CN104965612A - Touch screen module and preparation method therefor - Google Patents
Touch screen module and preparation method therefor Download PDFInfo
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- CN104965612A CN104965612A CN201410124750.XA CN201410124750A CN104965612A CN 104965612 A CN104965612 A CN 104965612A CN 201410124750 A CN201410124750 A CN 201410124750A CN 104965612 A CN104965612 A CN 104965612A
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Abstract
The invention discloses a touch screen module and a preparation method therefor in order to solve the technical problem of layering or fragmentation which often occurs when a touch screen in the prior art falls off. The touch screen module herein comprises: a cover board, a sensing module and a frame body for bearing the cover board and the sensing module, wherein the cover board, the sensing module and the frame body are successively arranged, and the cover board and the sensing module are provided with a first colloid layer therebetween, and the sensing module and the frame body are provided with a second colloid layer therebetween, and the outer circumference of the sensing module is provided with at least one opening portion, and the second colloid layer fills inside the opening portion so as to bond the cover board and the frame body. The cover board and the frame body are bonded together through the opening portion, so that the whole touch screen module can be firmer, and layering or fragmentation when the touch screen falls off can be prevented.
Description
Technical field
The present invention relates to touch-screen field, particularly relate to a kind of capacitive touch screen module and preparation method thereof.
Background technology
GFF(Glass-film-film of the prior art, glass cover-plate-conductive film-conductive film) or GF(Glass-film, glass cover-plate-conductive film) need in manufacturing process glass cover-plate and conductive film and plastic frame body to combine, generally adopt foam double faced adhesive tape by plastic frame body together with conductive film adhering.Because foam double faced adhesive tape can provide certain cushion effect, not easily there is layering or cracked phenomenon in each layer assembly of the mobile terminals such as mobile phone touch-screen when falling.But along with the narrow frame design of large-size screen monitors is more and more universal in mobile phone or panel computer, become the development trend of touch-screen, this just has higher requirement to the waterproof and dustproof effect of touch-screen and cost control.And traditional foam double faced adhesive tape attaching process can not meet above-mentioned requirements, increasing manufacturer is attempting using hot melt adhesive plastic frame body and conductive film to be fit together.And hot melt adhesive has superpower bounding force and almost nil cushion effect, making the equipment such as mobile phone or panel computer when falling, very easily there is layering or cracked phenomenon in each assembly of touch-screen.For existing GFF touch-screen, general by OCA(Optical Clear Adhesive between glass cover-plate and conductive film and two-layer conductive film, Optical transparent adhesive) optical cement bonding, and bondd by hot melt adhesive between conductive film and plastic frame body, the bounding force between such plastic frame body and conductive film is far longer than the bounding force between conductive film and glass cover-plate and two-layer conductive film.Cohesive force due to hot melt adhesive is far longer than the cohesive force of OCA optical cement, and this kind of touch-screen very easily produces conductive film and glass cover-plate and the lamination between conductive film and conductive film when falling; Simultaneously owing to not having buffer action, the glass cover-plate of touch-screen and the glass plate of liquid crystal display are also very easily chipping.Superpower bounding force due to hot melt adhesive makes touch-screen be difficult to reprocess when there are the problems referred to above.
Summary of the invention
Easily there is layering or cracked technical matters when falling in order to solve existing touch-screen, the invention provides a kind of touch-screen module.
Touch-screen module of the present invention comprises the cover plate, induction module and the framework for carrying cover plate and induction module that set gradually, the first colloid layer is provided with between described cover plate and induction module, the second colloid layer is provided with between described induction module and framework, the periphery of described induction module has at least one peristome, described second colloid layer be filled in described peristome and by cover plate and framework bonding.
Further, described induction module is rectangle, and described peristome is located at the corner of induction module.
Further, described peristome is two, is opened in the diagonal position of induction module respectively.
Further, the area of described cover plate is greater than the area of described induction module, and the periphery that described peristome comprises cover plate does not cover the part of induction module.
Further, described cover plate is glass cover-plate, and described framework is plastic frame body.
Further, described first colloid layer is solid state optics glue-line.
Further, described second colloid layer is hot melt adhesive layer.
Further, described induction module comprises the first conductive film and the second conductive film, is provided with the 3rd colloid layer between described first conductive film and the second conductive film.
Further, described first conductive film and the second conducting film comprise base material respectively and are formed in the circuitous pattern on base material.
Further, described 3rd colloid layer is solid state optics glue-line.
Further, described induction module comprises layer of conductive film, and described conductive film comprises base material and is formed in the conducting wire on base material.
Conductive film and plastic frame body are bonded together by hot melt adhesive by touch-screen module of the present invention, meet the narrow frame of existing touch-screen giant-screen to the requirement of attaching process.Simultaneously owing to arranging peristome in induction module periphery, induction module and framework are not only bonded together by hot melt adhesive layer, cover plate and framework are bonded together by peristome by hot melt adhesive layer simultaneously.Because hot melt adhesive has superpower cohesive force, make whole touch-screen module tightly be bonded to an entirety, the hot melt adhesive being simultaneously filled into peristome plays the effect of reinforcing and supporting as column, not easily occurs layering and cover plate cracked phenomenon when touch-screen is fallen.
For achieving the above object, present invention also offers a kind of preparation method of touch-screen module, comprising the following steps:
S1: prepare cover plate, induction module and framework;
S2: the periphery of induction module is punched out at least one peristome, and the first surface of the induction module after die-cut is bonded together by the first colloid layer and cover plate;
S3: apply the second colloid layer on the periphery of induction module second surface and cover plate corresponding to peristome;
S4: the assembly of induction module and cover plate is bonded together by the second colloid layer and framework.
Further, the described first surface at induction module and second surface are rectangle, punch out four peristomes in step S2 at the corner place of first surface and second surface.
Further, in described step S3, the second colloid layer is coated on induction module periphery and cover plate corresponding to peristome by the mode of some glue.
Further, described first colloid layer is solid state optics colloid layer, and described second colloid layer is hot melt adhesive layer.
Touch-screen module preparation technology of the present invention, by processing peristome in induction module, and on the periphery of induction module and framework surface of contact and cover plate corresponding to peristome coating hot-melt adhesive, induction module and framework and cover plate and framework are bonded together with hot melt adhesive simultaneously, make whole touch-screen modular structure more firm, solve and when touch-screen falls, easily to occur layering or the cracked problem of cover plate, and preparation technology is simple, production efficiency is high, is adapted at applying in large-scale production.
Accompanying drawing explanation
Fig. 1 is the cut-open view of first embodiment of the invention touch-screen module;
Fig. 2 is the upward view in first embodiment of the invention after induction module and cover plate combination;
Fig. 3 is the upward view in second embodiment of the invention after induction module and cover plate combination;
Fig. 4 is the upward view in third embodiment of the invention after induction module and cover plate combination;
Fig. 5 is the cut-open view of fourth embodiment of the invention touch-screen module.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Touch-screen module of the present invention comprises the cover plate, induction module and the framework that set gradually.Described cover plate is transparent cover plate, and can adopt the glass cover-plate that this area is conventional, described cover plate is arranged at above induction module; Described induction module is for generation of touch signal.For GFF touch-screen, described induction module comprises the first conductive film and the second conductive film, and described first conductive film and the second conductive film comprise base material respectively and be formed in the circuitous pattern (not shown) on base material; For GF formula touch-screen, described induction module is only layer of conductive film.Described framework is positioned at the below of cover plate and induction module, for carrying cover plate and induction module.The frame structure that described framework can adopt this area conventional, as comprised supporting part (not shown), supporting part comprises interconnective four frames, and described four frames surround rectangular hollow bulb.The one side of described framework is used for fixing and carries cover plate and induction module, and another side can be used for immobile liquid crystal display, thus touch-screen module and liquid crystal display is combined into one.
Induction module of the present invention has first surface and second surface, is bonded together between described cover plate and the first surface of induction module by the first colloid layer, and described first colloid layer is solid state optics colloid layer, as the OCA optical cement that this area is conventional.The second surface of described induction module and framework bond.The periphery of described induction module is provided with at least one peristome, and described peristome runs through described first surface and second surface, and after the first surface of induction module and cover plate fit together, corresponding a part of cover plate is exposed at peristome place.A part of cover plate that peristome is corresponding is not provided with the first colloid layer.Be provided with the second colloid layer between induction module and framework, described second colloid layer is positioned on the induction module second surface periphery corresponding with framework, and cover plate and framework are bonded together by described peristome by the second colloid layer simultaneously.
As shown in Figure 1, in the first embodiment of the present invention, touch-screen module comprises cover plate 10, induction module 20 and framework 30, and described cover plate 10 and induction module 20 are successively set in framework 30.Described induction module 20 comprises the first conductive film 21 and the second conductive film 22, is bonded together between described first conductive film 21 and the second conductive film 22 by solid state optics glue-line 42.Described cover plate 10 is bonded together by solid state optics glue-line 41 with induction module 20.Described solid state optics glue-line 41,42 is OCA optical cement.Be bonded together by hot melt adhesive layer 43 between described induction module 20 and framework 30, induction module 20 periphery also has peristome, and described hot melt adhesive 43 is filled into described peristome and cover plate 10 and framework 30 is bonded together.
Fig. 2 be in first embodiment of the invention induction module 20 and cover plate 10 combine after upward view, on induction module, surrounding is provided with peristome 23, and described peristome 23 is four, and four peristomes 23 lay respectively at the corner place of rectangle induction module.Hot melt adhesive layer 43(is not shown) be coated on induction module 20 periphery corresponding with framework, and be filled in four peristomes 23 simultaneously.Thus, after combining with framework 30, induction module 20 and framework 30 are bonded together by the hot melt adhesive layer being coated in induction module 20 periphery, and cover plate 10 and framework 30 are bonded together by the hot melt adhesive be filled in peristome 23.
The present invention is by arranging peristome 23 in the periphery of induction module 20, after induction module 20 and cover plate 10 and framework 30 are combined, by the hot melt adhesive layer being filled into peristome 23, cover plate 10 and framework 30 are directly bonded together, decrease the contact area of hot melt adhesive layer and induction module, thus decrease that hot melt adhesive layer in falling process produces induction module pull power; The hot melt adhesive be filled in four peristomes 23 directly bonds cover plate 10 and framework 30, as four columns, the major part that assume responsibility in falling process pulls power, make whole touch-screen module be a firmly entirety, can not cause between the first conductive film 21 and the second conductive film 22 because of the cohesive force of OCA optical cement layer 41,42 is less than the cohesive force of hot melt adhesive layer 43 and occurs lamination between induction module 20 and cover plate 10.The hot melt adhesive be simultaneously filled in four peristomes 23 also greatly strengthen the fastness of whole touch-screen module, makes touch-screen cover plate 10 when falling not easily broken.
Fig. 3 be in second embodiment of the invention induction module 20 and cover plate 10 combine after upward view, be two with embodiment one unlike described peristome 23, be opened in the diagonal position of induction module 20 respectively, corresponding cover plate 10 is exposed at described peristome 23 place.The peristome 23 of inventive touch screen module can be also one or three, and should be understood that the larger consolidation effect to whole touch-screen of the area of described peristome is better, peristome 23 is preferably four and lays respectively at the corner place of induction module.Those skilled in the art can be selected by actual needs.
Fig. 4 be in third embodiment of the invention induction module 20 and cover plate 10 combine after upward view, as shown in the figure, described peristome 23 is not only positioned at the corner place of induction module 20, also comprises above back shroud 10 periphery that to be fitted in when induction module 20 on cover plate 10 that other do not cover the part of induction module 20.Increase the area of peristome 23, that is to say the area increasing cover plate 10 and contacted by hot melt adhesive 43 with framework 30, make the structure of whole touch-screen module more firm.Decreasing hot melt adhesive layer 43 and the contact area of the second conductive film 22 in induction module 20 simultaneously, more not easily occurring the lamination between the first conductive film 21 and the second conductive film 22 when falling.Now because cover plate 10 and the first conductive film 21 in induction module 20 do not bond by means of only OCA optical cement layer 41, and bondd by hot melt adhesive layer 43, make also not easily to occur lamination between cover plate 10 and the first conductive film 21.Whole touch-screen modular structure is reinforced simultaneously, and when falling, cover plate 10 is also not easily chipping.
Conductive film of the present invention comprises base material and is formed in the circuitous pattern for generation of capacitance change signal on base material, those of ordinary skill in the art should know, touch-screen module of the present invention also comprises the contact conductor (not shown) that to be connected with circuitous pattern, the contact conductor that described contact conductor can adopt this area conventional, as printing nano-silver thread.Described circuitous pattern comprises many transparent electrode lines (not shown)s, described contact conductor is arranged on the circumferential position of conductive film and is connected with every bar transparent electrode lines, contact conductor for driving every bar transparent electrode lines, and derives capacitance change signal after touch occurs.Described touch-screen module also comprises flexible print circuit board (not shown), described flexible print circuit board is connected with contact conductor, for capacitance change signal being passed to the controller of the mobile terminals such as mobile phone, controller can calculate the touch location on touch-screen after obtaining corresponding capacitance variable signal, thus performs corresponding operation.Foregoing circuit figure and contact conductor together constitute the functional areas of induction module 20, should be understood that, described peristome 23 is opened in the position on induction module periphery except functional areas.
Fig. 5 is the cut-open view of fourth embodiment of the invention, with embodiment one to three unlike, in the present embodiment, induction module 20 ＇ is only layer of conductive film 21, and described conductive film 21 comprises base material equally and is formed in circuitous pattern on base material.The touch-screen module of the present embodiment comprises the contact conductor be connected with circuitous pattern and the flexible print circuit board be connected with contact conductor too.Described circuitous pattern and contact conductor constitute the functional areas of induction module.Described induction module 20 ＇ is between cover plate 10 and framework 30, and cover plate 10 is connected with induction module 20 ＇ by OCA optical cement layer.Non-functional area in induction module 20 ＇ surrounding is provided with peristome 23, and after cover plate 10 and induction module 20 ＇ fit, corresponding cover plate 10 is exposed in the position of peristome 23.On described induction module 20 ＇ periphery, on the position corresponding with framework 30 and cover plate 10, the position corresponding with peristome 23 is coated with hot melt adhesive 43, induction module 20 ＇ and framework 30 are bonded together with the hot melt adhesive of framework 30 corresponding position by induction module 20 ＇ periphery, cover plate 10 and framework 30 are bonded together with the hot melt adhesive of peristome 23 corresponding position by cover plate 10.The present embodiment by arranging peristome on induction module 20 ＇, and hot melt adhesive is filled in peristome, serve the effect of reinforcing whole touch-screen module equally, making whole touch-screen module not easily occur lamination between induction module 20 ＇ and cover plate 10 in falling process, not easily there is cracked phenomenon in cover plate 10.The number in the present embodiment split shed portion 23 can be identical with embodiment one to three with shape, and those skilled in the art can select voluntarily.
Present invention also offers a kind of preparation method of touch-screen module, specifically comprise the following steps:
S1: prepare cover plate, induction module and framework;
S2: the periphery of induction module is punched out at least one peristome, and the first surface of the induction module after die-cut is bonded together by the first colloid layer and cover plate;
S3: apply the second colloid layer on the periphery of induction module second surface and cover plate corresponding to peristome;
S4: the assembly of induction module and cover plate is bonded together by the second colloid layer and framework.
The clear glass cover plate that cover plate described in step S1 can be commonly used for this area, described framework can adopt plastic material to be formed by Shooting Technique, and the preparation method of described clear glass cover plate and plastic frame body is general knowledge known in this field, repeats no more herein.As one embodiment of the present of invention, described induction module comprises the first conductive film, the second conductive film and by the OCA optical cement layer of the first conductive film together with the second conductive film adhering, be general knowledge known in this field by OCA optical cement layer by the method for the first conductive film together with the second conductive film adhering, repeat no more herein.The circuitous pattern that described first conductive film and the second conductive film comprise base material respectively and be formed on base material, described base material is made up of transparent insulation material, as the PET film that this area is conventional; Described circuitous pattern can adopt the conventional material in this area to make, as ITO(tin indium oxide) or nano-silver thread.The method that described circuitous pattern is formed on base material is known to the skilled person, as can adopt laminating, deposition mode in the one side of base material, form conductive layer, then produce circuitous pattern on the electrically conductive, circuitous pattern can be formed by the mode of conventional exposure, development and etching.Described induction module also comprises the contact conductor be connected with circuitous pattern and the flexible print circuit board be connected with contact conductor, and described contact conductor and the capacitance change signal in being produced by the circuitous pattern of induction module used for flexible printed circuit board pass to the controller of the mobile terminals such as mobile phone.The nano-silver thread that contact conductor can adopt this area conventional, the method for described formation contact conductor and flexible print circuit board is known to the skilled person, and repeats no more herein.As an alternative embodiment of the invention, described induction module also only can comprise layer of conductive film, and described conductive film can adopt said method to prepare, and repeats no more herein.
Punch out peristome by the induction module periphery non-functional area prepared in step S1, those skilled in the art can adopt conventional clicking technique.Described peristome is preferably four, lays respectively at the corner place of rectangle induction module, and as different embodiments of the invention, those skilled in the art can select different peristome numbers and peristome shape according to actual conditions.
In step S2, described first colloid layer is the OCA optical cement layer that this area is commonly used, described induction module has first surface and second surface, the technique that the first surface of induction module and cover plate fit together is known to the skilled person, repeats no more herein by OCA optical cement layer.
In step S3, the second colloid layer is coated on induction module periphery and cover plate corresponding to peristome by the mode of some glue.Concrete technology be the induction module fit together and cover plate to be placed on fixture fixing, then by point gum machine coating hot-melt adhesive on the periphery of induction module and cover plate corresponding to peristome.
Finally combining being coated with the induction module of hot melt adhesive and cover plate combination body and framework, the assembly of induction module and cover plate being bondd by hot melt adhesive layer and framework, has namely obtained touch-screen module of the present invention.
Touch-screen module preparation technology of the present invention, by processing peristome in induction module, and on the periphery of induction module and framework surface of contact and cover plate corresponding to peristome coating hot-melt adhesive, induction module and framework and cover plate and framework are bonded together with hot melt adhesive simultaneously, make whole touch-screen modular structure more firm, solve and when touch-screen falls, easily to occur layering or the cracked problem of cover plate, and preparation technology is simple, production efficiency is high, is adapted at applying in large-scale production.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all do within characteristic sum principle of the present invention any amendment, equivalent to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a touch-screen module, it is characterized in that, described touch-screen module comprises the cover plate, induction module and the framework for carrying cover plate and induction module that set gradually, the first colloid layer is provided with between described cover plate and induction module, the second colloid layer is provided with between described induction module and framework, the periphery of described induction module has at least one peristome, described second colloid layer be filled in described peristome and by cover plate and framework bonding.
2. touch-screen module according to claim 1, is characterized in that, described induction module is rectangle, and described peristome is located at the corner of induction module.
3. touch-screen module according to claim 1, is characterized in that, described peristome is two, is opened in the diagonal position of induction module respectively.
4. the touch-screen module according to claim 1-3 any one, is characterized in that, the area of described cover plate is greater than the area of described induction module, and the periphery that described peristome comprises cover plate does not cover the part of induction module.
5. touch-screen module according to claim 1, is characterized in that, described cover plate is glass cover-plate, and described framework is plastic frame body.
6. touch-screen module according to claim 1, is characterized in that, described first colloid layer is solid state optics glue-line.
7. touch-screen module according to claim 1, is characterized in that, described second colloid layer is hot melt adhesive layer.
8. touch-screen module as claimed in any of claims 1 to 3, is characterized in that, described induction module comprises the first conductive film and the second conductive film, is provided with the 3rd colloid layer between described first conductive film and the second conductive film.
9. touch-screen module according to claim 8, is characterized in that, described first conductive film and the second conducting film comprise base material respectively and be formed in the circuitous pattern on base material.
10. touch-screen module according to claim 9, is characterized in that, described 3rd colloid layer is solid state optics glue-line.
11. touch-screen modules as claimed in any of claims 1 to 3, it is characterized in that, described induction module comprises layer of conductive film, and described conductive film comprises base material and is formed in the conducting wire on base material.
The preparation method of 12. 1 kinds of touch-screen modules, is characterized in that, comprises the following steps:
S1: prepare cover plate, induction module and framework;
S2: the periphery of induction module is punched out at least one peristome, and the first surface of the induction module after die-cut is bonded together by the first colloid layer and cover plate;
S3: apply the second colloid layer on the periphery of induction module second surface and cover plate corresponding to peristome;
S4: the assembly of induction module and cover plate is bonded together by the second colloid layer and framework.
The preparation method of 13. touch-screen modules according to claim 12, is characterized in that, the described first surface at induction module and second surface are rectangle, punches out four peristomes in step S2 at the corner place of first surface and second surface.
The preparation method of 14. touch-screen modules according to claim 12, is characterized in that, in described step S3, the second colloid layer is coated on induction module periphery and cover plate corresponding to peristome by the mode of some glue.
The preparation method of 15. touch-screen modules according to claim 12, it is characterized in that, described first colloid layer is solid state optics colloid layer, described second colloid layer is hot melt adhesive layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410124750.XA CN104965612B (en) | 2014-03-31 | 2014-03-31 | A kind of touch screen mould group and preparation method thereof |
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| CN201410124750.XA CN104965612B (en) | 2014-03-31 | 2014-03-31 | A kind of touch screen mould group and preparation method thereof |
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| CN104965612A true CN104965612A (en) | 2015-10-07 |
| CN104965612B CN104965612B (en) | 2018-11-20 |
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| CN104965612B (en) | 2018-11-20 |
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