CN106054448A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN106054448A CN106054448A CN201610418318.0A CN201610418318A CN106054448A CN 106054448 A CN106054448 A CN 106054448A CN 201610418318 A CN201610418318 A CN 201610418318A CN 106054448 A CN106054448 A CN 106054448A
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- Prior art keywords
- backlight module
- unit
- diffusion barrier
- light
- film unit
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Classifications
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- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module. The backlight module includes a light source unit, a light guide plate, a diffusion film unit, a reflection unit and a deflection film unit; the light source unit is correspondingly arranged on a light incoming surface of the light guide ; the diffusion film unit is arranged above a light outgoing surface of the light guide plate; the refection film unit is arranged under light leakage surfaces of the light guide plate; the deflection film unit is arranged above the diffusion film unit; and a surface of the deflection film unit is provided with optical microstructures. According to the backlight module, the diffusion films are provided with defection films, and in this way, the maximum brightness of light emitted by the backlight module is deflected to a certain direction, and then the direction of the maximum brightness and sight of a viewer are consistent, the utilization rate of the light of the backlight module is improved, and energy consumption is reduced. In addition, the invention further improves a liquid crystal display device.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of backlight module and liquid crystal indicator.
Background technology
Along with the fast development of flat panel display, liquid crystal display instead of traditional cathode ray tube in various fields,
Become main flow display device.Liquid crystal itself is the most luminous, needs backlight module to provide light to illuminate viewing area.Backlight bright
There is the biggest impact at degree, uniformity, visual angle for the optical property of terminal display.
As it is shown in figure 1, the back light module unit structure provided for prior art and visual angle curve, including LED light source 1, light guide plate
2, reflectance coating 3, lower diffusion barrier 4, upper diffusion barrier 7, lower brightness enhancement film 5, upper brightness enhancement film 6, half intensity visual angle is about 22 °.Such as Fig. 2,
It is back light module unit structure and the visual angle curve not using brightness enhancement film, including LED light source 1, light guide plate 2, reflectance coating 3, lower diffusion barrier
4, upper diffusion barrier 5, half intensity visual angle is about 30 °.It is appreciated that the light whether using brightness enhancement film, backlight module to send
Line maximum brightness is all in 0 ° of direction of normal.The maximum brightness backlight module in 0 ° of direction of normal is mainly used on home videos, table
Beholder's eyes such as computer, mobile phone and the most contour occasion of display.
It is appreciated that when above-mentioned backlight module and display device are in aircraft, train, automobile etc. use environment, beholder
Eyes often with display not on a height, if the eyes of car driver are higher than automotive displays, and on train
The sight line of rider is then less than display.Owing to the maximum brightness of existing backlight module is all on 0 ° of direction, after deviateing 0 ° of direction
Then there is bigger decay in brightness.In order to meet the brightness requirement on specific direction, it is necessary for being made more the brightness in 0 ° of direction
Height, but owing to the light in 0 ° of direction will not enter human eye, cause great energy dissipation, and owing to meet highlighted requirement,
Cause backlight module cost increase, difficult design.
Summary of the invention
In view of this, in order to overcome defect and the problem of prior art, the present invention provides a kind of backlight module.
A kind of backlight module, including light source cell, light guide plate, diffusion barrier unit, reflectance coating unit, described light guide plate has
One incidence surface, adjacent to an exiting surface of described incidence surface and four light leak faces, described light source cell be correspondingly arranged in described in lead
At the incidence surface of tabula rasa, described diffusion barrier unit is arranged at the top of described exiting surface, and described reflectance coating unit is arranged at described
The lower section in light leak face, also includes being arranged at the deflection film unit above described diffusion barrier unit, and described deflection film unit surface sets
There is optical microstructures.
In a preferred embodiment, described deflection film unit is laminated by least one of which deflection film, described deflection film
Surface is provided with optical microstructures.
In a preferred embodiment, described deflection film prepares light by the way of using without mask direct write in PET base material
Learn micro structure.
In a preferred embodiment, if described optical microstructures is several waveform micro structures composition or single sawtooth
Shape micro structure forms or is mixed by several waveform micro structures and several zigzag micro structures.
In a preferred embodiment, single waveform micro structure and single zigzag micro structure are unsymmetric structure.
In a preferred embodiment, described diffusion barrier unit is laminated by least two-layer diffusion barrier.
In a preferred embodiment, also include that brightness enhancement film unit, described brightness enhancement film unit are arranged at described two-layer diffusion barrier
Between.
In a preferred embodiment, described brightness enhancement film unit is laminated by least one of which brightness enhancement film.
In a preferred embodiment, described light source cell is LED light source.
Additionally, present invention also offers a kind of liquid crystal indicator, including described backlight module.
An object of the present invention: provide a kind of backlight module, including light source cell, light guide plate, diffusion barrier unit, anti-
Penetrating film unit and deflection film unit, described light source cell is correspondingly arranged at the incidence surface of described light guide plate, described diffusion barrier list
Unit is arranged at above the exiting surface of described light guide plate, and described reflectance coating unit is arranged at below the light leak face of described light guide plate, institute
Stating deflection film unit and be arranged at the top of described diffusion barrier unit, described deflection film unit surface is provided with optical microstructures, this
The backlight module of bright offer, arranges deflection film on diffusion barrier, and the maximum brightness that so can be emitted beam by backlight module is inclined
Forward specific direction to so that high-high brightness direction is consistent with the sight line of beholder, improve the light utilization of system, reduce energy
Consumption.
The two of the object of the invention, it is provided that a kind of liquid crystal indicator including above-mentioned backlight module, it is not necessary to existing
Backlight module and liquid crystal display screen are transformed, and can be directly integrated use, simple to operate, easy to use.
Accompanying drawing explanation
The structural representation of the use brightness enhancement film backlight module that Fig. 1 provides for prior art of the present invention and visual angle curve；
The structural representation of the backlight module without brightness enhancement film that Fig. 2 provides for prior art of the present invention and visual angle curve；
The structural representation of the backlight module that Fig. 3 provides for the embodiment of the present invention one；
The structural representation of the backlight module that Fig. 4 provides for the embodiment of the present invention two；
The structural representation of the backlight module that Fig. 5 provides for the embodiment of the present invention three；
The structural representation of the backlight module that Fig. 6 provides for the embodiment of the present invention four.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing
Give the better embodiment of the present invention.These are only the preferred embodiments of the present invention, not thereby limit the special of the present invention
Profit scope, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the present invention
The implication that technical staff is generally understood that is identical.The term used the most in the description of the invention is intended merely to describe tool
The purpose of the embodiment of body, it is not intended that in limiting the present invention.Term as used herein " and/or " include one or more
Arbitrary and all of combination of relevant Listed Items.
The described backlight module that the application provides includes: light source, light guide plate, reflectance coating, lower diffusion barrier, upper diffusion barrier and partially
Transferring film, described light guide plate has an incidence surface, adjacent to an exiting surface of described incidence surface and four light leak faces, described light source pair
Should be arranged at the incidence surface of described light guide plate, described reflectance coating is arranged at the lower section in described light leak face, described lower diffusion barrier, on
Diffusion barrier and deflection film are set in turn in the top of described exiting surface, and described liquid crystal display screen is arranged at above described deflection film, described
Deflection film surface is provided with optical surface structure.
It is appreciated that in the application that the backlight module of foregoing description is side entrance back module, and reality can also be adopted
By down straight aphototropism mode set, specifically, described backlight module includes: light source, reflectance coating, lower diffusion barrier, upper diffusion barrier and deflection
Film, described reflectance coating is arranged at the lower section of described light source, and described lower diffusion barrier, upper diffusion barrier and deflection film are successively along described light source
Light direction arrange, described deflection film surface is provided with optical surface structure.
According to foregoing description, the liquid crystal indicator that the application provides, enter including above-mentioned down straight aphototropism mode set or side
Formula backlight module, all can realize the purpose of the application.
In order to become apparent from, illustrate the technical scheme that the application provides expressly, carry out in detail below in conjunction with specific embodiment
Explanation.
Embodiment one
Referring to Fig. 3, the embodiment of the present invention one provides a kind of backlight module 100, and it includes components described below: light source cell 1,
Light guide plate 2, reflectance coating unit 3, diffusion barrier unit, deflection film unit.Wherein:
Described light source cell 1 is LED light source.It is appreciated that LED light source is optimal way therein, reality also may be used
To use other light sources.
Described light guide plate 2 have an incidence surface (not shown), adjacent to described incidence surface an exiting surface (not shown) and
Four light leak face (not shown), described light source cell 1 is correspondingly arranged at the incidence surface of described light guide plate 2.
Described reflectance coating unit 3 is arranged at the lower section in described light leak face, it will be understood that arranged by the lower section in light leak face
Reflectance coating unit 3, can avoid light leakage, improves light service efficiency.
Described diffusion barrier unit is arranged at the top of described exiting surface.Wherein, described diffusion barrier unit is expanded by least two-layer
Scattered film is laminated.In the present embodiment, diffusion barrier unit includes 2 layers of diffusion barrier, is respectively lower diffusion barrier 4 and upper diffusion barrier 7.
Deflection film unit is arranged at above described diffusion barrier unit, and described deflection film unit surface is provided with the micro-knot of optics
Structure.Wherein, described deflection film unit is laminated by least one of which deflection film, and the surface of described deflection film is provided with the micro-knot of optics
Structure.In the present embodiment, deflection film unit is made up of one layer of deflection film 8.
Preferably, described deflection film prepares optical microstructures by the way of using without mask direct write in PET base material.
Preferably, described optical microstructures be several waveform micro structures composition or several zigzag micro structures or
Person is mixed by several waveform micro structures and several zigzag micro structures.
Preferably, the backlight module that the application provides also includes the brightness enhancement film list being arranged between described two-layer diffusion barrier
Unit.
Wherein, described brightness enhancement film unit is laminated by least one of which brightness enhancement film.Preferably, in the embodiment of the present application one
Brightness enhancement film includes lower brightness enhancement film 5 and upper brightness enhancement film 6.
It is appreciated that above-mentioned brightness enhancement film can be omitted, and deflects film unit and be directly arranged at the upper of described diffusion barrier unit
Side.
The backlight module that the embodiment of the present invention one provides, arranges one layer of deflection film 8 on lower diffusion barrier 4 and upper diffusion barrier 7,
So the maximum brightness that backlight module emits beam can be deflected into upwardly direction so that high-high brightness direction and beholder
Sight line consistent, improve the light utilization of system, reduce energy consumption.
Embodiment two
Referring to Fig. 4, the embodiment of the present invention two provides a kind of backlight module, is with embodiment one difference, deflection
Direction is slightly different with embodiment one, repeats no more here.
The backlight module that the embodiment of the present invention two provides, arranges one layer of deflection film 8 on lower diffusion barrier 4 and upper diffusion barrier 7,
The maximum brightness that backlight module so can send optics deflects into downwardly direction so that high-high brightness direction and beholder
Sight line consistent, improve the light utilization of system, reduce energy consumption.
Embodiment three
Referring to Fig. 5, the embodiment of the present invention three provides a kind of backlight module, is with embodiment one difference, uses
Deflection film 8 be two-layer deflection film, repeat no more here.
The backlight module that the embodiment of the present invention three provides, arranges two-layer deflection film 8 on lower diffusion barrier 4 and upper diffusion barrier 7
With 9, so the maximum brightness that backlight module emits beam can be deflected into upwardly direction so that high-high brightness direction and sight
The sight line of the person of seeing is consistent, improves the light utilization of system, reduces energy consumption.
Embodiment four
Referring to Fig. 6, the embodiment of the present invention four provides a kind of backlight module, is with embodiment three difference, deflection
Direction is slightly different with embodiment three, repeats no more here.
The backlight module that the embodiment of the present invention four provides, arranges two-layer deflection film 8 on lower diffusion barrier 4 and upper diffusion barrier 7
With 9, the maximum brightness that backlight module so can send optics deflects into downwardly direction so that high-high brightness direction and sight
The sight line of the person of seeing is consistent, improves the light utilization of system, reduces energy consumption.
It is appreciated that the above embodiment of the present invention provides backlight module, deflection film can be designed as requested, can be by partially
Transferring film is directly integrated in existing backlight module the deflection that can realize specific sensing visual angle, it is not necessary to change existing structure
Become, simple in construction；Meanwhile, above-mentioned deflection film is the structure according to existing backlight module and viewing angle characteristic carries out targeted design
, this ensure that the light efficiency that backlight module is overall, be widely used in display brightness and people in train, automobile, aircraft cockpit
The application scenario that eye is the most contour.
It addition, present invention also provides a kind of liquid crystal indicator applying above-mentioned backlight module, it is not necessary to the existing back of the body
Structure and the liquid crystal display screen of light module are transformed, and can be directly integrated use, simple to operate, easy to use.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a backlight module, including light source cell, light guide plate, diffusion barrier unit, reflectance coating unit, described light guide plate has one
Incidence surface, adjacent to an exiting surface of described incidence surface and four light leak faces, described light source cell is correspondingly arranged in described leaded light
At the incidence surface of plate, described diffusion barrier unit is arranged at the top of described exiting surface, and described reflectance coating unit is arranged at described leakage
The lower section of bright finish, it is characterised in that also include being arranged at the deflection film unit above described diffusion barrier unit, described deflection film list
Unit surface is provided with optical microstructures.
2. backlight module as claimed in claim 1, it is characterised in that described deflection film unit is deflected film stacking by least one of which
Forming, the surface of described deflection film is provided with optical microstructures.
3. backlight module as claimed in claim 2, it is characterised in that described deflection film is by the way of using without mask direct write
PET base material is prepared optical microstructures.
4. backlight module as claimed in claim 3, it is characterised in that described optical microstructures is several waveform micro structures
If composition or single zigzag micro structure form or are mixed by several waveform micro structures and several zigzag micro structures
Conjunction forms.
5. backlight module as claimed in claim 4, it is characterised in that single waveform micro structure and single zigzag micro structure
For unsymmetric structure.
6. backlight module as claimed in claim 1, it is characterised in that described diffusion barrier unit is by least two-layer diffusion barrier stacking
Form.
7. backlight module as claimed in claim 6, it is characterised in that also include that brightness enhancement film unit, described brightness enhancement film unit set
It is placed between described two-layer diffusion barrier.
8. backlight module as claimed in claim 7, it is characterised in that described brightness enhancement film unit is by least one of which brightness enhancement film stacking
Form.
9. backlight module as claimed in claim 1, it is characterised in that described light source cell is LED light source.
10. a liquid crystal indicator, it is characterised in that include the backlight module described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610418318.0A CN106054448A (en) | 2016-06-12 | 2016-06-12 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610418318.0A CN106054448A (en) | 2016-06-12 | 2016-06-12 | Backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106054448A true CN106054448A (en) | 2016-10-26 |
Family
ID=57167568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610418318.0A Pending CN106054448A (en) | 2016-06-12 | 2016-06-12 | Backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106054448A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931836A (en) * | 2018-08-17 | 2018-12-04 | 京东方科技集团股份有限公司 | Light guide plate and determining method, backlight, display device, readable storage medium storing program for executing |
| CN109188771A (en) * | 2018-10-15 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display panel |
| CN109298572A (en) * | 2018-10-17 | 2019-02-01 | 京东方科技集团股份有限公司 | Angle demodulator and its manufacturing method, display device and angle regulation method |
| CN110262112A (en) * | 2019-06-04 | 2019-09-20 | 中航华东光电有限公司 | Liquid crystal display with visual angle deviation |
| CN111580308A (en) * | 2020-07-03 | 2020-08-25 | 上海天马微电子有限公司 | Backlight module and display device |
| CN113655662A (en) * | 2021-08-26 | 2021-11-16 | 合肥工业大学 | Optical film for MiniLED backlight module and preparation method thereof |
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| JP2001311939A (en) * | 2000-04-28 | 2001-11-09 | Ricoh Co Ltd | Liquid crystal display device |
| CN1584695A (en) * | 2004-06-07 | 2005-02-23 | 友达光电股份有限公司 | Light background module with light collecting function |
| CN1678943A (en) * | 2002-09-19 | 2005-10-05 | 三菱电机株式会社 | Display unit and electronic apparatus equipped with display unit |
| TW200909940A (en) * | 2007-05-18 | 2009-03-01 | 3M Innovative Properties Co | Backlight for liquid crystal display |
| CN102822708A (en) * | 2010-01-13 | 2012-12-12 | 3M创新有限公司 | Microreplicated film for attachment to autostereoscopic display components |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001311939A (en) * | 2000-04-28 | 2001-11-09 | Ricoh Co Ltd | Liquid crystal display device |
| CN1678943A (en) * | 2002-09-19 | 2005-10-05 | 三菱电机株式会社 | Display unit and electronic apparatus equipped with display unit |
| CN1584695A (en) * | 2004-06-07 | 2005-02-23 | 友达光电股份有限公司 | Light background module with light collecting function |
| TW200909940A (en) * | 2007-05-18 | 2009-03-01 | 3M Innovative Properties Co | Backlight for liquid crystal display |
| CN102822708A (en) * | 2010-01-13 | 2012-12-12 | 3M创新有限公司 | Microreplicated film for attachment to autostereoscopic display components |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931836A (en) * | 2018-08-17 | 2018-12-04 | 京东方科技集团股份有限公司 | Light guide plate and determining method, backlight, display device, readable storage medium storing program for executing |
| CN108931836B (en) * | 2018-08-17 | 2020-07-03 | 京东方科技集团股份有限公司 | Light guide plate, backlight source, display device and readable storage medium |
| CN109188771A (en) * | 2018-10-15 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display panel |
| CN109298572A (en) * | 2018-10-17 | 2019-02-01 | 京东方科技集团股份有限公司 | Angle demodulator and its manufacturing method, display device and angle regulation method |
| CN109298572B (en) * | 2018-10-17 | 2022-05-24 | 京东方科技集团股份有限公司 | Angle regulator and manufacturing method thereof, display device and angle regulating method |
| CN110262112A (en) * | 2019-06-04 | 2019-09-20 | 中航华东光电有限公司 | Liquid crystal display with visual angle deviation |
| CN111580308A (en) * | 2020-07-03 | 2020-08-25 | 上海天马微电子有限公司 | Backlight module and display device |
| CN113655662A (en) * | 2021-08-26 | 2021-11-16 | 合肥工业大学 | Optical film for MiniLED backlight module and preparation method thereof |
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