CN106094095A - A kind of backlight module and liquid crystal display thereof - Google Patents
A kind of backlight module and liquid crystal display thereof Download PDFInfo
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- CN106094095A CN106094095A CN201610660626.4A CN201610660626A CN106094095A CN 106094095 A CN106094095 A CN 106094095A CN 201610660626 A CN201610660626 A CN 201610660626A CN 106094095 A CN106094095 A CN 106094095A
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- Prior art keywords
- light guide
- guide plate
- district
- backlight
- site
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Classifications
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- 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
- G02B6/0035—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
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- 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
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of backlight module and liquid crystal display thereof, described backlight module, including: multilamellar light guide plate, every layer of described light guide plate is all divided into multiple first backlight district, being provided with site in described first backlight district, the site on the two-layer light guide plate of arbitrary neighborhood is in being dislocatedly distributed；Being arranged at multiple rows of LED lamp bar of light guide plate side, often row's LED lamp bar may be contained within the side of corresponding light guide plate；Often row's LED lamp bar is all divided into multiple second backlight district, and the second backlight district and the first backlight district are just to setting；And for controlling the controller that described LED lamp bar is the most luminous.Use the present invention can be effectively improved the HDR effect of side entrance back module, solve the problem that side entrance back module of the prior art cannot realize multi partition local dimming；And the isolation of effective light can be realized, it is to avoid the light in the first adjacent backlight district interferes, and improves light-out effect further.
Description
Technical field
The present invention relates to field of liquid crystal, in particular a kind of backlight module and liquid crystal display thereof.
Background technology
At present, liquid crystal display HDR (high data rate, Highspeed Data Transmission Technology) technology is the most right owing to having
Ratio Du Genggao, image quality more preferably advantage, it is increasingly becoming the main flow in market.The subregion of liquid crystal module is the most, local dimming
The effect of (local dimming) is the best, and dynamic contrast is the highest, and image quality is more preferably.And introduce local dimming skill on a television set
Art, the most all can carry out multidomain treat-ment, a few Ke Deng mono-districts or Ke Deng mono-district to backlight of television, and mainboard is in real time according to image
The brightness algorithm of signal carries out Luminance Analysis to each region, and with the form of current value, result is passed through SPI(Serial
Peripheral Interface, Serial Peripheral Interface (SPI)) it is transferred to each district of backlight, thus reach to carry out the brightest to backlight
The purpose of degree regulation, the place showing as bright region brighter, dark is darker, thus improves dynamic contrast and realize energy-conservation.
Liquid crystal module mainly includes down straight aphototropism mode set and side entrance back module, down straight aphototropism mode set due to
The subregion of LED and the subregion of liquid-crystalline glasses can be with one_to_one corresponding, and local dimming's is effective, therefore becomes the market mainstream,
But the size of down straight aphototropism mode set is thicker, it is impossible to meet the pursuit to ultra-thin LCD on market.Side entrance back
Although module meets the pursuit on market to ultra-thin LCD, but its sidelight zonal control is difficult, it is impossible to accomplish have
The multi partition of effect, for now, can only accomplish 12nd district, and cannot accomplish between subregion that effective sunlight is isolated, therefore its HDR
Effect poor.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of backlight module and
Its liquid crystal display, it is intended to solve side entrance back module of the prior art and cannot realize the problem of multi partition local dimming,
Not only meet ultra-thin requirement, and the HDR effect of side entrance back module can be effectively improved.
It is as follows that the present invention solves the technical scheme that technical problem used:
A kind of backlight module, including:
Multilamellar light guide plate, every layer of described light guide plate is all divided into multiple first backlight district, described first backlight district is provided with net
Point, the site on the two-layer light guide plate of arbitrary neighborhood is in being dislocatedly distributed；
Being arranged at multiple rows of LED lamp bar of light guide plate side, often row's LED lamp bar may be contained within the side of corresponding light guide plate；
Often row's LED lamp bar is all divided into multiple second backlight district, and the second backlight district and the first backlight district are just to setting；
And for controlling the controller that described LED lamp bar is the most luminous.
Described backlight module, wherein, each second backlight district is provided with LED component, the LED group in each second backlight district
For being connected in parallel between part, each LED component includes one or more LED being connected in series.
Described backlight module, wherein, described multiple rows of LED lamp bar may be contained within the same side of light guide plate.
Described backlight module, wherein, described light guide plate is rectangle, described multiple rows of LED lamp bar and the long limit of light guide plate
The position at place is corresponding.
Described backlight module, wherein, described first backlight district includes site district and non-site district, and aforementioned site is arranged
In the district of described site, in the two-layer light guide plate of arbitrary neighborhood, the wherein site district of a floor light guide plate and another floor light guide plate
Non-site district is opposite to each other, and wherein the non-site district of a floor light guide plate is the most right with the site district of another floor light guide plate.
Described backlight module, wherein, described light guide plate is double layer light guide board, and described double layer light guide board includes light guide plate
With lower light guide plate, the site district of described upper light guide plate is opposite to each other with the non-site district of lower light guide plate, described upper light guide plate non-
Site district is the most right with the site district of lower light guide plate.
Described backlight module, wherein, described light guide plate has exiting surface, and described exiting surface is provided with micro structure.
Described backlight module, wherein, described micro structure is wavy, and described micro structure has crest and trough, adjacent
Distance between two crests is less than 150 μm, and the height between crest to trough is more than 60 μm.
A kind of liquid crystal display, including backlight module as above.
Described liquid crystal display, wherein, described liquid crystal display is LCD TV.
Backlight module provided by the present invention and liquid crystal display thereof, be provided by multilamellar light guide plate, and every layer of leaded light
Plate is all divided into multiple first backlight district, is provided with site in the first backlight district, the net on the two-layer light guide plate of arbitrary neighborhood
Point is in being dislocatedly distributed, and by the combination of multilamellar light guide plate, thus the site realizing whole first backlight district is luminous, its local dimming
Effect the best, dynamic contrast is high, and image quality more preferably, such that it is able to be effectively improved the HDR effect of side entrance back module, solves
The problem that side entrance back module of the prior art cannot realize multi partition local dimming；And can realize effective light every
From, it is to avoid the light in the first adjacent backlight district interferes, and improves light-out effect further；It addition, the backlight mould of the present invention
Group can meet user's pursuit to ultra-thin LCD, and simple in construction.
Accompanying drawing explanation
Fig. 1 is the light guide plate structural representation with LED lamp bar of the backlight module in a preferred embodiment of the present invention；
Fig. 2 is the subregion schematic diagram of the light guide plate in a preferred embodiment of the present invention；
Fig. 3 is the subregion schematic diagram of the light guide plate in a preferred embodiment of the present invention and LED lamp bar；
Fig. 4 is the network point distribution area schematic of the upper light guide plate in a preferred embodiment of the present invention；
Fig. 5 is the close-up schematic view of Fig. 4；
Fig. 6 is the network point distribution area schematic of the lower light guide plate in a preferred embodiment of the present invention；
Fig. 7 is the network point distribution area schematic after upper light guide plate and the lower light guide plate combination of the present invention；
Fig. 8 is the structural representation of the exiting surface of the light guide plate in the present invention.
Detailed description of the invention
The invention provides a kind of backlight module and liquid crystal display thereof, for making the purpose of the present invention, technical scheme and excellent
Point is clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should be appreciated that this place
The specific embodiment described, only in order to explain the present invention, is not intended to limit the present invention.
It should be noted that, term used in the present invention " on ", D score "left", "right" and similar statement be simply
Descriptive purpose, to be not offered as be unique embodiment.
Referring to shown in Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the leaded light of the backlight module in a preferred embodiment of the present invention
Plate and the structural representation of LED lamp bar；Fig. 2 is the subregion schematic diagram of the light guide plate in a preferred embodiment of the present invention；Fig. 3
It it is the subregion schematic diagram of the light guide plate in a preferred embodiment of the present invention and LED lamp bar.The invention provides a kind of backlight
Module, the multiple rows of LED lamp bar 200 including multilamellar light guide plate 100, being arranged at light guide plate 100 side and for controlling described LED
The most luminous controller (not shown) of lamp bar 200.Every layer of described light guide plate 100 is all divided into multiple first backlight district 101,
Being provided with site 102 in described first backlight district 101, the site 102 on the two-layer light guide plate 100 of arbitrary neighborhood is in dislocation point
Cloth；Often row's LED lamp bar 200 may be contained within the side of corresponding light guide plate 100；Often row's LED lamp bar 200 is all divided into multiple
Second backlight district 201, the second backlight district 201 and the first backlight district 101 are just to setting.
Wherein, the present invention is provided by multilamellar light guide plate 100, and every layer of described light guide plate 100 is all divided into multiple
One backlight district 101, is provided with site 102 in the first backlight district 101, the site 102 on the two-layer light guide plate 100 of arbitrary neighborhood
In being dislocatedly distributed, by the combination of multilamellar light guide plate 100, thus the site realizing whole first backlight district is luminous, and its local is adjusted
The effect of light is the best, and dynamic contrast is high, and image quality more preferably, such that it is able to be effectively improved the HDR effect of side entrance back module, solves
The problem that certainly side entrance back module of the prior art cannot realize multi partition local dimming；And the arbitrary neighborhood in the present invention
Two-layer light guide plate 100 on site 102 in being dislocatedly distributed, i.e. the site 102 on the light guide plate of same layer is spaced,
So that the isolation of effective light can be realized between the first backlight district of same layer, it is to avoid interfere；It addition, the present invention
Backlight module can meet user's pursuit to ultra-thin LCD, and simple in construction.
Preferably, as shown in Figure 1, Figure 3, each second backlight district 201 is provided with LED component, each second backlight district 201
LED component between for being connected in parallel, each LED component includes one or more LED being connected in series so that control
Device processed can independently control the luminescence of the LED component in each second backlight district 201, it is achieved the effect of local dimming.
Preferably, described multiple rows of LED lamp bar 200 may be contained within the same side of light guide plate 100, so, the effect of local dimming
Fruit more preferably, and can reduce volume to greatest extent, saves space, it is achieved limit ultra-thin, narrow, meets user to ultra-thin, the liquid of ultra-narrow
The pursuit of crystal display.It should be noted that, the position that arranges of described multiple rows of LED lamp bar 200 is not limited thereto, in the present invention
Other preferred embodiment in, described multiple rows of LED lamp bar 200 can also be arranged at the offside of described light guide plate 100 or adjacent
Side etc..
Preferably, described light guide plate 100 is rectangle, described multiple rows of LED lamp bar 200 and the place, long limit of light guide plate 100
Position corresponding, its light-out effect is more preferable, goes out light evenly, improves further and light quality.
Preferably, fit tightly between described multilamellar light guide plate 100, do not stay gap, not only effectively prevent light and pass through
The phenomenon that intermediate space occurs refraction to cause light uneven occurs, furthermore, it is also possible to reduce complete machine thickness as much as possible, it is achieved
Ultra-thin.
Preferably, described first backlight district 101 includes site district and non-site district, between the district of arbitrary neighborhood Liang Ge site
Being provided with non-site district, aforementioned site 102 is arranged in the district of described site, in the two-layer light guide plate 100 of arbitrary neighborhood, wherein
The site district of one floor light guide plate is opposite to each other with the non-site district of another floor light guide plate, wherein the non-site district of a floor light guide plate with
The site district of another floor light guide plate is the most right, by the combination of light guide plate, it is achieved thereby that there is net in whole first backlight district 101
Point.
Preferably, as described in Fig. 2 and Fig. 3, every layer of described light guide plate 100 is all divided into multiple uniform first backlight district
101, if defining the axle parallel with the long limit of described light guide plate 100 is X-axis, the axle parallel with the minor face of light guide plate 100 is Y-axis,
Then every layer of described light guide plate 100 is divided into 12 the first backlight districts in the X-axis direction, is divided into 4 first back ofs the body in the Y-axis direction
Light district, i.e. every layer described light guide plate 100 is divided into 48 the first backlight districts on the whole, thus solves the back of the body of the prior art
Light module can only realize the problem that 12 subregions cause its HDR weak effect.
Preferably, such as Fig. 4, as shown in Fig. 5, Fig. 6 and Fig. 7, in a kind of embodiment of the present invention, described light guide plate 100 is
Double layer light guide board 100, corresponding, described LED lamp bar 200 is also double LED lamp bar 200.Described double layer light guide board includes leading
Tabula rasa and lower light guide plate.Specifically, as in figure 2 it is shown, described first backlight district 101 is by multiple A subregions and multiple B subregion structures
Becoming, described A subregion is disposed adjacent with B subregion, is provided with a B subregion between the most adjacent two A subregions.Such as Fig. 4, Fig. 5 and
Shown in Fig. 6, described upper light guide plate be only provided with in A subregion site 102(i.e. A subregion be on the site district of light guide plate, B subregion is
The non-site district of upper light guide plate), described lower light guide plate is only provided with the net that 102(i.e. B subregion in site is lower light guide plate in B subregion
Point district, A subregion is the non-site district of lower light guide plate).The non-site district of the site district of described upper light guide plate and lower light guide plate is each other
The most right, the non-site district of described upper light guide plate is the most right with the site district of lower light guide plate.Group by upper light guide plate Yu lower light guide plate
Closing, the site of upper light guide plate and lower light guide plate is combined and is constituted the site (as shown in Figure 7) in whole first backlight district, thus real
The luminescence in existing whole first backlight district.It addition, LED injects the light of light guide plate incidence surface in the case of not having site all
Being total reflection, light will not be out；Just destroy total reflection when light encounters site, light can be reflected by light guide plate
Luminous；The ground i.e. having site just now can be luminous, and the place there be not site is the most luminous.
It should be noted that, the quantity that arranges of described light guide plate 100 is not limited thereto, the most real at other of the present invention
Executing in example, described light guide plate 100 may be arranged as multilamellar, such as: three layers, four layers etc., specifically can arrange according to actual needs.
The quantity of described light guide plate 100 is the most, and the first backlight district is the most, more can effectively promote the HDR effect of liquid crystal display, solves
Existing ultra-thin side entering type liquid crystal display cannot realize effective HDR effect.
In the present embodiment, the LED lamp bar of upper row is corresponding with upper light guide plate, and the light that the LED lamp bar of upper row sends is only
Can incide in light guide plate, only can propagate in upper light guide plate；The LED lamp bar of lower row is corresponding with lower light guide plate, lower row's
The light that LED lamp bar sends is only capable of inciding in lower light guide plate, only can propagate in lower light guide plate.
Preferably, the size dimension of light guide plate is the most identical.In the present embodiment, outside described upper light guide plate is with lower light guide plate
Shape is equivalently-sized, its thickness≤1.5mm.
The site processing mode of described upper light guide plate can be as in figure 2 it is shown, delete B subregion on the basis of former justifying site
Site, i.e. can obtain the site district (i.e. A subregion) of upper light guide plate；The site processing mode of described lower light guide plate can be in former justifying
Delete the site of A subregion on the basis of site, i.e. can obtain the site district (i.e. B subregion) of lower light guide plate.
As shown in Figure 8, described light guide plate 100 has exiting surface, and described exiting surface is provided with micro structure 103, thus realizes out
The uniformity of light, improves the effect light further.Described micro structure 103 in wavy, described micro structure 103 have crest with
Trough, the distance between adjacent two crests is less than 150 μm, and the height between crest to trough is more than 60 μm, and it is relatively low that it receives light ratio,
Relatively strong to the convergence of light, can the light crosstalk in adjacent the first backlight district of limited control, play the effect of light isolation, enter
One step improves light-out effect.
Preferably, the encapsulation of described LED can select a length of 4.0mm, the LED of a width of 1.4mm, or a length of
4.0mm, the LED of a width of 1.0mm.
Present invention also offers a kind of liquid crystal display, including backlight module, the concrete structure of described backlight module please be joined
According to the embodiment of backlight module and the description of accompanying drawing 1 to 8 of the present invention, do not repeat them here.
Preferably, described liquid crystal display can be LCD TV, computer etc..
In the description of this specification, the description of term " embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features, structure, material or the feature that combine this embodiment or example description are contained in of the present utility model at least one
In individual embodiment or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment
Or example.And, the specific features of description, structure, material or feature can be in any one or more embodiments or examples
In combine in an appropriate manner.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Protect scope.
Claims (10)
1. a backlight module, it is characterised in that including:
Multilamellar light guide plate, every layer of described light guide plate is all divided into multiple first backlight district, described first backlight district is provided with net
Point, the site on the two-layer light guide plate of arbitrary neighborhood is in being dislocatedly distributed；
Being arranged at multiple rows of LED lamp bar of light guide plate side, often row's LED lamp bar may be contained within the side of corresponding light guide plate；
Often row's LED lamp bar is all divided into multiple second backlight district, and the second backlight district and the first backlight district are just to setting；
And for controlling the controller that described LED lamp bar is the most luminous.
Backlight module the most according to claim 1, it is characterised in that each second backlight district is provided with LED component, respectively
For being connected in parallel between the LED component in the second backlight district, each LED component includes one or more LED being connected in series.
Backlight module the most according to claim 1, it is characterised in that described multiple rows of LED lamp bar may be contained within light guide plate
The same side.
Backlight module the most according to claim 3, it is characterised in that described light guide plate is rectangle, described multiple rows of LED
Bar is corresponding with the position at the place, long limit of light guide plate.
Backlight module the most according to claim 1, it is characterised in that described first backlight district includes site district and non-net
Point district, aforementioned site is arranged in the district of described site, in the two-layer light guide plate of arbitrary neighborhood, the wherein site district of a floor light guide plate
It is opposite to each other with the non-site district of another floor light guide plate, wherein the non-site district of a floor light guide plate and the site of another floor light guide plate
District is the most right.
Backlight module the most according to claim 5, it is characterised in that described light guide plate is double layer light guide board, described bilayer
Light guide plate is the most just including the non-site district of light guide plate and lower light guide plate, the site district of described upper light guide plate and lower light guide plate
Right, the non-site district of described upper light guide plate is the most right with the site district of lower light guide plate.
Backlight module the most according to claim 1, it is characterised in that described light guide plate has exiting surface, described exiting surface
It is provided with micro structure.
Backlight module the most according to claim 7, it is characterised in that described micro structure is wavy, described micro structure has
Having crest and trough, the distance between adjacent two crests is less than 150 μm, and the height between crest to trough is more than 60 μm.
9. a liquid crystal display, it is characterised in that include the backlight module described in any one of claim 1-8.
Liquid crystal display the most according to claim 9, it is characterised in that described liquid crystal display is LCD TV.
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| CN201610660626.4A CN106094095A (en) | 2016-08-12 | 2016-08-12 | A kind of backlight module and liquid crystal display thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610660626.4A CN106094095A (en) | 2016-08-12 | 2016-08-12 | A kind of backlight module and liquid crystal display thereof |
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Cited By (7)
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|---|---|---|---|---|
| CN107024801A (en) * | 2017-04-17 | 2017-08-08 | 武汉华星光电技术有限公司 | A kind of side entrance back module, display and light guide plate |
| WO2018126701A1 (en) * | 2017-01-04 | 2018-07-12 | 京东方科技集团股份有限公司 | Backlight module and display apparatus |
| CN108363241A (en) * | 2018-02-12 | 2018-08-03 | 深圳创维－Rgb电子有限公司 | A kind of backlight module and the liquid crystal display with the backlight module |
| US10191327B2 (en) | 2017-04-17 | 2019-01-29 | Wuhan China Star Optoelectronics Technology Co., Ltd | Edge-lit type backlight module, display and light guide plate |
| CN109424862A (en) * | 2017-08-23 | 2019-03-05 | 和硕联合科技股份有限公司 | Luminous shell |
| CN110140009A (en) * | 2016-12-29 | 2019-08-16 | 康宁股份有限公司 | Micro-structural and patterning optical plate and the device comprising the optical plate |
| CN111722758A (en) * | 2019-03-20 | 2020-09-29 | 群光电能科技股份有限公司 | Light-emitting touch panel device |
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