CN104077573A - Fingerprint recognition sensor, fingerprint recognition detection assembly and terminal device - Google Patents
Fingerprint recognition sensor, fingerprint recognition detection assembly and terminal device Download PDFInfo
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- CN104077573A CN104077573A CN201410313087.8A CN201410313087A CN104077573A CN 104077573 A CN104077573 A CN 104077573A CN 201410313087 A CN201410313087 A CN 201410313087A CN 104077573 A CN104077573 A CN 104077573A
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Abstract
The invention discloses a fingerprint recognition sensor, a fingerprint recognition detection assembly and a terminal device. The fingerprint recognition detection assembly is used for the terminal device and comprises a fingerprint recognition sensing element formed on a transparent cover plate of the terminal device. The fingerprint recognition sensing element comprises at least one first sensing electrode, a plurality of first driving electrodes, at least one second sensing electrode, a plurality of second driving electrodes, at least one third sensing electrode and a plurality of third driving electrodes, wherein the first driving electrodes and at least one first sensing electrode define multiple first detection gaps, the second driving electrodes and the at least one second sensing electrode define multiple second detection gaps, the second driving electrodes and the first driving electrodes are arranged in two directions which are approximately perpendicular, the third driving electrodes and at least one third sensing electrode define multiple detection gaps, and the third driving electrodes are located one side of at least one third sensing electrode opposite to at least one first sensing electrode.
Description
Technical field
The present invention relates to technical field of biometric identification, relate in particular to a kind of fingerprint Identification sensor, fingerprint recognition detection components and terminal device.
Background technology
In recent years, along with the development of memory technology, terminal device stores the capsule information such as a large amount of personal information as smart mobile phone, panel computer etc., and its security becomes even more important.How by forms such as password, figures, to realize the cryptoguard to its terminal device at present.
Yet for cipher modes such as password, figures, user need remember password and/or the figure set; In addition, in public, the danger that also exists password to reveal.And in order 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.
Fingerprint is comprised of the rough lines of finger surface skin, is the unique feature of human body, and its complexity can be provided for enough features of identification.Fingerprint recognition is to utilize the feature of fingerprint uniqueness and stability to realize identification, and remembers without user.
Capacitance type fingerprint identification sensor forms conducting channel on base material substrate, and when finger contacts with sensor, fingerprint pattern is surveyed and formed to the different capacitances that produce by the projection of fingerprint ridge and the depression of fingerprint paddy.
When carrying out fingerprint recognition by fingerprint Identification sensor, people's finger print face and the distance between fingerprint Identification sensor can not be excessively far away, if hypertelorism is difficult to form fingerprint pattern accurately.
Summary of the invention
The invention provides a kind of scratching formula fingerprint Identification sensor that can twocouese carries out fingerprint recognition, for user's use has increased facility; A kind of fingerprint recognition detection components of can twocouese carrying out fingerprint recognition is provided in addition, on terminal device, has been particularly useful for transparent cover plate and designs the terminal device without embedded entity button for integral type.
Additional aspect of the present invention 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 invention.
One aspect of the present invention provides a kind of fingerprint Identification sensor, comprising: substrate; And, fingerprint recognition sensing element, it is formed in described substrate, comprising: at least one the first induction electrode; Some the first drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the first induction electrode compartment of terrain, to define a plurality of the first detector gap; At least one the second induction electrode, itself and the substantially vertical setting of described at least one the first induction electrode; Some the second drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the second induction electrode compartment of terrain, to define a plurality of the second detector gap; Described some the second drive electrodes with described some the first drive electrodes along substantially vertical both direction setting each other; At least one the 3rd induction electrode, it is parallel with described at least one the first induction electrode and be set up in parallel, and is positioned at a side described at least one the first induction electrode, contrary with described some the first drive electrodes; And, some the 3rd drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 3rd induction electrode compartment of terrain, to define a plurality of the 3rd detector gap; Described some the 3rd drive electrodes are positioned at a side described at least one the 3rd induction electrode, contrary with described at least one the first induction electrode.
In an embodiment, described fingerprint Identification sensor also comprises: at least one the 4th induction electrode, it is parallel with described at least one the second induction electrode and be set up in parallel, be positioned at a side described at least one the second induction electrode, contrary with described some the second drive electrodes, and with the substantially vertical setting of described at least one the 3rd induction electrode; And, some 4 wheel driven moving electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 4th induction electrode compartment of terrain, to define a plurality of the 4th detector gap; Described some 4 wheel driven moving electrodes are positioned at a side described at least one the 4th induction electrode, contrary with described at least one the second induction electrode.
In another embodiment, described at least one the first induction electrode intersects and is electrically connected between two with described at least one the second induction electrode; And/or described some the first drive electrodes intersect and are electrically connected between two with described some the second drive electrodes.
In another embodiment, described some the first drive electrodes and the equal spaced set of described some the 3rd drive electrodes, and its spacing scope is within the scope of 40 μ m-60 μ m; The width of the width of described some the first drive electrodes and described some the 3rd drive electrodes is equal to each other, and its width range is in 20 μ m-45 μ m; The size of described a plurality of the first detector gap and the size of described a plurality of the 3rd detector gap are equal to each other, and its interstice coverage is in 20 μ m-40 μ m; The width of the width of described at least one the first induction electrode and described at least one the 3rd induction electrode equates, and its width range is in 20 μ m-45 μ m.
In another embodiment, described at least one the 3rd induction electrode intersects and is electrically connected between two with described at least one the 4th induction electrode.
In another embodiment, described some the second drive electrodes and the equal spaced set of described some 4 wheel driven moving electrodes, and its spacing scope is within the scope of 40 μ m-60 μ m; The width of described some the second drive electrodes and the width of described some 4 wheel driven moving electrodes are equal to each other, and its width range is in 20 μ m-45 μ m; The size of described a plurality of the second detector gap and the size of described a plurality of the 4th detector gap are equal to each other, and its interstice coverage is in 20 μ m-40 μ m; The width of the width of described at least one the second induction electrode and described at least one the 4th induction electrode equates, and its width range is in 20 μ m-45 μ m.
The present invention provides a kind of terminal device on the other hand, comprises above-mentioned any fingerprint Identification sensor.
Further aspect of the present invention provides a kind of fingerprint recognition detection components, comprising: fingerprint recognition sensing element, and it is formed on the transparent cover plate of described terminal device, comprising: at least one the first induction electrode; Some the first drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the first induction electrode compartment of terrain, to define a plurality of the first detector gap; At least one the second induction electrode, itself and the substantially vertical setting of described at least one the first induction electrode; Some the second drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the second induction electrode compartment of terrain, to define a plurality of the second detector gap; Described some the second drive electrodes with described some the first drive electrodes along substantially vertical both direction setting each other; At least one the 3rd induction electrode, it is parallel with described at least one the first induction electrode and be set up in parallel, and is positioned at a side described at least one the first induction electrode, contrary with described some the first drive electrodes; And, some the 3rd drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 3rd induction electrode compartment of terrain, to define a plurality of the 3rd detector gap; Described some the 3rd drive electrodes are positioned at a side described at least one the 3rd induction electrode, contrary with described at least one the first induction electrode.
In an embodiment, described fingerprint recognition detection components also comprises: at least one the 4th induction electrode, it is parallel with described at least one the second induction electrode and be set up in parallel, be positioned at a side described at least one the second induction electrode, contrary with described some the second drive electrodes, and with the substantially vertical setting of described at least one the 3rd induction electrode; And, some 4 wheel driven moving electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 4th induction electrode compartment of terrain, to define a plurality of the 4th detector gap; Described some 4 wheel driven moving electrodes are positioned at a side described at least one the 4th induction electrode, contrary with described at least one the second induction electrode.
In another embodiment, described at least the first induction electrode intersects and is electrically connected between two with described at least one the second induction electrode.
In another embodiment, described at least one the 3rd induction electrode intersects and is electrically connected to described at least one the 3rd induction electrode.
In another embodiment, on the transparent cover plate of described terminal device, be formed with a plurality of through holes, in described a plurality of through holes, be provided with conductive material; Described fingerprint recognition sensing element is electrically connected to described a plurality of through holes.
In another embodiment, described fingerprint recognition detection components also comprises: side lead-in wire, the first lead-in wire and the second lead-in wire; Wherein, the transparent cover plate of described terminal device have first surface, with second of the corresponding setting of described first surface and connect described first surface and the side of second; Described side lead-in wire is arranged at described side; Described fingerprint recognition sensing element is arranged at described first surface; Described the first lead-in wire is arranged at described first surface, and one end of described the first lead-in wire is electrically connected to described fingerprint recognition sensing element, and the other end connects described side lead-in wire; And described the second lead-in wire is arranged at described second, one end of described the second lead-in wire is electrically connected to described side lead-in wire.
In another embodiment, described fingerprint recognition detection components also comprises: flexible substrate and lead-in wire; Wherein, the transparent cover plate of described terminal device have first surface, with second of the corresponding setting of described first surface and connect described first surface and the side of second; Described flexible substrate is arranged on described first surface, and extends to described second along the bending of described side, and is covered at least in part described second; Described fingerprint recognition sensing element is arranged in described flexible substrate, and is positioned at described first surface; And described lead-in wire is arranged in described flexible substrate, one end of described lead-in wire is electrically connected to described fingerprint recognition sensing element, and the other end extends to described second.
In another embodiment, described fingerprint recognition sensing element is formed on the transparent cover plate of described terminal device by sputter, evaporation or wire mark.
In another embodiment, described fingerprint recognition detection components also comprises the protective seam being formed on described fingerprint recognition sensing element.
Further aspect of the present invention provides a kind of terminal device, comprises above-mentioned any fingerprint recognition detection components.
In an embodiment, the transparent cover plate of described terminal comprises He Fei visible area, visible area, and the fingerprint recognition sensing element in described fingerprint recognition detection components is formed at described non-visible area.
The fingerprint Identification sensor of the embodiment of the present invention or fingerprint recognition detection components, by the fingerprint recognition sensing element that can be used for scanning fingerprint pattern is set respectively on both direction, realized the fingerprint detection function on both direction, convenient for users to use.
Accompanying drawing explanation
By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present invention and advantage will become more obvious.
Fig. 1 is the sectional view of the fingerprint Identification sensor of the embodiment of the present invention.
Fig. 2 is the structural representation of the fingerprint recognition sensing element of the embodiment of the present invention.
Fig. 3 is the terminal device schematic diagram of the fingerprint Identification sensor that comprises the embodiment of the present invention.
Fig. 4 is the cut-open view of the fingerprint recognition detection components of one embodiment of the invention.
Fig. 5 is the cut-open view of the fingerprint recognition detection components of another embodiment of the present invention.
Fig. 6 is the cut-open view of the fingerprint recognition detection components of another embodiment of the present invention.
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 present invention by comprehensive and complete, and the design of example embodiment is conveyed to those skilled in the art all sidedly.Identical in the drawings Reference numeral represents same or similar structure.
Described feature or structure can be combined in one or more embodiments in any suitable manner.In the following description, thus provide many details to provide fully understanding embodiments of the present invention.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 etc., also can put into practice technical scheme of the present invention.In other cases, be not shown specifically or describe known configurations or operation to avoid fuzzy the present invention.
Fig. 1 is the sectional view of the fingerprint Identification sensor of the embodiment of the present invention.As shown in Figure 1, fingerprint Identification sensor 1 comprises: substrate 11, fingerprint recognition sensing element 12.
Substrate 111 can be glass substrate, sapphire, or PET, PMMA, PC etc.Substrate 111 also can be for flexible printed circuit board (FPC) substrate, as BT, FR4, FR5 etc.
Fingerprint recognition sensing element 12 is formed in substrate, and ridge and paddy for sensing user finger, identify with the fingerprint to user.
Fig. 2 is the structural representation of the fingerprint recognition sensing element of the embodiment of the present invention.Fingerprint recognition sensing element 12 comprises at least one the first induction electrodes 121, many first drive electrode 122, at least one the second induction electrode 123 and many second drive electrodes 124.
As shown in Figure 2, many first drive electrodes 122 and many second drive electrodes 124 are all set up in parallel and each interval.
In certain embodiments, the spacing d between the spacing d between the first adjacent drive electrode 122 and the second adjacent drive electrode 124 is equal to each other, and the scope of d is at 40 μ m-60 μ m; The width w1 of the width w1 of the first drive electrode 122 and the second drive electrode 124 is equal to each other, and the scope of w1 is at 20 μ m-45 μ m.
Many the second drive electrodes 124 are along the direction setting that is approximately perpendicular to many first drive electrodes 122.Many the first drive electrodes 122 and many second drive electrodes 124 can intersect to be electrically connected to each other between two, also can be non-intersect, and the present invention is not as limit.
When many first drive electrodes 122 and many second drive electrodes 124 intersect while arranging between two, in certain embodiments, can be in being electrically connected to a lead-in wire respectively at joining between two 129, so that the first drive electrode 122 intersecting between two and the second drive electrode 124 share a lead-in wire, thereby reduce number of leads, simplified structure.
The first induction electrode 121 is oppositely arranged with many first drive electrode 122 compartment of terrains, and to define a plurality of the first detector gap g1, the scope of g1 is for example at 20 μ m-40 μ m.
The second induction electrode 123 is along the direction setting that is approximately perpendicular to the first induction electrode 121.Between the first induction electrode 121 and the second induction electrode 123, can intersect to be electrically connected to, also can be non-intersect, the present invention is not as limit.
In Fig. 2, take first induction electrode 121 and second induction electrode 123 is example, when the first induction electrode 121 intersects at the second induction electrode 123, in certain embodiments, can be electrically connected to a lead-in wire in both joining 1210 places, so that both share a lead-in wire, thereby reduce number of leads, simplified structure.
And while comprising many first induction electrodes 121 and/or many second induction electrodes 123, in certain embodiments, parallel to each other and the interval of many first induction electrodes 121 arranges, parallel to each other and the interval of many second induction electrodes 123 arranges, the first induction electrode 121 and the second induction electrode 123 intersect and are electrically connected between two respectively, to share a lead-in wire.
In certain embodiments, the width w2 of the first induction electrode 121 equates with the width w2 of the second induction electrode 123, and the scope of w2 is at 20 μ m-45 μ m.
The second induction electrode 123 is oppositely arranged with many second drive electrode 124 compartment of terrains, and to define a plurality of the second detector gap g2, the scope of g2 is for example at 20 μ m-40 μ m.
The coupling capacitance forming between the first induction electrode 121 and many first drive electrodes 122 can according to fingerprint ridge or fingerprint paddy be positioned at the different changes that there is capacitance detector gap g1 top.This is because the specific inductive capacity of fingerprint ridge 10 to 20 times of air (fingerprint paddy) normally.Therefore, this coupling capacitance under fingerprint ridge than there is larger equivalent capacitance value under fingerprint paddy.By detecting the capacitance variation (or change in voltage) on it of this coupling capacitance, can judge what be positioned at this detector gap g1 top, be fingerprint ridge or fingerprint paddy, thereby obtain fingerprint image.
The second induction electrode 123 is identical with the principle of work between the first induction electrode 121 and many first drive electrodes 122 with the principle of work between many second drive electrodes 124, does not repeat them here.
By the first surveyed area that the first induction electrode 121 and many first drive electrodes 122 are formed, and the second surveyed area of second induction electrode 123 and many second drive electrodes 124, along the vertical both direction setting of cardinal principle each other, make user carry out fingerprint recognition along both direction (as the H direction in Fig. 1 and V direction), convenient for users to use.
Fingerprint Identification sensor 1 also can comprise lead-in wire (not shown), is electrically connected to fingerprint recognition sensing element 12, and for fingerprint recognition sensing element 12 is electrically connected to external circuit, fingerprint recognition chip (not shown) for example.
Fingerprint recognition chip can provide driving signal to drive electrode 122,124 orders, and can detect induced signal by induction electrode 121,123, thus identification fingerprint.But the invention is not restricted to this.
For fingerprint Identification sensor 1 is produced more accurately without distortion fingermark image, the first surveyed area forming at the first above-mentioned induction electrode 121 and many first drive electrodes 122 respectively, and build a pair of line imaging device in the second surveyed area of the second induction electrode 123 and many second drive electrodes 124.
The first surveyed area also comprises: at least one 3rd induction electrodes 125 and many articles of the 3rd drive electrodes 126.
The 3rd induction electrode 125 is with first induction electrode 121 is parallel is set up in parallel, and be positioned at the first induction electrode 121, with many sides that the first drive electrode 122 is contrary.
In certain embodiments, the width w2 of the 3rd induction electrode 125 also equates with the width w2 of the first induction electrode 121, and the scope of w2 is at 20 μ m-45 μ m.
The 3rd induction electrode 125 is oppositely arranged with many articles of the 3rd drive electrode 126 compartment of terrains, and to define a plurality of the 3rd detector gap g3, the scope of g3 is for example at 20 μ m-40 μ m.
Many articles the 3rd drive electrode 126 is positioned at a side the 3rd induction electrode 125, contrary with the first induction electrode 121.
Many articles the 3rd drive electrode 126 is set up in parallel and each interval.In certain embodiments, the spacing d between the 3rd adjacent drive electrode also equals the spacing d between adjacent the first drive electrode 122, and the scope of d is at 40 μ m-60 μ m; The width w1 of the 3rd drive electrode 126 also equals the width w1 of the first drive electrode 122, and the scope of w1 is at 20 μ m-45 μ m.
The second surveyed area also comprises: the 4th induction electrode 127 and many articles of 4 wheel driven moving electrodes 128.
The 4th induction electrode 127 is with second induction electrode 123 is parallel is set up in parallel, and be positioned at the second induction electrode 123, with many sides that the second drive electrode 124 is contrary.
In certain embodiments, the width w2 of the 4th induction electrode 127 also equates with the width w2 of the second induction electrode 123, and the scope of w2 is at 20 μ m-45 μ m.
The 4th induction electrode 127 is oppositely arranged with many articles of 4 wheel driven moving electrode 128 compartment of terrains, and to define a plurality of the 4th detector gap g4, the scope of g4 is for example at 20 μ m-40 μ m.
Many articles 4 wheel driven moving electrode 128 is positioned at a side the 4th induction electrode 127, contrary with the second induction electrode 123.
Many articles 4 wheel driven moving electrode 128 is set up in parallel and each interval.In certain embodiments, the spacing d between adjacent 4 wheel driven moving electrode also equals the spacing d between adjacent the second drive electrode 124, and the scope of d is at 40 μ m-60 μ m; The width w1 of 4 wheel driven moving electrode 128 also equals the width w1 of the second drive electrode 124, and the scope of w1 is at 20 μ m-45 μ m.
Between the first induction electrode 121 and the 3rd induction electrode 125, can be electrically connected to, for example, by lead-in wire, but the present invention is not as limit.
The 3rd induction electrode 125 is along the direction setting that is approximately perpendicular to the 4th induction electrode 127.Between the 3rd induction electrode 125 and the 4th induction electrode 127, can intersect to be electrically connected to, also can be non-intersect, the present invention is not as limit.
When the 3rd induction electrode 125 intersects at the 4th induction electrode 127, in certain embodiments, can be electrically connected to a lead-in wire in both joining 1211 places, so that both share a lead-in wire, thereby reduce number of leads, simplified structure.
It should be noted that, in Fig. 2, be to take one article of the 3rd induction electrode 125 and one article of the 4th induction electrode 127 to describe as example, when comprising many articles of the 3rd induction electrodes 125 and/or many articles of the 4th induction electrodes 127, in certain embodiments, parallel to each other and the interval of many articles of the 3rd induction electrodes 125 arranges, parallel to each other and the interval of many articles of the 4th induction electrodes 127 arranges, and many articles of the 3rd induction electrodes 125 and many articles of the 4th induction electrodes 127 intersect and are electrically connected between two respectively, to share a lead-in wire.
The first induction electrode 121 and the 3rd induction electrode 125 of take in the first surveyed area are example, and the principle of work of two-wire imager is described.Direction when finger is first determined inswept fingerprint the first surveyed area of finger by the first induction electrode 121 or the 3rd induction electrode 125, by comparing the signal intensity of the first induction electrode 121 and the 3rd induction electrode 125, determine again the speed of inswept the first surveyed area of finger, for example by calculating the mistiming of identical fingerprint detection region by the first induction electrode 121 and the 3rd induction electrode 125, obtain the speed of finger, with this, obtain fingermark image more accurately.
Induction electrode 121,123,125 and 127 and the material of drive electrode 122,124,126 and 128 can be identical, also can be different.Form induction electrode 121,123,125 and 127 and the material of drive electrode 122,124,126 and 128 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 invention is not restricted to this.
The fingerprint Identification sensor of the fingerprint recognition sensing element fingerprint recognition sensing element embodiment of the present invention is applicable on any terminal device with fingerprint identification function, such as smart mobile phone, panel computer etc.
Take smart mobile phone as example, and Fig. 3 is the terminal device schematic diagram of the fingerprint Identification sensor that comprises the embodiment of the present invention.This terminal device 100 comprises transparent cover plate 110, and transparent cover plate 110 comprises 111He Fei visible area, visible area 112.Fingerprint Identification sensor can be arranged in Huo Fei visible area, visible area.
Fig. 4 is the cut-open view of the fingerprint recognition detection components of one embodiment of the invention.As shown in Figure 4, fingerprint recognition detection components 2 comprises: substrate 21, fingerprint recognition sensing element 12.
Wherein, fingerprint recognition sensing element 12 is formed on substrate 21, and the fingerprint recognition sensing element 12 in the fingerprint sensor 1 of its structure and the embodiment of the present invention is identical, does not repeat them here.
On substrate 21, be formed with a plurality of through holes 211, in a plurality of through holes 211, be respectively arranged with conductive material, as metal or its combinations such as silver, copper, gold, aluminium.
In certain embodiments, the shape circular of each through hole 211, due in its processing procedure, if the conference of crossing that the diameter of through hole is made causes substrate panel easily to rupture, if and the too small fill process of cannot realizing of diameter, therefore the diameter range of through hole 111 is preferably at 20 μ m-45 μ m, but the present invention is not as limit.When through hole 211 is polygon, its diameter refers to its external diameter of a circle.
Form the manufacturing process of a plurality of through holes 211 on substrate 11 and comprise radium-shine etching technique, chemical etch technique or deep reactive ion etch technology.
The arrangement mode of through hole 211 on substrate 21 can be arranged as a row, also can be arranged as many rows, and the present invention is not as limit.But when through hole 211 is several rows of row, arranging of through hole can be too intensive, easily causes substrate panel breaking, increased the difficulty of manufacturing process, thus the present invention preferably two row arrangement modes.
In certain embodiments, fingerprint recognition sensing element 12 and the corresponding electrical connection one by one of a plurality of through holes 211, can directly be electrically connected to, and also can be electrically connected to by lead-in wire, and the present invention is not as limit.
And in further embodiments, when the first induction electrode 121 and the second induction electrode 123, and/or the first drive electrode 122 and the second drive electrode 124 intersect while being electrically connected between two, and each joining is electrically connected to a through hole 211 respectively, can directly connect, also can be electrically connected to by lead-in wire.
In addition, continue with reference to figure 4, fingerprint recognition detection components 2 also comprises: circuit board 23, articulamentum 24 and protective seam 25.
Circuit board 23 is for example flexible PCB, includes a plurality of conductive interfaces 231 on it, and a plurality of conductive interfaces 231 are electrically connected to a plurality of through holes 211.Circuit board 23 also comprises a plurality of leads 232, and a plurality of conductive interfaces 231 are electrically connected with fingerprint recognition chip (not shown).
Articulamentum 24 for example adopts for example ACF (anisotropic conductive or anisotropic conducting rubber) of conducting resinl, and a plurality of conductive interfaces 231 are electrically connected to a plurality of through holes 211.
Protective seam 25 is formed on fingerprint recognition sensing element 12, so that fingerprint recognition sensing element 12 is protected.Protective seam 25 forms by spraying technology or printing technology, and the material of protective seam 15 comprises diamond-like-carbon (DLC) or light-sensitive emulsion (UV glue).
Fig. 5 is the cut-open view of the fingerprint recognition detection components of another embodiment of the present invention.As shown in Figure 5, fingerprint recognition detection components 3 comprises: substrate 31, fingerprint recognition sensing element 12, side lead-in wire 33, the first lead-in wire 34, the second lead-in wires 35.
Wherein, substrate 31 has first surface a, second b corresponding with first surface and the side c that connects first surface a and second b.
Substrate 31 is such as thinking the materials such as glass or sapphire.
Side lead-in wire 33 is formed at the side c of substrate 31 by sputter or the mode of silk-screen, side lead-in wire 2 connects first surface a and second b of substrate 31.
Fingerprint recognition detecting element 32 is identical with the structure of fingerprint recognition detecting element 12 in fingerprint sensor 1, does not repeat them here.
Fingerprint recognition detecting element 32 and the first lead-in wire 34 are formed at the first surface a of substrate 31 by sputter or the mode of silk-screen, one end of the first lead-in wire 34 connects fingerprint recognition sensing element 12, and the other end connects the first end of side lead-in wire 33.The second lead-in wire 35 is formed at second b of substrate 31 by sputter or the mode of silk-screen, the second lead-in wire 35 connects the second end of side lead-in wire 33.So, by the first lead-in wire 34, side lead-in wire the 33 and second lead-in wire 35, the signal of the fingerprint recognition sensing element 12 of the first surface a of substrate 31 can be transferred to second b of substrate 31 via the side of substrate 31.
In addition, fingerprint recognition detection components 3 also comprises: fingerprint recognition chip 36, protection base 37 and protective seam 38.
Fingerprint recognition chip 36 is positioned at second of substrate 31 substantially, and its installation site can be for example by the mode of flip-chip, to be connected to second b of substrate 31, and fingerprint recognition chip 36 is connected with the second lead-in wire 35.
In order to protect fingerprint recognition chip 36, a protection base 37 can be set on fingerprint recognition chip 36, cover cap fingerprint recognition chip 36.
Protective seam 38 covers fingerprint recognition sensing element 12 and the first lead-in wire 34.The thickness of protective seam 38 can be 50 μ m, but not as limit.The material of protective seam 38 comprises diamond-like-carbon (DLC) or light-sensitive emulsion (UV glue), but the invention is not restricted to this.
Fig. 6 is the cut-open view of the fingerprint recognition detection components of another embodiment of the present invention.As shown in Figure 6, fingerprint recognition detection components 4 comprises: substrate 41, fingerprint recognition sensing element 12, flexible substrate 43 and lead-in wire 44.
Substrate 41 has first surface a, corresponding with first surface second b and connects first surface and the side c of second.Substrate 41 is such as thinking glass or sapphire material etc.
On the first surface a of substrate 41, be also formed with a groove 1a, flexible substrate 43 and fingerprint recognition sensing element 12 are contained in groove 1a, and the side c of substrate 41 is also provided with the groove 1c of an accommodating flexible substrate 43.
The overall height of flexible substrate 43 and fingerprint recognition sensing element 12 can match with the degree of depth of groove 1a, for example: the degree of depth of groove 1a can be 50 μ m, but the present invention is not as limit.In this way, make the integral thickness of substrate 41 after flexible substrate 43 and fingerprint recognition sensing element 12 are installed and length and former substrate 41 basically identical, be beneficial to the slimming of product integral body.Certainly, the second face of substrate 41 also can arrange groove (not shown).
According to different processing procedure requirements, fingerprint recognition sensing element 12 can be formed at upper surface, the lower surface (being clipped between substrate 41 and flexible substrate 43) that substrate 41 has the flexible substrate 43 on first surface a or the centre that is formed at flexible substrate 43 (fingerprint recognition sensing element 12 is integrated with flexible substrate 43) etc., and the present invention is not as limit.
Flexible substrate 43 is arranged on the first surface of substrate 41, and bends second that extends to second of substrate 41 and be covered at least in part substrate 41 along the side of substrate 41.Establish in reeded embodiment first surface and side at substrate 41, and flexible substrate 43 is placed in this groove.Between the first surface a of flexible substrate 43 and substrate 41, be provided with the first bonding coat 411, so that flexible substrate 43 is adhesively fixed in the first surface of substrate 41 or the groove of first surface.Between flexible substrate 43 and second of substrate 41, be provided with the second bonding coat 412.
Flexible substrate 43 in the present embodiment is flexible PCB or polyethylene terephthalate (PET, Polyethylene terephthalate), but the present invention is not as limit.
Fingerprint recognition sensing element 12 is identical with the structure of fingerprint recognition detecting element 12 in fingerprint sensor 1, does not repeat them here.
Fingerprint recognition sensing element 12 is positioned at the first surface of substrate 41, is arranged in flexible substrate 43.For example, flexible substrate 43 is provided with embossed layer (not shown), and embossed layer surface is formed with groove, and fingerprint recognition sensing element 12 is arranged in the groove of flexible substrate 43.
Fingerprint recognition sensing element 12 can be formed in flexible substrate 43 by the mode of sputter, evaporation or wire mark.
In addition, fingerprint recognition detection components 4 also comprises: fingerprint recognition chip 45, protection base 46 and protective seam 47.
Lead-in wire 44 is arranged in flexible substrate 43, one end of lead-in wire 44 is electrically connected to fingerprint recognition sensing element 12, the other end extends to second of substrate 41, and the signal that is about to fingerprint recognition sensing element 12 is transferred to the fingerprint recognition chip 45 of second b of substrate 41 from the first surface a of substrate 41.Lead-in wire 44 also can be formed in flexible substrate 43 by sputter or the mode of silk-screen.
Fingerprint recognition chip 45 is positioned at second of substrate 41 substantially, its position can be for example by the mode of flip-chip, to be connected to the flexible substrate 43 of second b of substrate 41, or the mode of welding by projection is connected to flexible substrate 43, and between fingerprint recognition chip 45 and flexible substrate 43, be filled with filling glue 48.
In order to protect fingerprint recognition chip 45, a protection base 46 can be set on fingerprint recognition chip 45, cover cap fingerprint recognition chip 45.
Protective seam 47 covers the flexible substrate 43 of the first surface a of fingerprint recognition sensing element 12 and substrate 41, the fingerprint recognition sensing element 12 that adequately protects easy to wear and flexible substrate 43.
The thickness of protective seam 47 can be 50 μ m, but the present invention is not as limit.
The material of protective seam 47 comprises diamond-like-carbon (DLC) or light-sensitive emulsion (UV glue), but not as limit.
Above-mentioned fingerprint recognition detection components 2,3,4 can be applicable to have in the terminal device of fingerprint identification function, and terminal device is such as being smart mobile phone, panel computer etc.Above-mentioned fingerprint recognition detection components 2,3, substrate 21 in 4,31,41 is for example the transparent cover plate of terminal device, by fingerprint recognition sensing element is formed on the transparent cover plate of terminal device, dwindled the distance of fingerprint recognition sensing element and finger print face, fingerprint recognition result more accurately can be provided.
The fingerprint Identification sensor of the embodiment of the present invention or fingerprint recognition detection components, by the fingerprint recognition sensing element that can be used for scanning fingerprint pattern is set respectively on both direction, realized the fingerprint detection function on both direction, convenient for users to use.
Below illustrate particularly and described illustrative embodiments of the present invention.Should be appreciated that, the invention is not restricted to disclosed embodiment, on the contrary, the invention is intended to contain the various modifications and the equivalent replacement that comprise within the scope of the appended claims.
Claims (18)
1. a fingerprint Identification sensor, is characterized in that, comprising:
Substrate; And,
Fingerprint recognition sensing element, it is formed in described substrate, comprising:
At least one the first induction electrode;
Some the first drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the first induction electrode compartment of terrain, to define a plurality of the first detector gap;
At least one the second induction electrode, itself and the substantially vertical setting of described at least one the first induction electrode;
Some the second drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the second induction electrode compartment of terrain, to define a plurality of the second detector gap; Described some the second drive electrodes with described some the first drive electrodes along substantially vertical both direction setting each other;
At least one the 3rd induction electrode, it is parallel with described at least one the first induction electrode and be set up in parallel, and is positioned at a side described at least one the first induction electrode, contrary with described some the first drive electrodes; And,
Some the 3rd drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 3rd induction electrode compartment of terrain, to define a plurality of the 3rd detector gap; Described some the 3rd drive electrodes are positioned at a side described at least one the 3rd induction electrode, contrary with described at least one the first induction electrode.
2. fingerprint Identification sensor according to claim 1, it is characterized in that, also comprise: at least one the 4th induction electrode, it is parallel with described at least one the second induction electrode and be set up in parallel, be positioned at a side described at least one the second induction electrode, contrary with described some the second drive electrodes, and with the substantially vertical setting of described at least one the 3rd induction electrode; And, some 4 wheel driven moving electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 4th induction electrode compartment of terrain, to define a plurality of the 4th detector gap; Described some 4 wheel driven moving electrodes are positioned at a side described at least one the 4th induction electrode, contrary with described at least one the second induction electrode.
3. fingerprint Identification sensor according to claim 1, is characterized in that, described at least one the first induction electrode intersects and is electrically connected between two with described at least one the second induction electrode; And/or described some the first drive electrodes intersect and are electrically connected between two with described some the second drive electrodes.
4. fingerprint Identification sensor according to claim 1 and 2, is characterized in that, described some the first drive electrodes and the equal spaced set of described some the 3rd drive electrodes, and its spacing scope is within the scope of 40 μ m-60 μ m; The width of the width of described some the first drive electrodes and described some the 3rd drive electrodes is equal to each other, and its width range is in 20 μ m-45 μ m; The size of described a plurality of the first detector gap and the size of described a plurality of the 3rd detector gap are equal to each other, and its interstice coverage is in 20 μ m-40 μ m; The width of the width of described at least one the first induction electrode and described at least one the 3rd induction electrode equates, and its width range is in 20 μ m-45 μ m.
5. fingerprint Identification sensor according to claim 2, is characterized in that, described at least one the 3rd induction electrode intersects and is electrically connected between two with described at least one the 4th induction electrode.
6. fingerprint Identification sensor according to claim 2, is characterized in that, described some the second drive electrodes and the equal spaced set of described some 4 wheel driven moving electrodes, and its spacing scope is within the scope of 40 μ m-60 μ m; The width of described some the second drive electrodes and the width of described some 4 wheel driven moving electrodes are equal to each other, and its width range is in 20 μ m-45 μ m; The size of described a plurality of the second detector gap and the size of described a plurality of the 4th detector gap are equal to each other, and its interstice coverage is in 20 μ m-40 μ m; The width of the width of described at least one the second induction electrode and described at least one the 4th induction electrode equates, and its width range is in 20 μ m-45 μ m.
7. a terminal device, is characterized in that, comprises according to the fingerprint Identification sensor described in claim 1-6 any one.
8. for a fingerprint recognition detection components for terminal device, it is characterized in that, comprising: fingerprint recognition sensing element, it is formed on the transparent cover plate of described terminal device, comprising:
At least one the first induction electrode;
Some the first drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the first induction electrode compartment of terrain, to define a plurality of the first detector gap;
At least one the second induction electrode, itself and the substantially vertical setting of described at least one the first induction electrode;
Some the second drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the second induction electrode compartment of terrain, to define a plurality of the second detector gap; Described some the second drive electrodes with described some the first drive electrodes along substantially vertical both direction setting each other;
At least one the 3rd induction electrode, it is parallel with described at least one the first induction electrode and be set up in parallel, and is positioned at a side described at least one the first induction electrode, contrary with described some the first drive electrodes; And,
Some the 3rd drive electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 3rd induction electrode compartment of terrain, to define a plurality of the 3rd detector gap; Described some the 3rd drive electrodes are positioned at a side described at least one the 3rd induction electrode, contrary with described at least one the first induction electrode.
9. fingerprint recognition detection components according to claim 8, it is characterized in that, also comprise: at least one the 4th induction electrode, it is parallel with described at least one the second induction electrode and be set up in parallel, be positioned at a side described at least one the second induction electrode, contrary with described some the second drive electrodes, and with the substantially vertical setting of described at least one the 3rd induction electrode; And, some 4 wheel driven moving electrodes, it is set up in parallel and each interval, and is oppositely arranged with described at least one the 4th induction electrode compartment of terrain, to define a plurality of the 4th detector gap; Described some 4 wheel driven moving electrodes are positioned at a side described at least one the 4th induction electrode, contrary with described at least one the second induction electrode.
10. fingerprint recognition detection components according to claim 8, is characterized in that, described at least the first induction electrode intersects and is electrically connected between two with described at least one the second induction electrode.
11. fingerprint recognition detection components according to claim 9, is characterized in that, described at least one the 3rd induction electrode intersects and is electrically connected to described at least one the 3rd induction electrode.
12. fingerprint recognition detection components according to claim 8 or claim 9, is characterized in that, are formed with a plurality of through holes on the transparent cover plate of described terminal device, in described a plurality of through holes, are provided with conductive material; Described fingerprint recognition sensing element is electrically connected to described a plurality of through holes.
13. fingerprint recognition detection components according to claim 8 or claim 9, is characterized in that, also comprise: side lead-in wire, the first lead-in wire and the second lead-in wire; Wherein,
The transparent cover plate of described terminal device have first surface, with second of the corresponding setting of described first surface and connect described first surface and the side of second;
Described side lead-in wire is arranged at described side;
Described fingerprint recognition sensing element is arranged at described first surface;
Described the first lead-in wire is arranged at described first surface, and one end of described the first lead-in wire is electrically connected to described fingerprint recognition sensing element, and the other end connects described side lead-in wire; And,
Described the second lead-in wire is arranged at described second, and one end of described the second lead-in wire is electrically connected to described side lead-in wire.
14. fingerprint recognition detection components according to claim 8 or claim 9, is characterized in that, also comprise: flexible substrate and lead-in wire; Wherein,
The transparent cover plate of described terminal device have first surface, with second of the corresponding setting of described first surface and connect described first surface and the side of second;
Described flexible substrate is arranged on described first surface, and extends to described second along the bending of described side, and is covered at least in part described second;
Described fingerprint recognition sensing element is arranged in described flexible substrate, and is positioned at described first surface; And
Described lead-in wire is arranged in described flexible substrate, and one end of described lead-in wire is electrically connected to described fingerprint recognition sensing element, and the other end extends to described second.
15. fingerprint recognition detection components according to claim 8 or claim 9, is characterized in that, described fingerprint recognition sensing element is formed on the transparent cover plate of described terminal device by sputter, evaporation or wire mark.
16. fingerprint recognition detection components according to claim 8 or claim 9, is characterized in that, also comprise the protective seam being formed on described fingerprint recognition sensing element.
17. 1 kinds of terminal devices, is characterized in that, comprise the fingerprint recognition detection components described according to Claim 8-16 any one.
18. terminal devices according to claim 17, is characterized in that, the transparent cover plate of described terminal comprises He Fei visible area, visible area, and the fingerprint recognition sensing element in described fingerprint recognition detection components is formed at described non-visible area.
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| CN201410313087.8A CN104077573B (en) | 2014-07-02 | 2014-07-02 | Fingerprint Identification sensor, fingerprint recognition detection components and terminal device |
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Address after: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: Ophiguang Group Co.,Ltd. Patentee after: SUZHOU OFILM TECH Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: OFilm Microelectronics Technology Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: OFilm Tech Co.,Ltd. Patentee before: SUZHOU OFILM TECH Co.,Ltd. Address after: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee after: OFilm Microelectronics Technology Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: OFilm Tech Co.,Ltd. Patentee after: SUZHOU OFILM TECH Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: Shenzhen OFilm Tech Co.,Ltd. Patentee before: SUZHOU OFILM TECH Co.,Ltd. |
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Effective date of registration: 20210727 Address after: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: Jiangxi OMS Microelectronics Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: Ophiguang Group Co.,Ltd. Patentee before: SUZHOU OFILM TECH Co.,Ltd. |
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Granted publication date: 20180928 |