CN109902664A - Infrared backlight unit, detection mould group, backlight module, display device and electronic equipment - Google Patents
Infrared backlight unit, detection mould group, backlight module, display device and electronic equipment Download PDFInfo
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- CN109902664A CN109902664A CN201910224666.8A CN201910224666A CN109902664A CN 109902664 A CN109902664 A CN 109902664A CN 201910224666 A CN201910224666 A CN 201910224666A CN 109902664 A CN109902664 A CN 109902664A
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Abstract
The invention discloses a kind of infrared backlight units, including transmitting unit, and for emitting infrared beam, the infrared beam can be used in detecting external object biological information, or draw the image of external object, or detection external object space coordinate variation；Optical waveguide layer enters the optical waveguide layer from the side for the infrared beam and is emitted from the upper surface including connected side and upper surface；A receiving unit below the infrared backlight unit is arranged in can receive the infrared beam after external object reflection through the infrared backlight unit.The detection mould group including infrared backlight unit that the invention also discloses a kind of, the backlight module that the detection mould group of arranging in pairs or groups uses, and display device and electronic equipment including above-mentioned detection mould group and backlight module.The present invention has preferable visual effect.
Description
Technical field
The present invention relates to field of photoelectric technology more particularly to a kind of detection mould group, backlight module, display device and electronics to set
It is standby.
Background technique
As technological progress and people's living standard improve, for the electronic products such as mobile phone, tablet computer, camera, user
Require more multi-functional and fashion appeal.Currently, the development trend of mobile phone is frivolous, close screen comprehensively, while having preposition
The functions such as camera self-timer and recognition of face.And as the function that electronic equipment is supported is more and more abundant, the element for needing to be arranged
Quantity is also more and more, needs to occupy the position of the positive display area of a part of electronic equipment, influences beautiful and user experience.
Recently, in order to realize screen comprehensively or close to screen effect comprehensively, shield lower biological characteristic detection technique and come into being, also
It is the lower section that biological characteristic detection mould group is placed on to display screen, infrared beam is sent or received by display screen and realizes biological characteristic
Detection.However for the display screen of non-spontaneous light type, such as liquid crystal display, shields lower biological characteristic detection and need to solve screen
The problem of about infrared beam transmitance.Part manufacturer, which is proposed, is placed on biological characteristic detection mould group below backlight module, and
To on entire display screen and the scheme of backlight module aperture.Although this scheme can be realized the lower biological characteristic detection of screen, but need
Relative complex technique is wanted, product cost is higher, and due to needing the aperture on screen and backlight module, so that screen is whole
The visual effect of display is poor.
Summary of the invention
In view of this, the present invention provide it is a kind of for solve prior art problem under shielding infrared backlight unit,
Detect mould group, backlight module, display device and electronic equipment.
One aspect of the present invention discloses a kind of infrared backlight unit, including transmitting unit, for emitting infrared beam,
The infrared beam can be used in detecting external object biological information, or draw the image of external object, or detection is external
Object space changes in coordinates；Optical waveguide layer enters for the infrared beam from the side including connected side and upper surface
The optical waveguide layer is simultaneously emitted from the upper surface；A receiving unit being arranged in below the optical waveguide layer can be through described
Infrared backlight unit receives the infrared beam after external object reflection.
Optionally, further include be successively set on the optical waveguide layer for dissipate the infrared beam diffusion sheet and/
Or the prismatic lens for increasing the infrared beam brightness in detection range corresponding angle, the infrared backlight unit can penetrate one
A display module emits and receives the infrared beam, and the infrared beam can be used in the biological characteristic detection of external object.
Optionally, the optical waveguide layer has the aperture of a corresponding receiving unit, and the receiving unit penetrates the aperture
Receive the reflected infrared beam of external object.
Optionally, the transmitting unit adjacent to the optical waveguide layer a side be arranged, the optical waveguide layer have and it is described
Light shield layer is arranged in corresponding first aperture of receiving unit, the first aperture inside, and the light shield layer can prevent described infrared
Light penetrates.
Optionally, the infrared backlight unit further includes the reflecting layer being arranged in below the optical waveguide layer, the reflecting layer
With the second aperture corresponding with the receiving unit, the light shield layer is set, the light shield layer is adopted on the inside of second aperture
It being manufactured with light-proof material, the light shield layer is close to the backlight module being located above an infrared backlight unit setting,
It can be used in that the infrared beam is stopped to reflect without external object and be directly entered the receiving unit, and reduce external miscellaneous
Astigmatism enters the receiving unit.
Optionally, the reflecting layer is used to enter from the optical waveguide layer side optical waveguide layer and under the optical waveguide layer
Enter the optical waveguide layer after the part infrared beam reflection being just emitted.
One aspect of the present invention discloses a kind of detection mould group, including above-mentioned infrared backlight unit and is arranged described
Receiving unit below infrared backlight unit, the detection mould group can receive and/or emit infrared through a display module
Light beam.
One aspect of the present invention discloses a kind of backlight module, and a detection mould below the backlight module is arranged in
Group can emit through the backlight module and receive infrared beam, and the backlight module includes light guide plate, is arranged and leads described
Reflector plate below tabula rasa, the diffusion sheet being arranged in above the light guide plate and the backlight light that the light guide plate one side is set
Source, the back light are used to provide the backlight beam shown for image, and the light guide plate includes opposite with the diffusion sheet
Light-emitting surface and the incidence surface that is connected with the light-emitting surface, the light guide plate, which is used to receive from the incidence surface, comes from back light
Backlight beam and be emitted the backlight beam from the light-emitting surface, the reflector plate is for will be from the light guide plate bottom outlet
Part backlight beam be reflected into the light guide plate and penetrate the infrared beam.
One aspect of the present invention discloses a kind of display device, including display module and is arranged in below display module
Mould group is detected, the display module can emit the backlight beam for display, and the detection mould group can penetrate the display
The transmitting of mould group and reception infrared beam, the detection mould group are above-mentioned detection mould group.
Optionally, the display module includes display panel and the backlight mould that is arranged in below the liquid crystal display panel
Group, the backlight module as described above, the detection mould group be arranged below the backlight module, it is described detection mould group transmitting
Infrared beam is successively emitted to outside through the backlight module, display panel, and successively penetrates institute after being reflected by external object
State display panel, the backlight module reaches the detection mould group.The detection mould group includes that infrared backlight unit and setting exist
Receiving unit below the infrared backlight unit, the infrared backlight unit are above-mentioned infrared backlight unit.
One aspect of the present invention discloses a kind of electronic equipment comprising above-mentioned infrared backlight unit or above-mentioned
Detect mould group or above-mentioned backlight module or above-mentioned display device.
Compared to the prior art, infrared backlight unit of the present invention, detection mould group, backlight module, display device and electronics are set
Standby to emit and receive infrared beam through display module using detection mould group, infrared backlight unit is capable of providing uniform face and shines
Infrared light, do not need to punch the detection and identification that just can be realized under screen to external object in display module, have simultaneously
Preferable entirety visual effect and user experience.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the present of invention；
Fig. 2 is the schematic diagram of the diffusion sheet of one embodiment of the invention；
Fig. 3 is the transmittance curve schematic diagram of the reflector plate of one embodiment of the invention；
The schematic diagram of one embodiment of this hair of Fig. 4 invention；
Fig. 5 is the schematic diagram of one embodiment of the present of invention；
Fig. 6 is the schematic diagram of one embodiment of the present of invention.
Specific embodiment
In the specific descriptions to the embodiment of the present invention, it should be understood that when substrate, frame, piece, layer or pattern are referred to as
When "above" or "below" another substrate, another piece, another layer or another pattern, it can " directly " or " indirectly "
On another substrate, another piece, another layer or another pattern, or there may also be one or more middle layers.
For purposes of clarity, it each of can exaggerate, omit or schematically show Figure of description the thickness of layer and big
It is small.In addition, the size of element and non-fully reflecting actual size in attached drawing.
In one embodiment of the present of invention, a kind of infrared backlight unit includes transmitting unit, for emitting infrared beam, institute
Stating infrared beam can be used in detecting external object biological information, or draw the image of external object, or detection is external right
Image space changes in coordinates；Optical waveguide layer enters institute from the side for the infrared beam including connected side and upper surface
It states optical waveguide layer and is emitted from the upper surface；A receiving unit below the infrared backlight unit, which is arranged in, to be penetrated
The infrared backlight unit receives the infrared beam after external object reflection.
Above-mentioned infrared backlight unit further includes being successively set on the optical waveguide layer to be used to dissipate the infrared beam
Diffusion sheet and/or prismatic lens for increasing the infrared beam brightness in detection range corresponding angle, the infrared backlight unit
Through a display module transmitting and the infrared beam can be received, the infrared beam can be used in the biology of external object
Feature detection.
The infrared backlight unit has the aperture of the corresponding receiving unit, and the receiving unit connects through the aperture
Receive the reflected infrared beam of external object.The transmitting unit is arranged adjacent to a side of the optical waveguide layer, described to lead
Photosphere has the first aperture corresponding with the receiving unit, and light shield layer, the light shield layer energy is arranged on the inside of first aperture
The infrared light is enough prevented to penetrate.
The infrared backlight unit further includes the reflecting layer being arranged in below the optical waveguide layer, and the reflecting layer has and institute
Corresponding second aperture of receiving unit is stated, the light shield layer is set on the inside of second aperture, and the light shield layer is using opaque
Material manufacture, the light shield layer are close to the backlight module being located above an infrared backlight unit setting, be can be used in
Stop the infrared beam to reflect without external object and be directly entered the receiving unit, and reduces external stray light and enter
The receiving unit.The reflecting layer is used to enter from the optical waveguide layer side optical waveguide layer and below the optical waveguide layer
Enter the optical waveguide layer after the part infrared beam reflection of outgoing.
In one embodiment of the present of invention, a kind of detection mould group includes above-mentioned infrared backlight unit and is arranged described red
Receiving unit below outer back light unit, the detection mould group can be received through a display module and/or transmitting infrared light
Beam.
One aspect of the present invention discloses a kind of backlight module, and a detection mould below the backlight module is arranged in
Group can emit through the backlight module and receive infrared beam, and the backlight module includes light guide plate, is arranged and leads described
Reflector plate below tabula rasa, the diffusion sheet being arranged in above the light guide plate and the backlight light that the light guide plate one side is set
Source, the back light are used to provide the backlight beam shown for image, and the light guide plate includes opposite with the diffusion sheet
Light-emitting surface and the incidence surface that is connected with the light-emitting surface, the light guide plate, which is used to receive from the incidence surface, comes from back light
Backlight beam and be emitted the backlight beam from the light-emitting surface, the reflector plate is for will be from the light guide plate bottom outlet
Part backlight beam be reflected into the light guide plate and penetrate the infrared beam.The diffusion sheet includes quantum dot film, receives
One of rice perforated membrane, polyethylene terephthalate or other petchems, the diffusion sheet is to the infrared light
Beam transmitance is greater than 50%.The reflector plate is formed by multilayer optical membrane stack, and the multi-layer optical film is to infrared light and infrared
Light beam has different refractive index, makes the reflector plate be greater than 90% to visible reflectance by optical modulation, to described
Infrared beam transmitance is greater than 90%.
In one embodiment of the present of invention, a kind of display device includes display module and the inspection that is arranged in below display module
Mould group is surveyed, the display module can emit the backlight beam for display, and the detection mould group can penetrate the display mould
Group transmitting and reception infrared beam, the detection mould group are above-mentioned detection mould group.The display module include display panel and
Backlight module below the liquid crystal display panel is set, and the backlight module is as described above, detection mould group setting exists
Below the backlight module, the infrared beam of the detection mould group transmitting is successively emitted through the backlight module, display panel
The detection mould group successively is reached through the display panel, the backlight module to outside, and after being reflected by external object.
In one embodiment of the present of invention, a kind of electronic equipment includes above-mentioned infrared backlight unit or above-mentioned detection
Mould group or above-mentioned backlight module or above-mentioned display device.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a display device 1 includes display module 20 and is arranged in institute in one embodiment of the present of invention
State the detection mould group 10 at 20 lower section of display module or the back side.The detection mould group 10 can through the display module 20 transmitting and
Receive infrared beam 101.
In the present embodiment, the detection mould group 10 can emit infrared beam to the display through the display module 20
20 surface of mould group or outside, and the infrared beam reflected by external object 1000 is received through the display module 20.Institute
Stating display module 20 can be used in showing image, and can provide the user with contact or contactless human-computer interaction interface.
The detection mould group 10 includes infrared backlight unit 11 and the reception being arranged in below the infrared backlight unit 11
Unit 13.The infrared backlight unit 11 is capable of providing the luminous infrared beam 101 in uniform face.The receiving unit 13 can
The infrared beam 101 reflected by external object 1000 is received through the infrared backlight unit 11, the display module 20.
The infrared backlight unit 11 includes the substantially optical waveguide layer 111 of plate-like structure and setting in the optical waveguide layer
The transmitting unit 12 of 111 side.The transmitting unit 12 is arranged adjacent to the optical waveguide layer 111, for emitting infrared light
Beam 101.The optical waveguide layer 111 includes connected side (not labeled) and upper surface (not labeled), for making the infrared beam
101 enter the optical waveguide layer 111 from the side of the optical waveguide layer 111 and are divergently emitted from the upper surface of the optical waveguide layer 111.
The transmitting unit 12 is arranged adjacent to the side of the optical waveguide layer 111.The receiving unit 13 is arranged in the infrared backlight list
The lower section of member 11, for receiving the infrared beam 101 after being reflected by external object 1000 through the infrared backlight unit 11.
In the present embodiment, the infrared backlight unit 11 further includes the reflecting layer being arranged in below the optical waveguide layer 111
112.After the infrared beam 101 that the transmitting unit 12 emits enters optical waveguide layer 111, part infrared beam 101 by reflection and/
Or it is emitted to 20 lower section of display module from the upper surface of optical waveguide layer 111 after refraction, and the display module 20 can be penetrated
Reach 20 outer surface of display module or its outside.The infrared beam 101 can penetrate after being reflected by external object 1000
The display module 20 and infrared backlight unit 11 are received by the receiving unit 13.
In the present embodiment, the infrared beam 101 can be used in the two dimension of external object and/or 3-D image is drawn, or
Living things feature recognition of the person for the two dimension and/or three-dimensional of external object.
In the present embodiment, the infrared beam 101 is infrared light.In other change embodiments, the infrared beam 101 is also
It can be visible light, black light, electromagnetic wave, ultrasonic wave, ultraviolet lamp.
The infrared backlight unit 11 has the aperture 114 of the corresponding receiving unit 13, and the receiving unit 13 penetrates
The aperture 114 receives the reflected infrared beam 101 of external object 1000.Specifically, the infrared backlight unit 11 wraps
Include transmitting unit 12, optical waveguide layer 111 and the reflecting layer 112 being arranged in below optical waveguide layer 111.In the present embodiment, the optical waveguide layer
111 have opposite upper and lower surfaces, and around four sides of the upper and lower surfaces.The transmitting unit
12 adjacent to the optical waveguide layer 111 a side (not labeled) be arranged, the optical waveguide layer 111 have and the receiving unit 13 it is right
The the first aperture (not labeled) answered, the reflecting layer 112 have second aperture (not labeled) corresponding with the receiving unit 13,
First aperture and the second aperture collectively form the aperture 114, and light shield layer 113 is arranged in the inside of the aperture 114, described
Light shield layer 113 can prevent the detection light 101 from penetrating.
In the change embodiment of above-described embodiment, the infrared backlight unit 11 can also include being successively set on described lead
On photosphere 111 for dissipate the infrared beam 101 diffusion sheet (Diffusion Sheet) and/or for increase detection
The prismatic lens (Prism Sheet) of 101 brightness of infrared beam in range corresponding angle.Example in the detection range corresponding angle
The such as, but not limited to, described prismatic lens normal is in 60 degree of angular regions or in 70 degree of angular regions or in 80 degree of angular regions etc..
In the present embodiment, first aperture is different with the pore size of the second aperture, and the aperture of first aperture is small
In the aperture of second aperture, the light shield layer 113 covers first aperture and the second aperture junction because of above-mentioned hole
The step surface that diameter difference is formed.
In the present embodiment, shown transmitting unit 112 may include one or more light-emitting components, and shown light-emitting component is for example
But it is not limited to light emitting diode (LED), vertical cavity surface emitting laser (Vertical Cavity Surface Emitting
) or other light emitting components Laser.The receiving unit 13 may include infrared image sensor, can receive infrared beam
And be converted to corresponding electric signal.Other are changed in embodiment, and the receiving unit 13 may include visible light image sensor,
Or other types photoelectric conversion chip.
Transmitting unit 12 shown in Fig. 1 and receiving unit 13 are only to schematically show, do not represent transmitting unit 12, receive list
Any restriction of member 13 and the shape, structure between them and positional relationship.
The present invention other or change embodiment in, the pore size of first aperture and the second aperture can be identical,
The aperture that can be first aperture is greater than the aperture of second aperture.
The display module 20 display panel 21 and the backlight module 22 that is arranged in below the display panel 21.It is described aobvious
Show that panel 21 can be used in image and show, the backlight module 22 can provide to the display panel 21 and be used for what image was shown
Backlight beam.In the present embodiment, the backlight beam is such as, but not limited to visible light.
The display panel 21 includes panel layer 211 and the protective layer 212 being arranged on panel layer.The backlight module 22
Including light guide plate 222, the reflector plate being arranged in below light guide plate 222 221,223 and of diffusion sheet that 222 top of light guide plate is arranged in
The back light 224 that the side of the neighbouring light guide plate 222 is arranged.The detection mould group 10 is arranged under the reflector plate 221
Side.The display panel 21 is arranged above the diffusion sheet 223.The back light 224 is used for the display panel 21
Image is provided and shows required backlight beam.The light guide plate 222 includes that the light-emitting surface opposite with the diffusion sheet 223 (is not marked
Number) and the incidence surface (not labeled) that is connected with the light-emitting surface, the light guide plate 222 be used to receive from the incidence surface from back
The backlight beam of radiant 224 is simultaneously emitted the backlight beam from the light-emitting surface.The reflector plate 221 from described for that will lead
The part backlight beam of 222 bottom outlet of tabula rasa is reflected into the light guide plate 222 and penetrates the infrared beam 101.It is described
Diffusion sheet 223 is used to dissipate the backlight beam that the light-emitting surface of the light guide plate 222 is emitted so that the backlight beam compared with
It is uniform diverging into the display panel 21.
In the present embodiment, the light shield layer 113 is close to the reflector plate 221 and is arranged, and can effectively prevent the infrared light
Beam 101 directly enters the receiving unit 13 from the transmitting unit 12, while can reduce external stray light and come from aobvious
Show the reflected light interference of panel 21 and reflector plate 221.
In the present embodiment, the diffusion sheet 223 includes quantum dot film, nano-porous films, polyethylene terephthalate
Or one of other petchems.
Referring to Fig. 2, the diffusion sheet 223 includes matrix 2231 and sets when the diffusion sheet 223 includes quantum dot film
Set multiple quantum dots 2232 in matrix 2231.The backlight beam that the back light 224 provides can be blue light, described
A part in blue light can be converted to red light and green light, the red by the quantum dot 2232 in the quantum dot film
Light, green light and part blue light can be mixed to form white light, and the white light can be used for the image of the display panel 21
Display.In the change embodiment of the present embodiment, the back light 224 can emitting ultraviolet light, the diffusion sheet 223 can will
Ultraviolet light from back light 224 is converted to red light, green light and blue light, red light, green light after the conversion
White light, which can be mixed into, with blue light and is supplied to the display panel 21 shows for image.
As shown in Fig. 2, the diffusion sheet 223 has the infrared beam 101 in the present embodiment and in change embodiment
Preferable transmitance, such as, but not limited to, when infrared beam 101 is infrared light, the diffusion sheet 223 is to the infrared beam
101 transmitances are greater than 50%.
In the present embodiment, the panel layer 211 includes two substrates being oppositely arranged and the liquid crystal layer between two substrates.
The display panel 21 is liquid crystal display panel.The protective layer 212 is cover-plate glass.The display panel 21 can penetrate institute
Infrared beam 101 is stated, substrate, liquid crystal layer and the cover-plate glass of the display panel 21 have the infrared beam 101 preferable
Transmitance.
In the present embodiment, the reflector plate 221 can reflect visible light and penetrate infrared beam 101.Such as, but not limited to,
The reflector plate 221 is formed by multilayer optical membrane stack, and the multi-layer optical film has difference to infrared beam 101 and visible light
Refractive index, make the reflector plate that there is the reflectivity, saturating less than 0.1% greater than 90% to visible light by optical modulation
Rate is crossed, and has to infrared beam 101 and is greater than 90% transmitance.
Referring to Fig. 3, the reflector plate 221 is to red between wavelength 900nm~1000nm in one embodiment of the invention
Outer light transmission rate is greater than 90%, to visible light transmittance less than 0.1%.
In embodiment of the present invention or change embodiment, the infrared beam 101 may include floodlight (Flood
Light, the irradiation area that floodlight refers to is relatively wide and the light beam of irradiating angle diverging), pattern light, coded structured light modulates arteries and veins
It rushes one or more in signal.
Referring to Fig. 4, being the schematic diagram of a change embodiment of display device 1 shown in Fig. 1.It is described in the present embodiment
Receiving unit 13 and the transmitting unit 12 are arranged below the display module 20 adjacent to 20 bottom of display module.It is described
Transmitting unit 12 emits after infrared beam 101 penetrates the display module 20 to be reflected by external object, and is again passed through described aobvious
Show that mould group 20 receives and can be used for detecting the biological characteristic of external object by the receiving unit 13, or external right for drawing
The space coordinates variation such as movement or distance as image, or for detecting external object.
Referring to Fig. 5, being the schematic diagram of a change embodiment of display device 1 shown in Fig. 1.It is described in the present embodiment
Transmitting unit 12 is arranged adjacent to 20 bottom of display module (being the bottom as viewed from 1 front of display device in Fig. 5) described
20 lower section of display module.The quantity of the receiving unit 13 is two, and the receiving unit 13 is pushed up adjacent to the display module 20
Portion is arranged below the display module 20.In the present embodiment, described two receiving units 13 can be received respectively by external right
As the infrared beam 101 of 1000 reflections, and it is external right by binocular stereo vision (Binocular Stereo Vision) acquisition
As 1000 three-dimensional biological information, or the 3-D image of external object is drawn, or detection external object is in three-dimensional space
In the coordinates such as direction, distance variation.
Referring to Fig. 6, being the schematic diagram of a change embodiment of display device 1 shown in Fig. 1.It is described in the present embodiment
Receiving unit 13 is adjacent to the side (bottom position in Fig. 6 as viewed from 20 front of display module) of the display module 20
It is arranged below the display module 20.The quantity of the transmitting unit 12 is two, is separately positioned on the display module 20
Two sides of the bottom.
In above-described embodiment or change embodiment, the detection mould group 20 can also include processor (not shown), described
Processor can according to the received infrared beam 101 of the receiving unit 13 obtain external object 1000 two-dimensional signal and/or
Depth information.Further, biological information data are also stored in advance in the processor, and the processor can be by that will obtain
The two-dimensional signal and/or depth information of the external object 1000 obtained and pre-stored biological information data are compared,
To realize the biological characteristic detection and identification of external object, such as, but not limited to: fingerprint recognition, face recognition, iris recognition
Deng.
It is detected and is identified by the biological characteristic to external object 1000, the detection mould group 10 can be applied to show
Device 1 locks or unlocks, the verifying of on-line payment business, the authentication of financial system or public security system, and access control system is led to
Multiple products and the application scenarios such as row verifying.
Therefore, the display device 1 can be used in external object two dimension and/or three-dimensional biological characteristic detection and identification,
Perhaps it is sat for external object two dimension and/or three-dimensional Image Rendering or for external object two dimension and/or three-dimensional space
Mark detection.
In embodiment of the present invention and change embodiment, the external object 1000 includes but is not limited to that finger (refers to
Line), iris, face etc..
The present invention is above-mentioned or changes in embodiment, and the transmitting unit 12, the position of receiving unit 13 and quantity can have
There are different settings, the present invention is with no restriction.
The present invention also provides a kind of infrared backlight unit, the infrared backlight unit includes that above-described embodiment and change are implemented
Infrared backlight unit 11 described in example, can be used for the display device 1 or it is changed in embodiment.
The present invention also provides a kind of detection mould group, the detection mould group includes that above-mentioned detection mould group 10 or its change are implemented
Example, can be used for the display device 1 or it is changed in embodiment.
The present invention also provides a kind of backlight module, can arrange in pairs or groups above-mentioned detection mould group of the backlight module is used.The back
Optical mode group includes above-mentioned backlight module 22 or it changes embodiment, can be used for the display device 1 or it is changed in embodiment.
The present invention also provides a kind of electronic equipment, the electronic equipment includes above-mentioned display device 1 or it changes embodiment.
The electronic equipment can be mobile phone, tablet computer, smartwatch, augmented reality/virtual reality device, human action detection dress
Set, autonomous driving vehicle, smart home device, security device, intelligent robot or other have can be used in object organisms spy
The electronic equipment of sign detection and identification.
Compared to the prior art, infrared backlight unit 11 of the present invention, detection mould group 10, backlight module 20, display device 11
Emit and receive infrared beam through display module 20 using detection mould group 10 with electronic equipment, and uses infrared backlight unit
11 provide uniform face luminous infrared beam.Not needing to punch in display module 20 just can realize under screen to external object
1000 detection and identification, while there is preferable whole visual effect and user experience.
It should be noted that it will be understood by those skilled in the art that without creative efforts, the present invention
Some or all of embodiment, and the deformation for some or all of embodiment, replacement, change, fractionation, combination, extension
Deng being considered as being covered by innovation and creation thought of the invention, belong to the scope of protection of the present invention.
Knot is indicated for any reference of " one embodiment ", " embodiment ", " example embodiment " etc. in the present specification
The a particular feature, structure, or characteristic for closing embodiment description is included at least one embodiment of the invention.In this explanation
This phrase that different location occurs in book might not all refer to identical embodiment.In addition, when combining any embodiment to retouch
When stating specific feature or structure, advocated, realizes this feature or knot in conjunction with the other embodiments of these embodiments
Structure is within the technical scope of those skilled in the art.
" length " that is likely to occur in description of the invention, " width ", "upper", "lower", "front", "rear", " back side ", " just
The orientation or positional relationship of the instructions such as face ", "vertical", "horizontal", " top ", " bottom ", " inside ", " outside " is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of the description embodiment of the present invention and simplify description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.Similar label and letter indicate similar terms in the accompanying drawings, therefore, once determined in a certain Xiang Yi attached drawing
Justice does not need then that it is further defined and explained in subsequent attached drawing.Meanwhile in the description of the present invention, term
" first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.In description of the invention
In, " a variety of " or the meaning of " plurality " is at least two or two, unless otherwise specifically defined.Description of the invention
In, it is also necessary to explanation is unless specifically defined or limited otherwise, " setting ", " installation ", " connection " shall be understood in a broad sense,
It for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to electricity
Connection；It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be the connection inside two elements.It is right
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Term used in claims, which should not be construed as to invent, is limited to this explanation
Specific embodiment disclosed in book.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of infrared backlight unit characterized by comprising
Transmitting unit, for emitting infrared beam, the infrared beam can be used in detecting external object biological information,
And/or the image of external object is drawn, and/or detection external object space coordinate variation；
Optical waveguide layer enters the optical waveguide layer simultaneously from the side for the infrared beam including connected side and upper surface
It is emitted from the upper surface；Wherein, be arranged in a receiving unit below the infrared backlight unit can penetrate it is described red
Outer back light unit receives the infrared beam after external object reflection.
2. infrared backlight unit according to claim 1, which is characterized in that further include being successively set on the optical waveguide layer
For dissipating the diffusion sheet of the infrared beam and/or for increasing the infrared beam brightness in detection range corresponding angle
Prismatic lens, the infrared backlight unit can emit through a display module and receive the infrared beam, the infrared light
Beam can be used in the biological characteristic detection of external object.
3. infrared backlight unit according to claim 1, which is characterized in that the infrared backlight unit has one corresponding
The aperture of receiving unit, the receiving unit can receive the reflected infrared beam of external object through the aperture.
4. infrared backlight unit according to claim 1, which is characterized in that the transmitting unit is adjacent to the optical waveguide layer
One side setting, the optical waveguide layer have the first aperture corresponding with a receiving unit, setting on the inside of first aperture
Light shield layer, the light shield layer can prevent the detection light from penetrating.
5. infrared backlight unit according to claim 4, which is characterized in that the infrared backlight unit further includes that setting exists
Reflecting layer below the optical waveguide layer, the reflecting layer have the second aperture corresponding with the receiving unit, and described second opens
The light shield layer is set on the inside of hole, and the light shield layer is manufactured using light-proof material, and the light shield layer is close to one and is arranged in institute
The backlight module setting above infrared backlight unit is stated, can be used in stopping the infrared beam straight without external object reflection
It taps into the receiving unit, and reduces external stray light and enter the receiving unit.
6. infrared backlight unit according to claim 5, which is characterized in that the reflecting layer is used for will be from the optical waveguide layer
Side enters the optical waveguide layer and enters the optical waveguide layer after the part infrared beam reflection of outgoing below the optical waveguide layer.
7. a kind of detection mould group, which is characterized in that the detection mould group include infrared backlight unit described in claim 1~7,
With the receiving unit being arranged in below the infrared backlight unit, the detection mould group can be received through a display module
And/or transmitting infrared beam.
8. a kind of backlight module, which is characterized in that a detection mould group below the backlight module, which is arranged in, can penetrate institute
State backlight module transmitting and receive infrared beam, the backlight module include light guide plate, be arranged in it is anti-below the light guide plate
Penetrate piece, the diffusion sheet being arranged in above the light guide plate and the back light that the light guide plate one side is set, the backlight
Light source, which is used to provide, is used for the backlight beam that shows of image, the light guide plate include the light-emitting surface opposite with the diffusion sheet and with
The connected incidence surface of the light-emitting surface, the light guide plate are used to receive the backlight beam from back light simultaneously from the incidence surface
The backlight beam is emitted from the light-emitting surface, and the reflector plate is used for will be from the part backlight light of the light guide plate bottom outlet
Beam is reflected into the light guide plate and penetrates the infrared beam.
9. a kind of display device, which is characterized in that described including display module and the detection mould group being arranged in below display module
Display module can emit the backlight beam for display, and the detection mould group can emit and receive through the display module
Infrared beam, the detection mould group are detection mould group as claimed in claim 7.
10. display device according to claim 9, which is characterized in that the display module includes display panel and setting
Backlight module below the display panel, the backlight module is as described in claim 8~10, the detection mould group setting
Below the backlight module, the infrared beam of the detection mould group transmitting successively goes out through the backlight module, display panel
It is mapped to outside, and successively reaches the detection mould group through the display panel, the backlight module after being reflected by external object,
The detection mould group is detection mould group as claimed in claim 7.
11. a kind of electronic equipment, which is characterized in that including as described in claim 1~6 infrared backlight unit or right want
Display device described in detection mould group or backlight module as claimed in claim 8 or claim 9~10 described in asking 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224666.8A CN109902664A (en) | 2019-03-23 | 2019-03-23 | Infrared backlight unit, detection mould group, backlight module, display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224666.8A CN109902664A (en) | 2019-03-23 | 2019-03-23 | Infrared backlight unit, detection mould group, backlight module, display device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109902664A true CN109902664A (en) | 2019-06-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910224666.8A Withdrawn CN109902664A (en) | 2019-03-23 | 2019-03-23 | Infrared backlight unit, detection mould group, backlight module, display device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109902664A (en) |
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| CN110309748A (en) * | 2019-06-23 | 2019-10-08 | 深圳阜时科技有限公司 | Biological characteristic detection system |
| CN110427919A (en) * | 2019-08-16 | 2019-11-08 | 深圳阜时科技有限公司 | Optical detection apparatus |
| CN110458124A (en) * | 2019-08-16 | 2019-11-15 | 深圳阜时科技有限公司 | Optical detection apparatus |
| CN111104919A (en) * | 2019-10-16 | 2020-05-05 | 深圳阜时科技有限公司 | Optical detection device and electronic apparatus |
| CN111160324A (en) * | 2020-02-26 | 2020-05-15 | 武汉华星光电技术有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| WO2020258767A1 (en) * | 2019-06-28 | 2020-12-30 | 深圳市隆利科技股份有限公司 | Quantum dot backlight module and electronic device |
| CN112417933A (en) * | 2019-08-23 | 2021-02-26 | 华为技术有限公司 | Backlight module and electronic equipment |
| WO2021119923A1 (en) * | 2019-12-16 | 2021-06-24 | 京东方科技集团股份有限公司 | Display module and display device |
| CN115499638A (en) * | 2021-06-17 | 2022-12-20 | 深圳市光鉴科技有限公司 | Display device and electronic equipment with 3D module of making a video recording |
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| CN110309748A (en) * | 2019-06-23 | 2019-10-08 | 深圳阜时科技有限公司 | Biological characteristic detection system |
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| CN110458124A (en) * | 2019-08-16 | 2019-11-15 | 深圳阜时科技有限公司 | Optical detection apparatus |
| CN112417933A (en) * | 2019-08-23 | 2021-02-26 | 华为技术有限公司 | Backlight module and electronic equipment |
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| WO2021168973A1 (en) * | 2020-02-26 | 2021-09-02 | 武汉华星光电技术有限公司 | Liquid crystal display device |
| CN115499638A (en) * | 2021-06-17 | 2022-12-20 | 深圳市光鉴科技有限公司 | Display device and electronic equipment with 3D module of making a video recording |
| CN115499638B (en) * | 2021-06-17 | 2024-05-07 | 深圳市光鉴科技有限公司 | Display device and electronic equipment with 3D camera module |
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Application publication date: 20190618 |