CN110376780A - Shield lower detection system, liquid crystal display device and backlight module - Google Patents
Shield lower detection system, liquid crystal display device and backlight module Download PDFInfo
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- CN110376780A CN110376780A CN201910658132.6A CN201910658132A CN110376780A CN 110376780 A CN110376780 A CN 110376780A CN 201910658132 A CN201910658132 A CN 201910658132A CN 110376780 A CN110376780 A CN 110376780A
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G06V40/70—Multimodal biometrics, e.g. combining information from different biometric modalities
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses detection systems under a kind of screen; including display device and detection mould group; detection mould group can receive the detection light beam from external object through at least part of display device and be converted to electric signal; display device includes backlight module, display panel and cover sheet, and the backlight module includes light guide plate, first light source and second light source.First light source includes multiple the first luminescence units for light guide plate side-emitted backlight beam.Second light source is located at below first light source; second light source is for towards the top of cover sheet transmitting detection light beam, detection light beam can to penetrate interval and cover sheet arrival external object between multiple first luminescence units itself and/or the multiple first luminescence unit.The biological characteristic that light beam is detected for external object detects, and the wavelength for detecting light beam is different from the wavelength of the backlight beam.The present invention has detection effect and preferable user experience under preferable shield.
Description
Technical field
The present invention relates to detection system and its display device and backlight moulds under field of photoelectric technology more particularly to a kind of screen
Group.
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 screen accounting with higher while having preposition
The functions such as camera self-timer and recognition of face.And as the function that mobile phone is supported is more and more abundant, the number of elements for needing to be arranged
Also more and more, it needs to occupy the position of a part of display area, influences beautiful and user experience.
Recently, it in order to realize screen comprehensively or close to screen effect comprehensively, is expected to that the light source of detection light beam and detection mould will be emitted
Group is placed on inside display device or lower section is to realize detection and identification under screen.However, the prior art can't solve to detect
The problems such as how light beam penetrates display device transmitting and receives.
Summary of the invention
In view of this, the present invention provides and a kind of can be used in shielding the detection of lower biological characteristic for solve prior art problem
Or detection system, liquid crystal display device and backlight module under the screen of other detections.
One aspect of the present invention provides detection system under a kind of screen, including display device and detection mould group, the detection
Mould group can receive the detection light beam from external object through at least part of display device and be converted to electric signal, institute
Stating display device includes the backlight module, display panel and cover sheet set gradually from the bottom to top, and the backlight module includes:
Light guide plate, the side including the top and bottom being oppositely arranged and between the bottom surface and the top surface；First light
Source, the first luminescence unit of the side including multiple neighbouring light guide plates, the multiple first luminescence unit be connected with each other or
There is interval, the multiple first luminescence unit is used for the side-emitted between the first at least partly adjacent luminescence unit
Backlight beam, the backlight beam enter inside light guide plate from the side, and are emitted to from the top surface of the light guide plate described
Display panel provides visible light beam for realizing that image is shown for the display panel；Second light source is located at first light
Below source, the second light source is used for towards the top of cover sheet transmitting detection light beam, and the detection light beam can penetrate
Interval and the cover sheet between the multiple first luminescence unit itself and/or the multiple first luminescence unit are arrived
Up to external object, biological characteristic of the detection light beam for external object is detected, and the wavelength of the detection light beam is different from institute
State the wavelength of backlight beam.
In some embodiments, the display area that the detection mould group at least partly corresponds to the display device is arranged described
Below backlight module；Alternatively, the detection mould group is at least partially disposed inside the display device, it is located in the display device
Portion includes: that the detection mould group is at least partially disposed at the backlight module side, and/or the detection mould group is at least partially disposed at
The display panel side, and/or the detection mould group are at least partially disposed at the cover sheet side, and/or the detection
Mould group is at least partially disposed at below the cover sheet, and/or the detection mould group be at least partially disposed at the cover sheet with
Between display panel, and/or the detection mould group is at least partially disposed between the display panel and backlight module.
In some embodiments, the multiple first luminescence unit of the second light source at least face itself, and/or, it is adjacent
The first luminescence unit between interval region setting.
In some embodiments, when at least partly interval of the multiple first luminescence unit is arranged, adjacent first shines
Interval between unit is at least 1 millimeter.
In some embodiments, the backlight module further comprises reflector plate, is located at the light guide plate and first light source
Lower section, the backlight beam being emitted from the bottom surface of the light guide plate can be reflected back into inside the light guide plate by the reflector plate；
First light source described in the second light source face is located at below the reflector plate, and the detection light beam can penetrate the reflection
Interval, the display panel and the cover sheet between piece, the multiple first luminescence unit reach external object, institute
The biological characteristic that detection light beam is stated for external object detects, wherein the wavelength of the detection light beam is different from the backlight light
The wavelength of beam.
In some embodiments, the second light source has the light-emitting surface in face of the reflector plate, and the detection light beam is from institute
State light-emitting surface outgoing.
In some embodiments, the reflector plate has the aperture of second light source described in face, and the detection light beam passes through institute
It states aperture outgoing or the reflector plate is transmissive to the detection light beam.
In some embodiments, the backlight module further includes the shell below the reflector plate, the shell receiving
The reflector plate, the light guide plate and the first light source, the second light source are located at the lower section of the shell, the shell energy
Enough penetrate the detection light beam；Or, the shell has opening, opening described in the second light source face is arranged in the shell
Lower section, or, the second light source is at least partially disposed in the opening, the detection light beam of the second light source transmitting can be from institute
Opening is stated through the shell and reaches the reflector plate.
In some embodiments, the backlight module further includes the center below the shell, and the second light source is solid
It is scheduled on the center；Alternatively, the second light source is fixed with the outer shell phase；Or, the second light source and the reflector plate
It is mutually fixed.
In some embodiments, the second light source is located above the center；Alternatively, the center has corresponding described the
The opening or groove of two light sources, at least part of the second light source are located in the opening or groove.
In some embodiments, the backlight module further includes the center below the shell, and the second light source is logical
Cross one or more of buckle, bolt, bonding, welding mode and the center, and/or the reflector plate, and/or described outer
Shell is fixedly connected or is detachably connected.
In some embodiments, the second light source includes the second luminescence unit and is electrically connected with second luminescence unit
Second circuit board, the second circuit board is located at below second luminescence unit, and the second circuit board is for being described
Second luminescence unit provides driving signal, and the backlight module further includes the center that portion is located at below the shell, and described second
Luminescence unit and second circuit board are located above the center；Alternatively, the center have corresponding second luminescence unit and
At least part of the opening or groove of second circuit board, second luminescence unit or second circuit board be located at it is described opening or
In groove.
In some embodiments, shown device has display area for displaying images and is located at the display area week
The non-display area enclosed, the first light source are located at the non-display area of the display device, and the second light source is located at described
The non-display area of display device.
In some embodiments, the backlight module further includes the shading glue being arranged in above the first light source, the screening
Optical cement can obstruct visible light, and: the shading glue is transmissive to the detection light beam, opens alternatively, the shading glue has
Hole, the detection light beam penetrate the shading glue from the aperture, and the shading glue is transmissive to or obstructs the detection light beam.
In some embodiments, the first light source further includes the first electricity being electrically connected with the multiple first luminescence unit
Road plate, the first circuit board are used to provide driving signal for the multiple first luminescence unit, and the multiple first is luminous single
Member is close to the first circuit board and is arranged below the first circuit board, and the detection light beam can penetrate first circuit
Plate.
In some embodiments, the multiple first luminescence unit is adjacent to the side of the light guide plate, the first circuit board
The side of the neighbouring light guide plate, alternatively, the light guide plate further includes the transition face for connecting the side and top surface, described first
Circuit board is at least partially disposed on the transition face of the light guide plate, the transition face include horizontal plane, and/or slope and/
Or cambered surface, thickness of the light guide plate at top surface are less than or equal to thickness of the light guide plate at transition face.
In some embodiments, the second light source includes multiple second luminescence units, between the multiple second luminescence unit
It forms a line every ground, is arranged at intervals on the reflector plate between the first adjacent luminescence unit of the second luminescence unit face
Lower section, second luminescence unit are used to emit the detection light beam towards the cover sheet.
In some embodiments, the multiple first luminescence unit of second luminescence unit at least face is arranged in a row
Middle position setting.
In some embodiments, second luminescence unit is electrically connected external drive circuit, the conduction by conducting medium
Medium includes conducting resinl or conducting wire；Alternatively, the second light source further includes second circuit board, the second circuit board is located at described
Below second luminescence unit, the second circuit board is used to provide driving signal for second luminescence unit.
In some embodiments, the backlight module further includes being arranged on the first circuit board back to described first to shine
The shading glue of the side of unit, the shading glue can obstruct visible light, and: the shading glue is transmissive to the detection light
Beam, alternatively, the shading glue has aperture, the detection light beam penetrates the shading glue, the shading glue energy from the aperture
Enough transmit or obstruct the detection light beam.
In some embodiments, first luminescence unit includes the first light-emitting surface with the light guide plate face, the back
The angle of the normal of light light beam and the first light-emitting surface is not more than 60 degree；Second luminescence unit includes the top with the light guide plate
The angle of the normal of the second parallel light-emitting surface of face, the detection light beam and the second light-emitting surface is not more than 60 degree.
In some embodiments, the display panel includes the second base that first substrate and the first substrate are oppositely arranged
Plate and the liquid crystal layer between the first substrate and the second substrate, relatively described second base of the first substrate
The part that the edge of plate extends protrusion is terminal region, and the terminal region is located at the non-display area of the display device, described the
Terminal region described in one light source face is located at below the terminal region, and first light source described in the second light source face is located at described anti-
It penetrates below piece, the terminal region is transmissive to the detection light beam.
In some embodiments, the display panel further includes panel circuit plate, and one end of the panel circuit plate connects institute
The marginal portion of terminal region is simultaneously yearned for bending and is extended to below the backlight module, and the panel circuit plate, which has, supplies the detection
The aperture or the panel circuit plate that light beam passes through are transmissive to the detection light beam, and the detection light beam successively penetrates institute
State reflector plate, the first light source, the terminal region, the cover sheet are emitted in external object.
In some embodiments, the display panel further includes the integrated circuit being arranged on the terminal region, the detection
The part that light beam can not covered by the integrated circuit from the terminal region penetrates, and the detection light beam successively penetrates described anti-
Penetrate piece, the first light source, the terminal region, the panel circuit plate, the cover sheet are emitted in external object.
In some embodiments, the detection light beam includes near infrared light.
In some embodiments, the display device further includes the optical coating on the cover sheet lower surface, institute
The non-display area that optical coating corresponds to the display device is stated, the optical coating is transmissive to the detection light beam and interception
The backlight beam or other visible light beams.
In some embodiments, the backlight module further includes the optical diaphragm layer above the light guide plate, the light
The backlight beam that membrane layer is used to spread and/or blast is emitted from the top surface of light guide plate is learned, the optical diaphragm layer is transmissive to
The detection light beam.
In some embodiments, the cover sheet has the lower surface opposite with the display panel and back to described
The upper surface of display panel, the detection mould group the upper surface of the cover sheet have the first field of view, described first
At least part of field of view is located at the display area of the display device.
In some embodiments, the detection mould group has the second field of view, the inspection on the top surface of the light guide plate
Mould group is surveyed to receive to from second field of view transmitted through the detection light beam come；The backlight module further comprises light
Barrier film, the photoresist diaphragm are used for through backlight beam and intercept detection light beam, at least part position of the photoresist diaphragm
In the display area of the display device, alternatively, the photoresist diaphragm is located at the top surface of light guide plate except second visual field area
The top of the exterior domain in domain.
In some embodiments, the biology that the detection mould group is used to obtain external object according to the electric signal after conversion is special
Sign, and/or the image of external object is generated, and/or the space coordinate of detection external object.
In some embodiments, the biological characteristic include fingerprint, iris, face, palmmprint, pulse, heart rate, velocity of blood flow and
One of living body is a variety of.
One aspect of the present invention provides a kind of display device, including the display panel and backlight module being stacked, institute
State the backlight module that backlight module is detection system under above-mentioned screen.
In some embodiments, the display device further includes cover sheet, the display panel and the backlight module position
In the lower section of the cover sheet, the display panel includes the second base that first substrate and the first substrate are oppositely arranged
Plate and the liquid crystal layer between the first substrate and the second substrate, relatively described second base of the first substrate
The part that the edge of plate extends protrusion is terminal region, and the side of the terminal region back to the cover sheet is provided with antireflection
Film, the anti-reflective film are used for through detection light beam and the detection light beam are prevented to be reflected, and the cover sheet can be saturating
Penetrate the detection light beam.
One aspect of the present invention provides a kind of backlight module, and the backlight module is the back of detection system under above-mentioned screen
Optical mode group, or the backlight module for above-mentioned display device.
The beneficial effects of the present invention are detection system 1 includes second light source under screen of the invention, and the second light source is just
The first light source is located at below the first light source.The first light source normally shows that image provides for the display device
Backlight beam, the second light source provide the detection light beam for shielding lower detection for the detection mould group.The detection light beam can
Think black light, and the detection light beam can penetrate the display device.The detection light beam can be through described aobvious
Showing device is emitted and is received, and the normal picture for not influencing the display device is shown.Therefore detection system under the screen
It can preferably realize and be detected under the screen for external object, the biological characteristic under including but not limited to shielding detects, image generates,
Spatial position detection etc..In addition, the second light source can be set below the reflector plate or shell lower section.Institute
Stating second light source can also be connected with center.Have enough spaces for accommodating institute below the reflector plate and backlight module
Second light source is stated, the second light source realizes the setting of the light source of detection light beam using the existing space of the display device, no
With the space for additionally occupying the display device, there is preferable practicability and applicability.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of one embodiment of detection system under screen of the invention；
Fig. 2 is the partial sectional schematic view of detection system under Fig. 1 institute display screen；
Fig. 3 is the partial sectional schematic view of display device shown in Fig. 1；
Fig. 4 is the partial sectional schematic view of a change embodiment of detection system under screen of the invention；
Fig. 5 is the partial sectional schematic view of a change embodiment of detection system under screen of the invention；
Fig. 6 is the partial sectional schematic view of a change embodiment of detection system under screen of the invention；
Fig. 7 is the partial sectional schematic view of a change embodiment of detection system under screen of the invention；
Fig. 8 is the partial sectional schematic view of a change embodiment of detection system under screen of the 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.
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.
Further, described feature, structure can be incorporated in one or more embodiment party in any suitable manner
In formula.In the following description, many details are provided so as to fully understand presently filed embodiment.However, this
Field technical staff will be appreciated that even if without one or more in the specific detail, or using other structures, group
Member etc. can also practice the technical solution of the application.In other cases, it is not shown in detail or describes known features or operation
To avoid the emphasis of fuzzy the application.
Referring to Fig. 1, detection system 1 includes display under the screen under screen of the present invention in one embodiment of detection system 1
Device 10.The display device 10 has display area AA for displaying images and surrounds the non-display area of the display area
Domain NA.Changing ground, the display area AA and non-display area NA can also have other shapes or a positional relationship, such as but
It is not limited to, the back side, and/or front of the display device 10, and/or side all have display area AA and non-display area
NA；Or the non-display area NA does not surround the display area AA.The embodiment of the present invention is with no restriction.
Referring to Fig. 2, being the line B-B direction along Fig. 1 of detection system 1 under the screen according to one embodiment of present invention
Partial sectional schematic view.The display device 10 includes backlight module 11,12 and of display panel set gradually from the bottom to top
Cover sheet 13.The display panel 12 is for showing that image, the backlight module 11 are used to provide for the display panel 12
Image shows required backlight beam 100.The cover sheet 13 is for protecting the display panel 12.The cover sheet 13
It can be made of transparent material, such as, but not limited to: glass or sapphire.
In the present embodiment, the display device 10 further includes the optical coating on 13 lower surface of cover sheet
131, the non-display area of the corresponding display device 10 of the optical coating 131.The optical coating 131 is transmissive to described
It detects light beam 101 and intercepts the backlight beam 100 or other visible light beams.Optionally, the optical coating 131 is infrared oil
Ink, the detection light beam 101 are near infrared light, and the backlight beam 100 is visible light, and the infrared printing ink is close red for transmiting
Outer light simultaneously absorbs visible light.
Optionally, other or change embodiment in, the optical coating 131 can be omitted.
Optionally, other or change embodiment in, the optical coating 131 can integrate in the cover sheet 13.
The display device 10 further includes for accommodating at least part of backlight module 11 and display panel 12
Center 14.Detection system 1 further includes the detection mould group 19 being arranged in below the backlight module 11 under the screen.The detection mould
Group 19 can receive the detection light beam 101 that external object 1000 reflects through the display device 10, and/or, it is external right
As the detection light beam 101 of 1000 transmissions.Wherein, the transmission includes that external object 1000 will enter its internal detection light
Beam 101 transmits.The detection light beam 101 of the reflection of external object 1000 or transmission is believed with the biological characteristic of external object 1000
Breath.The detection mould group 19 receives the detection light beam 101 of the reflection of external object 1000 or transmission and is converted to electric signal, into
And the biological characteristic that can be used for such as, but not limited to external object 1000 detects and/or image generates and/or spatial position
Detection.
It should be noted that biological characteristic detection described herein includes but is not limited to the sense to external object 1000
The processes such as survey, information collection, characteristic comparison, recognition result verifying, the life described herein for external object 1000
The detection of object feature refers at least being implemented for or be used to help to realize biological characteristic detection.
It should be noted that display device 10 is treated as a whole, the viewing area that device 10 has is schematically shown in Fig. 1
Domain AA and non-display area NA may include space above or below the region of its corresponding part.Such as, but not limited to, described
The non-display area NA of display device 10 indicates that the display device 10 is positive and is not used in inside the region and its that image is shown
Corresponding this is not used in the space in the region that image is shown.The display panel 11, cover sheet 13 etc. equally have and described aobvious
Show the substantially corresponding display area region AA and non-display area NA and non-display area, as shown in Figure 2.And the protection cap
By the superficies component as the display device 10, the upper surface of the cover sheet 13 can be regarded as described plate 13
The front of display device 10.Therefore, for convenience of description, it is likely to occur in present specification and claims about described aobvious
Show the description of display area/non-display area of panel 11, cover sheet 13 or other assemblies etc..The display panel 11 is shown
Show that region is the region of display area AA described in its face, the non-display area of the display panel 11 is its face non-display area
The region of domain NA, and so on, those skilled in the art are clearly understood that.
In the present embodiment, the center 14 has aperture, and the detection mould group 19 is at least partly arranged in the aperture.
In other or change embodiment, the center 14 can not aperture, the detection mould group 19 setting inside the center 14 or
Lower section.
The display panel 12 and cover sheet 13 have preferable transmitance to the detection light beam 101.It needs to illustrate
, the preferable transmitance is that the detection light beam 101 that the relatively described detection mould group 19 receives is used for external object 1000
Biological characteristic detection when optical imaging effect for.The transmitance of 12 pairs of display panel detection light beams 101 is for example
But it is not limited to about 50%, the transmitance of 13 pairs of cover sheet detection light beams 101 is such as, but not limited to greater than 90%.
Optionally, the backlight module 11, display panel 12, can have optical cement or optical film between cover sheet 13
(being not shown in Fig. 2).
Optionally, in some embodiments, such as, but not limited to, the detection mould group 19 is at least partially disposed at the display
Inside device 10, the inside of the display device 10 includes 11 side of backlight module, and/or the display panel 12 1
Side, and/or 13 side of the cover sheet, and/or the detection mould group 19 are at least partially disposed at 13 lower section of cover sheet,
And/or the detection mould group 19 is at least partially disposed between the cover sheet 13 and display panel 12 and/or the detection mould
Group 19 is at least partially disposed between the display panel 12 and backlight module 11.
In the present embodiment, the backlight beam 100 is the light beam of different wave length with the detection light beam 101, wherein described
Backlight beam 100 is visible light, for example, white light.The detection light beam 101 is black light, and the black light includes close red
Outer light.The detection light beam 101 is, for example, near infrared light.Illustratively, the visible light include wave-length coverage be 400~
The light beam of 700nm (nanometer).The near infrared light includes the light beam that wave-length coverage is 800~1000nm.The detection light beam 101
For example, wavelength be 850nm or 940nm light beam.The first light source 16 and/or second light source 17 can include but is not limited to
One of following light-emitting component is a variety of: LED (light emitting diode), VCSEL (vertical cavity
surface emitting laser)、LD(laser diode)、Mini-LED、Micro-LED、OLED(organic
Light-emitting diode), QLED (quantum dot light emitting diode) etc..
The backlight module 11 includes: reflector plate 112, light guide plate 113, optical diaphragm layer 114, first light source 16 and second
Light source 17.Wherein, the reflector plate 112, light guide plate 113, optical diaphragm layer 114 are stacked gradually according to direction from the bottom to top.Institute
Light guide plate 113 is stated to include the top surface (not labeled) that is oppositely arranged and bottom surface (not labeled) and be located at the bottom surface and the top
Side (not labeled) between face.
The first light source 16 is for emitting backlight beam 100, after the backlight beam 100 passes through the light guide plate 113
The display panel 12 is beamingly supplied in face.The display panel 12 is realized visible under the backlight beam 100 illumination
Image show.The second light source 17 is located at 16 lower section of the first light source, and the second light source 17 is used for through described the
It one light source 16 and/or is provided by light guide structure (not shown) to a detection space and detects light beam 101.The detection light
The wavelength of beam 101 is different from the backlight beam 100.The detection light beam 101 can be located at the outside in the detection space
The display device 10 is returned after the reflection of object 1000 or transmission.The detection mould group 19 can receive the detection light of the return
Beam 101 is simultaneously converted to electric signal.Optionally, the light guide structure can be light guide plate, light pipe, optical fiber, it is solid or have sky
The light guide structure etc. of chamber, the embodiment of the present invention is not construed as limiting this.The detection light beam 101 can lead to after second light source sending
It crosses the light guide structure and reaches 13 lower section of cover sheet, and then reach external object 1000 through the cover sheet 13.
At this point, the detection light beam 101 is not necessarily to penetrate the first light source 16 and the display panel 12, reduce the detection light beam
101 reach the transmission loss in external object 1000.
In the present embodiment, the height of the first light source 16 is greater than thickness of the light guide plate 113 at top surface.In order to mention
The utilization rate of the high backlight beam 100, (or the light guide plate 113 is in lateral position for the height of the side of the light guide plate 113
Thickness) it is greater than thickness of the light guide plate 113 at top surface.The profile height and the first light source 16 of the light guide plate 113
Height it is of substantially equal.There is transition face (not labeled), the transition face makes institute between the side and top surface of the light guide plate 113
The thickness for stating light guide plate 113 is gradually reduced.It is described since the thickness of the corresponding display area of the light guide plate 113 is smaller
10 entirety of display device can accomplish relatively thin.The transition face can be slope or arcwall face etc. or the transition bread
Include horizontal plane, and/or slope, and/or cambered surface.
It should be noted that the present embodiment is as exemplary description, and in other embodiments, the light guide plate 113, the first light
Source 16, second light source 17 can have other structures and setting, such as the top surface of the light guide plate 113 is connected and has with side
Consistent thickness.The embodiment of the present invention is not construed as limiting this.
The first light source 16 is adjacent to the side, positioned at the side of the light guide plate 113.The first light source 16 is used for
To the side-emitted backlight beam 100, the backlight beam 100 enters the inside of light guide plate 113 from the side, and from institute
The top surface for stating light guide plate 113 is emitted to the display panel 12.The backlight beam 100 is used to realize for the display panel 12
Image display provides visible light beam.
The reflector plate 112 is located at the lower section of the light guide plate 113 and first light source 16.From the bottom of the light guide plate 113
The backlight beam 100 of face outgoing returns to inside the light guide plate 113 after capable of being reflected by the reflector plate 112.
The lower section of the reflector plate 112 is arranged in first light source 16 described in 17 face of second light source.Second light
Source 17 has the light-emitting surface (not labeled) of reflector plate 112 described in face.The second light source 17 is used for towards the cover sheet 13
Top transmitting detection light beam 101.The detection light beam 101 can be through the reflector plate 112, first light source 16, described aobvious
Show that panel 12 and the cover sheet 13 reach external object 1000.External object 1000 reflects or transmits the detection light
Beam 101, the detection mould group 19 can receive the detection light of the reflection of external object 1000 or transmission through the display device 10
Beam 101 is simultaneously converted to corresponding electric signal, such as: the viewdata signal of the biological information including external object 1000.
Wherein, it includes that external object 1000 will enter its internal detection light beam 101 that external object 1000, which transmits the detection light beam 101,
It transmits.
Further, external object 1000 receives position and external object 1000 of the detection light beam 101 inside
The position for transmiting the detection light beam 101 is different.Certainly, in other embodiments, external object 1000 receives the detection light
The position that position and external object 1000 of the beam 101 inside transmit the detection light beam 101 can be identical.The present invention is implemented
Example is not construed as limiting.
In the present embodiment, the cover sheet 13 have the relatively described display panel 12 lower surface (not labeled) and back to
The upper surface (not labeled) of the display panel 12.The upper surface of the cover sheet 13 has exit area TA
(transmitting area) and incident area RA (receiving area).Defining the exit area TA is the detection
The region that light beam 101 is emitted from 13 upper surface of cover sheet, the incident area RA are the reflection of external object 1000 or saturating
The detection light beam 101 penetrated enters the region of the cover sheet 13 from 13 upper surface of cover sheet.From the incident area
The detection light beam 101 of RA incidence may be received by the detection mould group 19.
Optionally, in other or change embodiment, the exit area TA and incident area RA have the overlay region of part
Domain, the overlapping region area are such as, but not limited to be about no more than 30%, 20% etc. of the incident area RA area.
Optionally, in other or change embodiment, the incident area RA is the detection mould group 19 in the protection cap
Field of view on the upper surface of plate 13.The incident area RA is at least partially disposed at the display area of the display device 10
It is interior.
The biological characteristic that the detection light beam 101 can but be not limited to the use of external object detects, and/or image generates,
And/or space coordinate detection, sensing of distance etc..The wavelength of the detection light beam 101 is different from the wave of the backlight beam 100
It is long.
Optionally, the detection mould group 19 has the first field of view, the inspection in the upper surface of the cover sheet 13
It surveys after light beam 101 can penetrate first field of view and is received by the detection mould group 19.First field of view is extremely
Few a part is located at the display area of the display device 10.
The detection mould group 19 has the second field of view, the detection mould group 19 on the top surface of the light guide plate 113
Can receive from second field of view transmitted through come detection light beam.
Optionally, other or change embodiment in, the backlight module 11 further comprises photoresist diaphragm (not shown), institute
Photoresist diaphragm is stated for through backlight beam 100 and intercepting and detect light beam 101, at least part of the photoresist diaphragm to be located at institute
The display area of display device 10 is stated, alternatively, the photoresist diaphragm is located at the top surface of light guide plate 113 except second visual field area
The top of the exterior domain in domain.The barrier to light beam includes but is not limited to the absorption and/or reflection to light beam.
The reflector plate 112 is transmissive to the detection light beam 101 and the reflection backlight beam 100.Illustratively, institute
Stating reflector plate 112 can have the multilayer dielectricity membrane structure for having high reflectance or high-transmission rate for the light beam of specific wavelength.
Other or change embodiment, the reflector plate 112 can also have other structures or material.Such as, but not limited to,
The reflector plate 112 can have the aperture of second light source 17 described in face, and the detection light beam 101 passes through the reflector plate
112 aperture penetrates the reflector plate 112.This is not limited by the present invention.
The optical diaphragm layer 114 is used for the backlight beam 100 spread and/or blast is emitted from the top surface of light guide plate 113.
The optical diaphragm layer 114 is transmissive to the detection light beam 101.
It is that along the partial sectional schematic view of line C-C, specific location can refer to display device 10 in Fig. 1 please refer to Fig. 3
Line D-D in Fig. 2.The first light source 16 includes multiple first luminescence units 161 and first circuit board 162.The multiple first
Luminescence unit 161 is close to the first circuit board 162 and is arranged below the first circuit board 162.The first circuit board 162
For providing the required electric signal that shines for first luminescence unit 161.The electric signal include but is not limited to voltage signal,
Current signal etc..
It is spaced setting between the multiple first luminescence unit 161, and is located at the side of the light guide plate 113.It is described more
A first luminescence unit 161 is for backlight beam 100 described in the side-emitted to the light guide plate 113.It is adjacent in the present embodiment
Spacing distance between two the first luminescence units 161 is not less than 1 millimeter.Other are changed in embodiment, two neighboring first
Spacing distance between luminescence unit 161 can be different, such as, but not limited to: two neighboring first luminescence unit 161 it
Between spacing distance can for less than 1 millimeter or be greater than 1 millimeter.This is not limited by the present invention.
Optionally, in other or change embodiment, the multiple first luminescence unit 161 is connected with each other, and does not have
Interval.
Optionally, in other or change embodiment, between having between the first at least partly adjacent luminescence unit 161
Every, the interval be equidistant or it is unequal.
Between the detection light beam 101 can penetrate between the reflector plate 112, the multiple first luminescence unit 161
External object 1000 is reached every, the display panel 12 and the cover sheet 13.
Optionally, in other or change embodiment, the detection light beam 101 can penetrate first luminescence unit
161 in itself, and/or, the detection light beam 101 can be through the interval between the multiple first luminescence unit 161.
Optionally, in some embodiments, the first circuit board 162 includes conducting wire and flexible parent metal.Further
Optionally, the conducting wire and flexible parent metal are transmissive to the detection light beam 101, such as, but not limited to, the wire
Road and flexible parent metal are made of transparent material.Further alternative, the first circuit board 162 has the second light described in face
The aperture of the upper surface (i.e. the light-emitting surface of second light source 17) in source 17, the detection light beam 101 pass through described in aperture transmission
First circuit board 162.It is further alternative, in some embodiments, by Reasonable Arrangement conducting wire, so that the conductor wire
The relative position with the second light source 17 is avoided on road, and the flexible parent metal is transmissive to the detection light beam 101.
The second light source 17 includes multiple second luminescence units 171.Described in second luminescence unit 171 at least face
Interval region setting between multiple first luminescence units 161.Other are changed in embodiment, the opposite institute of the second light source 17
Stating the first luminescence unit 161 can have different settings, such as, but not limited to: the second light source 17 can be with described in face first
Luminescence unit 161 is arranged.This is not limited by the present invention.
Optionally, the detection light beam 101 that second luminescence unit 171 emits can penetrate first luminescence unit
Interval between 161 itself and/or first luminescence units 161.
In the present embodiment, the multiple first luminescence unit 161 is arranged along the direction for the side for being parallel to the light guide plate 113
(it is considered that side of the light-emitting surface of first luminescence unit 161 apart from the light guide plate 113 is equidistant) in a row.
Other are changed in embodiment, and the multiple first luminescence unit 161 can have other arrangements or structure, such as but unlimited
In: the multiple first luminescence unit 161 can line up two row or multi-row or multiple first luminescence units 161 and institute
The distance for stating light guide plate 113 is unequal.This is not limited by the present invention.
Optionally, the multiple first luminescence unit 161 of second luminescence unit 171 at least face is arranged in a row
Middle position setting.
Optionally, second luminescence unit 171 connects the first circuit board 162 by conducting medium, and described first
Circuit board 162 is used to provide the required electric signal that shines for second luminescence unit 171.The electric signal includes but is not limited to
Voltage signal, current signal.
Optionally, the second light source 17 further includes second circuit board (not shown).Second luminescence unit 171 is close to
The second circuit board is arranged above the second circuit board.The second circuit board is used to be second luminescence unit
171 provide the required electric signal that shines.The electric signal includes but is not limited to voltage signal, current signal.
Optionally, second luminescence unit 171 connects external circuit by conducting resinl and/or conducting wire.
Optionally, in some embodiments, first luminescence unit 161 includes the side of light guide plate 113 described in face
The first light-emitting surface (not labeled), the angle of the normal of the backlight beam 100 and the first light-emitting surface is not more than 60 degree.Described
Two luminescence units 171 include the second light-emitting surface (not labeled) parallel with the top surface of the light guide plate 113, the detection light beam
101 and second light-emitting surface normal angle be not more than 60 degree.Certainly, as needed, described in other or change embodiment
The normal angle of backlight beam 100 and the first light-emitting surface can be greater than 60 degree, the method for the detection light beam 101 and the second light-emitting surface
The angle of line can be greater than 60 degree.The embodiment of the present invention is not construed as limiting this.Optionally, at least partly described second luminescence unit
Between between multiple first luminescence units 161 of 171 the second light-emitting surface face and/or the first adjacent luminescence unit 161
Every setting.
The backlight module 11 further include the shading glue 116. that is arranged in the first light source 16 specifically, the shading
Glue 116 is arranged on the first circuit board 162, and the shading glue 116 can obstruct visible light, and: the shading glue 116
It is transmissive to the detection light beam 101, alternatively, the shading glue 116 has aperture, the detection light beam 101 is from the aperture
Through the shading glue 116, the shading glue 116 is transmissive to or obstructs the detection light beam 101.Illustratively, the screening
Optical cement 116 for example but is not limited to infrared printing ink material and is made, for intercepting visible light through near infrared light.
It should be noted that the first luminescence unit 161, the number of elements of the second luminescence unit 171 and position are in Fig. 3
Schematical to indicate, actual product, which can according to need, is arranged in different positions or with different quantity, the present invention is to this
It is not construed as limiting.
The display panel 12 includes the first substrate 121, liquid crystal layer 122 and the second base for stacking gradually setting from the bottom to top
Plate 123.The part that the edge of the relatively described the second substrate 123 of the first substrate 121 extends protrusion is terminal region 1211.It is described
Terminal region 1211 is located at the non-display area of the display device 10, terminal region 1211 and position described in 16 face of first light source
In 1211 lower section of terminal region.First light source 16 described in 17 face of second light source is located at the lower section of the reflector plate 112.
The terminal region 1211 is transmissive to the detection light beam 101.
The display panel 12 further includes panel circuit plate 124.One end of the panel circuit plate 124 connects institute terminal region
1211 marginal portion and outward bending extend to the lower section of the backlight module 11.Optionally, in some embodiments, described
Panel circuit plate 124 includes flexible circuit board and/or printed circuit board.
Optionally, the first substrate 121, the second substrate 123 can for glass substrate, plastic base, semiconductor substrate,
Metal substrate etc..The display panel 12 for example but is not limited to liquid crystal display panel.The display device 10 for example but not office
It is limited to liquid crystal display device.The first substrate 121 is also known as array substrate comprising multiple thin film transistor (TFT)s (TFT) are constituted
Thin film transistor (TFT) array and fine scanning line (gate line) and multiple columns of data lines (data line).The scan line
It can be connected to driving by the terminal region 1211 with data line or drive is further connected to by the panel circuit plate 124
Dynamic circuit.The second substrate 123 is also known as filter sheet base plate or color membrane substrates comprising multiple red arranged in array,
The optical filter of green and blue.
Optionally, in some embodiments, the panel circuit plate 124 includes flexible base board and conducting wire, the inspection
Surveying light beam can be through the flexible parent metal between the conducting wire of the panel circuit plate 124, thus through the panel circuit
Plate 124.
Optionally, in some embodiments, the panel circuit plate 124, which can be used, is transmissive to the detection light beam
101 material is made, and includes such as, but not limited to transparent membrane and transparent conductive medium, and the transparent membrane is, for example, PET film,
Transparent conductive medium is ITO electrode.
Optionally, in some embodiments, the coupling part of the panel circuit plate 124 and the terminal region 1211 can be with
With the first aperture, first aperture can be used for the detection light beam 101 and pass through.First the number of openings can be one
It is a or multiple.
Optionally, in some embodiments, the prolonging positioned at 11 lower section of backlight module of second luminescence unit 171
Second aperture of the extending portion point with the corresponding second light source 17.At least part of the second light source 17 is located at the panel
In second aperture of circuit board 124.The quantity of second aperture can be one or more, and the quantity of second aperture can
With corresponding with the quantity of the second luminescence unit 171 consistent.
Optionally, in some embodiments, the panel circuit plate 124 can extend and cover from the lower section of second light source 17
The lower surface of the second light source 17 is covered, the second light source 17 is considered as prolonging positioned at the panel circuit plate 124 at this time
The top of extending portion point, the extension of the panel circuit plate 124 is located at the lower section of the backlight module 11.
Optionally, in some embodiments, the panel circuit plate 124 is transmissive to the detection light beam 101, and described
The lower section of the extension of the panel circuit plate 124 is arranged in two light sources 17, and the second light source 17 is in the vertical direction
First light source 16 described in (the previous-next direction in Fig. 2) face.The extension of the panel circuit plate 124 is located at the backlight
The lower section of mould group 11.
The display panel 12 further includes the integrated circuit 125 being arranged on the terminal region 1211.The integrated circuit
125 is not be overlapped in the vertical direction with the panel circuit plate 124.The integrated circuit 125 is arranged in the panel circuit
Between plate 124 and the second substrate 123.The detection light beam 101 can be from the terminal region 1211 not by the integrated circuit 125
The part of covering penetrates, including but not limited to: the detection light beam 101 from the terminal region 1211 and with the terminal region 1211
The panel circuit plate 124 of connection penetrates and can be further transmitted through the cover sheet 13；Or the detection light beam 101 is from institute
It states the part that terminal region 1211 is not covered by the integrated circuit 125 and panel circuit plate 124 to penetrate, and can be further transmitted through
The cover sheet 13.
The integrated circuit 125 is arranged on the terminal region 1211 by COG (chip on glass) technique.It is optional
, the panel circuit plate 124 and terminal region 1211 pass through conductive glue connection, the integrated circuit 125 and the terminal region
1211 pass through conductive glue connection.The conducting resinl is such as, but not limited to, anisotropic conductive adhesive paste ACF.
Optionally, in some embodiments, the integrated circuit 125 can be set by COF (chip on film) technique
It sets in the panel circuit plate 124 along on extension.At this point, the collection is arranged due to not needing in the terminal region 1211
At circuit 125, therefore the terminal region 125 can have lesser width, thus the display device 10 can have it is relatively narrow
Non-display area, such as viewed from front, the display device 10 has relatively narrow frame.
In the present embodiment, the detection light beam 101 can successively penetrate the reflector plate 112, the first light source 16, institute
State terminal region 1211, the cover sheet 13 is emitted in external object.Specifically, the detection light beam 101 can successively thoroughly
Cross interval, first circuit board 162, shading glue 116, terminal region 1211 between the reflector plate 112, the first luminescence unit 161
It is emitted in external object 1000 with cover sheet 13.
Optionally, other or change embodiment in, the terminal region 1121 back to the cover sheet 13 side be arranged
There is anti-reflective film (not shown), the anti-reflective film is used for through detection light beam 101 and the detection light beam 101 is prevented to carry out instead
It penetrates, the cover sheet 13 is transmissive to the detection light beam 101.
Optionally, in other or change embodiment, the detection light beam 101 can successively penetrate the reflector plate 112, the
One light source 16, shading glue 116, terminal region 1211, panel circuit plate 124 and cover sheet 13 are emitted in external object 1000.
Optionally, other or change embodiment in, the shading glue 116 can be omitted.At this point, the detection light beam
101 are successively emitted through the reflector plate 112, first light source 16, terminal region 1211, panel circuit plate 124 and cover sheet 13
Onto external object 1000.
Backlight beam 100 described herein includes visible light, and such as, but not limited to wave-length coverage is that 400~700nm (receives
Rice) light beam.The detection light beam 101 includes black light, and the black light includes near infrared light, such as, but not limited to wave
Long range is the light beam of 800~1000nm.Certainly, other or change embodiment in, the backlight beam 100 and/or detection light
Beam 101 also can have different wavelength range, and such as, but not limited to, the detection light beam 101 may include visible light.
The backlight module 11 further includes the shell 111 positioned at 112 lower section of reflector plate, 111 collecting post of shell
State reflector plate 112, light guide plate 113, first light source 16 and optical diaphragm layer 114.The shell 111 may include being located at bottom surface
Iron-clad (not labeled) and glue frame (not labeled) positioned at side.
The shell 111 has the first aperture of second light source 17 described in face, and the second light source 17 is at least partly set
It sets in first aperture.The shell 111 has the second aperture that mould group 19 is detected described in face, the detection mould group 19
The detection light beam of external object reflection or transmission is received through second aperture.
Optionally, the shell 111 may include metal material and/or plastics.
Optionally, the shell 111 can be used the material for being transmissive to detect light beam 101 and be made.At this point, the shell
111 are transmissive to the detection light beam 101 without aperture.
Optionally, the detection mould group 19 can by one of buckle, bolt, bonding, welding or various ways and
The shell 111 is fixedly connected or is detachably connected.
Optionally, the detection mould group 19 can by one of buckle, bolt, bonding, welding or various ways and
The center 14 is fixedly connected or is detachably connected.
Optionally, the second light source 17 can by one of buckle, bolt, bonding, welding or various ways and
The shell 111, and/or the center 14, and/or the panel circuit plate 124, and/or the reflector plate 112 are fixedly connected
Or it is detachably connected.
Optionally, the center 14 is made using the material for being transmissive to the detection light beam 101, the detection mould group 19
The detection light beam 101 can be received through the center 14, the center 14 does not need to detect 19 aperture of mould group described in face,
The detection mould group 19 is arranged in below the center 14 and is at least partially situated in the display area of the display device 10.
Optionally, the center 14 has the groove or recess of the corresponding detection mould group 19, and the detection mould group 19 is right
The groove or recess is answered to be arranged above the center 14.
Optionally, the iron-clad of the shell 111 and/or glue frame can be omitted.At this point, the center 14 is set up directly on
112 lower section of reflector plate.
Optionally, the center 14 can be omitted.At this point, the detection mould group 19 can be by buckle, bolt, viscous
It one of connects, weld or various ways are fixedly connected or are detachably connected with the shell 111.
Optionally, referring to Fig. 4, under the screen in a change embodiment of detection system 1, for convenience of description, Fig. 4 institute
Show that the element numbers of embodiment and embodiment illustrated in fig. 2 are consistent, the structure and embodiment illustrated in fig. 2 of embodiment illustrated in fig. 4
It is essentially identical.Difference is that the center 14 has the groove of second light source 17 described in face, the second light source 17 at least portion
Quartile is in the groove of the center 14.
Optionally, referring to Fig. 5, under the screen in a change embodiment of detection system 1, for convenience of description, Fig. 5 institute
Show that the element numbers of embodiment and embodiment illustrated in fig. 2 are consistent, the structure and embodiment illustrated in fig. 2 of embodiment illustrated in fig. 5
It is essentially identical.Difference is that the center 14 has the opening of second light source 17 described in face, the second light source 17 at least portion
Quartile is in the opening of the center 14.
The detection mould group 19 receives the detection light beam 101 and can be converted to corresponding electric signal.The electric signal
Such as, but not limited to viewdata signal, described image data-signal include the biological information of external object 1000.Institute
Stating electric signal can be used for the biological characteristic detection or image generation of external object 1000.In addition, external object 1000 reflection or
The detection light beam 101 of transmission can be also used for the spatial coordinated information of detection external object 1000, outer so as to obtain
The information such as position, the speed of portion's object 1000.
In some embodiments, the detection mould group 19 or display device 10 can also include processor and memory (figure
Do not show), the processor can obtain the two dimension of external object 1000 according to the received detection light beam 101 of detection mould group 19
Information and/or depth information.
Further, biological information data are also stored in advance in the memory, 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 external object two-dimentional and/or three-dimensional biological characteristic detection and identification, such as, but not limited to: two dimension and/or three-dimensional
Fingerprint detection, face detection, iris detection, subcutaneous capillary detection etc..
In embodiment of the present invention or change embodiment, the detection light 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, modulation arteries and veins
It rushes one or more in signal.
The detection mould group 19 receives the detection light beam 101 of the transmitting of external object 1000 or reflection and obtains external object
1000 biological information or image information, so be able to detect external object 1000 biological information, and/or externally
Portion's object 1000 carries out Image Rendering, and/or detects the space coordinate of external object 1000.Such as, but not limited to: fingerprint detection,
Temperature check, heart rate detection, In vivo detection etc..
In above-described embodiment or other embodiments, external object 1000 receive and transmit it is described detection light beam 101 region/
Position can be different or identical.
In the above embodiments or change embodiment, external object 1000 can be finger, 1 energy of detection system under the screen
Fingerprint detection and identification under enough being shielded.But the present invention does not limit to external object 1000, other some changes are real
It applies in example, external object 1000 can also be face, palm, iris, blood vessel etc., and detection system 1 can be also used under the screen
Detect the face feature of external object 1000, iris feature, palmmprint, heart rate, body temperature etc..
It is detected and is identified by the biological characteristic to external object 1000, detection system 1 can be used for filling under the screen
That sets locks or unlocks, and on-line payment business verifying, the passage of the authentication of financial system or public security system, access control system is tested
Multiple products and the application scenarios such as card.
By carrying out two dimension or three-dimensional Image Rendering to external object 1000, detection system 1 can also be applied under the screen
In the application scenarios such as take pictures, image, model.
It is detected by the space coordinate to external object 1000, detection system 1 applies also for being related under the screen
The application scenarios of direction, distance, speed etc..
Under the screen detection system 1 can be used in external object 1000 two dimension and/or three-dimensional biological characteristic detection and
Identification, perhaps for the two dimension of external object 1000 and/or three-dimensional Image Rendering or for the two dimension of external object 1000
And/or three-dimensional space coordinate detection.
Detection system 1 can be mobile phone under the screen, tablet computer, smartwatch, augmented reality/virtual reality device,
Human action detection device, autonomous driving vehicle, smart home device, security device, intelligent robot or its component.
Compared to the prior art, detection system 1 includes second light source 17 under screen of the invention, and the second light source 17 is located at
First light source 16 described in face is located at 16 lower section of first light source.The first light source 16 is that the display device 10 is normally aobvious
Diagram picture provides backlight beam 100, and the second light source 17 is that the detection mould group 19 provides the detection light for shielding lower detection
Beam 101.The detection light beam 101 can be black light, and the detection light beam 101 can penetrate the display device
10, the normal picture that the transmitting and reception for detecting light beam 101 at this time do not influence the display device 10 is shown, therefore under the screen
Detection system 1 can be realized preferably to be detected under the screen for external object 1000, the biological characteristic under including but not limited to shielding
Detection, image generate, spatial position is detected etc..In addition, the second light source 17 can be set below the reflector plate 112,
Or 111 lower section of shell.The second light source 17 can also be connected with center 14.The reflector plate 112 and backlight mould
There is 11 lower section of group enough spaces to utilize the display device 10 for accommodating the second light source 17, the second light source 17
The setting of the light source of detection light beam 101 is realized in existing space, without additionally occupying the space of the display device 10, have compared with
Good practicability and applicability.
Referring to Fig. 6, shielding lower detection system 2 in one embodiment of the present of invention and including display device 20 and be arranged in institute
State the detection mould group 29 of 20 lower section of display device.The detection mould group 29 can be through at least partly aobvious of the display device 20
Show that region receives the detection light beam 201 of external object reflection or transmission.In the present embodiment, the detection light beam 201 is for example but not
It is limited near infrared light.Other are changed in embodiment, and the detection light beam 201 includes visible light and/or black light.
The display device 20 includes backlight module 21, the display panel 22 above the backlight module 21, is located at
The cover sheet 23 of 22 top of display panel.The display device 20 has the display area that can show image and is located at
Non-display area around the display area.The display panel 22 is for showing image, and the backlight module 21 is for being
The display panel 21 provides image and shows required backlight beam.The cover sheet 23 is for protecting the display panel
22。
The backlight module 21 includes reflector plate 212, the light guide plate 213 above reflector plate 212, is located at light guide plate
The optical diaphragm layer 214 of 213 tops, positioned at 213 side of light guide plate first light source 26, be located at the lower section of reflector plate 212 and
The second light source 27 of first light source 26 described in face.The first light source 26 is for emitting backlight beam 200, the backlight beam
200 are provided to the display panel 22 to realize that image is shown.The second light source 27 is for emitting detection light beam 201, institute
State biological characteristic detection and/or image generation and/or spatial position detection of the detection light beam 201 for external object 1000.
The detection light beam 201 can reach external object 1000 through the backlight module 21, display panel 22, cover sheet 23.
The light guide plate 213 includes the bottom surface and top surface that are oppositely arranged, and between the bottom surface and top surface and with
The side of 26 face of first light source.The first light source 26 is used for the backlight beam 200 to the side-emitted visible light.
The backlight beam 200 is emitted after entering light guide plate 213 from the side from the top surface of the light guide plate 213.The light guide plate
213 for the backlight beam 200 entered from the side to be oriented to the optical diaphragm layer 214 of top.
The reflector plate 212 is used to the backlight beam 200 being emitted from 213 bottom surface of light guide plate being reflected back the leaded light
Plate 213.
The optical diaphragm layer 214 is used to spread and/or backlight beam 200 of the blast from the light guide plate 213 is laggard
One step is supplied to the display panel 22.
The first light source 26 includes the first luminescence unit 261 and first circuit board 262, first luminescence unit 261
It is close to the first circuit board 262 to be arranged below the first circuit board 262.
The backlight module 21 further includes the shading glue 216 that 262 top of first circuit board is arranged in.The shading glue
The 216 covering first circuit boards 262.Optionally, in some embodiments, the shading glue 216 can be described in covering part
Light guide plate 213 and/or optical diaphragm layer 214.The shading glue 216 can prevent backlight beam 200 and other visible lights from penetrating.
In the present embodiment, the shading glue 216 is transmissive to the detection light beam 201.Optionally, in some embodiments, the screening
Optical cement 216 is made including being transmissive to the material of the detection light beam 201 and the barrier backlight beam 2000, such as but unlimited
In the detection light beam 201 is infrared light or near infrared light, and the backlight beam 200 is visible light, and the shading glue 216 is
Infrared printing ink.Optionally, in some embodiments, the shading glue 216 has the aperture penetrated for the detection light beam 201.
Therefore, the shading glue 216 can obstruct the backlight beam and the transmission detection light beam, or: the shading glue 216 has
There is the aperture penetrated for the detection light beam 201, the shading glue 216 transmits or obstruct the detection light beam 201.
The second light source 27 is used to emit detection light beam 201 to the top of the cover sheet 23.The detection light beam
201 can reach outside through the reflector plate 212, the first light source 26, the display panel 22 and the cover sheet 23
Portion's object 1000.External object 1000 can contact the cover sheet 23, or apart from 23 certain distance of cover sheet.
In the present embodiment, the display device 20 further includes the optical coating that the lower surface of the cover sheet 23 is arranged in
231, the non-display area of the corresponding display device 20 of the optical coating 231.The optical coating 231 is transmissive to described
It detects light beam 201 and intercepts the backlight beam 200 or other visible light beams.The detection light beam 201 can be through described anti-
It penetrates piece 212, the first light source 26, the display panel 22, the optical coating 231 and the cover sheet 23 and reaches outside
Object 1000.Optionally, the optical coating 231 is infrared printing ink, and the detection light beam 201 is near infrared light, the backlight
Light beam 200 is visible light, and the infrared printing ink is for transmiting near infrared light and absorbing visible light.
Optionally, other or change embodiment in, the optical coating 231 can be omitted.
Optionally, other or change embodiment in, the optical coating 231 can integrate in the cover sheet 13.
The display panel 22 includes lower polarizing film 224, the first substrate 221, liquid crystal layer stacked gradually from the bottom to top
222, the second substrate 223, upper polarizer 225.The first substrate 221 is also known as array substrate, and the second substrate 223 is also known as
For color membrane substrates.There is the first substrate 221 one side edge along the second substrate 223 to extend outwardly the terminal region of protrusion
2211.The terminal region 2211 is located at the non-display area of the display device 20.The second substrate 223, liquid crystal layer 222,
Upper polarizer 225, lower polarizing film 224 correspond to the display area setting of the display device 40 substantially.
The lower polarizing film 224, upper polarizer 225 have different polarization direction, and the backlight beam 200 enters institute
The backlight beam 200 for stating particular polarization after lower polarizing film 224 is allowed to be emitted.The backlight beam of the particular polarization
200 by the liquid crystal layer 222 when, return and deflect as the liquid crystal molecule of the liquid crystal layer 222 deflects, so as to from
The upper polarizer 225 is emitted.
The display panel 22 further includes panel circuit plate 224, and the part of the panel circuit plate 224 connects the terminal
Simultaneously outward bending extends to 21 lower section of backlight module for the marginal portion in area 2211.The panel circuit plate 224 includes flexibility
Circuit board.Optionally, in some embodiments, the panel circuit plate 224 includes flexible circuit board and/or printed circuit board.
Optionally, in some embodiments, the extension of the panel circuit plate 224 corresponds to the second light source 27 and opens
Hole.The extension of the panel circuit plate 224 is located at the lower section of the backlight module 21.At least the one of the second light source 27
Part is located in the aperture of the extension of the panel circuit plate 224, and the setting of first light source 26 described in face is described anti-
Penetrate 212 lower section of piece.
Optionally, in some embodiments, the panel circuit plate 224 can extend and cover from the lower section of second light source 27
Cover the lower surface of the second light source 27.The second light source 27 is considered as prolonging positioned at the panel circuit plate 224 at this time
The top of extending portion point.The extension of the panel circuit plate 224 is located at the lower section of the backlight module 21.
Optionally, in some embodiments, the panel circuit plate 224 is transmissive to the detection light beam 201.Described
The lower section of the extension positioned at the backlight module 21 of the panel circuit plate 224, and described is arranged in two light sources 27
Two light sources 27 first light source 26 described in (the previous-next direction in Fig. 6) face in the vertical direction.
Optionally, in some embodiments, the part that the panel circuit plate 224 is connect with the terminal region 2212 has
The part energy that the aperture or the panel circuit plate 224 penetrated for the detection light beam 201 is connect with the terminal region 2212
Enough transmit the detection light beam 201.
The display panel 22 further includes integrated circuit 225, and the integrated circuit 225 is arranged in the terminal region 2211
On, and it is not be overlapped with the panel circuit plate 224.In the present embodiment, the integrated circuit 225 passes through COG (chip on
Glass) technique is arranged on the terminal region 2211.Optionally, the panel electricity can also be arranged in the integrated circuit 225
On the bending extension of road plate 224, at this point, the integrated circuit 225 can be arranged by COF (chip on film) technique
On the bending extension of the panel circuit plate.The integrated circuit 225 can be display driver circuit and/or touch inspection
Slowdown monitoring circuit.
The detection light beam 201 can successively penetrate the reflector plate 212, the first light source 26, the shading glue
216, the terminal region 2211, the panel circuit plate 224, the cover sheet 23 reach external object 1000；Or it is described
Detection light beam 201 can successively penetrate the reflector plate 212, the first light source 26, the shading glue 216, the terminal region
2211, the cover sheet 23 reaches external object 1000.
The detection light beam 201 is issued from second light source 27 to be needed during reaching external object 1000 by back
Multiple and different film layers of optical mode group 21 and display panel 22.Such as, but not limited to, the detection light beam 201 is penetrating the terminal
Part detection light beam 201 may be reflected in the terminal region 2211 when area 2211.The detection light beam 201 is described in the transmission
Part detection light beam 201 may be reflected in the panel circuit plate 224 when panel circuit plate 224.The detection light beam 201
Part detection light beam 201 may be reflected in cover sheet 23 when through the cover sheet 23.The detection light beam 201
It is also possible to the display area into the display device 20, so as to by the lower polarizing film 224 and/or upper polarizer
It is reflected at 225.
The reflected beams of the detection light beam 201 formed under above various reflection conditions are properly termed as the anti-of detection light beam 201
Blackberry lily disturbs light beam.It may all be received by the display panel 22 and/or backlight module 21 by the detection mould group 29.
Therefore, the reflection interference light beam of the detection light beam 201 part when through the terminal region 2211 in order to prevent
Detection light beam 201 is received after the reflection of the terminal region 2211 by the detection mould group 29, and the backlight module 21 can be into one
Step includes photoresist diaphragm 218.The photoresist diaphragm 218 is located at the lower section of the display panel 22.Specifically, the photoresist diaphragm
218 parts are located at 216 top of shading glue, are partially located at 214 top of optical diaphragm layer.The photoresist diaphragm 218 is used
In the detection light beam 201 for absorbing the reflection interference light.
It should be noted that detection light beam 201 described in the present embodiment can be in the different location of the terminal region 2211
Through including but not limited to: the detection light beam 201 can terminal region between integrated circuit 225 and the second substrate 223
2211 penetrate or the detection light beam 201 can be saturating from the junction of the panel circuit plate 224 and the terminal region 2211
It crosses.
Other are changed in embodiment, and the detection light beam 201 can also be by setting so that it penetrates institute terminal region
2211 specific position or region.Such as, but not limited to, the part of the close display area of the shading glue 216 is transmissive to institute
Detection light beam 201 is stated, and the part far from display area cannot transmit the detection light beam 201.At this point, the detection light beam
201 parts for being merely able to the display area of the neighbouring display device 20 through the shading glue 216 project and saturating upwards
It crosses the terminal region 2211 and is emitted to the cover sheet 23 adjacent to the part of display area, and be further transmitted through the protection cap
Plate 23.Alternatively, 2211 lower surface of terminal region coats optical coating, so that the detection light beam 201 penetrates the terminal region
2211 specific position or region.The embodiment of the present invention is not construed as limiting this.
Optionally, referring to Fig. 7, being the partial sectional schematic view of a change embodiment of detection system 2 under the screen,
For convenience of description, the element numbers of embodiment shown in Fig. 7 and Fig. 6 are consistent.Embodiment illustrated in fig. 7 and institute shown in Fig. 6
The structure and function for stating detection system 2 under shielding is essentially identical, and difference is, the detection mould group 29 is in the light guide plate 213
Top surface has corresponding second field of view, the region setting other than corresponding second field of view of the photoresist diaphragm 218
In the top of the light guide plate 213.Specifically, the photoresist diaphragm 218 is arranged above the optical diaphragm layer 214, and position
In the lower section of the display panel 22.The photoresist diaphragm 218 can partially positioned at the display device 20 display area and
Part is located at the non-display area.Optionally, the photoresist diaphragm 218 can be entirely located in the display of the display device 20
Region.
Optionally, referring to Fig. 8, being the partial sectional schematic view of a change embodiment of detection system 2 under the screen,
For convenience of description, the element numbers of embodiment shown in Fig. 8 and Fig. 6 are consistent.Embodiment illustrated in fig. 8 and institute shown in Fig. 6
The structure and function for stating detection system 2 under shielding is essentially identical, and difference is, the display panel 22 further comprises positioned at described
The anti-reflective film 228 of 2211 lower section of terminal region.The non-display area of the corresponding display device 20 of the anti-reflective film 228 is set
It sets.The anti-reflective film 228 is anti-for reducing or preventing the detection light beam 201 to occur when through the terminal region 2211
It penetrates, to be further reduced the reflection interference light of the detection light beam 201.
Anti-reflective film 228 and/or photoresist diaphragm 218 in Fig. 6~embodiment illustrated in fig. 8 can be applied of the present invention
Embodiment in and change embodiment in, the position and setting of the anti-reflective film 228 and/or photoresist diaphragm 218 can be different,
Such as, but not limited to, the anti-reflective film 228 can also be at least partially situated in display area, the photoresist diaphragm 218
It may belong to the display panel 22.The embodiment of the present invention is not construed as limiting this.
The structures such as shell 111, center 14 of embodiment and component also can be applied to shown in Fig. 6~Fig. 8 in Fig. 2~Fig. 5
Embodiment and of the invention other or change embodiment.The embodiment of the present invention is not construed as limiting this.
Compared to the prior art, detection system 2 includes second light source 27,27 face of second light source under screen of the invention
The first light source 26 is located at 26 lower section of first light source.The first light source 26 is the display device 20 normally display figure
As providing backlight beam 200, the second light source 27 is that the detection mould group 29 provides the detection light beam for shielding lower detection
201.The detection light beam 201 can be black light, and the detection light beam 201 can penetrate the display device 20,
The normal picture that the transmitting and reception for detecting light beam 201 at this time do not influence the display device 10 is shown.Therefore it is examined under the screen
Examining system 1 can be realized preferably to be detected under the screen for external object 1000, the biological characteristic inspection under including but not limited to shielding
Survey, image generate, spatial position is detected etc..The second light source 27 realizes detection using the existing space of the display device 20
The setting of the light source of light beam 201, without additionally occupying the space of the display device 20, there is preferable practicability and being applicable in
Property.In addition, the photoresist diaphragm 218, the anti-reflective film 228 that shield lower detection system 2 can further strengthen 29 pairs of mould group detections of detection
The reception of light beam 201 and collection effect, so that it is preferable to shield lower detection effect.
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.
It should be noted that the light-emitting surface that may relate to, side, top surface, upper surface, lower surface etc. in the application description
It can be surface existing for entity, be also possible to imaginary surface, be not necessarily required to physical presence, all should be regarded as belonging to the application
Innovation and creation range.
Detection system and its backlight mould under the screen of different situations are described in the above embodiments of the present application with change embodiment
The structures such as group and display panel.Make while it will be understood by those skilled in the art that shielding lower biological characteristic detection to realize
Display device has higher screen accounting, the second light source for being used to emit detection light beam can be arranged below first light source, or
Using existing space inside display device, so that display device can be realized preferable biological characteristic detection effect under shielding, simultaneously
With higher screen accounting and visual effect.The embodiment of the present invention or change embodiment are split, are combined, deformation, scaling,
The changes setting such as limited times test, belongs to the scope of the present invention.
It should be noted that about light source in the above embodiment of the present invention or change embodiment and corresponding change setting
(16,26), backlight module (11,21), display panel (12,22), terminal region (1211,2211), shading glue (116,216), light
Structure, function, principle and the setting of barrier film 218, anti-reflective film 228 etc. can also be applied in other implementations disclosed by the invention
In example, thus obtains embodiment and its replacement, deformation, combination, fractionation, extension etc. and belong to the scope of the present invention.
Ground is changed, in embodiments described above, the second light source may also be arranged on reflector plate and first light
Between source.In addition, the detection light beam can also be by light-guide device from display after through the interval between the first luminescence unit
The side of panel bypasses and is pierced by turn through cover board, that is, there are a kind of embodiments, detect light beam in the process for being pierced by cover board
In without penetrate display panel.
Further, in the above-described embodiments, the second light source is mainly the interval passed through between the first luminescence unit
Transmission detection light beam so changes ground, and the second light source for example can also wait transmission detection light by first luminescence unit itself
Beam, in this way, and it is possible, the protection scope of the application should all be fallen in.
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.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the application.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
" length " that is likely to occur in description of the invention, " width ", "upper", "lower", "left", "right", "front", "rear",
The orientation or positional relationship of the instructions such as " back side ", " front ", "vertical", "horizontal", " top ", " bottom ", " inside ", " outside "
To be based on the orientation or positional relationship shown in the drawings, being merely for convenience of the description embodiment of the present invention and simplifying description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.Similar label and letter indicate similar terms in the accompanying drawings, therefore, once a certain Xiang Yi
It is defined in attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it being retouched in of the invention
In stating, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.At this
In the description of invention, " a variety of " or the meaning of " plurality " is at least two or two, unless otherwise specifically defined.This hair
In bright description, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " installation ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be mechanical connection,
It can be electrical connection；It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be inside two elements
Connection.For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
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 (20)
1. detection system under a kind of screen, which is characterized in that including display device and detection mould group, the detection mould group can be penetrated
The display device at least partly receives from external object transmission or/and the detection light beam reflected and converts the inspection received
Survey light beam is corresponding electric signal, and the display device includes the backlight module, display panel and guarantor set gradually from the bottom to top
Protecting cover plate, the backlight module include:
Light guide plate, the side including the top and bottom being oppositely arranged and between the bottom surface and the top surface；
First light source, the first luminescence unit of the side including multiple neighbouring light guide plates, the multiple first luminescence unit
Be connected with each other or the first at least partly adjacent luminescence unit between there is interval, the multiple first luminescence unit is used for institute
Side-emitted backlight beam is stated, the backlight beam enters inside light guide plate from the side, and from the top surface of the light guide plate
It is emitted to the display panel, provides visible light beam for realizing that image is shown for the display panel；
Second light source is located at below the first light source, and the second light source is used for the top towards the cover sheet and emits
Light beam is detected, the detection light beam can shine single through the multiple first luminescence unit itself and/or the multiple first
Interval and the cover sheet between member reach external object, and biological characteristic of the detection light beam for external object is examined
It surveys, the wavelength of the detection light beam is different from the wavelength of the backlight beam.
2. as described in claim 1 shield lower detection system, which is characterized in that shown described in the detection mould group at least partly face
The display area of showing device is arranged below the backlight module；Alternatively, the detection mould group is at least partially disposed at the display
Inside device.
3. as claimed in claim 2 shield lower detection system, which is characterized in that the detection mould group is at least partially disposed at described aobvious
It include: that the detection mould group is at least partially disposed at the backlight module side, and/or the detection mould group at least inside showing device
Part be located at the display panel side, and/or the detection mould group be at least partially disposed at the cover sheet side, and/or
The detection mould group is at least partially disposed at below the cover sheet, and/or the detection mould group is at least partially disposed at the guarantor
Between protecting cover plate and display panel, and/or the detection mould group is at least partially disposed between the display panel and backlight module.
4. as described in claim 1 shield lower detection system, which is characterized in that the second light source at least face the multiple the
Interval region setting between one luminescence unit itself and/or the first adjacent luminescence unit.
5. as claimed in claim 4 shield lower detection system, which is characterized in that the multiple first luminescence unit is at least partly
When the setting of interval, the interval between the first adjacent luminescence unit is at least 1 millimeter.
6. as described in claim 1 shield lower detection system, which is characterized in that the backlight module further comprises reflector plate,
It is located at below the light guide plate and first light source, and the backlight beam being emitted from the bottom surface of the light guide plate can be by the reflection
Piece reflects back into inside the light guide plate；First light source described in the second light source face is located at below the reflector plate, described
Detecting light beam can be through the interval between the reflector plate, the multiple first luminescence unit, the display panel and described
Cover sheet reaches external object, and biological characteristic of the detection light beam for external object detects, wherein the detection light beam
Wavelength be different from the backlight beam wavelength.
7. as claimed in claim 6 shield lower detection system, which is characterized in that the second light source, which has, faces the reflector plate
Light-emitting surface, the detection light beam is emitted from the light-emitting surface.
8. as claimed in claim 6 shield lower detection system, which is characterized in that the reflector plate has second light source described in face
Aperture, the detection light beam pass through the aperture be emitted or the reflector plate be transmissive to the detection light beam.
9. as claimed in claim 6 shield lower detection system, which is characterized in that the backlight module further includes being located at the reflection
Shell below piece, the shell accommodate the reflector plate, the light guide plate and the first light source, the second light source and are located at
The lower section of the shell, the shell can penetrate the detection light beam；Or, the shell has opening, the second light source
Opening described in face is arranged below the shell, or, the second light source is at least partially disposed in the opening, described second
The detection light beam of light source transmitting through the shell and can reach the reflector plate from the opening.
10. as described in claim 1 shield lower detection system, which is characterized in that shown device has for displaying images
Display area and the non-display area around the display area, the first light source are located at the non-aobvious of the display device
Show region, the second light source is located at the non-display area of the display device.
11. as described in claim 1 shield lower detection system, which is characterized in that the backlight module further includes being arranged described
Shading glue above first light source, the shading glue can obstruct visible light, and: the shading glue is transmissive to the detection
Light beam, alternatively, the shading glue has aperture, the detection light beam penetrates the shading glue, the shading glue from the aperture
It is transmissive to or obstructs the detection light beam.
12. as described in claim 1 shield lower detection system, which is characterized in that the first light source further include with it is the multiple
The first circuit board that first luminescence unit is electrically connected, the first circuit board for the multiple first luminescence unit for providing
Driving signal, the multiple first luminescence unit is close to the first circuit board and is arranged below the first circuit board, described
Detection light beam can penetrate the first circuit board.
13. as claimed in claim 12 shield lower detection system, which is characterized in that the multiple first luminescence unit is neighbouring described
The side of light guide plate, the first circuit board is adjacent to the side of the light guide plate, alternatively, the light guide plate further includes described in connection
The transition face of side and top surface, the first circuit board are at least partially disposed on the transition face of the light guide plate, the transition
Face includes horizontal plane, and/or slope, and/or cambered surface, and thickness of the light guide plate at top surface is less than or equal to the leaded light
Thickness of the plate at transition face.
14. as claimed in claim 6 shield lower detection system, which is characterized in that the second light source includes multiple second luminous
Unit, being arranged at intervals below the reflector plate between the first adjacent luminescence unit of the second luminescence unit face, institute
The second luminescence unit is stated for emitting the detection light beam towards the cover sheet.
15. as claimed in claim 14 shield lower detection system, which is characterized in that first luminescence unit includes leading with described
The angle of the normal of first light-emitting surface of tabula rasa face, the backlight beam and the first light-emitting surface is not more than 60 degree；Described second
Luminescence unit includes second light-emitting surface parallel with the top surface of the light guide plate, the normal of the detection light beam and the second light-emitting surface
Angle be not more than 60 degree.
16. as described in claim 1 shield lower detection system, which is characterized in that the display panel includes first substrate and institute
The second substrate that first substrate is oppositely arranged and the liquid crystal layer between the first substrate and the second substrate are stated,
The part that the edge of the relatively described the second substrate of the first substrate extends protrusion is terminal region, and the terminal region is located at described aobvious
The non-display area of showing device, terminal region described in the first light source face are located at below the terminal region, the second light source
Below the first light source, the terminal region is transmissive to the detection light beam.
17. as claimed in claim 16 shield lower detection system, which is characterized in that the display panel further includes panel circuit
Plate, one end of the panel circuit plate connect the marginal portion of institute terminal region and bend downward and extend under the backlight module
Side, it is described that there is the panel circuit plate aperture for supplying the detection light beam to pass through or the panel circuit plate to be transmissive to
Light beam is detected, the detection light beam is emitted to external object through the first light source, the terminal region, the cover sheet
On.
18. detection system under the screen as described in any one of claim 1~17, which is characterized in that the detection light beam packet
Include near infrared light.
19. as claimed in claim 18 shield lower detection system, which is characterized in that the cover sheet has and the display surface
The opposite lower surface of plate and back to the upper surface of the display panel, upper table of the detection mould group in the cover sheet
Face has the first field of view, and at least part of first field of view is located at the display area of the display device；Institute
State detection mould group has the second field of view on the top surface of the light guide plate, and the detection mould group is to from second visual field area
Domain is received transmitted through the detection light beam come；The backlight module further comprises photoresist diaphragm, and the photoresist diaphragm is used for
Through backlight beam and the detection light beam that the terminal region reflexes on the backlight module is intercepted, the photoresist diaphragm is at least
A part is located at the display area of the display device, alternatively, the photoresist diaphragm is located at the top surface of light guide plate except described the
The top of the exterior domain of two field of view.
20. as described in claim 1 shield lower detection system, which is characterized in that after the detection mould group is used for according to conversion
Electric signal obtains the biological characteristic of external object, and/or generates the image of external object, and/or the space of detection external object
Coordinate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658132.6A CN110376780B (en) | 2019-07-20 | 2019-07-20 | Under-screen detection system, liquid crystal display device and backlight module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658132.6A CN110376780B (en) | 2019-07-20 | 2019-07-20 | Under-screen detection system, liquid crystal display device and backlight module |
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| CN110376780B CN110376780B (en) | 2024-04-02 |
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| CN111052139A (en) * | 2019-11-05 | 2020-04-21 | 深圳市汇顶科技股份有限公司 | Under-screen fingerprint identification device, LCD fingerprint identification system and electronic equipment |
| CN111062017A (en) * | 2019-11-04 | 2020-04-24 | Oppo广东移动通信有限公司 | Fingerprint module and terminal |
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