CN203773561U - Fingerprint identification device and electronic device with same - Google Patents
Fingerprint identification device and electronic device with same Download PDFInfo
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- CN203773561U CN203773561U CN201420167248.2U CN201420167248U CN203773561U CN 203773561 U CN203773561 U CN 203773561U CN 201420167248 U CN201420167248 U CN 201420167248U CN 203773561 U CN203773561 U CN 203773561U
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Abstract
The utility model provides a fingerprint identification device and an electronic device with the same. The fingerprint identification device comprises a fingerprint input module and a fingerprint identification module. The fingerprint identification module comprises a dielectric layer, a number of drive channels and a number of sensing channels. The dielectric layer comprises grid-shaped grooves. The grid-shaped grooves are filled with a conductive material. A number of drive channels and a number of sensing channels are respectively accommodated in the grid-shaped grooves and are arranged on different planes of the dielectric layer. The drive channels extend along a first dimension direction. The sensing channels extend along a two dimensional direction which intersects with the first dimension direction. The drive channels and the sensing channels are separated and crossed through the dielectric layer to form a number of identification units.
Description
Technical field
The utility model relates to fingerprint identification technology, the electronic installation that relates in particular to a kind of fingerprint identification device and comprise it.
Background technology
In recent years, along with the development of memory technology, electronic equipment stores the capsule information such as a large amount of personal information as mobile phone, computer etc., and its security becomes even more important.At present manyly with forms such as password, figures, realize the cryptoguard to its electronic equipment, user is by pre-entering the password of numeral, letter and combination thereof, or by inputting specific figure to electronic equipment, sets personal identification number protection; When using electronic equipment, again input these passwords or figure, electronic equipment, by the comparison with preset password or figure, is identified the legitimacy of user identity, with this, protects user's privacy.
Yet for cipher modes such as password, figures, user need remember the password of setting, in addition, in public, the danger that also exists password to reveal; And be to improve security, often needing to increase the complexity of password and figure, the difficulty that this has further increased user's memory undoubtedly, causes conflicting between safe and easy-to-use.
The rough lines of finger surface skin is comprised of ridge line graph, and fingerprint recognition is to utilize the feature of fingerprint uniqueness and stability to realize identification, and fingerprint remembers without user, and is easy to carry.Current fingerprint recognition mode mainly contains characteristics of image identification, laser feature identification and slip capacitance sensing.Characteristics of image identification and laser feature identification utilize respectively visible ray and laser approach by the line information extraction of fingerprint ridge and utilize algorithm to carry out signature analysis, identification Different Individual; Two kinds of methods all need, as more complicated space structures such as CCD probe, laser generators, to be unsuitable for lightening application.Tradition slip capacitive transducer is common in notebook computer, by finger sliding sensor sensing face scanning fingerprint information.Fingerprint recognition speed and space simplification degree are better than the above two, but be unsuitable for equally market huge, require Future Consumption electronic applications highly integrated, flexible, light-transmissive.
And the structure of capacitive fingerprint sensing device in currently available technology is silicon substrate structure, its drive electrode and sensing electrode are ITO structure, are about to conductive material and are directly coated on substrate and form conductive pattern, make conductive material use amount large, and easily wearing and tearing; In addition, the conductive material using in prior art is tin indium oxide, and the indium in tin indium oxide is rare metal and expensive.
Utility model content
In view of this, the utility model provides a kind of simple in structure, fingerprint identification device that fingerprint recognition precision is high.
Additional aspect of the present utility model and advantage will partly be set forth in the following description, and partly will from describe, become obviously, or can the acquistion by practice of the present utility model.
The utility model provides a kind of fingerprint identification device on the one hand, comprise fingerprint load module and fingerprint identification module, it is characterized in that, described fingerprint identification module comprises: dielectric layer, described dielectric layer comprises latticed groove, in described latticed groove, is filled with conductive material; And, many drive passage and many sense channel, described many drive passage and described many sense channel to be contained in respectively in described latticed groove, and be arranged in the Different Plane of described dielectric layer, described driving passage extends and arranges along the first dimension direction, described sense channel along and the two-dimensional directional that intersects of described the first dimension direction extend and arrange, described driving passage and described sense channel are separated and intersect to form a plurality of recognition units by described dielectric layer; Wherein, the width of every described driving passage and every described sense channel is all not more than 100 μ m.。
In an embodiment, the distance between adjacent driven passage and between adjacent sense channel is all not more than 100 μ m.
In another embodiment, described dielectric layer is single substrate; Described driving passage and described sense channel are divided on the different surfaces of described substrate.
In another embodiment, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, substrate and the second hypothallus; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of described substrate one side and described the second hypothallus the surface away from described substrate one side.
In another embodiment, described dielectric layer is stepped construction, comprises stacked successively hypothallus, substrate; Described driving passage and described sense channel be divided into described hypothallus away from the surface of described substrate one side and described substrate the surface near described hypothallus one side.
In another embodiment, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, the second hypothallus and substrate; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of the second hypothallus one side and described the second hypothallus the surface away from described substrate one side.
In another embodiment, described dielectric layer is stepped construction, comprises the first stacked successively substrate, bonding coat and the second substrate; Described driving passage and described sense channel be divided into described the first substrate away from the surface of described the second substrate one side and described the second substrate the surface away from described the first substrate one side.
In another embodiment, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, the first substrate, bonding coat, the second substrate and the second hypothallus; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of the first substrate one side and described the second hypothallus the surface away from described the second substrate one side.
In another embodiment, described fingerprint identification module also comprises a plurality of leads, and each described driving passage and each described sense channel are electrically connected to respectively a described lead-in wire.
In another embodiment, described a plurality of leads is latticed groove structure, or is latticed conductor wire or the conduction line segment of projection.
In another embodiment, the mesh shape of described latticed groove is regular grid or random grid.
The utility model provides a kind of electronic equipment on the other hand, comprises above-mentioned any fingerprint identification device.
Fingerprint identification device that the utility model embodiment provides adopts the metal grill structure of groove shape, conductive material is filled in groove, has saved the anti-scratch ability of anti-scratch that conductive material can improve again fingerprint identification device; And the conductive material of filling is mainly argent etc., low price, reduced manufacturing cost.In addition, this fingerprint identification device is offered latticed groove on the dielectric layer of fingerprint identification module, drive passage and sense channel to be contained in respectively the latticed groove that is arranged in different faces on dielectric layer, drive the breadth extreme of passage and sense channel to be all not more than 100 μ m, and the distance between adjacent driven passage or between adjacent sense channel is not more than 100 μ m, guaranteed when finger is placed in fingerprint load module, can there is recognition unit as much as possible with the crestal line of sensing fingerprint, improved accuracy and the precision of fingerprint recognition simultaneously; In addition, finger print information is remembered without user, is easy to carry, solved electronic equipments safety and easy-to-use between contradiction.
Accompanying drawing explanation
By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present utility model and advantage will become more obvious.
The cross sectional representation of the fingerprint identification device that Fig. 1 provides for the utility model embodiment;
Fig. 2 A and Fig. 2 B are respectively floor map and the cross sectional representation of the fingerprint identification module in the utility model embodiment;
Fig. 3 A and Fig. 3 B are respectively driving passage in the utility model embodiment and the floor map of sense channel;
Fig. 4 is another floor map of the fingerprint identification module in the utility model embodiment;
Fig. 5 is the vertical view of the fingerprint identification device shown in Fig. 1;
Fig. 6 is the cross sectional representation of the fingerprint identification module in the utility model embodiment mono-;
Fig. 7 A and Fig. 7 B are the cross sectional representation of the fingerprint identification module of the different embodiment in the utility model embodiment bis-;
Fig. 8 is the cross sectional representation of the fingerprint identification module in the utility model embodiment tri-;
Fig. 9 A and Fig. 9 B are the cross sectional representation of the fingerprint identification module of the different embodiment in the utility model embodiment tetra-;
Figure 10 is the cross sectional representation of the fingerprint identification module in the utility model embodiment five;
Figure 11 is the cross sectional representation of the fingerprint identification module in the utility model embodiment six;
Figure 12 A to Figure 12 D is the mesh shape schematic diagram of the latticed groove of the fingerprint identification module in the utility model embodiment.
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 utility model 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 structure, thereby will omit being repeated in this description them.
Described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, thus provide many details to provide fully understanding embodiment of the present utility model.Yet, one of ordinary skill in the art would recognize that there is no one or more in described specific detail, or adopt other method, constituent element, material etc., also can put into practice the technical solution of the utility model.In other cases, be not shown specifically or describe known configurations, material or operation to avoid fuzzy the utility model.
It should be noted that, when element is called as " being fixed on " another element, can directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may have centering elements simultaneously.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
The cross sectional representation of the fingerprint identification device that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, the fingerprint identification device 10 in the utility model embodiment, comprises fingerprint load module 11 and fingerprint identification module 13, and fingerprint load module 11 and fingerprint identification module 13 are fitted by bonding coat 12.
Fingerprint load module 11 is the panel for fingerprint input.The material of fingerprint load module 11 can be the non-conducting materials such as transparent or nontransparent plastics or glass.Specifically fingerprint load module 11 is PMMA in the present embodiment, and thickness is 1.0～1.5mm.The shape of fingerprint load module 11 can be set as required, can be other shapes such as square, rectangle, circle, the input panel 11 that Fig. 5 provides be shaped as square.
Bonding coat 12 is transparent optical cement, as OCA optical cement or transparent UV glue etc.In concrete the present embodiment, use OCA optical cement, thickness 25 μ m, to reduce the thickness of single unit system.
Please also refer to Fig. 2 A, Fig. 2 B to Fig. 4.Fig. 2 A and Fig. 2 B are respectively floor map and the cross sectional representation of the fingerprint identification module in the utility model embodiment.Fig. 3 A and Fig. 3 B are respectively driving passage in the utility model embodiment and the floor map of sense channel.Fig. 4 is another floor map of the fingerprint identification module in the utility model embodiment.As shown in Figure 2 B, fingerprint identification module 13 comprises dielectric layer 100 and drives passage 14 and sense channel 15.Dielectric layer 100 comprises latticed groove 131.Drive passage 14 and sense channel 15 to be contained in the interior latticed groove 131 of latticed groove 131 and be filled with conductive material, as metal or its combinations such as silver, copper, gold, aluminium.
For coordinating exterior I C circuit, will drive passage 14 and sense channel 15 to be designed to different conductive patterns, strip as shown in Figure 2 A or rhombus as shown in Figure 4, can be also other figures, the utility model is not as limit.
Finger is when contacting with fingerprint identification device, convex ridge place and trench place actual range different manifestations for the capacitance producing different, and its value is in pico farad (pF) rank, thereby the current signal of its transmission also there are differences, these faint current signal differences are amplified by IC process chip, with this, judge convex ridge place and the trench place of fingerprint.As shown in Figure 2 A, drive passage 14 to extend and arrange along the first dimension direction, sense channel 15 is along extending and arrange with the crossing second direction of the first dimension direction, and the first dimension direction is X-direction, and two-dimensional directional is Y direction.In Fig. 4, the first dimension direction is Y-axis, and two-dimensional directional is X-axis, and the first dimension direction is vertical with two-dimensional directional.Drive passage 14 and sense channel 15 separated by dielectric layer 100, and the circle that square crossing forms in a plurality of recognition unit 180(figure only illustrates the position of recognition unit for circle, do not there are other meanings).The current signal that each recognition unit 180 detects in this recognition unit, and these current signals are sent to IC process chip, according to the difference of current signal, detect the position of convex ridge and trench, thereby sketch the contours of the lines train of thought of finger, then by comparing with the fingerprint of pre-stored, can realize the evaluation to user identity.
Because people's fingerprint convex ridge width and trench place width are all roughly between 150-300 μ m, in the utility model, drive the breadth extreme of passage and sense channel to be not more than 100 μ m, as the width L2 of sense channel in the width L1 of the driving passage in Fig. 3 A and Fig. 3 B is all not more than 100 μ m, can guarantee that the quantity that can sense crestal line or trench in single recognition unit is not more than 1, thereby guarantee that same detection coordinates can only a corresponding crestal line or the position of a trench; And the distance S2 between the distance S1 between adjacent driven passage and adjacent sense channel is all not more than 100 μ m.Please again consult Fig. 2 A and Fig. 2 B, when hand 18 is placed on fingerprint load module 13, distance between adjacent driven passage and adjacent sense channel is all less than 100 μ m, be that distance between each adjacent recognition unit 180 is less than 100 μ m, guaranteeing like this can have 2-5 recognition unit to induce different capacitance signals to determine the position of ridge line or trench simultaneously, compare the pattern of original individual unit reflection convex ridge or trench position, the accurate input signal of sensing fingerprint, the degree of accuracy and the sensitivity that improve fingerprint identification device.
For conductive pattern as shown in Figure 4, preferably, the breadth extreme of this driving passage 14 and sense channel 15 is not more than 100 μ m, driving the breadth extreme of passage 14 and sense channel 15 is the cornerwise length L 3 of rhombus, and the distance S3 that the ultimate range between adjacent driven interchannel or adjacent sense channel is between argyle design connecting portion is not more than 100 μ m.
Fig. 5 is the vertical view of the fingerprint identification device shown in Fig. 1.As shown in Figure 5, fingerprint identification device 10 also comprises lead wire set 16, lead wire set 16 is connected to outside IC process chip (not shown), and fingerprint identification device 10 receives fingerprint input signal, and by lead wire set 16, fingerprint input signal is sent to exterior I C process chip.
Drive passage 14 or sense channel 15 to be connected with lead wire set 16 by going between separately, each drives passage 14 or each sense channel 15 driving lead-in wire or sense lead corresponding with to be electrically connected to, insulation between adjacent driven passage 14 or adjacent sense channel 15.As shown in Fig. 2 A or Fig. 4, between adjacent driven passage 14 or adjacent sense channel 15, with blank, insulation is shown.In other embodiments, grid that also can be identical with driving passage 14 or sense channel 15 is filled, and the mesh lines of this grid disconnects with driving the mesh lines of passage 14 or sense channel 15, or the mesh lines of this grid is the mesh lines disconnecting each other.
The fingerprint identification device 10 that the utility model provides can be arranged in the structure or shell of electronic equipment or other equipment, as is arranged in the button of mobile phone or panel computer, for locking or release electronic equipment.Now, fingerprint identification device 10 is positioned at the invisible area of equipment, and its dielectric layer 100 can be nontransparent insulating material.In addition, fingerprint identification device 10 also can be disposed at the visible area of electronic equipment etc., is used in conjunction with the display unit of electronic equipment, for the authentication of electronic apparatus system operational process, as bank account safety verification, its dielectric layer 100 is transparent insulating material.
In certain embodiments, fingerprint identification module has different structures, will introduce in detail below.
Embodiment mono-
Fig. 6 is the cross sectional representation of the fingerprint identification module in the utility model embodiment mono-.As shown in Figure 6, fingerprint identification module 13 comprises dielectric layer 100 and drives passage 14 and sense channel 15.In the present embodiment, dielectric layer 100 is single substrate.Substrate 100 comprises first surface and the second surface being oppositely arranged with first surface, offers respectively latticed groove 131 on first surface and second surface.Drive passage 14 and sense channel 15 to be contained in latticed groove 131.For guaranteeing the precision of fingerprint recognition, in the present embodiment, preferred, driving the breadth extreme of passage 14 and sense channel 15 is 50 μ m; Ultimate range between adjacent driven passage 14 or between adjacent sense channel 15 is 10 μ m.
As shown in Figure 6, at the interior filled conductive material of latticed groove 131, through conductive pattern design, on the first surface of dielectric layer 100 and second surface, form and drive passage 14 and sense channel 15 respectively, to coordinate exterior I C circuit.As shown in Figure 3A, drive passage 14 to be designed to horizontally disposed strip; As shown in Figure 3 B, sense channel 15 is designed to vertically disposed strip, separated and vertical by dielectric layer 100 with driving passage 14.
Above-mentioned fingerprint identification module 13 also comprises lead-in wire electrode 17.As shown in Figure 6, offer latticed groove 132 in the edge-invisible area of dielectric layer 110, lead-in wire electrode 17 is contained in latticed groove 132.Lead-in wire electrode 17 is electrically connected to driving passage 14 and the sense channel 15 of fingerprint identification module 13 respectively, and is connected with lead wire set 16.Meanwhile, lead-in wire electrode 17 can be by serigraphy or inkjet printing, to form protruding latticed conductor wire or conduction line segment on dielectric layer 110 surfaces.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.
The width of latticed groove 131 and latticed groove 132 is 0.2 μ m～5 μ m, and the degree of depth is 2 μ m～6 μ m, and the ratio of the degree of depth and width is greater than 1.The mesh shape of latticed groove 131 is rule or irregular grid, as shown in Figure 12 A to Figure 12 D, the mesh shape of latticed groove 131 can be any one in regular hexagon, square, rhombus, rectangle, parallelogram, curvilinear boundary quadrilateral or random grid.Corresponding, driving the mesh shape of passage 14 and sense channel 15 can be regular hexagon, square, rhombus, rectangle, parallelogram, curvilinear boundary quadrilateral or random grid shape.
In addition,, in order to reduce the integral thickness of device, in the present embodiment, the thickness of dielectric layer is less than 200 μ m.
Embodiment bis-
Fig. 7 A and Fig. 7 B are the cross sectional representation of the fingerprint identification module of the different embodiment in the utility model embodiment bis-.In the present embodiment, fingerprint identification module 23 comprises dielectric layer 200 and drives passage 24 and sense channel 25.Dielectric layer 200 is stepped construction, dielectric layer 200 comprises the first stacked successively hypothallus 211, substrate 210 and the second hypothallus 221, the first hypothallus 211 all offers latticed groove 231 away from surface and second hypothallus 221 of substrate 210 1 sides away from the surface of substrate 210 1 sides, drive passage 24 and sense channel 25 to be contained in latticed groove 231, through conductive pattern, design, surface and the second hypothallus 221 at the first hypothallus 211 away from substrate 210 1 sides form respectively and drive passage 24 and sense channel 25 away from the surface of substrate 210 1 sides, driving the pattern of passage 24 and sense channel 25 can be strip, as shown in Figure 2 A, also can be rhombus, as shown in Figure 4, also can be other patterns, for guaranteeing the precision of fingerprint recognition, drive the breadth extreme of passage 24 and sense channel 25 to be not more than 100 μ m, ultimate range between adjacent driven passage 24 or between adjacent sense channel 25 is not more than 100 μ m, in the present embodiment, preferably, driving the breadth extreme of passage 24 and sense channel 25 is 60 μ m, and the ultimate range that 24, adjacent driven passage or adjacent sense channel are 25 is 20 μ m.
Above-mentioned fingerprint identification module 23 also comprises lead-in wire electrode 27.As shown in Figure 7 A, offer latticed groove 232 in the edge-invisible area of the first hypothallus 211 and the second hypothallus 221, lead-in wire electrode 27 is contained in latticed groove 232.Lead-in wire electrode 27 is electrically connected to driving passage 24 and sense channel 25 respectively, and is connected with lead wire set 16 as shown in Figure 5.As shown in Figure 7 B, lead-in wire electrode 27 also can be by serigraphy or inkjet printing, to form protruding latticed conductor wire or conduction line segment on the first hypothallus 211 or the second hypothallus 221 surfaces.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.
Other structures and the structure described in embodiment mono-of the fingerprint identification device described in the present embodiment are similar, do not repeat them here.
Embodiment tri-
Fig. 8 is the cross sectional representation of the fingerprint identification module in the utility model embodiment tri-.In the present embodiment, fingerprint identification module 33 comprises dielectric layer 300 and identification layer.Dielectric layer 300 is stepped construction, comprises stacked successively substrate 310 and hypothallus 311.Identification layer comprises driving passage 34 and sense channel 35, hypothallus 311 away from a side surface of substrate 310 and substrate 310 near offering respectively latticed groove 331 on the surface of hypothallus 311 1 sides, identification layer is contained in latticed groove 331, through conductive pattern design, at hypothallus 311, away from the surface of substrate 310 1 sides and in substrate 310, form respectively near the surface of hypothallus 311 1 sides and drive passage 34 and sense channel 35.Driving the pattern of passage 34 and sense channel 35 can be strip as shown in Figure 2 A, can be also rhombus as shown in Figure 4, can be also other patterns.For guaranteeing the precision of fingerprint recognition, drive the breadth extreme of passage 34 and sense channel 35 to be not more than 100 μ m, the ultimate range between adjacent driven passage 34 or between adjacent sense channel 35 is not more than 100 μ m.In the present embodiment, preferred, driving the breadth extreme of passage 34 and sense channel 35 is 70 μ m, and the ultimate range between adjacent driven passage 34 or between adjacent driven passage 35 is 30 μ m.
Above-mentioned fingerprint identification module 33 also comprises lead-in wire electrode 37.As shown in Figure 8, offer latticed groove 332 in the edge-invisible area of hypothallus 311 and substrate 310, lead-in wire electrode 37 is contained in latticed groove 332.Lead-in wire electrode 37 is electrically connected to driving passage 34 and sense channel 35 respectively, and is connected with lead wire set 16 as shown in Figure 5.In addition, lead-in wire electrode 37 also can be by serigraphy or inkjet printing, to form protruding latticed conductor wire or conduction line segment (not shown) on hypothallus 311 or substrate 310 surfaces.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.
Other structures and the structure described in embodiment mono-of the fingerprint identification device described in the present embodiment are similar, do not repeat them here.
Embodiment tetra-
Fig. 9 A and Fig. 9 B are the cross sectional representation of the fingerprint identification module of the different embodiment in the utility model embodiment tetra-.In the present embodiment, fingerprint identification module 43 comprises dielectric layer 400 and identification layer.Dielectric layer 400 is stepped construction, comprise stacked successively substrate 410, the second hypothallus 421 and the first hypothallus 411, identification layer comprises driving passage 44 and sense channel 45, the first hypothallus 411 is away from a side surface of substrate 410 and the second hypothallus 421 away from offering respectively latticed groove 431 on the surface of substrate 410 1 sides, identification layer is contained in latticed groove 431.Through conductive pattern, design, the first hypothallus 411 away from the surface of substrate 410 1 sides on and the second hypothallus 421 form to drive respectively passage 44 and sense channel 45 on away from the surface of substrate 410 1 sides, driving the pattern of passage 44 and sense channel 45 can be strip as shown in Figure 2 A, also can be rhombus as shown in Figure 4, can be also other patterns.For guaranteeing the precision of fingerprint recognition, drive the breadth extreme of passage 44 and sense channel 45 to be not more than 100 μ m, ultimate range between adjacent driven passage 44 or between adjacent sense channel 45 is not more than 100 μ m, in the present embodiment, preferably, driving the breadth extreme of passage 44 and sense channel 45 is 80 μ m, and the ultimate range between adjacent driven passage 44 or between adjacent driven passage 45 is 40 μ m.
Above-mentioned fingerprint identification module 43 also comprises lead-in wire electrode 47.As shown in Figure 9 A, in the first hypothallus 411 and the edge-invisible area of the second hypothallus 421 away from substrate 410, offer latticed groove 432, lead-in wire electrode 47 is contained in latticed groove 432.Lead-in wire electrode 47 is electrically connected to driving passage 44 and sense channel 45 respectively, and is connected with lead wire set 16 as shown in Figure 5.In addition, as shown in Figure 9 B, lead-in wire electrode 47 can be by serigraphy or inkjet printing, to form respectively protruding latticed conductor wire or to conduct electricity line segment 47 on away from substrate 410 surfaces at the first hypothallus 411 and the second hypothallus 421.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.
Embodiment five
Figure 10 is the cross sectional representation of the fingerprint identification module in the utility model embodiment five.In the present embodiment, fingerprint identification module 53 comprises dielectric layer 500 and identification layer.Dielectric layer 500 is stepped construction, comprises the first stacked successively substrate 510, bonding coat (in figure with oblique line part) and the second substrate 520.Identification layer comprises driving passage 54 and sense channel 55.The first substrate 510 is away from a side surface of bonding coat and the second substrate 520 away from offering respectively latticed groove 531 on the surface of bonding coat one side, identification layer is contained in latticed groove 531.Through conductive pattern design, the first substrate 510 away from the surface of bonding coat one side on and the second substrate form respectively on away from the surface of bonding coat one side and drive passage 54 and sense channel 55.Driving the pattern of passage 54 and sense channel 55 can be strip as shown in Figure 2 A, can be also rhombus as shown in Figure 4, can be also other patterns.For guaranteeing the precision of fingerprint recognition, drive the breadth extreme of passage 54 and sense channel 55 to be not more than 100 μ m, ultimate range between adjacent driven passage 54 or between adjacent sense channel 55 is not more than 100 μ m, in the present embodiment, preferably, driving the breadth extreme of passage 54 and sense channel 55 is 40 μ m, and the ultimate range between adjacent driven passage 54 or between adjacent driven passage 55 is 10 μ m.
Above-mentioned fingerprint identification module 53 also comprises lead-in wire electrode 57.As shown in figure 10, the first substrate 510 and the second substrate 520 are away from offering respectively latticed groove 532 in the edge-invisible area of bonding coat, and lead-in wire electrode 57 is contained in latticed groove 532, as shown in figure 10.Lead-in wire electrode 57 is electrically connected to driving passage 54 and sense channel 55 respectively, and is connected with lead wire set 16 as shown in Figure 5.In addition, lead-in wire electrode 57 also can be by serigraphy or inkjet printing, to form protruding latticed conductor wire or conduction line segment (not shown) on the first substrate 510 and the second surface of substrate 520 away from bonding coat.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.
Other structures and the structure described in embodiment mono-of the fingerprint identification device described in the present embodiment are similar, do not repeat them here.
Embodiment six
Figure 11 is the cross sectional representation of the fingerprint identification module in the utility model embodiment six.In the present embodiment, fingerprint identification module 63 comprises dielectric layer 600 and identification layer.Dielectric layer 600 is stepped construction, comprises the first stacked successively hypothallus 611, the first substrate 610, bonding coat (in figure with oblique line part), the second substrate 620 and the second hypothallus 621.Identification layer comprises driving passage 64 and sense channel 65, the first hypothallus 611 is away from offering respectively latticed groove 631 on a side surface of the first substrate 610 and the surface of the second hypothallus 621 away from the second substrate 620 1 sides, identification layer is contained in latticed groove 631, through conductive pattern design, the first hypothallus 611 away from the surface of the first substrate 610 1 sides on and the second hypothallus 621 form respectively on away from the surface of the second substrate 620 1 sides and drive passage 64 and sense channel 65; Driving the pattern of passage 64 and sense channel 65 can be strip as shown in Figure 2 A, can be also rhombus as shown in Figure 4, can be also other patterns.For guaranteeing the precision of fingerprint recognition, drive the breadth extreme of passage 64 and sense channel 65 to be not more than 100 μ m, the ultimate range between adjacent driven passage 64 or between adjacent sense channel 65 is not more than 100 μ m.In the present embodiment, preferred, driving the breadth extreme of passage 64 and sense channel 65 is 45 μ m, and the ultimate range between adjacent driven passage 64 or between adjacent driven passage 65 is 15 μ m.
Above-mentioned fingerprint identification module 63 also comprises lead-in wire electrode 67.As shown in figure 11, lead-in wire electrode 67 can be by serigraphy or inkjet printing, to form protruding latticed conductor wire or to conduct electricity line segment 67 on away from the first substrate 610 and the surface away from the second substrate 620 at the first hypothallus 611 and the second hypothallus 621.The minimum widith of the latticed conductor wire of projection or conduction line segment can be 10 μ m～200 μ m, can be highly 5 μ m～10 μ m.In addition, also can away from the edge of the first substrate 610 and the second hypothallus 621, offer respectively latticed groove in away from the edge-invisible area of the second substrate 620 at the first hypothallus 611, lead-in wire electrode 67 is contained in (not shown) in latticed groove.Lead-in wire electrode 67 is electrically connected to driving passage 64 and sense channel 65 respectively, and is connected with lead wire set 16 as shown in Figure 5.
Other structures and the structure described in embodiment mono-of the fingerprint identification device described in the present embodiment are similar, do not repeat them here.
Fingerprint identification device that the utility model embodiment provides adopts the metal grill structure of groove shape, conductive material is filled in groove, has saved the anti-scratch ability of anti-scratch that conductive material can improve again fingerprint identification device; And fill conductive material be mainly argent etc., low price, reduced manufacturing cost.In addition, this fingerprint identification device is offered latticed groove on the dielectric layer of fingerprint identification module, drive passage and sense channel to be contained in respectively the latticed groove that is arranged in different faces on dielectric layer, drive the breadth extreme of passage and sense channel to be all not more than 100 μ m, and the distance between adjacent driven passage or between adjacent sense channel is not more than 100 μ m, guaranteed when finger is placed in fingerprint load module, can there is recognition unit as much as possible with the crestal line of sensing fingerprint, improved accuracy and the precision of fingerprint recognition simultaneously; In addition, finger print information is remembered without user, is easy to carry, solved electronic equipments safety and easy-to-use between contradiction.
Below illustrate particularly and described illustrative embodiments of the present utility model.Should be appreciated that, the utility model is not limited to disclosed embodiment, and on the contrary, the utility model intention contains various modifications and the equivalent replacement comprising within the scope of the appended claims.
Claims (12)
1. a fingerprint identification device, comprises fingerprint load module and fingerprint identification module, it is characterized in that, described fingerprint identification module comprises:
Dielectric layer, described dielectric layer comprises latticed groove, in described latticed groove, is filled with conductive material; And,
Many drive passage and many sense channel, described many drive passage and described many sense channel to be contained in respectively in described latticed groove, and be arranged in the Different Plane of described dielectric layer, described driving passage extends and arranges along the first dimension direction, described sense channel along and the two-dimensional directional that intersects of described the first dimension direction extend and arrange, described driving passage and described sense channel are separated and intersect to form a plurality of recognition units by described dielectric layer;
Wherein, the width of every described driving passage and every described sense channel is all not more than 100 μ m.
2. fingerprint identification device according to claim 1, is characterized in that, the distance between adjacent driven passage and between adjacent sense channel is all not more than 100 μ m.
3. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is single substrate; Described driving passage and described sense channel are divided on the different surfaces of described substrate.
4. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, substrate and the second hypothallus; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of described substrate one side and described the second hypothallus the surface away from described substrate one side.
5. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is stepped construction, comprises stacked successively hypothallus, substrate; Described driving passage and described sense channel be divided into described hypothallus away from the surface of described substrate one side and described substrate the surface near described hypothallus one side.
6. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, the second hypothallus and substrate; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of the second hypothallus one side and described the second hypothallus the surface away from described substrate one side.
7. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is stepped construction, comprises the first stacked successively substrate, bonding coat and the second substrate; Described driving passage and described sense channel be divided into described the first substrate away from the surface of described the second substrate one side and described the second substrate the surface away from described the first substrate one side.
8. fingerprint identification device according to claim 1, is characterized in that, described dielectric layer is stepped construction, comprises the first stacked successively hypothallus, the first substrate, bonding coat, the second substrate and the second hypothallus; Described driving passage and described sense channel be divided into described the first hypothallus away from the surface of the first substrate one side and described the second hypothallus the surface away from described the second substrate one side.
9. fingerprint identification device according to claim 1, is characterized in that, described fingerprint identification module also comprises a plurality of leads, and each described driving passage and each described sense channel are electrically connected to respectively a described lead-in wire.
10. fingerprint identification device according to claim 9, is characterized in that, described a plurality of leads is latticed groove structure, or is latticed conductor wire or the conduction line segment of projection.
11. fingerprint identification devices according to claim 1, is characterized in that, the mesh shape of described latticed groove is regular grid or random grid.
12. 1 kinds of electronic installations, is characterized in that, comprise the fingerprint identification device described in claim 1-11 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420167248.2U CN203773561U (en) | 2014-04-08 | 2014-04-08 | Fingerprint identification device and electronic device with same |
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| CN201420167248.2U CN203773561U (en) | 2014-04-08 | 2014-04-08 | Fingerprint identification device and electronic device with same |
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| CN203773561U true CN203773561U (en) | 2014-08-13 |
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| CN201420167248.2U Expired - Fee Related CN203773561U (en) | 2014-04-08 | 2014-04-08 | Fingerprint identification device and electronic device with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932743A (en) * | 2015-06-11 | 2015-09-23 | 京东方科技集团股份有限公司 | Finger print identification device and driving method thereof, and display device |
| CN105138988A (en) * | 2015-08-26 | 2015-12-09 | 京东方科技集团股份有限公司 | Mutual capacitive fingerprint identification device, preparation method, display panel and display device |
-
2014
- 2014-04-08 CN CN201420167248.2U patent/CN203773561U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932743A (en) * | 2015-06-11 | 2015-09-23 | 京东方科技集团股份有限公司 | Finger print identification device and driving method thereof, and display device |
| CN105138988A (en) * | 2015-08-26 | 2015-12-09 | 京东方科技集团股份有限公司 | Mutual capacitive fingerprint identification device, preparation method, display panel and display device |
| US10223570B2 (en) | 2015-08-26 | 2019-03-05 | Boe Technology Group Co., Ltd. | Mutual-capacitance touch sensing pattern recognition device, fabricating method thereof, related display panel, and related display apparatus |
| US10558837B2 (en) | 2015-08-26 | 2020-02-11 | Boe Technology Group Co., Ltd. | Mutual-capacitance touch sensing pattern recognition device, fabricating method thereof, related display panel, and related display apparatus |
| CN105138988B (en) * | 2015-08-26 | 2020-02-21 | 京东方科技集团股份有限公司 | Mutual-capacitance type fingerprint identification device, preparation method, display panel and display equipment |
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