CN109863508A - Fingerprint recognition mould group, LCD device and terminal device under LCD screen - Google Patents
Fingerprint recognition mould group, LCD device and terminal device under LCD screen Download PDFInfo
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- CN109863508A CN109863508A CN201980000120.2A CN201980000120A CN109863508A CN 109863508 A CN109863508 A CN 109863508A CN 201980000120 A CN201980000120 A CN 201980000120A CN 109863508 A CN109863508 A CN 109863508A
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- 230000003287 optical effect Effects 0.000 claims abstract description 175
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 26
- 238000010586 diagram Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The application provides fingerprint recognition mould group, LCD device and terminal device under a kind of LCD screen, wherein, backlight module is provided with above fingerprint recognition mould group under LCD screen, backlight module includes: the first prism film, fingerprint recognition mould group includes: the first optical sensor and the first lens under LCD screen, and the projection of the first lens in the vertical direction is located at the fringe region of the first optical sensor；First lens are used to receive the reflected light of fingerprint generation, and reflected light is focused on the first optical sensor, and the first optical sensor is used to convert reflected light to electric signal, and electric signal is for generating fingerprint image.To ensure that the integrality of fingerprint image, and then fingerprint identification process is promoted to smoothly complete.
Description
Technical field
This application involves fingerprint recognition mould group under fingerprint identification technology field more particularly to a kind of LCD screen, LCD device and
Terminal device.
Background technique
Fingerprint identification technology is usually applied in the display screen of the intelligent terminals such as mobile phone, tablet computer.The following liquid crystal display
(Liquid Crystal Display, LCD) screen will occupy a tiny space in field of display screen.
Wherein, LCD screen successively includes: fingerprint recognition under glass plate, liquid crystal layer, backlight module and LCD screen from top to bottom
Mould group, side further includes light emitting diode (Light Emitting Diode, LED) under the glass plate, the backlight module from up to
Under successively include: prism film, even smooth film, light guide plate, reflectance coating and steel plate.The effect of prism film is former using refraction and total reflection
Managing makes the light of dispersion concentrate on certain angle issues from backlight.Fingerprint recognition mould group is from top to bottom successively under LCD screen
It include: lens and optical sensor, lens are used to receive the reflected light of fingerprint generation, and the reflected light is focused to optical sensing
On device, optical sensor is used to convert electric signal for reflected light, and by electric signal transmission to processor so that processor according to
Electric signal generates fingerprint image.
However, fingerprint image can exist from intermediate divided phenomenon, to affect fingerprint due to the presence of prism film
The integrality of image, so that fingerprint identification process is difficult to complete.
Summary of the invention
The application provides fingerprint recognition mould group, LCD device and terminal device under a kind of LCD screen.To ensure that fingerprint image
The integrality of picture, and then fingerprint identification process is promoted to smoothly complete.
In a first aspect, the application provides fingerprint recognition mould group under a kind of LCD screen, suitable for the LCD screen with backlight module
Act, fingerprint recognition mould group includes: the first optical sensor and the first lens, the throwing of the first lens in the vertical direction under LCD screen
Shadow is located at the fringe region of the first optical sensor；First lens are used to receive the reflected light of fingerprint generation, and reflected light is gathered
On coke to the first optical sensor, the first optical sensor is used to convert reflected light to electric signal, and electric signal refers to for generating
Print image.
Based on this fingerprint image generated there is no from intermediate divided phenomenon, to ensure that fingerprint image
Integrality, and then fingerprint identification process is promoted to smoothly complete.
Optionally, fingerprint recognition mould group includes: two the first optical sensors and two the first lens under LCD screen, and two
First optical sensor and two the first lens correspond；Backlight module includes the first prism film, two the first optical sensings
Device is arranged according to the length direction of the first prism film.
The corresponding fingerprint of each electric signal can be generated in the electric signal obtained by multiple first optical sensors, processor
Image, and splicing is carried out to fingerprint image, so as to get bigger fingerprint image, and then it is convenient for fingerprint recognition.
Optionally, backlight module further include: the second prism film, the length of the length direction of the second prism film and the first prism film
It is orthogonal to spend direction, fingerprint recognition mould group under LCD screen further include: two the second optical sensors and two the second lens, two the
Two optical sensors and two the second lens correspond；Two the second optical sensors according to the first prism film length direction
Arrangement, wherein second optical sensor and first optical sensor are arranged according to the length direction of the second prism film,
Another second optical sensor and another first optical sensor are arranged according to the length direction of the second prism film.
The application provides fingerprint recognition mould group under a kind of LCD screen, and fingerprint recognition mould group may include: two under the LCD screen
First lens, two the first optical sensors, two the second lens and two the second optical sensors, pass through two the first optics
The corresponding fingerprint image of each electric signal can be generated in the electric signal that sensor and two optical sensors respectively obtain, processor
Picture, and splicing is carried out to fingerprint image, so as to get bigger fingerprint image, and then it is convenient for fingerprint recognition.Separately
Outside, fingerprint recognition mould group is suitable for the scene relatively high to LCD screen brightness requirement under this LCD screen.
Second aspect, the application also provides fingerprint recognition mould group under a kind of LCD screen, suitable for the LCD with backlight module
Screen, fingerprint recognition mould group includes: the first optical sensor and the first lens under LCD screen, and the first lens are relative to the first prism
Film is obliquely installed, and the angle of the first lens and the first prism film is greater than 0 degree and less than 45 degree.First lens are for receiving fingerprint production
Raw reflected light, and reflected light is focused on the first optical sensor, the first optical sensor is for converting reflected light to
Electric signal, electric signal is for generating fingerprint image.
Based on this fingerprint image generated there is no from intermediate divided phenomenon, to ensure that fingerprint image
Integrality, and then fingerprint identification process is promoted to smoothly complete.
Optionally, backlight module includes the first prism film, and the first optical sensor is arranged in parallel with the first prism film.
Optionally, the first optical sensor is arranged in parallel with the first lens.
Optionally, fingerprint recognition mould group includes: two the first optical sensors and two the first lens under LCD screen, and two
First optical sensor and two the first lens correspond；Two the first optical sensors according to the first prism film length side
To arrangement.
The corresponding fingerprint of each electric signal can be generated in the electric signal obtained by multiple first optical sensors, processor
Image, and splicing is carried out to fingerprint image, so as to get bigger fingerprint image, and then it is convenient for fingerprint recognition.
Optionally, backlight module further include: the second prism film, the length of the length direction of the second prism film and the first prism film
It is orthogonal to spend direction, fingerprint recognition mould group under LCD screen further include: two the second optical sensors and two the second lens, two the
Two optical sensors and two the second lens correspond；Two the second optical sensors according to the first prism film length direction
Arrangement, wherein second optical sensor and first optical sensor are arranged according to the length direction of the second prism film,
Another second optical sensor and another first optical sensor are arranged according to the length direction of the second prism film.
The application provides fingerprint recognition mould group under a kind of LCD screen, and fingerprint recognition mould group may include: two under the LCD screen
First lens, two the first optical sensors, two the second lens and two the second optical sensors, pass through two the first optics
The corresponding fingerprint image of each electric signal can be generated in the electric signal that sensor and two optical sensors respectively obtain, processor
Picture, and splicing is carried out to fingerprint image, so as to get bigger fingerprint image, and then it is convenient for fingerprint recognition.Separately
Outside, fingerprint recognition mould group is suitable for the scene relatively high to LCD screen brightness requirement under this LCD screen.
The third aspect, the application provide a kind of LCD device, comprising: the backlight module with the first prism film and such as first
Fingerprint recognition mould group under aspect, the optional way of second aspect or first aspect, the LCD screen of the optional way of second aspect.
Fourth aspect, the application provide a kind of terminal device, comprising: processor and the LCD device such as the third aspect,
In, processor and LCD device are electrically connected.
Optionally, it if LCD device includes multiple first optical sensors and/or multiple second optical sensors, handles
The electric signal that device is used to respectively be obtained according to each first optical sensor or each second optical sensor generates corresponding finger
Print image, and multiple first optical sensors and/or multiple corresponding fingerprint images of second optical sensor are spelled
It connects.
The application provides fingerprint recognition mould group, LCD device and terminal device under a kind of LCD screen, wherein fingerprint under LCD screen
Identify that mould group is suitable for the LCD screen with backlight module, under LCD screen fingerprint recognition mould group include: the first optical sensor and
First lens, the projection of the first lens in the vertical direction are located at the fringe region of the first optical sensor；First lens are used for
The reflected light that fingerprint generates is received, and reflected light is focused on the first optical sensor, the first optical sensor is used for will be anti-
It penetrates light and is converted into electric signal, electric signal is for generating fingerprint image.Based on this fingerprint image generated, there is no from centre
Divided phenomenon to ensure that the integrality of fingerprint image, and then promotes fingerprint identification process to smoothly complete.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this Shen
Some embodiments please for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic cross-section for the LCD that one embodiment of the application provides；
Fig. 2 is the partial schematic diagram of prism film and prism film that one embodiment of the application provides；
Fig. 3 is the schematic diagram for the fingerprint image that one embodiment of the application provides；
Fig. 4 is the schematic diagram of fingerprint recognition mould group under the LCD screen that one embodiment of the application provides；
Fig. 5 is the schematic diagram for the fingerprint image that one embodiment of the application provides；
Fig. 6 is the partial cross-sectional view for the LCD that one embodiment of the application provides；
Fig. 7 is the partial cross-sectional view for the LCD that one embodiment of the application provides；
Fig. 8 A to Fig. 8 C is the partial schematic diagram for the LCD screen that one embodiment of the application provides；
Fig. 9 A to Fig. 9 C is the instruction image schematic diagram that one embodiment of the application provides；
Figure 10 is the positional diagram of the normal vector for two prism films that one embodiment of the application provides；
Figure 11 is the schematic diagram for the fingerprint image that one embodiment of the application provides；
Figure 12 is the top view of lens and optical sensor that one embodiment of the application provides；
Figure 13 is the flow chart for the fingerprint identification method that one embodiment of the application provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so as to embodiments herein described herein, such as can be with
Sequence other than those of illustrating or describing herein is implemented.In addition, term " includes " and " having " and their times
What is deformed, it is intended that cover it is non-exclusive include, for example, contain the process, method of a series of steps or units, system,
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for
The intrinsic other step or units of these process, methods, product or equipment.
Fig. 1 is the schematic cross-section for the LCD screen that one embodiment of the application provides, and is carried out along direction AB to LCD screen
Section obtains the section of LCD screen as shown in Figure 1, as shown in Figure 1, the LCD screen successively includes: glass plate from top to bottom
11, fingerprint recognition mould group 14 under liquid crystal layer 12, backlight module 13 and LCD screen, below glass plate 11 further include: LED15,
For LED15 for shining, which successively includes: prism film 131, even smooth film 132, light guide plate 133, reflection from top to bottom
Film 134 and steel plate 135.The effect of prism film 131 be using refraction and total reflection principle make dispersion light concentrate on it is certain
Angle is issued from backlight.Fingerprint recognition mould group 14 successively includes: lens 141 and optical sensor from top to bottom under LCD screen
142, lens 141 are used to receive the reflected light of fingerprint generation, and the reflected light is focused on optical sensor 142, and optics passes
Sensor 142 is used to convert reflected light to electric signal, and by electric signal transmission to processor, so that processor is raw according to electric signal
At fingerprint image.
However, usually prism film specification is 90/50, i.e., prism angle is 90 degree, and the prism period is 50 microns, so-called prism
Period refers to the distance of two neighboring prism spike.Specifically, Fig. 2 is the prism film and prism that one embodiment of the application provides
The partial schematic diagram of film, as shown in Fig. 2, top is prism film, lower section is the partial schematic diagram of prism film, and the angle B is prism angle,
It can be equal to 90 degree, and d is the prism period.Since the light that prism membrane structure will limit low-angle enters optical sensor, such as:
As shown in Fig. 2, according to total reflection law, the incident ray of substantially parallel prism could form vertical emergent ray, to reach
Optical sensor, however, the incident ray due to substantially parallel prism is difficult to realize, form vertical emergent ray simultaneously
It is unrealistic, as shown in figure 3, the phenomenon have fingerprint image can from intermediate divided phenomenon, to affect fingerprint image
The integrality of picture, so that fingerprint identification process is difficult to complete.
In order to solve the above-mentioned technical problem, the application provides fingerprint recognition mould group, LCD device and terminal under a kind of LCD screen
Equipment.
It describes in detail first below to fingerprint recognition mould group under LCD screen:
The application provides fingerprint recognition mould group under a kind of LCD screen, wherein as shown in Figure 1, the mould group is suitable for having backlight
The liquid crystal display LCD screen of mould group, fingerprint recognition mould group includes: the first optical sensor and the first lens under LCD screen, this first
Lens are between the first optical sensor and the first prism film.First lens are used to receive the reflected light of fingerprint generation, and will
Reflected light focuses on the first optical sensor, and the first optical sensor is used to convert reflected light to electric signal, and electric signal is used
In generation fingerprint image.
A kind of possible design: the projection of the first lens in the vertical direction is located at the edge of first optical sensor
Region.Fig. 4 is the top view of the first lens and the first optical sensor that one embodiment of the application provides, as shown in figure 4, can be with
Find out that the projection of the first lens 51 in the vertical direction is located at the fringe region of the first optical sensor 52, the application is to the edge
Area size and shape are with no restrictions.It should be noted that the first lens 51 are in the projection position of vertical direction in the prior art
In the central area of the first optical sensor 52.As shown in figure 3, the phenomenon have fingerprint image can from intermediate divided
Phenomenon.However, Fig. 5 is the schematic diagram for the fingerprint image that one embodiment of the application provides, as shown in figure 5, relative to the first lens
51 projecting positioned at the central area of the first optical sensor 52, when the throwing of the first lens 51 in the vertical direction in vertical direction
When shadow is located at the fringe region of the first optical sensor 52, the fingerprint image as shown in Figure 5 ultimately generated can eliminate fingerprint
Image is from intermediate divided phenomenon.
Alternatively possible design: the first lens are obliquely installed relative to the first prism film, wherein the first lens and first
The value range of the angle of prism film is 0~45 degree, and the first optical sensor is parallel with the first prism film.Wherein in the prior art
First lens are parallel with the first prism film, in this application, since the first lens are obliquely installed relative to the first prism film, finally
The fingerprint image as shown in Figure 5 generated can eliminate fingerprint image from intermediate divided phenomenon.Fig. 6 is the implementation of the application one
The partial cross-sectional view for the LCD that example provides, as shown in fig. 6, when the first lens 71 are obliquely installed relative to the first prism film 72, first
The value range of the angle of lens 71 and the first prism film 72 is 0~45 degree, and the first optical sensing 73 and the first prism film 72
When parallel, the fingerprint image as shown in Figure 5 ultimately generated can eliminate fingerprint image from intermediate divided phenomenon.
Another possible design: the first lens are obliquely installed relative to the first prism film, and the first optical sensor with
First lens are parallel, wherein the value range of the angle of the first lens and the first prism film is 0~45 degree.The wherein prior art
In the first lens it is parallel with the first prism film, and the first lens are parallel with the first optical sensor, in this application, due to first
Lens are obliquely installed relative to the first prism film, and the first optical sensor is parallel with the first lens, i.e. the first optical sensor
Be also to be obliquely installed relative to the first prism film, the fingerprint image as shown in Figure 5 ultimately generated can eliminate fingerprint image from
Intermediate divided phenomenon.Fig. 7 is the partial cross-sectional view for the LCD that one embodiment of the application provides, as shown in fig. 7, working as first thoroughly
Mirror 81 is obliquely installed relative to the first prism film 82, and the value range of the angle of the first lens 81 and the first prism film 82 is 0~
45 degree, and when the first optical sensor 83 is parallel with the first prism film 82, the finger as shown in Figure 5 ultimately generated in this case
Print image can eliminate fingerprint image from intermediate divided phenomenon.
To sum up, the embodiment of the present application provides fingerprint recognition mould group under a kind of LCD screen, fingerprint recognition mould group under the LCD screen
It include: the first optical sensor and the first lens, the first lens are between the first optical sensor and first prism film；
Wherein, the projection of the first lens in the vertical direction is located at the fringe region of the first optical sensor, alternatively, the first lens are opposite
It is obliquely installed in the first prism film, the angle of the first lens and the first prism film is greater than 0 degree and less than 45 degree.It is generated based on this
Fingerprint image there is no from intermediate divided phenomenon, to ensure that the integrality of fingerprint image, and then promote fingerprint
Identification process smoothly completes.
Optionally, under above-mentioned LCD screen fingerprint recognition mould group include at least one first optical sensor and at least one the
One lens, the first optical sensor of wherein at least one and at least one first lens correspond.
Specifically, LCD screen is intended to ultrathin increasingly in order to meet user demand, therefore, fingerprint recognition under LCD screen
Mould group needs to have the characteristics that ultrathin, this will imply that the terminal device with LCD screen can not adjust bigger object distance at present,
Bigger fingerprint image is obtained, is based on this, in this application, fingerprint recognition mould group may include multiple first optics under LCD screen
Sensor and multiple first lens, plurality of first optical sensor and multiple first lens correspond.Each first light
After sensor gets electric signal, processor handles each electric signal, to obtain the corresponding finger of each electric signal
Print image, further, processor can splice multiple fingerprint images, to obtain final fingerprint image.Such as: figure
8A to Fig. 8 C is that the partial schematic diagram for the LCD screen that one embodiment of the application provides refers under the LCD screen as shown in Fig. 8 A to Fig. 8 C
Line identifies that mould group includes: two the first optical sensors 91 and two the first lens 92, two the first optical sensors 91 and two
A first lens 92 correspond；Wherein, two the first optical sensors 91 are arranged according to the length direction of the first prism film 93.
There is the incident ray being overlapped in two the first lens 92.It should be noted that the application is not limited to two the first optical sensors
It arranges according to the length direction of the first prism film, such as: assuming that regarding two the first optical sensors as two points, then pass through
The angle of the length direction of straight line determined by two points and the first prism film can be greater than or equal to 0 degree.
As shown in Figure 8 A, the first lens 92 are located at the fringe region of the first optical sensor 91 in the projection of vertical direction.
As shown in Figure 8 B, the first lens 92 are obliquely installed relative to the first prism film 93, and the first optical sensor 91 with
First prism film 93 is parallel, wherein the angle of the first lens 92 and the first prism film 93 is greater than 0 degree and less than 45 degree.
As shown in Figure 8 C, the first lens 92 are obliquely installed relative to the first prism film 93, and the first optical sensor 91 with
First lens 92 are parallel, wherein the angle of the first lens 92 and the first prism film 93 is greater than 0 degree and less than 45 degree.
Further, Fig. 9 A to Fig. 9 C is the instruction image schematic diagram that one embodiment of the application provides, and wherein Fig. 9 A is relied on
Electric signal caused by first optical sensor 91 in left side, fingerprint image generated in Fig. 8 A, Fig. 8 B or Fig. 8 C.Fig. 9 B
Dependent on electric signal caused by first optical sensor 91 on right side in Fig. 8 A, Fig. 8 B or Fig. 8 C, fingerprint image generated.
Fingerprint image shown by Fig. 9 C is processor to obtained image after the splicing of fingerprint image shown in Fig. 8 A and Fig. 8 B.Its
In, processor can use existing image mosaic technology, and the application is not described this.
To sum up, the application provides fingerprint recognition mould group under a kind of LCD screen, and fingerprint recognition mould group may include: under the LCD screen
Multiple first lens and multiple first optical sensors, the electric signal obtained by multiple first optical sensors, processor can
To generate the corresponding fingerprint image of each electric signal, and splicing is carried out to fingerprint image, it is bigger so as to get
Fingerprint image, and then it is convenient for fingerprint recognition.
Further, the scene relatively high to LCD screen brightness requirement if it exists, in this case, LCD screen may include two
Layer prism film.That is, on the basis of the above embodiments, LCD further include: the second prism film, the length direction of the second prism film with
The length direction of first prism film is orthogonal, fingerprint recognition mould group under LCD screen further include: two the second optical sensors and two
Two lens, two the second optical sensors and two the second lens correspond；Two the second optical sensors are according to the second rib
The length direction of mirror film is arranged.
Specifically, Figure 10 is the positional diagram of the normal vector for two prism films that one embodiment of the application provides,
As shown in Figure 10, AB is the normal vector of the first prism film, and CD is the normal vector of the second prism film, wherein AB and CD are orthogonal, i.e., and the
One prism film and the second prism film are orthogonal.Figure 11 is the schematic diagram for the fingerprint image that one embodiment of the application provides, such as Figure 11 institute
Show, which obtains in the following way: reflected light caused by fingerprint is by two sides prism film, thoroughly into one
The reflected light is focused to the corresponding optical sensor of the prism by mirror, the lens, which converts the reflected light into electricity
Signal, and by electric signal transmission to processor, processor handles the electric signal, obtains fingerprint image as shown in figure 11
Picture.
Wherein, Figure 12 is that the top view of lens and optical sensor that one embodiment of the application provides as shown in figure 12 can
It is located at the fringe region of the first optical sensor 1302, equally, second to find out the first lens 1301 in the projection of vertical direction
Lens 1303 are located at the fringe region of the second optical sensor 1304 in the projection of vertical direction.And two the second optical sensings
Device 1304 according to the first prism film length direction arrange, two the first optical sensors 1302 according to the first prism film length
Direction arrangement, second optical sensor 1304 and first optical sensor 1302 according to the second prism film length side
To arrangement, another second optical sensor 1304 and another first optical sensor 1302 according to the second prism film length
Direction arrangement.
To sum up, the application provides fingerprint recognition mould group under a kind of LCD screen, and fingerprint recognition mould group may include: under the LCD screen
Two the first lens, two the first optical sensors, two the second lens and two the second optical sensors, pass through two first
The corresponding fingerprint of each electric signal can be generated in the electric signal that optical sensor and two optical sensors respectively obtain, processor
Image, and splicing is carried out to fingerprint image, so as to get bigger fingerprint image, and then it is convenient for fingerprint recognition.
In addition, fingerprint recognition mould group is suitable for the scene relatively high to LCD screen brightness requirement under this LCD screen.
The application also provides a kind of LCD device, wherein LCD device include: backlight module with the first prism film and
Fingerprint recognition mould group under LCD screen, fingerprint recognition mould group includes: the first optical sensor and the first lens under the LCD screen, described
First lens are between first optical sensor and first prism film；First lens are for receiving fingerprint production
Raw reflected light, and the reflected light is focused on first optical sensor, first optical sensor is used for will
The reflected light is converted into electric signal, and the electric signal is for generating fingerprint image.
A kind of possible design: the projection of the first lens in the vertical direction is located at the edge of first optical sensor
Region.
Alternatively possible design: first lens are obliquely installed relative to first prism film, and described first
Optical sensor is parallel with first prism film, wherein the angle of the first lens and the first prism film is greater than 0 degree and less than 45
Degree.
Another possible design, first lens are obliquely installed relative to first prism film, and described first
Optical sensor is parallel with first lens, wherein the angle of the first lens and the first prism film is greater than 0 degree and less than 45
Degree.
Optionally, fingerprint recognition mould group includes: two first optical sensors and two described under the LCD screen
One lens, two first optical sensors and two first lens correspond；Two first optical sensings
Device is arranged according to the length direction of first prism film.
Optionally, the LCD further include: the second prism film, the length direction of second prism film and first rib
The length direction of mirror film is orthogonal, fingerprint recognition mould group under the LCD screen further include: two the second optical sensors and two second
Lens, described two second optical sensors and described two second lens correspond；Two the second optical sensors according to
The length direction of first prism film is arranged, wherein second optical sensor and first optical sensor are according to second
The length direction of prism film is arranged, another second optical sensor and another first optical sensor are according to the second prism film
Length direction arrangement.
To sum up, the application provides a kind of LCD device, which includes fingerprint recognition mould group under above-mentioned LCD screen,
Content and effect can refer to the corresponding embodiment of fingerprint recognition mould group, the application under LCD screen and repeat no more to this.
The application also provides a kind of terminal device, comprising: processor and above-mentioned LCD device, wherein processor and LCD are filled
Set electric connection.
Optionally, it if LCD device includes multiple first optical sensors and/or multiple second optical sensors, handles
The electric signal that device is used to respectively be obtained according to each first optical sensor or each second optical sensor generates corresponding finger
Print image, and multiple first optical sensors and/or multiple corresponding fingerprint images of second optical sensor are spelled
It connects.
To sum up, the application provides a kind of terminal device, which includes fingerprint recognition mould group under above-mentioned LCD screen,
Its content and effect can refer to the corresponding embodiment of fingerprint recognition mould group, the application under LCD screen and repeat no more to this.
Figure 13 is the flow chart for the fingerprint identification method that one embodiment of the application provides, and the executing subject of this method can be
Processor in above-mentioned terminal device or the terminal device, executing subject in this way is terminal device to the party below
Method is illustrated, and wherein the terminal device includes: fingerprint recognition mould group under LCD screen, and fingerprint recognition mould group includes: under the LCD screen
Multiple optical sensors and multiple lens, multiple optical sensors and multiple lens correspond, as shown in figure 13, this method packet
Include following process:
Step S1401: terminal device obtains the electric signal that the multiple optical sensor obtains.
Step S1402: terminal device handles each electric signal, obtains the corresponding fingerprint image of each electric signal
Picture.
Step S1403: terminal device splices each fingerprint image, to obtain final fingerprint image.
Step S1404: terminal device carries out fingerprint recognition according to final fingerprint image.
Optionally, before step S1403, terminal device can carry out distortion correction using the prior art to fingerprint image
Processing, the mode that the application handles distortion correction is with no restrictions.In addition, the application is to image split-joint method and fingerprint recognition
Method is also with no restrictions.
To sum up, the application provides a kind of fingerprint identification method, is applied to include fingerprint knowledge under above-mentioned LCD screen due to this method
The terminal device of other mould group, based on this fingerprint image generated there is no from intermediate divided phenomenon, to ensure that
The integrality of fingerprint image, and then fingerprint identification process is promoted to smoothly complete.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. fingerprint recognition mould group under a kind of LCD screen, suitable for the liquid crystal display LCD screen with backlight module, which is characterized in that
Fingerprint recognition mould group includes: the first optical sensor and the first lens under the LCD screen, and first lens are in the vertical direction
Projection be located at first optical sensor fringe region；
First lens are used to receive the reflected light of fingerprint generation, and the reflected light is focused to first optical sensing
On device, first optical sensor is used to convert the reflected light to electric signal, and the electric signal is for generating fingerprint image
Picture.
2. mould group according to claim 1, which is characterized in that fingerprint recognition mould group includes: described in two under the LCD screen
First optical sensor and two first lens, two first optical sensors and two first lens are one by one
It is corresponding；
The backlight module include the first prism film, two first optical sensors according to first prism film length
Direction arrangement.
3. mould group according to claim 2, the backlight module further include: the second prism film, second prism film
Length direction is orthogonal with the length direction of first prism film, which is characterized in that fingerprint recognition mould group is also wrapped under the LCD screen
It includes: two the second optical sensors and two the second lens, described two second optical sensors and described two second lens
It corresponds；
Described two second optical sensors are arranged according to the length direction of first prism film, wherein second optics
Sensor and first optical sensor are arranged according to the length direction of second prism film, another second optical sensing
Device and another first optical sensor are arranged according to the length direction of second prism film.
4. fingerprint recognition mould group under a kind of LCD screen, suitable for the liquid crystal display LCD screen with backlight module, which is characterized in that
Fingerprint recognition mould group includes: the first optical sensor and the first lens under the LCD screen, and first lens are relative to described
One prism film is obliquely installed, and the angle of first lens and first prism film is greater than 0 degree and less than 45 degree；
First lens are used to receive the reflected light of fingerprint generation, and the reflected light is focused to first optical sensing
On device, first optical sensor is used to convert the reflected light to electric signal, and the electric signal is for generating fingerprint image
Picture.
5. mould group according to claim 4, which is characterized in that the backlight module include the first prism film, described first
Optical sensor is arranged in parallel with first prism film.
6. mould group according to claim 4, which is characterized in that first optical sensor is parallel with first lens
Setting.
7. according to the described in any item mould groups of claim 4-6, which is characterized in that fingerprint recognition mould group includes: under the LCD screen
Two first optical sensors and two first lens, two first optical sensors and two described first
Lens correspond；
Two first optical sensors are arranged according to the length direction of first prism film.
8. mould group according to claim 7, the backlight module further include: the second prism film, second prism film
Length direction is orthogonal with the length direction of first prism film, which is characterized in that fingerprint recognition mould group is also wrapped under the LCD screen
It includes: two the second optical sensors and two the second lens, described two second optical sensors and described two second lens
It corresponds；
Described two second optical sensors are arranged according to the length direction of first prism film, wherein second optics
Sensor and first optical sensor are arranged according to the length direction of second prism film, another second optical sensing
Device and another first optical sensor are arranged according to the length direction of second prism film.
9. a kind of LCD device characterized by comprising backlight module and such as claim 1,2,4-7 with the first prism film
Fingerprint recognition mould group under described in any item LCD screens.
10. LCD according to claim 9, which is characterized in that the backlight module further include: the second prism film, described
The length direction of two prism films is orthogonal with the length direction of first prism film, and fingerprint recognition mould group is also wrapped under the LCD screen
It includes: two the second optical sensors and two the second lens, described two second optical sensors and described two second lens
It corresponds；
Described two second optical sensors are arranged according to the length direction of first prism film, wherein second optics
Sensor and first optical sensor are arranged according to the length direction of second prism film, another second optical sensing
Device and another first optical sensor are arranged according to the length direction of second prism film.
11. a kind of terminal device characterized by comprising processor and the LCD device as described in claim 9 or 10, it is described
Processor and the LCD device are electrically connected.
12. terminal device according to claim 11, which is characterized in that if the LCD device includes multiple first optics
Sensor and/or multiple second optical sensors, then the processor is used for according to each first optical sensor or each the
Electric signal that two optical sensors respectively obtain generates corresponding fingerprint image, and to the multiple first optical sensor and/
Or multiple corresponding fingerprint images of second optical sensor are spliced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/072843 WO2020150926A1 (en) | 2019-01-23 | 2019-01-23 | Lcd in-screen fingerprint recognition module, lcd apparatus and terminal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109863508A true CN109863508A (en) | 2019-06-07 |
| CN109863508B CN109863508B (en) | 2023-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980000120.2A Active CN109863508B (en) | 2019-01-23 | 2019-01-23 | Fingerprint identification module under LCD screen, LCD device and terminal equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109863508B (en) |
| WO (1) | WO2020150926A1 (en) |
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| CN111062370A (en) * | 2019-08-16 | 2020-04-24 | 深圳阜时科技有限公司 | Optical detection device |
| CN111095274A (en) * | 2019-07-25 | 2020-05-01 | 深圳市汇顶科技股份有限公司 | Fingerprint identification module under screen, LCD optical fingerprint identification system and electronic equipment |
| CN111108509A (en) * | 2019-08-08 | 2020-05-05 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and electronic equipment |
| US10936847B1 (en) | 2019-09-20 | 2021-03-02 | Shenzhen GOODIX Technology Co., Ltd. | Under-display optical sensor with compensated light paths |
| WO2021051737A1 (en) * | 2019-09-20 | 2021-03-25 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus, backlight module, liquid crystal display screen and electronic device |
| WO2021082880A1 (en) * | 2019-10-30 | 2021-05-06 | 中兴通讯股份有限公司 | Display screen module and terminal |
| WO2021146965A1 (en) * | 2020-01-21 | 2021-07-29 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device, backlight module, display screen, and electronic device |
| US11126034B2 (en) | 2018-08-15 | 2021-09-21 | Shenzhen GOODIX Technology Co., Ltd. | Under-screen optical fingerprint recognition system, backlight module, display screen, and electronic device |
| US11144744B2 (en) | 2018-08-24 | 2021-10-12 | Shenzhen GOODIX Technology Co., Ltd. | Backlight module, under-screen fingerprint identification apparatus and electronic device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109863508B (en) | 2023-05-26 |
| WO2020150926A1 (en) | 2020-07-30 |
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