CN108051949A - A kind of sidelight type backlight module - Google Patents
A kind of sidelight type backlight module Download PDFInfo
- Publication number
- CN108051949A CN108051949A CN201711465706.5A CN201711465706A CN108051949A CN 108051949 A CN108051949 A CN 108051949A CN 201711465706 A CN201711465706 A CN 201711465706A CN 108051949 A CN108051949 A CN 108051949A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- backlight module
- type backlight
- layer
- 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
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface 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
- G02B6/0033—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
- G02B6/0051—Diffusing 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
- G02B6/0033—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
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement 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
- G02B6/0033—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
Abstract
The present invention provides a kind of sidelight type backlight module, light source, the diffusion layer positioned at the reflecting layer of the light guide plate lower surface, positioned at the light guide plate upper surface and the prismatic lens positioned at the diffusion layer upper surface including light guide plate, positioned at the light guide plate side；The diffusion layer be positioned at the light guide plate upper surface the first frosted layer and/or, the second frosted layer positioned at the prismatic lens lower surface.Because diffusion layer is formed by the first frosted layer for being set directly at light guide plate upper surface and the second frosted layer for being arranged on prismatic lens lower surface, without specially setting the diffuser plate of the prior art, also the composition number of plies of sidelight type backlight module can be reduced, then reduce the thickness of backlight module；Also, the assembling procedure of diffuser plate, simplified assembling process need not be considered using the backlight module of aforementioned structure.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of sidelight type backlight module.
Background technology
Liquid crystal display is the image display of Vehicles Collected from Market mainstream, widely should have been obtained on smart machine
With.Liquid crystal display mainly includes the backlight module for generating uniform light and the liquid crystal for realizing the control of each area image information
Panel；Because sidelight type backlight module has the characteristics that easy for installation, uniform light degree is preferable, liquid crystal display uses at present
Backlight module is sidelight type backlight module.
The lightening of smart machine requires higher and higher, and the thickness of liquid crystal display is correspondingly also required also correspondingly to subtract
It is small.On the premise of the material and thickness property of liquid crystal panel determine, it is capable for how further reducing the thickness of backlight module
Industry focus.But technically, in order to ensure backlight module light-emitting uniformity, sidelight type backlight module must be provided with reflecting
The components such as plate, light guide plate, dispersion plate and prism plate, and in order to ensure the technological feasibility of assembling, the thickness of various components is not
It can be configured too small, that is, further the thickness of reduction sidelight type backlight module suffers from a problem that as this field.
The content of the invention
The present invention provides a kind of new sidelight type backlight module, can realize further subtracting for sidelight type backlight module thickness
It is small.
The present invention provides a kind of sidelight type backlight module, including light guide plate, positioned at the light guide plate side light source, be located at
The reflecting layer of the light guide plate lower surface, positioned at the diffusion layer of the light guide plate upper surface and positioned at the diffusion layer upper surface
Prismatic lens；
The diffusion layer be positioned at the light guide plate upper surface the first frosted layer and/or, positioned at the prismatic lens following table
Second frosted layer in face.
Optionally, the surface of first frosted layer and/or second frosted layer is provided with transparent coatings；
Homodisperse scattering pearl is provided in the transparent coatings.
Optionally, the scattering pearl is the scattering pearl of PET material.
Optionally, the reflecting layer is the metallic reflection coating positioned at the light guide plate lower surface.
Optionally, the scattering netted dot of array arrangement is provided in the lower surface of the light guide plate.
Optionally, the light guide plate is by close to the light source side to the wedge being gradually reduced away from the light source side thickness
Shape.
Optionally, the light source is point light source；
The groove for accommodating the point light source is provided in the side of the light guide plate towards the light source；
The groove is V-groove or arc groove.
Optionally, further include and be arranged on prismatic lens upper surface diffusion sheet.
Optionally, further include and be located around plastic frame that the light guide plate and the prismatic lens side set and positioned at described
The metal coating frame of reflecting layer lower surface；
The light source is fixed in the plastic frame.
Because diffusion layer is by being set directly at the first frosted layer of light guide plate upper surface and being arranged on prismatic lens lower surface
Second frosted layer is formed, and without specially setting the diffuser plate of the prior art, can also reduce the composition of sidelight type backlight module
The number of plies then reduces the thickness of backlight module；Also, the assembling work of diffuser plate need not be considered using the backlight module of aforementioned structure
Sequence, simplified assembling process.
Description of the drawings
By reference to the explanation and the content of claims below in conjunction with attached drawing, and with to the present invention more comprehensively
Understand, other purposes of the invention and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the schematic cross-section for the sidelight type backlight module that inventive embodiments provide；
Wherein：11- light guide plates, the first frosted layers of 111-, 12- light sources, 13- reflecting layer, 14- prismatic lenses, 141- second are ground
Layer of sand, 15- plastic frames, 16- metal coating frames, 17- diffusion sheets.
Identical label indicates similar or corresponding feature or function in all of the figs.
Specific embodiment
Specific embodiments of the present invention are described in detail below with reference to attached drawing.
Fig. 1 is the schematic cross-section for the sidelight type backlight module that inventive embodiments provide.As shown in Figure 1, the present invention is implemented
The sidelight type backlight module that example provides includes light guide plate 11, light source 12, reflecting layer 13, diffusion layer and prismatic lens 14.
Light source 12 is located at the side of light guide plate 11, for emitting light to light guide plate 11；Reflecting layer 13 is arranged on light guide plate
11 lower surface for being reflected into the light of light guide plate 11, avoids light from being projected from 11 downside of light guide plate and scatters；Diffusion
Layer is arranged on the upper surface of light guide plate 11, for scattering the light projected from 11 upper surface of light guide plate so that light is by moderately
It is scattered, more uniform from the distribution of light-emitting surface light.
In the present embodiment, diffusion layer includes the first frosted layer 111 and the second frosted layer 141；First frosted layer 111 is arranged on
The upper surface of light guide plate 11 is formed after being handled by the upper surface of light guide plate 11 by frosted；Second frosted layer 141 is arranged on prismatic lens
14 lower surface is formed by the lower surface of prismatic lens 14 by frosted processing.
Because diffusion layer is by being set directly at the first frosted layer 111 of 11 upper surface of light guide plate and being arranged under prismatic lens 14
Second frosted layer 141 on surface is formed, and without specially setting the diffuser plate of the prior art, can also reduce the group of backlight module
Into the thickness of the number of plies, then reduction backlight module；Also, the assembling of diffuser plate need not be considered using the backlight module of aforementioned structure
Process, simplified assembling process.
In the present embodiment, diffusion layer includes the first frosted layer 111 for being arranged on 11 upper surface of light guide plate and is arranged on prism
Second frosted layer 141 of 14 lower surface of piece.In other embodiments, diffusion layer can also only include the first frosted layer 111 and the
One of two frosted layers 141.In the present embodiment, because the first frosted layer 111 and 141 surface of the second frosted layer are coarse structure,
So one layer of cavity layer as illustrated in the drawing can be formed in the two joint place.In practical application, the very thin thickness of cavity layer, substantially
It can be ignored.
Further, in other embodiments, may be used also on the surface of the first frosted layer 111 and/or the second frosted layer 141
To set transparent coatings, and homodisperse scattering pearl in transparent coatings is set, pearl is scattered into a realization light to utilize
Line is scattering, improves the uniformity of light source 12.Because transparent coatings and scattering pearl are arranged on the first frosted layer using coating process
111 and second on frosted layer 141, so thickness can be configured very little.In the present embodiment, scattering pearl preferably uses PET material
Manufactured scattering pearl.
Continuing with referring to Fig. 1, in the present embodiment, reflecting layer 13 is that the metallic reflection positioned at 11 lower surface of light guide plate is plated
Layer, that is, reflecting layer 13 are the lower surfaces that light guide plate 11 is arranged on using coating process.Because reflecting layer 13 uses coating
Technique is arranged on the lower surface of light guide plate 11, thus its thickness can also set it is very thin, then further reduce backlight mould
The thickness of group.
It, should be into possibly making in 11 exit facet of light guide plate in order to improve the uniformity that light is emitted from backlight module surface
The light of injection has the preferable uniformity, can set the scattering netted dot of array arrangement in the lower surface of light guide plate 11 therefore,
Disperse the light of the transmission of light guide plate 11 using scattering netted dot.
Further, light guide plate 11 can also set wedgewise, specially from by 12 side of close to sources to separate light source 12
The thickness of side light guide plate 11 is gradually reduced, to form the dispersion degree of sloping reflector raising light using wedge shape.
The light source 12 used in the present embodiment is point light source；For ease of the arrangement of point light source, in light guide plate 11 towards light source
12 side can also set the groove for accommodating point light source, and point light source is placed in groove.It is more preferred, the present embodiment concave
Slot is V-groove or arc groove.
In addition to aforementioned structure, backlight module provided in an embodiment of the present invention can also include being arranged on prismatic lens 14
The diffusion sheet 17 of upper surface so as to suitably be spread again by the light of prismatic lens 14, is avoided because emergent ray is shown
The characteristic of prismatic lens 14.
Continuing with referring to Fig. 1, backlight module provided in this embodiment further includes plastic frame 15 and metal coating frame 16.Plastic cement
Frame 15 is set around light guide plate 11 and prismatic lens 14, for light guide plate 11, prismatic lens 14, reflecting layer 13 to be fixed and protected from side
With diffusion sheet 17；In addition, light source 12 is arranged on 15 inside of plastic frame.Metal coating frame 16 is arranged on the lower surface in reflecting layer 13,
For protecting the optical module in sidelight type backlight module from bottom.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (9)
1. a kind of sidelight type backlight module, including light guide plate (11), positioned at the light guide plate (11) side light source (12), be located at
The reflecting layer (13) of light guide plate (11) lower surface, positioned at the diffusion layer of the light guide plate (11) upper surface and positioned at the expansion
Dissipate the prismatic lens (14) of layer upper surface；It is characterized in that：
The diffusion layer be positioned at the light guide plate (11) upper surface the first frosted layer (111) and/or, positioned at the prism
Second frosted layer (141) of piece (14) lower surface.
2. sidelight type backlight module according to claim 1, it is characterised in that：
The surface of first frosted layer (111) and/or second frosted layer (141) is provided with transparent coatings；
Homodisperse scattering pearl is provided in the transparent coatings.
3. sidelight type backlight module according to claim 2, it is characterised in that：
The scattering pearl is the scattering pearl of PET material.
4. according to claim 1-3 any one of them sidelight type backlight modules, it is characterised in that：
The reflecting layer (13) is the metallic reflection coating positioned at the light guide plate (11) lower surface.
5. sidelight type backlight module according to claim 4, it is characterised in that：
The lower surface of the light guide plate (11) is provided with the scattering netted dot of array arrangement.
6. sidelight type backlight module according to claim 4, it is characterised in that：
The light guide plate (11) is by close to the light source (12) side to the wedge being gradually reduced away from the light source (12) side thickness
Shape.
7. sidelight type backlight module according to claim 4, it is characterised in that：
It is point light source in the light source (12)；
The side of light guide plate (11) towards the light source (12) is provided with the groove for accommodating the point light source；
The groove is V-groove or arc groove.
8. according to claim 1-3 any one of them sidelight type backlight modules, it is characterised in that：
Further include the diffusion sheet (17) for being arranged on the prismatic lens (14) upper surface.
9. according to claim 1-3 any one of them sidelight type backlight modules, it is characterised in that：
It further includes and is located around plastic frame (15) that the light guide plate (11) and the prismatic lens (14) side set and positioned at institute
State the metal coating frame (16) of reflecting layer (13) lower surface；
The light source (12) is fixed in the plastic frame (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465706.5A CN108051949A (en) | 2017-12-28 | 2017-12-28 | A kind of sidelight type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465706.5A CN108051949A (en) | 2017-12-28 | 2017-12-28 | A kind of sidelight type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108051949A true CN108051949A (en) | 2018-05-18 |
Family
ID=62128914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711465706.5A Pending CN108051949A (en) | 2017-12-28 | 2017-12-28 | A kind of sidelight type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108051949A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11133214A (en) * | 1997-08-26 | 1999-05-21 | Dainippon Printing Co Ltd | Optical sheet, optical sheet laminate, surface light source device and transmission type display device |
| JP2003086012A (en) * | 2002-08-12 | 2003-03-20 | Enplas Corp | Side light type surface light source device, light guiding plate and light controlling member |
| TW200426458A (en) * | 2003-05-30 | 2004-12-01 | Au Optronics Corp | Side edge backlight module and LCD device |
| US20050047112A1 (en) * | 2003-04-11 | 2005-03-03 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with nano-particle layer and back light system with same |
| US20070132918A1 (en) * | 2005-11-25 | 2007-06-14 | Chih-Liang Pan | Flat display |
| CN101201416A (en) * | 2006-12-14 | 2008-06-18 | 林清彬 | Light guide plate device |
| CN101303431A (en) * | 2008-04-15 | 2008-11-12 | 京东方科技集团股份有限公司 | Light guide plate and method for manufacturing light guide plate |
| KR20090020961A (en) * | 2007-08-24 | 2009-02-27 | 주식회사 나모텍 | Light guide panel, method for manufacturing the same, and back light unit using the same |
| JP2010078774A (en) * | 2008-09-25 | 2010-04-08 | Gamma Optical Co Ltd | Optical film piece and backlight module using the optical film piece |
| CN105572791A (en) * | 2016-01-27 | 2016-05-11 | 深圳市德仓科技有限公司 | Composite light guide board and backlight module with same |
| CN207895195U (en) * | 2017-12-28 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Sidelight type backlight module |
-
2017
- 2017-12-28 CN CN201711465706.5A patent/CN108051949A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11133214A (en) * | 1997-08-26 | 1999-05-21 | Dainippon Printing Co Ltd | Optical sheet, optical sheet laminate, surface light source device and transmission type display device |
| JP2003086012A (en) * | 2002-08-12 | 2003-03-20 | Enplas Corp | Side light type surface light source device, light guiding plate and light controlling member |
| US20050047112A1 (en) * | 2003-04-11 | 2005-03-03 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with nano-particle layer and back light system with same |
| TW200426458A (en) * | 2003-05-30 | 2004-12-01 | Au Optronics Corp | Side edge backlight module and LCD device |
| US20070132918A1 (en) * | 2005-11-25 | 2007-06-14 | Chih-Liang Pan | Flat display |
| CN101201416A (en) * | 2006-12-14 | 2008-06-18 | 林清彬 | Light guide plate device |
| KR20090020961A (en) * | 2007-08-24 | 2009-02-27 | 주식회사 나모텍 | Light guide panel, method for manufacturing the same, and back light unit using the same |
| CN101303431A (en) * | 2008-04-15 | 2008-11-12 | 京东方科技集团股份有限公司 | Light guide plate and method for manufacturing light guide plate |
| JP2010078774A (en) * | 2008-09-25 | 2010-04-08 | Gamma Optical Co Ltd | Optical film piece and backlight module using the optical film piece |
| CN105572791A (en) * | 2016-01-27 | 2016-05-11 | 深圳市德仓科技有限公司 | Composite light guide board and backlight module with same |
| CN207895195U (en) * | 2017-12-28 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Sidelight type backlight module |
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