CN107327747A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
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- CN107327747A CN107327747A CN201710493068.1A CN201710493068A CN107327747A CN 107327747 A CN107327747 A CN 107327747A CN 201710493068 A CN201710493068 A CN 201710493068A CN 107327747 A CN107327747 A CN 107327747A
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- light
- backlight module
- guide plate
- reflection
- reflecting surface
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- 239000000463 material Substances 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002096 quantum dot Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 241001025261 Neoraja caerulea Species 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of backlight module and display device.The backlight module of the present invention, including light guide plate and side entering type light source, the light guide plate include reflecting surface and the light incident sides vertical with the reflecting surface；Include multiple first reflection sites that interval is laid, and the second reflector space formed by the border of the described first reflection site with exterior domain on the reflecting surface；On the reflecting surface at least an edge area, fluorescent material is provided with least part of first reflection site, and the fluorescent material is arranged on the first reflection site；And, the side entering type light source is arranged on the side of the light incident sides, is injected with realizing that light source emits beam from the light incident sides in the light guide plate.Disclosed display device includes display panel, frame and above-mentioned backlight module.Stipple pattern and its arrangement mode are reflected by providing a kind of light guide plate, the blue side phenomenon of display device has been effectively eliminated and has ensured that display device viewing area color is uniform.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of backlight module and display device.
Background technology
With the development of Display Technique, the image quality and appearance of display device are increasingly by manufacturer and consumer
Attention.The well-balanced property of backlight module back light and the rich image quality to display device are played an important role.
In the prior art, sidelight type backlight module is widely used in display device due to having many advantages, such as, sidelight
Formula backlight module includes light source and light guide plate.The light entered by light source from light guide plate side surface coupling is converted into from just using light guide plate
The light that face is uniformly exported, moreover, the uniformity and the brightness of its output light, are largely advised by the arrangement of bottom surface of light guide plate site
Rule influence.So as to utilize emergent ray excitation quantum point material（Cadmium selenide, zinc sulphide, make diaphragm and are placed on above light guide plate）
White light is produced, by controlling the concentration of quanta point material, and control launching efficiency, light guide plate exiting surface can be achieved and produces uniformly
White light.As shown in figure 1, so that light source is blue light as an example, the color of the white point in screen center region be by zonule blue light and
Feux rouges and green glow from the wider region of quantum film are mixed, and are by other more than the feux rouges and green glow of blue region
The blue light in region excites generation, and for certain point close to marginal position, blue region keeps constant, and beyond blue light
The feux rouges and green wavelength in region are reduced due to the blue light illumination that diaphragm is subject to, thus feux rouges and green color components reduction, so as to lead
Cause mixing point color partially blue.
In addition, as shown in Fig. 2 closer to the position of light-guide edge, incident light source incides light guide plate reflecting surface
On incidence angle it is smaller, within a certain position close to edge, incident ray can not meet total reflection, a part of incident ray
The reflecting surface of light guide plate is reflected, light losing is caused, loses more closer to rim ray, thus, some light is reflected
The fringe region of light guide plate causes blue side phenomenon.
For problem above, in the prior art, what the method reduction blue light for pasting reflector plate using light guide plate side was spilt asks
Topic, but be due to that light-guide edge position has stronger blue light relative to centre position, by reflector plate reflection and quantum dot
Material excites back edge position still to have some blue light directly to transmit away, and the diffusion effect of side type reflector plate will also result in
Some light reflects light guide plate, and blue side phenomenon is still present, and is illustrated in figure 3 backlight module curve of light distribution figure.Herein
On the basis of another scheme for eliminating blue side phenomenon be suggested, it is considered to the factor such as light guide plate print solution and typography, preferentially
Selection light guide plate intermediate region is converted into white light, and marginal position considers increase phosphor material powder to eliminate the design on blue side.
The design is specifically, light guide plate is using the method for setting gradually reflection site, and schematic diagram is as shown in figure 4, simultaneously
So that side entering type light source is blue light as an example, it is primarily provided to reflect the blue light into light guide plate 60 is injected for the first time, i.e., is led in monoblock
Printed on the reflecting surface of tabula rasa 60 or the reflection of laser-induced thermal etching first site 601, the first reflection site 601 is circular or square
Shape, and need to meet basic function of optical reflection for the density of the first reflection site 601 of reflection light；Second main
It is provided for eliminating the second reflection site 602 of the blue side phenomenon of surrounding, yellow is set in the fringe region of the bottom of light guide plate 60
Fluorescent material forms the second reflection site 601, and the printing of the yellow fluorescent powder both needs to consider that typography and printing are multiple
The requirement of miscellaneous degree, also should ensure that and realizes that it neutralizes and eliminates the suitable size of the energy requirement of blue light, i.e. fluorescent material area, realize
Blue area of light is neutralized, white light is finally presented.This programme considers the factors such as the typography of prior art and convenient production, the
One reflection site 601 is set to square, and the second reflection site 602 is set to circular, and square is the first reflection site 601 in Fig. 4,
For reflecting blue light；Circle is the second reflection site 602, which is provided with yellow fluorescent powder.Wherein, adjacent two first reflections
The gap on horizontal direction and vertical direction between site 601 is respectively a1=0.687mm and a2=1.18mm, and square
The length of side is 0.71mm, and regularly arranged.The second reflection shape of site 602 includes a diameter of d1=1.4mm and d2=1.2mm circle
Shape.In order to both need to meet the first optical reflection requirement for reflecting site 601, need to meet glimmering on the second reflection site 602 again
In light powder and blue light energy requirement, and diameter d2=1.2 of the provided with fluorescent material second reflection site 602 have been above the
Maximal clearance a2=1.18 between one reflection site 601, cause to arrange anyway and have part site and overlap, very
All being overlapped to there is the first reflection site 601 and second reflection site 602, causing the effect of part site to be failed, Jin Erxian
Show that panel lacks blue light and gold-tinted so that the problem of solving after the blue side phenomenon of surrounding region colour cast again.
The content of the invention
The present invention provides a kind of backlight module and display device, and there is provided a kind of light guide plate reflection stipple pattern and its arrangement side
Formula, to eliminate blue side phenomenon and ensure that viewing area color is uniform.
First aspect present invention provides a kind of backlight module, including light guide plate and side entering type light source, and wherein light guide plate includes
Reflecting surface and the light incident sides vertical with reflecting surface；Include multiple first reflection sites that interval is laid on reflecting surface, and
The second reflector space formed by the border of the described first reflection site with exterior domain；In a reflecting surface at least edge area
On, fluorescent material is provided with least part of first reflection site, and fluorescent material is arranged on the first reflection site；And,
Side entering type light source is arranged on the side of light incident sides, is injected with realizing that light source emits beam from light incident sides in light guide plate.
Further, the arrangement modes for multiple first reflections sites that interval is laid are that the first reflection site is embarked on journey alignment
And be intervally arranged on the reflecting surface；Or first reflection site align and be intervally arranged on the reflecting surface in column.
Further, the size of the fluorescent material away from edge is less than the fluorescent material close to edge in the first reflection site
Size.
Further, fluorescent material is mixed with scattering particles, and is formed by ink printing；Second reflector space passes through laser radium
Penetrate or hot pressing is in depression, or pass through screen printing mode the second reflector space of formation.
Further, side entering type light source be blue-light source, fluorescent material be set to yellow fluorescent powder or red fluorescence powder with it is green
The mixing of color fluorescent material.
Further, in addition to diaphragm, diaphragm is comprising quanta point material and is arranged on the top of light guide plate exiting surface.
Optionally, the shape of the first reflection site includes circular, ellipse or regular hexagon.
Another aspect of the present invention provides a kind of display device, including above-mentioned backlight module, in addition to display panel, side
Frame, backlight module is arranged in frame with display panel, and display panel is arranged on the top of backlight module.
The present invention is for the blue side phenomenon of display device and region colour cast problem, it is proposed that a kind of new light guide plate reflection site
Pattern and its arrangement mode, effectively eliminate blue side phenomenon, compared with prior art, and the present invention sets mutual on the reflecting surface
Every the first misaligned reflection site and the second reflector space, and the first reflection site is provided with fluorescent material for eliminating Lan Bianxian
As the second reflector space is used to realize the reflection to side entering type light source, by proposed by the present invention in the whole reflecting surface of light guide plate
The multiple first reflection sites being intervally arranged are set, the fluorescent material for neutralizing unnecessary light is which is provided with, and it is anti-by described first
The border of site is penetrated with exterior domain the second reflector space of formation, for realizing the reflection of light guide plate and exporting the work(of uniform light
Can, both met light guide plate optical reflection requirement and fluorescent material in and blue light energy requirement, light guide plate is taken full advantage of again
The plane domain of reflecting surface, improves the utilization rate of light guide plate.Fluorescent material site and optical network effectively prevent by this structure
Overlapping for point, has effectively eliminated blue side phenomenon, and ensure that viewing area color is uniform.
Brief description of the drawings
In order to illustrate the embodiments of the present invention more clearly or scheme of the prior art, below will be to embodiment or existing skill
The accompanying drawing used required in art description does one and simply introduced, it should be apparent that, drawings in the following description are of the invention
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the light synthesis schematic diagram that backlight module produces white light；
Fig. 2 propagates schematic diagram for light in the light guide plate of backlight module；
Fig. 3 is backlight module curve of light distribution figure；
Fig. 4 is site arrangement schematic diagram on light guide plate in the prior art；
Fig. 5 is the overall structure diagram of display device in the embodiment of the present invention；
Fig. 6 is the overall structure diagram of light guide plate in the embodiment of the present invention；
Fig. 7 is site arrangement schematic diagram on light guide plate in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present embodiment provides a kind of backlight module and display device, fringe region when the present embodiment is directed to backlight module light extraction
Partially blue phenomenon provides a kind of backlight module, as shown in figure 5, illustrating for a kind of overall structure of display device in the present embodiment
Figure, the backlight module that the present embodiment is provided includes light guide plate 10 and side entering type light source 20, in addition to is arranged on the top of light guide plate 10
Diaphragm 30.
Wherein, as shown in Figure 6 and Figure 7, light guide plate 10 includes reflecting surface 102 and the incident side vertical with reflecting surface 102
Face 101, wherein, multiple first reflection sites 1021 that interval is laid are included on reflecting surface 102, and by the first reflection site
The second reflector space 1022 that 1021 border is formed with exterior domain；
On reflecting surface 102 at least an edge area, fluorescent material is provided with least part of first reflection site 1021
1023, and fluorescent material 1023 is arranged on the first reflection site 1021；
And, side entering type light source 20 is arranged on the side of light incident sides 101, to realize that light source 20 emits beam from light incident sides
101 inject in light guide plate 10.And side entering type light source 20 is blue-light source in the present embodiment.
The present embodiment further also provides a kind of display device, and display device includes the backlight mould provided in the present embodiment
The backlight module that group, in addition to display panel 40, frame 50, display panel 40 and the present embodiment are provided is arranged at frame 50
In, and backlight module is oppositely arranged with display panel 40.Specifically, display panel 40 is arranged on the top of backlight module, backlight
Module can provide uniform back light for display panel 40.
A kind of backlight module and display device provided for specific description the present embodiment, below by the present embodiment
Embodiment is further elaborated, and white light producing method illustratively in the present embodiment and blue side producing cause.
In a display device, display panel 40 itself is not lighted, and backlight module is carried as the light source of the behind of display panel 40
Donor, by being modulated to the light source that backlight module is sent, can make display panel 40 realize the function of display image, so
The source mass of backlight module directly determines the image quality and display effect of display panel 40.Light guide plate 10 is sidelight type backlight module
In primary optics, its act on the light entered from the side surface coupling of light guide plate 10 can be converted into it is uniform from the front of light guide plate 10
The light of output, and the uniformity and the brightness of output light, are largely influenceed by the pattern and arrangement mode of bottom surface site,
Therefore the display effect of display panel 40 will also be had influence on.
In the prior art, the reason for site is overlapped will directly influence the uniform of output light from the density that site is arranged
Degree and brightness.When site arrangement spacing is larger, output light there will be dim light area；When site arrangement spacing is smaller, output light
There will be highlights；When site arrangement spacing is suitable, the output light uniformity is preferable.As shown in figure 4, to ensure the output light uniformity
Preferably, the gap on the horizontal direction and vertical direction of the first reflection site 601 is respectively a1=0.687mm and a2=1.18mm,
And need to meet the energy requirement in the fluorescent material on the second reflection site 602 with blue light, the second reflection shape of site 602 simultaneously
Include a diameter of d1=1.4mm and d2=1.2mm circle.Due to provided with fluorescent material second reflection site 602 diameter d2=
1.2 have been above maximal clearance a2=1.18 between the first reflection site 601 so that no matter first reflection site 601 and second
How reflection site 602 arranges, and can all have intersection, cause region colour cast problem.The present embodiment considers output light
Uniformity requirements and fluorescent material in and unnecessary light energy requirement, it is proposed that a kind of new light guide plate reflection stipple pattern and
Arrangement mode.Referring in particular to the present embodiment.
The present embodiment side entering type light source 20 is blue light, and when blue light is sent by side entering type light source 20, blue light is via incidence surface 101
Into after the inside of light guide plate 10, then it is irradiated on reflecting surface 102, reflecting surface 102 is disposed with a large amount of dot areas, when light irradiation
When on to each site, it may occur that reflection, and reflected light can be scattered toward all angles, wherein, blue ray is irradiated to fluorescence
Color of light corresponding with fluorescent material color can be produced when on powder, and neutralizes part blue light.Correspondence blue-light source in the present embodiment
The fluorescent material color of setting is the mixing of sodium yellow or feux rouges and green glow, therefore, and the light through the back reflection of fluorescent material 1023 is comprising surplus
After the mixed white light of remaining blue light and blue light and gold-tinted, or blue light and feux rouges, the mixing of green glow, and remaining blu-ray reflection
Blue light, the light after being reflected through site is incided on the exiting surface of light guide plate 10, forms the light source of uniformly light-emitting, and incidence enters film
Piece 30.Containing amount of green color point and red quantum dot in diaphragm 30, it can be inspired when blue ray is irradiated to green quantum dot green
Light, and go out the blue light illumination of diaphragm to display panel 40 with fractional transmission；Blue ray can swash when being irradiated to red quantum dot
Send feux rouges, and go out the blue light illumination of diaphragm to display panel 40 with fractional transmission, and the blueness of quanta point material outgoing
Light, red light and green light are mixed, and when the blue light of high-purity, red light and green light equivalent are synthesized, can be mixed into
White light, the white light that thus three primary colors are synthesized has higher purity, can improve the red green blue tricolor that display panel 40 is exported
Half-wave it is wide, reduce display panel 40 export trichromatic spectra overlapping scope, so allow the color of red green blue tricolor pure
Degree is improved, so as to realize that the high image quality of display panel 40, wide colour gamut are shown.
Specifically, in the present embodiment, when incident ray incides adjacent several sites, each site can produce difference
The scattering light of angle, the scattering light of different sites is overlapped in certain angular range, due to entering to inject light guide plate
The blue light of 10 edges is sodium yellow by yellow fluorescent powder sorption enhanced, or is turned by red fluorescence powder and green emitting phosphor
Red light and green light are turned to, and then sodium yellow is mixed to form white light with blue light, or be mixed to form with red light and green light
White light, thus reduces fringe region blu-ray reflection to the intensity of exiting surface, and enter diaphragm 30.Blue light is entered after diaphragm
Change dress into RGB three kinds of light, redgreenblue light can mix in common overlap-add region and form white light, formed
The white light source of display panel 40.
Further, as shown in figure 3, entering the curve of light distribution figure of module for incidence, it can be seen that light guide plate
There is stronger blue light in 10 exiting surface fringe regions, pay the utmost attention to intermediate region and be converted into white light, then relative to centre position
Increase the design that fluorescent material eliminates blue side on the fringe region of 10 reflecting surface of light guide plate 102.Design side in the present embodiment
The implementation steps of case are as follows：
Reference picture 7, it is considered to cost factor and processing technology requirement, carries out the setting of pattern on the reflecting surface 102 of light guide plate 10
When, the setting of the second reflector space 1022 is carried out for the first time, can be specifically in depression by laser or hot pressing, or pass through silk
Net mode of printing forms second reflector space 1022, for the reflection of side entering type light source 20, and is arranged on monoblock light guide plate
On 10 reflecting surface 102, while the multiple first reflection sites 1021 being intervally arranged will be formed.Second for eliminating surrounding
Turn blue problem, on reflecting surface 102 at least an edge area, fluorescence is provided with least part of first reflection site 1021
Powder 1023, and fluorescent material 1023 is arranged on the first reflection site 1021, moreover, fluorescent material 1023 is yellow fluorescent powder or red
The mixing of color fluorescent material and green emitting phosphor, the purpose of blue side phenomenon is eliminated for realizing.
Further, in order to improve the utilization rate and optical effect of reflecting surface 102, the first reflection site that interval is laid
1021 arrangement mode, which is that the first reflection site 1021 is embarked on journey, to align and is intervally arranged on reflecting surface 102；Or first reflector net
Point 1021 is into column alignment and is intervally arranged on reflecting surface 102.
Further, in the present embodiment Fig. 7 first reflection site 1021 for circle, circle first reflect site 1021 by
The second reflector space 1022 being disposed thereon is surrounded, and the first reflection site 1021 in the present invention also includes oval and positive six
Side shape, the art professional can be according to technological requirement and consideration cost factor come the specifically chosen first reflection site 1021
Shape.
Further, because diaphragm 30 is subject at fringe region blue light illumination is reduced, thus feux rouges and green color components subtract
It is few, so that cause mixing point color partially blue, and the incidence angle of the light at the fringe region of light guide plate 10 is relatively small, light
Intensity is higher than middle position light intensity, and light can not meet total reflection condition, and some light can be transmitted away, forms blue
Side；Bigger further away from marginal position incident angle, light can meet total reflection, and transmitted ray is relatively small, be less prone to indigo plant
Side phenomenon.Therefore, when being configured fluorescent material 1023, the size of fluorescent material 1023 away from the fringe region of light guide plate 10 is less than
Close to the size of fluorescent material 1023 of the fringe region of light guide plate 10, i.e., with more at fringe region on light guide plate 10
The ink of fluorescent material 1023 go neutralize blue light, further away from fringe region, it is necessary to the ink of fluorescent material 1023 it is relatively fewer, fluorescent material
The design of 1023 ink is the descending arrangement of the area of fluorescent material 1023 from fringe region toward intermediate region, i.e., first is anti-
Penetrate the size of fluorescent material 1023 away from edge in site 1021 and be less than the size of fluorescent material 1023 close to edge.
Further, in order that fluorescent material site 1023 preferably plays reflection and neutralizes the purpose of blue light, fluorescent material
1023 are mixed with scattering particles, and are formed by ink printing；Second reflector space 1022 forms recessed by laser or hot pressing
Fall into, or second reflector space 1022 is formed by screen printing mode.
By backlight module proposed by the present invention, a kind of new reflection stipple pattern of light guide plate 10 and arrangement side are devised
Formula, effectively eliminates blue side phenomenon, compared with prior art, and the present invention sets spaced misaligned on reflecting surface 102
The first reflection reflector space 1022 of site 1021 and second, the first reflection site 1021 is used to set fluorescent material 1023 to eliminate blue side
Phenomenon, the second reflector space 1022 is used to set optics site to realize the reflection to side entering type light source 20, and fluorescent material
1023 are arranged at least edge area of reflecting surface 102, efficiently avoid both overlap, are arranged on marginal zone
Fluorescent material 1023 on domain is by converting incident blue light and mixed formation white light, so that it is blue to weaken fringe region portions incident
Light, has effectively eliminated blue side phenomenon, the problem of it also avoid region colour cast, and when designing fluorescent material 1023, by its by
Fringe region passes through the reasonable Arrangement area of fluorescent material 1023 corresponding with blue light strength toward the descending arrangement in intermediate region site
Size, has reached the purpose for eliminating blue side phenomenon and avoiding region colour cast.
Finally it should be noted that：Various embodiments above is only to illustrate the technical scheme in the present invention, rather than its limitations；
Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：Its
The technical scheme described in foregoing embodiments can still be modified, or to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention skill
The scope of art scheme.
Claims (10)
1. a kind of backlight module, including light guide plate and side entering type light source, it is characterised in that：
The light guide plate includes reflecting surface and the light incident sides vertical with the reflecting surface；
On the reflecting surface include interval lay it is multiple first reflection sites, and by described first reflection site border with
Second reflector space of exterior domain formation；
On the reflecting surface at least an edge area, fluorescent material is provided with least part of first reflection site,
And the fluorescent material is arranged in the first reflection site；
And, the side entering type light source is arranged on the side of the light incident sides, with realize light source emit beam from it is described enter light
Side is injected in the light guide plate.
2. a kind of backlight module according to claim 1, it is characterised in that embark on journey between alignment simultaneously the first reflection site
Every being arranged on the reflecting surface；Or the first reflection site is alignd and is intervally arranged on the reflecting surface in column.
3. a kind of backlight module according to claim 1, it is characterised in that the shape of the first reflection site includes circle
Shape, ellipse or regular hexagon.
4. a kind of backlight module according to claim 1, it is characterised in that in the first reflection site remote edge
The area of the fluorescent material is less than the size of the fluorescent material close to edge.
5. a kind of backlight module according to claim 1, it is characterised in that the fluorescent material is mixed with scattering particles, and
Formed by ink printing.
6. a kind of backlight module according to claim 1, it is characterised in that second reflector space passes through laser
Or hot pressing is in depression, or second reflector space formed by screen printing mode.
7. a kind of backlight module according to claim 1, it is characterised in that the side entering type light source is blue-light source, institute
State the mixing that fluorescent material is set to yellow fluorescent powder or red fluorescence powder and green emitting phosphor.
8. a kind of backlight module according to claim 1, it is characterised in that also including diaphragm, the diaphragm includes quantum
Point material and the top for being arranged on the light guide plate exiting surface.
9. a kind of display device, it is characterised in that the display device includes the backlight according to claim any one of 1-8
Module.
10. a kind of display device according to claim 9, it is characterised in that also include：Display panel, frame, the back of the body
Optical mode group is arranged in the frame with the display panel, and the display panel is arranged on the top of the backlight module.
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| CN201710493068.1A CN107327747A (en) | 2017-06-26 | 2017-06-26 | A kind of backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710493068.1A CN107327747A (en) | 2017-06-26 | 2017-06-26 | A kind of backlight module and display device |
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Family
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| CN201710493068.1A Pending CN107327747A (en) | 2017-06-26 | 2017-06-26 | A kind of backlight module and display device |
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| CN108845386A (en) * | 2018-08-09 | 2018-11-20 | 京东方科技集团股份有限公司 | Light guide plate and its manufacturing method, backlight |
| CN108873153A (en) * | 2018-07-18 | 2018-11-23 | 福州大学 | Side entrance back module based on quantum dot body light guide plate goes out light control method |
| CN113835267A (en) * | 2021-09-29 | 2021-12-24 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN114326205A (en) * | 2021-12-07 | 2022-04-12 | 广东中强精英电子科技有限公司 | Backlight module and display device |
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| CN115508923A (en) * | 2022-09-21 | 2022-12-23 | 歌尔光学科技有限公司 | Fly-eye lens, projection illumination light path and projection device |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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Application publication date: 20171107 |