CN108446677A - A kind of fingerprint recognition module for below screen - Google Patents
A kind of fingerprint recognition module for below screen Download PDFInfo
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- CN108446677A CN108446677A CN201810425183.XA CN201810425183A CN108446677A CN 108446677 A CN108446677 A CN 108446677A CN 201810425183 A CN201810425183 A CN 201810425183A CN 108446677 A CN108446677 A CN 108446677A
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- 238000012634 optical imaging Methods 0.000 claims description 5
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- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- Image Input (AREA)
Abstract
The present invention discloses a kind of fingerprint recognition module for below screen, including screen component, the miniature backlight illuminating system being installed in below screen component and the imaging system being installed in miniature backlight illuminating system, the screen component being installed in above miniature backlight illuminating system, the screen component includes glass cover-plate, the display screen being set to below glass cover-plate, the light guide plate for illuminating liquid crystal display being set to below display screen, the light guide plate is set to above light conducting member, the miniature backlight illuminating system includes light conducting member, it is installed in the illuminated component of light conducting member side, the imaging system includes the imaging len for imaging, the imaging sensor for receiving image being installed in below imaging len.The configuration of the present invention is simple, at low cost, service life is high and good reliability, can be eliminated simultaneously due to stain caused by local luminance deficiency on display screen caused by light guide plate trepanning, can be used for common LCD touch display screens.
Description
Technical field
The present invention relates to a kind of fingerprint recognition modules, are to be related to one kind for mobile phone, tablet, notebook more specifically
Computer, electronic lock, identification instrument screen below fingerprint recognition module.
Background technology
The fingerprint recognition module for mobile phone of existing prevalence on the market, is largely capacitive fingerprint sensing device component,
It forms electric field using silicon crystal unit microarray and conductive subcutaneous electrolyte, and the height fluctuating of fingerprint can cause between the two
There is different variations in pressure difference, can realize that accurate fingerprint measures whereby.But since sensor surface is held using silicon materials
It is fragile, cause service life to reduce.And bumps between the gully and ridge for passing through fingerprint form fingerprint image,
Difficulty, finger discrimination rate are relatively low thus to be identified to dirty finger or wet finger etc..
In addition application No. is a kind of touching using miniature LED sensing technologies of the U.S. Patent Application Publication of US9570002
Display screen fingerprint identification technology is touched, as shown in figure 36, this technology is equipped with small infrared ray on miniature light-emitting diode display
Transmitter and sensor array, to replace the capacitive fingerprint sensing device component of present mainstream.The design can make touch panel
It is integrated in one with fingerprint sensor.Its advantage is：It is very beautiful and practical, is hidden in below display screen, very it is concealed not
It is easily discovered, and display screen one integrated mass, is mainly used for the Rimless screen design of next-generation smart mobile phone, " disappearance "
HOME keys and Touch ID fingerprint sensors.But the technology is only used on the display screen of OLED, main cause is：
OLED (organic light emission LED) is that full impregnated is self luminous, and display screen does not need back lighting, therefore the region of fingerprint recognition imaging
Without backlight trepanning.If using common LCD display, due to the leaded light of the backlight module of illumination display screen
Plate (some micro-structures of its bottom surface) can be in the light to the fingerprint recognition module generation of lower section, therefore light guide plate is in fingerprint recognition light
The position for learning the surface of imaging modules needs out a hole, allows the light of fingerprint lower epidermis that can pass through backlight module and leads to
The imaging len for crossing lower section carries out imaging identification.So since light guide plate position of opening cannot shine the LCD screen of surface
It is bright, an apparent stain is will appear on display screen.
Foregoing invention uses the touch display screen technology of miniature LED sensing technologies, the technical problem of the OLED screen maximum
It is the restricted lifetime of organic material.OLED material due to generating blue light is degraded faster than the material profit of other colors, blue
Light output can be fewer than the light of other colors.In addition water can be with the organic material of transient breakdown display, therefore, improved sealing
Technique is of great significance to actual production.OLED screen (such as document or net in image of the display with white background
Stand), it can very power consumption.A further disadvantage is that burn-in problem：Due to the difference that each pixel is shown on the screen, each position
Aging speed just have difference.The production difficulty of this panel is very high, and expensive.
Invention content
To overcome drawbacks described above in the prior art, the present invention provides a kind of for below mobile phone screen by taking mobile phone as an example
Fingerprint recognition module, at low cost, service life is high and good reliability, can eliminate since light guide plate trepanning causes simultaneously
Display screen on stain, can be used for common LCD touch display screens.
To achieve the above object, the present invention provides a kind of fingerprint recognition module for below screen, including screen structure
Part, the miniature backlight illuminating system being installed in below screen component and the imaging system being installed in inside miniature backlight illuminating system
System, the screen component includes glass cover-plate, the display screen being set to below glass cover-plate, the use being set to below display screen
It is provided with guide-lighting region among the light guide plate of illumination display screen, the light guide plate, the light guide plate is set on light conducting member
Side, the miniature backlight illuminating system includes the light conducting member for adjusting light and the illuminated component for generating light, institute
State light conducting member include catoptric arrangement and be set at the top of light conducting member for limiting the horn mouth of imaging system field angle,
The catoptric arrangement, which is set, to be independently placed in light conducting member bottom or is set to light conducting member bottom and is integrally formed with light conducting member,
The catoptric arrangement is inclined reflecting surface from interior top to outer lower side, and the imaging system is set to below horn mouth, described
Illuminated component is installed in the lateral surface of light conducting member, under or within, the imaging system include for imaging imaging it is saturating
Mirror, the filter plate being installed in below imaging len, the imaging sensor for receiving image being installed in below filter plate.
Preferably, the filter plate is to transmit the waveband infrared spike filters of 760nm~1040nm,
It can be the infrared filter for filtering infrared light.
Preferably, the imaging system further includes the diaphragm piece being installed in above imaging len, the diaphragm piece is set
Be equipped with first through hole, the diaphragm piece is independently disposed to above imaging len, can also be set to above imaging len and with
Imaging system is wholely set.
Preferably, the catoptric arrangement includes the band saw dentation micro-structure for light distribution, the band saw dentation
Micro-structure is preferably total-reflection type micro-structure, or total reflection micro-structure and the combination of half reflection micro-structure.
Preferably, the light conducting member includes the optically focused that the light that illuminated component is sent out is collected and is collimated
Lens, the lateral surface for being totally reflected to light.
Preferably, the light conducting member further includes being arranged in light conducting member central bottom from interior top under outer
The inclined transmission-type step surface for being transmitted to the light reflected by lateral surface on catoptric arrangement in side.
Preferably, the collector lens is installed in light conducting member outer ring bottom, the illuminated component is installed in optically focused
Below lens.
Preferably, the lateral surface is totally reflected the light after being collimated by collector lens.
Preferably, the collector lens is installed in the lower section of the lateral surface of light conducting member outer ring, the illuminated component
It is installed in the side of collector lens, the light conducting member further includes for being all-trans to the light after being collimated by collector lens
The medial surface penetrated, the lateral surface carry out secondary total reflection to the light reflected by medial surface.
Preferably, the collector lens is installed in the lower section of the medial surface of light conducting member outer ring, the outside bread
The first lateral surface for being totally reflected to the light after being collimated by collector lens is included, for being reflected by the first lateral surface
Light carry out the second lateral surface of secondary total reflection.
Preferably, the collector lens is installed in the lower section of the lateral surface of light conducting member outer ring, the light conducting member
Further include the medial surface for being totally reflected to the light after being collimated by collector lens, the lateral surface is to anti-by medial surface
The light penetrated carries out secondary total reflection, and the light conducting member further includes the light-emitting surface being installed at the top of light conducting member, the light extraction
Face be zigzag fresnel surface, the light conducting member further include be arranged light conducting member bottom from interior top to outer lower side
Incline the reflective step surface for being totally reflected to the light reflected by lateral surface on light-emitting surface chopped.
Preferably, the light conducting member bottom be installed with incline from interior top to outer lower side chop for will be by outside
The light of face reflection is transmitted to the transmission-type step surface on catoptric arrangement, is installed with below the transmission-type step surface high reflective
Component, the high reflecting assembly are independently disposed to below light conducting member, can also be integrally formed with light conducting member.
Preferably, the high reflecting assembly includes the micro-structure for mixed light, the quantity of the imaging len is one
Piece may be set to be two panels or multi-disc.
Preferably, the imaging len is optical imaging lens, the optical imaging lens are that aspherics is saturating
Mirror, diffraction optics toroidal lens or Fresnel toroidal lens.
Preferably, the illuminated component is several LED light sources, several laser light sources are may be set to be,
Several white LED light sources and the combination of IR LED infrared light sources or several white LED light sources and color LED light source combination.
Preferably, the surface of the catoptric arrangement is provided with the fluorescent powder component for excited white light, it is described to shine
Component is at least two blue light laser diodes or blue light LED light source, and screen states blue light diode or the wavelength of blue light LED light source
Between 380nm~450nm.
Preferably, including several miniature backlight illuminating systems of group and imaging system.
Preferably, the light conducting member be circle, may be ellipse, rectangular, triangle, polygon or
Irregular figure.
Preferably, the display screen is LCD liquid crystal display screen, may be OLED display screen or micro- LED array
Display screen.
Preferably, the leaded light region is the guide-lighting through-hole being opened on light guide plate, may be that setting is being led
Transparent flat on tabula rasa or curved surface.
Preferably, light conducting member further includes the light approaching face for being installed in its outer ring, the illuminated component is installed in
On the outside of light conducting member.
Compared with prior art, the beneficial effects of the present invention are：
The present invention includes miniature backlight illuminating system and the imaging system that is installed in miniature backlight illuminating system, installing
Screen component above miniature backlight illuminating system, the screen component includes glass cover-plate, is set to below glass cover-plate
Display screen, be set to below display screen for illuminating the light guide plate of liquid crystal display, offer and lead among the light guide plate
Light region, the light guide plate are set to above light conducting member, and the miniature backlight illuminating system includes light conducting member and for sending out
The illuminated component of illuminating ray is penetrated, the imaging system includes the imaging len for imaging, is installed in below imaging len
Imaging sensor for receiving image.The configuration of the present invention is simple, at low cost, service life is high and good reliability, simultaneously can
To eliminate due to the stain caused by light guide plate trepanning on display screen, it can be used for common LCD touch display screens.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention one provides is matched with screen component
The structural schematic diagram of conjunction；
Fig. 2 is the enlarged drawing in the portions A in Fig. 1；
Fig. 3 is a kind of isometric view for the fingerprint recognition module below screen that the embodiment of the present invention one provides
Exploded view；
Fig. 4 is a kind of light conducting member for the fingerprint recognition module below screen that the embodiment of the present invention one provides
Isometric view；
Fig. 5 is the upward view of Fig. 4；
Fig. 6 be a kind of catoptric arrangement for the fingerprint recognition module below screen that inventive embodiments one provide etc.
Axis surveys view；
Fig. 7 is the upward view of Fig. 6；
Fig. 8 is a kind of catoptric arrangement for the fingerprint recognition module below screen that the embodiment of the present invention one provides
Light distributing method schematic diagram；
Fig. 9 is a kind of catoptric arrangement for the fingerprint recognition module below screen that the embodiment of the present invention one provides
The miniature light distribution schematic diagram for chopping reflecting surface to single ray that inclines of the n-th of reflecting surface；
Figure 10 be a kind of catoptric arrangement for the fingerprint recognition module below screen that provides of the embodiment of the present invention one with
Optical axis included angle schematic diagram；
A kind of miniature back lighting for the fingerprint recognition module below screen that Figure 11 embodiment of the present invention one provides
The Computer analogue diaram of system；
Figure 12 is that a kind of miniature backlight for the fingerprint recognition module below screen that the embodiment of the present invention one provides is shone
Additional illumination result figure of the bright system to top LCD display；
Figure 13 is a kind of imaging len for the fingerprint recognition module below screen that the embodiment of the present invention one provides
Isometric view；
Figure 14 is the upward view of Figure 10；
Figure 15 is a kind of imaging system for the fingerprint recognition module below screen that the embodiment of the present invention one provides
Index path；
Figure 16 is that a kind of fingerprint recognition module for below screen provided by Embodiment 2 of the present invention is matched with screen component
The structural schematic diagram of conjunction；
Figure 17 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention three provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 18 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention four provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 19 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention five provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 20 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention six provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 21 is a kind of isometric view for the fingerprint recognition module below screen that the embodiment of the present invention six provides
Exploded view；
Figure 22 is a kind of light conducting member for the fingerprint recognition module below screen that the embodiment of the present invention six provides
Isometric view；
Figure 23 is the upward view of Figure 18；
Figure 24 is that a kind of miniature backlight for the fingerprint recognition module below screen that the embodiment of the present invention six provides is shone
The light distributing method schematic diagram of bright system；
Figure 25 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention seven provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 26 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention eight provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 27 is the enlarged drawing in the portions B in Figure 26；
Figure 28 is a kind of high reflecting assembly for the fingerprint recognition module below screen that the embodiment of the present invention eight provides
Isometric view；
Figure 29 be a kind of light conducting member for the fingerprint recognition module below screen that provides of the embodiment of the present invention nine with
The structural schematic diagram of illuminated component cooperation；
Figure 30 is that a kind of fingerprint recognition module for below screen that the embodiment of the present invention ten provides is matched with screen component
The structural schematic diagram of conjunction；
Figure 31 is a kind of various light sources for the fingerprint recognition module below screen that the embodiment of the present invention 11 provides
With the schematic diagram of light conducting member cooperation；
Figure 32 is seven sides that a kind of fingerprint recognition module for below screen that the embodiment of the present invention 12 provides uses
The schematic diagram of shape light conducting member and light source cooperation；
Figure 33 is a kind of fingerprint recognition module for below screen and screen component that the embodiment of the present invention 13 provides
The structural schematic diagram of cooperation；
Figure 34 is a kind of fingerprint recognition module for below screen that the embodiment of the present invention 14 provides, multiple small
The structural schematic diagram coordinated with screen component after the splicing of type fingerprint recognition module；
Figure 35 is a kind of fingerprint recognition module for below screen that the embodiment of the present invention 14 provides, multiple small
The spliced areas imaging schematic diagram of type fingerprint recognition module.
Figure 36 is a kind of using miniature LED sensing technologies of the U.S. Patent Application Publication application No. is US9570002
The structural schematic diagram of touch display screen fingerprint identification technology.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without creative efforts, subordinate is in the scope of protection of the invention.
The embodiment of the present invention provides a kind of fingerprint recognition module for below screen.
Embodiment one
~Fig. 7, Figure 11~Figure 15 are please referred to Fig.1, the present invention provides a kind of fingerprint recognition module for below screen,
Including screen component, it is installed in miniature backlight illuminating system below screen component and is installed in miniature backlight illuminating system
The imaging system in portion, the screen component includes glass cover-plate 110, is set to the display screen 120 of 110 lower section of glass cover-plate, if
It is placed in the light guide plate 130 for illuminating display screen 120 of 120 lower section of display screen, leaded light is provided among the light guide plate 130
Region 131, the miniature backlight illuminating system include the light conducting member 140 for adjusting light and the hair for generating light
Light component 190, the light conducting member 140 include catoptric arrangement 150, and the light for being sent out to illuminated component 140 is collected
And the collector lens 141 collimated, the lateral surface 142 for being totally reflected to light are arranged at 140 intermediate bottom of light conducting member
Portion from interior top to the inclined transmission-type platform for being transmitted to the light reflected by lateral surface on catoptric arrangement in outer lower side
Terrace 143 and the horn mouth 144 for limiting imaging system field angle for being set to 140 top of light conducting member, the reflection
Structure 150 sets the bottom for being independently placed in transmission-type step surface 143, and the catoptric arrangement 150 is to be tilted from interior top to outer lower side
Reflecting surface, the catoptric arrangement 150 includes the reflecting surface 151 for being set to the lower section of transmission-type step surface 143, and the imaging is
System is set to 144 lower section of horn mouth, and the imaging system includes the imaging len 160 for imaging, is installed in imaging len
The filter plate 170 of 160 lower sections is installed in the imaging sensor 180 for receiving image of 170 lower section of filter plate.
The collector lens 141 is installed in 140 outer ring bottom of light conducting member, and it is saturating that the illuminated component 190 is installed in optically focused
141 lower section of mirror, the lateral surface 142 are totally reflected the light after being collimated by collector lens 141, the light after being totally reflected
Line is incident on across transmission-type step surface 143 reflected on catoptric arrangement 150 after, uniform light illuminate LCD display 120
The range of diameter 5mm and fingerprint lower epidermis position positioned at 110 upper surface 111 of glass cover-plate.
The transmission-type step surface includes band saw dentation micro-structure, per a bit of micro-structure by it is a bit of perpendicular to
The vertical transmission plane in incident ray direction and a bit of horizontal plane composition for being parallel to incident ray, allow incident ray to penetrate,
And it is incident on the reflecting surface 151 for being disposed below 150 outside of catoptric arrangement and carries out reflection and light distribution.
Please refer to Fig. 8~Figure 10, be incident on every light of the reflecting surface of catoptric arrangement, after reflection with optical axis Z1Z2's
Angle thetaN, size gradual change, i.e., often inclining for a bit of micro-structure chops reflecting surface to the described reflecting surface, inclines and chops angle gradual change.
Referring to FIG. 8, the backlight illuminating system of the left and right sides is symmetrical structure, from 0 point of the position of illuminated component 190 hair
The light gone out, after the arc collector lens 141 below light guide member outer ring collimates, by reflecting surface on the outside of light guide member 142
Reflection, reflection light, which is transferred 90 °, to be transmitted along horizontal direction toward intermediate direction, using the annular transmission-type step of transmission-type
It is incident on after transmiting on the reflecting surface 151 in the outside of lower section catoptric arrangement 150 in face 143.The reflecting surface 151, is divided into L
The zigzag of a annular is miniature to incline and chops reflecting surface, the miniature sloping reflector by it is a bit of incline chop reflecting surface and a bit of flat
Row is formed in the horizontal plane of incident ray, from the incident light of light conducting member 140 will reflect simultaneously light distribution.
Its light distribution is characterized as：Assuming that there is any one light ABNIt is incident on the miniature sloping reflector of 151 n-th of reflecting surface
On, reflection light BNCN, then its reflection light and optical axis Z1Z2Angle thetaNFor the relationship of gradual change.Most from reflecting surface 151
Lower section is a bit of, arrives one section of the top, and the light distribution angle is from minimum light distribution angle θminIt is gradient to maximum light distribution angle θmax.The present embodiment
It is preferred that between the variation of the light distribution angle is 0 °~35 °, that is, it is incident on 151 bottom of reflecting surface, one miniature sloping reflector B1
The light of point, reflection light B1C1, reflection light B1C1Light distribution angle it is minimum, with optical axis Z1Z2Angle be
θmin, the present embodiment preferably angle is θminIt is 0 °.It is incident on a bit of sloping reflector BL points in 151 the top of reflecting surface
Light, reflection light BLCL, the reflection light BLCL, with optical axis Z1Z2Angle it is maximum, light distribution angle is
θmax, this specific embodiment preferably maximum light distribution angle θmaxIt is 35 °.
Light distribution angle θNFrom minimum light distribution angle θminIt is gradient to maximum light distribution angle θmax, the specific angular range of light distribution is not
It limits, can be adjusted according to the hot spot uniformity of 111 position of actual glass cover board upper surface, for example light distribution angle θNIt can
To increase the range being adjusted between -15 °~60 °, or diminution is adjusted to 5 °~30 ° of range.
Referring to FIG. 9, assuming there be any one light ABNIt is incident on the miniature sloping reflector of 151 n-th of reflecting surface,
Its reflection light is BNCN, BNQ is the tangent line of miniature sloping reflector, BNN is the normal of the miniature sloping reflector, BNH is water
Horizontal line, BNZ is vertical line.Assuming that its reflection light BNCNWith vertical line BNZ (is parallel to optical axis Z1Z2) it is angle thetaN, this is micro-
Type sloping reflector and horizontal line BNThe inclination angle of H is τ, incident ray ABNWith normal BNThe angle (incidence angle) of N is δ, then
Reflection light BNCNWith normal BNAngle (angle of reflection) between N is also δ.So according to the geometrical relationship in figure, have below
Relational expression：
First formula：
Second formula：
Third formula：δ+δ+γ+τ=π
According to above-mentioned first formula~third formula can obtain n-th it is miniature incline chop reflecting surface and horizontal line BNH's inclines
Chop angle：
4th formula：
From 151 bottom one of reflecting surface it is miniature incline chop reflecting surface, arrive a miniature sloping reflector of the top, the light distribution
Angle is from minimum light distribution angle θminIt is gradient to maximum light distribution angle θmax.This specific embodiment is preferably the relationship of linear change, false
If reflecting surface 151 be divided into total it is N number of it is miniature incline chop reflecting surface, then n-th it is miniature incline chop reflecting surface, light distribution angle is：
5th formula：
In conjunction with the 4th formula, obtain the miniature sloping reflector of 151 n-th of the reflecting surface incline chop angle (with horizontal line it
Between angle) be：
6th formula：
The a bit of minimum of preferred 151 lowermost positions of the zigzag micro-structure conical reflecting surface is matched in the present embodiment
Angular θminIt is 0 °, a bit of maximum light distribution angle θ of uppermost positionmaxIt is 35 °.And preferably by the reflecting surface 151
Be divided into total M=24 it is miniature incline chop reflecting surface, then according to the 6th formula, as N=0, the reflecting surface 151 is bottom
One miniature incline chop reflecting surface incline that chop angle be τ=45 °；As N=24, the reflecting surface 151 topmost one it is miniature incline chop
Inclining for reflecting surface chops angle for τ=27.5 °.The reflecting surface 151, inclining for miniature sloping reflector from the bottom up chop angle τ slowly
Become smaller, the gradual change between 10 °~75 °.
It is described it is miniature incline chop the angle of reflecting surface and be set as gradual change from small to large and be ranked sequentially, in other embodiments,
Part is may be set to be to be staggered.
Referring to FIG. 10, the miniature backlight illuminating system, inclining accompanying by the reflecting surface 151 chops basal plane 151b
Angle by top first in the inner part it is miniature incline chop the crown of reflecting surface and the last one miniature sloping reflector of outer side-lower
2 points of crown between connect generate, with optical axis Z1Z2Angle be Ψ, this angle is to incline to chopping angle, and inclining chops angle and be
15 °~80 ° degree between, this specific embodiment preferably this incline chop angle be 70.36 °.
The annular light conducting member 140 of the total reflection prism structure, among the reflection of its lateral surface 142 and directive
The light in direction is horizontal direction, vertical direction or the light for having certain angle with horizontal direction, or have one
The light of diverging or the convergence of a narrow angle.
Described in the present embodiment it is multiple it is miniature incline chop reflecting surface between by incline chop straight line connection, water can also be passed through
Flat line or curve connection.
The oblique base 151b of the attachment of reflecting surface 151 described in the present embodiment is set as inclining the plane chopped, can also set
It is set to cambered curved surface.
The horn mouth 144 is the aperture diaphragm of imaging len 160, and aperture diaphragm allows the imaging of fingerprint lower epidermis
Line is imaged onto across imaging len 160 in imaging sensor 180 below, and is blocked the light except field angle and entered
In imaging len 160.
For the filter plate 170 to filter out infrared light, such as the heat radiation of finger, it is 380nm only to allow wavelength
Light between~760nm by filter plate 170 and can be imaged onto in imaging sensor 180.
The illuminated component 190 is plurality of LEDs light source, the LCD display being used for above Uniform Illumination and finger following table
Skin, preferably three white light surface-mounted LED light sources, four white lights paster LED light source are equidistantly placed in poly- in the present embodiment
141 lower section of optical lens.Certainly, quantity can also be set as two, three, four or any amount according to actual needs.
In the present embodiment, the light conducting member 140 is preferably circular.
With reference to figure 12, the uniform of the hot spot on computer simulation LCD display within the scope of a diameter of 5mm is shown
Degree and Illumination Distribution are as a result, analog result shows the uniformity of illuminance of the LCD display within the scope of diameter 5mm 80% or so.
It can meet the stain on the LCD display that additional illumination is generated due to 130 trepanning of light guide plate, with other positions of LCD display
The backlighting effect fusion set is abundant.
0 and Figure 11 are please referred to Fig.1, the imaging len 160 includes upper and lower two aspherical, will be on glass cover-plate 110
The range of the about 5mm on surface 111 is imaged onto on the imaging sensor 180 of lower section.
Imaging sensor 180 in the present embodiment is preferably cmos sensor.
The display screen 120 is LCD liquid crystal display screen, it may be OLED display screen or micro- in other embodiments
LED array display screen.
The guide-lighting region 131 in the present embodiment is the guide-lighting through-hole being opened on light guide plate, in other embodiments
It may be the transparent flat or curved surface being arranged on light guide plate.
The illuminated component 190 in the present embodiment, be it is horizontally disposed, in other embodiments, can also be vertical
Or it is obliquely installed at an angle.
The catoptric arrangement 250 in the present embodiment is that total reflection structure may be in other embodiments office
Portion is totally reflected structure and local semi-reflective structure combination.
Embodiment two
6 are please referred to Fig.1, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 210 to state screen component, and glass cover-plate 210 includes the upper surface 211 for being positioned over finger, is set to glass
The display screen 220 of 210 lower section of cover board, is set to the light guide plate 230 for illuminating display screen 220 of 220 lower section of display screen, institute
It states and is provided with guide-lighting region 231 among light guide plate 230, the miniature backlight illuminating system includes for adjusting leading for light
Light component 240 and illuminated component 290 for generating light, the light conducting member 240 includes catoptric arrangement 250, for hair
The collector lens 241 that the light that light component 290 is sent out is collected and collimates, the medial surface for being totally reflected to light,
Lateral surface 242 for carrying out secondary reflection to the light reflected by medial surface, is arranged in 240 central bottom of light conducting member
From interior top to the inclined transmission-type platform for being transmitted to the light reflected by lateral surface 242 on catoptric arrangement in outer lower side
Terrace 243 and the horn mouth 244 for limiting imaging system field angle for being set to 240 top of light conducting member, the reflection knot
Structure 250 sets the bottom for being independently placed in transmission-type step surface 2413, and the catoptric arrangement 250 is to incline to chopping to outer lower side from interior top
Reflecting surface, the catoptric arrangement 250 includes the reflecting surface 251 for being set to the lower section of transmission-type step surface 243, and the imaging is
System is set to 244 lower section of horn mouth, and the imaging system includes the imaging len 260 for imaging, is installed in imaging len
The filter plate 270 of 260 lower sections is installed in the imaging sensor 280 for receiving image of 270 lower section of filter plate.
Embodiment two is distinguished as with embodiment one：The collector lens 241 is installed in the outer of 240 outer ring of light conducting member
242 lower section of side, the illuminated component 290 are installed in the side of collector lens 241, and the light conducting member 240 further includes to light
The medial surface that line is totally reflected is totally reflected the light after being collimated by collector lens 241, and lateral surface 242 is to by inside
Light after the total reflection of face carries out secondary reflection, the light after secondary reflection with it is the same in embodiment one, across transmission-type step
Face 243, which is incident on catoptric arrangement 250, to be reflected, the path, imaging process and other settings after light and embodiment
Identical in one, details are not described herein again.
Embodiment three
7 are please referred to Fig.1, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 310 to state screen component, and glass cover-plate 310 includes the upper surface 11 for placing finger, is set to glass cover
The display screen 320 of 310 lower section of plate is set to the light guide plate 330 for illuminating display screen 320 of 320 lower section of display screen, described
Guide-lighting region 331 is provided among light guide plate 330, the miniature backlight illuminating system includes the guide-lighting structure for adjusting light
Part 340 and illuminated component 390 for generating light, the light conducting member 340 includes catoptric arrangement 350, for the structure that shines
The collector lens 341 that the light that part 390 is sent out is collected and collimates, the lateral surface for being totally reflected to light, setting
It is inclined for transmiting the light reflected by lateral surface 342 from interior top to outer lower side in 340 central bottom of light conducting member
Transmission-type step surface 343 on to catoptric arrangement and be set to 340 top of light conducting member for limiting imaging system field angle
Horn mouth 344, the lateral surface include for by collector lens 341 collimate after light be totally reflected first outside
Side and the second lateral surface 342 for carrying out secondary reflection to the light that is reflected by first lateral surface, the reflection are tied
Structure 350 sets the bottom for being independently placed in transmission-type step surface 343, and the catoptric arrangement 350 is inclined from interior top to outer lower side
Reflecting surface, the catoptric arrangement 350 include the reflecting surface 351 for being set to 343 lower section of transmission-type step surface, the imaging system
It is set to 344 lower section of horn mouth, the imaging system includes the imaging len 360 for imaging, is installed in imaging len 360
The filter plate 370 of lower section is installed in the imaging sensor 380 for receiving image of 370 lower section of filter plate.
Embodiment three is distinguished as with embodiment one：The collector lens 341 is installed in the interior of 340 outer ring of light conducting member
The lower section of side 342, the illuminated component 390 are installed in the side of collector lens 341, and the lateral surface includes for quilt
Collector lens 341 collimate after light the first lateral surface for being totally reflected and for being reflected by first lateral surface
Light carries out the second lateral surface 342 of secondary reflection, the light after secondary reflection with it is the same in embodiment one, across transmission-type
Step surface 343, which is incident on catoptric arrangement 350, to be reflected, the path, imaging process and other settings after light and reality
Apply identical in example one, details are not described herein again.
Example IV
8 are please referred to Fig.1, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 410 to state screen component, and glass cover-plate 410 includes the upper surface 411 for placing finger, is set to glass
The display screen 420 of 410 lower section of cover board, is set to the light guide plate 430 for illuminating display screen 420 of 420 lower section of display screen, institute
It states and is provided with guide-lighting region 431 among light guide plate 430, the miniature backlight illuminating system includes the leaded light for adjusting light
Component 440 and illuminated component 490 for generating light, the light conducting member 440 includes for being sent out to illuminated component 490
The light collector lens 441 that is collected and collimates, for being totally reflected to the light after being collimated by collector lens 441
Medial surface 445, the lateral surface 442 for carrying out secondary total reflection to the light reflected by medial surface 445, be arranged in leaded light
440 inside bottom of component is used to be carried out instead by the light of 442 secondary reflection of lateral surface from interior top to outer lower side is inclined
The catoptric arrangement 443 penetrated is installed in the secondary for carrying out the light reflected by catoptric arrangement 443 of 440 top of light conducting member
The light-emitting surface 444 of light distribution and the horn mouth for limiting imaging system field angle for being set to 440 top center of light conducting member,
The imaging system is set to below horn mouth, and the imaging system includes the imaging len 460 for imaging, is installed in into
Diaphragm piece above lens is installed in the filter plate 470 of 460 lower section of imaging len, is installed in the use of 470 lower section of filter plate
In the imaging sensor 480 for receiving image, the diaphragm piece is provided with first through hole, the horn mouth and the first of diaphragm piece
Through-hole is connected to, and becomes the aperture diaphragm of imaging len 460.
Example IV is distinguished as with embodiment two：The collector lens 441 is installed in the outer of 440 outer ring of light conducting member
442 lower section of side, the illuminated component 490 are installed in the side of collector lens 441, and 440 top of the light conducting member is installed with
For the light-emitting surface 444 of secondary light-distribution, the light-emitting surface 444 is zigzag fresnel surface, and the light-emitting surface 444 is to be all-trans
The structure that declines is penetrated, each of which sawtooth chops face with different inclination angle, incident ray is carried out uniform light distribution, is equably divided
On cloth to the upper surface 411 of the glass cover-plate positioned at touch screen.The light conducting member 440 further includes for by collector lens
The medial surface 445 that light after 441 collimations is totally reflected, lateral surface 442 carry out two to the light reflected by medial surface 445
Secondary reflection, the light after secondary reflection, which is incident on catoptric arrangement 443, is reflected, later, the light after reflection and embodiment
It is the same in two, in addition to light is by other paths of light-emitting surface 444, imaging process and other settings and phase in embodiment one
Together, details are not described herein again.
Embodiment five
9 are please referred to Fig.1, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 1010 to state screen component, and glass cover-plate 1010 includes the upper surface 1011 for placing finger, is set to glass
The display screen 1020 of 1010 lower section of glass cover board, is set to the light guide plate for illuminating display screen 1020 of 1020 lower section of display screen
1030, guide-lighting region 1031 is provided among the light guide plate 1030, and the miniature backlight illuminating system includes for adjusting light
The light conducting member 1040 of line and illuminated component 1060 for generating light, the light conducting member 1040 include for shining
The collector lens 1044 that the light that component 1060 is sent out is collected and collimates, after to being collimated by collector lens 1044
The medial surface 1043 that light is totally reflected, the outside for carrying out secondary total reflection to the light reflected by medial surface 1043
Face 1045 is arranged inclined for will be by outside from interior top to outer lower side by bottom position in the inside of light conducting member 1040
The catoptric arrangement 1042 that the light of 1045 secondary reflection of face is reflected, be installed in the top of light conducting member 1040 for will be by
The light that catoptric arrangement 1042 reflects carries out the light-emitting surface 1041 of secondary light-distribution and is set to 1040 top center of light conducting member
For limiting the horn mouth 1050 of imaging system field angle, the imaging system is set to 1050 lower section of horn mouth, it is described at
As system includes the imaging len 1070 for imaging, it is installed in the diaphragm piece of 1070 top of imaging len, it is saturating to be installed in imaging
The filter plate 1080 of 1070 lower section of mirror, is installed in the imaging sensor 1090 for receiving image of 1080 lower section of filter plate, institute
It states diaphragm piece and is provided with first through hole, the horn mouth 1050 is connected to the first through hole of diaphragm piece, becomes imaging len 1070
Aperture diaphragm.
Embodiment five is distinguished as with example IV：The catoptric arrangement 1042 is that total reflection and local reflex are combined,
For from the inside front ring-shaped reflecting curved surface that lower section extends outward, the cross section profile of the ring-shaped reflecting curved surface is by multistage
The straight line or curve of different angle form, and the light after being totally reflected by lateral surface 1045 is reflected by the catoptric arrangement 1042
On light-emitting surface 1041, the filter plate 1080 is the spike filter waveband infrared for transmiting 760nm~1040nm, institute
Stating spike filter can prevent the optical signal of its all band from entering in imaging sensor 1090, avoid interfering, the present embodiment
In, other than the setting of catoptric arrangement and filter plate and example IV difference, other light reflections and light distribution were imaged
Journey and other settings are identical with example IV, and details are not described herein again.
Embodiment six
0~Figure 24 is please referred to Fig.2, the present invention provides a kind of fingerprint recognition module for below screen, including screen structure
Part, the miniature backlight illuminating system being installed in below screen component and the imaging system being installed in inside miniature backlight illuminating system
System, the screen component includes glass cover-plate 510, is set to the display screen 520 of 510 lower section of glass cover-plate, is set to display screen
520 lower sections for illuminating the light guide plate 530 of display screen 520, be provided with guide-lighting region 531, institute among the light guide plate 530
It includes the light conducting member 540 for adjusting light and the illuminated component 590 for generating light to state miniature backlight illuminating system,
The illuminated component 590 is installed in outer 540 sides of light conducting member, and the light conducting member 540 is led including being installed in the light of its outer ring
Enter face 541, for the catoptric arrangement 542 reflected from the incident light of light approaching face 541 and being set to light conducting member
The horn mouth 543 for limiting imaging system field angle at 540 tops, the catoptric arrangement 542 are from interior top to outer lower side
Incline the reflecting surface chopped, and the reflecting surface is installed in the bottom of light conducting member 540, and the imaging system is set under horn mouth 544
Side, the imaging system includes the imaging len 560 for imaging, is installed in the diaphragm piece 550 of 560 top of imaging len,
The filter plate 570 of 560 lower section of be installed in imaging len, the image for receiving image for being installed in 570 lower section of filter plate pass
Sensor 580, the diaphragm piece 550 are provided with first through hole, and the horn mouth is connected to the first through hole of diaphragm piece 550, becomes
The aperture diaphragm of imaging len 560, the diaphragm piece 550 are separately set in 560 top of imaging len, in other embodiments,
It can also be set to the top of imaging len 560 and with the lens barrel one for protecting imaging system outside imaging system at
Type.
Embodiment six is distinguished as with embodiment one：The light conducting member 540 includes being located at 540 outer ring of light conducting member
Light approaching face 541, the light that illuminated component 590 is sent out are incident on catoptric arrangement 542 from light approaching face 541, after light
Path, imaging process and other settings are identical with embodiment one, and details are not described herein again.
Embodiment seven
5 are please referred to Fig.2, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 610 to state screen component, and glass cover-plate 610 includes the upper surface 611 for placing finger, is set to glass
The display screen 620 of 610 lower section of cover board, is set to the light guide plate 630 for illuminating display screen 620 of 620 lower section of display screen, institute
It states and is provided with guide-lighting region 631 among light guide plate 630, the miniature backlight illuminating system includes the leaded light for adjusting light
Component 640 and illuminated component 690 for generating light, the light conducting member 640 include light approaching face 641, for from
Catoptric arrangement 642 that the incident light of light approaching face 641 is reflected and be set to 640 top of light conducting member for limiting
It is formed as the horn mouth of system field angle, the catoptric arrangement 642 is the reflecting surface chopped that inclines from interior top to outer lower side, described
Reflecting surface is installed in the bottom of light conducting member 640, and the imaging system is set to below horn mouth, and the imaging system includes
For the imaging len 660 of imaging, it is installed in the diaphragm piece 650 of 660 top of imaging len, under be installed in imaging len 660
The filter plate 670 of side is installed in the imaging sensor 680 for receiving image of 670 lower section of filter plate, the diaphragm piece
650 are provided with first through hole, and the horn mouth is connected to the first through hole of diaphragm piece 650, becomes the aperture of imaging len 660
Diaphragm.
Embodiment seven is distinguished as with embodiment six：642 lower section of the catoptric arrangement is provided with high reflecting assembly 6100,
The taper at itself and the 640 intermediate position of light guide member of top is inclined chop reflecting surface 642 between stay air gap there are one very little.
The high reflecting assembly 6100 is reflexed to the LCD display of top for recycling the light leaked out from reflecting surface 642,
Remaining opticpath, imaging process and other settings are identical with embodiment six, and details are not described herein again.
The height reflective group 6100 can be separation component, or using double-material injection-molding (double-shot moulding) at
High reflecting assembly 6100 and the light guide member 640 of top are molded by the method for type together.
Embodiment eight
6~Figure 28 is please referred to Fig.2, the present invention provides a kind of fingerprint recognition module for below screen, including screen structure
Part, the miniature backlight illuminating system being installed in below screen component and the imaging system being installed in inside miniature backlight illuminating system
System, the screen component includes glass cover-plate 710, and glass cover-plate 710 includes the upper surface 711 for placing finger, is set to
The display screen 720 of 710 lower section of glass cover-plate, is set to the light guide plate for illuminating display screen 720 of 720 lower section of display screen
730, guide-lighting region 731 is provided among the light guide plate 730, and the miniature backlight illuminating system includes for adjusting light
Light conducting member 740 and illuminated component 790 for generating light, the light conducting member 740 include light approaching face 741, use
In to the catoptric arrangement 742 reflected from the incident light of light approaching face 741 and being set to 740 top of light conducting member
Horn mouth for limiting imaging system field angle, the catoptric arrangement 742 are the inclined reflection from interior top to outer lower side
Face, the reflecting surface are installed in the bottom of light conducting member 740, and the imaging system is set to below horn mouth, the imaging system
System includes the imaging len 760 for imaging, is installed in the diaphragm piece 750 of 6860 top of imaging len, is installed in imaging
The filter plate 770 of 760 lower section of lens is installed in the imaging sensor 780 for receiving image of 770 lower section of filter plate, described
Diaphragm piece 750 is provided with first through hole, and the horn mouth is connected to the first through hole of diaphragm piece 750, becomes imaging len 760
Aperture diaphragm.
Embodiment eight is distinguished as with embodiment seven：The step surface 742 of transmission-type is provided on the catoptric arrangement 742,
The high reflection component 7100 being arranged below step surface is the various micro-structures with light mixing function.The platform of the light conducting member 740
Each section of step of terrace 742 by with incident ray direction almost vertical vertical plane, and almost put down with incident ray direction
Capable horizontal plane is constituted.The light that illuminated component 790 is sent out passes through the vertical plane of step surface 742, and the height being incident below is anti-
It penetrates on component 7100, remaining opticpath, imaging process and other settings are identical with embodiment seven, no longer superfluous herein
It states.
The high reflection component 7100 is provided with micro reflector array, institute with light conducting member 740 on close inclined-plane
The micro reflector array stated, the concave or convex shape reflecting surface for the magnitude that size is tens microns, main function is will be anti-
The diffusion that light carries out certain angle range is penetrated, the homogeneous light distribution of fingerprint lower epidermis is formed.
Embodiment nine
9 are please referred to Fig.2, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 810 to state screen component, and glass cover-plate 810 includes the upper surface 811 for placing finger, is set to glass
The display screen 820 of 810 lower section of cover board, is set to the light guide plate 830 for illuminating display screen 820 of 820 lower section of display screen, institute
It states and is provided with guide-lighting region 831 among light guide plate 830, the miniature backlight illuminating system includes the leaded light for adjusting light
Component 840 and illuminated component 890 for generating light, the light conducting member 840 include light approaching face 841, for from
Catoptric arrangement 842 that the incident light of light approaching face 841 is reflected and be set to 840 top of light conducting member for limiting
It is formed as the horn mouth 843 of system field angle, the catoptric arrangement 842 is inclined reflecting surface, institute from interior top to outer lower side
The bottom that reflecting surface is installed in light conducting member 840 is stated, the imaging system is set to below horn mouth, the imaging system packet
The imaging len 860 for imaging is included, the diaphragm piece 850 of 860 top of imaging len, be installed in imaging len 860 are installed in
The filter plate 870 of lower section is installed in the imaging sensor 880 for receiving image of 870 lower section of filter plate, the diaphragm piece
850 are provided with first through hole, and the horn mouth 843 is connected to the first through hole of diaphragm piece 850, becomes the hole of imaging len 860
Diameter diaphragm.
Embodiment nine is distinguished as with embodiment seven：The imaging len 860 be optical imaging lens, the optics at
May be aspherics lens, diffraction optics toroidal lens, this implementation as lens are preferably Fresnel toroidal lens
Preferred a piece of Fresnel toroidal lens in example.Remaining opticpath, imaging process and other settings and phase in embodiment six
Together, details are not described herein again.
Embodiment ten
0 is please referred to Fig.3, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 910 to state screen component, and glass cover-plate 910 includes the upper surface 911 for placing finger, is set to glass
The display screen 920 of 910 lower section of cover board, is set to the light guide plate 930 for illuminating display screen 920 of 920 lower section of display screen, institute
It states and is provided with guide-lighting region 931 among light guide plate 930, the miniature backlight illuminating system includes the leaded light for adjusting light
Component 940 and illuminated component 990 for generating light, the light conducting member 940 include light approaching face 941, for from
Catoptric arrangement 942 that the incident light of light approaching face 941 is reflected and be set to 940 top of light conducting member for limiting
It is formed as the horn mouth of system field angle, the catoptric arrangement 942 is inclined reflecting surface from interior top to outer lower side, described
Reflecting surface is installed in the bottom of light conducting member 940, and the imaging system is set to 943 lower section of horn mouth, the imaging system packet
The imaging len for imaging is included, is installed in the diaphragm piece 950 of the top of imaging len 960, below be installed in imaging len
Filter plate 970, is installed in the imaging sensor 980 for receiving image of 970 lower section of filter plate, and the imaging len includes
First imaging len 961 and the second imaging len 962 for being installed in 961 lower section of the first imaging len, the diaphragm piece 950 are set
It is equipped with first through hole, the horn mouth 943 is connected to the first through hole of diaphragm piece 950, becomes the aperture light of imaging len 960
Door screen.
Embodiment ten is distinguished as with embodiment nine：The imaging len according to visual field size and the length of conjugate distance,
It could be provided as two panels, in the present embodiment, the imaging len includes the first imaging len 961 and to be installed in the first imaging saturating
Second imaging len 962 of the lower section of mirror 961, the degree of freedom with more two faces are used for aberration correction, possess it is wider at
As range, preferable imaging resolution, also two panels or more can be set as according to actual conditions.Remaining opticpath was imaged
Journey and other settings are identical with embodiment eight, and details are not described herein again.
Embodiment 11
1 is please referred to Fig.3, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, real
Apply being distinguished as example 11 and embodiment six：The illuminated component is by three white light surface-mounted LED light sources 1191 and three IR LED
Light source 1192 is constituted, and is set interval and is placed equidistant in 1140 side of light conducting member, when browsing contents of mobile phone screen, white light patch
LED light source 1191 lights, and IR LED light sources 1192 extinguish；When reading fingerprint feature information, IR LED light sources 1192 light, in vain
Light surface-mounted LED light source 1191 extinguishes so that imaging sensor can read the infrared signature information of fingerprint, to improve fingerprint
The resolution ratio of feature.Remaining opticpath, imaging process and other settings are identical with embodiment eight, no longer superfluous herein
It states.
Certainly, the illuminated component can also be several white light LEDs light other than it can be independent white LED light source
Source and the combination of IR LED light sources, several white LED light sources and color LED light source combination or several laser light sources.
Embodiment 12
2 are please referred to Fig.3, embodiment 12 is distinguished as with above-described embodiment six：The shape of the light conducting member 1240 is
Heptagon, the equidistant side for being installed in light conducting member 1240 of four white LED light sources that composition illuminated component 1290 is, with
Form uniform light.Remaining opticpath, imaging process and other settings are identical with embodiment six, herein no longer
It repeats.
Certainly, the light conducting member 1240 can also be set as three deformations on demand, quadrangle, pentagon, hexagon or
Other polygons.
Embodiment 13
3 are please referred to Fig.3, the present invention provides a kind of fingerprint recognition module for below screen, including screen component, dress
Miniature backlight illuminating system below screen component and the imaging system being installed in inside miniature backlight illuminating system, institute
It includes glass cover-plate 1310 to state screen component, and glass cover-plate 1310 includes the upper surface 1311 for placing finger, is set to glass
The display screen 1320 of 1310 lower section of glass cover board, is set to the light guide plate for illuminating display screen 1320 of 1320 lower section of display screen
1330, guide-lighting region 1331 is provided among the light guide plate 1330, and the miniature backlight illuminating system includes for adjusting light
The light conducting member 1340 of line and illuminated component 1390 for generating light, the light conducting member 1340 include light approaching face
1341, for the catoptric arrangement 1342 reflected from the incident light of light approaching face 1341 and being set to light conducting member
The horn mouth for limiting imaging system field angle at 1340 tops, the catoptric arrangement 1342 are from interior top to outer lower side
Inclined reflecting surface, the reflecting surface are installed in the bottom of light conducting member 1340, and the imaging system is set to horn mouth 1343
Lower section, the imaging system include the imaging len for imaging, are installed in the diaphragm piece 1350 of 1360 top of imaging len,
The filter plate 1370 of 1360 lower section of be installed in imaging len, is installed in the figure for receiving image of 1370 lower section of filter plate
As sensor 1380, the diaphragm piece 1350 is provided with first through hole, and the horn mouth 1343 leads to the first of diaphragm piece 1350
Hole is connected to, and becomes the aperture diaphragm of imaging len 1360.
Embodiment 13 is distinguished as with embodiment six：The illuminated component 1390 is two blue light laser diodes, institute
It states setting on catoptric arrangement 1342 and is coated with one layer of fluorescent powder to excited white light so that the white light of excitation equably illuminates
Fingerprint epidermis positioned at 1310 upper surface 1311 of glass cover-plate, the imaging len 1360 is by the gully texture knot of fingerprint epidermis
It constitutes as to below lens.Remaining opticpath, imaging process and other settings are identical with embodiment six, this
Place repeats no more.
The wavelength of the laser of the blue light laser diode is between 380nm~450nm.
The illuminated component 1390 or blue light LED light source, the wavelength of the blue light LED light source 380nm~
Between 450nm.
Embodiment 14
3 and Figure 34 are please referred to Fig.3, the present invention provides a kind of fingerprint recognition module for below screen, embodiment 13
With being distinguished as one~embodiment of above-described embodiment 13：It includes the fingerprint recognition module that multiple above-described embodiments one provide,
The fingerprint recognition module relatively large by being spliced to form an area between multiple small fingerprint identification modules, to obtain higher
Resolution ratio and distinguish speed.Multiple small fingerprints identification modules are sliceable for quadrangle, hexagon, octagon or other are more
Side shape or other shapes.
The small fingerprint identification module includes miniature backlight illuminating system and is installed in miniature backlight illuminating system
Imaging system, the screen component being installed in above miniature backlight illuminating system, the screen component include glass cover-plate 1610,
It is set to the display screen 1620 of 1610 lower section of glass cover-plate, is set to below display screen 1620 and is used to illuminate display screen 1620
Light guide plate 1630, be provided with guide-lighting region among the light guide plate 1630, the miniature backlight illuminating system includes for adjusting
The light conducting member 1640 for being installed in the lower section of light guide plate 1630 of whole light, be installed in 1640 side of light conducting member for generating
The illuminated component 1690 of light, the imaging system include the imaging len 1260 for imaging, are installed in imaging len 1660
The diaphragm piece of top is installed in the filter plate 1670 of 1660 lower section of imaging len, is installed in below filter plate 1670 and is used to connect
The imaging sensor 1680 of image is received, the diaphragm piece offers first through hole, and the light conducting member includes being opened in top
The horn mouth for limiting imaging angle of visual field in centre position, the reflecting surface being opened in below light conducting member.
The imaging system of each small-sized fingerprint recognition module needs after being imaged by the map sensor 1680 of lower section
Image procossing is carried out, the imaging except hexagon is cut off.Be cut into multiple small fingerprints after hexagon identification module at
Picture is stitched together, so that it may to form the complete image of a secondary larger area.The full graphics that Hu is finally completed to splicing carries out
Identification.
In the present embodiment, what large-scale fingerprint recognition module can also be provided by multiple one~embodiments of embodiment 12 appoints
One fingerprint recognition module is spliced.
In conclusion the configuration of the present invention is simple, at low cost, service life is high and good reliability, can eliminate simultaneously
Due to the stain caused by light guide plate trepanning on display screen, it can be used for common LCD touch display screens.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitute, combination, letter
Change, should be equivalent substitute mode, portion is included within protection scope of the present invention.
Claims (30)
1. a kind of fingerprint recognition module for below screen, including screen component, the miniature back of the body being installed in below screen component
Lighting system and the imaging system being installed in inside miniature backlight illuminating system, it is characterised in that：The miniature back lighting
System includes the light conducting member for adjusting light and the illuminated component for generating light, and the light conducting member includes that reflection is tied
Structure and the horn mouth for limiting imaging system field angle being set at the top of light conducting member, the catoptric arrangement are independently disposed to
Light conducting member bottom is set to light conducting member bottom and is integrally formed with light conducting member, and the catoptric arrangement includes from interior top
To the inclined reflecting surface in outer lower side, the imaging system is set to below horn mouth.
2. a kind of fingerprint recognition module for below screen according to claim 1, it is characterised in that：The luminous structure
Part is installed in the side of light conducting member, under or within, and the illuminated component vertically or is obliquely installed for level.
3. a kind of fingerprint recognition module for below screen according to claim 1, it is characterised in that：The imaging system
System includes the imaging len for imaging, the filter plate being installed in below imaging len, is installed in below filter plate and is used to connect
The imaging sensor of image is received, the filter plate is the infrared filter or transmission 760nm~1040nm for filtering infrared light
Waveband infrared spike filter.
4. a kind of fingerprint recognition module for below screen according to claim 3, it is characterised in that：The reflection knot
Structure includes the band saw dentation micro-structure for light distribution, and the band saw dentation micro-structure is total-reflection type micro-structure or total reflection
Micro-structure and the combination of half reflection micro-structure.
5. a kind of fingerprint recognition module for below screen according to claim 4, it is characterised in that：The imaging system
System further includes the diaphragm piece being installed in above imaging len, and the diaphragm piece is provided with first through hole, and the diaphragm piece is independently set
It is placed in above imaging len or is set to above imaging len and be wholely set with imaging system.
6. a kind of fingerprint recognition module for below screen according to claim 4, it is characterised in that：The reflecting surface
Angle with optical axis is 15 °~80 °.
7. a kind of fingerprint recognition module for below screen according to claim 6, it is characterised in that：The reflecting surface
Including multiple miniature sloping reflectors, cross section profile is directly linked together or passes through between the multiple miniature sloping reflector
It is connected for the curved surface of horizontal linear, angled straight lines or curve, the miniature sloping reflector is plane or curved surface.
8. a kind of fingerprint recognition module for below screen according to claim 7, it is characterised in that：It is described miniature to incline
The angle of inclination in oblique reflection face is correspondingly tapered into from interior top to outer lower side with reflecting surface, the miniature sloping reflector
Angle gradual change between 10 °~75 °, the angle of the miniature sloping reflector is set as the arrangement of gradual change from small to large or part
It is staggered.
9. a kind of fingerprint recognition module for below screen according to claim 8, it is characterised in that：The n-th
The angle of inclination of miniature sloping reflector is：
10. a kind of fingerprint recognition module for below screen according to claim 9, it is characterised in that：The leaded light
Component includes the collector lens that the light that illuminated component is sent out is collected and is collimated, outer for being totally reflected to light
Side.
11. a kind of fingerprint recognition module for below screen according to claim 10, it is characterised in that：The leaded light
Component further includes be positioned close to light conducting member inside bottom inclined for will be anti-by lateral surface from interior top to outer lower side
The light penetrated is transmitted to the transmission-type step surface on catoptric arrangement.
12. a kind of fingerprint recognition module for below screen according to claim 11, it is characterised in that：The optically focused
Lens are installed in light conducting member outer ring bottom, and the illuminated component is installed in below collector lens.
13. a kind of fingerprint recognition module for below screen according to claim 12, it is characterised in that：The outside
Light after being collimated by collector lens is totally reflected or is carried out part total reflection and part half reflection.
14. a kind of fingerprint recognition module for below screen according to claim 11, it is characterised in that：The optically focused
Lens are installed in the lower section of the lateral surface of light conducting member outer ring, and the light conducting member further includes for after to being collimated by collector lens
The medial surface that is reflected of light, the lateral surface carries out secondary reflection to the light reflected by medial surface.
15. a kind of fingerprint recognition module for below screen according to claim 11, it is characterised in that：The optically focused
Lens are installed in the lower section of the medial surface of light conducting member outer ring, and the lateral surface includes for the light after being collimated by collector lens
The first lateral surface that line is reflected, for carrying out the second lateral surface of secondary reflection to the light reflected by the first lateral surface.
16. a kind of fingerprint recognition module for below screen according to claim 10, it is characterised in that：The optically focused
Lens are installed in the lower section of the lateral surface of light conducting member outer ring, and the light conducting member further includes for after to being collimated by collector lens
The medial surface that is reflected of light, the lateral surface carries out secondary reflection, the leaded light structure to the light reflected by medial surface
Part further includes the light-emitting surface being installed at the top of light conducting member.
17. a kind of fingerprint recognition module for below screen according to claim 16, it is characterised in that：The light extraction
Face is zigzag Fresnel curved surface.
18. a kind of fingerprint recognition module for below screen according to claim 16, it is characterised in that：The imaging
System further includes the diaphragm piece being installed in above imaging len, and the diaphragm piece is provided with first through hole, and the catoptric arrangement is also
It is inclined for the light reflected by lateral surface to be reflected into from interior top to outer lower side in light conducting member bottom including being arranged
Reflective step surface on light-emitting surface.
19. a kind of fingerprint recognition module for below screen according to claim 9, it is characterised in that：The leaded light
Component further includes the light approaching face for being installed in its outer ring, and the illuminated component is installed on the outside of light conducting member.
20. a kind of fingerprint recognition module for below screen according to claim 19, it is characterised in that：The leaded light
Member bottom section is installed with inclined for the light reflected by lateral surface to be transmitted to catoptric arrangement from interior top to outer lower side
Transmission-type step surface, be installed with high reflecting assembly below the transmission-type step surface, the high reflecting assembly is independently disposed to
It is integrally formed below light conducting member or with light conducting member.
21. a kind of fingerprint recognition module for below screen according to claim 20, it is characterised in that：It is described high anti-
Optical assembly includes the micro-structure for mixed light, and white high glossy surface is coated with optical film or film with light reflection effect.
22. a kind of fingerprint recognition module for below screen according to claim 3, it is characterised in that：The imaging
The quantity of lens is a piece of, two panels or multi-disc.
23. a kind of fingerprint recognition module for below screen according to claim 22, it is characterised in that：The imaging
Lens are optical imaging lens, and the optical imaging lens are aspherics lens, diffraction optics toroidal lens or Fresnel
Toroidal lens.
24. a kind of fingerprint recognition module for below screen according to claim 2, it is characterised in that：It is described to shine
Component be several LED light sources, several laser light sources, several white LED light sources and IR LED infrared light sources combination or
Several white LED light sources and color LED light source combination.
25. a kind of fingerprint recognition module for below screen according to claim 5, it is characterised in that：The reflection
The surface of structure is provided with the fluorescent powder component for excited white light, and the illuminated component is at least two blue light laser diodes
Or blue light LED light source, the wavelength of the blue light diode or blue light LED light source is between 380nm~450nm.
26. according to a kind of fingerprint recognition module for below screen of claim 1~25 any one of them, feature exists
In：Including several miniature backlight illuminating systems of group and imaging system.
27. a kind of fingerprint recognition module for below screen according to claim 26, it is characterised in that：The screen
Component includes glass cover-plate, the display screen being set to below glass cover-plate, is set to below display screen and is used to illuminate display screen
Light guide plate, guide-lighting region is provided on the light guide plate, the light guide plate is set to above light conducting member.
28. a kind of fingerprint recognition module for below screen according to claim 27, it is characterised in that：The leaded light
Region is the guide-lighting through-hole being opened on light guide plate or the transparent flat or curved surface that are arranged on light guide plate.
29. a kind of fingerprint recognition module for below screen according to claim 28, it is characterised in that：The display
Screen is LCD liquid crystal display screen, OLED display screen or micro- LED array display screen.
30. a kind of fingerprint recognition module for below screen according to claim 29, it is characterised in that：The leaded light
Component is circle, ellipse, rectangular, triangle, polygon or irregular figure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425183.XA CN108446677A (en) | 2018-05-03 | 2018-05-03 | A kind of fingerprint recognition module for below screen |
| PCT/CN2018/094732 WO2019210572A1 (en) | 2018-05-03 | 2018-07-06 | Fingerprint recognition module used below screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425183.XA CN108446677A (en) | 2018-05-03 | 2018-05-03 | A kind of fingerprint recognition module for below screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108446677A true CN108446677A (en) | 2018-08-24 |
Family
ID=63202313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810425183.XA Pending CN108446677A (en) | 2018-05-03 | 2018-05-03 | A kind of fingerprint recognition module for below screen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108446677A (en) |
| WO (1) | WO2019210572A1 (en) |
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