CN105786264A - Touch screen, manufacturing method thereof and touch device - Google Patents
Touch screen, manufacturing method thereof and touch device Download PDFInfo
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- CN105786264A CN105786264A CN201610342077.6A CN201610342077A CN105786264A CN 105786264 A CN105786264 A CN 105786264A CN 201610342077 A CN201610342077 A CN 201610342077A CN 105786264 A CN105786264 A CN 105786264A
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- touch screen
- anisotropic conductive
- adhesive layer
- conductive adhesive
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention discloses a touch screen, a manufacturing method thereof and a touch device. The manufacturing method is used for reducing the times of yellow light processing of the touch screen and reducing the manufacturing cost of the touch screen. The touch screen comprises a display area and a frame area, wherein the frame area of the touch screen comprises a touch control electrode connecting part, an anisotropic conductive adhesive layer and a flexible circuit board; the touch control electrode connecting part is located on a substrate base plate; the anisotropic conductive adhesive layer is located above the touch control electrode connecting part; the flexible circuit board is located above the anisotropic conductive adhesive layer; the anisotropic conductive adhesive layer is electrically connected with the touch control electrode connecting part and the flexible circuit board.
Description
Technical field
The present invention relates to technical field of touch control, particularly relate to a kind of touch screen and preparation method thereof, touching device.
Background technology
OGS touch screen (OneGlassSolution) is the electronic product sealer made under a kind of technology directly forming tin indium oxide (ITO) conducting film and sensor on protection glass.One block of glass simultaneously works as the dual function of protection glass and touch sensor.OGS touch screen has the advantages such as simple in construction, light, thin, good, the multiple point touching of light transmission relative to other capacitive touch screens, is widely used in field of human-computer interaction.
nullSpecifically，Touch screen structure of the prior art，Shown in Figure 1，Including viewing area A and frame region A1，Wherein，The structure of touch screen includes the black matrix 12 being positioned on underlay substrate 11，Wherein black matrix is positioned at frame region，It is positioned at the transparency conducting layer 13 in black matrix 12，Transparency conducting layer 13 covers viewing area and frame region，And transparency conducting layer 13 is as touch control electrode，Including the multiple interconnective touch-control drive electrode arranged in the first direction，The touch-control sensing electrode (not shown in FIG.) of the multiple mutually insulateds arranged in a second direction，It is positioned at the first insulating barrier 14 above the transparency conducting layer 13 of viewing area，It is positioned at above described first insulating barrier 14 and is positioned at the metal level 15 above the transparency conducting layer of frame region，The metal level 15 of viewing area is for connecting the touch-control sensing electrode (not shown in FIG.) of each multiple mutually insulateds extended in a second direction，The metal level 15 of frame region is used for being electrically connected transparency conducting layer 13 and flexible PCB 17，The metal layer of frame region also includes the second insulating barrier 16，Wherein the second insulating barrier 16 includes via 18，Via 18 is used for connecting metal level 15 and flexible PCB 17.The formation of the every Rotating fields of touch screen as shown in Figure 1 all needs a gold-tinted processing procedure, and therefore, touch screen as shown in Figure 1 needs to adopt 5 gold-tinted processing procedures just can complete.And owing to the metal level in touch screen has the shortcoming that reflectance is high, visually easily visible.
Therefore, touch screen as shown in Figure 2 is obtained after touch screen as shown in Figure 1 being improved.nullTouch screen shown in Figure 2，Including viewing area A and frame region A1，The structure of touch screen includes the black matrix 12 being positioned on underlay substrate 11，Wherein black matrix is positioned at frame region，It is positioned at the first transparency conducting layer 23 in black matrix 12，First transparency conducting layer 23 covers viewing area and frame region，And first transparency conducting layer 23 as touch control electrode，Including the multiple interconnective touch-control drive electrode (not shown in FIG.) arranged in the first direction，The touch-control sensing electrode (not shown in FIG.) of the multiple mutually insulateds arranged in a second direction，It is positioned at the first insulating barrier 14 above the first transparency conducting layer 23 of viewing area，It is positioned at the second transparency conducting layer 24 above the first insulating barrier 14，Second transparency conducting layer 24 is for connecting the touch-control sensing electrode of each multiple mutually insulateds extended in a second direction，Touch screen also includes the metal level 15 being positioned at above the first transparency conducting layer of frame region，The metal level 15 of frame region is used for being electrically connected the first transparency conducting layer 23 and flexible PCB 17，The metal layer of frame region also includes the second insulating barrier 16，Wherein the second insulating barrier 16 includes via 18，Via 18 is used for connecting metal level 15 and flexible PCB 17.The formation of the every Rotating fields of touch screen as shown in Figure 2 all needs a gold-tinted processing procedure, and therefore, touch screen as shown in Figure 2 needs to adopt 6 gold-tinted processing procedures just can complete.But the metal level in customer service touch screen has a shortcoming that reflectance is high, visually easily visible.
Shown in sum up, the frame region of touch screen of the prior art all adopts metal level to realize the electric connection of touch control electrode and flexible PCB, at least needs the twice gold-tinted processing procedure adopted to realize, thus adding the cost of manufacture of touch screen.
Summary of the invention
The invention provides a kind of touch screen and preparation method thereof, touching device, in order to reduce the number of times of the gold-tinted processing procedure of touch screen, and reduce the cost of manufacture of touch screen.
Embodiments providing a kind of touch screen, including viewing area and frame region, the frame region of described touch screen includes:
It is positioned at the touch control electrode connecting portion on underlay substrate；
It is positioned at the anisotropic conductive adhesive layer above described touch control electrode connecting portion；
And it is positioned at the flexible PCB above described anisotropic conductive adhesive layer, wherein, described anisotropic conductive adhesive layer is used for being electrically connected described touch control electrode connecting portion and described flexible PCB.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, the frame region of described touch screen also includes the black matrix between described underlay substrate and described touch control electrode connecting portion；
The projection on described underlay substrate of the described anisotropic conductive adhesive layer is positioned at the region of described black matrix projection on described underlay substrate.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, the width of described black matrix is more than or equal to the width of described anisotropic conductive adhesive layer.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, the projection on described underlay substrate of the described flexible PCB is positioned at the region of described black matrix projection on described underlay substrate.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, the viewing area of described touch screen also includes the touch control electrode being electrical connected with described touch control electrode connecting portion；
Described touch control electrode includes the touch-control drive electrode extended in a first direction and the touch-control sensing electrode extended in a second direction, described touch-control drive electrode and described touch-control sensing electrode mutually insulated.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, described flexible PCB includes the first flexible PCB and the second flexible PCB；
Described touch-control drive electrode and described first flexible PCB are electrical connected by described anisotropic conductive adhesive layer；Described touch-control sensing electrode and described second flexible PCB are electrical connected by described anisotropic conductive adhesive layer.
In a kind of possible embodiment, in the above-mentioned touch screen that the embodiment of the present invention provides, the width of described anisotropic conductive adhesive layer is 0.6mm-1.5mm.
Correspondingly, the embodiment of the present invention additionally provides a kind of touching device, including the touch screen of any of the above-described kind that the embodiment of the present invention provides.
Correspondingly, the embodiment of the present invention additionally provides the manufacture method of the touch screen that a kind of embodiment of the present invention provides, and the method includes:
Described underlay substrate is formed the figure of described touch control electrode connecting portion；
It is formed over described anisotropic conductive adhesive layer at described touch control electrode connecting portion；
Described anisotropic conductive adhesive layer is carried out cured so that described anisotropic conductive adhesive layer has electric conductivity, and is electrically connected described touch control electrode connecting portion and described flexible PCB.
In a kind of possible embodiment, in the manufacture method of the above-mentioned touch screen that the embodiment of the present invention provides, described anisotropic conductive adhesive layer is carried out cured, including:
Described anisotropic conductive adhesive layer is solidified by the technique adopting hot pressing.
The present invention has the beneficial effect that:
Embodiments providing a kind of touch screen and preparation method thereof, touching device, described touch screen includes viewing area and frame region, and the frame region of described touch screen includes, and is positioned at the touch control electrode connecting portion on underlay substrate；It is positioned at the anisotropic conductive adhesive layer above touch control electrode connecting portion；And it is positioned at the flexible PCB above anisotropic conductive adhesive layer, wherein, anisotropic conductive adhesive layer is used for being electrically connected described touch control electrode connecting portion and described flexible PCB.Therefore compared in prior art, by metal level and be positioned at metal layer insulating barrier and realize being electrical connected of touch control electrode connecting portion and flexible PCB, by adopting anisotropic conductive adhesive layer to connect touch control electrode connecting portion and flexible PCB in the present invention, thus saving the technique of twice gold-tinted processing procedure, and reduce the cost of touch screen.
Accompanying drawing explanation
The structural representation of a kind of touch screen that Fig. 1 provides for prior art；
The structural representation of the second touch screen that Fig. 2 provides for prior art；
The structural representation of a kind of touch screen that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the second touch screen that Fig. 4 provides for the embodiment of the present invention；
The structural representation of the third touch screen that Fig. 5 provides for the embodiment of the present invention；
The front view of a kind of touch screen that Fig. 6 provides for the embodiment of the present invention；
The schematic flow sheet of the manufacture method of a kind of touch screen that Fig. 7 provides for the embodiment of the present invention；
The structural representation that the manufacture method of a kind of touch screen that Fig. 8 (a)-Fig. 8 (f) provides for the embodiment of the present invention obtains after performing each step；
The front view of the second touch screen that Fig. 9 provides for the embodiment of the present invention.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of touch screen that the embodiment of the present invention provides and preparation method thereof, touching device, in order to reduce the number of times of the gold-tinted processing procedure of touch screen, and reduce the cost of manufacture of touch screen.
Below in conjunction with accompanying drawing, the detailed description of the invention of touch screen that the embodiment of the present invention provides and preparation method thereof, touching device is described in detail.
A kind of touch screen that the embodiment of the present invention provides, including viewing area and frame region.As it is shown on figure 3, the frame region A1 of touch screen includes: be positioned at the touch control electrode connecting portion 41 on underlay substrate 11；It is positioned at the anisotropic conductive adhesive layer 42 above touch control electrode connecting portion 41；And it being positioned at the flexible PCB 17 of anisotropic conductive adhesive layer 42, anisotropic conductive adhesive layer 42 is used for being electrically connected touch control electrode connecting portion 41 and flexible PCB 17.
It should be noted that the touch control electrode connecting portion in the embodiment of the present invention is connected with the touch control electrode of viewing area in touch screen, specifically, the structure of the touch control electrode of viewing area is not especially limited at this.It is preferred that touch control electrode connecting portion is transparency conducting layer, such as tin indium oxide etc..
Wherein, due to the technique that the making of anisotropic conductive adhesive layer need not adopt gold-tinted processing procedure, make relatively simple, only need anisotropic conductive adhesive layer is being solidified or just having electric conductivity after drying, and anisotropic conductive does not have the problem being corroded, compared to prior art makes metal level between touch-control connecting portion and flexible PCB, and the insulating barrier made in order to avoid metal level is corroded, the embodiment of the present invention adopts anisotropic conductive adhesive layer to connect touch control electrode connecting portion and flexible PCB, not only simplify the Making programme of touch screen, and decrease the cost of manufacture of touch screen.Wherein, flexible PCB is for providing signal to touch control electrode, and receives the signal of touch control electrode feedback.
Specifically, anisotropy anisotropic conductive adhesive layer (the AnisotropicConductiveFilm that the embodiment of the present invention provides, ACF) it is made up of conducting resinl, conducting resinl is a kind of adhesive solidifying or having after drying certain electric conductivity, conducting resinl is before solidifying or be dry, conducting particles is separate to exist in adhesive, does not contact continuously each other, is therefore at state of insulation.Conducting resinl solidifies or dried, causes the contraction of adhesive volume due to the volatilization of solvent and the solidification of adhesive, makes conducting particles each other in stable continuous state, thus shows electric conductivity.The embodiment of the present invention adopt anisotropic conductive form anisotropic conductive adhesive layer, the solidification realizing anisotropic conductive under high temperature action is made to have electric conductivity, and only turn on the direction of flexible PCB and touch control electrode connecting portion, thus realize being electrically connected the effect of touch control electrode connecting portion and flexible PCB.Specifically, the width of anisotropic conductive is less, such that it is able to reduce the width of black matrix further, it is achieved the purpose of narrow frame design.
The touch screen that the embodiment of the present invention provides, including viewing area and frame region, the frame region of touch screen includes, and is positioned at the touch control electrode connecting portion on underlay substrate；It is positioned at the anisotropic conductive adhesive layer above touch control electrode connecting portion；And it is positioned at the flexible PCB above anisotropic conductive adhesive layer, wherein, anisotropic conductive adhesive layer is used for being electrically connected touch control electrode connecting portion and flexible PCB.Therefore compared in prior art, the frame region of touch screen requires over metal level and is positioned at metal layer insulating barrier to realize being electrical connected of touch control electrode connecting portion and flexible PCB, by adopting anisotropic conductive adhesive layer to connect touch control electrode connecting portion and flexible PCB in the present invention, thus saving the metal level made in touch screen and the technique of this twice gold-tinted processing procedure of insulating barrier being positioned at metal layer, and reduce the cost of touch screen.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, in order to avoid anisotropic conductive adhesive layer increases the width of frame region, referring to Fig. 4, the frame region of touch screen also includes the black matrix 43 between underlay substrate 11 and touch control electrode connecting portion 41；The anisotropic conductive adhesive layer 42 projection on underlay substrate 11 is positioned at the region of the black matrix 43 projection on underlay substrate 11.Specifically, anisotropic conductive adhesive layer at the width of frame region less than the width of black matrix.Usually, it is only small that the width of anisotropic conductive adhesive layer can do, compared to metal level of the prior art, the anisotropic conductive adhesive layer narrower width that the embodiment of the present invention provides, correspondingly, the width of black matrix is less times greater than the width of anisotropic conductive adhesive layer, and ratio black matrix narrower width of the prior art, thus reducing the frame region of touch screen, it is achieved that the narrow frame design of touch screen.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, referring to Fig. 4, the flexible PCB 17 projection on underlay substrate 11 is positioned at the region of the black matrix 43 projection on underlay substrate 11.Specifically, the effect of black matrix is to block anisotropic conductive adhesive layer and flexible PCB, and therefore, flexible PCB projection on underlay substrate is positioned at the black matrix view field at underlay substrate.After flexible PCB is electrical connected by anisotropic conductive adhesive layer and touch control electrode, it is possible to unnecessary flexible PCB is folded so that flexible PCB projection on underlay substrate is respectively positioned in the region of black matrix projection on underlay substrate.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, also include the touch control electrode 44 being electrical connected with touch control electrode connecting portion 41 referring to Fig. 5, the viewing area A of touch screen；Specifically, the front view of touch screen shown in Figure 6, touch control electrode in the viewing area A of touch screen includes the touch-control drive electrode 441 extended in a first direction and the touch-control sensing electrode 442 extended in a second direction, touch-control drive electrode 441 and touch-control sensing electrode 442 mutually insulated.Specifically, the material of touch control electrode connecting portion and the material of touch control electrode are identical, for instance adopt the materials such as transparent burning, nitrogen oxides, it is preferred that, adopt indium tin oxide material to make touch control electrode connecting portion and touch control electrode.
Wherein, first direction can be laterally, and second direction is longitudinally；Or, first direction can be longitudinally, and second direction is laterally.Only extending in transverse direction with touch-control drive electrode in Fig. 6, touch-control sensing electrode extends to example along the longitudinal direction and illustrates, but not only represents touch electrode structure as shown in Figure 6.Wherein, touch-control drive electrode and touch-control sensing electrode are arranged with layer, and touch-control drive electrode and touch-control sensing electrode are electrical connected by different Rotating fields respectively at bridge contact, and the structure of concrete bridge contact is described in detail below again, does not repeat herein.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, referring to Fig. 6, flexible PCB includes the first flexible PCB 171 and the second flexible PCB 172；Touch-control drive electrode 441 and the first flexible PCB 171 are electrical connected by anisotropic conductive adhesive layer；Touch-control sensing electrode 442 and the second flexible PCB 172 are electrical connected by anisotropic conductive adhesive layer.Wherein, first flexible PCB and the second flexible PCB are positioned at the frame region of touch screen, first flexible PCB is connected with the touch-control drive electrode extended transversely, first flexible PCB is arranged in frame region left frame or left frame, second flexible PCB is connected with the touch-control sensing electrode extended longitudinally, and the second flexible PCB is arranged in upper side frame or the lower frame of frame region.
It should be noted that, touch-control drive electrode 441 is connected with the touch control electrode connecting portion 41 of frame region, and be electrical connected by conducting resinl and the first flexible PCB, Fig. 6 is not drawn into anisotropic conductive adhesive layer, because anisotropic conductive adhesive layer is covered by the soft circuit board of the first flexible PCB and second.Touch-control sensing electrode 442 is connected with the touch control electrode connecting portion 41 of frame region, and conducting resinl and the second flexible PCB are electrical connected.Wherein, touch control electrode connecting portion can make with touch-control drive electrode and touch-control sensing electrode simultaneously, or timesharing makes, and is not specifically limited at this.
It is preferred that in the above-mentioned touch screen of embodiment of the present invention offer, the width of anisotropic conductive adhesive layer is 0.6mm-1.5mm.Specifically, the width of anisotropic conductive adhesive layer is 0.6mm-1.5mm so that the width of black matrix can less times greater than or equal to the width of anisotropic conductive adhesive layer.Therefore, when making black matrix, being the width of 1.5mm-2mm compared to the width of black matrix in prior art, the black matrix in the embodiment of the present invention is narrower, it is achieved thereby that the design of narrow frame.
Based on same invention thought, referring to Fig. 7, the embodiment of the present invention additionally provides the manufacture method of a kind of touch screen, and the method includes:
S701, on underlay substrate formed touch control electrode connecting portion figure；
Wherein, the formation of touch control electrode connecting portion can concurrently form with the touch control electrode of viewing area, it is also possible to the touch control electrode timesharing with viewing area is formed, and is not specifically limited at this.Adopt the figure of a gold-tinted making technology formation touch control electrode connecting portion.
S702, it is formed over anisotropic conductive adhesive layer at touch control electrode connecting portion；
Wherein, the anisotropic conductive adhesive layer being formed at touch control electrode connecting portion need not adopt gold-tinted making technology, only with simple coating method.Therefore, making metal level and insulating barrier twice gold-tinted making technology are eliminated.
S703, anisotropic conductive adhesive layer is carried out cured so that anisotropic conductive adhesive layer has electric conductivity, and is electrically connected touch control electrode connecting portion and flexible PCB.
Anisotropic conductive adhesive layer, before not carrying out cured, does not have electric conductivity, therefore to make anisotropic conductive adhesive layer have electric conductivity, it is necessary to it is carried out cured.
It is preferred that in the manufacture method of the above-mentioned touch screen of embodiment of the present invention offer, anisotropic conductive adhesive layer is carried out cured by step S703, including: adopt the technique of hot pressing that anisotropic conductive adhesive layer is solidified.Wherein, having multiple to the mode of the cured of anisotropic conductive adhesive layer, the cured for anisotropic conductive can adopt the mode of hot pressing to make anisotropy anisotropic conductive adhesive layer have electric conductivity.It addition, the anisotropic conductive adhesive layer for unlike material can adopt different cured modes to process, do not repeat at this.
It should be noted that gold-tinted processing procedure includes four steps, gluing, exposure, development and detection.Specifically, in above-mentioned steps, the gold-tinted making technology being formed by of each figure can include photoetching process, or, it is possible to include photoetching process and etch step, other techniques for forming predetermined pattern such as printing, ink-jet can also be included simultaneously；Photoetching process refers to the technique utilizing photoresist, mask plate, exposure machine etc. to form pattern of the technical processs such as film forming, exposure, development.In the specific implementation, can according to the corresponding patterning processes of the structure choice formed in the present invention.
In order to further describe the manufacturing process of the touch screen that the embodiment of the present invention provides, it is described in detail for the manufacturing process of whole touch screen below.
Step one, underlay substrate frame region formed black matrix 43 figure, such as Fig. 8 (a)；
Wherein frame region only carries out, for viewing area frame, description of drawing, and other frame region are all identical.
Step 2, form the figure of touch control electrode 44 in the viewing area of underlay substrate, be simultaneously formed over, in black matrix, the touch control electrode connecting portion 41 that the touch control electrode with viewing area is electrical connected, such as Fig. 8 (b)；
Wherein, touch control electrode includes touch-control drive electrode and touch-control sensing electrode, and the front view of touch control electrode is as shown in Figure 6.
Step 3, touch control electrode 44 bridge contact part formed insulating barrier 45 figure, such as Fig. 8 (c)；
Wherein, insulating barrier is transparent insulating layer, as OC transparent insulating layer, thus avoiding reducing the aperture opening ratio of viewing area.
Step 4, it is formed over transparency conducting layer 46 at insulating barrier 45, such as Fig. 8 (d)；
Wherein transparency conducting layer can be identical with the material of touch control electrode, it is also possible to different from the material of touch control electrode.Specifically, the material of transparency conducting layer can be oxide, nitride or fluoride etc..It is not specifically limited at this.
Step 5, it is formed over anisotropic conductive adhesive layer at the touch control electrode connecting portion 41 of frame region, such as Fig. 8 (e)；
Specifically, it is formed over anisotropic conductive film layer at the touch control electrode connecting portion being connected with above the touch control electrode connecting portion that touch-control drive electrode is connected with touch-control sensing electrode.
Step 6, the cured that anisotropic conductive adhesive layer 42 carried out by the mode of hot pressing, and flexible PCB 17 and touch control electrode connecting portion 41 are turned on, such as Fig. 8 (f).
Wherein, first flexible PCB 171 is turned on by touch control electrode connecting portion 41 and touch-control drive electrode 441, second flexible PCB 172 is turned on by touch control electrode connecting portion 41 and touch-control sensing electrode 441, and each row touch-control drive electrode is connected with each other, each column touch-control sensing electrode is connected with each other by the transparency conducting layer 46 above insulating barrier 45, shown in Figure 9.
In the manufacture method of the touch screen provided in the embodiment of the present invention, adopt the figure of the figure of gold-tinted making technology black matrix successively, the figure of touch control electrode, the figure of insulating barrier and transparency conducting layer, visible present invention only requires the making that gold-tinted making technology can complete touch screen four times, wherein, when being turned on by touch control electrode and flexible PCB, the mode adopting conducting resinl turns on, simplify technological process, and save the cost of manufacture of touch screen, simultaneously because the narrower width of conducting resinl, achieve again the narrow frame design of touch screen.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of touching device, including any of the above-described kind of touch screen that the embodiment of the present invention provides.This touching device can be: any product with touch function or the parts such as mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.The enforcement of this touching device may refer to the embodiment of above-mentioned touch screen, repeats part and repeats no more.
In sum, touch screen that the embodiment of the present invention provides and preparation method thereof, touching device, touch screen includes viewing area and frame region, and the frame region of touch screen includes, and is positioned at the touch control electrode connecting portion on underlay substrate；It is positioned at the anisotropic conductive adhesive layer above touch control electrode connecting portion；And it is positioned at the flexible PCB above anisotropic conductive adhesive layer, wherein, anisotropic conductive adhesive layer is used for being electrically connected touch control electrode connecting portion and flexible PCB.Therefore compared in prior art, the frame region of touch screen requires over metal level and is positioned at metal layer insulating barrier to realize being electrical connected of touch control electrode connecting portion and flexible PCB, by adopting anisotropic conductive adhesive layer to connect touch control electrode connecting portion and flexible PCB in the present invention, thus saving the metal level made in touch screen and the technique of this twice gold-tinted processing procedure of insulating barrier being positioned at metal layer, and reduce the cost of touch screen.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a touch screen, including viewing area and frame region, it is characterised in that the frame region of described touch screen includes:
It is positioned at the touch control electrode connecting portion on underlay substrate；
It is positioned at the anisotropic conductive adhesive layer above described touch control electrode connecting portion；
And it is positioned at the flexible PCB above described anisotropic conductive adhesive layer, wherein, described anisotropic conductive adhesive layer is used for being electrically connected described touch control electrode connecting portion and described flexible PCB.
2. touch screen according to claim 1, it is characterised in that the frame region of described touch screen also includes the black matrix between described underlay substrate and described touch control electrode connecting portion；
The projection on described underlay substrate of the described anisotropic conductive adhesive layer is positioned at the region of described black matrix projection on described underlay substrate.
3. touch screen according to claim 2, it is characterised in that the width of described black matrix is more than or equal to the width of described anisotropic conductive adhesive layer.
4. touch screen according to claim 2, it is characterised in that the projection on described underlay substrate of the described flexible PCB is positioned at the region of described black matrix projection on described underlay substrate.
5. touch screen according to claim 1, it is characterised in that the viewing area of described touch screen also includes the touch control electrode being electrical connected with described touch control electrode connecting portion；
Described touch control electrode includes the touch-control drive electrode extended in a first direction and the touch-control sensing electrode extended in a second direction, described touch-control drive electrode and described touch-control sensing electrode mutually insulated.
6. touch screen according to claim 5, it is characterised in that described flexible PCB includes the first flexible PCB and the second flexible PCB；
Described touch-control drive electrode and described first flexible PCB are electrical connected by described anisotropic conductive adhesive layer；Described touch-control sensing electrode and described second flexible PCB are electrical connected by described anisotropic conductive adhesive layer.
7. the touch screen according to claim 1,2,3 or 6, it is characterised in that the width of described anisotropic conductive adhesive layer is 0.6mm-1.5mm.
8. a touching device, it is characterised in that include the touch screen described in the arbitrary claim of claim 1-7.
9. the manufacture method of the touch screen described in a claim 1-7, it is characterised in that the method includes:
Described underlay substrate is formed the figure of described touch control electrode connecting portion；
It is formed over described anisotropic conductive adhesive layer at described touch control electrode connecting portion；
Described anisotropic conductive adhesive layer is carried out cured so that described anisotropic conductive adhesive layer has electric conductivity, and is electrically connected described touch control electrode connecting portion and described flexible PCB.
10. method according to claim 9, it is characterised in that described anisotropic conductive adhesive layer is carried out cured, including:
Described anisotropic conductive adhesive layer is solidified by the technique adopting hot pressing.
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| WO2018040713A1 (en) * | 2016-08-30 | 2018-03-08 | 京东方科技集团股份有限公司 | Touch control substrate and manufacturing method therefor, display apparatus, and fingerprint recognition apparatus and method |
| CN108984030A (en) * | 2018-07-04 | 2018-12-11 | 东莞市显触光电科技有限公司 | A kind of high-weatherability is used for the adhesive bonding method of touch screen top electrode and lower electrode |
| CN110119217A (en) * | 2018-02-05 | 2019-08-13 | 深圳莱宝高科技股份有限公司 | The touch screen and terminal device of tin indium oxide film layer structure |
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| CN110825253A (en) * | 2018-08-13 | 2020-02-21 | 南昌欧菲光科技有限公司 | Touch control assembly and touch display screen |
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