, also has touch controllable function. Second, described touch control component is flexible member, and it can be coiled material, it is possible to what adopt volume to volume processing procedure provides described touch control component for described mould rapidly, thus further up to the purpose reducing production cost. 3rd, described carbon nanotube layer is after above-mentioned in-mold decoration forming processing procedure, and its electric conductivity is substantially free of significant change, and, the performance of other ingredient in this touch control component is also not substantially affected by the impact of this in-mold decoration forming processing procedure. Therefore, described touch control component still has touch controllable function after processing through in-mold decoration forming, so, this touch module has touch controllable function so that use the electronic device of this touch module to have touch controllable function.
It addition, those skilled in the art can also do other change in spirit of the present invention, these changes done according to present invention spirit, all should be included in present invention scope required for protection.
Claims (17)
1. a touch module, comprising: a touch control component, a housing and a decorating film, it is characterized in that, this housing is bending, and there is the touch area of a bending, described touch control component covers this touch area, and the metamorphosis trend of this touch control component is identical with the metamorphosis trend of described touch area, and this touch area is used for this touch control component of touch-control; And this touch control component, housing and decorating film are one-body molded, the edge of this touch control component is coated with by this housing.
2. touch module as claimed in claim 1, it is characterised in that described touch control component is arranged on, with the laminating of described decorating film, the both sides that described housing is oppositely arranged.
3. touch module as claimed in claim 1, it is characterised in that described touch control component is fixed between described housing and described decorating film.
4. touch module as claimed in claim 1, it is characterised in that described touch control component is capacitive touch control element.
5. touch module as claimed in claim 1, it is characterised in that described touch control component includes a carbon nanotube layer and at least two electrode, and this at least two electrode electrically connects with this carbon nanotube layer, and this carbon nanotube layer covers described touch area.
6. touch module as claimed in claim 5, it is characterised in that described carbon nanotube layer includes multiple CNT, and the plurality of CNT preferred orientation in the same direction extends.
7. touch module as claimed in claim 5, it is characterised in that described touch control component farther includes a flexible substrates, and described carbon nanotube layer is arranged at the surface of this flexible substrates, and this flexible substrates is arranged away from described decorating film.
8. touch module as claimed in claim 7, it is characterised in that described touch control component farther includes a flexible PCB, and this flexible PCB electrically connects with described at least two electrode.
9. touch module as claimed in claim 1, it is characterised in that described touch control component is fixed on this housing around described touch area.
10. touch module as claimed in claim 1, it is characterised in that described touch area is arcuation or stepped.
11. touch module as claimed in claim 10, it is characterised in that described touch control component is arcuation or stepped.
12. touch module as claimed in claim 1, it is characterised in that described housing is phone housing, navigator shell or steering wheel shell.
13. touch module as claimed in claim 1, it is characterised in that described housing is transparent material, and the part that described decorating film is corresponding with the touch area of this housing is transparent.
14. a preparation method for touch module, it comprises the following steps:
Thering is provided a touch control component, a decorating film and a mould, wherein, this touch control component is a flexible member, and this mould includes a master mold and a male model, and described master mold and male model are respectively provided with die joint, and this die joint is bending;
Described touch control component and decorating film are individually fixed in the described die joint of described master mold and described male model, and the metamorphosis trend of this touch control component and decorating film is identical with the metamorphosis trend of described die joint;
Matched moulds, and inject an injecting forming material in described mould, carry out injection moulding, make this injecting forming material form a housing, thus forming described touch module; And
The demoulding, takes out described touch module, and this touch control component, housing and decorating film are one-body molded, and the edge of this touch control component is coated with by this housing.
15. the preparation method of touch module as claimed in claim 14, it is characterized in that, described mould farther includes one first film feeder, described male model has a male model die joint, wherein described decorating film being fixed to the step in described male model is: described decorating film, under the traction of this first film feeder, is sent to the selection area of this male model die joint along described male model die joint; And this decorating film is fixed on this male model die joint.
16. the preparation method of touch module as claimed in claim 15, it is characterized in that, described mould farther includes one second film feeder, described master mold has a master mold die joint, this master mold die joint and described male model die joint are oppositely arranged, wherein described touch control component being fixed to the step in described master mold is: described touch control component, under the traction of this second film feeder, is sent to the selection area of this master mold die joint along described master mold die joint; And this touch control component is fixed on this master mold die joint.
17. the preparation method of touch module as claimed in claim 14, it is characterised in that described matched moulds, and inject an injecting forming material and in described mould, carry out injection molding step include: merge described master mold and form a die cavity with described male model; Described injecting forming material is filled in this die cavity, until this injecting forming material is fully filled with this die cavity, is fixed on the described decorating film on described male model and is fixed on the touch control component on described master mold and adheres to the surface of described injecting forming material simultaneously; And cooling, make this injecting forming material form the housing with touch area, thus forming touch control component, housing, the integrated touch module of decorating film.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104346017A (en) * | 2013-08-09 | 2015-02-11 | 天津富纳源创科技有限公司 | Preparation method of curved surface touch module |
| CN104978054A (en) * | 2014-04-01 | 2015-10-14 | 天津富纳源创科技有限公司 | Thin type flexible electronic device |
| JP6264363B2 (en) * | 2015-12-03 | 2018-01-24 | Smk株式会社 | Touch sensor, touch panel and electronic device |
| CN107759056A (en) * | 2016-01-26 | 2018-03-06 | 广东欧珀移动通信有限公司 | A kind of cover-plate glass mould |
| CN105607779A (en) * | 2016-02-24 | 2016-05-25 | 昆山峰实电子科技有限公司 | 3D touch panel and preparation method thereof |
| CN107920431B (en) * | 2016-10-11 | 2023-10-13 | 芋头科技（杭州）有限公司 | Circuit board assembly structure |
| CN111433718A (en) * | 2017-12-27 | 2020-07-17 | 深圳市柔宇科技有限公司 | Curved surface touch control induction device and forming method thereof |
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| CN101458600A (en) * | 2007-12-14 | 2009-06-17 | 清华大学 | Touch screen and display device |
| TW201040699A (en) * | 2009-05-08 | 2010-11-16 | Taiwan Green Point Entpr Co | Touch panel module and method of making the same |
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| KR100778483B1 (en) * | 2006-07-27 | 2007-11-21 | 엘지전자 주식회사 | Portable terminal |
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| CN101458600A (en) * | 2007-12-14 | 2009-06-17 | 清华大学 | Touch screen and display device |
| TW201040699A (en) * | 2009-05-08 | 2010-11-16 | Taiwan Green Point Entpr Co | Touch panel module and method of making the same |
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