CN203930873U - Fingerprint Identification sensor, integrated package and electronic installation - Google Patents
Fingerprint Identification sensor, integrated package and electronic installation Download PDFInfo
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- CN203930873U CN203930873U CN201420364220.8U CN201420364220U CN203930873U CN 203930873 U CN203930873 U CN 203930873U CN 201420364220 U CN201420364220 U CN 201420364220U CN 203930873 U CN203930873 U CN 203930873U
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Abstract
The utility model relates to fingerprint Identification sensor, integrated package and electronic installation.The integrated package of a kind of touch sensor and fingerprint sensor comprises: the first flexible and transparent substrate; The first embossed layer, is formed in described the first flexible and transparent substrate, and described the first embossed layer surface is provided with a plurality of the first grooves and a plurality of the second groove; The first electrode layer, is arranged in described a plurality of the first groove; Fingerprint detection element and a plurality of leads being connected with described fingerprint detection element, be arranged in described a plurality of the second groove; The second flexible and transparent substrate, is arranged in the part of described the first embossed layer; The second embossed layer, is formed in described the second flexible and transparent substrate, and described the second embossed layer surface is provided with a plurality of the 3rd grooves; The second electrode lay, is arranged in described a plurality of the 3rd groove, and described the first electrode layer and described the second electrode lay are used for forming touch sensor.
Description
Technical field
The utility model relates to fingerprint Identification sensor, in particular to the integrated package of a kind of swiping formula (swipe) fingerprint Identification sensor, touch sensor and fingerprint sensor and comprise the electronic installation of this fingerprint Identification sensor or this integrated package.
Background technology
Some biological characteristic of human body (as finger print/palm print) is the unique feature of human body, and their complexity can be provided for the enough feature quantity of differentiating.
The recognition technologies such as finger print/palm print fingerprint are the most ripe and low-cost biometrics identification technologies at present.Fingerprint identification technology is used widely.We not only can see the figure of fingerprint identification technology in gate inhibition, attendance checking system, also have the application of more fingerprint recognition on market: as notebook computer, mobile phone, automobile, bank paying all can employing fingerprint identification technology.Particularly, along with the development of smart mobile phone, a large amount of demands relevant to fingerprint recognition will be there are, such as utilizing fingerprint recognition release mobile phone, protection privacy information, guaranteeing transaction security etc.
Sensor for fingerprint recognition comprises resistance sensor, optical sensor and capacitance type sensor etc.
Capacitance type fingerprint identification sensor is generally formed on monocrystalline silicon substrate, therefore exists splintering problem occurs when finger is firmly pressed.In order to solve silicon chip, receiving that user presses many times or improper pressing and flimsy problem, the existing certainly general silicon substrate that adopts the sapphire protection fingerprint sensor that hardness is higher.But sapphire cost is higher, cause whole fingerprint recognition system cost higher.Adopt the fingerprint sensor of silicon substrate generally by cmos semiconductor technique, to form, the method complex process, causes the capacitance type fingerprint identification sensor production cost based on silicon substrate expensive.
Manufacture fingerprint Identification sensor and need to for example on silicon substrate, form some sensing units at base material.If the lazy weight of sensing unit, the resolution of fingerprint recognition is low, and this will cause accurately carrying out fingerprint recognition or will need user repeatedly to input fingerprint and make user's experience sense poor.In addition, the base material area of fingerprint Identification sensor is relatively limited.The fingerprint sensor that forms high-resolution in limited area is also a technological challenge.
Some fingerprint recognition scheme, for example Apple scheme, also needs to increase a driving ring.This driving ring is used for providing electric field to point to user on the one hand, to prevent external electromagnetic field, fingerprint recognition is produced and is disturbed on the other hand for electromagnetic screen.This causes whole fingerprint recognition assembly complicated, increases cost.
Need a kind of scheme that forms sufficient amount sensing unit or further improve the resolution of fingerprint recognition on limited area base material.
In the disclosed above-mentioned information of described background technology part, only for strengthening the understanding to background of the present disclosure, so it can comprise the information not forming prior art known to persons of ordinary skill in the art.
Utility model content
The application discloses a kind of fingerprint Identification sensor and comprises the electronic installation of this fingerprint Identification sensor, can reduce costs, and can on limited area base material, form sufficient amount drive electrode to improve fingerprint recognition resolution.
Other characteristics of the present disclosure and advantage become the detailed description by below obviously, or the partly acquistion by practice of the present disclosure.
According to an aspect of the present disclosure, the integrated package of a kind of touch sensor and fingerprint sensor is provided, comprising: the first flexible and transparent substrate; The first embossed layer, is formed in described the first flexible and transparent substrate, and described the first embossed layer surface is provided with a plurality of the first grooves and a plurality of the second groove; The first electrode layer, is arranged in described a plurality of the first groove; Fingerprint detection element and a plurality of leads being connected with described fingerprint detection element, be arranged in described a plurality of the second groove; The second flexible and transparent substrate, is arranged in the part of described the first embossed layer; The second embossed layer, is formed in described the second flexible and transparent substrate, and described the second embossed layer surface is provided with a plurality of the 3rd grooves; The second electrode lay, is arranged in described a plurality of the 3rd groove, and described the first electrode layer and described the second electrode lay are used for forming touch sensor, and wherein said fingerprint detection element comprises: the first induction electrode; Many the first drive electrodes, described many first drive electrodes are arranged in parallel and are spaced apart from each other, and described many first drive electrodes are relative to define a plurality of the first detector gap at interval with described the first induction electrode respectively; The second induction electrode, is oppositely arranged and is positioned at the side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode; Many the second drive electrodes, described many second drive electrodes are arranged in parallel and are spaced apart from each other, described many second drive electrodes are relative to define a plurality of the second detector gap at interval with described the second induction electrode respectively, and described many second drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the second electrode accordingly.
According to some embodiment, pitch between pitch between adjacent the first drive electrode and adjacent the second drive electrode is equal to each other and within the scope of 50-60 μ m, the width of the width of the first drive electrode and the second drive electrode is equal to each other and within the scope of 20-45 μ m, and the size of the first detector gap and the second detector gap is equal to each other and within the scope of 20-40 μ m.
According to some embodiment, the first flexible and transparent substrate and described the second flexible and transparent substrate are PET film.
According to some embodiment, described the first embossed layer and described the second embossed layer are ultraviolet-curing resin, hot-setting adhesive, light binding or certainly dry glue.
According to some embodiment, described the first electrode layer, described the second electrode lay and/or described fingerprint detection element comprise conductive grid.
According to another aspect of the present disclosure, a kind of electronic installation is provided, comprise the integrated package as described in aforementioned any one.
According to some embodiment, electronic installation also comprises transparent cover plate, described transparent cover plate has end face, the bottom surface relative with end face and the side that connects end face and bottom surface, described transparent cover plate comprises viewing area and non-display area, described integrated package fits in described bottom surface by OCA, and bending and fit in the described non-display area of described side and described end face by OCA, wherein said fingerprint detection element is positioned on described end face, and described a plurality of leads extends to described bottom surface from described end face.
According to some embodiment, described the first flexible and transparent substrate is more close or further from described transparent cover plate than described the second flexible and transparent substrate.
According to some embodiment, electronic installation also comprises the protective seam that covers described fingerprint detection element.
According to another aspect of the present disclosure, a kind of fingerprint Identification sensor is provided, comprising: substrate; Be formed on suprabasil embossed layer, described embossed layer surface is provided with a plurality of grooves; And fingerprint detection element, be placed in described a plurality of groove; Wherein said fingerprint detection element comprises: the first induction electrode; Many the first drive electrodes, described many first drive electrodes are arranged in parallel and are spaced apart from each other, and described many first drive electrodes are relative to define a plurality of the first detector gap at interval with described the first induction electrode respectively; The second induction electrode, is oppositely arranged and is positioned at the side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode; Many the second drive electrodes, described many second drive electrodes are arranged side by side and are spaced apart from each other, described many second drive electrodes are relative to define a plurality of the second detector gap at interval with described the second induction electrode respectively, and described many second drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the second electrode accordingly.
According to some embodiment, pitch between pitch between adjacent the first drive electrode and adjacent the second drive electrode is equal to each other and within the scope of 50-60 μ m, the width of the width of the first drive electrode and the second drive electrode is equal to each other and within the scope of 20-45 μ m, and the size of the first detector gap and the second detector gap is equal to each other and within the scope of 20-40 μ m.
According to some embodiment, described fingerprint detection element also comprises the first reference electrode and the second reference electrode and many first illusory drive electrodes and many second illusory drive electrodes, described the first reference electrode is oppositely arranged and is positioned at a side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode, described the second reference electrode is oppositely arranged and is positioned at a side contrary with described many second drive electrodes of described the second induction electrode abreast with described the second induction electrode, described many first illusory drive electrodes are arranged in parallel and are electrically connected to each other, described many first illusory drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the first reference electrode accordingly, described many second illusory drive electrodes are arranged in parallel and are electrically connected to each other, described many second illusory drive electrodes and described many second drive electrodes are arranged on a side contrary with described the second induction electrode of described the second reference electrode accordingly.
According to some embodiment, described fingerprint detection element comprises metallic particles, Graphene, carbon nano-tube or conducting polymer composite.
According to some embodiment, described fingerprint detection element comprises conductive grid.
According to another aspect of the present disclosure, a kind of electronic installation is provided, comprise the fingerprint Identification sensor as described in aforementioned any one.
According to embodiments more of the present disclosure, by utilizing embossed layer to form electrode and lead-in wire in non-silicon base, can improve the reliability of sensor, and can in limited area, form at lower cost the fingerprint sensor of high-resolution.According to embodiments more of the present disclosure, the integrated package of a kind of touch sensor and fingerprint sensor is provided, can reduce costs, the component wear causing while avoiding forming, improves yield rate.
Accompanying drawing explanation
By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present disclosure and advantage will become more obvious.
Fig. 1 schematically shows the fundamental diagram of capacitance type fingerprint detecting element;
Fig. 2 schematically shows according to the structural drawing of the swiping formula fingerprint Identification sensor of the disclosure one example embodiment;
Fig. 3 schematically shows the cut-open view obtaining along the AA ' line of Fig. 1;
Fig. 4 schematically shows the cut-open view obtaining along the BB ' line of Fig. 1;
Fig. 5 schematically shows the conductive grid that can be used for fingerprint detection element;
Fig. 6 schematically shows according to the structural drawing of the swiping formula fingerprint Identification sensor of the disclosure one example embodiment;
Fig. 7 illustrates many wire fingerprint images that obtain when swiping moves above fingerprint Identification sensor when finger;
Fig. 8 illustrates the complete finger print image that many wire fingerprint patterns piece together;
Fig. 9 schematically shows according to the structural representation of the fingerprint detection element of the disclosure one example embodiment;
Figure 10 schematically shows according to the structural representation of the fingerprint detection element of the disclosure one example embodiment;
Figure 11 schematically shows according to the electronic installation of the disclosure one example embodiment;
Figure 12 schematically shows according to the integrated package of the touch sensor of disclosure example embodiment and fingerprint sensor; And
Figure 13 schematically shows according to the electronic installation of disclosure example embodiment, comprising the integrated package shown in Figure 12.
Embodiment
Referring now to accompanying drawing, example embodiment is more fully described.Yet example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, provide these embodiments to make the disclosure by comprehensive and complete, and the design of example embodiment is conveyed to those skilled in the art all sidedly.In the drawings, for clear, exaggerated the thickness of region and layer.Identical in the drawings Reference numeral represents same or similar part, thereby will omit their detailed description.
In addition, described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, thus provide many details to provide fully understanding embodiment of the present disclosure.Yet, one of skill in the art will appreciate that and can put into practice technical scheme of the present disclosure and there is no one or more in described specific detail, or can adopt other method, constituent element, material etc.In other cases, be not shown specifically or describe known configurations, material or operation to avoid fuzzy each side of the present disclosure.
The disclosure provides a kind of fingerprint Identification sensor and comprises the electronic installation of this fingerprint Identification sensor, can reduce costs, and can on limited area base material, form sufficient amount drive electrode to improve fingerprint recognition resolution.
Fig. 1 schematically shows the fundamental diagram of capacitance type fingerprint detecting element.
As shown in Figure 1, capacitance type fingerprint detecting element comprises fingerprint identification unit, and covers with protective seam 117.Fingerprint identification unit can comprise induction electrode 101 and drive electrode 103, has a detector gap 107 between the two.Fingerprint identification unit is a plurality of, and can arrange single file or multirow, and a fingerprint identification unit is only shown in figure.The induction electrode 101 of fingerprint identification unit and drive electrode 103 can form a basic capacitor.
When finger 190 is pressed or during swiping above fingerprint identification unit, the capacitive coupling between induction electrode 101 and drive electrode 103 can be positioned at detector gap 107 tops according to fingerprint ridge 192 or fingerprint paddy 194 different changes.This is because the specific inductive capacity of fingerprint ridge 10 to 20 times of air (fingerprint paddy) normally.Therefore, fingerprint identification unit under fingerprint ridge than there is larger equivalent capacity under fingerprint paddy.By detecting the capacitance variations (or change in voltage) on it of fingerprint identification unit, can judge what be positioned at this top, unit, be fingerprint ridge or fingerprint paddy, thereby obtain fingerprint image.
Fig. 2 schematically shows according to the structural drawing of the swiping formula fingerprint Identification sensor of the disclosure one example embodiment.Fig. 3 illustrates the cut-open view obtaining along the AA ' line of Fig. 2.Fig. 4 illustrates the cut-open view obtaining along the BB ' line of Fig. 2.
As in Figure 2-4, fingerprint Identification sensor 100 comprises substrate 111, is formed on the embossed layer 113 in substrate 111 and is formed on the fingerprint detection element 110 in embossed layer 113.Embossed layer 113 surfaces are provided with a plurality of grooves 115, and fingerprint detection element 110 is placed in groove 115.According to example embodiment, fingerprint detection element 110 is filling groove 115 completely, and the upper surface of fingerprint detection element 110 is concordant with the upper surface of embossed layer 113, but the disclosure is not limited to this.
As shown in Figure 2, fingerprint detection element 110 comprises induction electrode 101 and many drive electrodes 103 relative with induction electrode 101.Many drive electrode 103 can be arranged in parallel and be spaced apart from each other.Induction electrode 101 can be substantially vertical with many drive electrodes 103.Thereby many drive electrodes 103 define a plurality of detector gap 107 with induction electrode 101 is spaced apart respectively.Every drive electrode 103 can form a fingerprint identification unit with induction electrode 101, thereby induction electrode 101 forms a plurality of fingerprint identification unit with many drive electrodes 103.
Pitch d between adjacent driven electrode 103 can be equal to each other.The width w1 of drive electrode 103 can be equal to each other.The width w2 of induction electrode 101 can be equal to each other with the width w1 of drive electrode 103.The large I of detector gap 107 is equal to each other.But the disclosure is not as limit.
As shown in Figures 3 and 4, the pitch d between adjacent driven electrode 103 for example can be within the scope of 40-60 μ m.The width w1 of drive electrode 103 for example can be within the scope of 20-45 μ m.The width g of detector gap 107 for example can be within the scope of 20-40 μ m.The width g of detector gap 107 can be equal to each other.The degree of depth of groove 115 for example can be within the scope of 20nm-10 μ m.The width w2 of induction electrode 101 for example can be within the scope of 50-60 μ m.
According to an embodiment, the pitch d between adjacent driven electrode 103 is 50 μ m, has realized the recognition resolution of 508PPI.
Substrate 111 can be tempered glass, tempered glass, pottery, sapphire, or PET, PMMA, PC etc.Substrate 111 also can be for flexible printed circuit board (FPC) substrate, as BT, FR4, FR5 etc.
Embossed layer 113 for example can be as ultraviolet-curing resin, hot-setting adhesive, light binding or certainly dry glue.
The material of induction electrode 101 and drive electrode 103 can be identical, also can be different.The material that forms induction electrode 101 and drive electrode 103 can be selected from ITO (tin indium oxide) or metal simple-substance particle as gold, silver, copper, zinc, aluminium one or more, metal alloy conductive material, Graphene, carbon nano-tube material, nanometer conductive material be as Nano Silver etc., but the disclosure is not limited to this.
According to an example embodiment, induction electrode 101 and drive electrode 103 can comprise conductive grid 105, as shown in Figure 5.At this moment, groove 115 has and the corresponding structure of conductive grid 105.Adopt conductive grid, reduced cost, but still can reach the good result of fingerprint recognition.
Fingerprint Identification sensor 100 also can comprise lead-in wire (not shown), is connected with fingerprint detection element 110, and for fingerprint detection element 110 is connected to external circuit, for example fingerprint recognition circuit 109.Lead-in wire also can be placed in groove, and can have the material identical with drive electrode 103 with induction electrode 101.Lead-in wire also can comprise conductive grid.
Fingerprint recognition circuit 109 can provide driving signal to drive electrode 103 orders, and can detect induced signal by induction electrode 101, thus identification fingerprint.But the disclosure is not limited to this.
According to the fingerprint Identification sensor of disclosure embodiment, by utilizing embossed layer to form electrode and lead-in wire in non-silicon base, can improve the reliability of sensor, and can in limited area, form at lower cost the fingerprint sensor of high-resolution.
When finger presses has above the fingerprint Identification sensor of structure as shown in Figure 2, from described a plurality of fingerprint identification unit, can obtain the wire fingerprint image of a reflection fingerprint ridge and fingerprint paddy.When finger is when swiping moves above fingerprint Identification sensor, can obtain many wire fingerprint images, as shown in Figure 6.Described many wire fingerprint pattern capable assemblings become a complete finger print image, as shown in Figure 7.
The following describes according to the manufacture method of the fingerprint Identification sensor of disclosure embodiment.
First, prepare substrate 111, for example PET substrate.Then, can in substrate 111, form embossed layer 113.Embossed layer 113 can be ultraviolet-curing resin, hot-setting adhesive, light binding or dry glue etc. certainly.Then, at embossed layer 113, by imprint process, form groove 115 on away from the surface of substrate 111.Groove 115 according to actual needs can be for for example latticed.
Then, can use blade coating technology in groove 115, to fill for example Nano Silver ink, and toast sintering under about 150 ℃ of conditions, make the silver-colored simple substance in Nano Silver ink sinter conductive electrode pattern into, thereby form induction electrode 101 and drive electrode 103, and form lead-in wire as required.According to an embodiment, silver-colored ink solids is about 35%, and solvent volatilizees in sintering.
Fig. 8 schematically shows according to the structural representation of the fingerprint detection element of another example embodiment of the disclosure.
As shown in Figure 8, according to the fingerprint detection element 210 of present embodiment and the difference of the fingerprint detection element 110 shown in Fig. 2, be that fingerprint detection element 210 also comprises reference electrode 101 ' and illusory drive electrode 103 '.
Reference electrode 101 ' can be oppositely arranged abreast with induction electrode 101, and is positioned at a side contrary with many drive electrodes 103 of induction electrode 101.
Reference electrode 101 ' is enough to provide noise and intercoupling reference for eliminating at least partly common-mode noise with the distance of drive electrode 103.In certain embodiments, reference electrode 101 ' and induction electrode 101 can have equal length and width, and can be arranged in parallel.Reference electrode 101 ' can be similar to the such sensing finger wrinkle ridge/fingerprint paddy of induction electrode 101 signal, but its remitted its fury in fact.Reference electrode 101 ' and induction electrode 101 be interval and have similar size closely, and two electrodes can produce noise and spur signal about equally.The noise and the spur signal that equate coupling can for example be eliminated by deducting two signals on electrode.
According to some embodiment, induction electrode 101 and reference electrode 101 ' can be coupled to differential amplifier 125 by difference filter 123.
Many illusory drive electrode 103 ' is arranged in parallel and can be electrically connected to each other, and described many illusory drive electrodes 103 ' and many drive electrodes 103 are arranged on the opposite side of reference electrode 101 ', i.e. a side contrary with induction electrode 101 accordingly.
Illusory drive electrode 103 ' is spaced apart with gap 107 ' with reference electrode 101 '.Gap 107 ' can be identical with gap 107.Illusory drive electrode 103 ' can be connected to reference potential at fingerprint image during sensing, for example ground connection.In any time moment of fingerprint image sensing, one in drive electrode 103 can be encouraged by driven signal, and remaining drive electrode 103 can be coupled to reference potential, for example ground connection.Utilize this layout, noise is coupled to induction electrode 101 and reference electrode 101 ' in fact of equal valuely, thereby can be eliminated by for example differential amplifier 125.The circuit arrangement of elimination or minimizing noise can be taked variety of way according to the actual requirements, and the disclosure does not limit this.
According to this embodiment, can improve the accuracy of fingerprint recognition, eliminate the coupled interference from the fingerprint ridge outside detector gap.
Fig. 9 schematically shows according to the structural representation of the fingerprint detection element of another example embodiment of the disclosure.
As shown in Figure 9, according to the fingerprint detection element 310 of present embodiment and the difference of the fingerprint detection element 110 shown in Fig. 2, be that fingerprint detection element 310 also comprises the second induction electrode 101 " and many second drive electrodes 103 ".The second induction electrode 101 " can be electrically connected to induction electrode 101.
The second induction electrode 101 " parallel with induction electrode 101 and be set up in parallel, and be positioned at a side contrary with many drive electrodes 103 of induction electrode 101.
Many the second drive electrodes 103 " be arranged in parallel and be spaced apart from each other.Many the second drive electrodes 103 " respectively with the second induction electrode 101 " relative to define a plurality of the second detector gap 107 at interval ".Many the second drive electrodes 103 " with many first drive electrodes 103, the second induction electrode 101 is set accordingly " a side contrary with induction electrode 101.
In the present embodiment, by drive electrode 103, induction electrode 101 and the second drive electrode 103 ", the second induction electrode 101 " form a pair of line imaging device, for generation of fingerprint image more accurately.By finger first by detector gap 107 or 107 " determine the moving direction of pointing.In addition, can be by comparison induction electrode 101 and the second induction electrode 101 " signal intensity determine the translational speed pointed (for example: by calculating identical fingerprint partly by detector gap 107 and 107 " mistiming obtain the translational speed of finger), with this, obtain fingermark image more accurately.
Figure 10 schematically shows according to the structural representation of the fingerprint detection element of another example embodiment of the disclosure.
As shown in figure 10, according to the fingerprint detection element 410 of present embodiment, combine the fingerprint detection element shown in Fig. 8 and Fig. 9.Fingerprint detection element 410 is that with the difference of the fingerprint detection element 310 shown in Fig. 9 fingerprint detection element 410 also comprises two reference electrodes 101 ' and more than two groups illusory drive electrode 103 '.More than two groups illusory drive electrode 103 ' can be electrically connected to each other.
A reference electrode 101 ' can be oppositely arranged and be positioned at a side contrary with many drive electrodes 103 of induction electrode 101 abreast with induction electrode 101.Another reference electrode 101 ' can with the second induction electrode 101 " be oppositely arranged abreast and be positioned at the second induction electrode 101 " and with many second drive electrodes 103 " a contrary side.
More than one group illusory drive electrode 103 ' is arranged in parallel and is electrically connected to each other.Many illusory drive electrodes 103 ' of this group and many drive electrodes 103 are arranged on a side contrary with induction electrode 101 of reference electrode 101 ' accordingly.Many illusory drive electrodes 103 ' of another group are arranged in parallel and are electrically connected to each other.Many illusory drive electrodes 103 ' of this group and many second drive electrodes 103 " be arranged on accordingly reference electrode 101 ' with the second induction electrode 101 " a contrary side.
Similar according to other aspects of the fingerprint detection element 410 of present embodiment and aforementioned fingerprint detection element, do not repeat them here.
Figure 11 schematically shows according to the electronic installation 500 of the disclosure one example embodiment, wherein can comprise aforesaid fingerprint Identification sensor.Electronic installation 500 is such as being smart mobile phone, panel computer etc.
As shown in the figure, electronic installation comprises transparent cover plate 501.Transparent cover plate 501 comprises viewing area 511 and non-display area 515.Fingerprint Identification sensor can be arranged at viewing area 511 or non-display area 515.
According to some embodiment, a part for the non-display area of transparent cover plate is as the substrate 111 of fingerprint Identification sensor.
Figure 12 schematically shows the integrated package 600 according to the touch sensor of disclosure example embodiment and fingerprint sensor.
As shown in figure 12, the integrated package 600 of touch sensor and fingerprint sensor comprises the first flexible and transparent substrate 611 and the first embossed layer 613.The first embossed layer 613 is formed in the first flexible and transparent substrate 611, and the first embossed layer 613 surfaces are provided with a plurality of the first grooves 615 and a plurality of the second groove 617.
Integrated package 600 also comprises: the first touch electrode layer 619, is arranged in a plurality of the first grooves 615; And fingerprint detection element 616 and a plurality of leads 618 being connected with fingerprint detection element 616, be arranged in a plurality of the second grooves 617.
Integrated package 600 also comprises: the second flexible and transparent substrate 621, is arranged in the part of the first embossed layer 613; And second embossed layer 623, be formed in the second flexible and transparent substrate 621.The second embossed layer 623 surfaces are provided with a plurality of the 3rd grooves 625.
Integrated package 600 also comprises: the second touch electrode layer 629, is arranged in a plurality of the 3rd grooves 625.
The first touch electrode layer 619 and the second touch electrode layer 629, for forming touch sensor, for for purpose of brevity, do not repeat them here.
Manufacture the technique of described integrated package and the technique of manufacture fingerprint Identification sensor noted earlier is similar, do not repeat them here.Fingerprint Identification sensor noted earlier can be applied in integrated package 600, therefore repeats no more.According to some embodiment, the first flexible and transparent substrate 611 and the second flexible and transparent substrate 621 are PET film.
According to this embodiment of the present disclosure, can provide the integrated package of a kind of touch sensor and fingerprint sensor.Because touch sensor and fingerprint Identification sensor can utilize identical technique to be fabricated to integrated package simultaneously, therefore can reduce costs.In addition, the component wear causing in the time of can avoiding forming, improves yield rate.
Figure 13 schematically shows the electronic installation 700 according to disclosure example embodiment, comprising the integrated package shown in Figure 12.Electronic installation 700 can be mobile phone, panel computer etc.Figure 13 be take mobile phone and is provided diagram as example, but the disclosure is not as limit.
As shown in figure 13, electronic installation 700 can comprise transparent cover plate 630.Transparent cover plate 630 has end face 631, the bottom surface 633 relative with end face 631 and the side 635 that connects end face 631 and bottom surface 633.Transparent cover plate 630 comprises viewing area 636 and non-display area 638.
Integrated package can fit in bottom surface 633 by OCA layer 651, and bending and fit in the non-display area 638 of side 635 and end face 631 by OCA layer.Fingerprint detection element 616 is positioned on end face 631.A plurality of leads 618 extends to bottom surface 633 from end face 631.
The set-up mode of integrated package 600 on transparent cover plate is not limited to shown in Figure 13.For example, also can make the first flexible and transparent substrate 611 adjacent with transparent cover plate 630, by OCA layer 651, fit in bottom surface 633.
According to some embodiments, electronic installation 700 also can comprise the protective seam 653 that covers fingerprint detection element 616, for the protection of fingerprint detection element 616.Protective seam 653 can be for example diamond-like-carbon, silicon dioxide or UV glue.Protective seam can form by spraying technology or printing technology.
The first touch electrode layer 619 and the second touch electrode layer 629 and lead-in wire 618 can be electrically connected to external circuit by different side's conducting resinl 641, and for example flexible printed circuit board 643, but the disclosure is not as limit.
Below illustrate particularly and described illustrative embodiments of the present disclosure.Should be appreciated that, the disclosure is not limited to disclosed embodiment, and on the contrary, disclosure intention contains various modifications and the equivalent arrangements in the spirit and scope that are included in claims.
Claims (15)
1. an integrated package for touch sensor and fingerprint sensor, is characterized in that, comprising:
The first flexible and transparent substrate;
The first embossed layer, is formed in described the first flexible and transparent substrate, and described the first embossed layer surface is provided with a plurality of the first grooves and a plurality of the second groove;
The first electrode layer, is arranged in described a plurality of the first groove;
Fingerprint detection element and a plurality of leads being connected with described fingerprint detection element, be arranged in described a plurality of the second groove;
The second flexible and transparent substrate, is arranged in the part of described the first embossed layer;
The second embossed layer, is formed in described the second flexible and transparent substrate, and described the second embossed layer surface is provided with a plurality of the 3rd grooves;
The second electrode lay, is arranged in described a plurality of the 3rd groove, and described the first electrode layer and described the second electrode lay are used for forming touch sensor,
Wherein said fingerprint detection element comprises:
The first induction electrode;
Many the first drive electrodes, described many first drive electrodes are arranged in parallel and are spaced apart from each other, and described many first drive electrodes are relative to define a plurality of the first detector gap at interval with described the first induction electrode respectively;
The second induction electrode, is oppositely arranged and is positioned at the side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode;
Many the second drive electrodes, described many second drive electrodes are arranged in parallel and are spaced apart from each other, described many second drive electrodes are relative to define a plurality of the second detector gap at interval with described the second induction electrode respectively, and described many second drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the second electrode accordingly.
2. integrated package as claimed in claim 1, it is characterized in that, pitch between pitch between adjacent the first drive electrode and adjacent the second drive electrode is equal to each other and within the scope of 50-60 μ m, the width of the width of the first drive electrode and the second drive electrode is equal to each other and within the scope of 20-45 μ m, and the size of the first detector gap and the second detector gap is equal to each other and within the scope of 20-40 μ m.
3. integrated package as claimed in claim 1, is characterized in that, described the first flexible and transparent substrate and described the second flexible and transparent substrate are PET film.
4. integrated package as claimed in claim 3, is characterized in that, described the first embossed layer and described the second embossed layer are ultraviolet-curing resin, hot-setting adhesive, light binding or certainly dry glue.
5. integrated package as claimed in claim 4, is characterized in that, described the first electrode layer, described the second electrode lay and/or described fingerprint detection element comprise conductive grid.
6. an electronic installation, is characterized in that, comprises the integrated package as described in claim 1 to 5 any one.
7. electronic installation as claimed in claim 6, it is characterized in that, also comprise transparent cover plate, described transparent cover plate has end face, the bottom surface relative with end face and the side that connects end face and bottom surface, described transparent cover plate comprises viewing area and non-display area, described integrated package fits in described bottom surface by OCA, and bending and fit in the described non-display area of described side and described end face by OCA, wherein said fingerprint detection element is positioned on described end face, and described a plurality of leads extends to described bottom surface from described end face.
8. electronic installation as claimed in claim 7, is characterized in that, described the first flexible and transparent substrate is more close or further from described transparent cover plate than described the second flexible and transparent substrate.
9. electronic installation as claimed in claim 7, is characterized in that, also comprises the protective seam that covers described fingerprint detection element.
10. a fingerprint Identification sensor, is characterized in that, comprising:
Substrate;
Be formed on suprabasil embossed layer, described embossed layer surface is provided with a plurality of grooves; And
Fingerprint detection element, is placed in described a plurality of groove;
Wherein said fingerprint detection element comprises:
The first induction electrode;
Many the first drive electrodes, described many first drive electrodes are arranged in parallel and are spaced apart from each other, and described many first drive electrodes are relative to define a plurality of the first detector gap at interval with described the first induction electrode respectively;
The second induction electrode, is oppositely arranged and is positioned at the side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode;
Many the second drive electrodes, described many second drive electrodes are arranged side by side and are spaced apart from each other, described many second drive electrodes are relative to define a plurality of the second detector gap at interval with described the second induction electrode respectively, and described many second drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the second electrode accordingly.
11. fingerprint Identification sensors as claimed in claim 10, it is characterized in that, pitch between pitch between adjacent the first drive electrode and adjacent the second drive electrode is equal to each other and within the scope of 50-60 μ m, the width of the width of the first drive electrode and the second drive electrode is equal to each other and within the scope of 20-45 μ m, and the size of the first detector gap and the second detector gap is equal to each other and within the scope of 20-40 μ m.
12. fingerprint Identification sensors as claimed in claim 11, is characterized in that, described fingerprint detection element also comprises the first reference electrode and the second reference electrode and many first illusory drive electrodes and many second illusory drive electrodes,
Described the first reference electrode is oppositely arranged and is positioned at a side contrary with described many first drive electrodes of described the first induction electrode abreast with described the first induction electrode, described the second reference electrode is oppositely arranged and is positioned at a side contrary with described many second drive electrodes of described the second induction electrode abreast with described the second induction electrode
Described many first illusory drive electrodes are arranged in parallel and are electrically connected to each other, and described many first illusory drive electrodes and described many first drive electrodes are arranged on a side contrary with described the first induction electrode of described the first reference electrode accordingly,
Described many second illusory drive electrodes are arranged in parallel and are electrically connected to each other, and described many second illusory drive electrodes and described many second drive electrodes are arranged on a side contrary with described the second induction electrode of described the second reference electrode accordingly.
13. fingerprint Identification sensors as claimed in claim 11, is characterized in that, described fingerprint detection element comprises metallic particles, Graphene, carbon nano-tube or conducting polymer composite.
14. fingerprint Identification sensors as claimed in claim 13, is characterized in that, described fingerprint detection element comprises conductive grid.
15. 1 kinds of electronic installations, is characterized in that, comprise the fingerprint Identification sensor as described in any one in claim 10 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364220.8U CN203930873U (en) | 2014-07-02 | 2014-07-02 | Fingerprint Identification sensor, integrated package and electronic installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364220.8U CN203930873U (en) | 2014-07-02 | 2014-07-02 | Fingerprint Identification sensor, integrated package and electronic installation |
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| Publication Number | Publication Date |
|---|---|
| CN203930873U true CN203930873U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420364220.8U Expired - Fee Related CN203930873U (en) | 2014-07-02 | 2014-07-02 | Fingerprint Identification sensor, integrated package and electronic installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528104A (en) * | 2015-07-03 | 2016-04-27 | 宸鸿科技(厦门)有限公司 | A touch control panel having a fingerprint identification function and a method for manufacturing the same |
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2014
- 2014-07-02 CN CN201420364220.8U patent/CN203930873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528104A (en) * | 2015-07-03 | 2016-04-27 | 宸鸿科技(厦门)有限公司 | A touch control panel having a fingerprint identification function and a method for manufacturing the same |
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