CN209514119U - A kind of light guide plate, backlight assembly and liquid crystal display device - Google Patents
A kind of light guide plate, backlight assembly and liquid crystal display device Download PDFInfo
- Publication number
- CN209514119U CN209514119U CN201920495838.0U CN201920495838U CN209514119U CN 209514119 U CN209514119 U CN 209514119U CN 201920495838 U CN201920495838 U CN 201920495838U CN 209514119 U CN209514119 U CN 209514119U
- Authority
- CN
- China
- Prior art keywords
- light
- prism
- protrusion
- backlight assembly
- plate body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model embodiment provides a kind of light guide plate, backlight assembly and liquid crystal display device, is related to field of display technology, peep-proof may be implemented and show.The light guide plate include: light conducting plate body and be arranged in the light conducting plate body light-emitting surface the first smooth aggregation infrastructure；The first smooth aggregation infrastructure is emitted after being used to make to be mapped to light convergence thereon.
Description
Technical field
The utility model relates to field of display technology more particularly to a kind of light guide plates, backlight assembly and liquid crystal display device.
Background technique
Liquid crystal display device (Liquid Crystal Display, abbreviation LCD) is due to small power consumption, micromation, light
The advantages that thin, thus have been more and more widely used.Increasingly developed with display technology, user is to liquid crystal display device
The requirement of energy is also higher and higher.Wherein, with mobile office, open working environment increase and that high-resolution is shown is general
And user is also more and more for the demand of peep-proof.
Currently, due to liquid crystal display device space have biggish luminous visual angle so that screen message, which is peeped to take, to be become to get over
It is easier to come, so that the safety of information is affected.Such as it for certain user, can read in public places
Confidential information, and visual angle is big, and by surrounding, other people see for meeting since liquid crystal display device shines, to be brought not to user
Just, thus exploitation have peep-proof function liquid crystal display device have become liquid crystal display device development trend.
Utility model content
The embodiments of the present invention provide a kind of light guide plate, backlight assembly and liquid crystal display device, and peep-proof may be implemented
Display.
In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that
In a first aspect, providing a kind of light guide plate, comprising: light conducting plate body and the light out that the light conducting plate body is arranged in
The smooth aggregation infrastructure of the first of face；The first smooth aggregation infrastructure is emitted after being used to make to be mapped to light convergence thereon.
In some embodiments, the described first smooth aggregation infrastructure is linear Fresnel structure, the linear Fresnel structure
Protrusion including multiple strips arranged in parallel；Alternatively, the first smooth aggregation infrastructure is circular Fresnel structure, the circle
Fresnel structure includes multiple protrusions, and each protrusion surrounds a circle or circular arc.
In some embodiments, the side of each protrusion includes the first surface close to the light conducting plate body center
With the second surface far from the light conducting plate body center；The second surface is to the light-emitting surface far from the light conducting plate body
One of the cambered surface of protrusion, the cambered surface being recessed to the light-emitting surface close to the light conducting plate body or inclined plane.
In some embodiments, the first surface is the plane perpendicular to the light-emitting surface of the light conducting plate body.
In some embodiments, the first surface of the protrusion far from the light conducting plate body center leans in two neighboring protrusion
The edge at the nearly light conducting plate body center and the first surface of the protrusion close to the light conducting plate body center are led far from described
Orthographic projection overlapping of the edge of tabula rasa body central on the light-emitting surface of the light conducting plate body.
In some embodiments, along the direction at the center of the light conducting plate body to edge, multiple protrusions are described
Width of the orthographic projection on the direction at the center of the light conducting plate body to edge on the light-emitting surface of light conducting plate body gradually subtracts
It is small.
In some embodiments, the light conducting plate body is integrally formed with the described first smooth aggregation infrastructure.
Second aspect provides a kind of backlight assembly, comprising: light source and light guide plate；The light guide plate is above-mentioned light guide plate.
In some embodiments, the backlight assembly further includes the prism that the light guide plate light emission side is arranged in；The rib
Mirror includes the second smooth aggregation infrastructure of prism ontology and the light-emitting surface that the prism ontology is arranged in and/or incidence surface；It is described
Second smooth aggregation infrastructure is emitted after being used to make to be mapped to light convergence thereon.
In some embodiments, the described second smooth aggregation infrastructure is linear Fresnel structure, the linear Fresnel structure
Protrusion including multiple strips arranged in parallel；Alternatively, the second smooth aggregation infrastructure is circular Fresnel structure, the circle
Fresnel structure includes multiple protrusions, and each protrusion surrounds a circle or circular arc.
In some embodiments, the side of each protrusion include close to the prism body central first surface and
Second surface far from the prism body central；The second surface is to the light-emitting surface protrusion far from the prism ontology
One of cambered surface, the cambered surface being recessed to the light-emitting surface close to the prism ontology or inclined plane.
In some embodiments, the first surface is the plane perpendicular to the light-emitting surface of the prism ontology.
In some embodiments, the raised first surface far from the prism body central in the two neighboring protrusion
Edge close to the prism body central and the first surface of the protrusion close to the prism body central are far from the prism
Orthographic projection overlapping of the edge of body central on the light-emitting surface of the prism ontology.
In some embodiments, along the direction at the center of the prism ontology to edge, positioned at going out for the prism ontology
Positive throwing of multiple protrusions on the light-emitting surface of the prism ontology in second smooth aggregation infrastructure of smooth surface and/or incidence surface
Width of the shadow on direction of the center of the prism ontology to edge is gradually reduced.
In some embodiments, the prism ontology is integrally formed with the described second smooth aggregation infrastructure.
In some embodiments, the backlight assembly further includes the diffusion being arranged between the light guide plate and the prism
Plate.
In some embodiments, the backlight assembly further includes the changeable diffusion that the light guide plate light emission side is arranged in
Piece；The changeable diffusion sheet can switch between transparent state and scattering states；When the changeable diffusion sheet is in scattering states,
The light being mapped to thereon can be scattered.
The third aspect provides a kind of liquid crystal display device, including liquid crystal display panel and above-mentioned backlight assembly；It is described
Backlight assembly is used to provide light source for the liquid crystal display panel.
In some embodiments, in the case where the backlight assembly includes changeable diffusion sheet, the liquid crystal display dress
Setting further includes controller；The controller switches between transparent state and scattering states for controlling the changeable diffusion sheet.
The utility model embodiment provides a kind of light guide plate, backlight assembly and liquid crystal display device, and light guide plate includes leaded light
Plate ontology and be arranged in light conducting plate body light-emitting surface the first smooth aggregation infrastructure, the first smooth aggregation infrastructure is for making to be mapped to it
On light convergence after be emitted.When light guide plate is applied in liquid crystal display device, due to the first smooth aggregation infrastructure in light guide plate
Be emitted after light convergence thereon can be made to be mapped to, thus the light that light source issues can converge after light guide plate, the light emission of convergence to
The light-emitting angle of liquid crystal display panel can be reduced after liquid crystal display panel, so as to realize that peep-proof is shown.Relative to related skill
The peep-proof film being arranged in art can absorb part light guide and brightness is caused to reduce, and the utility model embodiment is when realizing peep-proof, due to logical
The smooth aggregation infrastructure of first crossed in light guide plate makes light convergence realize peep-proof, because issuing the brightness of light without reducing backlight assembly,
It can satisfy the design requirement of high brightness, low-power consumption mould group.
Detailed description of the invention
Technical solution in order to illustrate more clearly of the utility model embodiment or in the related technology, below will be to embodiment
Or attached drawing needed in description of Related Art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram one of liquid crystal display device provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram of liquid crystal display panel provided by the embodiment of the utility model；
Fig. 3 a is a kind of structural schematic diagram of side entrance back component provided by the embodiment of the utility model；
Fig. 3 b is a kind of structural schematic diagram of direct type backlight assembly provided by the embodiment of the utility model；
Fig. 4 is a kind of structural schematic diagram one of light guide plate provided by the embodiment of the utility model；
Fig. 5 a is a kind of overlooking structure diagram one of light guide plate provided by the embodiment of the utility model；
Fig. 5 b is a kind of overlooking structure diagram two of light guide plate provided by the embodiment of the utility model；
Fig. 6 a be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view one；
Fig. 6 b be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view two；
Fig. 6 c be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view three；
Fig. 6 d be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view four；
Fig. 7 is a kind of structural schematic diagram for liquid crystal display device that the relevant technologies provide；
Fig. 8 a be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view five；
Fig. 8 b be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view six；
Fig. 9 a be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view seven；
Fig. 9 b be Fig. 5 a or Fig. 5 b in AA to schematic cross-sectional view eight；
Fig. 9 c is a kind of structural schematic diagram two of light guide plate provided by the embodiment of the utility model；
Figure 10 a is a kind of overlooking structure diagram three of light guide plate provided by the embodiment of the utility model；
Figure 10 b be Figure 10 a in BB to schematic cross-sectional view；
Figure 11 a is a kind of overlooking structure diagram four of light guide plate provided by the embodiment of the utility model；
Figure 11 b be Figure 11 a in CC to schematic cross-sectional view；
Figure 12 a is a kind of structural schematic diagram two of liquid crystal display device provided by the embodiment of the utility model；
Figure 12 b is a kind of structural schematic diagram three of liquid crystal display device provided by the embodiment of the utility model；
Figure 12 c is a kind of structural schematic diagram four of liquid crystal display device provided by the embodiment of the utility model；
Figure 13 a is a kind of structural schematic diagram five of liquid crystal display device provided by the embodiment of the utility model；
Figure 13 b is a kind of structural schematic diagram six of liquid crystal display device provided by the embodiment of the utility model；
Figure 13 c is a kind of structural schematic diagram seven of liquid crystal display device provided by the embodiment of the utility model；
Figure 13 d is a kind of structural schematic diagram eight of liquid crystal display device provided by the embodiment of the utility model；
Figure 14 a is a kind of structural schematic diagram nine of liquid crystal display device provided by the embodiment of the utility model；
Figure 14 b is a kind of structural schematic diagram ten for carrying on the back liquid crystal display device provided by the embodiment of the utility model；
Figure 14 c is a kind of structural schematic diagram 11 of liquid crystal display device provided by the embodiment of the utility model；
Figure 15 is a kind of structural schematic diagram 12 of liquid crystal display device provided by the embodiment of the utility model；
Figure 16 is a kind of structural schematic diagram 13 of liquid crystal display device provided by the embodiment of the utility model；
Figure 17 is a kind of structural schematic diagram 14 of liquid crystal display device provided by the embodiment of the utility model.
Appended drawing reference:
1- frame；2- cover-plate glass；3- liquid crystal display panel；4- backlight assembly；5- circuit board；10- array substrate；20-
To box substrate；30- liquid crystal layer；40- sealant；41- light guide plate；410- light conducting plate body；The smooth aggregation infrastructure of 411- first；42-
Light source；43- reflector plate；44- peep-proof film；45- prism；450- prism ontology；The smooth aggregation infrastructure of 451- second；46- diffuser plate；
Diffusion sheet can be switched in 47-；50- upper polaroid；60- down polaroid；The first substrate of 100-；101- pixel electrode；102- film is brilliant
Body pipe；103- public electrode；The first insulating layer of 104-；105- second insulating layer；The second substrate of 200-；201- chromatic filter layer；
202- black matrix pattern.
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 making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment provides a kind of liquid crystal display device, as shown in Figure 1, the primary structure of liquid crystal display device
Including other electronic components such as frame 1, cover-plate glass 2, liquid crystal display panel 3, backlight assembly 4 and circuit boards 5.
Wherein, the longitudinal section of frame 1 is U-shaped, and liquid crystal display panel 3, backlight assembly 4, circuit board 5 and other electronics are matched
Part is all set in frame 1, and backlight assembly 4 is set to the lower section of liquid crystal display panel 3, and circuit board 5 is set to backlight assembly 4
Lower section, cover-plate glass 2 are set to side of the liquid crystal display panel 3 far from backlight assembly 4.
As depicted in figs. 1 and 2, liquid crystal display panel 3 include the array substrate 10 that is oppositely arranged and to box substrate 20 and
Array substrate 10 is set and to the liquid crystal layer 30 between box substrate 20.As shown in Figure 1, array substrate 10 and logical to box substrate 20
It crosses sealant 40 to be pasted together, to liquid crystal layer 30 is limited in the region that sealant 40 surrounds.
As shown in Fig. 2, array substrate 10 includes multiple sub-pixes, each sub-pix includes being arranged in the first substrate 100
On pixel electrode 101 and thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT) 102.Thin film transistor (TFT) 102
Including source electrode, drain electrode, active layer, grid and gate insulation layer, pixel electrode 101 is electrically connected with the drain electrode of thin film transistor (TFT) 102.
On this basis, in some embodiments, as shown in Fig. 2, array substrate 10 further includes being arranged in the first substrate 100
On public electrode 103.Wherein, pixel electrode 101 and public electrode 103 can be set in same layer, in the case, pixel
Electrode 101 and public electrode 103 are the comb structure including multiple strip sub-electrodes.Pixel electrode 101 and public electrode 103
Also it can be set in different layers, in the case, as shown in Fig. 2, being provided between pixel electrode 101 and public electrode 103
One insulating layer 104.In the case where public electrode 103 is arranged between thin film transistor (TFT) 102 and pixel electrode 101, such as Fig. 2 institute
Show, second insulating layer 105 is additionally provided between public electrode 103 and thin film transistor (TFT) 102.It include common electrical in array substrate 10
In the case where pole 103 and pixel electrode 101, the horizontal component of electric field that public electrode 103 and pixel electrode 101 generate drives liquid crystal layer 30
In liquid crystal molecule rotation.It in further embodiments, include public electrode 103 to box substrate 20.Including to box substrate 20
Public electrode 103, in the case that array substrate 10 includes pixel electrode 101, what public electrode 103 and pixel electrode 101 generated
Liquid crystal molecule rotation in vertical electric field driven liquid crystal layer 30.
In order to realize colored display, liquid crystal display panel 3 further includes chromatic filter layer, and chromatic filter layer includes red photoresist
Unit, green photoresist unit and blue light resistance unit.
In some embodiments, as shown in Fig. 2, including the second substrate 200 and setting in the second substrate to box substrate 20
Chromatic filter layer 201 on 200 is referred to as color membrane substrates to box substrate 20 in the case.Wherein, red photoresist list
Member, green photoresist unit and blue light resistance unit respectively with the face one by one of the sub-pix in array substrate 10.Herein, along liquid crystal
The thickness direction of display panel 3, projection overlapping of the two of face on the first substrate 100.It is exemplary, it is in the horizontal direction, red
Coloured light hinders unit, green photoresist unit and blue light resistance unit periodic arrangement, and along the vertical direction, red photoresist unit is in column
Setting, green photoresist unit are in column setting, blue light resistance unit in column setting.
On this basis, as shown in Fig. 2, in order to avoid the mutual crosstalk of the light being emitted from neighboring sub-pixel, to box substrate 20
Can also include black matrix pattern 202 (Black Matrix, abbreviation BM).Exemplary, black matrix pattern 202 includes a plurality of parallel
The first shading strip surround multiple nets with a plurality of the second parallel shading strip, a plurality of first shading strip and a plurality of second shading strip
Lattice, red photoresist unit, green photoresist unit and blue light resistance unit are respectively set within a grid.
In further embodiments, array substrate 10 includes chromatic filter layer 201, red photoresist unit, green photoresist list
Member and blue light resistance unit are located in different sub-pixels.In the case, array substrate is referred to as COA substrate
(Color filter on Array, chromatic filter layer are integrated in array substrate).It is exemplary, in the horizontal direction, including red
The sub-pix of photoresist unit, the sub-pix including green photoresist unit and the sub-pix including blue light resistance unit are periodically arranged
Cloth, along the vertical direction, the sub-pix including red photoresist unit are set in column setting, the sub-pix including green photoresist unit in column
It sets, the sub-pix including blue light resistance unit is in column setting.
In the case where array substrate 10 includes chromatic filter layer 201, can be array substrate 10 includes being arranged first
Black matrix pattern 202 on substrate 100；It is also possible to include the black matrix figure being arranged on the second substrate 200 to box substrate 20
Case 202.
As shown in Fig. 2, liquid crystal display panel 3 further includes that the upper polarisation for deviating from 30 side of liquid crystal layer to box substrate 20 is arranged in
Piece 50 and the down polaroid 60 that array substrate 10 deviates from 30 side of liquid crystal layer is set, upper polaroid 50 and down polaroid 60
Light transmission shaft is mutually perpendicular to or in parallel.
The structure of liquid crystal display panel 3 based on Fig. 2, is mutually perpendicular to the light transmission shaft of upper polaroid 50 and down polaroid 60
For, when the liquid crystal display panel 3 is applied to liquid crystal display device, the displaying principle of the liquid crystal display device are as follows: backlight group
Part 4 issues white light, and the white polarised light with particular polarization is formed by down polaroid 60, injects liquid crystal display panel 3
In, the polarised light for forming redgreenblue is filtered by chromatic filter layer 201.Polarization direction and upper polaroid 50 when the polarised light
Polarization direction it is vertical when, polarised light cannot pass through upper polaroid；When the polarised light polarization direction and upper polaroid 50 it is inclined
When vibration direction is parallel, polarised light can pass through upper polaroid 50, and the light intensity of emergent light is most strong at this time.Since liquid crystal molecule is to polarization
Light has optically-active characteristic, and specific molecular arrangement direction can make the polarization direction of the polarised light change, as the row of liquid crystal molecule
When cloth direction is rotated by the electric field controls generated between pixel electrode 101 and public electrode 103, pass through the inclined of liquid crystal molecule
Vibration light direction also changes, so as to control that polarised light is emitted from upper polaroid 50 number.When pixel electrode 101 and public affairs
When common electrode 103 is rotated according to the regular control liquid crystal molecule of the electric signal being applied on each self-electrode, RGB sub-pix
Light will it is regular penetrate upper polaroid 50, ultimately form color image.Above-mentioned paths sequence are as follows: from backlight assembly
4 outgoing, successively through down polaroid 60, array substrate 10, liquid crystal layer 30, to box substrate 20, upper polaroid 50.
As shown in Figure 3a and Figure 3b shows, backlight assembly 4 includes light guide plate 41 and light source 42.As shown in Figure 3a, light source 42 can be with
The side of light guide plate 41 is set.In the case, which is side entrance back component.As shown in Figure 3b, light source 42
Also it can be set in the side of 41 light emission side of separate light guide plate of light guide plate 41.In the case, which is straight-down negative
Backlight assembly.
Herein, light source 42 for example can be light emitting diode (Light-Emitting Diode, abbreviation LED).In backlight
In the case that component 4 is direct type backlight assembly, as shown in Figure 3b, the LED that array arrangement can be used is fabricated to lamp plate, lamp plate
Light direction is against liquid crystal display panel 3.
On this basis, as shown in Figure 3a and Figure 3b shows, backlight assembly 4 can also include reflector plate 43, and reflector plate 43 is arranged
In the side of the separate light emission side of light guide plate 41.In the case where backlight assembly 4 is direct type backlight assembly, reflector plate 43 is arranged
In the side of the separate light guide plate 41 of light source 42.
The utility model embodiment provides a kind of light guide plate 41, can be applied in above-mentioned backlight assembly 4, this is practical new
The structure for the light guide plate 41 that type embodiment provides includes: to lead as shown in Fig. 4, Fig. 5 a, Fig. 5 b, Fig. 6 a, Fig. 6 b, Fig. 6 c and Fig. 6 d
Tabula rasa ontology 410 and be arranged in light conducting plate body 410 light-emitting surface the first smooth aggregation infrastructure 411；With reference to Fig. 6 a, the first light
Aggregation infrastructure 411 is emitted after being used to make to be mapped to light convergence thereon.
Light conducting plate body 410 is not illustrated in attached drawing 5a and Fig. 5 b.Fig. 5 a and Fig. 5 b are the schematic top plan view of light guide plate 41,
Fig. 6 a, Fig. 6 b, Fig. 6 c and Fig. 6 d be Fig. 5 a or Fig. 5 b in AA to diagrammatic cross-section.
Herein, for the shape of light conducting plate body 410 without limiting, the shape of light conducting plate body 410 can be such as Fig. 6 b
For wedge shape, cuboid can also be shown such as Fig. 4, Fig. 6 a, Fig. 6 c and Fig. 6 d.
On this basis, the specific structure of aggregation infrastructure 411 smooth for first is without limiting, can make to be mapped to thereon
After light convergence subject to outgoing.In some embodiments, as shown in figure 4, the first smooth aggregation infrastructure 411 is convex lens.At other
In embodiment, as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c and Fig. 6 d, the first smooth aggregation infrastructure 411 is Fresnel structure.This field skill
Art personnel should be understood that the smooth aggregation infrastructure 411 of the utility model embodiment exemplary first, be only during the utility model is implemented
Some optional embodiments, will not to the technical solution of the utility model generate limitation.
In addition, when making light guide plate 41, it can be and make light conducting plate body 410 and the respectively as shown in figures 6 a and 6b
Light conducting plate body 410 and the first smooth aggregation infrastructure 411 are fixed together later, such as pass through sticker by one smooth aggregation infrastructure 411
Together.It is also possible to as shown in figs. 6 c and 6d, light conducting plate body 410 and the first smooth aggregation infrastructure 411 are integrally formed.It is leading
In the case that tabula rasa ontology 410 and the first smooth aggregation infrastructure 411 are integrally formed, light conducting plate body 410 and the can be made simultaneously
One smooth aggregation infrastructure 411, to simplify the manufacture craft of light guide plate 41.
In the case where backlight assembly 4 is side entrance back component, the bottom surface opposite with light-emitting surface of light conducting plate body 410
On be provided with many sites, site can scatter the light of side entering type upwards.
In order to make liquid crystal display device have peep-proof function, the relevant technologies are when making liquid crystal display device, such as Fig. 7 institute
Show, one layer of peep-proof film 44 is added between liquid crystal display panel 3 and light guide plate 41.Attached drawing 7 by taking side entrance back component as an example into
Row signal.Peep-proof film 44 is designed based on " shutter " principle, realizes peep-proof, peep-proof film by controlling the light-emitting angle of light
44 for example can be grating.Since peep-proof film 44 is when controlling the light-emitting angle of light, the light meeting that is partially mapped on peep-proof film 44
It being absorbed, the light issued so as to cause light source 42 is wasted, and cause brightness to decline (brightness can decline 30%), thus be not able to satisfy
The design requirement of high brightness, low-power consumption mould group.
The utility model embodiment provides a kind of light guide plate 41, and light guide plate 41 includes that light conducting plate body 410 and setting exist
The smooth aggregation infrastructure 411 of the first of the light-emitting surface of light conducting plate body 410, the first smooth aggregation infrastructure 411 are used to make to be mapped to light thereon
It is emitted after convergence.When light guide plate 41 is applied in liquid crystal display device, due to the first smooth aggregation infrastructure 411 in light guide plate 41
It is emitted after light convergence thereon can be made to be mapped to, thus the light that light source 42 issues can converge after light guide plate 41, the light of convergence
The light-emitting angle of liquid crystal display panel 3 can be reduced after directive liquid crystal display panel 3, so as to realize that peep-proof is shown.Relative to
The peep-proof film 44 being arranged in the related technology can absorb part light guide and brightness is caused to reduce, and the utility model embodiment is realizing peep-proof
When, due to making light convergence realize peep-proof by the first smooth aggregation infrastructure 411 in light guide plate 41, because without reducing backlight assembly
4 issue the brightness of light, can satisfy the design requirement of high brightness, low-power consumption mould group.
In the case where the first smooth aggregation infrastructure 411 is Fresnel structure, in some embodiments, as shown in Figure 5 a, the
One smooth aggregation infrastructure 411 is linear Fresnel structure, and linear Fresnel structure includes the protrusion of multiple strips arranged in parallel.?
In other embodiments, as shown in Figure 5 b, the first smooth aggregation infrastructure 411 is circular Fresnel structure, circular Fresnel structure packet
Multiple protrusions are included, each protrusion surrounds a circle or circular arc.
It is to be understood that being linear in the first smooth aggregation infrastructure 411 when light guide plate 41 is applied in liquid crystal display device
In the case where Fresnel structure, the orientation of the protrusion of multiple strips should be parallel with the direction of viewer's left eye to right eye.This
Sample one, for the light that light source 42 issues after the in light guide plate 41 first smooth aggregation infrastructure 411 converges, the light of the left and right sides can be in
The heart collapses, to reduce the light-emitting angle of the left and right sides of liquid crystal display panel 3, thus two sides may be implemented (two sides refer to a left side
Side and right side) peep-proof shows.It is circle in the first smooth aggregation infrastructure 411 when light guide plate 41 is applied in liquid crystal display device
In the case where Fresnel structure, the light that light source 42 issues is after the in light guide plate 41 first smooth aggregation infrastructure 411 converges, left and right two
The light of side and upper and lower two sides can all be collapsed to center, to reduce going out at left and right sides of liquid crystal display panel 3 and upper and lower two sides
Angular, thus four sides (four sides refer to left side, right side, upside and downside) peep-proof may be implemented and show.
Either linear Fresnel structure or circular Fresnel structure, protrusion all include side and bottom surface, bottom surface with lead
The light-emitting surface of tabula rasa ontology 410 contacts.In some embodiments, as Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 6 d, Fig. 8 a, Fig. 8 b, Fig. 9 a,
Shown in Fig. 9 b, protrusion does not include top surface, only includes side and bottom surface.In further embodiments, as is shown in fig. 9 c, protrusion is also wrapped
Top surface is included, top and bottom are oppositely arranged.In addition, the bottom surface and top surface of protrusion can be parallel to each other, it can also be not parallel.Protrusion
Surface in other faces in addition to bottom surface and top surface be side.The side of each protrusion includes close to light conducting plate body 410
The second surface of the first surface at center and separate 410 center of light conducting plate body.
It should be noted that it includes in light conducting plate body 410 that raised side, which is removed, in the case where protrusion is strip
It further include being set relatively along raised extending direction outside the first surface of the heart and the second surface at separate 410 center of light conducting plate body
Two sides set.
Exemplary, with reference to Fig. 6 c, the side of each protrusion includes the first surface 411a close to 410 center of light conducting plate body
With the second surface 411b far from 410 center of light conducting plate body.
In some embodiments, as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c and Fig. 6 d, second surface is to far from light guide plate sheet
The cambered surface of the light-emitting surface protrusion of body 410.In further embodiments, as figures 8 a and 8 b show, second surface is to lead to close
The cambered surface of the light-emitting surface recess of tabula rasa ontology 410.In further embodiments, as shown in figures 9 a and 9b, second surface is to incline
Oblique plane.
It is to be understood that the protrusion positioned at center line two sides is symmetrical, the center line for linear Fresnel structure
Extending direction it is identical as the extending direction of strip projected parts.
On this basis, for the first surface of protrusion without limiting, first surface can be for far from light guide plate sheet
The cambered surface of the light-emitting surface protrusion of body 410；Or the cambered surface being recessed to the light-emitting surface close to light conducting plate body 410；Certainly also
It can be inclined plane or the plane of the light-emitting surface perpendicular to light conducting plate body 410.
For example, first surface is perpendicular to light conducting plate body 410 as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 8 a and Fig. 9 a
Light-emitting surface plane.In another example as shown in Figure 8 b, first surface is to be recessed to the light-emitting surface close to light conducting plate body 410
Cambered surface.In another example second surface is inclined plane as shown in Fig. 6 d and Fig. 9 b.
It is going out perpendicular to light conducting plate body 410 in first surface as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 8 a and Fig. 9 a
In the case where the plane of smooth surface, the manufacture craft of the first smooth aggregation infrastructure 411 on the one hand can simplify, on the other hand, light passes through
After first smooth aggregation infrastructure 411, light is more advantageous to 41 center convergence of light guide plate.
Based on the foregoing, it is desirable to which explanation is considered as two neighboring when designing the protrusion of the first smooth aggregation infrastructure 411
The orthographic projection of spacing, protrusion on the light-emitting surface of light conducting plate body between protrusion is at the center of light conducting plate body to edge direction
On width and protrusion first surface shape etc., to ensure that the first surface of all protrusions has the same focus.
It is exemplary, in width of the protrusion in the orthographic projection on the light-emitting surface of light conducting plate body on the center to edge direction of light conducting plate body
In the case that the shape of degree and the first surface of protrusion determines, the spacing between adjustable two neighboring protrusion is so that institute
The first surface of some protrusions has the same focus.
In some embodiments, as as-shown-in figures 10 a and 10b, two neighboring protrusion has gap.Herein, two neighboring
Spacing L between protrusion can be equal, can also be unequal.
In further embodiments, as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 6 d, Fig. 8 a, Fig. 8 b, Fig. 9 a and Fig. 9 a, phase
Very close to each other between adjacent two protrusions, i.e., two neighboring protrusion is located next to.It is perpendicular to light conducting plate body 410 in first surface
In the case where the plane of light-emitting surface, as shown in Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 8 a and Fig. 9 a, far from guide-lighting in two neighboring protrusion
The first surface of the protrusion at 410 center of plate ontology is close to the edge at 410 center of light conducting plate body and in light conducting plate body 410
Positive throwing of edge of the first surface far from 410 center of light conducting plate body of the protrusion of the heart on the light-emitting surface of light conducting plate body 410
Shadow overlapping.
The utility model embodiment, when the first table of the protrusion in two neighboring protrusion far from 410 center of light conducting plate body
Edge of the face close to 410 center of light conducting plate body and the first surface of the protrusion close to 410 center of light conducting plate body are far from guide-lighting
The edge at 410 center of plate ontology is in the orthographic projection overlapping on the light-emitting surface of light conducting plate body 410, the first smooth aggregation infrastructure 411
It is more preferable to the convergence effect of light, center convergence of the more advantageous light to light guide plate 41.It is applied to liquid crystal display device in light guide plate 41
In the case where, the light-emitting angle of liquid crystal display panel 3 is smaller, more favorably realizes peep-proof effect.
On this basis, in some embodiments, as shown in Figure 11 a and Figure 11 b, multiple protrusions are in light conducting plate body 410
Light-emitting surface on width K of the orthographic projection on the direction at the center of light conducting plate body 410 to edge it is equal.
It will be understood by those skilled in the art that in the case where the first smooth aggregation infrastructure 411 is linear Fresnel structure, on
It is parallel with the orientation of multiple protrusions to state " direction at the center of light conducting plate body 410 to edge ".
In further embodiments, as shown in Fig. 5 a, Fig. 5 b and Fig. 6 c, along the center of light conducting plate body 410 to edge
Direction, side of multiple orthographic projections of the protrusion on the light-emitting surface of light conducting plate body at the center of light conducting plate body 410 to edge
Upward width K is gradually reduced.
The utility model embodiment, when the direction along the center of light conducting plate body 410 to edge, multiple protrusions are in light guide plate
Width K of the orthographic projection on the direction at the center of light conducting plate body 410 to edge on the light-emitting surface of ontology 410 is gradually reduced
When, the convergence effect of first smooth 411 pairs of light of aggregation infrastructure is more preferable, center convergence of the more advantageous light to light guide plate 41.In light guide plate
In the case that 41 are applied to liquid crystal display device, the light-emitting angle of liquid crystal display panel 3 is smaller, more favorably realizes peep-proof effect.
Based on above-mentioned, in some embodiments, backlight assembly 4 is in addition to including light source 42 and light guide plate 41, such as Figure 12 a, figure
Shown in 12b and Figure 12 c, backlight assembly 4 further includes the prism 45 that 41 light emission side of light guide plate is arranged in.Wherein, increase prism 45,
Backlight assembly 4 can be improved goes out light homogeneity.
As shown in Figure 12 a, Figure 12 b and Figure 12 c, prism 45 includes prism ontology 450 and is arranged in prism ontology 450
Light-emitting surface and/or incidence surface the second smooth aggregation infrastructure 451；The light that second smooth aggregation infrastructure 451 is used to make to be mapped to thereon converges
It is emitted after poly-.
Herein, it can be as figure 12 a shows, second smooth aggregation infrastructure 451 only be set in the light-emitting surface of prism ontology 450；
It is also possible to as shown in Figure 12b, second smooth aggregation infrastructure 451 only is set in the incidence surface of prism ontology 450；Certainly it can also be
As shown in fig. 12 c, the second smooth aggregation infrastructure 451 is respectively provided in the incidence surface and light-emitting surface of prism ontology 450.
In the case where the light-emitting surface of prism ontology 450 or incidence surface are provided with the second smooth aggregation infrastructure 451, light source 42 is sent out
Light emission out is to during liquid crystal display panel 3, by once being converged when the first smooth aggregation infrastructure 411 in light guide plate 41
It is poly-, by prism 45 the second smooth aggregation infrastructure 451 when once converged, i.e. the light of the sending of light source 42 have passed through to converge twice
It is poly-.In the case where the light-emitting surface of prism ontology 450 and incidence surface are provided with the second smooth aggregation infrastructure 451, light source 42 is issued
Light emission to during liquid crystal display panel 3, by once being converged when the first smooth aggregation infrastructure 411 in light guide plate 41
Poly-, when the second smooth aggregation infrastructure 451 by 450 incidence surface of prism ontology is arranged in once is converged, by setting in rib
The smooth aggregation infrastructure 451 of the second of 450 light-emitting surface of mirror ontology is once converged, i.e., the light that light source 42 issues have passed through to converge three times
It is poly-.Based on this, when the light-emitting surface of prism ontology 450 and incidence surface are provided with the second smooth aggregation infrastructure 451, from backlight assembly 4
The light of outgoing more collapses, and dispersion angle is smaller, and convergence effect is more preferable.
The specific structure of aggregation infrastructure 451 smooth for second without limit, with can make to be mapped to thereon light convergence after go out
Subject to penetrating.In some embodiments, the second smooth aggregation infrastructure 451 is convex lens.In further embodiments, the second light convergence knot
Structure 451 is Fresnel structure.On this basis, the structure of the first smooth aggregation infrastructure 411 and the second smooth aggregation infrastructure 451 can phase
It together, can not also be identical.For example, the structure of the first smooth aggregation infrastructure 411 and the second smooth aggregation infrastructure 451 is Fresnel knot
Structure.In another example the first smooth aggregation infrastructure 411 is convex lens, the second smooth aggregation infrastructure 451 is Fresnel structure.
In addition, in the case where the incidence surface of prism ontology 450 and light-emitting surface are respectively provided with the second smooth aggregation infrastructure 451, if
Set structure in the second smooth aggregation infrastructure 451 of the incidence surface of prism ontology 450 and light-emitting surface that prism ontology 450 is set
The structure of second smooth aggregation infrastructure 451 can be identical, can not also be identical.For example, the incidence surface of prism ontology 450 is set
Second smooth aggregation infrastructure 451 is convex lens, and the second smooth aggregation infrastructure 451 of the light-emitting surface of prism ontology 450 is arranged in as luxuriant and rich with fragrance alunite
That structure.
Based on above-mentioned, when making prism 45, it can be and make prism ontology 450 and the second smooth aggregation infrastructure 451 respectively,
Prism ontology 450 and the second smooth aggregation infrastructure 451 are fixed together later, such as by gluing together.It is also possible to rib
Mirror ontology 450 and the second smooth aggregation infrastructure 451 are integrally formed.It is integrally formed in prism ontology 450 and the second smooth aggregation infrastructure 451
In the case where, prism ontology 450 and the second smooth aggregation infrastructure 451 can be made simultaneously, to simplify the manufacture craft of prism 45.
The utility model embodiment, since backlight assembly 4 further includes the prism 45 that 41 light emission side of light guide plate is arranged in, prism
45 include prism ontology 450 and are arranged in the light-emitting surface of prism ontology 450 and/or the second smooth aggregation infrastructure 451 of incidence surface,
Second smooth aggregation infrastructure 451 is emitted after being used to make to be mapped to light convergence thereon.It is applied in liquid crystal display device in backlight assembly 4
When, the directive prism 45 after the convergence of the light of light guide plate 41, since the second smooth aggregation infrastructure 451 in prism 45 can make to be mapped to
It is emitted after light convergence thereon, thus the smooth aggregation infrastructure 451 of second in prism 45 can further converge (or gathering) to light.
Light emission after converging in this way is to that can further decrease the light-emitting angle of liquid crystal display panel 3 after liquid crystal display panel 3, to more have
It is shown conducive to peep-proof.
In the case where the second smooth aggregation infrastructure 451 is Fresnel structure, in some embodiments, the second smooth aggregation infrastructure
451 be linear Fresnel structure, and linear Fresnel structure includes the protrusion of multiple strips arranged in parallel.In other embodiments
In, the second smooth aggregation infrastructure 451 is circular Fresnel structure, and circular Fresnel structure includes multiple protrusions, and each protrusion surrounds
One circle or circular arc.
It is to be understood that being linear luxuriant and rich with fragrance in the second smooth aggregation infrastructure 451 when prism 45 is applied in liquid crystal display device
In the case where Nie Er structure, the orientation of the protrusion of multiple strips should be parallel with the direction of viewer's left eye to right eye.In this way
One, after the second smooth aggregation infrastructure 451 of prism 45, the light of the left and right sides can collapse the light that light source 42 issues to center,
To reduce the light-emitting angle of the left and right sides of liquid crystal display panel 3, thus may be implemented two sides (two sides refers on the left of and the right side
Side) peep-proof shows.It is circular Fresnel knot in the second smooth aggregation infrastructure 451 when prism 45 is applied in liquid crystal display device
In the case where structure, the light that light source 42 issues is after the second smooth aggregation infrastructure 451 of prism 45, the left and right sides and upper and lower two sides
Light can all be collapsed to center, to reduce the light-emitting angle of liquid crystal display panel 3 left and right sides and upper and lower two sides, thus can be with
Realize that four sides (four sides refer to left side, right side, upside and downside) peep-proof is shown.
Either linear Fresnel structure or circular Fresnel structure, protrusion all include side and bottom surface, bottom surface and rib
Mirror ontology 450 contacts, and in some embodiments, as shown in Figure 12 a, Figure 12 b, Figure 12 c, Figure 13 a, Figure 13 b, Figure 13 c, protrusion is not
It only include side and bottom surface including top surface.In further embodiments, as shown in figure 13d, protrusion further includes top surface, top surface and
Bottom surface is oppositely arranged.In addition, top and bottom can be parallel to each other, it can also be not parallel.Bottom surface and top are removed in the surface of protrusion
Other faces other than face are side.The side of each protrusion includes close to the first surface at 450 center of prism ontology and far from rib
The second surface at 450 center of mirror ontology.
It should be noted that it includes close to 450 center of prism ontology that raised side, which is removed, in the case where protrusion is strip
First surface and far from 450 center of prism ontology second surface outside, further include along protrusion extending direction be oppositely arranged
Two sides.
In some embodiments, as shown in Figure 12 a, Figure 12 b and Figure 12 c, second surface is to far from prism ontology 450
Light-emitting surface protrusion cambered surface.In further embodiments, as shown in Figure 14 a, Figure 14 b and Figure 14 c, second surface is to leaning on
The cambered surface of the light-emitting surface recess of nearly prism ontology 450.In further embodiments, as shown in Figure 13 a, Figure 13 b and Figure 13 c,
Second surface is inclined plane.
It is to be understood that the protrusion positioned at center line two sides is symmetrical, the center line for linear Fresnel structure
Extending direction it is identical as the extending direction of strip projected parts.
Herein, it is provided with the second smooth aggregation infrastructure 451 in the light-emitting surface and incidence surface of prism ontology 450, and be arranged
It, can be such as figure in the case that the light-emitting surface of prism ontology 450 and the second smooth aggregation infrastructure 451 of incidence surface are Fresnel structure
Shown in 12c, Figure 13 c and Figure 14 c, the second table in the second smooth aggregation infrastructure 451 of the light-emitting surface of prism ontology 450 is set
Face and the second surface of the second smooth aggregation infrastructure 451 of the incidence surface that prism ontology 450 is arranged in are identical.For example, as schemed
Shown in 12c, the second surface in the second smooth aggregation infrastructure 451 of the light-emitting surface of prism ontology 450 is set and is arranged in prism
Second surface in the smooth aggregation infrastructure 451 of the second of the incidence surface of ontology 450 is convex to the light-emitting surface far from prism ontology 450
The cambered surface risen.It is also possible to as shown in figure 15, be arranged in the second smooth aggregation infrastructure 451 of the light-emitting surface of prism ontology 450
Second surface in second smooth aggregation infrastructure 451 of second surface and the incidence surface that prism ontology 450 is arranged in is different.
Exemplary, as shown in figure 15, the second surface being arranged in the second smooth aggregation infrastructure 451 of the light-emitting surface of prism ontology 450 is
The cambered surface of light-emitting surface protrusion far from prism ontology 450, is arranged in the second smooth aggregation infrastructure of the incidence surface of prism ontology 450
Second surface in 451 is inclined plane.
On this basis, for the first surface of protrusion without limiting, first surface can be for far from prism ontology
The cambered surface of 450 light-emitting surface protrusion；Or the cambered surface being recessed to the light-emitting surface close to prism ontology 450；It certainly can be with
The plane of light-emitting surface for inclined plane or perpendicular to prism ontology 450.
In the case where first surface is the plane perpendicular to the light-emitting surface of prism ontology 450, the on the one hand can simplify
The manufacture craft of two smooth aggregation infrastructures 451, on the other hand, light is more advantageous to light to leaded light after the second smooth aggregation infrastructure 451
Plate center convergence.
Based on the foregoing, it is desirable to which explanation is considered as two neighboring when designing the protrusion of the second smooth aggregation infrastructure 451
Spacing, protrusion between protrusion are in the orthographic projection on the light-emitting surface of prism ontology on the center to edge direction of prism ontology
The shape etc. of width and the first surface of protrusion, to ensure the first table of all protrusions positioned at prism ontology the same side
Face has the same focus.It is exemplary, it is arrived in orthographic projection of the protrusion on the light-emitting surface of prism ontology at the center of prism ontology
In the case that the shape of the first surface of width and protrusion in edge direction determines, between adjustable two neighboring protrusion
Spacing so that be located at prism ontology the same side it is all protrusion first surface have the same focus.
In some embodiments, two neighboring protrusion has gap.Herein, the spacing between two neighboring protrusion can phase
Deng can also be unequal.
In further embodiments, very close to each other between two neighboring protrusion, i.e., two neighboring protrusion is located next to.First
In the case that surface is the plane perpendicular to the light-emitting surface of prism ontology 450, far from prism ontology 450 in two neighboring protrusion
The first of edge of the first surface of the protrusion of the heart close to 450 center of prism ontology and the protrusion close to 450 center of prism ontology
Orthographic projection overlapping of edge of the surface far from 450 center of prism ontology on the light-emitting surface of prism ontology 450.
The utility model embodiment, when the first surface of the protrusion in two neighboring protrusion far from 450 center of prism ontology
Edge close to 450 center of prism ontology and the first surface of the protrusion close to 450 center of prism ontology are far from prism ontology 450
The edge at center is in the orthographic projection overlapping on the light-emitting surface of prism ontology 450, the convergence effect of second 451 pairs of light of smooth aggregation infrastructure
Fruit is more preferable, is more advantageous to center convergence of the light to prism 45.In the case where backlight assembly 4 is applied to liquid crystal display device, liquid
The light-emitting angle of LCD panel 3 is smaller, more favorably realizes peep-proof effect.
On this basis, in some embodiments, positioned at the light-emitting surface of prism ontology 450 and/or the second light of incidence surface
Orthographic projection of multiple protrusions on the light-emitting surface of prism ontology 450 in aggregation infrastructure 451 is at the center of prism ontology 450 to side
Width on the direction of edge is equal.
It will be understood by those skilled in the art that in the case where the second smooth aggregation infrastructure 451 is linear Fresnel structure, on
It is parallel with the orientation of multiple protrusions to state " direction at the center of prism ontology 450 to edge ".
In further embodiments, along the direction at the center of prism ontology 450 to edge, positioned at going out for prism ontology 450
Orthographic projection of multiple protrusions on the light-emitting surface of prism ontology 450 in second smooth aggregation infrastructure 451 of smooth surface and/or incidence surface
Width on the direction at the center of prism ontology 450 to edge is gradually reduced.
The utility model embodiment, when the direction along the center of prism ontology 450 to edge, positioned at prism ontology 450
Positive throwing of multiple protrusions on the light-emitting surface of prism ontology 450 in second smooth aggregation infrastructure 451 of light-emitting surface and/or incidence surface
Shadow is when the width on the direction at the center of prism ontology 450 to edge is gradually reduced, the remittance of second smooth 451 pairs of light of aggregation infrastructure
Poly- effect is more preferable, center convergence of the more advantageous light to prism.In the case where backlight assembly 4 is applied to liquid crystal display device, liquid
The light-emitting angle of LCD panel 3 is smaller, more favorably realizes peep-proof effect.
In some embodiments, as shown in figure 16, backlight assembly 4 further includes being arranged between light guide plate 41 and prism 45
Diffuser plate 46.
Herein, 46 surface of diffuser plate has coat, and coat includes some particles, light can be broken up.
In the utility model embodiment, backlight assembly 4 further includes diffuser plate 46, since diffuser plate 46 can beat light
It dissipates, thus the brightness homogeneity of backlight assembly 4 can be improved.Further, since diffuser plate 46 has certain mist degree, thus may be used also
To play the role of concealing.
In some embodiments, as shown in figure 17, backlight assembly 4 further includes that can be switched for 41 light emission side of light guide plate is arranged in
Diffusion sheet 47；Changeable diffusion sheet 47 can switch between transparent state and scattering states；Changeable diffusion sheet 47 is in scattering states
When, the light being mapped to thereon can be scattered.
Herein, it for example can be that (Polymer Dispersed Liquid Crystal gathers PDLC that diffusion sheet 47, which can be switched,
Close object dispersed LCD) scattering film.
In addition, diffusion sheet 47 can be switched and be arranged in prism in the case where backlight assembly 4 includes prism 45 and diffuser plate 46
45 light emission side.Changeable diffusion sheet 47 can be set between liquid crystal display panel 3 and prism 45, also can be set in liquid crystal
The light emission side of display panel 3.
In the utility model embodiment, since changeable diffusion sheet 47 can switch between transparent state and scattering states, because
This is when backlight assembly 4 is applied to liquid crystal display device, when changeable diffusion sheet 47 is in transparent state, converges by light guide plate 41
Light after poly- is after changeable diffusion sheet 47, and light emitting angle will not change, therefore liquid crystal display device may be implemented to prevent
Peep display；When changeable diffusion sheet 47 is in scattering states, changeable diffusion sheet 47 can be scattered the light being mapped to thereon, because
This light after the convergence of light guide plate 41 is after changeable diffusion sheet 47, and light emitting angle will increase, thus liquid crystal display device
It may be implemented normally to show (i.e. non-peep-proof shows or share that state is shown).
Based on above-mentioned, in the case where backlight assembly 4 includes changeable diffusion sheet 47, selection liquid crystal can according to need
Showing device realizes that peep-proof is shown, or realizes normal display, to improve user experience.
On this basis, in the case where backlight assembly 4 includes changeable diffusion sheet 47, liquid crystal display device further includes control
Device processed；Controller switches between transparent state and scattering states for controlling changeable diffusion sheet 47.
Herein, controller can integrate on PCB (Printed Circuit Board, printed circuit board) plate.
The utility model embodiment, since controller can control changeable diffusion sheet 47 between transparent state and scattering states
Switching, and changeable diffusion sheet 47 is in transparent state or scattering states, decides that liquid crystal display device realizes that peep-proof is shown still just
Often display, therefore controller can control liquid crystal display device and realize that peep-proof shows or share that state is shown.
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, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with described
Subject to scope of protection of the claims.
Claims (19)
1. a kind of light guide plate characterized by comprising light conducting plate body and the light-emitting surface that the light conducting plate body is arranged in
First smooth aggregation infrastructure；
The first smooth aggregation infrastructure is emitted after being used to make to be mapped to light convergence thereon.
2. light guide plate according to claim 1, which is characterized in that the first smooth aggregation infrastructure is linear Fresnel knot
Structure, the linear Fresnel structure include the protrusion of multiple strips arranged in parallel；
Alternatively, the first smooth aggregation infrastructure is circular Fresnel structure, the circular Fresnel structure includes multiple protrusions, often
A protrusion surrounds a circle or circular arc.
3. light guide plate according to claim 2, which is characterized in that the side of each protrusion includes close to the leaded light
The second surface of the first surface of plate body central and the separate light conducting plate body center；
The second surface is to the cambered surface of the light-emitting surface protrusion far from the light conducting plate body, to close to the light conducting plate body
Light-emitting surface recess cambered surface or one of inclined plane.
4. light guide plate according to claim 3, which is characterized in that the first surface is perpendicular to the light conducting plate body
Light-emitting surface plane.
5. light guide plate according to claim 4, which is characterized in that far from the light conducting plate body in two neighboring protrusion
Edge of the first surface close to the light conducting plate body center of the protrusion of the heart and the protrusion close to the light conducting plate body center
Edge of the first surface far from the light conducting plate body center on the light-emitting surface of the light conducting plate body orthographic projection overlapping.
6. light guide plate according to claim 5, which is characterized in that along the side at the center of the light conducting plate body to edge
To orthographic projection of multiple protrusions on the light-emitting surface of the light conducting plate body is at the center of the light conducting plate body to edge
Direction on width be gradually reduced.
7. light guide plate according to claim 1, which is characterized in that the light conducting plate body and the described first smooth aggregation infrastructure
It is integrally formed.
8. a kind of backlight assembly, comprising: light source and light guide plate；It is characterized in that, the light guide plate is any one of claim 1-7
The light guide plate.
9. backlight assembly according to claim 8, which is characterized in that the backlight assembly further includes being arranged in the light guide plate
The prism of light emission side；
The prism includes the second light convergence of prism ontology and the light-emitting surface that the prism ontology is arranged in and/or incidence surface
Structure；The second smooth aggregation infrastructure is emitted after being used to make to be mapped to light convergence thereon.
10. backlight assembly according to claim 9, which is characterized in that the second smooth aggregation infrastructure is linear Fresnel
Structure, the linear Fresnel structure include the protrusion of multiple strips arranged in parallel；
Alternatively, the second smooth aggregation infrastructure is circular Fresnel structure, the circular Fresnel structure includes multiple protrusions, often
A protrusion surrounds a circle or circular arc.
11. backlight assembly according to claim 10, which is characterized in that the side of each protrusion includes close to described
The second surface of the first surface of prism body central and the separate prism body central；
The second surface is the cambered surface to the light-emitting surface protrusion far from the prism ontology, going out to the close prism ontology
One of cambered surface or inclined plane of smooth surface recess.
12. backlight assembly according to claim 11, which is characterized in that the first surface is perpendicular to the prism sheet
The plane of the light-emitting surface of body.
13. backlight assembly according to claim 12, which is characterized in that far from the prism in the two neighboring protrusion
The first surface of the protrusion of body central close to the prism body central edge and the close prism body central it is convex
Orthographic projection overlapping of edge of the first surface far from the prism body central risen on the light-emitting surface of the prism ontology.
14. backlight assembly according to claim 13, which is characterized in that along the side at the center of the prism ontology to edge
To multiple protrusions in the light-emitting surface of the prism ontology and/or the second smooth aggregation infrastructure of incidence surface are described
The width of orthographic projection on the light-emitting surface of prism ontology on direction of the center of the prism ontology to edge is gradually reduced.
15. backlight assembly according to claim 9, which is characterized in that the prism ontology and second light convergence are tied
Structure is integrally formed.
16. backlight assembly according to claim 9, which is characterized in that the backlight assembly further includes that setting is led described
Diffuser plate between tabula rasa and the prism.
17. backlight assembly according to claim 8, which is characterized in that the backlight assembly further includes that setting is led described
The changeable diffusion sheet of tabula rasa light emission side；
The changeable diffusion sheet can switch between transparent state and scattering states；The changeable diffusion sheet is in scattering states
When, the light being mapped to thereon can be scattered.
18. a kind of liquid crystal display device, which is characterized in that including liquid crystal display panel and such as any one of claim 8-17 institute
The backlight assembly stated；
The backlight assembly is used to provide light source for the liquid crystal display panel.
19. liquid crystal display device according to claim 18, which is characterized in that expand in the backlight assembly including changeable
In the case where discrete piece, the liquid crystal display device further includes controller；The controller is for controlling the changeable diffusion sheet
Switch between transparent state and scattering states.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495838.0U CN209514119U (en) | 2019-04-12 | 2019-04-12 | A kind of light guide plate, backlight assembly and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495838.0U CN209514119U (en) | 2019-04-12 | 2019-04-12 | A kind of light guide plate, backlight assembly and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209514119U true CN209514119U (en) | 2019-10-18 |
Family
ID=68188220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920495838.0U Active CN209514119U (en) | 2019-04-12 | 2019-04-12 | A kind of light guide plate, backlight assembly and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209514119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729839B (en) * | 2020-06-05 | 2021-06-01 | 瑞儀光電股份有限公司 | Light guide plate, backlight module and display device |
-
2019
- 2019-04-12 CN CN201920495838.0U patent/CN209514119U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729839B (en) * | 2020-06-05 | 2021-06-01 | 瑞儀光電股份有限公司 | Light guide plate, backlight module and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102316310B1 (en) | Display panel and display device | |
| TW202001842A (en) | Display subtrate, display panel and display device | |
| CN212255969U (en) | Display device | |
| WO2020063231A1 (en) | Liquid crystal display panel and display device, and operating method thereof | |
| WO2017084396A1 (en) | Display substrate, display panel, and display apparatus | |
| CN209373316U (en) | A kind of array substrate and liquid crystal display panel | |
| CN102681164B (en) | Dimming device and display | |
| JP2010231010A (en) | Electrooptical device | |
| CN106483710A (en) | A kind of display base plate, display floater and display device | |
| CN214751240U (en) | Visual angle switchable backlight module and display device | |
| CN107065362A (en) | Display base plate, display panel and display device | |
| CN209514119U (en) | A kind of light guide plate, backlight assembly and liquid crystal display device | |
| CN113451530A (en) | Polarizing structure, preparation method thereof, touch display panel and display device | |
| US11333938B2 (en) | Display panel, driving method thereof, and display device | |
| CN111812768A (en) | Light guide plate, backlight assembly and liquid crystal display device | |
| JPS6111788A (en) | Image display | |
| CN113741085B (en) | Double-sided display panel | |
| CN209460542U (en) | A kind of backlight assembly and liquid crystal display device | |
| CN109557731A (en) | Array substrate, display panel and display | |
| CN113138490A (en) | Reflective display panel | |
| US10338456B2 (en) | Display apparatus with liquid crystal display projecting an image on a transmissive screen | |
| JPS59135427A (en) | Liquid crystal panel used for color image display device | |
| CN114859610B (en) | Display screen and display device | |
| CN111383579A (en) | Display panel and display device | |
| CN212781586U (en) | Dual display module and dual display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |