CN108518612A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN108518612A CN108518612A CN201810336279.9A CN201810336279A CN108518612A CN 108518612 A CN108518612 A CN 108518612A CN 201810336279 A CN201810336279 A CN 201810336279A CN 108518612 A CN108518612 A CN 108518612A
- Authority
- CN
- China
- Prior art keywords
- light guide
- guide plate
- site
- fluorescent powder
- light
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 claims abstract description 62
- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 238000009792 diffusion process Methods 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005284 excitation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 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 1
- 241001062009 Indigofera Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003595 spectral effect Effects 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
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
-
- 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
- F21V7/00—Reflectors for light sources
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of light guide plates, it includes matrix, there is the upper and lower surface being oppositely arranged on matrix, light-emitting surface of the upper surface as matrix, it is provided with ink site on lower surface, fluorescent powder site, ink site and fluorescent powder site stagger setting are provided on upper surface, fluorescent powder is both provided on ink site and fluorescent powder site, fluorescent powder excites for blue light.Light guide plate provided by the invention, exciting light are projected by the upper surface of matrix via after multiple reflections, ensure that exciting light can fully be excited by fluorescent powder, so that luminescent chromaticity is uniform, improve light guide effect.The present invention also provides a kind of backlight modules with the light guide plate.
Description
Technical field
The present invention relates to field of backlights, and in particular, to a kind of light guide plate and backlight module.
Background technology
Main component of the planar lightguide as light conduction in backlight module, light guide effect determines irradiant
Uniformity coefficient and level of comfort.In general, light guide plate is acrylic material, but because its intensity is relatively low, it is past when being used as light guide plate
It is past thicker, it is difficult to meet the lightening process requirements of backlight module, in order to solve this problem, the light guide plate of acrylic material
The glass material light guide plate gradually high by intensity, thickness is thin replaces, but glass light guide plate is serious to spectral absorption, causes to shine
Coloration is uneven, and light guide effect is bad.
Invention content
The technical problem to be solved by the present invention is to：In order to overcome the above-mentioned problems in the prior art, one is now provided
Kind luminescent chromaticity is uniform, light guide effect good light guide plate and backlight module.
The technical solution adopted by the present invention to solve the technical problems is：A kind of light guide plate, the light guide plate include matrix,
There is the upper and lower surface being oppositely arranged, light-emitting surface of the upper surface as described matrix, under described in described matrix
It is provided with ink site on surface, fluorescent powder site, the ink site and the fluorescent powder net are provided on the upper surface
Fluorescent powder is both provided on point stagger setting, the ink site and the fluorescent powder site, the fluorescent powder excites for blue light.
Further, dielectric layer is provided on the upper surface, the fluorescent powder site is arranged on the dielectric layer, institute
The refractive index for stating dielectric layer is less than the refractive index of described matrix and the refractive index more than air.
Further, the size of the fluorescent powder site is less than the size of the ink site.
Further, the ink site and the fluorescent powder site are protrusion or groove.
Further, described matrix is glass plate.
Further, the fluorescent powder site is shifted to install with the ink site.
Further, also there is one side in described matrix, the side be located at the upper surface and the lower surface it
Between, the side is as incidence surface.
Further, the fluorescent powder is yellow fluorescent powder, or, the yellow fluorescent powder and red fluorescence powder of doping, or, mixing
Miscellaneous green emitting phosphor and red fluorescence powder.
A kind of backlight module, the backlight module include aforementioned any one of them light guide plate.
Further, the backlight module further include be located at the light guide plate below reflecting plate, be located at the light guide plate
The diffusion component of top and blue led light source positioned at the light guide plate side, the diffusion component include prismatic lens and
It is located at the first diffusion sheet and the second diffusion sheet of upper and lower two side of the prismatic lens, first diffusion sheet is located at the rib
Side of the eyeglass far from the light guide plate.
The beneficial effects of the invention are as follows：Light guide plate or backlight module provided by the invention, after exciting light is via multiple reflections
It is projected by the upper surface of matrix, ensure that exciting light can fully be excited by fluorescent powder, so that luminescent chromaticity is uniform, improved
Light guide effect.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the backlight module of the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the backlight module of the embodiment of the present invention two.
In figure：10, light guide plate, 11, matrix, 101, upper surface, 102, lower surface, 104, ink site, 105, fluorescent powder
Site, 106, fluorescent powder, 107, dielectric layer, 20, reflecting plate, 30, diffusion component, 31, prismatic lens, the 32, first diffusion sheet, 33,
Second diffusion sheet, 40, blue led light source.
Specific implementation mode
Presently in connection with attached drawing, the present invention is described in detail.This figure is the schematic diagram of simplification, is only illustrated in a schematic way
The basic structure of the present invention, therefore it only shows the composition relevant to the invention.
Embodiment one
Referring to Fig. 1, the embodiment of the present invention one provides a kind of backlight module, which includes light guide plate 10, position
Reflecting plate 20, the diffusion component 30 above light guide plate 10 and the indigo plant positioned at 10 side of light guide plate in 10 lower section of light guide plate
Color LED light source 40.In use, the light that blue led light source 40 is sent out, is penetrated via after light guide plate 10 by the upper surface of light guide plate 10
Go out, is projected eventually by diffusion component 30.
Specifically, light guide plate 10 includes matrix 11, and matrix 11 is a glass plate.There is upper surface 101, following table on matrix 11
Face 102 and side 103, wherein upper surface 101 is oppositely arranged with lower surface 102, and side 103 is located at upper surface 101 and following table
Between face 102, and incidence surface of the side 103 as matrix 11, light-emitting surface of the upper surface 101 as matrix 11.
In present embodiment, it is provided with ink site 104 on lower surface 102, fluorescent powder site is provided on upper surface 101
105, fluorescent powder 106 is both provided on ink site 104 and fluorescent powder site 105.
Specifically, ink site 104 is protrusion of the projection on the lower surface of matrix 11 102, and fluorescent powder site 105 is convex
The protrusion being located on the upper surface 101 of matrix 11.It is to be appreciated that ink site 104 can also be recessed under matrix 11
Groove on surface 102, fluorescent powder site 105 can also be the recessed groove on the upper surface of matrix 11 101, do not make herein
Limitation.
Fluorescent powder 106 excites for blue light, and fluorescent powder 106 is yellow fluorescent powder.It is to be appreciated that in other unshowned realities
Apply in mode, fluorescent powder 106 can also be doping yellow fluorescent powder and red fluorescence powder, or, doping green emitting phosphor and
Red fluorescence powder.
Blue led light source 40 is located at the side of the side 103 of matrix 11, and the luminous axis of blue led light source 40 is located at
Between the upper surface 101 and lower surface 102 of matrix 11.When blue led light source 40 injects blue via side 103 into matrix 11
When exciting light, exciting light occur on the ink site 104 of matrix 11 reflect and reflect, not with the fluorescence on ink site 104
It is still blue light after excitation anaclasis and reflection that powder 106 contacts, what is contacted with the fluorescent powder 106 on ink site 104 swashs
It shines and turns yellow light, when above-mentioned blue light is projected from the upper surface of matrix 11 101 with sodium yellow, two kinds of light mixing are just
It is projected from upper surface 101 and obtains white light.
In the above process, the blue excitation light not contacted with the fluorescent powder 106 on ink site 104, through ink site
104 when reflecting the upper surface 101 of directive matrix 11 in turn, it is possible to simultaneously quilt can be contacted with the fluorescent powder 106 on upper surface 101
Fluorescent powder site 105 is reflected and the lower surface 102 of directive matrix 11, is then connect again with the fluorescent powder 106 on ink site 104
It touches and is reflected by ink site 104, finally so that blue excitation light is excited and turns yellow and via the upper surface of matrix 11 101
It projects, white light is obtained after being mixed with blue excitation light.Therefore, blue excitation light has very big probability in 11 communication process of matrix
Multiple reflections occur, so that the light projected is more uniform, light guide effect is good.
In addition, in present embodiment, ink site 104 and fluorescent powder site 105 are protrusion, the hemispherical knot of the protrusion
Structure, and the size of fluorescent powder site 105 is less than the size of ink site 104, and then ensure that exciting light can be more by matrix
11 upper surface 101 is projected, and ensure that amount of light.Meanwhile fluorescent powder site 105 is shifted to install with ink site 104, is avoided
Exciting light reflects between two fluorescent powder sites 105 being oppositely arranged and ink site 104 and can not be from upper surface 101 repeatedly
The case where injection.It is to be appreciated that in other unshowned embodiments, ink site 104 and fluorescent powder site 105 are also
It can be groove, not be restricted herein.
Diffusion component 30 is including prismatic lens 31, the first diffusion sheet 32 above prismatic lens 31 and is located at prismatic lens 31
Second diffusion sheet 33 of lower section, when exciting light is projected by the lower surface 102 of matrix 11, due to the reflex of expelling plate 20,
Exciting light can be projected finally by upper surface 101, avoided exciting light and scattered and disappeared, ensure that the intensity for projecting white light, and in prism
Planar light is formed under the action of piece 31, the first diffusion sheet 32 and the second diffusion sheet 33.
Light guide plate 10 or backlight module provided by the invention, exciting light via after multiple reflections by the upper surface of matrix 11
102 project, and ensure that exciting light can fully be excited by fluorescent powder 106, so that luminescent chromaticity is uniform, improve guide-lighting effect
Fruit.
Embodiment two
Referring to Fig. 2, light guide plate provided by Embodiment 2 of the present invention 10 and embodiment once the difference of light guide plate 10 exist
In：Dielectric layer 107 is provided on the upper surface 102 of matrix 11, fluorescent powder site 105 is arranged in the upper surface of dielectric layer 107, is situated between
The refractive index of matter layer 107 is less than the refractive index of matrix 11 and the refractive index more than air.In present embodiment, dielectric layer 107 is
Oil film.As a result, when exciting light is projected by the upper surface 102 of matrix 11 and dielectric layer 107 successively, it can ensure light as far as possible
Line is projected by the upper surface of dielectric layer 107 so that light is more concentrated.
The embodiment of the present invention two additionally provides a kind of backlight module with the light guide plate 10, other knots in backlight module
Structure is identical as embodiment one, and details are not described herein again.
It is enlightenment, through the above description, relevant staff with above-mentioned desirable embodiment according to the present invention
Various changes and amendments can be carried out in without departing from the scope of the present invention completely.The technical scope of this invention is not
The content being confined on specification, it is necessary to which its technical scope is determined according to right.
Claims (10)
1. a kind of light guide plate, it is characterised in that：The light guide plate includes matrix, has the upper surface being oppositely arranged in described matrix
And lower surface, light-emitting surface of the upper surface as described matrix are provided with ink site, the upper surface on the lower surface
On be provided with fluorescent powder site, the ink site and fluorescent powder site stagger setting, the ink site with it is described glimmering
Fluorescent powder is both provided on light powder site, the fluorescent powder excites for blue light.
2. light guide plate as described in claim 1, it is characterised in that：Dielectric layer, the fluorescent powder are provided on the upper surface
Site is arranged on the dielectric layer, and the refractive index of the dielectric layer is less than the refractive index of described matrix and the refraction more than air
Rate.
3. light guide plate as described in claim 1, it is characterised in that：The size of the fluorescent powder site is less than the ink site
Size.
4. light guide plate as described in claim 1, it is characterised in that：The ink site and the fluorescent powder site are protrusion
Or groove.
5. light guide plate as described in claim 1, it is characterised in that：Described matrix is glass plate.
6. light guide plate as described in claim 1, it is characterised in that：The fluorescent powder site is set with ink site dislocation
It sets.
7. light guide plate as claimed in any one of claims 1 to 6, it is characterised in that：Also there is one side in described matrix, it is described
Side is between the upper surface and the lower surface, and the side is as incidence surface.
8. light guide plate as claimed in claim 7, it is characterised in that：The fluorescent powder is yellow fluorescent powder, or, the yellow of doping
Fluorescent powder and red fluorescence powder, or, the green emitting phosphor and red fluorescence powder of doping.
9. a kind of backlight module, it is characterised in that：The backlight module includes claim 1-8 any one of them light guide plates.
10. backlight module as claimed in claim 9, it is characterised in that：The backlight module further includes being located at the light guide plate
The reflecting plate of lower section, the diffusion component above the light guide plate and the blue led light source positioned at the light guide plate side,
The diffusion component includes prismatic lens and the first diffusion sheet for being located at upper and lower two side of the prismatic lens and the second diffusion
Piece, first diffusion sheet are located at side of the prismatic lens far from the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336279.9A CN108518612B (en) | 2018-04-16 | 2018-04-16 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336279.9A CN108518612B (en) | 2018-04-16 | 2018-04-16 | Light guide plate and backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108518612A true CN108518612A (en) | 2018-09-11 |
| CN108518612B CN108518612B (en) | 2024-06-14 |
Family
ID=63429360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336279.9A Active CN108518612B (en) | 2018-04-16 | 2018-04-16 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518612B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108518612B (en) | 2024-06-14 |
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