CN107728382A - Backlight module and preparation method thereof and display device - Google Patents
Backlight module and preparation method thereof and display device Download PDFInfo
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- CN107728382A CN107728382A CN201711230540.9A CN201711230540A CN107728382A CN 107728382 A CN107728382 A CN 107728382A CN 201711230540 A CN201711230540 A CN 201711230540A CN 107728382 A CN107728382 A CN 107728382A
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- China
- Prior art keywords
- guide plate
- light guide
- composite membrane
- backlight module
- crooked end
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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
- G02F1/133615—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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0091—Positioning aspects of the light source relative to the light guide
Abstract
The invention discloses a kind of backlight module and preparation method thereof and display device.Backlight module, including：Light guide plate, including incidence surface, relative first surface and second surface, incidence surface is adjacent with first surface and second surface difference, first surface is exiting surface, second surface is dot surface, light guide plate has at least one crooked end, and crooked end is adjacent with incidence surface, and crooked end is from first surface to second surface curving；Composite membrane, attach on the first surface；Glue frame, surround light guide plate and composite membrane；Shading rubber belt, including at least the first branch, the first branch is attached to the edge of composite membrane and extends to glue frame by edge, wherein, it is adhesively fixed between light guide plate and composite membrane by Optical transparent adhesive.Backlight module provided by the invention and preparation method thereof and display device, reduce the crooked end composite membrane in backlight module in light guide plate and tilt or peel off risk, improve backlight module and the performance reliability of display device.
Description
Technical field
The present invention relates to display technology field, is filled more particularly, to a kind of backlight module and preparation method thereof and display
Put.
Background technology
In existing display device technology, display panel is broadly divided into liquid crystal display panel and organic light-emitting display panel
The technology of two kinds of main flows.Wherein, liquid crystal display panel can control liquid crystal point by applying voltage, formation at liquid crystal molecule both ends
The electric field of son deflection, and then control the transmission of light to realize the display function of display panel；Organic light-emitting display panel uses
Electroluminescent organic material, when there is electric current to pass through electroluminescent organic material, luminescent material will light, and then realize aobvious
Show the display function of panel.
, it is necessary to there is backlight module to provide light source for display device in liquid crystal display device, backlight module is generally divided into side
Two kinds of backlight modules of light formula and straight-down negative, wherein, sidelight type backlight module is due to that can realize subtracting for display device integral thickness
It is thin, and turn into mainstream technology.
In recent years, people require more and more higher to the sensory experience of display device, the display device of Curved screen occur,
It is existing suitable for the display module of curved surface screen display device, backlight module is by multiple film layer structure composition, including light guide plate, expands
The blooming pieces such as discrete piece, upper reflector plate, lower reflector plate, when in order to adapt to make curved-surface display device by manufacturing backlight module into tool
When there are unilateral or two lateral bends shapes, bounce be present in the edge of bending position is due to each membrane material stacked structure, it is each
The problems such as membrane material is easily peeled off or tilted, influence the performance reliability of display device.
Therefore it provides a kind of backlight module of dependable performance and preparation method thereof and display device, are that this area urgently solves
Certainly the problem of.
The content of the invention
In view of this, the invention provides a kind of backlight module and preparation method thereof and display device, solves the raising back of the body
The technical problem of optical mode group performance reliability.
In a first aspect, in order to solve the above-mentioned technical problem, the present invention proposes a kind of backlight module, including：
Light guide plate, including incidence surface, relative first surface and second surface, incidence surface and first surface and second surface
Adjacent respectively, first surface is exiting surface, and second surface is dot surface, and light guide plate has at least one crooked end, curved end
Portion is adjacent with incidence surface, and crooked end is from first surface to second surface curving；
Composite membrane, attach on the first surface；
Glue frame, surround light guide plate and composite membrane；
Shading rubber belt, including at least the first branch, the first branch is attached to the edge of composite membrane and extends to glue by edge
Frame,
Wherein, it is adhesively fixed between light guide plate and composite membrane by Optical transparent adhesive.
Second aspect, in order to solve the above-mentioned technical problem, the present invention provide a kind of preparation method of backlight module, making side
Method includes：
Light guide plate is made, light guide plate includes incidence surface, relative first surface and second surface, incidence surface and first surface
Adjacent with second surface difference, first surface is exiting surface, and second surface is dot surface, and light guide plate has at least one curved end
Portion, crooked end is adjacent with incidence surface, and crooked end is from first surface to second surface curving；
Composite membrane is provided, Optical transparent adhesive is attached on composite membrane；
The composite membrane for being pasted with Optical transparent adhesive is attached to the first surface side of light guide plate；
Light guide plate and composite membrane are placed in glue frame；
Shading rubber belt is attached, shading rubber belt is attached to the edge of composite membrane and extends to glue frame by edge.
The third aspect, in order to solve the above-mentioned technical problem, the present invention provide a kind of display device, including provided by the invention
Any one backlight module.
Compared with prior art, backlight module of the invention and preparation method thereof and display device, realizing following has
Beneficial effect：
Backlight module provided by the invention and preparation method thereof and display device, the light guide plate in backlight module have at least
The exiting surface of one crooked end, composite membrane and light guide plate is adhesively fixed by Optical transparent adhesive, and the present invention uses composite membrane, will
The function of a variety of membrane materials is integrated in one, it is not necessary to the whole face of a variety of membrane materials is bonded, avoid lower reflector plate in conventional arrangement, under
The problem of more membrane materials such as prismatic lens and upper prismatic lens are difficult to effective fixation；The shape that composite membrane adapts to light guide plate is consolidated with light guide plate
Fixed, at the position that the crooked end with light guide plate contacts, composite membrane is also required to the bending of adaptability, passes through optical lens in the present invention
Gelatin is adhesively fixed composite membrane and light guide plate, composite membrane after bending can be bonded with the crooked end of light guide plate be bonded it is firm,
There is membrane material and tilts the risk that even membrane material is peeled off in the crooked end reduced in light guide plate, and the performance for improving display module can
By property, while Optical transparent adhesive light transmission rate is high, and light loss is small, does not interfere with the light extraction efficiency of display module；In composite membrane
Surface mount shading rubber belt is realized and the firm fixation of glue frame, further ensures the integrally-built stability of display module.This hair
The backlight module and display device performance reliability of bright offer are high, and structural stability is good.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
It is combined in the description and the accompanying drawing of a part for constitution instruction shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
Fig. 1 is the film layer structure schematic diagram of display module provided in an embodiment of the present invention；
Fig. 2 is the first optional situation schematic diagram of Optical transparent adhesive in backlight module provided in an embodiment of the present invention；
Fig. 3 is the schematic top plan view that Optical transparent adhesive is set in Fig. 2；
Fig. 4 is second of optional situation schematic diagram of Optical transparent adhesive in backlight module provided in an embodiment of the present invention；
Fig. 5 is a kind of optional embodiment schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 6 is another optional embodiment schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 7 is a kind of optional embodiment schematic diagram of light guide plate provided in an embodiment of the present invention；
Fig. 8 is another optional embodiment schematic diagram of light guide plate provided in an embodiment of the present invention；
Fig. 9 is the structural representation of the backlight module made using the light guide plate in Fig. 8；
Figure 10 is manufacturing backlight module method flow diagram provided in an embodiment of the present invention；
Figure 11 is the schematic diagram of the light guide plate made in the preparation method of backlight module provided by the invention；
Figure 12 be backlight module provided by the invention preparation method in composite membrane and light guide plate be adhesively fixed schematic diagram；
Figure 13 is a kind of optional embodiment schematic diagram of display device provided in an embodiment of the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless have in addition
Body illustrates that the unlimited system of part and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The present invention relates to a kind of backlight module and display device, backlight module provided by the invention can be with curved-surface display face
Plate coordinates, the curved-surface display device suitable for making dependable performance.(had using special-shaped light guide plate in the backlight module of the present invention
The light guide plate of crooked end), the blooming piece in backlight module uses composite membrane, is fixed on composite membrane by Optical transparent adhesive
On special-shaped light guide plate, ensure that bonding is firm between composite membrane and light guide plate, solve that membrane material in Curved screen is peeled off or what is tilted asks
Topic.
Fig. 1 is the film layer structure schematic diagram of display module provided in an embodiment of the present invention, as shown in figure 1, backlight module bag
Include：Light guide plate 101, including (incidence surface is surface relative with the light source of backlight module in as light guide plate 101 to incidence surface, Fig. 1
Not shown in), relative first surface 1012 and second surface 1013, incidence surface and first surface 1012 and second surface 1013
Adjacent respectively, first surface 1012 is exiting surface, and second surface 1013 is dot surface, and light incides light guide plate from incidence surface
In 101, change light path after reflecting the refraction with dot surface inside light guide plate 101, make light from the exiting surface of light guide plate 101
Outgoing；In backlight module provided by the invention, light guide plate 101 has at least one crooked end W, crooked end W and incidence surface
Adjacent, crooked end W is from first surface 1012 to the curving of second surface 1013, it is necessary to which explanation is that light guide plate 101 can be with
Bent with a crooked end W, or in the both sides of light guide plate 101, i.e., with two crooked ends W, Fig. 1 only to lead
Tabula rasa 101 is illustrated exemplified by having a crooked end W.
With continued reference to Fig. 1, backlight module provided by the invention includes composite membrane 102, is attached on first surface 1012；Glue
Frame 103, surround light guide plate 101 and composite membrane 102；Backlight module also includes shading rubber belt 104, and shading rubber belt 104 comprises at least
First branch 1041, the first branch 1041 are attached to the edge of composite membrane 102 and extend to glue frame 103 by edge, wherein, it is guide-lighting
It is adhesively fixed between plate 101 and composite membrane 102 by Optical transparent adhesive 105.Backlight module provided by the invention also include light source,
The conventional structures such as flexible PCB, will not be repeated here.
Composite membrane 102 in backlight module provided by the invention is the membrane material for integrating the function of multiple membrane materials,
Such as can be the membrane material that diffusion sheet function and prismatic lens function are integrated in one；Shading rubber belt 104 in the present invention is by multiple
The edge for closing film 102 extends glue frame 103, can extend to the side of glue frame 103, shading rubber belt 104 is attached to composite membrane
The part at 102 edges is two-sided tape, and the part for extending to the side of glue frame 103 can be one side glue.
Optical transparent adhesive 105 is a kind of cementing material of light transmission rate of water white transparency more than 90%, and the present invention is to light
The specific material category for learning transparent adhesive tape 105 does not limit.The present invention is for light guide plate 101 and the composite membrane of being adhesively fixed simultaneously
The shape of 102 Optical transparent adhesive 105, size, thickness, form etc. are not specifically limited, and can realize the He of lightguide plate fixing 101
Any one glue material of composite membrane 102 is within the scope of protection of the invention.
In backlight module provided by the invention, light guide plate has at least one crooked end, and composite membrane and light guide plate go out
Smooth surface is adhesively fixed by Optical transparent adhesive, and the present invention uses composite membrane, and the function of a variety of membrane materials is integrated in one, it is not necessary to
By the whole face fitting of a variety of membrane materials, avoid more membrane materials such as lower reflector plate, lower prismatic lens and upper prismatic lens in conventional arrangement and be difficult to have
The problem of effect is fixed；The shape that composite membrane adapts to light guide plate is fixed with light guide plate, in the portion that the crooked end with light guide plate contacts
Position, composite membrane are also required to the bending of adaptability, are adhesively fixed composite membrane and light guide plate by Optical transparent adhesive in the present invention, bending
It is firm that composite membrane afterwards can be bonded with the crooked end bonding of light guide plate, and membrane material occurs in the crooked end reduced in light guide plate
The risk that even membrane material is peeled off is tilted, improves the performance reliability of display module, while Optical transparent adhesive light transmission rate is high, light
Lose small, do not interfere with the light extraction efficiency of display module；Realized in the surface mount shading rubber belt of composite membrane firm solid with glue frame
It is fixed, further ensure the integrally-built stability of display module.Backlight module provided by the invention has curved shape can
Coordinate with curved face display panel, form curved-surface display device.
The setting of Optical transparent adhesive includes a variety of situations in the present invention, such as can be in light guide plate and composite membrane contact surface
Whole face sets Optical transparent adhesive, and a plurality of strip Optical transparent adhesive is either set between light guide plate and composite membrane or is only being led
The some parts contacted between tabula rasa and composite membrane set Optical transparent adhesive, below by setting the several optional of Optical transparent adhesive
Performance illustrates, but the setting of Optical transparent adhesive is not limited to situations below in the present invention.
In the first optional situation, Optical transparent adhesive is set between crooked end and composite membrane, when light guide plate has
During two crooked ends, Optical transparent adhesive is respectively provided between crooked end and composite membrane at two.Specifically referring to figs. 2 and 3
Shown, Fig. 2 is the first optional situation schematic diagram of Optical transparent adhesive in backlight module provided in an embodiment of the present invention, and Fig. 3 is
The schematic top plan view of Optical transparent adhesive is set in Fig. 2, as shown in Figures 2 and 3, Fig. 2 and illustrate only the leaded light in backlight module
The part of plate 101, composite membrane 102 and Optical transparent adhesive 105, so that light guide plate 101 has two crooked end W as an example, Fig. 3 is shown
Optical transparent adhesives 105 are set in 101 two crooked end W positions of light guide plate, in order to illustrate to understand the position of Optical transparent adhesive 105
Put, composite membrane 102 is not represented in Fig. 3, the Optical transparent adhesive 105 set between crooked end W and composite membrane 102 can be with
It is a continuous whole piece as shown in Figure 3 or the multi-section optical transparent adhesive tape of segmented.In the embodiment, in backlight
The design of a variety of membrane materials superposition fitting is replaced in module using the composite membrane of Multifunctional centralized the whole body, compound film material is adapting to light guide plate
Shape when being bonded fixed with crooked end, solve the problems, such as that more membrane materials are difficult to effective fixation, in crooked end and composite membrane
The position of contact sets Optical transparent adhesive, and it is firm to ensure that composite membrane bonds with bend of light conducting plate end, reduces and is bending
There is the risk that membrane material is tilted or peeled off in end, and improves the performance reliability of backlight module, while only in the bending of light guide plate
Optical transparent adhesive is set between end and composite membrane, and cement amount saves material cost less.
In second of optional situation, light guide plate includes the first end relative with incidence surface, crooked end with it is compound
Optical transparent adhesive is set between film between first end and composite membrane.Fig. 4 is in backlight module provided in an embodiment of the present invention
Second of optional situation schematic diagram of Optical transparent adhesive, as shown in figure 4, so that light guide plate 101 has two crooked end W as an example,
Light guide plate 101 includes the first end D1 relative with incidence surface 1011, between crooked end W and composite membrane and first end D1
Optical transparent adhesive 105 is set between composite membrane, watched from depression angle, Optical transparent adhesive is in " door " font, when light guide plate has
When having a crooked end W, the Optical transparent adhesive in " door " font as shown in Figure 4 can also be set.Accurately to illustrate light
Shape and the position that transparent adhesive tape is set are learned, does not represent the composite membrane being bonded with light guide plate 101 in Fig. 4, in backlight module
Including the structure such as light source glue frame be also not shown.In the embodiment, composite membrane adapts to the shape of light guide plate and light guide plate pastes
Close, the part contacted in composite membrane with the crooked end of light guide plate needs the bending of adaptability to be bonded, in light guide plate and composite membrane
The both sides (when light guide plate is with a crooked end) of contact or three sides (when light guide plate is with two crooked ends) set light
Transparent adhesive tape is learned, realizes multidirectional fixed composite membrane and light guide plate, it is firm to ensure that composite membrane is integrally adhesively fixed with light guide plate
Property, the composite membrane reduced in the crooked end of light guide plate tilts or even the risk of peeling, improves display module dependable performance
Property.
In the third optional situation, whole face sets Optical transparent adhesive between light guide plate and composite membrane.The embodiment
In the display module of offer, whole face sets Optical transparent adhesive between light guide plate and composite membrane, does not have to consider work when whole face is set
Attach the shape and the parameter such as position of Optical transparent adhesive in skill, technique is relatively easy during making, while light going out from light guide plate
After smooth surface projects, then it is emitted by Optical transparent adhesive and has certain light loss (because the bloom of Optical transparent adhesive passes through, herein
Light loss it is smaller), whole face sets Optical transparent adhesive between light guide plate and composite membrane, ensure that light successively by leaded light
After plate, Optical transparent adhesive and composite membrane outgoing, light penetration is identical, and then display module can provide whole face for display panel
Uniform light source, it ensure that display panel brightness homogeneity.
Further, in some optional embodiments, Fig. 5 is one kind of backlight module provided in an embodiment of the present invention
Optional embodiment schematic diagram, so that light guide plate 101 has two crooked end W as an example, backlight module also includes chase 106, iron
Frame 106 is located at the side of second surface 1013 of light guide plate 101, the shape of chase 106 it is identical with the shape of light guide plate 101 (namely
When light guide plate has a crooked end, chase also has a crooked end；When light guide plate has two crooked ends, chase
Also there are two crooked ends), chase 106 is combined fixation with glue frame 103, wherein, glue frame 103 and chase 106 can pass through
Mechanical snap is fixed, either by the end face that glue frame 103 contacts with chase 106 set tack coat be fixedly connected or,
Glue frame 103 is molded on chase 106 and realizes the integration of glue iron.
In the embodiment, it is adhesively fixed composite membrane and light guide plate by Optical transparent adhesive, composite membrane adapts to light guide plate
Shape is fixed, and it is firm to be bonded with the crooked end bonding of light guide plate, and membrane material occurs in the crooked end reduced in light guide plate
The risk that even membrane material is peeled off is tilted, improves the performance reliability of display module, while Optical transparent adhesive light transmission rate is high, light
Lose small, do not interfere with the light extraction efficiency of display module；Realized in the surface mount shading rubber belt of composite membrane firm solid with glue frame
It is fixed, further ensure the integrally-built stability of display module；Have and guide-lighting plate shape identical in backlight module simultaneously
Iron frame structure, chase and light guide plate are provided commonly for the fixation of backlight module shape, the end bending of especially fixed backlight module
Shape, mechanical strength increase of the backlight module in structure, improves mechanical stability, backlight module provided by the invention has
Curved shape can coordinate with curved face display panel, form curved-surface display device.
Further, in some optional embodiments, Fig. 6 is the another of backlight module provided in an embodiment of the present invention
Kind of optional embodiment schematic diagram, as shown in fig. 6, shading rubber belt 104 also includes the second branch 1042, the second branch 1042 and the
One branch 1041 is connected, and the second branch 1042, which is attached in glue frame 103, extends to surface of the chase 106 away from light guide plate 101.
In the embodiment, the first branch of shading rubber belt can be double faced adhesive tape, and the second branch can be one side glue (with glue
Frame and the one side of chase contact have adhesive property), the one side of Part I is used for that composite membrane and glue frame, another side is adhesively fixed
For display panel and backlight module to be adhesively fixed；The outside for being arranged on backlight module of the branch of shading rubber belt second, which is formed, to be fixed
Layer, improves the stability in backlight module overall structure.
Further, in some optional embodiments, light guide plate has two crooked ends and a flat part, puts down
Plate portion is between two crooked ends；The first sector crosssection is crossed to form parallel to the plane and crooked end of incidence surface, with
Flat part is crossed to form square-section, and the thickness of the first sector crosssection is equal to the thickness of square-section.
Specifically, Fig. 7 is a kind of optional embodiment schematic diagram of light guide plate provided in an embodiment of the present invention, such as Fig. 7 institutes
Show, light guide plate has two crooked end W and a flat part P, flat part P between two crooked end W；Fig. 7 is shown
The first sector crosssection M1 is crossed to form parallel to the plane and crooked end W of incidence surface, and being crossed to form rectangle with flat part P cuts
Face M2, wherein, the first sector crosssection M1 thickness d 1 is equal to square-section M2 thickness d 2, using the leaded light in the embodiment
The structural representation for the backlight module that plate makes is referred to shown in Fig. 5 or Fig. 6, and backlight module has two crooked ends, can
To coordinate with the display panel with same flexure curvature, the display device of two lateral bends, backlight provided by the invention are fabricated to
In module, the composite membrane being integrated in one using more membrane material functions replaces the structure of conventional a variety of membrane materials superposition, avoids multimembrane
The shape that material (lower reflector plate, lower prismatic lens and upper prismatic lens etc.) adapts to the crooked end of light guide plate is difficult to effective fixation when fixing
The problem of, the present invention in composite membrane adapt to light guide plate shape fixed with light guide plate, contacted in the crooked end with light guide plate
Position, composite membrane is also required to the bending of adaptability, after composite membrane is adhesively fixed with light guide plate by Optical transparent adhesive, composite membrane energy
It is firm to be enough bonded with the crooked end bonding of light guide plate, and the crooked end reduced in light guide plate membrane material occurs and tilts even membrane material
The risk of peeling, the performance reliability of display module is improved, and then display device performance reliability can be lifted.The embodiment party
In formula, the setting for the Optical transparent adhesive between light guide plate and composite membrane can be that times that embodiment makes referrals to is stated in the application
Anticipate a kind of mode.
Further, in some optional embodiments, light guide plate has two crooked ends and a bent intermediate
Portion, intermediate bent section are crossed to form the first fan between two crooked ends parallel to the plane and crooked end of incidence surface
Tee section, the second sector crosssection is crossed to form with intermediate bent section, the thickness of the first sector crosssection is equal to the second sector crosssection
Thickness.
Specifically, Fig. 8 is another optional embodiment schematic diagram of light guide plate provided in an embodiment of the present invention, such as Fig. 8
Shown, there is light guide plate two crooked end W and an intermediate bent section ZW, intermediate bent section ZW to be located at two crooked end W
Between, as shown in figure 8, the first sector crosssection M1 is crossed to form parallel to the plane and crooked end W of incidence surface, with bent intermediate
Portion ZW is crossed to form the second sector crosssection M3, the first sector crosssection M1 thickness d 3 of the thickness d 1 equal to the second sector crosssection M3,
Light guide plate is in integrally case of bending.
Fig. 9 is the structural representation of the backlight module made using the light guide plate in Fig. 8, each mark in wherein Fig. 9
Meaning is referred to the explanation of embodiment corresponding to Fig. 5 and Fig. 6, the specific setting of shading rubber belt is not shown in Fig. 9, for this
The setting of shading rubber belt in embodiment can also be shown in reference picture 5 and Fig. 6.As shown in figure 9, backlight module is integrally in bending
Shape, backlight module can have chase 106, can also not have chase 106, the backlight module that the embodiment provides can
To coordinate with the display panel with same flexure curvature, the display device of whole face bending, in of the invention, using more membrane material functions
The composite membrane that is integrated in one replaces the structure of conventional a variety of membrane materials superposition, avoid more membrane materials (lower reflector plate, lower prismatic lens and
Upper prismatic lens etc.) shape of marginal position that adapts to light guide plate the problem of being difficult to effective fixation when fixing, composite membrane in the present invention
The shape and light guide plate that can adapt to light guide plate are fixed, compound after composite membrane is adhesively fixed with light guide plate by Optical transparent adhesive
It is firm that film can be bonded with the crooked end bonding of light-guide edge, and membrane material tilting occurs in the crooked end reduced in light guide plate
The risk that even membrane material is peeled off, improves the performance reliability of display module, and then can lift display device performance reliability.
In the embodiment, the setting for the Optical transparent adhesive between light guide plate and composite membrane can be that embodiment Jie is stated in the application
Any one mode to continue.
Further, the present invention also provides a kind of preparation method of backlight module, the system of backlight module provided by the invention
Make method and belong to a total inventive concept with backlight module provided in an embodiment of the present invention, when understanding of the invention, for the back of the body
The embodiment of optical mode group and manufacturing backlight module method can be referred to mutually.
Figure 10 is manufacturing backlight module method flow diagram provided in an embodiment of the present invention, as shown in Figure 10, preparation method bag
Include：
Step S101：Light guide plate is made, the light guide plate of light guide plate includes incidence surface, relative first surface and the second table
Face, incidence surface is adjacent with first surface and second surface difference, and first surface is exiting surface, and second surface is dot surface, guide-lighting
Plate has at least one crooked end, and crooked end is adjacent with incidence surface, and crooked end is from first surface to second surface side
Bending.
Figure 11 is the schematic diagram of the light guide plate made in the preparation method of backlight module provided by the invention.Using injection work
Skill makes light guide plate, and Figure 11 is only so that light guide plate has crooked end W as an example, incidence surface 1011 and first surface 1012 and the
Two surfaces 1013 are distinguished adjacent, and crooked end W is adjacent with incidence surface 1011, and crooked end W is from first surface 1012 to the second table
The curving of face 1013.
Step S102：Composite membrane is provided, Optical transparent adhesive is attached on composite membrane；On the optics attached on composite membrane
Shape, size and the restriction of Optical transparent adhesive position of transparent adhesive tape is referred to the embodiment on backlight module in the application
Explanation.
Step S103：The composite membrane for being pasted with Optical transparent adhesive is attached to the first surface side of light guide plate.Figure 12 is
Composite membrane and light guide plate are adhesively fixed schematic diagram in the preparation method of backlight module provided by the invention.Figure 12 is schematic table
Show to be adhesively fixed by Optical transparent adhesive 105 between composite membrane 102 and light guide plate 101, it is also only curved with one with light guide plate
Carried out exemplified by the portion of curved end schematically illustrate.
Step S104：Light guide plate and composite membrane are placed in glue frame.
Step S105：Shading rubber belt is attached, shading rubber belt is attached to the edge of composite membrane and extends to glue frame by edge.
Using preparation method provided in an embodiment of the present invention make display module structural representation be referred to Fig. 1,
Shown in Fig. 5 or Fig. 6,
In the backlight module made using preparation method provided by the invention, light guide plate has at least one crooked end,
The exiting surface of composite membrane and light guide plate is adhesively fixed by Optical transparent adhesive, and using composite membrane, the function of a variety of membrane materials is integrated
In one, it is not necessary to be bonded the whole face of a variety of membrane materials, avoid lower reflector plate, lower prismatic lens and upper prismatic lens etc. in conventional arrangement
The problem of more membrane materials are difficult to effective fixation；The shape that composite membrane adapts to light guide plate is fixed with light guide plate, in the bending with light guide plate
The position of ends contact, composite membrane are also required to the bending of adaptability, are adhesively fixed composite membrane by Optical transparent adhesive in the present invention
With light guide plate, it is firm that composite membrane after bending can be bonded with the crooked end bonding of light guide plate, reduces in the curved of light guide plate
There is membrane material and tilts the risk that even membrane material is peeled off in curved end portion, and improves the performance reliability of display module, same to optical transparency
Glue light transmission rate is high, and light loss is small, does not interfere with the light extraction efficiency of display module；It is real in the surface mount shading rubber belt of composite membrane
Now with the firm fixation of glue frame, the integrally-built stability of display module is further ensured.
Light guide plate can be with a crooked end, two crooked ends or two in backlight module provided by the invention
An intermediate bent section (i.e. light guide plate is in integrally curved shape) is connected between crooked end, adapts to the shape making of light guide plate
Backlight module can also have a crooked end, two crooked ends or it is overall be in bending, backlight provided by the invention
Module can coordinate with the curved face display panel with same flexure shape, form curved-surface display device.
Further, in some optional embodiments, the preparation method of backlight module provided in an embodiment of the present invention
Also include：Chase is made, chase is combined fixation with glue frame, the shape of chase is identical with the shape of light guide plate；By light guide plate
The step being placed in composite membrane in glue frame is further：Light guide plate and composite membrane are placed in chase and glue frame.Using the implementation
The structural representation for the backlight module that mode makes is with reference to shown in figure 5.In the backlight module made using the embodiment, have
Chase, the shape of chase is identical with the shape of light guide plate, and chase and light guide plate are provided commonly for the fixation of backlight module shape, especially
The shape of the end bending of fixed backlight module, mechanical strength increase of the backlight module in structure, improves backlight module
Mechanical stability.
Further, in some optional embodiments, the preparation method of backlight module provided in an embodiment of the present invention
The step of middle attaching shading rubber belt, further comprises：Shading rubber belt is attached to the edge of composite membrane, and glue frame is extended to by edge, and
Surface of the chase away from light guide plate is extended to by glue frame, the structural representation of the backlight module made using the embodiment is referred to
Shown in Fig. 6.The backlight module made using the embodiment, shading rubber belt are attached to the portion that the edge of composite membrane extends to glue frame
Divide and ensure that being adhesively fixed between composite membrane and glue frame, surface of the chase away from light guide plate is extended in backlight module by glue frame
Outside form fixed bed, the overall stability improved on back light module unit structure of design of shading rubber belt.
Further, the present invention also provides a kind of display device, including any one display module provided by the invention, schemes
13 be a kind of optional embodiment schematic diagram of display device provided in an embodiment of the present invention.Display device provided by the invention
In backlight module, light guide plate has at least one crooked end, and the exiting surface of composite membrane and light guide plate is gluing by optical clear
Close and fix, the present invention uses composite membrane, and the function of a variety of membrane materials is integrated in one, it is not necessary to the whole face of a variety of membrane materials is bonded,
Avoid the problem of more membrane materials such as lower reflector plate, lower prismatic lens and upper prismatic lens are difficult to effective fixation in conventional arrangement；Composite membrane
The shape for adapting to light guide plate is fixed with light guide plate, and at the position that the crooked end with light guide plate contacts, composite membrane is also required to adapt to
Property bending, be adhesively fixed composite membrane and light guide plate by Optical transparent adhesive in the present invention, composite membrane after bending can be with leading
The crooked end bonding fitting of tabula rasa is firm, and the crooked end reduced in light guide plate membrane material occurs and tilts what even membrane material was peeled off
Risk, the performance reliability of display module is improved, while Optical transparent adhesive light transmission rate is high, light loss is small, does not interfere with aobvious
Show the light extraction efficiency of module；In the realization of surface mount shading rubber belt and the firm fixation of glue frame of composite membrane, further ensure aobvious
Show the integrally-built stability of module.Display device provided by the invention, performance reliability is good, high mechanical strength.
By above-described embodiment, backlight module of the invention and preparation method thereof and display device, reach as follows
Beneficial effect：
Backlight module provided by the invention and preparation method thereof and display device, the light guide plate in backlight module have at least
The exiting surface of one crooked end, composite membrane and light guide plate is adhesively fixed by Optical transparent adhesive, and the present invention uses composite membrane, will
The function of a variety of membrane materials is integrated in one, it is not necessary to the whole face of a variety of membrane materials is bonded, avoid lower reflector plate in conventional arrangement, under
The problem of more membrane materials such as prismatic lens and upper prismatic lens are difficult to effective fixation；The shape that composite membrane adapts to light guide plate is consolidated with light guide plate
Fixed, at the position that the crooked end with light guide plate contacts, composite membrane is also required to the bending of adaptability, passes through optical lens in the present invention
Gelatin is adhesively fixed composite membrane and light guide plate, composite membrane after bending can be bonded with the crooked end of light guide plate be bonded it is firm,
There is membrane material and tilts the risk that even membrane material is peeled off in the crooked end reduced in light guide plate, and the performance for improving display module can
By property, while Optical transparent adhesive light transmission rate is high, and light loss is small, does not interfere with the light extraction efficiency of display module；In composite membrane
Surface mount shading rubber belt is realized and the firm fixation of glue frame, further ensures the integrally-built stability of display module.This hair
The backlight module and display device performance reliability of bright offer are high, and structural stability is good.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel it should be understood that example above merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (12)
- A kind of 1. backlight module, it is characterised in that including：Light guide plate, including incidence surface, relative first surface and second surface, the incidence surface and the first surface and described Second surface difference is adjacent, and the first surface is exiting surface, and the second surface is dot surface, and the light guide plate has at least One crooked end, the crooked end is adjacent with the incidence surface, and the crooked end is from the first surface to described Two surface curvings；Composite membrane, attach on the first surface；Glue frame, surround the light guide plate and the composite membrane；Shading rubber belt, including at least the first branch, first branch is attached to the edge of the composite membrane and by the edge The glue frame is extended to,Wherein, it is adhesively fixed between the light guide plate and the composite membrane by Optical transparent adhesive.
- 2. backlight module according to claim 1, it is characterised in thatThe Optical transparent adhesive is set between the crooked end and the composite membrane.
- 3. backlight module according to claim 2, it is characterised in thatThe light guide plate includes the first end relative with the incidence surface, is set between the first end and the composite membrane Put the Optical transparent adhesive.
- 4. backlight module according to claim 1, it is characterised in thatWhole face sets the Optical transparent adhesive between the light guide plate and the composite membrane.
- 5. according to the backlight module described in any one of Claims 1-4, it is characterised in thatThe backlight module also includes chase, and the chase is located at the second surface side of the light guide plate, the chase Shape it is identical with the shape of the light guide plate；The chase is combined fixation with the glue frame.
- 6. backlight module according to claim 5, it is characterised in thatThe shading rubber belt also includes the second branch, and second branch is connected with first branch, the second branch patch It is attached in the glue frame and extends to surface of the chase away from the light guide plate.
- 7. backlight module according to claim 1, it is characterised in thatThe light guide plate has two crooked ends and a flat part, and the flat part is located at two crooked ends Between；The first sector crosssection is crossed to form parallel to the plane and the crooked end of the incidence surface, is intersected with the flat part Square-section is formed, the thickness of first sector crosssection is equal to the thickness of the square-section.
- 8. backlight module according to claim 1, it is characterised in thatThe light guide plate has two crooked ends and an intermediate bent section, and the intermediate bent section is positioned at described in two Between crooked end,The first sector crosssection is crossed to form parallel to the plane and the crooked end of the incidence surface, with the intermediate bent section The second sector crosssection is crossed to form, the thickness of first sector crosssection is equal to the thickness of second sector crosssection.
- 9. a kind of preparation method of backlight module, it is characterised in that the preparation method includes：Make light guide plate, the light guide plate include incidence surface, relative first surface and second surface, the incidence surface with it is described First surface and second surface difference are adjacent, and the first surface is exiting surface, and the second surface is dot surface, described Light guide plate has at least one crooked end, and the crooked end is adjacent with the incidence surface, and the crooked end is by described One surface is to the second surface curving；Composite membrane is provided, Optical transparent adhesive is attached on the composite membrane；The composite membrane for being pasted with Optical transparent adhesive is attached to the first surface side of the light guide plate；The light guide plate and the composite membrane are placed in glue frame；Shading rubber belt is attached, the shading rubber belt is attached to the edge of the composite membrane and extends to the glue by the edge Frame.
- 10. the preparation method of backlight module according to claim 9, it is characterised in thatThe preparation method also includes：Chase is made, the chase is combined fixation, the shape of the chase and the shape of the light guide plate with the glue frame It is identical；It is further by the step that the light guide plate and the composite membrane are placed in glue frame：The light guide plate and the composite membrane are placed in the chase and the glue frame.
- 11. the preparation method of backlight module according to claim 10, it is characterised in thatThe step of attaching shading rubber belt further comprises：The shading rubber belt is attached to the edge of the composite membrane, by the side Edge extends to the glue frame, and extends to surface of the chase away from the light guide plate by the glue frame.
- 12. a kind of display device, it is characterised in that including the backlight module described in claim 1 to 8.
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| CN201711230540.9A CN107728382A (en) | 2017-11-29 | 2017-11-29 | Backlight module and preparation method thereof and display device |
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| CN201711230540.9A CN107728382A (en) | 2017-11-29 | 2017-11-29 | Backlight module and preparation method thereof and display device |
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| CN111216320A (en) * | 2020-01-02 | 2020-06-02 | 深圳市德仓科技有限公司 | Iron frame manufacturing mold and method, and rubber-iron integrated frame injection mold and method |
| WO2020161184A1 (en) * | 2019-02-08 | 2020-08-13 | Continental Automotive Gmbh | Optical unit for backlighting a display |
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Application publication date: 20180223 |