CN107644202A - A kind of optical finger print module and mobile terminal - Google Patents
A kind of optical finger print module and mobile terminal Download PDFInfo
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- CN107644202A CN107644202A CN201710805569.9A CN201710805569A CN107644202A CN 107644202 A CN107644202 A CN 107644202A CN 201710805569 A CN201710805569 A CN 201710805569A CN 107644202 A CN107644202 A CN 107644202A
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- fingerprint recognition
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Abstract
The present invention, which provides a kind of optical finger print module and mobile terminal, wherein optical finger print module, to be included：Fingerprint recognition chip, fingerprint recognition chip are arranged at the lower section of the screen of mobile terminal；At least one LED lamp, wherein at least one LED are arranged at the periphery predetermined position of fingerprint recognition chip.The embodiment of the present invention is solved present in prior art because the luminous penetration thickness of automatic light source on screen is smaller, causes the problem of screen fingerprint recognition failure easily occur.
Description
Technical field
The present invention relates to field of mobile terminals, more particularly to a kind of optical finger print module and mobile terminal.
Background technology
It is at present the information security of protection user, use of the fingerprint identification function on mobile phone is more and more common, for example uses
In mobile phone unblock and mobile payment etc., this brings great advantage to the user while user information safety is protected
Property.Wherein, screen fingerprint identification technology is exactly that user directly can be achieved with shielding by touching some viewing area of screen
Curtain identification.For example, optical screen fingerprint recognition principle is exactly that (Organic Light-Emitting Diode, have using OLED
Machine light emitting diode) screen the light that sends of OLED, after the different-energy reflection of the Wave crest and wave trough of finger print, shielded
The optical finger print module of curtain lower section receives, and by the capacity volume variance of Wave crest and wave trough, distinguishes Wave crest and wave trough and form fingerprint image
Picture, screen fingerprint identification function is realized eventually through algorithm.
But because optical screen fingerprint recognition is that operation carries out fingerprint recognition on OLED screen curtain, optical emitting uses
The OLED that OLED screen curtain carries, because OLED transmittings light intensity has certain limitation, such as the brightness value one of OLED screen curtain in itself
As highest there was only 500nits or so, and this brightness is difficult to improve, and this causes in optical screen fingerprint recognition, and OLED's is luminous
Penetration thickness is typically small (highest penetration thickness only has 1.5mm or so at present), now if being sticked on OLED screen curtain has tempering
The screen protection layer such as film, then easily lead in optical screen fingerprint recognition, OLED transmitting insufficient light is to irradiate user
Finger, the problem of so as to cause successfully carry out fingerprint recognition.
In summary, in the prior art there is the luminous penetration thickness of the automatic light source due to screen is smaller, cause to hold
Easily there is the problem of screen fingerprint recognition failure.
The content of the invention
The embodiment of the present invention provides a kind of optical finger print module and mobile terminal, with solve present in prior art due to
The luminous penetration thickness of the automatic light source of screen is smaller, causes the problem of screen fingerprint recognition failure easily occur.
In a first aspect, the embodiment of the present invention provides a kind of optical finger print module, including：
Fingerprint recognition chip, the fingerprint recognition chip are arranged at the lower section of the screen of mobile terminal；
At least one LED lamp, wherein at least one LED is arranged at the fingerprint recognition chip
Periphery predetermined position.
Second aspect, the embodiment of the present invention provide a kind of mobile terminal, and the mobile terminal includes above-mentioned optical finger print
Module.
In embodiments of the present invention, at least one LED is set by the periphery predetermined position in fingerprint recognition chip,
So that carrying out fingerprint recognition, when the automatic light source for lighting screen is luminous, the light that at least one LED is sent can be worn
The gap of saturating screen pixels, so as to form extra illuminating source on screen, and then light when enhancing fingerprint recognition
Luminosity, and improve luminous penetration thickness so that light-emitting line can penetrate screen and be irradiated on finger, solve existing
Because the luminous penetration thickness of the automatic light source for lighting screen is smaller present in technology, cause the mistake of screen fingerprint recognition easily occur
The problem of losing.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 represents the schematic diagram of light fingerprint module in embodiments of the invention；
Fig. 2 represents one of structural representation of annulus in embodiments of the invention；
Fig. 3 represents two of the structural representation of annulus in embodiments of the invention；
Fig. 4 represents the distribution schematic diagram of light shield layer and photic zone on annulus in this embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
As shown in figure 1, optical finger print module provided in an embodiment of the present invention includes fingerprint recognition chip 1 and at least one
LED 2.Wherein, fingerprint recognition chip 1 is arranged at the lower section of the screen 3 of mobile terminal, and at least one LED 2 is arranged at fingerprint
The periphery predetermined position of identification chip 1.
Specifically, the periphery predeterminated position of fingerprint recognition chip 1 can be pre- on the preset direction of fingerprint recognition chip 1
If opening position.For example, it can be set respectively in the predetermined position of the surface of fingerprint chip, underface, front-left and front-right
Put a LED 2.
In addition, specifically, do not limit the quantity of LED 2 specifically herein.Certainly, the quantity of LED 2 is more, luminance
Degree enhancing energy is stronger, and the quantity of LED 2 can be selected according to brightness demand with space structure, is sent out with realizing in enhancing
While brightness, farthest reduce the space shared by LED 2.
At least one LED 2 is so set by the periphery predetermined position in fingerprint recognition chip 1 so that when finger 4
Touch in optical finger print identification region, light screen 3 light source 31 (such as OLED on screen) it is luminous while, Neng Goukai
LED 2 is opened, so that when LED 2 lights, the light that LED 2 is sent can penetrate the gap of screen pixels, so that
Extra luminescence light source is formed on screen 3, the luminosity humidification of light is realized, so as to improve the penetration thickness of light, enters
And enable transmitting light U to penetrate screen 3 and be irradiated on finger 4, and the reflection light D after finger print reflects can
Received by fingerprint recognition chip 1, finally realize the function of screen fingerprint recognition, add the success rate of fingerprint recognition.
So, the present embodiment sets at least one LED by the periphery predetermined position in fingerprint recognition chip so that
Fingerprint recognition is being carried out, while the automatic light source for lighting screen is luminous, the light that LED is sent can penetrate screen picture
The gap of element, so as to form extra illuminating source on screen, and then the luminosity of light is enhanced, improve luminous wear
Saturating thickness so that light-emitting line can penetrate screen and be irradiated on finger, solve present in prior art due on screen
The automatic light source penetration thickness that lights it is smaller, the problem of causing easily to occur the failure of screen fingerprint recognition.
In addition, further, the spectral color of light source of the spectral color of LED 2 with lighting screen 3 is identical.For example, work as
When the light source 31 for lighting screen 3 is the OLED on screen, the spectral color of LED 2 is identical with OLED spectral color.So,
Enable to the light color that LED 2 is sent consistent with lighting the light color that the light source 31 of screen 3 is sent, so that
The light indifference that the light that LED 2 is sent can be sent with lighting the light source 31 of screen 3 mixes, and farthest reaches
Strengthen the purpose of light luminance intensity.
In addition, further, as shown in figure 1, optical finger print module also includes a flexible PCB 5, fingerprint recognition chip 1
It is connected with least one LED 2 with flexible PCB 5.This makes it possible to by flexible PCB 5 while realizes LED 2
The fingerprint identification function of driving function and fingerprint recognition chip 1, facilitate the control in fingerprint recognition, realized to LED.
In addition, further, as shown in Figures 2 and 3, optical finger print module also includes one and is used to install at least one LED
The annulus 6 of lamp 2, the wherein annulus 6 are arranged at the lower section of screen 3, and fingerprint recognition chip 1 is arranged in annulus 6, and the court of annulus 6
Multiple light troughs 7 are provided with to the one side of screen 3, wherein at least one LED 2 is correspondingly arranged in multiple light troughs 7 respectively.
So, because fingerprint recognition chip 1 is arranged in annulus 6, i.e., annulus 6 is set around fingerprint recognition chip 1, and ring
With 6 towards being provided with multiple light troughs 7 for mounted LED lamp 2 in the one side of screen 3 so that the LED 2 in light trough 7
When luminous, the light that LED 2 is sent can strengthen the luminosity of the screen area of the top of fingerprint recognition chip 1, so that
When realizing fingerprint identification function by fingerprint recognition chip 1, LED 2 can be on the screen 3 above fingerprint recognition chip 1
Extra luminescence light source is formed, the luminosity humidification of the screen 3 of the top of fingerprint recognition chip 1 is realized, so as to improve
The penetration thickness of light, add the success rate of fingerprint recognition.
Specifically, annulus 6 can be straight-flanked ring band or circular band.As shown in Figures 2 to 4, annulus 6 is straight-flanked ring
Band.In addition, when annulus 6 is straight-flanked ring band, the quantity of light trough 7 can be 4, and light trough 7 is uniformly arranged on annulus 6.
In such manner, it is possible to so that a LED 2 is provided with the surrounding of fingerprint recognition chip 1, so that LED 2 can be in fingerprint
Extra luminescence light source is formed on the screen area of the top of identification chip 1, and then realize the screen of the top of fingerprint recognition chip 1
Luminosity humidification, add the success rate of fingerprint recognition.
In addition, further, referring to Fig. 2 and Fig. 4, screening is provided with the medial surface of fingerprint recognition chip 1 on annulus 6
Photosphere 8, the light shield layer 8 are used to stop that the light that at least one LED 2 is sent exposes to fingerprint recognition chip 1.So, lead to
Cross on annulus 6 around fingerprint recognition chip 1 surrounding medial surface on set light shield layer 8, enable to fingerprint recognition chip 1 with
The light that LED 2 is sent is isolated, and the light for avoiding the transmitting of LED 2 is directly coupled at fingerprint recognition chip 1, so as to keep away
Light is exempted from and interference is formed to fingerprint recognition chip 1.
Specifically, the material of light shield layer 8 can be black plastic or black coating, to stop LED 2 to greatest extent
The light sent is exposed on fingerprint recognition chip 1.
In addition, further, referring to Fig. 4, annulus 6 is towards being provided with for transmiting at least one LED in the one side of screen 3
The photic zone 9 for the light that lamp 2 is sent.So, by the one side in annulus 6 towards screen 3, that is, it is provided with the one side of light trough 7
Set photic zone 9, can realize the light that LED 2 is sent be uniformly distributed and printing opacity so that the light that LED 2 is sent can
Direction printing opacity by from the photic zone 9 to screen 3, and then extra illuminating source is formed on screen, realize enhancing hair
The purpose of brightness intensity.Specifically, when arranging photic zone 9, photic zone can also be set above the notch of each light trough 7
9, it can so ensure that photic zone 9 is respectively positioned on the top of LED 2, so as to farthest realize the light that LED is sent
It is uniformly distributed and translucent effect.
Specifically, photic zone 9 can be made up of optical material.Specifically, the material of photic zone 9 can be perspex,
With farthest realize light that LED 2 sends be uniformly distributed and printing opacity.
So, the embodiment of the present invention sets at least one LED by the periphery predetermined position in fingerprint recognition chip,
So that carrying out fingerprint recognition, during light source luminescent for lighting screen, the light that LED is sent can penetrate screen pixels
Gap, so as to forming extra illuminating source on screen, and then the luminosity of light when enhancing fingerprint recognition, improve
Luminous penetration thickness so that light-emitting line can penetrate screen and be irradiated on finger, solve present in prior art by
It is smaller in the luminous penetration thickness for the light source for lighting screen, cause the problem of screen fingerprint recognition failure easily occur.
In addition, the embodiment of the present invention additionally provides a kind of mobile terminal, the mobile terminal includes the light in above-described embodiment
Learn fingerprint module.
So, on mobile terminals using the optical finger print module in the present embodiment, the implementation of above-mentioned optical finger print module
The implementation of example is equally applicable to the mobile terminal.So due in optical finger print module, in the week of fingerprint recognition chip
Side predetermined position sets at least one LED so that carrying out fingerprint recognition, for light screen light source luminescent it is same
When, the light that LED is sent can penetrate the gap of screen pixels, so as to form extra illuminating source on screen, and then
The luminosity of light is enhanced, improves luminous penetration thickness so that light-emitting line can penetrate screen and be irradiated on finger,
Solve present in prior art because the luminous penetration thickness for the light source for lighting screen is smaller, cause screen easily occur to refer to
The problem of line recognition failures.
In the description of the invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " setting " " are pacified
Dress " " connected " " connection " etc. should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected with by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Above-described embodiment is described in reference to the drawings, and other different forms and embodiment are also possible without departing from this
The principle of invention, therefore, the present invention should not be construed as the limitation of embodiment is proposed at this.More precisely, these realities
Apply example and be provided so that the present invention can be perfect and complete, and the scope of the invention can be communicated to those skilled in the art.
In accompanying drawing, size of components and relative size are perhaps based on being exaggerated for the sake of clear.Term used herein, which is based only on, to be retouched
Specific embodiment purpose is stated, being not intended to, which turns into limitation, uses.Term "comprising" and/or " comprising " are when being used in this specification, table
Show the presence of the feature, integer, component and/or component, but be not excluded for one or more further features, integer, component, component
And/or the presence or increase of its group.Unless otherwise indicated, narrative tense, a value scope include the bound and therebetween of the scope
Any subrange.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. optical finger print module, it is characterised in that including：Fingerprint recognition chip, the fingerprint recognition chip are arranged at the lower section of the screen of mobile terminal；At least one LED lamp, wherein at least one LED is arranged at the periphery of the fingerprint recognition chip Predetermined position.
- 2. optical finger print module according to claim 1, it is characterised in that the spectral color of the LED is with lighting institute The spectral color for stating the light source of screen is identical.
- 3. optical finger print module according to claim 1, it is characterised in that it is flexible that the optical finger print module also includes one Circuit board, the fingerprint recognition chip and at least one LED electrically connect with the flexible PCB.
- 4. optical finger print module according to claim 1, it is characterised in that the optical finger print module is also used for including one The annulus of at least one LED is installed, wherein the annulus is arranged at below screen, and the fingerprint recognition chip is set In in the annulus, and the annulus is towards multiple light troughs are provided with the one side of the screen, wherein at least one LED Lamp is correspondingly arranged in the multiple light trough respectively.
- 5. optical finger print module according to claim 4, it is characterised in that the annulus is straight-flanked ring band or circular rings Band.
- 6. optical finger print module according to claim 4, it is characterised in that the fingerprint recognition core is surrounded on the annulus Light shield layer is provided with the medial surface of piece, the light shield layer is used to stop that the light that at least one LED is sent exposes to On the fingerprint recognition chip.
- 7. optical finger print module according to claim 6, it is characterised in that the material of the light shield layer be black plastic or Person's black coating.
- 8. optical finger print module according to claim 4, it is characterised in that the annulus is towards in the one side of the screen It is provided with the photic zone of the light sent for transmiting at least one LED.
- 9. optical finger print module according to claim 8, it is characterised in that the euphotic material is perspex.
- 10. a kind of mobile terminal, it is characterised in that the mobile terminal includes the optics as described in any one of claim 1 to 9 Fingerprint module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710805569.9A CN107644202B (en) | 2017-09-08 | 2017-09-08 | Optical fingerprint module and mobile terminal |
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|---|---|---|---|
| CN201710805569.9A CN107644202B (en) | 2017-09-08 | 2017-09-08 | Optical fingerprint module and mobile terminal |
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| CN107644202A true CN107644202A (en) | 2018-01-30 |
| CN107644202B CN107644202B (en) | 2021-01-08 |
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| CN108491833A (en) * | 2018-05-22 | 2018-09-04 | 昆山丘钛微电子科技有限公司 | A kind of optical finger print module and mobile terminal |
| CN108985258A (en) * | 2018-05-23 | 2018-12-11 | 友达光电股份有限公司 | Optical detection device and detection method thereof |
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| CN108491833A (en) * | 2018-05-22 | 2018-09-04 | 昆山丘钛微电子科技有限公司 | A kind of optical finger print module and mobile terminal |
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| CN108985258A (en) * | 2018-05-23 | 2018-12-11 | 友达光电股份有限公司 | Optical detection device and detection method thereof |
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| CN109062333A (en) * | 2018-07-26 | 2018-12-21 | 维沃移动通信有限公司 | A kind of mobile terminal |
| CN109147569A (en) * | 2018-08-13 | 2019-01-04 | 武汉华星光电半导体显示技术有限公司 | display module and its corresponding display device |
| CN109034103A (en) * | 2018-08-14 | 2018-12-18 | Oppo广东移动通信有限公司 | Electronic equipment, electrochromism portion control method and storage medium |
| CN109034103B (en) * | 2018-08-14 | 2020-09-22 | Oppo广东移动通信有限公司 | Electronic device, electrochromic portion control method, and storage medium |
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| WO2020034119A1 (en) * | 2018-08-15 | 2020-02-20 | 深圳市汇顶科技股份有限公司 | Below-screen optical fingerprint recognition system, backlight module, display screen, and electronic device |
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| WO2020073165A1 (en) * | 2018-10-08 | 2020-04-16 | 深圳市汇顶科技股份有限公司 | Fingerprint detection apparatus and method and electronic device |
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