CN106156716A - Fingerprint recognition system and forming method thereof - Google Patents
Fingerprint recognition system and forming method thereof Download PDFInfo
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- CN106156716A CN106156716A CN201510203658.7A CN201510203658A CN106156716A CN 106156716 A CN106156716 A CN 106156716A CN 201510203658 A CN201510203658 A CN 201510203658A CN 106156716 A CN106156716 A CN 106156716A
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- plate
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- blind hole
- identification unit
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Abstract
The present invention provides a kind of fingerprint recognition system and forming method thereof.On the first surface of the glass cover-plate of fingerprint recognition system or second surface, offer blind hole with corresponding position, described finger touch region, for making the glass cover-plate thickness less than other regions for the glass cover-plate thickness at described finger touch region, thus the glass cover-plate thickness at thinning described finger touch region, reduce the glass cover-plate thickness between described finger touch region and Fingerprint Identification Unit.After reducing the glass cover-plate thickness between described finger touch region and Fingerprint Identification Unit, during fingerprint recognition system uses, the light being sent by Fingerprint Identification Unit can be reduced, and the light being sent by Fingerprint Identification Unit encounter on finger touch region finger print face after the light that the turns back scattering phenomenon in glass cover-plate, thus improve the degree of accuracy of the optical signal that Fingerprint Identification Unit gathers, to improve the precision of described Fingerprint Identification Unit identification fingerprint.
Description
Technical field
The present invention relates to sensor field, be specifically related to a kind of fingerprint recognition system and forming method thereof.
Background technology
Fingerprint imaging identification technology, is a kind of fingerprint image being collected human body by Fingerprint Identification Unit, so
Compare with the existing fingerprint imaging information in system afterwards, by correct judgment whether to realize that identity is known
Other technology.
Based on the convenience of the uniqueness of somatic fingerprint and use, fingerprint identification technology has been widely used in
The safe examination system such as public security bureau and customs, the gate control system of building, and the consumption neck such as PC and mobile phone
The various fields such as territory.
And, the lighting in order to adapt to electronic product develops, and uses the touch fingerprint of capacitance principle to know
Other device gradually replaces the Fingerprint Identification Unit by camera lens and prism composite structure for the traditional type.To reduce fingerprint recognition
The volume of device, realizes the lightening of Fingerprint Identification Unit further, in order to carries and is arranged on mobile device
In.
Fig. 1 and Fig. 2 is the structural representation of touch Fingerprint Identification Unit, and wherein Fig. 2 is along A-A ' side in Fig. 1
To cross-sectional view.Described touch sensor includes:
Sensor 13, is positioned at the light guide plate below described sensor 13 and the 14th, is arranged on described light guide plate 14
Light-Emitting Diode 11, and with described sensor 13 be electrically connected with chip 10 and be positioned at described sensor
Cover sheet 12 above in the of 13.
During use, being touched described cover sheet 12 surface by finger, the light that Light-Emitting Diode 11 sends passes through
After light guide plate 14, pass through described cover sheet 12, and cover on described cover sheet 12 surface in touching
Turn back behind the fingerprint face of finger；Pixel cell (not shown) in described sensor 13 receives and turns back
After optical signal after, optical signal transfers the signal of telecommunication (opto-electronic conversion) to, transmits the signal of telecommunication to chip afterwards
In 10, chip 10 is formed finger print information according to the signal of telecommunication obtaining.
The sensitivity of touch Fingerprint Identification Unit is strong, high for fingerprint recognition accuracy.In order to avoid using
During dust etc. use environment to affect for the sensitivity of touch Fingerprint Identification Unit, injecting hand
In the electronics such as machine, touch Fingerprint Identification Unit is often arranged under the glass cover-plate of the electronic products such as mobile phone
Side, to improve dust tightness, the water proofing property of mobile phone products, to optimize touch Fingerprint Identification Unit further
Can, improve the appearance looks elegant degree of the electronic products such as mobile phone simultaneously.
Even if so, after being arranged on electronic product, the sensitivity of touch Fingerprint Identification Unit is still
By stronger interference.To this end, how improving sensitivity when touch Fingerprint Identification Unit uses is ability
The problem that field technique personnel need solution badly.
Content of the invention
The problem that the present invention solves provides a kind of fingerprint recognition system and forming method thereof, to improve touch
Fingerprint Identification Unit be arranged on electronic product after sensitivity.
For solving the problems referred to above, the present invention provides a kind of fingerprint recognition system, comprising:
Glass cover-plate, including first surface and the second surface relative with first surface, described first surface
Including finger touch region；
Fingerprint Identification Unit, is arranged on the second surface of described glass cover-plate, and with described finger touch district
Territory is corresponding, for obtaining the finger print information of finger in described finger touch region；
On the first surface or second surface of described glass cover-plate, right with described finger touch region
Position is answered to offer blind hole, for making the glass cover-plate thickness at described finger touch region be less than other
The glass cover-plate thickness in region.
Alternatively, the thickness of the glass cover-plate of described blind via bottom is 0.14～0.5 millimeter.
Alternatively, described blind hole is positioned at described second surface.
Alternatively, described Fingerprint Identification Unit is arranged in described blind hole.
Alternatively, described Fingerprint Identification Unit includes:
Cover sheet；
Sensor, is positioned at below described cover sheet, and fixing with described cover sheet is connected, described biography
Sensor is used for obtaining fingerprint signal；
Light emitting module, is used for providing light source；
Chip, is electrically connected with described sensor, for processing the fingerprint signal that sensor obtains, with shape
Become finger print information；
The second surface of the surface of described cover sheet and described glass cover-plate is fixing to be connected, is used for described
Fingerprint Identification Unit is arranged on described glass cover-plate.
Alternatively, described cover sheet is fixed in described blind hole.
Alternatively, described blind hole is arranged at described first surface and is positioned at described finger touch region.
Alternatively, the edge of described blind hole openend is arcuate structure.
Alternatively, the sidewall of described blind hole is perpendicular to the bottom of described blind hole.
Alternatively, the angle between the sidewall of described blind hole and bottom is more than 90 degree.
Alternatively, it between the sidewall of described blind hole and bottom is the transition of arc limit.
Alternatively, it between the sidewall of described blind hole and bottom is hypotenuse transition.
Alternatively, described Fingerprint Identification Unit is sticked on the second surface of described glass cover-plate by glue.
Alternatively, the roughness of described blind via bottom is less than or equal to 3.2 μm.
Alternatively, the quantity of described blind hole is two, is respectively arranged at the first surface of described glass cover-plate
With on second surface and corresponding with the position in described finger touch region.
Alternatively, fingerprint recognition system also includes shell；
Described Fingerprint Identification Unit is arranged in described shell；
Described glass cover-plate is installed on the housing, for being sealed in Fingerprint Identification Unit in described shell.
Present invention also offers the forming method of a kind of fingerprint recognition system, comprising:
There is provided glass cover-plate, described glass cover-plate includes first surface and relative with described first surface the
Two surfaces；
Thermoplastic process is carried out to described glass cover-plate；
There is provided mould, described mould includes drift, with the institute after the heated sofening treatment of described punch
State first surface or the second surface of glass cover-plate, in described glass cover-plate, form blind hole；Described glass
On the first surface of glass cover plate, corresponding position forms finger touch region with described blind hole；
Fingerprint Identification Unit is provided, described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate,
And make described Fingerprint Identification Unit corresponding with described blind hole position.
Alternatively, the step carrying out thermoplastic process to described glass cover-plate includes: control is heated
Temperature for exceeding glass cover-plate softening point 50～80 DEG C, continuous heating process 20～40min.
Alternatively, the temperature of described heating is 900～1000 DEG C.
Alternatively, first surface or the second surface with glass cover-plate described in described punch, in institute
State and form the step of blind hole in glass cover-plate and include: make the described blind via bottom remaining glass cover-plate thickness be
0.14～0.5 millimeter.
Alternatively, first surface or the second surface with glass cover-plate described in described punch, in institute
The step forming blind hole in stating glass cover-plate includes: be respectively formed one at described first surface and second surface
Blind hole, and described first surface is corresponding with the two of second surface blind hole positions.
Alternatively, after forming described blind hole, before providing described Fingerprint Identification Unit, described forming method is also
Including:
Remove described drift, described glass cover-plate is made annealing treatment；
After the annealing process, rigidifying process is carried out to described glass cover-plate.
Alternatively, the step of described annealing includes: control temperature is 600～700 DEG C, persistently anneals
120～170 hours.
Alternatively, the step that described rigidifying is processed includes: the temperature that control rigidifying is processed is 400～650 DEG C.
Alternatively, after described annealing, before rigidifying is processed, described forming method also includes: pass through
Finishing carries out smooth treatment to described glass cover-plate.
Alternatively, described Fingerprint Identification Unit is arranged on the step bag on the second surface of described glass cover-plate
Include: use glue that described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate.
Alternatively, first surface or the second surface with glass cover-plate described in described punch, in institute
The step forming blind hole in stating glass cover-plate includes: form described blind hole on described second surface；
The step that described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate is included: by institute
State in the blind hole that Fingerprint Identification Unit is arranged on described second surface.
Alternatively, first surface or the second surface with glass cover-plate described in described punch, in institute
The step forming blind hole in stating glass cover-plate includes: form described blind hole on the first surface；
The step that described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate is included: by institute
State Fingerprint Identification Unit to install on second surface, and described Fingerprint Identification Unit is corresponding with described blind hole position.
Compared with prior art, technical scheme has the advantage that
On the first surface of the glass cover-plate of fingerprint recognition system or second surface, with described finger touch district
Corresponding position, territory offers blind hole, with the glass cover-plate thickness at thinning described finger touch region, makes
Glass cover-plate thickness at described finger touch region is less than the glass cover-plate thickness in other regions, thus subtracts
Glass cover-plate thickness between little described finger touch region and Fingerprint Identification Unit.Reduce described finger touch
After glass cover-plate thickness between region and Fingerprint Identification Unit, during fingerprint recognition system uses, can subtract
The little light being sent by Fingerprint Identification Unit, and the light being sent by Fingerprint Identification Unit encounters on finger touch region
Finger print face after the light that the turns back scattering phenomenon in glass cover-plate, thus improve Fingerprint Identification Unit
The degree of accuracy of the optical signal gathering, to improve the precision of described Fingerprint Identification Unit identification fingerprint.
Still optionally further, described Fingerprint Identification Unit sticks on the second surface of glass cover-plate by glue,
Make glue can the pit of filling glass cover plate second surface, to improve Fingerprint Identification Unit with glass cover-plate even
The flatness in border face, reduces light and passes through glass cover-plate, and the company of glass cover-plate and Fingerprint Identification Unit
Diffusion phenomenon during border face, to improve the degree of accuracy of the optical signal that Fingerprint Identification Unit receives.
In the forming method identifying identification system, first pass through and glass cover-plate carried out thermoplastic process,
Afterwards again with the punch glass cover-plate of mould thus on glass cover-plate, form blind hole, at glass cover-plate
Toughness and the plastic deformation ability of glass cover-plate can be increased, when reducing with punch glass cover-plate after softening
Formed and the stress in glass cover-plate, it is to avoid glass cover-plate fragmentation.
Still optionally further, after glass cover-plate forming blind hole, glass cover-plate is made annealing treatment, institute
State annealing can reduce glass cover-plate with punch glass cover-plate to form the formation during blind hole
Thermal stress in glass cover-plate, improves the stability of glass cover-plate；After described annealing, then enter
Row rigidifying process, adjusts the internal stress substep in glass cover-plate, to improve the intensity of glass cover-plate.
Brief description
Fig. 1 and Fig. 2 is the structural representation of existing touch Fingerprint Identification Unit；
Fig. 3 to Fig. 8 is the structural representation of the fingerprint recognition system of the embodiment of the present invention 1；
Fig. 9 and Figure 10 is the structural representation of another kind of glass cover-plate in fingerprint recognition system of the present invention；
Figure 11 is the structural representation of another glass cover-plate in fingerprint recognition system of the present invention；
Figure 12 and Figure 13 is the structural representation of the fingerprint recognition system of the embodiment of the present invention 2；
Figure 14 and Figure 15 is the structural representation of the fingerprint recognition system of the embodiment of the present invention 3；
Figure 16 be fingerprint recognition system of the present invention each step of forming method one embodiment in the knot of glass cover-plate
Structure schematic diagram.
Detailed description of the invention
Fingerprint Identification Unit is widely used in the electronic applications of mobile phone, PC, and in order to reduce ash
The environmental factors such as dirt are disturbed for the sensitivity of Fingerprint Identification Unit, mostly by Fingerprint Identification Unit in prior art
It is arranged on below the glass cover-plate of mobile phone, to improve the sensitivity of Fingerprint Identification Unit.
But the sensitivity of the Fingerprint Identification Unit being arranged on the electronic products such as mobile phone by above-mentioned technology is still subject to
To compared with strong jamming, reduce the finger print information that subsequent fingerprint identifier obtains.Analyze its reason to find:
In the course of work after being arranged on Fingerprint Identification Unit on the electronic products such as mobile phone, Fingerprint Identification Unit
The glass cover-plate of the light penetration mobile phone that interior light emitting module (including the structures such as light emitting diode) sends,
And turn back after touching the fingerprint face on glass cover-plate of covering, and the light after turning back is based on concavo-convex on fingerprint face
The intensity of the angle of refraction and the light reflecting back on uneven strain line, and light and shade changes, i.e.
Can be understood as the light after turning back and carry the information in fingerprint face；Sensor in Fingerprint Identification Unit receives
Light after turning back is as optical signal, and is converted to the signal of telecommunication by optical signal, transmits the signal of telecommunication more afterwards
To chip to form finger print information.That is, sensor receives through the light of mobile phone glass cover plate, as rear
The continuous basis forming finger print information, the light quality that sensor receives directly affects the fingerprint letter being subsequently formed
The accuracy of breath.
But during light passes through glass cover-plate, inevitably there is diffusion phenomenon, thus affect
The energy of the light after turning back, and light and shade all occurs to change in various degree, i.e. have impact on the light after turning back
The degree of accuracy of the information in the fingerprint face entrained by line；And, the thickness of glass cover-plate is bigger, overflowing of light
Penetrating phenomenon more serious, the degree of accuracy interference for the information in the fingerprint face entrained by the light after turning back is bigger.
Thus the finger print information degree of accuracy that impact is subsequently formed, i.e. reduce the sensitivity of Fingerprint Identification Unit.
To this end, the present invention provides a kind of fingerprint recognition system and forming method thereof.Described fingerprint recognition system
Including:
Glass cover-plate, including first surface and the second surface relative with first surface, described first surface
Including finger touch region；
Fingerprint Identification Unit, is arranged on the second surface of described glass cover-plate, and with described finger touch district
Territory is corresponding, for obtaining the finger print information of finger in described finger touch region；
On the first surface or second surface of described glass cover-plate, right with described finger touch region
Position is answered to offer blind hole, for making the glass cover-plate thickness at described finger touch region be less than other
The glass cover-plate thickness in region.
It by described glass cover-plate, is positioned at and offers blind hole at finger touch region, to reduce described hand
Refer to the glass cover-plate thickness between touch area and Fingerprint Identification Unit, thus make in fingerprint recognition system used
Cheng Zhong, reduces the light being sent by Fingerprint Identification Unit, and the light being sent by Fingerprint Identification Unit is encountered finger and touched
The light that the turns back scattering phenomenon in glass cover-plate behind finger print face on control region, and then improve and refer to
The degree of accuracy of the optical signal that line identifier gathers, to improve the precision of described Fingerprint Identification Unit identification fingerprint.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The specific embodiment of the present invention is described in detail.
Embodiment 1
Accompanying drawing 3 to Fig. 8 is the structural representation of the embodiment of the present invention 1 fingerprint recognition system.
First combining with reference to Fig. 3 and Fig. 4, wherein Fig. 4 is to show along B-B ' to the partial structurtes of section in Fig. 3
It is intended to.
In the present embodiment, described fingerprint recognition system is in mobile phone.Described fingerprint recognition system includes:
Glass cover-plate 40, described glass cover-plate 40 includes first surface 41 and relative with first surface 41
Second surface 42.
Alternatively, described fingerprint recognition system also includes shell 30, and described glass cover-plate 40 is arranged on described
On shell, for being sealed in described Fingerprint Identification Unit in described shell 30.
In the present embodiment, described glass cover-plate 40 is the glass cover-plate as handset touch panel, described shell
30 is phone housing, the touch-surface that described first surface 41 is mobile phone.
It should be noted that in other embodiments in addition to the present embodiment, described fingerprint recognition system also may be used
Being applied to the field such as computer, gate control system, the purposes to described fingerprint recognition system for the present invention does not limit
Fixed.
Described fingerprint recognition system also includes Fingerprint Identification Unit 20, is used for obtaining in described finger touch region
The finger print information of finger.Described Fingerprint Identification Unit 20 is arranged in described shell 30, and is arranged on described
On the second surface 42 of glass cover-plate 40.
Described Fingerprint Identification Unit 20 is arranged in phone housing, and is placed in below the touch-screen of mobile phone, can have
Effect promotes the effects such as the dust and water protection of described Fingerprint Identification Unit 20, improves the aesthetic property of mobile phone simultaneously.
In the present embodiment, the thickness of described glass cover-plate 40 is 0.55 millimeter (mm) left and right, thus really
Protect described glass cover-plate 40 and there is enough mechanical strengths and toughness, thus protect the structure of interior of mobile phone.
In conjunction with reference to Fig. 5, Fig. 5 is the structural representation of glass cover-plate in Fig. 4.
First surface 41 at described glass cover-plate 40 includes finger touch region 411, is used for placing finger
50.On the second surface 42 of described glass cover-plate 40, position corresponding with described finger touch region 411
The place of putting offers blind hole 430, makes, at finger touch region 411, to offer the glass cover of blind hole 430 part
The thickness of plate 40 is less than glass cover-plate 40 thickness in other regions.
In the present embodiment, described Fingerprint Identification Unit 20 is arranged in described blind hole 430, described blind hole 430
Reduce between the finger touch region 411 on described glass cover-plate 40 and described Fingerprint Identification Unit 20
The thickness of glass cover-plate 40, thus in use, reduce the light being sent by Fingerprint Identification Unit 20,
And the light being sent by Fingerprint Identification Unit 20 encounters the fingerprint face of the finger 50 on finger touch region 411
After the light that the turns back diffusion phenomenon in glass cover-plate 40, thus improve what Fingerprint Identification Unit 20 gathered
The degree of accuracy of optical signal, to improve the precision of described Fingerprint Identification Unit identification fingerprint.
If the thickness h 1 of the glass cover-plate 40 bottom described blind hole 430 is too small, cause glass cover-plate 40 mistake
Thin, poor impact resistance, it is easily broken；If the thickness h 1 of the glass cover-plate 40 bottom blind hole 430 is excessive,
Cause glass cover-plate 40 blocked up, cause diffusion phenomenon in cover-plate glass 40 for the light excessive, reduce institute
State the optical signal that Fingerprint Identification Unit 20 gathers.
In the present embodiment, the thickness h 1 of the glass cover-plate 40 bottom described blind hole 430 is 0.14～0.5mm,
To guarantee that glass cover-plate 40 has sufficient mechanical strength simultaneously, improve the light letter that Fingerprint Identification Unit 20 gathers
Number intensity.
Referring again to Fig. 3 and Fig. 4, in the present embodiment, the structure of described Fingerprint Identification Unit 20 includes:.
Cover sheet 21.
In the present embodiment, described cover sheet 21 is glass cover-plate, but in other embodiments, described guarantor
Protecting cover plate 21 can be also sapphire plate, or is the good transparent plastic sheet of light transmission.
Sensor 22, is positioned at below described cover sheet 21, and described sensor 22 is used for obtaining fingerprint letter
Number.Multiple pixel cell (not shown) that described sensor 22 includes, for receiving through institute
State the light of cover sheet 21, and the optical signal of reception is converted into the signal of telecommunication, it is achieved opto-electronic conversion.
In the present embodiment, the upper surface of described sensor 22 is fixed on described cover sheet 21 by glue
Lower surface.
Chip 25, is electrically connected with described sensor 22, for processing the fingerprint letter that sensor 22 obtains
Number, to form finger print information.
Light emitting module, is used for providing light source.
In the present embodiment, described light emitting module is positioned at below described sensor 22, is i.e. positioned at described sensor
One side of 22 described cover sheets 21 dorsad.During use, the light that described light emitting module provides passes through
Cover sheet 21, and touch the finger of finger 50 in finger touch area 411 on described glass cover-plate 40
Line turns back behind face, in the pixel cell in the light transmission after turning back to sensor 22, and is converted into electricity
Signal.
In the present embodiment, described light emitting module specifically includes light emitting diode 231 and light guide plate 232.
In the present embodiment, the upper surface of described light guide plate 232 is towards the lower surface of described sensor 22, institute
State light emitting diode 231 and can be located at the side of described light guide plate 232, or be positioned at described light guide plate 232
Lower section, or be to embed in described light guide plate 232.
During use, described light emitting diode 231 provides light, and after described light guide plate 232 homogenization,
Through described sensor the 22nd, cover sheet 21, and after glass cover-plate 40, directive is by described glass
The fingerprint face of the finger 50 on cover plate 40 first surface 41.Thus improve the light of finger 50 described in directive
The uniformity of line, and then improve the uniformity of the optical signal that follow-up described sensor 22 receives.
Alternatively, the lower surface at described light guide plate 232, i.e. described light guide plate 232 described sensing dorsad
The surface of device 22 is provided with reflector plate (not shown).During use, at described light emitting diode
231 light producing touch after described reflector plate turns back, can light guide plate 232 described in directive, thus improve by
The light intensity derived in light guide plate 232, and then improve the follow-up optical signal turning back in described sensor 22.
Additionally, described Fingerprint Identification Unit 20 also includes the circuit board (figure being laid with the circuit of fingerprint recognition system
In do not show) etc. structure.Described circuit board and light emitting module, sensor the 22nd, chip 25 is electrically connected with,
Thus provide power supply signal to each parts of described Fingerprint Identification Unit 20, and realize that described fingerprint recognition system obtains
The transmission of the finger print information taking.The structure of described circuit board is same as the prior art, does not repeats them here.
In the present embodiment, the cover sheet 21 of described Fingerprint Identification Unit 20 embeds described glass cover-plate 40
In described blind hole 430, thus described Fingerprint Identification Unit 20 is fixed on the second of described glass cover-plate 40
On surface 42.
During use, when the light sending in Fingerprint Identification Unit 20 pass through described glass cover-plate 40 and
Diffusion phenomenon is there will be, the optical signal that diffusion phenomenon receives for Fingerprint Identification Unit 20 during cover sheet 21
Interfere.If it is more serious (i.e. with the concavo-convex phenomenon on cover sheet 21 surface to improve described glass cover-plate 40
Flatness is poorer) the diffusion phenomenon of light is more serious.
In alternative, the roughness bottom described glass cover-plate 40 blind hole 230 is micro-less than or equal to 3.2
Rice (μm), to reduce light through diffusion phenomenon during described glass cover-plate 40.
Still optionally further, with reference to Fig. 8, the cover sheet 21 of described Fingerprint Identification Unit 20 passes through transparent adhesive tape
The bottom of the blind hole 430 at described glass cover-plate 40 for the water adhesion.
In conjunction with reference to Fig. 6～Fig. 7, wherein Fig. 6 is in the present embodiment, blind hole 430 in glass cover-plate 40
Bottom structural representation, wherein Fig. 7 be in Fig. 6 along C-C ' to section partial schematic diagram.
In Fig. 6 and Fig. 7, bottom the blind hole 430 of described glass cover-plate 40, there is obvious concaveconvex structure.
In conjunction with reference to Fig. 8, the upper surface of the cover sheet 21 of described Fingerprint Identification Unit 20 coats transparent glue
50, and after being sticked to described Fingerprint Identification Unit 20 on glass cover-plate 40 by transparent glue 50.Transparent
Glue 50 and the refractive index close of glass, have preferable light transmission, and described transparent glue 50 can be filled out
Fill the pit of glass cover-plate 40 second surface, thus Fingerprint Identification Unit 20 can be improved with glass cover-plate 40 even
The flatness in border face, reduces light and passes through glass cover-plate 40, cover sheet 21 and glass cover-plate 40
With the diffusion phenomenon during linkage interface of cover sheet 21, to improve the light letter that Fingerprint Identification Unit receives 20
Number the degree of accuracy.
Referring again to Fig. 5, in the present embodiment, the sidewall 4301 of described blind hole 430 is perpendicular to described blind hole
The bottom of 430, after embedding described blind hole 430 with the cover sheet 421 improving described Fingerprint Identification Unit 20
Stability.
It in conjunction with reference to Fig. 5 and Fig. 9, in another embodiment of the present invention, is opened in described glass cover-plate
Blind hole 431 on 40 is flared structure, and the sidewall of the sidewall 4311 of i.e. described blind hole 431 is for towards institute
State the downward-sloping structure in the center of blind hole 431, make between sidewall 4311 and the bottom of described blind hole 431
Angle be more than 90 degree.
In conjunction with reference Figure 10, after being arranged on described Fingerprint Identification Unit 20 on described glass cover-plate 40,
The upper surface of the cover sheet 21 of described Fingerprint Identification Unit 20 is attached to the bottom of described blind hole 431, and
Form space between the sidewall and cover sheet 21 of described blind hole 431.
Said structure can reduce the stress concentration phenomenon at blind hole 431 sidewall 4311 edge, reduces glass cover
The fragmentation probability of plate 40.
In this embodiment, the sidewall 4311 of described blind hole 431 is straight incline structure, described blind hole 431
Sidewall 4311 and bottom between be hypotenuse transition.Referring again to Figure 11, in another embodiment of the invention,
The sidewall 4321 of blind hole 432 can be arc oblique structure, the sidewall 4321 of described blind hole 432 and the end
It is the transition of arc limit between portion.In one more embodiment of the present invention, the sidewall of described blind hole can be camber line
Structure with Straight Combination.In the present invention, the structure of described blind hole sidewall designs according to actual needs, this
Invention does not limit the concrete structure of described blind hole.
Embodiment 2
The fingerprint recognition system technical scheme that the present embodiment fingerprint recognition system provides with above-described embodiment 1 is big
Causing identical, in conjunction with reference to Figure 12 and 13, wherein Figure 12 is that the structure of the present embodiment fingerprint recognition system is shown
Being intended to, Figure 13 is the structural representation of glass cover-plate in 12.
Described fingerprint recognition system includes glass cover-plate 401 and the finger being arranged on described glass cover-plate 401
Line identifier 20.
Described glass cover-plate 401 includes first surface 4011 and second surface 4012, wherein, described first
Surface 4011 includes finger touch region 412；And described Fingerprint Identification Unit 20 is arranged on described glass cover-plate
The second surface 4012 of 401, and described Fingerprint Identification Unit 20 and position, described finger touch region 412 phase
Corresponding.
The present embodiment is with the difference of above-described embodiment 1:
It with reference to Figure 12, in the present embodiment, on the first surface 4011 of described glass cover-plate 401, is positioned at
Offering blind hole 433 in described fingerprint recognition region 412, described Fingerprint Identification Unit 20 is arranged on described glass
Glass cover plate 401 and corresponding position, described finger touch region 412.Described blind hole 433 can reduce described
Glass cover-plate thickness between finger touch region 412 and Fingerprint Identification Unit 20.
In alternative, the edge 4311 of described blind hole 433 openend is arcuate structure, described blind hole 433
Sidewall 4311 and bottom between be the transition of arc limit.In use, finger can be avoided by being placed on
When stating on finger touch region 412, finger is scratched, and improves the sense of touch of finger.
Additionally, remaining structure of described blind hole 433 is similar to the blind hole structure in above-described embodiment 1, bag
Include:
The thickness of the glass cover-plate 401 bottom described blind hole 433 is 0.14～0.5 millimeter.To guarantee glass
Cover plate 401 has sufficient mechanical strength simultaneously, improves the light signal strength that Fingerprint Identification Unit 20 gathers；
The sidewall of described blind hole 433 is for being perpendicular to bottom described blind hole 433, or described blind hole 433 is
Flared structure, and the sidewall of described blind hole 433 linearly or camber line is towards in described blind hole 431
The structure that the heart tilts, makes the angle between the sidewall of described blind hole 433 and bottom be more than 90 degree.
In the present embodiment, the structure of described Fingerprint Identification Unit 20 and the Fingerprint Identification Unit structure in embodiment 1
Similar, do not repeat them here.Described Fingerprint Identification Unit 20 and the attachment structure district of described glass cover-plate 401
It is not only that:
In the present embodiment, the second surface 4012 of described glass cover-plate 401 is corresponding with described blind hole 433
Position is flat configuration, the upper surface of the cover sheet 21 of described Fingerprint Identification Unit 20 and described glass
The second surface 4012 of cover plate 401 is connected by transparent glue is fixing.
Embodiment 3
The present embodiment fingerprint recognition system and the fingerprint recognition system in above-described embodiment 1 and embodiment 2
Technical scheme is roughly the same, and it differs only in:
With reference to Figure 14 and 15, Figure 14 is the structural representation of the present embodiment fingerprint recognition system；Figure 15 is
The structural representation of glass cover-plate in Figure 14.
In the present embodiment, described glass cover-plate 402 offers two blind holes, including be positioned at described
It on the first surface 4021 of glass cover-plate 402, and is positioned at the first blind of described finger touch region 413
Hole 434, and being positioned on the second surface 4022 of described glass cover-plate 402, and with described first blind hole
The second relative blind hole 435 of 434 positions.
Described Fingerprint Identification Unit 20 is arranged on described glass cover-plate 402 second surface 4022 and described finger
The corresponding position of touch area 413.Described first blind hole 434 and the second blind hole 435 can reduce described
The thickness of the glass cover-plate 402 between finger touch region 413 and Fingerprint Identification Unit 20.
Alternatively, glass cover-plate 402 between described second blind hole 434 and described second blind hole 435
Thickness is 0.14～0.5 millimeter.To guarantee that glass cover-plate 402 has sufficient mechanical strength simultaneously, raising refers to
The light signal strength that line identifier 20 gathers.
In the present embodiment, the structure of the blind hole 430 in the structure of described second blind hole 435 and embodiment 1
Similar, as described second blind hole 435 sidewall can for being perpendicular to bottom described second blind hole 435, or
Be described second blind hole 435 be flared structure, and the sidewall of described second blind hole 435 linearly or
The camber line structure downward-sloping towards the center of described second blind hole 435, makes described second blind hole 435
Angle between sidewall and bottom is more than 90 degree.The concrete structure reference implementation example of described second blind hole 435
1, do not repeat them here.
In the present embodiment, the structure of described Fingerprint Identification Unit 20 is similar to Example 1, and Fingerprint Identification Unit
20 is similar to Example 1 with the connected mode of glass cover-plate 402.Such as the guarantor of described Fingerprint Identification Unit 20
Protecting cover plate 21 embeds in described second blind hole 435, and the upper surface of cover sheet 21 passes through transparent glue
Stick to the bottom of described second blind hole 435.
Described Fingerprint Identification Unit can be improved in described Fingerprint Identification Unit 20 is arranged on described second blind hole 435
20 with the bonding strength of glass cover-plate 402.The structure of described Fingerprint Identification Unit 20, and itself and glass cover-plate
Concrete structure above-described embodiment 1 of the connection of 420, does not repeats them here.
In the present embodiment, the structure of described first blind hole 434 and the blind hole 433 structure phase in embodiment 2
Seemingly.Including:
The edge of described first blind hole 434 openend is arcuate structure.To avoid finger by being placed on described hand
It is scratched when referring on touch area 412, and the sense of touch of finger can be improved；In addition described first blind hole 434
Sidewall for being perpendicular to bottom described first blind hole 434, or described first blind hole 434 is tubaeform knot
Structure, and the sidewall of described first blind hole 434 linearly or camber line is towards in described first blind hole 434
The downward-sloping structure of the heart, makes the angle between the sidewall of described first blind hole 434 and bottom be more than 90 degree.
The concrete structure of described first blind hole 434 refers to the blind hole 433 in embodiment 2, does not repeats them here.
Additionally, present invention also offers the forming method of above-mentioned fingerprint recognition system.Described fingerprint recognition system
System forming method include: first provide glass cover-plate, described glass cover-plate include first surface and with described
The relative second surface of first surface；
Afterwards, carry out thermoplastic process to glass cover-plate, and the glass cover-plate after thermoplastic is placed
On mould, and use first surface or the second surface of glass cover-plate described in the punch of mould, at glass
The surface of glass cover plate forms blind hole；
On the second surface of described glass cover-plate, fingerprint is installed on corresponding position with described blind hole and knows
Other device；And on the first surface of described glass cover-plate, corresponding position forms finger and touches with described blind hole
Control region.
In the present invention, use and first thermoplastic process is carried out to glass cover-plate, reduce described glass cover-plate crisp
Property, improve the plastic deformation ability of described glass cover-plate, thus afterwards with the punch glass of mould
Cover plate thus formed during blind hole on glass cover-plate, it is to avoid glass cover-plate based on drift impulsive force and
The defect of fragmentation occurs.
Figure 16 is the structural representation of forming method one embodiment of fingerprint recognition system of the present invention.
With reference to Figure 16, the forming method of the present embodiment line identification system includes:
There is provided glass cover-plate 70, described glass cover-plate include first surface 71 and with described first surface 71
Relative second surface 72；
In the present embodiment, the thickness of described glass cover-plate is 0.55 millimeter.The material of described glass cover-plate
Material can which is prior art, at this no longer for for making the glass of mobile phone touch or computer display screen
Repeat.
Thermoplastic process is carried out to described glass cover-plate 70.After a heating treatment so that described glass cover
Plate 70 softens, and reduces the fragility of glass cover-plate 70, improves toughness, to improve described glass cover-plate 70
Plastic deformation ability.
During sofening treatment, if temperature is too low, the softening degree of glass cover-plate 70 is inadequate, causes the later stage
When described glass cover-plate 70 is molded blind hole, glass cover-plate is caused to damage；If the too high glass of temperature flows
Property excessively good, because of flowing and be difficult to be molded；If additionally, the heat time is too short, glass cover-plate 70 is caused to add
Heat is uneven, and during following process, the defect that bursts easily occurs in glass cover-plate 70, if the heat time is long,
Reduce efficiency.
Alternatively, the step carrying out thermoplastic process to described glass cover-plate 70 includes: at control heating
The temperature of reason is for exceeding glass cover-plate softening point 50～80 DEG C, and the duration of heating is 20～40 minutes
(min)。
In the present embodiment, the temperature carrying out thermoplastic process to described glass cover-plate 70 is
900～1000 DEG C.
After thermoplastic process is carried out to described glass cover-plate 70, described glass cover-plate 70 is formed
Blind hole.The detailed process forming blind hole on described glass cover-plate 70 includes:
Mould 60 is provided.
In the present embodiment, described mould includes support, and rack-mount drift 61, described punching
61 can move A in the first direction.
Afterwards, the described glass cover-plate 70 after thermoplastic is placed on the bracket.
In the present embodiment, after described glass cover-plate 70 is placed on the bracket, make described glass cover-plate
The second surface 72 of 70 is towards described drift 60；
Move the described glass cover after described drift 60 makes the heated sofening treatment of described drift 60 punching press again
The second surface 72 of plate 70, forms blind hole 73 on the second surface 72 of described glass cover-plate 70；And
On the first surface 71 of described glass cover-plate 70, corresponding position forms finger with described blind hole 73
Touch area.
Compared to using machining or corrosion processing forms the works such as blind hole on described glass cover-plate 70
Skill, in the present embodiment, the glass cover-plate after thermoplastic is processed has higher toughness and plastic deformation energy
Power, thus can reduce to be formed during punch glass cover-plate and the stress in glass cover-plate, it is to avoid glass
Cover plate fragmentation, improves yield rate.
In the present embodiment, after described glass cover-plate 70 forms blind hole 73, at described second surface 72
On, Fingerprint Identification Unit (not shown) is installed in the corresponding position with described finger touch region.Institute
State blind hole 73 and reduce the thickness of the glass cover-plate 70 between described finger touch region and Fingerprint Identification Unit,
Thus during follow-up use, can produce in glass cover-plate after less thus light injects glass cover-plate
Raw diffusion phenomenon, thus improve the optical signal accuracy that Fingerprint Identification Unit receives.
With glass cover-plate 70 described in the punching press of described drift 61 being formed in the step of blind hole 73, if described
Bottom blind hole 73, the thickness of remaining glass cover-plate 70 is too small, causes glass cover-plate excessively thin, resistance to impact
Difference, is easily broken；If the thickness of remaining glass cover-plate 70 is excessive bottom blind hole 73, light is caused to exist
Diffusion phenomenon in cover-plate glass 70 is excessive, reduces the optical signal that described Fingerprint Identification Unit gathers.
In the present embodiment, with glass cover-plate 70 described in the punching press of described drift 61 to form the step of blind hole 73
After Zhou, bottom described blind hole 73, the thickness of remaining glass cover-plate 70 is 0.14～0.5 millimeter.
In the present embodiment, form blind hole at the second surface 72 with glass cover-plate 70 described in drift 61 punching press
After 73, before Fingerprint Identification Unit installed by described glass cover-plate 70, the formation side of described fingerprint recognition system
Method also includes:
Remove described drift 61, described glass cover-plate 70 is made annealing treatment.
After the annealing process, described annealing can reduce glass cover-plate 70 previously technique and (includes: add
Thermal softening process, and with punch glass cover-plate to form the process of blind hole) in, it is formed at glass
, in use there is the cold defect such as quick-fried to reduce glass cover-plate 70, carries in thermal stress in cover plate 70
The stability of high glass cover-plate.
In the present embodiment, the step of described annealing includes: control temperature is 600～700 DEG C, persistently moves back
Fire 120～170 hours.
Using annealing process, after reducing the thermal stress in described glass cover-plate 70, to described glass cover-plate
70 carry out rigidifying process, to adjust the internal stress substep in glass cover-plate 70, to improve the strong of glass cover-plate
Degree.
In the present embodiment, the step that described rigidifying is processed includes: the temperature that control rigidifying is processed is
400～650 DEG C.
The concrete technology that described rigidifying is processed is state of the art, does not repeats them here.
Alternatively, after making annealing treatment described glass cover-plate, before rigidifying is processed, described fingerprint is known
The forming method of other system also includes:
Finishing process is carried out to described glass cover-plate.Described finishing processes and includes being polished technique,
Thus the steps such as smooth treatment are carried out to the surface (including blind via bottom and sidewall) of described glass cover-plate,
With the described glass cover plate surfaces flatness of raising and smoothness, and reduce light in described glass cover-plate
Diffusion phenomenon, improves light signal strength and the degree of accuracy that Fingerprint Identification Unit receives.
After completing the step that described glass cover-plate 70 rigidifying is processed, at the second table of described glass cover-plate 70
The step that Fingerprint Identification Unit is installed in face 72 includes: described Fingerprint Identification Unit is arranged on described second surface 72
Blind hole in.Thus improve the intensity that Fingerprint Identification Unit is arranged on described glass cover-plate 70, and minimizing refers to
Between line identifier and described glass cover-plate 70 first surface 71 (that is, described finger touch region) away from
From, i.e. reduce follow-up use during, be placed in the finger on the first surface 71 of described glass cover-plate 70
The spacing of fingerprint face extremely described Fingerprint Identification Unit, the light that reduction Fingerprint Identification Unit sends is at described glass
Diffusion phenomenon in cover plate 70 and air, improves the degree of accuracy of the optical signal that Fingerprint Identification Unit receives.
Alternatively, in the present embodiment, use transparent glue that Fingerprint Identification Unit is fixed on described glass cover-plate
On 70.
By transparent glue described Fingerprint Identification Unit sticked in the technical scheme on glass cover-plate.Transparent
Glue and the refractive index close of glass, there is preferable light transmission, and transparent glue can filling glass lid
The pit on plate surface, improves the flatness of Fingerprint Identification Unit and glass cover-plate linkage interface, reduces light and leads to
Cross glass cover-plate, and the diffusion phenomenon during linkage interface of glass cover-plate 40 and Fingerprint Identification Unit, to carry
The degree of accuracy of the optical signal that high Fingerprint Identification Unit receives.
It should be noted that in the present embodiment, institute can be changed by changing the structure of described drift 61
Stating the structure of blind hole 73, as made described drift 61 for cylinder, the sidewall making the blind hole 73 of formation is vertical
Bottom blind hole 73；Make described drift 61 for going tip circle taper so that the blind hole 73 of formation is tubaeform
Structure, and by changing the surface texture of described drift 61 so that the sidewall of described blind hole 73 is linearly
Or the structure that camber line is downward-sloping towards the center of described blind hole 73, make the sidewall of described blind hole 73 with
Angle between Di Bu is more than 90 degree.
In the present embodiment, the second surface 72 of described glass cover-plate 70 forms described blind hole 73,
In an alternative embodiment of the invention, can be formed described on the first surface 71 of described glass cover-plate 70
Blind hole, the finger touch region of the i.e. described glass cover-plate 70 in described blind hole present position；
Additionally, by the structure of the described drift 61 of change, or can be formed on described first surface 71
After described blind hole, machining is carried out to described glass cover-plate 70, make the blind hole on described first surface 71
The edge of openend is arcuate structure, to avoid finger by quilt when being placed on described finger touch region 412
Scratch, and the sense of touch of finger can be improved.
The step installing Fingerprint Identification Unit on described glass cover-plate 70 includes: at described glass cover-plate 70
Second surface 72 on described Fingerprint Identification Unit is installed, described Fingerprint Identification Unit is arranged on this case of described glass
On 70 even curfaces.
In another embodiment of fingerprint recognition system of the present invention, can be at the first table of described glass cover-plate 70
A described blind hole is respectively offered in position relative with second surface 72, face 71；Wherein, described first surface 71
On blind hole present position form the finger touch region of described glass cover-plate 70, described Fingerprint Identification Unit can
It is arranged in the blind hole of described second surface.Above-mentioned simple change is all within the scope of the present invention.
Although present disclosure is as above, but the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
The scope of protecting should be as the criterion with claim limited range.
Claims (28)
1. a fingerprint recognition system, it is characterised in that include:
Glass cover-plate, including first surface and the second surface relative with first surface, described first surface bag
Include finger touch region；
Fingerprint Identification Unit, is arranged on the second surface of described glass cover-plate, and with described finger touch region
Corresponding, for obtaining the finger print information of finger in described finger touch region；
On the first surface or second surface of described glass cover-plate, corresponding with described finger touch region
Position offers blind hole, for making the glass cover-plate thickness at described finger touch region be less than other
The glass cover-plate thickness in region.
2. fingerprint recognition system according to claim 1, it is characterised in that the glass of described blind via bottom
The thickness of cover plate is 0.14～0.5 millimeter.
3. fingerprint recognition system according to claim 1, it is characterised in that described blind hole is positioned at described
Two surfaces.
4. fingerprint recognition system according to claim 3, it is characterised in that described Fingerprint Identification Unit is installed
In described blind hole.
5. fingerprint recognition system according to claim 1, it is characterised in that
Described Fingerprint Identification Unit includes:
Cover sheet；
Sensor, is positioned at below described cover sheet, and fixing with described cover sheet is connected, described sensing
Device is used for obtaining fingerprint signal；
Light emitting module, is used for providing light source；
Chip, is electrically connected with described sensor, for processing the fingerprint signal that sensor obtains, to be formed
Finger print information；
The surface of described cover sheet is fixing with the second surface of described glass cover-plate to be connected, for by described finger
Line identifier is arranged on described glass cover-plate.
6. fingerprint recognition system according to claim 5, it is characterised in that described cover sheet is fixed on
In described blind hole.
7. fingerprint recognition system according to claim 1, it is characterised in that described blind hole is arranged at described
First surface and be positioned at described finger touch region.
8. fingerprint recognition system according to claim 7, it is characterised in that the limit of described blind hole openend
Edge is arcuate structure.
9. fingerprint recognition system according to claim 1, it is characterised in that the sidewall of described blind hole is vertical
Bottom in described blind hole.
10. fingerprint recognition system according to claim 1, it is characterised in that the sidewall of described blind hole and the end
Angle between portion is more than 90 degree.
11. fingerprint recognition systems according to claim 1, it is characterised in that the sidewall of described blind hole and the end
It is the transition of arc limit between portion.
12. fingerprint recognition systems according to claim 1, it is characterised in that the sidewall of described blind hole and the end
It is hypotenuse transition between portion.
13. fingerprint recognition systems according to claim 1, it is characterised in that described Fingerprint Identification Unit passes through
Glue sticks on the second surface of described glass cover-plate.
14. fingerprint recognition systems according to claim 1, it is characterised in that described blind via bottom coarse
Degree is less than or equal to 3.2 μm.
15. fingerprint recognition systems according to claim 1, it is characterised in that the quantity of described blind hole is two
Individual, it is respectively arranged on first surface and the second surface of described glass cover-plate, and touch with described finger
The position in control region is corresponding.
16. fingerprint recognition systems according to claim 1, it is characterised in that fingerprint recognition system also includes
Shell；
Described Fingerprint Identification Unit is arranged in described shell；
Described glass cover-plate is installed on the housing, for being sealed in Fingerprint Identification Unit in described shell.
The forming method of 17. 1 kinds of fingerprint recognition systems, it is characterised in that include:
There is provided glass cover-plate, described glass cover-plate includes first surface and relative with described first surface second
Surface；
Thermoplastic process is carried out to described glass cover-plate；
There is provided mould, described mould includes drift, described in after the heated sofening treatment of described punch
The first surface of glass cover-plate or second surface, form blind hole in described glass cover-plate；Described glass
On the first surface of glass cover plate, corresponding position forms finger touch region with described blind hole；
Fingerprint Identification Unit is provided, described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate,
And make described Fingerprint Identification Unit corresponding with described blind hole position.
The forming method of 18. fingerprint recognition systems according to claim 17, it is characterised in that to described glass
The step that glass cover plate carries out thermoplastic process includes: the temperature that control is heated is for exceeding glass cover
Plate softening point 50～80 DEG C, continuous heating processes 20～40min.
The forming method of 19. fingerprint recognition systems according to claim 17, it is characterised in that described heating
The temperature processing is 900～1000 DEG C.
The forming method of 20. fingerprint recognition systems according to claim 17, it is characterised in that with described punching
The first surface of the described glass cover-plate of primary drying pressure or second surface, form blind in described glass cover-plate
The step in hole includes: make described blind via bottom remaining glass cover-plate thickness be 0.14～0.5 millimeter.
The forming method of 21. fingerprint recognition systems according to claim 17, it is characterised in that with described punching
The first surface of the described glass cover-plate of primary drying pressure or second surface, form blind in described glass cover-plate
The step in hole includes: be respectively formed a blind hole, and described first at described first surface and second surface
Surface is corresponding with the two of second surface blind hole positions.
The forming method of 22. fingerprint recognition systems according to claim 17, it is characterised in that forming institute
After stating blind hole, before providing described Fingerprint Identification Unit, described forming method also includes:
Remove described drift, described glass cover-plate is made annealing treatment；
After the annealing process, rigidifying process is carried out to described glass cover-plate.
The forming method of 23. fingerprint recognition systems according to claim 22, it is characterised in that described annealing
The step processing includes: control temperature is 600～700 DEG C, persistently anneals 120～170 hours.
The forming method of 24. fingerprint recognition systems according to claim 22, it is characterised in that described rigidifying
The step processing includes: the temperature that control rigidifying is processed is 400～650 DEG C.
The forming method of 25. fingerprint recognition systems according to claim 22, it is characterised in that move back described
After fire is processed, before rigidifying is processed, described forming method also includes: by finishing to described glass cover
Plate carries out smooth treatment.
The forming method of 26. fingerprint recognition systems according to claim 17, it is characterised in that by described finger
The step that line identifier is arranged on the second surface of described glass cover-plate includes: use glue by described
Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate.
The forming method of 27. fingerprint recognition systems according to claim 17, it is characterised in that with described punching
The first surface of the described glass cover-plate of primary drying pressure or second surface, form blind in described glass cover-plate
The step in hole includes: form described blind hole on described second surface；
The step that described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate is included: by described
Fingerprint Identification Unit is arranged in the blind hole of described second surface.
The forming method of 28. fingerprint recognition systems according to claim 17, it is characterised in that with described punching
The first surface of the described glass cover-plate of primary drying pressure or second surface, form blind in described glass cover-plate
The step in hole includes: form described blind hole on the first surface；
The step that described Fingerprint Identification Unit is arranged on the second surface of described glass cover-plate is included: by described
Fingerprint Identification Unit is installed on second surface, and described Fingerprint Identification Unit is corresponding with described blind hole position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510203658.7A CN106156716A (en) | 2015-04-24 | 2015-04-24 | Fingerprint recognition system and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510203658.7A CN106156716A (en) | 2015-04-24 | 2015-04-24 | Fingerprint recognition system and forming method thereof |
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| CN201510203658.7A Pending CN106156716A (en) | 2015-04-24 | 2015-04-24 | Fingerprint recognition system and forming method thereof |
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| CN108268820A (en) * | 2016-12-30 | 2018-07-10 | 南昌欧菲光学技术有限公司 | Electronic device, glass cover-plate and preparation method thereof |
| CN109202672A (en) * | 2017-06-30 | 2019-01-15 | 蓝思科技（长沙）有限公司 | A kind of polishing process, polishing machine and mobile phone glass cover board |
| CN109946780A (en) * | 2018-02-13 | 2019-06-28 | 华为技术有限公司 | Protective film, the method and apparatus for cutting protective film |
| CN109977732A (en) * | 2017-12-27 | 2019-07-05 | 上海箩箕技术有限公司 | Fingerprint imaging mould group |
| CN110436766A (en) * | 2019-08-28 | 2019-11-12 | 捷庭有限公司 | The glass protecting label and its manufacturing method of gradual blind hole |
| CN110914890A (en) * | 2017-07-20 | 2020-03-24 | 日本电气硝子株式会社 | Cover member and information device |
| CN110910552A (en) * | 2019-11-06 | 2020-03-24 | 广州京海科技有限公司 | Fingerprint entrance guard equipment that recognition accuracy is high |
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Application publication date: 20161123 |