CN106803076A - A kind of method and system of fingerprint identification function embedded in display screen - Google Patents
A kind of method and system of fingerprint identification function embedded in display screen Download PDFInfo
- Publication number
- CN106803076A CN106803076A CN201710028539.1A CN201710028539A CN106803076A CN 106803076 A CN106803076 A CN 106803076A CN 201710028539 A CN201710028539 A CN 201710028539A CN 106803076 A CN106803076 A CN 106803076A
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- display screen
- touch control
- identification function
- control electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The present invention discloses a kind of method and system of fingerprint identification function embedded in display screen, and method includes step：Touch control electrode is finely divided, touch control electrode is divided into the thin electrode of some equal portions；When display screen detects fingerprint, drive electron waves to move by strengthening voltage and current, to obtain the electric capacity between fingerprint peak valley, then carry out digital conversion, obtain fingerprint graph, realize fingerprint recognition.Directly be embedded into fingerprint recognition in display screen by the present invention, under the design condition for not reducing screen accounting, can equally carry out fingerprint recognition, while fingerprint can be allowed to be read out and unlock in the place that display screen is arbitrarily designated, increased new function.
Description
Technical field
The present invention relates to fingerprint recognition field, more particularly to a kind of fingerprint identification function embedded in display screen method and
System.
Background technology
With the popularization of application of the fingerprint recognition in the mobile terminals such as mobile phone, in increasing fingerprint hardware device all
Start to be implanted into fingerprint module, but in the implantation process of fingerprint module, the structure of mobile phone certainly will want slot milling to lay fingerprint
Module, especially under conditions of screen accounting high is most sought at present, can cause to bring the change that can not be obstructed to the global design of mobile phone.
As depicted in figs. 1 and 2, electrode of the prior art is two-layer electrode, and it includes first electrode 10, film 11 and second successively
Electrode 12, and electrode adds gap in 6mm or so, the capacitive potentials that such electrode is differentiated between identification fingerprint far from enough are poor,
That is, existing display screen cannot realize fingerprint identification function.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, fingerprint recognition is embedded in it is an object of the invention to provide one kind in display screen
The method and system of function, it is intended to solve fingerprint module in existing fingerprint identification device and take up room greatly, brought not to design
Just problem.
Technical scheme is as follows：
A kind of method of fingerprint identification function embedded in display screen, wherein, including step：
Touch control electrode is finely divided, touch control electrode is divided into the thin electrode of some equal portions；
When display screen detects fingerprint, drive electron waves to move by strengthening voltage and current, to obtain fingerprint peak valley between
Electric capacity, then carry out digital conversion, obtain fingerprint graph, realize fingerprint recognition.
The described method of embedded fingerprint identification function in display screen, wherein, touch control electrode is divided into 100 equal portions.
The described method of embedded fingerprint identification function in display screen, wherein, when display screen is in non-released state,
Finger-print region is shown in the fingerprint detection region of display screen, and points out the user to carry out unlocked by fingerprint.
The described method of embedded fingerprint identification function in display screen, wherein, when display screen is in released state, root
Touch control operation is carried out according to the fingerprint of identification.
The described method of embedded fingerprint identification function in display screen, wherein, the display screen includes double-deck touch-control electricity
Pole and the film between double-deck touch control electrode.
A kind of system of fingerprint identification function embedded in display screen, wherein, including：
Subdivision module, for being finely divided to touch control electrode, touch control electrode is divided into the thin electrode of some equal portions；
Identification module, for when display screen detects fingerprint, driving electron waves to move by strengthening voltage and current, to obtain
Electric capacity between print peak valley, then carries out digital conversion, obtains fingerprint graph, realizes fingerprint recognition.
The described system of embedded fingerprint identification function in display screen, wherein, touch control electrode is divided into 100 equal portions.
The described system of embedded fingerprint identification function in display screen, wherein, when display screen is in non-released state,
Finger-print region is shown in the fingerprint detection region of display screen, and points out the user to carry out unlocked by fingerprint.
The described system of embedded fingerprint identification function in display screen, wherein, when display screen is in released state, root
Touch control operation is carried out according to the fingerprint of identification.
The described system of embedded fingerprint identification function in display screen, wherein, the display screen includes double-deck touch-control electricity
Pole and the film between double-deck touch control electrode.
Beneficial effect：Directly be embedded into fingerprint recognition in display screen by the present invention, is not reducing the design condition of screen accounting
Under, fingerprint recognition can be equally carried out, while fingerprint can be allowed to be read out and unlock in the place that display screen is arbitrarily designated,
Increased new function.
Brief description of the drawings
Fig. 1 is the structural representation of touch control electrode in the prior art.
Fig. 2 is the schematic cross-section in A-A faces in Fig. 1.
Fig. 3 is the structural representation of touch control electrode in the present invention.
Fig. 4 is the partial enlarged drawing of part B in Fig. 3.
Fig. 5 is electron motion orientation principle figure in the present invention.
Fig. 6 is the schematic diagram that touch control electrode realizes fingerprint identification function in the present invention.
Specific embodiment
The present invention provides a kind of method and system of fingerprint identification function embedded in display screen, to make mesh of the invention
, technical scheme and effect it is clearer, clear and definite, the present invention is described in more detail below.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
A kind of method preferred embodiment of fingerprint identification function embedded in display screen provided by the present invention, it includes step
Suddenly：
Touch control electrode is finely divided, touch control electrode is divided into the thin electrode of some equal portions；
When display screen detects fingerprint, drive electron waves to move by strengthening voltage and current, to obtain fingerprint peak valley between
Electric capacity, then carry out digital conversion, obtain fingerprint graph, realize fingerprint recognition.
Fingerprint recognition is directly embedded into display screen by the present invention（Touch-screen）In, under the design condition for not reducing screen accounting
Fingerprint recognition can be equally carried out, while the place that fingerprint can be arbitrarily designated in display screen is read out and unlocks, is improved
Related Consumer's Experience.Innovation of the present invention in principle and structure, using current touch technology, by the place to touch control electrode
Reason is reached algorithmically while fingerprint recognition and touch-control can be used.
Principle of the invention is described in detail below.
Display screen of the invention includes double-deck touch control electrode and the film between double-deck touch control electrode, specifically may be used
Referring to Fig. 6, successively including first electrode 10（That is the first touch control electrode）, film 11, second electrode 12（That is second touch control electrode）,
Glass 13 is provided with second electrode 12.Fingerprint have crest and trough point, the gap between adjacent crest and trough exists
0.5mm or so, is unfavorable for that chip is driven to its power due to line too much.As shown in Figure 3 and Figure 4, single touch control electrode sheet
The width a of body is 3mm, and the gap b of adjacent touch electrode is 6mm, so present invention selection is entered in an electrode of touch control electrode
Row subdivision, the electrode width in 6mm gaps is big according to 30 μm/30 μm (electrode is slightly that 30 μm and interelectrode space are respectively 30 μm)
100 thin electrodes can about be segmented out（Referred to as grating electrode）.I.e. can be divided into for an electrode in touch control electrode by the present invention
100 equal portions.
Each thin electrode its identification, wherein 0.236 is that 6mm is corresponding
Inch.The PPI=423 calculated by above-mentioned formula, more than the requirement that conventional fingerprint recognizes PPI=308.
Due in the case where electrode is very thin, by capacitance equation C=ε S/4 π kd（ε dielectric constants, face between S battery lead plates
Product, k is electrostatic force constant, and d is the distance between pole plate）Understand, unique variable is S in the case where electrode attenuates, be changed into former
The 1/100 of electrode, that is, capacitance signal decays to original 1/100.The fingerprint signal of so finger is under the present conditions
Cannot be identified.Therefore key of the present invention is that the signal for how strengthening correlation, while electrode is integrated into electric capacity electricity
Pole, while realizing touch-control and fingerprint recognition.
Capacitance C=Q/U, Q are electron charge units coulomb, and U is the voltage between pole plate.And electric field between electrodes intensity E=QU/
2.So want holding capacitor amount constant, while electric-field intensity increases, it is necessary to which Q, U are with the increase of identical multiple.Because Q=It（I
It is electric current, t is the time）, it is exactly to increase electric current to increase electron charge in the case where the time is certain.Under high electric field and voltage,
Electron waves, and electronics drift phenomenon can be produced.As shown in figure 5, electronics direction can move along the opposite direction of electric field line.
So the present invention just drives electron waves to move by strengthening voltage and current, to obtain the electricity between fingerprint peak valley
Hold, then carry out digital conversion, obtain fingerprint graph, realize fingerprint recognition.
Specifically, electron particles have wave-particle dimorphism, the wavelength of electron waves, h is planck constant, and m is electronics
Quality, v is electron emission initial velocity.Because, e is electrically charged electron institute, is constant.So, i.e. ripple
Length is that voltage is inversely proportional, electronics in glass medium with electric field force in the presence of communication effect of sharing the same light it is the same, have refraction and reflect
Effect.
As shown in fig. 6, electron waves are reflected when electron waves touch fingerprint crest, by receiving layer（First electrode 10）
Receive electronics by C=Q/U, draw the capacitance on the position, then carry out being converted into digital value by ADC.If electron waves are met
During to fingerprint trough, electron waves are absorbed by the skin after producing refraction, and capacitance is 0 on node.Thus collect fingerprint image
Shape.Fingerprint pairing functionally is carried out according to the fingerprint graph for collecting and is verified.
Further, when display screen is in non-released state, finger-print region is shown in the fingerprint detection region of display screen, and carry
Show that user carries out unlocked by fingerprint.
That is, when display screen is in the lock state, if detecting fingerprint input, is shown in fingerprint detection region and referred to
Line region, so that point out the user to carry out fingerprint input in finger-print region, to be unlocked.
Further, when display screen is in released state, the fingerprint according to identification carries out touch control operation.
That is, when display screen is in released state, then the fingerprint according to identification carries out touch control operation.Namely
Say, the thin electric pole short circuit of fingerprint is distributed into a touch control electrode, as touch sensing.
The present invention detects that the weak capacitive between fingerprint peak valley changes by 100 parts of thin electrode, due to common routine
Capacitance detecting cannot detect so faint voltage change.So the present invention can be moved by high drive electron waves, using electricity
Field force significantly distinguishes the voltage between peak valley, because the distance of peak valley skin and electrode is different, so both capacitive fields
Voltage is also different.So as to identify and distinguish between the problem of fingerprint peak valley.That is the present invention passes through voltage management and electric field force
The function that existing display screen cannot be realized is realized to the driving of electron waves.
Based on the above method, the present invention also provides a kind of system of fingerprint identification function embedded in display screen and preferably implements
Example, it includes：
Subdivision module, for being finely divided to touch control electrode, touch control electrode is divided into the thin electrode of some equal portions；
Identification module, for when display screen detects fingerprint, driving electron waves to move by strengthening voltage and current, to obtain
Electric capacity between print peak valley, then carries out digital conversion, obtains fingerprint graph, realizes fingerprint recognition.
Further, touch control electrode is divided into 100 equal portions.
Further, when display screen is in non-released state, finger-print region is shown in the fingerprint detection region of display screen, and carry
Show that user carries out unlocked by fingerprint.
Further, when display screen is in released state, the fingerprint according to identification carries out touch control operation.
Further, the display screen includes double-deck touch control electrode and the film between double-deck touch control electrode.
In sum, directly be embedded into fingerprint recognition in display screen by the present invention, is not reducing the design condition of screen accounting
Under, fingerprint recognition can be equally carried out, while fingerprint can be allowed to be read out and unlock in the place that display screen is arbitrarily designated,
Increased new function.
It should be appreciated that application of the invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or converted, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Shield scope.
Claims (10)
1. a kind of method of fingerprint identification function embedded in display screen, it is characterised in that including step：
Touch control electrode is finely divided, touch control electrode is divided into the thin electrode of some equal portions；
When display screen detects fingerprint, drive electron waves to move by strengthening voltage and current, to obtain fingerprint peak valley between
Electric capacity, then carry out digital conversion, obtain fingerprint graph, realize fingerprint recognition.
2. the method for fingerprint identification function embedded in display screen according to claim 1, it is characterised in that by touch-control electricity
Pole is divided into 100 equal portions.
3. the method for fingerprint identification function embedded in display screen according to claim 1, it is characterised in that work as display screen
During in non-released state, finger-print region is shown in the fingerprint detection region of display screen, and point out the user to carry out unlocked by fingerprint.
4. the method for fingerprint identification function embedded in display screen according to claim 1, it is characterised in that work as display screen
During in released state, the fingerprint according to identification carries out touch control operation.
5. the method for fingerprint identification function embedded in display screen according to claim 1, it is characterised in that the display
Screen includes double-deck touch control electrode and the film between double-deck touch control electrode.
6. a kind of system of fingerprint identification function embedded in display screen, it is characterised in that including：
Subdivision module, for being finely divided to touch control electrode, touch control electrode is divided into the thin electrode of some equal portions；
Identification module, for when display screen detects fingerprint, driving electron waves to move by strengthening voltage and current, to obtain
Electric capacity between print peak valley, then carries out digital conversion, obtains fingerprint graph, realizes fingerprint recognition.
7. the system of fingerprint identification function embedded in display screen according to claim 6, it is characterised in that by touch-control electricity
Pole is divided into 100 equal portions.
8. the system of fingerprint identification function embedded in display screen according to claim 6, it is characterised in that work as display screen
During in non-released state, finger-print region is shown in the fingerprint detection region of display screen, and point out the user to carry out unlocked by fingerprint.
9. the system of fingerprint identification function embedded in display screen according to claim 6, it is characterised in that work as display screen
During in released state, the fingerprint according to identification carries out touch control operation.
10. the system of fingerprint identification function embedded in display screen according to claim 6, it is characterised in that described aobvious
Display screen includes double-deck touch control electrode and the film between double-deck touch control electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028539.1A CN106803076A (en) | 2017-01-16 | 2017-01-16 | A kind of method and system of fingerprint identification function embedded in display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028539.1A CN106803076A (en) | 2017-01-16 | 2017-01-16 | A kind of method and system of fingerprint identification function embedded in display screen |
Publications (1)
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| CN106803076A true CN106803076A (en) | 2017-06-06 |
Family
ID=58985738
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| CN201710028539.1A Pending CN106803076A (en) | 2017-01-16 | 2017-01-16 | A kind of method and system of fingerprint identification function embedded in display screen |
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Cited By (9)
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| CN107203751A (en) * | 2017-05-24 | 2017-09-26 | 厦门天马微电子有限公司 | Display panel and display device |
| CN107346195A (en) * | 2017-06-29 | 2017-11-14 | 武汉华星光电技术有限公司 | Touch-control display panel and touch control display apparatus |
| CN109164972A (en) * | 2018-08-23 | 2019-01-08 | Oppo（重庆）智能科技有限公司 | A kind of control method, control device and mobile terminal |
| CN109828696A (en) * | 2019-01-09 | 2019-05-31 | 昆山国显光电有限公司 | Display panel and display screen |
| CN109992154A (en) * | 2019-03-14 | 2019-07-09 | 南京观海微电子有限公司 | Touch screen and fingerprint identification method with comprehensive screen fingerprint identification function |
| CN110007799A (en) * | 2019-04-10 | 2019-07-12 | 京东方科技集团股份有限公司 | A kind of touch control method of display panel and display panel |
| US10739900B2 (en) | 2017-06-29 | 2020-08-11 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Touch display panel having fingerprint recognition device integrated therewith and touch display device including same |
| WO2020191882A1 (en) * | 2019-03-27 | 2020-10-01 | 武汉华星光电技术有限公司 | Apparatus for touch control and fingerprint recognition |
| CN116704561A (en) * | 2022-12-30 | 2023-09-05 | 荣耀终端有限公司 | Touch screen, fingerprint identification method and electronic equipment |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107203751A (en) * | 2017-05-24 | 2017-09-26 | 厦门天马微电子有限公司 | Display panel and display device |
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| CN109828696A (en) * | 2019-01-09 | 2019-05-31 | 昆山国显光电有限公司 | Display panel and display screen |
| CN109992154A (en) * | 2019-03-14 | 2019-07-09 | 南京观海微电子有限公司 | Touch screen and fingerprint identification method with comprehensive screen fingerprint identification function |
| WO2020191882A1 (en) * | 2019-03-27 | 2020-10-01 | 武汉华星光电技术有限公司 | Apparatus for touch control and fingerprint recognition |
| CN110007799A (en) * | 2019-04-10 | 2019-07-12 | 京东方科技集团股份有限公司 | A kind of touch control method of display panel and display panel |
| CN116704561A (en) * | 2022-12-30 | 2023-09-05 | 荣耀终端有限公司 | Touch screen, fingerprint identification method and electronic equipment |
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