CN209707727U - Light guide plate and back light unit - Google Patents
Light guide plate and back light unit Download PDFInfo
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- CN209707727U CN209707727U CN201920072362.XU CN201920072362U CN209707727U CN 209707727 U CN209707727 U CN 209707727U CN 201920072362 U CN201920072362 U CN 201920072362U CN 209707727 U CN209707727 U CN 209707727U
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- light
- guide plate
- light guide
- functional module
- aperture
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Abstract
The utility model discloses a kind of light guide plates for the back light unit with aperture, the light guide plate includes bottom surface and the light-emitting surface opposite with the bottom surface, the light-emitting surface is equipped with multiple sites, the site is greater than the dot density near compensatory zone in the density of the compensatory zone of the light-emitting surface, and the site in the compensatory zone can be used in compensating the backlight illumination of the back light unit tapping.The invention also discloses a kind of back light units.The utility model light guide plate and back light unit make have preferable user experience.
Description
Technical field
The utility model relates to electronic technology field more particularly to the light guide plates 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 light guide plate and back light unit with preferable user experience.
The one aspect of the utility model discloses a kind of light guide plate for the back light unit with aperture, the leaded light
Plate includes bottom surface and the light-emitting surface opposite with the bottom surface, and the light-emitting surface is equipped with multiple sites, the site it is described go out
The density of the compensatory zone of smooth surface is greater than the dot density near compensatory zone, and the site in the compensatory zone can be used in mending
Repay the backlight illumination of the back light unit tapping.
Optionally, the site is the sunk structure that can be restrained into the light beam of the optical diaphragm.
Optionally, the site is one of circular groove, square groove, diamond groove, conical socket, spherical groove
Or it is several；Either V-type groove or strip groove.
The one aspect of the utility model discloses a kind of back light unit, and the back light unit includes the reflection set gradually
Setting is close to the reflector plate or is spaced to piece, light guide plate and optical diaphragm, the functional module group, and the optical diaphragm has pair
The aperture of the functional module group is answered, the light guide plate includes the light-emitting surface of the neighbouring optical diaphragm, is had on the light-emitting surface
Multiple to restrain the site for entering the light beam of the optical diaphragm from the light guide plate, the light-emitting surface has and one can
Emit and/or receive the corresponding compensatory zone of functional module group of light beam, the net in the compensatory zone by the back light unit
The density of point is greater than compensatory zone dot density nearby.
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 reaches outside by the reflector plate, light guide plate, aperture and a liquid crystal display panel, and external beam passes through one
Liquid crystal display panel, aperture, the light guide plate, reflector plate reach the receiving unit.
Optionally, the optical diaphragm includes the diffusion sheet and prismatic lens set gradually, and the functional module group includes sensing
Device and/or the lens being arranged in above the sensor, the diffusion sheet and prismatic lens have the corresponding lens or sensor
Aperture, external beam is incident on the lens by the aperture, light guide plate and reflector plate, then further to the biography
Sensor.
Optionally, the site can be used in so that the light beam that emits of the light source from back light unit is in light guide plate side
The number of beams for entering the optical diaphragm in the corresponding region of the upward site increases.
Optionally, the functional module group includes visible image capturing head mould group or infrared pick-up head mould group or visible light hair
Mould group or infrared light emission mould group are penetrated, the functional module group is for two dimension or the identification of three dimensional object feature, or two dimension or three-dimensional
Image Rendering, or take pictures and image.
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, the reflector plate are not less than 80% to infrared light transmittance.
Compared to the prior art, the front of the utility model electronic equipment has more regions for showing, have compared with
Good 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.
One embodiment of the utility model provides a kind of light guide plate for the back light unit with aperture, described to lead
Tabula rasa includes reflecting surface and the light-emitting surface opposite with the reflecting surface, and the reflecting surface is equipped with multiple sites, and the site exists
The density of the compensatory zone of the reflecting surface is greater than the dot density near compensatory zone, and the site in the compensatory zone can
For compensating the backlight illumination of the back light unit tapping.
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.
One embodiment of the utility model provides a kind of back light unit, the back light unit include set gradually it is anti-
Piece, light guide plate and optical diaphragm are penetrated, setting is close to the reflector plate or is spaced to the functional module group, and the optical diaphragm has
The aperture of the corresponding functional module group, the light guide plate includes reflecting surface, and the reflecting surface is equipped with multiple sites, the reflection
Face has and can emit and/or receive the corresponding compensatory zone of the functional module group of light beam, institute by the back light unit with one
The density for stating the site in compensatory zone is greater than compensatory zone dot density nearby.
In the present embodiment, the functional module group includes receiving unit and/or transmitting unit, and the transmitting unit includes infrared
Optical transmitting set and/or visible light emitter, the receiving unit include infrared light and/or visible light sensor, and the transmitting is single
The light beam that member issues reaches outside by the reflector plate, light guide plate, aperture and a liquid crystal display panel, and external beam passes through
One liquid crystal display panel, aperture, the light guide plate, reflector plate reach the receiving unit.
The optical diaphragm includes the diffusion sheet and prismatic lens set gradually, the functional module group include sensor and/or
Lens above the sensor are set, the diffusion sheet and prismatic lens have the aperture of the corresponding lens or sensor,
External beam is incident on the lens by the aperture, light guide plate and reflector plate, then further to the sensor.
The utility model light guide plate and back light unit can be used in functional module group and be arranged below display panel, improve electricity
The usage experience of sub- equipment has preferable beneficial effect.
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, ultrasonic wave etc..The display module 10 can be LCD (Liquid Crystal Display) and show mould
Group.The functional module group 20 can also be transmitted a light beam in external object by the display module 10.
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 optical diaphragm 123 set gradually, the backlight
Unit 12 further includes the backlight (not shown) for being located at 122 side of light guide plate.The optical diaphragm 123 has described in correspondence
The aperture 101 of functional module group 20.Light beam 102 can be passed through after the liquid crystal display panel 11 through the aperture 101, described be led
Tabula rasa 122, the reflector plate 121 reach the functional module group 20.The functional module group 20 be close to the reflector plate 121 or
Every setting.
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.
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, for increasing beam transmittance.
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 multiple for reflecting or the site of deflecting light beams
1222, one of the generally circular groove in the site 1222, square groove, diamond groove, conical socket, spherical groove or
It is several；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 it is described
On the light-emitting surface 1221 of light guide plate 122.The site 1222 can be used in so that the light source (not shown) from back light unit 12
The light beam of transmitting enters the optical diaphragm 123 in the corresponding region of the site 1222 on 122 thickness direction of light guide plate
Number of beams increase.In other words, the site 1222 can allow light beam to enter the optical diaphragm 123 of top faster.It is described
The light-emitting surface 1221 of light guide plate 122 has compensatory zone 1223 (as shown in circle of dotted line in Fig. 7), in the compensatory zone 1223
The density of site 1222 is greater than the density of the site near compensatory zone 1223.The site 1222 of the compensatory zone 1223 can
The beam brightness provided for compensating the back light unit at the aperture 101, is being opened to compensate the liquid crystal display panel 11
Display brightness at hole 101, so that 11 display effect of the liquid crystal display panel is preferable.In the present embodiment, the compensatory zone
1223 is corresponding with the functional module 20, and the area of the compensatory zone 1223 is led not less than the functional module group 20 described
Projected area on tabula rasa 122.It should be noted that the utility model is not limited thereto, such as the one of the utility model
In a little change embodiments, the site 1222 can also also be made into strip groove, the sunk structure of V-type groove or other shapes, always
The site 1222 can for it is any can restrain or assemble from the light guide plate 122 enter the optical diaphragm 123 light
The sunk structure of beam.
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 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.
" 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 light guide plate, which is characterized in that the light guide plate is used for the back light unit with aperture, and the light guide plate includes bottom
Face and the light-emitting surface opposite with the bottom surface, the light-emitting surface are equipped with multiple sites, benefit of the site in the light-emitting surface
The density for repaying region is greater than dot density near compensatory zone, and the site in the compensatory zone can be used in compensating the back
The backlight illumination of light unit tapping.
2. light guide plate according to claim 1, which is characterized in that the site is that can restrain into an optical diaphragm
Light beam sunk structure.
3. light guide plate according to claim 2, which is characterized in that the site is that circular groove, square groove, diamond shape are recessed
One or more of slot, conical socket, spherical groove；Either V-type groove or strip groove.
4. a kind of back light unit, which is characterized in that the back light unit includes the reflector plate, light guide plate and optical film set gradually
Setting is close to the reflector plate or is spaced to piece, a functional module group, and the optical diaphragm has the corresponding functional module group
Aperture, the light guide plate include the light-emitting surface of the neighbouring optical diaphragm, have multiple can restrain from institute on the light-emitting surface
The site that light guide plate enters the light beam of the optical diaphragm is stated, the light-emitting surface has and one can pass through the back light unit
Emit and/or receive the corresponding compensatory zone of functional module group of light beam, the density of the site in the compensatory zone is greater than compensation
Areas adjacent dot density.
5. back light unit according to claim 4, which is characterized in that the functional module group includes receiving unit and/or hair
Unit is penetrated, the transmitting unit includes infrared transmitter and/or visible light emitter, and the receiving unit includes infrared light
And/or visible light sensor, the light beam that the transmitting unit issues pass through the reflector plate, light guide plate, aperture and a liquid crystal
Display panel reaches outside, and external beam passes through described in a liquid crystal display panel, aperture, the light guide plate, reflector plate arrival
Receiving unit.
6. back light unit according to claim 4, which is characterized in that the optical diaphragm includes the diffusion sheet set gradually
And prismatic lens, the functional module group include sensor and/or the lens that are arranged in above the sensor, the diffusion sheet and rib
Eyeglass has the aperture of the corresponding lens or sensor, and external beam is incident on by the aperture, light guide plate and reflector plate
The lens, then further to the sensor.
7. back light unit according to claim 4, which is characterized in that the site can be used in so that from back light unit
Light source transmitting the light beam site in the thickness direction of the light guide plate corresponding region in the entrance optical diaphragm light
Beam quantity increases.
8. back light unit according to claim 4, which is characterized in that the functional module group includes visible image capturing head mould
Group or infrared pick-up head mould group or VISIBLE LIGHT EMISSION mould group or infrared light emission mould group, the functional module group is for two dimension
Or the identification of three dimensional object feature, perhaps two dimension or 3-D image are drawn or take pictures and image.
9. back light unit according to claim 4, which is characterized in that the aperture inner wall is equipped with light shield layer, the shading
Layer is for obstructing beam propagation.
10. back light unit according to claim 4, 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, the reflector plate is not to infrared light transmittance
Less than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072362.XU CN209707727U (en) | 2019-01-16 | 2019-01-16 | Light guide plate and back light unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920072362.XU CN209707727U (en) | 2019-01-16 | 2019-01-16 | Light guide plate and back light unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209707727U true CN209707727U (en) | 2019-11-29 |
Family
ID=68639978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920072362.XU Active CN209707727U (en) | 2019-01-16 | 2019-01-16 | Light guide plate and back light unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427195A (en) * | 2020-04-27 | 2020-07-17 | 安徽精卓光显技术有限责任公司 | Backlight module and electronic equipment |
| CN111582028A (en) * | 2020-04-02 | 2020-08-25 | 江苏传艺科技股份有限公司 | Luminous fingerprint button |
| CN112666162A (en) * | 2020-12-17 | 2021-04-16 | 苏州天禄光科技股份有限公司 | Light guide plate mesh point density detection equipment and detection method thereof |
-
2019
- 2019-01-16 CN CN201920072362.XU patent/CN209707727U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111582028A (en) * | 2020-04-02 | 2020-08-25 | 江苏传艺科技股份有限公司 | Luminous fingerprint button |
| CN111427195A (en) * | 2020-04-27 | 2020-07-17 | 安徽精卓光显技术有限责任公司 | Backlight module and electronic equipment |
| CN112666162A (en) * | 2020-12-17 | 2021-04-16 | 苏州天禄光科技股份有限公司 | Light guide plate mesh point density detection equipment and detection method thereof |
| CN112666162B (en) * | 2020-12-17 | 2023-03-10 | 苏州天禄光科技股份有限公司 | Light guide plate mesh point density detection equipment and detection method thereof |
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