CN106647030A - Backlight module and liquid crystal displayer - Google Patents
Backlight module and liquid crystal displayer Download PDFInfo
- Publication number
- CN106647030A CN106647030A CN201611230273.0A CN201611230273A CN106647030A CN 106647030 A CN106647030 A CN 106647030A CN 201611230273 A CN201611230273 A CN 201611230273A CN 106647030 A CN106647030 A CN 106647030A
- Authority
- CN
- China
- Prior art keywords
- light guide
- plane
- sub
- guide plate
- backlight module
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
Abstract
The invention provides a backlight module and a liquid crystal displayer comprising same. The backlight module is a light guide plate formed by closely splicing a plurality of sub light guide plates to perform zone control local dimming on the liquid crystal displayer. By additionally arranging a protruding plate at the ends, close to a light source, of the sub light guide plates, the sub light guide plates different from sub light guide plates of the Z-shaped structure in the prior art are obtained. Meanwhile, a reflector plate is attached to the first end face, away from the light source, of the sub light guide plates, some light enters the protruding plate, uniform light emission at the positions of the protruding plate and the sub light guide plates is achieved, and the backlight module and the liquid crystal displayer with the good light emitting effect are obtained.
Description
Technical field
The present invention relates to the manufacture field of liquid crystal display, more particularly to a kind of backlight module and liquid crystal display.
Background technology
At present, zonal control local dimming is carried out to the liquid crystal display, so as to realize that high dynamic range images are accurate
Control light, is increasingly becoming the direction of industry technology development.In prior art, by the way that the light guide plate is divided into son one by one
Light guide plate, and light source is respectively provided with each sub- light guide plate, so as to realize the zonal control to the liquid crystal display.
At present, the mode that the connecting method of each sub- light guide plate is generally overlapped, the fundamental form of the sub- light guide plate
Shape is zigzag.But, the one end on the sub- light guide plate of the structure of this zigzag near light source can produce due to there is right-angle structure
Raw dark space, away from light source one end due to there is right angle to produce spray pattern.So that the backlight module to produce light uneven
Situation, affect liquid crystal display quality.
The content of the invention
The present invention provides a kind of backlight module and liquid crystal display, and that realizes the backlight module uniformly goes out light.
The backlight module includes that the backlight module includes many sub- light guide plates and relative with sub- light guide plate each described
Light source, the plurality of sub- light guide plate closely splices, and each described sub- light guide plate includes an exiting surface, is connected with the exiting surface
First end face and the second end face relative with the first end face, the second end face is provided with a flange, the flange bag
The first plane and second plane relative with first plane are included, first plane is located at same level with the exiting surface
Face, second plane forms L-shaped groove with the second end face, wherein, the light source relative to sub- light guide plate is located at corresponding
Sub- light guide plate L-shaped groove in, also, be sticked in the first end face and have reflector plate.
Wherein, set in plane relative with the exiting surface in second plane and the sub- light guide plate of the flange
There is site.
Wherein, the flange of another described sub- light guide plate adjacent with the sub- light guide plate of the first end face of sub- light guide plate described in
Fitted, and make the exiting surface of each sub- light guide plate be located at same level, realized the tight splicing of the sub- light guide plate.
Wherein, the backlight module also includes heat sink, and the light source is fixed on the heat sink, and each son is led
The flange of tabula rasa is respectively positioned on the top of the heat sink and the light source, and the flange is covered in the projection of vertical direction
The projection of the heat sink and the light source in vertical direction.
Wherein, the section of the vertical direction of the heat sink is L-shaped, including a stationary plane and is hung down with the stationary plane
The direct-connected block surface for connecing, the light source is fixed on the stationary plane of the heat sink, and the block surface is covered in described
The top of light source.
Wherein, the light source is LED lamp bar, and the LED lamp bar includes that the circuit board is fixed in circuit board and electrical connection
On LED.
Wherein, second plane is the horizontal plane parallel to first plane, or is in one with first plane
Determine the inclined plane of angle, when second plane is inclined plane, described in the inclined plane towards the sub- light guide plate light is gone out
Face.
The liquid crystal display includes above-mentioned backlight module.The backlight module of the present invention is by many sub- light guide plates
The light guide plate being closely spliced to form, realization carries out zonal control local dimming to the liquid crystal display.Also, by described
Sub- light guide plate increases the flange near one end of the light source, and does not change the structure away from described light source one end, so as to
Near the dark space that one end of the light source does not have trough with straight angle structure and produces, and there is no right angle product in the one end away from light source yet
Raw spray pattern.Therefore the generation of area pellucida and dark space is not had, having more uniformly go out light.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the back light module unit structure schematic diagram of better embodiment of the present invention；
Fig. 2 is the partial enlarged drawing of the II parts of backlight module described in Fig. 1.
Specific 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 the embodiment of whole.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.
Fig. 1 and Fig. 2 is referred to, the present invention provides a kind of backlight module 100 and the liquid crystal comprising the backlight module 100
Show device.The backlight module 100 includes many sub- light guide plates 10, multiple light sources 20, multiple heat sinks 30 and backboards 40.Multiple institutes
State sub- light guide plate 10 closely to splice.The light source 20 is fixed on the heat sink 30.The side of each sub- light guide plate 10
The light source 20 and the heat sink 30 are equipped with, the light source 20 is relative with the sub- light guide plate 10, so as to realize to described
Backlight module carries out zonal control.Each described sub- light guide plate 10 and the heat sink 30 are both secured on the backboard 40.
Each described sub- light guide plate 10 include an exiting surface 11, the first end face 12 being connected with the exiting surface 11 and with institute
State the relative second end face 13 of first end face 12.The second end face 13 is provided with a flange 14, in the present embodiment, the flange
14 obtain with the sub- light guide plate 10 making that is formed in one.Wherein, the flange 14 is located at the heat sink 30 and the light
The top in source 20, and the flange 14 covers the heat sink 30 and the light source 20 in vertical direction in the projection of vertical direction
Projection.Being sticked in the first end face 12 has reflector plate 18, and the reflector plate 18 is used to be emitted onto the reflector plate 18
Light portion be reflected into the flange 14, that realizes the flange 14 goes out light.
The flange 14 includes the first plane 15 and second plane 16 relative with first plane 15.Described first is flat
Face 15 is the exiting surface of the flange 14, i.e., described first plane 15 is located at same with the exiting surface 11 of the sub- light guide plate 10
A plane is formed in one horizontal plane and with the exiting surface 11 of the sub- light guide plate 10.Second plane 16 and the son
The second end face 13 of light guide plate 10 forms L-shaped groove 17.The heat sink 30 and the light source 20 are located at the L-shaped groove 17
It is interior, and there is certain gap between L-shaped groove 17, the luminous heat transfer for producing of the light source 20 is prevented to the light guide plate
On.
Second plane 16 is the horizontal plane parallel to first plane 15, and the reflector plate 18 is emitted onto described
Light portion on reflector plate 18 is reflexed in the flange 14.If it is understood that into the light in the flange 14
Deficiency, second plane 15 can also be set to the inclined plane with first plane 15 at an angle so that direction
The exiting surface of the sub- light guide plate that the inclined plane is located, makes the inclined plane be higher than away from one end of the first end face 12
Near one end of the first end face 12, make the pattern 14 thicker with the binding face of the sub- light guide plate 10, so that by
The reflector plate 18 is reflected into the light in the flange 14 to be increased.
Further, in second plane 16 and the sub- light guide plate 10 of the flange 14 with the phase of the exiting surface 11
To plane be provided with site (not shown), the site is the groove or projection of multiple arrays arrangements.By control
Arrange in the plane relative with the exiting surface 11 in the density of the site in second plane 16 and the sub- light guide plate 10
The site density, make on the sub- light guide plate 10 and on the flange 14 everywhere to go out luminous intensity identical, so as to realize
The backboard module 100 obtains the optimal effect for uniformly going out light.
The sub- light guide plate 10 can be fixed on the backboard 40 by modes such as stickers.Sub- light guide plate 10 described in one
The flange 14 of another described sub- light guide plate 10 adjacent with the sub- light guide plate 10 of the first end face 12 is fitted, i.e.,
Attaching is set to be located in the sub- light guide plate 10 and be somebody's turn to do with the reflector plate 18 of the first end face 12 of the sub- light guide plate 10
Between the flange 14 on the adjacent another sub- light guide plate of sub- light guide plate 10.And it is described and make the described of each sub- light guide plate 10
Exiting surface 11 is respectively positioned on same level, the tight splicing of each sub- light guide plate 10 is realized, by the sub- light guide plate and position
The splicing of the flange on the sub- light guide plate, forms the light guide plate of the backlight module 100, by the light guide plate,
That realizes the backlight module 100 uniformly goes out light.
In the present invention, the light source 20 is LED lamp bar.The LED lamp bar includes that institute is fixed in circuit board 21 and electrical connection
State the LED 22 on circuit board.
The heat sink 30 is aluminium extruded bar, and the section of its vertical direction is L-shaped.I.e. described heat sink 30 is solid including one
The block surface 32 determined face 31 and be connected at an angle with the stationary plane 31, so that the heat sink 30 is in vertical direction
Section forms L-shaped.In the present embodiment, the preferably block surface 32 is vertically connected at the stationary plane 31.The light source 20 leads to
Cross heat-conducting glue to be fixed on the stationary plane 31 of the heat sink 30, and the block surface 32 is covered in the upper of the light source 20
Side, blocks the light source 20 and directly projects to directly over it, it is ensured that the position of the flange 14 of the surface of the light source 20
Clear zone will not be formed due to the direct outgoing of a large amount of light, and then ensure the uniform in light emission of the light guide plate.Further, institute
Heat sink 30 is stated for the heat that the light source 20 is produced to be dispersed, prevents the heat that the light source 20 is produced from making the light guide plate
There is slight deformation and cause the uneven of light quality.Also, the connection sides such as the heat sink 30 is connected by screw, sticker
Formula is fixed on the backboard 40.
The backlight module 100 of the present invention is closely spliced by many sub- light guide plates 10, and guide-lighting in each described son
The side of plate 10 arranges light source 20, by the control respectively of the light source 20 to each sub- light guide plate 10, realizes including
The liquid crystal display of the backlight module 100 carries out zonal control and local dimming.Also, by the sub- light guide plate
10 increase the flange 14 near one end of the light source 20, and do not change the structure away from described light source one end, so as to lean on
The dark space that one end of the nearly light source 20 does not have trough with straight angle structure and produces, and there is no right angle product in the one end away from light source yet
Raw spray pattern.Therefore the generation of area pellucida and dark space is not had, having more uniformly go out light.Also, by guide-lighting in the son
The first end face 12 on plate 10 away from the light source 20 is sticked reflector plate 18, some light is entered in the flange 14,
And by the heat sink 30 block the light source 20 generation light be emitted directly toward in the flange 14, so as to control to enter institute
The light in flange 14 is stated, can be easily guide-lighting with the son to the light in the flange so as to pass through arranging for the site
Plate other light that go out everywhere are controlled, and that finally realizes the backlight module 100 uniformly goes out light.
Above disclosed is only a kind of preferred embodiment of the invention, can not limit the power of the present invention with this certainly
Sharp scope, one of ordinary skill in the art will appreciate that all or part of flow process of above-described embodiment is realized, and according to present invention power
Profit requires made equivalent variations, still falls within the covered scope of invention.
Claims (8)
1. a kind of backlight module, it is characterised in that including many sub- light guide plates and the light source relative with sub- light guide plate each described,
The plurality of sub- light guide plate closely splices, and each described sub- light guide plate includes an exiting surface, first be connected with the exiting surface
End face and the second end face relative with the first end face, the second end face is provided with a flange, and the flange includes first
Plane and second plane relative with first plane, first plane is located at same level, institute with the exiting surface
State the second plane and form L-shaped groove with the second end face, wherein, the light source relative with sub- light guide plate is led positioned at corresponding son
In the L-shaped groove of tabula rasa, also, it is sticked in the first end face and has reflector plate.
2. a kind of backlight module as claimed in claim 1, it is characterised in that second plane of the flange and the son
The plane relative with the exiting surface is provided with site on light guide plate.
3. a kind of backlight module as claimed in claim 1, it is characterised in that the first end face of sub- light guide plate described in one and the son
The flange of the adjacent another described sub- light guide plate of light guide plate is fitted, and makes the exiting surface of each sub- light guide plate positioned at same
Horizontal plane, realizes the tight splicing of the sub- light guide plate.
4. a kind of backlight module as claimed in claim 1, it is characterised in that the backlight module also includes heat sink, described
Light source is fixed on the heat sink, and the flange of each sub- light guide plate is respectively positioned on the heat sink and the light source
Top, and the flange covers the projection of the heat sink and the light source in vertical direction in the projection of vertical direction.
5. a kind of backlight module as claimed in claim 4, it is characterised in that the section of the vertical direction of the heat sink for
L-shaped, including a stationary plane and with stationary plane block surface connected vertically, the light source is fixed on the institute of the heat sink
State on stationary plane, and the block surface is covered in the top of the light source.
6. a kind of backlight module as claimed in claim 1, it is characterised in that the light source is LED lamp bar, the LED lamp bar
Including the LED that circuit board and electrical connection are fixed on the circuit board.
7. a kind of backlight module as claimed in claim 1, it is characterised in that second plane is flat parallel to described first
The horizontal plane in face, or the inclined plane with first plane at an angle, it is described when second plane is inclined plane
The exiting surface of the inclined plane towards inclined plane place sub- light guide plate.
8. a kind of liquid crystal display, it is characterised in that the liquid crystal display includes a kind of backlight mould described in claim 1-7
Group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611230273.0A CN106647030A (en) | 2016-12-27 | 2016-12-27 | Backlight module and liquid crystal displayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611230273.0A CN106647030A (en) | 2016-12-27 | 2016-12-27 | Backlight module and liquid crystal displayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106647030A true CN106647030A (en) | 2017-05-10 |
Family
ID=58831686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611230273.0A Pending CN106647030A (en) | 2016-12-27 | 2016-12-27 | Backlight module and liquid crystal displayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106647030A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942582A (en) * | 2017-11-22 | 2018-04-20 | 深圳市金立通信设备有限公司 | A kind of liquid crystal display device and backlight module |
| CN108761910A (en) * | 2018-05-28 | 2018-11-06 | 京东方科技集团股份有限公司 | Electronic equipment, display device, backlight module and its light source |
| CN113985654A (en) * | 2021-10-21 | 2022-01-28 | 合肥泰沃达智能装备有限公司 | Display device with controllable light guide plate |
| CN115980909A (en) * | 2023-03-22 | 2023-04-18 | 惠科股份有限公司 | Light emitting module and display device |
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| CN107942582A (en) * | 2017-11-22 | 2018-04-20 | 深圳市金立通信设备有限公司 | A kind of liquid crystal display device and backlight module |
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Application publication date: 20170510 |