CN209707869U - Electronic equipment and back light unit - Google Patents
Electronic equipment and back light unit Download PDFInfo
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- CN209707869U CN209707869U CN201920071804.9U CN201920071804U CN209707869U CN 209707869 U CN209707869 U CN 209707869U CN 201920071804 U CN201920071804 U CN 201920071804U CN 209707869 U CN209707869 U CN 209707869U
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Abstract
The utility model discloses a kind of back light units, it includes the reflector plate, light guide plate and optical diaphragm set gradually, setting is close to a functional module group or is spaced to the reflector plate, the optical diaphragm has the aperture of the corresponding functional module group, and the aperture enables the functional module group to receive and/or emit light beam.The invention also discloses a kind of electronic equipment.The front of the utility model electronic equipment has more regions for showing there is preferable user experience.
Description
Technical field
The utility model relates to electronic technology field more particularly to the electronic equipments and backlight list of a kind of better user experience
Member.
Background technique
As technological progress and people's living standard improve, for the electronic equipments such as mobile phone, tablet computer, camera, user
Require more multi-functional and fashion appeal.Currently, the development trend of electronic equipment is frivolous, close screen comprehensively, have simultaneously
The functions such as front camera self-timer and recognition of face.And as the function that electronic equipment is supported is more and more abundant, it needs to be arranged
Number of elements is also more and more, needs to occupy the position of the positive display area of a part of electronic equipment, influences beautiful and user
Experience.
Utility model content
The purpose of the utility model is to provide a kind of electronic equipment and back light unit with preferable user experience.
The one aspect of the utility model discloses a kind of back light unit, including set gradually reflector plate, light guide plate and
Setting is close to a functional module group or is spaced to optical diaphragm, the reflector plate, and the optical diaphragm has the corresponding function mould
The aperture of group, the aperture enable the functional module group to receive and/or emit light beam.
Optionally, the reflector plate is not less than 80% to infrared light transmittance.
Optionally, the reflector plate is to visible reflectance to infrared transmission.
Optionally, the functional module group can be transmitted a light beam in external object by the aperture and be received at least partly
The two-dimensional signal or/and depth information of external object are obtained from the reflected light beam of external object.
Optionally, the aperture inner wall is equipped with light shield layer, and the light shield layer can obstruct beam propagation, and the light shield layer is logical
Plated film is crossed, is applied, spraying method is formed on the inside of the aperture, or the light shield layer is passed through stickup or clamping mode
Side in the opening is set.
Optionally, the optical diaphragm includes one or more diffusion sheets, perhaps one or more prismatic lens or diffusion
The combination of piece and prismatic lens.
Optionally, the light guide plate includes the light-emitting surface of the neighbouring optical diaphragm, and the light-emitting surface has multiple sites,
Density of the site in the compensatory zone of the correspondence functional module group is greater than the density near compensatory zone.
Optionally, the light beam is visible light, black light, ultraviolet light, infrared light, electromagnetic wave, sound wave, in ultrasonic wave
It is one or more of.
The one aspect of the utility model also discloses a kind of electronic equipment, including display module, the display module packet
Include above-mentioned back light unit.
It optionally, further include the functional module group that the display module back side is set, the functional module group can be by described
Display module receives and/or transmitting light beam, and the display module further includes liquid crystal display panel, and the back light unit is arranged in institute
State below liquid crystal display panel, setting is close to the reflector plate or is spaced to the functional module group, the optical diaphragm with pair
Answer the aperture of the functional module group.
Optionally, the functional module group includes receiving unit and/or transmitting unit, and the transmitting unit includes infrared light hair
Emitter and/or visible light emitter, the receiving unit include infrared light and/or visible light sensor, the transmitting unit hair
Light beam out is reached outside the display module by the reflector plate, light guide plate, aperture and liquid crystal display panel, external beam
The receiving unit is reached by the liquid crystal display panel, aperture, the light guide plate, reflector plate.
Optionally, the functional module group can be realized according to the infrared beam received to the two dimension of the external object or three
Image Rendering is tieed up, or/and realizes the identification to the external object, or/and realizes the distance perception to the external object
It surveys, or/and realizes and the external object is taken pictures or recorded a video.
Compared to the prior art, the front of the utility model electronic equipment has more regions for showing, this is practical
Novel backlight unit can be used in above-mentioned electronic equipment, make it have preferable user experience.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the utility model；
Fig. 2 is the schematic diagram of one embodiment of the utility model；
Fig. 3 is the schematic diagram of one embodiment of the utility model；
Fig. 4 is the schematic diagram of one embodiment of the utility model；
Fig. 5 is the schematic diagram of one embodiment of the utility model；
Fig. 6 is the schematic diagram of one embodiment of the utility model；
Fig. 7 is the schematic diagram of one embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Feature described in present specification, structure can be incorporated in one or more implementations in any suitable manner
In mode.In the following description, many details are provided so as to fully understand presently filed embodiment.However,
One of ordinary skill in the art would recognize that even if without one or more in the specific detail, or the other structures of use,
Constituent element etc. can also practice the technical solution of the application.In other cases, it is not shown in detail or describes known features or behaviour
Make the emphasis to avoid fuzzy the application.
A kind of back light unit is provided in one embodiment of the utility model, including reflector plate, the light guide plate set gradually
And setting is close to a functional module group or is spaced to optical diaphragm, the reflector plate, the optical diaphragm has the corresponding function
The aperture of mould group, the aperture enable the functional module group to receive and/or emit light beam.The functional module group can pass through
The aperture is transmitted a light beam in external object and is received at least partly outer to obtain from the reflected light beam of external object
The two-dimensional signal or depth information of portion's object.
A kind of electronic equipment is provided in one embodiment of the utility model comprising display module and setting are described aobvious
Show that the functional module group at the mould group back side, the functional module group can receive by the display mould and/or emit light beam, the display mould
Group includes liquid crystal display panel and the back light unit being arranged in below liquid crystal display panel, and the back light unit has and the function
It can the corresponding aperture of mould group.
Referring to Fig. 1, a kind of electronic equipment includes display module 10 and function mould in one embodiment of the utility model
Group 20.The functional module group 20 is arranged at 10 back side of display module, is close to or is spaced setting with the display module 10.Institute
Light beam can be received by the display module 10 and/or emit by stating functional module group 20.Generally, the display module 10 is for user
The side of browsing and operation is referred to as front, and opposite side is known as the back side.
In the present embodiment, the functional module group 20 can pass through the display module 10 and receive external beam 102, the light beam
102 be visible light.The functional module group 20 can be used for two dimension or the identification of three dimensional object feature, or two dimension or 3-D image are drawn
System, or take pictures and image.
In the utility model other or change embodiment, the light beam 102 is visible light, and black light, ultraviolet light is infrared
Light, electromagnetic wave, sound wave, one or more of ultrasonic wave.The display module 10 can be LCD (Liquid Crystal
Display) display module.The functional module group 20 can also be transmitted a light beam in external object by the display module 10.
Such as, but not limited to, the functional module group 20 can be transmitted a light beam in external object by the display module 10 and be received extremely
Small part obtains the two-dimensional signal or depth information of external object from the reflected light beam of external object.
Referring to Fig. 2, the display module 10 includes liquid crystal display panel 11 and is arranged in liquid crystal display in the present embodiment
The back light unit 12 of 11 lower section of panel.The back light unit 12 includes reflector plate 121, light guide plate 122 and the optics set gradually
Diaphragm 123, the back light unit 12 further include the backlight (not shown) for being located at 122 side of light guide plate.The optical film
Piece 123 has the aperture 101 of the corresponding functional module group 20.Light beam 102 passes through after can passing through the liquid crystal display panel 11
The aperture 101, the light guide plate 122, the reflector plate 121 reach the functional module group 20.The functional module group 20 and institute
It states reflector plate 121 and is close to or is spaced setting.
The functional module group 20 can be transmitted a light beam to by the aperture 101 in external object and receive at least partly from
The reflected light beam of external object to obtain external object two-dimensional signal or depth information (such as fingerprint feature information,
Facial feature information, iris feature information etc.), to realize the biological characteristic detection and identification of external object, such as but unlimited
In fingerprint recognition, face recognition, iris recognition etc..
In the other embodiments of the utility model, the functional module group 20 includes sensor and/or is arranged in the sensing
Lens above device.The optical diaphragm 123 has the aperture 101 of the corresponding lens or sensor, and external beam 102 passes through
The lens are incident on by the aperture 101, light guide plate 122, reflector plate 121 after liquid crystal display panel 11, then further
Reach the sensor.In the utility model other embodiments, the functional module group further includes accommodating the lens and sensor
Cylinder.
The utility model other or change embodiment in, the optical diaphragm 123 may include one or more diffusion sheets
(diffuser film), perhaps one or more prismatic lens (brightness enhancement film) or diffusion sheet
With the combination of prismatic lens, the relative position of the diffusion sheet and prismatic lens can have different settings, such as diffusion sheet setting exists
Above prismatic lens or prismatic lens are arranged above diffusion sheet.
In the utility model other or change embodiment, the area of the aperture 101 is less than the face of the functional module group 20
Product.
The utility model other or change embodiment in, the aperture 101 is perpendicular to 11 side of liquid crystal display panel
Upward projected area is less than the functional module group 20 perpendicular to the projected area on 11 direction of liquid crystal display panel.
Referring to Fig. 3, in a change embodiment of the utility model electronic equipment 1, shown optical diaphragm 123 include according to
The secondary diffusion sheet 1231 being arranged on shown light guide plate 122, lower prismatic lens 1232 and upper prismatic lens 1233.
The back light unit 12 further includes light source (not shown).The optical diaphragm 123 has the corresponding functional module group
20 aperture 101, the aperture 101 run through the diffusion sheet 1231, lower prismatic lens 1232 and upper prismatic lens 1233.External beam
102 are incident on the functional module group by the aperture 101, light guide plate 122, reflector plate 121 after liquid crystal display panel 11
20.The light beam that the functional module group 20 issues passes through the reflector plate 121, the light guide plate 122, the aperture 101 and described
Liquid crystal display panel 11 reaches outside display module 10, and can by after external object (such as: finger, face etc.) reflection again according to
It is secondary that the functional module group 20 is reached by liquid crystal display panel 11, the aperture 101, light guide plate 122, reflector plate 121, thus real
Now it is such as, but not limited to fingerprint recognition, the functions such as recognition of face or the identification of other biological feature.Another change of the utility model
In embodiment, lower prismatic lens 1232 and upper prismatic lens 1233 in above-described embodiment can be substituted with a piece of prismatic lens.
Ground is changed, in some embodiments, the aperture 101 can also be for non-fully through the optical diaphragm 123.
For example, there is nonpenerative hole to be all possible for 101 through part optical diaphragms of the aperture or partial optical diaphragm.
In the utility model embodiment, the reflector plate 121 can have visible light close to fully reflective to infrared light
Preferable transmitance is not less than 80% to infrared light transmittance.Light beam 102 can be between wave-length coverage 800nm~1000nm
Infrared light.
In other or change embodiment of the utility model, the part of the corresponding aperture 101 of the light guide plate 122 is equipped with
Anti-reflection film (not shown), for increasing beam transmittance.Optionally, the anti-reflection film setting faces institute in the light guide plate 122
State a side surface of reflector plate 121.
In other embodiments of the utility model, the functional module group 20 is visible image capturing head (RGB camera).This reality
With it is novel other or change embodiment in, the functional module group 20 can also be black light functional module group, such as: infrared sensing
Device mould group.The functional module group 20 can be used for shooting photo or video, such as, but not limited to: self-timer, video, videophone, depending on
Frequency meeting, live streaming etc.；Or drawn for two dimension or 3-D image, such as, but not limited to: building structure is drawn, mapping,
Hologram image etc.；Or identified for characteristics of objects, such as, but not limited to: fingerprint recognition, face recognition, iris recognition etc..It needs
It is noted that the utility model is not limited thereto, any technical solution obtained without creative work, including but not
Deformation, replacement, change, the combination etc. for being limited to some or all of the utility model embodiment belong to the utility model protection model
It encloses.
In the present embodiment, the position that the functional module group 20 is arranged is corresponded among 10 bottom of display module.This is practical
In novel other embodiments, the functional module group 20 can also have different settings, such as correspond to the neighbour of the display module 10
It is arranged at proximal edges, or corresponding 10 center of the display module setting, or is set as needed in other positions.
In the utility model embodiment, the light beam 102 can be black light, infrared light, ultraviolet light, electromagnetic wave, surpass
One or more of sound wave.
In another embodiment of the utility model, the functional module group 20 can receive the light beam 102, and can be used for two dimension
Or three-dimensional characteristics of objects identification, perhaps two dimension or three-dimensional Image Rendering or for taking pictures or recorded video.Such as but not
Be limited to: fingerprint recognition, iris recognition, face recognition, self-timer, video, videophone, video conference, live streaming, building structure are drawn
System, mapping, hologram image etc..By carrying out to the electronic equipment 1, operation issues instruction to user or the electronics is set
Standby 1 starts Object identifying function according to pre-set programs, so that the functional module group 20 enters working condition.
Referring to Fig. 4, in a change embodiment of the utility model electronic equipment 1, the functional module group 20 can be with
Light beam 102 is issued, the light beam 102 passes sequentially through the reflector plate 121, shown light guide plate 122, shown aperture 101 and described
Liquid crystal display panel 11 reaches outside.
Referring to Fig. 5, the functional module group 20 can be sent out in a change embodiment of the utility model electronic equipment 1
Light beam 102 out, the light beam 102 pass sequentially through the reflector plate 121, shown light guide plate 122, shown aperture 101 and the liquid
LCD panel 11 reaches outside, the light beam 102 emit on external object (such as: finger, face etc.) after successively
The functional module group 20 is reached by the liquid crystal display panel 11, the aperture 101, light guide plate 122, reflector plate 121.
Referring to Fig. 6, a kind of electronic equipment includes display module 10 and function in a change embodiment of the utility model
Energy mould group 20, the functional module group 20 is arranged in 10 back side of display module or lower section.The functional module group 20 can pass through
The transmitting of display module 10 and/or reception light beam.
The display module 10 includes liquid crystal display panel 11 and the back light unit that 11 back side of liquid crystal display panel is arranged in
12, the back light unit 12 includes reflector plate 121, light guide plate 122 and the optical diaphragm 123 set gradually.The functional module group
20 are close to the reflector plate 121 or are spaced setting.The back light unit 12 further includes that 122 side of light guide plate is arranged in
Light source (not shown).The optical diaphragm 123 has the aperture 101 of the corresponding functional module group 20.
Please refer to Fig. 7, the light guide plate 122 includes the bottom surface (not indicating) of the neighbouring reflector plate 121 and neighbouring
The light-emitting surface 1221 of the optical diaphragm 123, the light-emitting surface 1221 have site 1222, and the site 1222 can be used in
The optical diaphragm 123 enters the quantity in the light beam of the optical diaphragm 123 with increase in 1222 corresponding region of site.
One or more of the generally circular groove in the site 1222, square groove, diamond groove, conical socket, spherical groove；
Or the site 1222 be by punching press or etching etc. it will be appreciated by those skilled in the art that technique be formed in the leaded light
On the light-emitting surface 1221 of plate 122.The site 1222 can be used in so that the light source (not shown) from back light unit 12 emits
Light beam in the corresponding region of the site 1222 on 122 thickness direction of light guide plate enter the optical diaphragm 123 light
Beam quantity increases.In other words, the site 1222 can allow light beam to enter the optical diaphragm 123 of top faster.The leaded light
The light-emitting surface 1221 of plate 122 has compensatory zone 1223 (as shown in circle of dotted line in Fig. 7), the site in the compensatory zone 1223
1222 density is greater than the density of the site near compensatory zone 1223.The site 1222 of the compensatory zone 1223 can be used in
The beam brightness that the back light unit at the aperture 101 provides is compensated, to compensate the liquid crystal display panel 11 in aperture 101
The display brightness at place, so that 11 display effect of the liquid crystal display panel is preferable.In the present embodiment, the compensatory zone 1223 with
The functional module 20 is corresponding, and the area of the compensatory zone 1223 is not less than the functional module group 20 in the light guide plate
Projected area on 122.It should be noted that the utility model is not limited thereto, such as in some changes of the utility model
In more embodiment, the site 1222 can also also be made into strip groove, the sunk structure of V-type groove or other shapes, in a word institute
The light beam from the light guide plate 122 into the optical diaphragm 123 can be restrained or assemble to be any by stating site 1222
Sunk structure.
The functional module group 20 can emit light beam and by the reflector plate 121, light guide plate 122, aperture 101, liquid crystal
Display panel 11 reaches outside the display module 10, and passes sequentially through the liquid crystal display after being reflected by external object 100
Panel 11, aperture 101, light guide plate 122, reflector plate 121 reach the display module 20.At the same time, from external light source
Light beam can also reach the display module by the liquid crystal display panel 11, aperture 101, light guide plate 122, reflector plate 121
20.Such as, but not limited to, external object 100 can be finger, face, human body, iris etc..The functional module group 20 transmitting and/
Or received light beam may include infrared light and/or visible light.
In some embodiments, the bottom surface of the light guide plate 122 may also comprise site 1222.Further, optionally,
The dot density of 101 position of face aperture on the bottom surface is greater than the dot density in remaining region on bottom surface.
In the change embodiment of the utility model, the functional module group 20 can be used for two dimension and/or three-dimensional characteristics of objects
Identification, the functional module group 20 can pass through TOF (Time of Flight) or the modes such as structure light or binocular stereo imaging
Obtain object two-dimensional signal and/or and depth information.
The utility model other or change embodiment in, the back light unit 12 can further comprise light emitting diode
(LED) backlight drive circuit.The liquid crystal display panel 11 may include the two substrates being oppositely arranged, setting two substrate it
Between liquid crystal layer, the multiple thin film transistor (TFT)s being disposed on the substrate (Thin Film Transistor, TFT), multiple grid lines,
Multiple data lines, multiple pixel electrodes etc., and its multiple pixel units and the data-driven electricity in array distribution formed
Road, sequential control circuit, power circuit etc..
The utility model other or change embodiment in, the functional module group 20 can have multiple, the multiple function
Mould group 20 is all or part of to be arranged at 10 back side of display module.The shell 124 can have corresponding multiple function moulds
Multiple apertures 101 of group 20.
In the utility model other embodiments, 101 inner wall of aperture is equipped with light shield layer, and the light shield layer can obstruct light
Beam is propagated, and light beam can not pass through the light shield layer.Light shield layer is such as, but not limited to reflectance coating, absorbing film etc., and the light shield layer is
Light screening material passes through plated film, coating, and the modes such as spraying are formed on the inside of the aperture, or by the light shield layer by gluing
Side section in the opening is arranged in the modes such as patch or clamping.
In other embodiments of the utility model, the functional module group 20 includes lens and the sensing that side under a lens is arranged
Device, light beam 102 are incident on after liquid crystal display panel 11 by the aperture 101, light guide plate 122, reflector plate 121 described
Mirror, then further to the sensor.In the change or other embodiments of the utility model, the functional module group 20 includes
Lens, the sensor being arranged in below the lens and the cylinder for accommodating the lens and sensor.
In some embodiments of the utility model, the functional module group 20 may include visible image capturing head, can be used for receiving
Visible light simultaneously generates correspondence image.The utility model other or change embodiment in, the functional module group 20 can also be can not
Light-exposed functional module group, such as: infrared sensor mould group.The functional module group 20 can be used for shooting photo or video, such as but not
It is limited to: self-timer, video, videophone, video conference, live streaming etc.；Or it is drawn for two dimension or 3-D image, such as but unlimited
In: building structure is drawn, mapping, hologram image etc.；Or identified for characteristics of objects, such as, but not limited to: fingerprint is known
Not, face recognition, iris recognition etc..It should be noted that the utility model is not limited thereto, it is any without creative labor
Dynamic obtained technical solution, the including but not limited to deformation, replacement, change, group of some or all of the utility model embodiment
Conjunction etc. belongs to scope of protection of the utility model.
In the above-mentioned and other embodiment of the utility model, the liquid crystal display panel 11 at least corresponds to the aperture 101
Region allow light beam 102 penetrate.For example, controlling the liquid crystal by driving circuit in the functional module group 20 work
The pixel in the region of the corresponding aperture 101 of display panel 11 has specific gray scale voltage so that the light beam 102 have compared with
Big percent of pass (Transmittance Ratio), such as: the region of the corresponding aperture 101 of the liquid crystal display panel 11
The gray scale voltage of pixel makes the liquid crystal display panel 11 to the percent of pass of light beam 102 not less than 80%.The light beam 102 is
Visible light, black light, ultraviolet light, infrared light, electromagnetic wave, sound wave, one or more of ultrasonic wave.
In the above-mentioned or other embodiments of the utility model, the liquid crystal display panel 11 at least corresponds to the aperture 101
Region be it is transparent.
The utility model is above-mentioned or other embodiments in, the aperture 101 can be circle, rectangular, ellipse etc., this reality
With novel and be not particularly limited.
In another change embodiment of the utility model, the functional module group 20 includes receiving unit and/or transmitting unit,
Such as, but not limited to, the receiving unit may include infrared light transducer[sensor and/or visible light sensor.The transmitting unit can
To include infrared transmitter and/or visible light emitter.Further, the transmitting unit may include LED (Light
Emitting Diode), LD (Laser Diode), VCSEL (Vertical Cavity Surface Emitting Laser)
One of or it is a variety of.The receiving unit can also include that the visible light sensor is corresponding with/infrared light transducer[sensor
Mirror, lens barrel, fixed structure etc..The light beam that the transmitting unit issues passes through the reflector plate 121, light guide plate 122, aperture 101
It is reached outside the display module 10 with liquid crystal display panel 11.External beam passes through the liquid crystal display panel 11, aperture
101, the light guide plate 122 and reflector plate 121 reach the receiving unit.
In the utility model other or change embodiment, electronic equipment can be mobile phone, tablet computer, smartwatch, increase
Strong reality/virtual reality device, human action detection device, autonomous driving vehicle, smart home device, security device, intelligence
Robot or other electronic equipments with Object identifying or Image Rendering function.
The utility model other or change embodiment in, the electronic equipment can be used for living things feature recognition, such as face
Identification, iris recognition, fingerprint recognition etc..The utility model other or change embodiment in, the functional module group 20 is not limited to
The description of above-described embodiment, such as the functional module group 20 may include loudspeaker, microphone, distance detector, temperature detection
Device, height above sea level detector etc..
Compared to the prior art, the utility model electronic equipment has the function of that the display module back side is arranged at least partly
Mould group, electronic equipment front have more spaces for showing, so that the utility model electronic equipment has preferably
User experience.The utility model back light unit can be used in above-mentioned electronic equipment, make it have preferable user experience.
" length " that is likely to occur in the utility model specification, " width ", "upper", "lower", "front", "rear", " back side ",
The orientation or positional relationship of the instructions such as " front ", "vertical", "horizontal", " top ", " bottom ", " inside ", " outside " be based on
Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model embodiment and simplifies description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations 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 a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it is practical new at this
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.In the description of the present invention, " a variety of " or the meaning of " plurality " is at least two or two, unless otherwise clearly specific
Restriction.In the description of the utility model, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " peace
Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the utility model.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Term used in claims should not be construed as
Utility model is limited to specific embodiment disclosed in this specification.Therefore, the protection scope of the utility model should be with institute
It states subject to scope of protection of the claims.
Claims (10)
1. a kind of back light unit, which is characterized in that including the reflector plate, light guide plate and optical diaphragm set gradually, the reflection
Setting is close to a functional module group or is spaced to piece, and the optical diaphragm has the aperture of the corresponding functional module group, the aperture
The functional module group is enabled to receive and/or emit light beam.
2. back light unit according to claim 1, which is characterized in that the reflector plate to infrared light transmittance be not less than
80%.
3. back light unit according to claim 2, which is characterized in that the reflector plate is saturating to infrared light to visible reflectance
It penetrates.
4. back light unit according to claim 3, which is characterized in that the functional module group can be emitted by the aperture
On light beam to external object and receive the two dimension that external object is at least partly obtained from the reflected light beam of external object
Information or/and depth information.
5. back light unit according to claim 1, which is characterized in that the optical diaphragm includes one or more diffusions
Piece, the perhaps combination of one or more prismatic lens or diffusion sheet and prismatic lens.
6. back light unit according to claim 1, which is characterized in that the light guide plate includes the neighbouring optical diaphragm
Light-emitting surface, the light-emitting surface have multiple sites, and density of the site in the compensatory zone of the correspondence functional module group is big
In the density near compensatory zone.
7. a kind of electronic equipment, which is characterized in that including display module, the display module includes as appointed in claim 1-6
Back light unit described in one.
8. electronic equipment according to claim 7, which is characterized in that further include the function that the display module back side is arranged in
Energy mould group, the functional module group can receive by the display module and/or emit light beam, and the display module further includes liquid crystal
Display panel, the back light unit are arranged below the liquid crystal display panel, and the functional module group is close to the reflector plate
Or interval setting, the optical diaphragm have the aperture of the corresponding functional module group.
9. electronic equipment according to claim 8, which is characterized in that the functional module group includes that receiving unit and transmitting are single
Member, the transmitting unit include infrared transmitter, and the receiving unit includes infrared light transducer[sensor, and the transmitting unit issues
Infrared beam reached outside the display module by the reflector plate, light guide plate, aperture and liquid crystal display panel, by outside
The infrared beam that object reflection is returned reaches the reception by the liquid crystal display panel, aperture, the light guide plate, reflector plate
Unit.
10. electronic equipment according to claim 9, which is characterized in that the functional module group can be infrared according to receiving
Light beam, which is realized, draws the two dimension or 3-D image of the external object, or/and realizes the identification to the external object,
Or/and realization is taken pictures or is recorded a video to the external object to the distance sensing of the external object, or/and realization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920071804.9U CN209707869U (en) | 2019-01-16 | 2019-01-16 | Electronic equipment and back light unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920071804.9U CN209707869U (en) | 2019-01-16 | 2019-01-16 | Electronic equipment and back light unit |
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| Publication Number | Publication Date |
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| CN209707869U true CN209707869U (en) | 2019-11-29 |
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| CN201920071804.9U Active CN209707869U (en) | 2019-01-16 | 2019-01-16 | Electronic equipment and back light unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709714A (en) * | 2019-01-16 | 2019-05-03 | 柳州阜民科技有限公司 | Electronic equipment and back light unit |
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2019
- 2019-01-16 CN CN201920071804.9U patent/CN209707869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709714A (en) * | 2019-01-16 | 2019-05-03 | 柳州阜民科技有限公司 | Electronic equipment and back light unit |
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