CN209486340U - A kind of light guide plate and backlight module - Google Patents
A kind of light guide plate and backlight module Download PDFInfo
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- CN209486340U CN209486340U CN201822142921.8U CN201822142921U CN209486340U CN 209486340 U CN209486340 U CN 209486340U CN 201822142921 U CN201822142921 U CN 201822142921U CN 209486340 U CN209486340 U CN 209486340U
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- light
- side face
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- light emission
- guide
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Abstract
The utility model discloses a kind of light guide plate and backlight modules, for field of display technology, light guide plate includes guide-lighting matrix, guide-lighting matrix has incidence surface and light emission side face, light emission side face is equipped with total reflection micro-structure, and total reflection micro-structure can make to be totally reflected back in guide-lighting matrix after the propagation of guide-lighting matrix in the light that light emission side face is emitted from the light of the incidence surface incidence.Backlight module includes above-mentioned light guide plate.Light emission side face is equipped with total reflection micro-structure, total reflection micro-structure can make to be totally reflected back in guide-lighting matrix after the propagation of guide-lighting matrix in the light that light emission side face is emitted from the light of the incidence surface incidence, it can be obviously improved " bright border " visual effect problem near display light emission side face, improve the utilization rate of light, and side instead (i.e. the reflector plate of side attaching) can also be removed, achieve the effect that reduce manpower and material resources cost.
Description
Technical field
The utility model is used for field of display technology, more particularly to a kind of light guide plate and backlight module.
Background technique
The light that light source is emitted in backlight module in the prior art has bigger a part of light meeting after conducting through the light guide plate
It is slatterned by three light emission side faces (by taking rectangular light guide plate as an example) outgoing of light guide plate, if anti-in the attached side of light emission side face paste
(i.e. reflector plate), the then light being emitted can be propagated by counter be reflected back in light guide plate in side, but the mostly meeting of these light for being reflected back toward
The reflection or outgoing of face near zone progress again are concentrated on, leads to " bright border " visual effect problem, and will lead to guide-lighting board group again
The problem of filling the cost increase of process manpower and material resources,
Utility model content
The purpose of this utility model is that at least solving one of the technical problems existing in the prior art, a kind of leaded light is provided
Plate and backlight module, " bright border " the visual effect problem that can be obviously improved near display light emission side face, improve the utilization rate of light,
And side instead (i.e. the reflector plate of side attaching) can also be removed, achieve the effect that reduce manpower and material resources cost.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of light guide plate, including guide-lighting matrix, it leads
Light matrix has incidence surface and light emission side face, and light emission side face is equipped with total reflection micro-structure, and total reflection micro-structure can make from institute
The light for stating incidence surface incidence is totally reflected back in guide-lighting matrix after the propagation of guide-lighting matrix in the light of light emission side face outgoing.
It is further used as the improvement of technical solutions of the utility model, total reflection micro-structure includes pyramid array, pyramid array
Including several monomer pyramids, the bottom surface of each monomer pyramid is overlapped or is bonded with light emission side face.
It is further used as the improvement of technical solutions of the utility model, monomer pyramid includes orthopyramid.
It is further used as the improvement of technical solutions of the utility model, monomer pyramid includes triangular pyramid, the sides adjacent of triangular pyramid
Face angle is 90 °, and the side of triangular pyramid and the angle of bottom surface are 45 °.
It is further used as the improvement of technical solutions of the utility model, monomer pyramid is embedded in the light emission side of guide-lighting matrix
Face.
It is further used as the improvement of technical solutions of the utility model, the incidence surface of guide-lighting matrix is side incidence surface.
A kind of backlight module, including light guide plate described in any one of above embodiments.
A technical solution in above-mentioned technical proposal at least has the following advantages that or one of beneficial effect: on light emission side face
Equipped with total reflection micro-structure, total reflection micro-structure can make from the light of incidence surface incidence after guide-lighting matrix is propagated
The light of light emission side face outgoing is totally reflected back in guide-lighting matrix, " bright border " that can be obviously improved near display light emission side face
Visual effect problem improves the utilization rate of light, and it is anti-(i.e. side attach reflector plate) to remove side, reach reduce manpower and material resources at
This effect.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the utility model embodiment partial enlargement figure structure schematic representation；
Fig. 3 is the utility model embodiment monomer pyramidal structure schematic diagram；
Fig. 4 is the utility model embodiment monomer pyramid light path schematic diagram.
Specific embodiment
This part will be described in specific embodiment of the utility model, and the preferred embodiment of the utility model is in the accompanying drawings
It shows, the effect of attached drawing is the description with figure supplementary explanation book word segment, enables a person to intuitively, visually understand originally
The each technical characteristic and overall technical architecture of utility model, but it should not be understood as the limit to scope of protection of the utility model
System.
It is with structure shown in FIG. 1 when if there is being described to direction (upper and lower, left and right, before and after) in the utility model
For with reference to description, but it is merely for convenience of description the technical solution of the utility model, rather than the skill of indication or suggestion meaning
Art feature must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In the utility model, " several " are meant that one or more, and the meaning of " plurality " is two or more, " big
In ", " being less than ", " being more than " etc. be interpreted as not including this number；" more than ", " following ", " within " etc. be interpreted as including this number.At this
In the description of utility model, if there is being described to " first ", " second " be only used for for the purpose of distinguishing technical characteristic, and cannot understand
For indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic or implicitly indicate indicated
The precedence relationship of technical characteristic.
In the utility model, unless otherwise restricted clearly, the words such as " setting ", " installation ", " connection " should do broad sense reason
Solution, for example, it may be connected directly, it can also be indirectly connected through an intermediary；It may be a fixed connection, be also possible to removable
Connection is unloaded, can also be integrated molding；It can be mechanical connection, be also possible to be electrically connected or can communicate with each other；It can be two
The interaction relationship of connection or two elements inside a element.Skilled artisan can be with combination technology scheme
Particular content rationally determine the concrete meaning of above-mentioned word in the present invention.
The embodiments of the present invention provide a kind of light guide plate, including guide-lighting matrix 100, guide-lighting matrix 100 have into
Smooth surface 110 and light emission side face, all or part of light emission side face are equipped with total reflection micro-structure, and total reflection micro-structure can make from institute
The light for stating incidence surface incidence is totally reflected back to guide-lighting matrix in the light of light emission side face outgoing after the propagation of guide-lighting matrix 100
It is interior.
Referring to Fig. 1, one embodiment of the utility model is specifically disclosed, light guide plate includes guide-lighting matrix 100, described
Guide-lighting matrix includes incidence surface 110 and light emission side face 120, light emission side face 130, light emission side face 140, the light emission side face 120,
Light emission side face 130, light emission side face 140 are provided with total reflection micro-structure, for making in a predeterminable area internal reflection to light emission side face
120, light emission side face 130, light emission side face 140 light can occur to be totally reflected and be back in the total reflection micro-structure it is described
Inside guide-lighting matrix 100.
Light emission side face is equipped with total reflection micro-structure, and total reflection micro-structure can make to pass through from the light of the incidence surface incidence
It crosses the light after guide-lighting matrix is propagated in the outgoing of light emission side face to be totally reflected back in guide-lighting matrix, display can be obviously improved and gone out
" bright border " visual effect problem near light side, improves the utilization rate of light, and can also remove side instead (i.e. the reflector plate of side attaching),
Achieve the effect that reduce manpower and material resources cost.
In a certain or some embodiments, total reflection micro-structure includes the combination of pit or protrusion or pit and protrusion, is made
Be it is preferred, total reflection micro-structure includes pyramid array, and pyramid array includes several monomer pyramids, the bottom surface of each monomer pyramid with go out
Light side is overlapped or fitting.
In a certain or some embodiments, monomer pyramid includes oblique pyramid and/or orthopyramid, preferably, monomer pyramid
Including orthopyramid.
Referring to fig. 2, Fig. 3, further, monomer pyramid include triangular pyramid, and there are three phases for tool on each triangular pyramid 170
Fully reflecting surface 171 at an angle to each other, fully reflecting surface 172, fully reflecting surface 173, wherein the fully reflecting surface 171 and the total reflection
Face 172 has angle α, and the fully reflecting surface 171 is with the light emission side face 120, light emission side face 130 or light emission side face 140 at one
Angle α '；The fully reflecting surface 172 and the fully reflecting surface 173 have angle β, the fully reflecting surface 172 and the light emission side
Face 120, light emission side face 130 or light emission side face 140 have angle β '；The fully reflecting surface 173 and the fully reflecting surface 171 are at one
Angle γ, the fully reflecting surface 173 and the light emission side face 120, light emission side face 130 or light emission side face 140 have angle γ '.
As Figure 1 and Figure 4, light source 200 includes PCB210 and LED lamp bead 220, when the light of LED lamp bead 220 is from light-emitting surface
230 when issuing and be incident from the incidence surface of light guide plate 110, and light is propagated in guide-lighting matrix 100, when light is to light emission side face
120, when light emission side face 130, light emission side face 140 are incident, light within a certain area is because of the fully reflecting surface with triangular pyramid 170
171, the incident angle that fully reflecting surface 172, fully reflecting surface 173 are formed meets total reflection condition, successively by three of triangular pyramid 170
Fully reflecting surface is totally reflected and is returned in guide-lighting matrix 100.In the above scheme, the fully reflecting surface 171, fully reflecting surface
172, fully reflecting surface 173 be preferable to provide for can by directive light side 120 in guide-lighting matrix 100, light emission side face 130, go out light
Most of light of side 140 carries out sequentially forming total reflection condition in fully reflecting surface 171, fully reflecting surface 172, fully reflecting surface 173,
Light utilization efficiency is improved with big degree.
Further, the adjacent side angle of triangular pyramid is 90 °, and the side of triangular pyramid and the angle of bottom surface are 45 °.Upper
State in scheme, for the angle α, the angle β, the angle γ, the angle α ', the angle β ' and the angle
γ ' can be adjusted according to improved brightness uniformity and visual effect required in practical application, by adjusting angle energy
The light being totally reflected back is set to be reflected into specified region.
It should be understood that in practical applications, the triangular pyramid 170 is also possible to the trigone using other tilt angles
Cone.This technology application principle be right-angle prismatic cone have will be anti-three times from the light process of plane of incidence any direction incidence
It penetrates, emergent light will be parallel with incident light, the light then backtracking at right-angle prismatic cone center is incident to, when right-angle prismatic cone passes through it
When the reflecting surface normal rotation on vertex, emergent ray is constant.
In a certain or some embodiments, monomer pyramid is assembled after being integrally formed or be separately formed with guide-lighting matrix and is connect,
Preferably, monomer pyramid is embedded in the light emission side face of guide-lighting matrix 100.
In a certain or some embodiments, guide-lighting matrix 100 is to carry on the back into formula or side entering type, preferably, guide-lighting matrix 100
Incidence surface be side incidence surface.
A kind of backlight module, including light guide plate described in any one of above embodiments.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of utility model spirit, these equivalent variation or replacement are all contained in the application
In claim limited range.
Claims (7)
1. a kind of light guide plate, it is characterised in that: including guide-lighting matrix, guide-lighting matrix has incidence surface and light emission side face, light emission side
Face is equipped with total reflection micro-structure, and total reflection micro-structure can make to propagate from the light of the incidence surface incidence by guide-lighting matrix
It is totally reflected back in guide-lighting matrix in the light of light emission side face outgoing afterwards.
2. light guide plate according to claim 1, it is characterised in that: total reflection micro-structure includes pyramid array, pyramid array
Including several monomer pyramids, the bottom surface of each monomer pyramid is overlapped or is bonded with light emission side face.
3. light guide plate according to claim 2, it is characterised in that: monomer pyramid includes orthopyramid.
4. light guide plate according to claim 3, it is characterised in that: monomer pyramid includes triangular pyramid, the sides adjacent of triangular pyramid
Face angle is 90 °, and the side of triangular pyramid and the angle of bottom surface are 45 °.
5. the light guide plate according to any one of claim 2~4, it is characterised in that: monomer pyramid is embedded in guide-lighting base
The light emission side face of body.
6. light guide plate according to any one of claims 1 to 4, it is characterised in that: the incidence surface of guide-lighting matrix enters for side
Smooth surface.
7. a kind of backlight module, it is characterised in that: including light guide plate according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142921.8U CN209486340U (en) | 2018-12-19 | 2018-12-19 | A kind of light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142921.8U CN209486340U (en) | 2018-12-19 | 2018-12-19 | A kind of light guide plate and backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN209486340U true CN209486340U (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822142921.8U Active CN209486340U (en) | 2018-12-19 | 2018-12-19 | A kind of light guide plate and backlight module |
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| Country | Link |
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| CN (1) | CN209486340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179769A (en) * | 2020-01-02 | 2020-05-19 | 京东方科技集团股份有限公司 | Display module |
-
2018
- 2018-12-19 CN CN201822142921.8U patent/CN209486340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179769A (en) * | 2020-01-02 | 2020-05-19 | 京东方科技集团股份有限公司 | Display module |
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