CN108693597A - Light guide structure and its manufacturing method, backlight module, liquid crystal display device - Google Patents
Light guide structure and its manufacturing method, backlight module, liquid crystal display device Download PDFInfo
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- CN108693597A CN108693597A CN201810862082.9A CN201810862082A CN108693597A CN 108693597 A CN108693597 A CN 108693597A CN 201810862082 A CN201810862082 A CN 201810862082A CN 108693597 A CN108693597 A CN 108693597A
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- Prior art keywords
- light guide
- guide plate
- light
- face
- diffusion
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Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
-
- 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
Abstract
The invention discloses a kind of light guide structure and its manufacturing method, backlight module, liquid crystal display devices, belong to display panel manufacturing field.The light guide structure includes:The first light guide plate and the second light guide plate being stacked are provided with diffusion part wherein the first face of the first light guide plate is provided with light collecting layer between the second face and the second light guide plate.Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower prism in the related technology, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided, the display quality of liquid crystal display panel is improved.
Description
Technical field
The present invention relates to display panel manufacturing field, more particularly to a kind of light guide structure and its manufacturing method, backlight module,
Liquid crystal display device.
Background technology
Backlight module is the important component of liquid crystal display panel, can provide and be evenly distributed and the light of brightness abundance
Source enables liquid crystal display panel normally to show image.
Currently, the backlight module provided in the relevant technologies includes:Light source, light guide plate, reflector plate and optical diaphragm,
In, optical diaphragm includes the film layer structures such as diffusion sheet, upper prism and lower prism.Light guide plate and diffusion sheet can be used for promoting light
The uniformity for the light that source is sent out, upper prism and lower prism can be used for increasing the brightness for the light that light source is sent out, and play poly-
The effect of light blast.It is arranged so that light that backlight module is provided is evenly distributed and brightness is sufficient.
But the optical diaphragm of the backlight module provided in the relevant technologies is by a variety of film layer structure compositions, film layer and film
Easily mutually absorption, light easy to produce the optical effects such as Newton's ring after the film layer structure after mutually adsorbing, lead between layer
Cause the display of liquid crystal display panel second-rate.
Invention content
It, can be with an embodiment of the present invention provides a kind of light guide structure and its manufacturing method, backlight module, liquid crystal display device
It solves to cause the display of liquid crystal display panel second-rate due to easily mutually adsorbing between film layer and film layer in the related technology
Problem.The technical solution is as follows:
According to the first aspect of the invention, a kind of light guide structure is provided, the light guide structure includes:
The first light guide plate and the second light guide plate being stacked;
First light guide plate has opposite the first face and the second face, and described second facing towards second light guide plate,
First face of first light guide plate is provided with light collecting layer, and first light guide plate and the light collecting layer are an integral molding structure;
It is provided with diffusion part between second face of first light guide plate and second light guide plate.
Optionally, the diffusion part is diffusion layer;
The diffusion layer is set on the second face of first light guide plate;
Alternatively, the diffusion layer is set to second light guide plate in the one side of first light guide plate.
Optionally, the diffusion part is diffusion sheet.
Optionally, the diffusion layer is made of polythiophene class material.
Optionally, the diffusion layer is made of diffusion particle material doped tin indium oxide ITO or tin-antiomony oxide ATO, institute
It includes polymetylmethacrylate or polyethylene terephtalate to state diffusion particle material.
Optionally, for the light collecting layer by multiple focal point structure compositions, the shape of the multiple focal point structure includes four
At least one of prismatic, cone and elliposoidal.
According to the second aspect of the invention, a kind of backlight module is provided, the backlight module includes light source and first
Light guide structure described in aspect, the light source are set to the side of the light guide structure.
According to the third aspect of the invention we, a kind of liquid crystal display device is provided, the liquid crystal display device includes liquid crystal
Backlight module described in display panel and second aspect;
Side where the first face of the first light guide plate described in the backlight module is arranged in the liquid crystal display panel.
According to the fourth aspect of the invention, a kind of light guide structure manufacturing method is provided, the method includes:
First light guide plate is provided, first light guide plate has opposite the first face and the second face, described second facing towards
First face of second light guide plate, first light guide plate is provided with light collecting layer, first light guide plate and the light collecting layer
It is an integral molding structure;
Second light guide plate is provided;
Form diffusion part;
First light guide plate and second light guide plate are stacked, make the second of first light guide plate facing towards
Second light guide plate, and the diffusion part is located between the second face and second light guide plate of the first light guide plate.
Optionally, the diffusion part be diffusion layer, the formation diffusion part, including:
By way of spraying or stenciling the diffusion layer is formed on the second face of first light guide plate;
Alternatively, forming the diffusion layer in the one side of second light guide plate by way of spraying or stenciling.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:
The light guide structure that the embodiment of the present invention is provided, the light guide structure include the first light guide plate and second being stacked
Light guide plate is provided with diffusion part wherein the first face of the first light guide plate is provided with light collecting layer between the second face and the second light guide plate.
Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower prism in the related technology, avoid
The problem of between film layer and film layer leading to the optical effects such as Newton's ring due to mutually adsorbing, improve liquid crystal display panel
Show quality.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of light guide structure provided in an embodiment of the present invention;
Fig. 2 is a kind of part-structure schematic diagram of light collecting layer provided in an embodiment of the present invention;
Fig. 3 is the part-structure schematic diagram of another light collecting layer provided in an embodiment of the present invention;
Fig. 4 is the part-structure schematic diagram of another light collecting layer provided in an embodiment of the present invention;
Fig. 5 is the structural schematic diagram of the first light guide structure provided in an embodiment of the present invention;
Fig. 6 is the structural schematic diagram of second of light guide structure provided in an embodiment of the present invention;
Fig. 7 is a kind of flow chart of light guide structure manufacturing method provided in an embodiment of the present invention;
Fig. 8 is the flow chart of another light guide structure manufacturing method provided in an embodiment of the present invention;
Fig. 9 is a kind of structural schematic diagram of backlight module provided in an embodiment of the present invention.
Through the above attached drawings, it has been shown that the specific embodiment of the present invention will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of the inventive concept in any manner with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate idea of the invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Liquid crystal display device (English:Liquid Crystal Display;Referred to as:LCD) include liquid crystal display panel and
Backlight module (English in LCD display back is set:Back Light), backlight module is generally divided into direct-type backlight
Module and side entrance back module.
Wherein, side entrance back module has generally included the structures such as light source, light guide plate, reflector plate and optical diaphragm.But
It is that since the optical diaphragm of backlight module includes a variety of film layer structures, and the material of film layer structure is usually softer, film layer and film layer
Between be easy absorption, light easy tos produce the optical effects such as Newton's ring after the film layer structure after mutually adsorbing, leads to liquid
The display of LCD panel is second-rate.
And an embodiment of the present invention provides a kind of light guide structure, it can be used for substituting described side entering type in the related technology
The a variety of film layer structures and light guide plate of backlight module (hereinafter referred to as backlight module), in the presence of solving the relevant technologies
Problem.
Fig. 1 is a kind of structural schematic diagram of light guide structure 10 shown in the embodiment of the present invention, which includes:Layer
The first light guide plate 11 and the second light guide plate 12 of folded setting.
Wherein, the first light guide plate 11 has opposite the first face and the second face, and second facing towards the second light guide plate 12, and first
First face of light guide plate 11 is provided with light collecting layer 13, and the first light guide plate 11 and light collecting layer 13 are an integral molding structure, and first is guide-lighting
It is provided with diffusion part 14 between second face of plate 11 and the second light guide plate 12.
Wherein, gather the structure sheaf that scattered layer is the light optically focused blast that can be will transmit through, diffusion part is the light that can be will transmit through
The structure sheaf of line homogenization.The material of the material of first light guide plate and the second light guide plate may be the same or different, for example,
The material of the material of first light guide plate and the second light guide plate can be makrolon (English:Polycarbonate;Abbreviation:PC)
Or polymethyl methacrylate (English:Polymethylmethacrylate;Abbreviation:At least one of PMMA).
Light collecting layer 13 on first light guide plate 11 is due to having and described upper prism and lower prism phase in the related technology
As act on, therefore, the first light guide plate 11 at least can be used for substituting upper prism and lower prism in the related technology, avoid
The problem of two kinds of film layer structures are disposed adjacent and cause mutually to adsorb between film layer and film layer in backlight module.
In conclusion the light guide structure that the embodiment of the present invention is provided, which includes that first be stacked is led
Tabula rasa and the second light guide plate are set wherein the first face of the first light guide plate is provided with light collecting layer between the second face and the second light guide plate
It is equipped with diffusion part.Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower rib in the related technology
Mirror, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided, improve liquid
The display quality of LCD panel.
In addition, due in described backlight module in the related technology upper prism and lower prism be with poly- to benzene two
Formic acid glycol ester (English:Polyethylene terephthalate, referred to as:PET it is) what base material was made, and PET
Fold easily occurs under the high temperature conditions, the upper prism and lower prism after fold also easily lead to the optical effects such as Newton's ring, reliably
Property is relatively low.And the material of the first light guide plate and the second light guide plate in the light guide structure that the embodiment of the present invention is provided (i.e. PC or
Person PMMA) it is not only difficult to happen the deformation such as fold under the high temperature conditions, and physical strength is higher, improves the resistance of backlight module
Power, reliability are higher.
Optionally, light collecting layer 13 shown in Fig. 1 can be made of multiple focal point structures 131, multiple focal point knot
The shape of structure 131 may include at least one of four prismatics, cone and elliposoidal.Fig. 2 shows multiple focal point structures
131 shape is the part-structure schematic diagram of the light collecting layer 13 of four prismatics.Fig. 3 shows the shape of multiple focal point structures 131
For the part-structure schematic diagram of the light collecting layer 13 of cone.Fig. 4 shows that the shape of multiple focal point structures 131 is elliposoidal
The part-structure schematic diagram of light collecting layer 13.Certainly, in other possible embodiments, multiple optically focused included by the light collecting layer 13
Point structure 131 can include four prismatics, cone and elliposoidal simultaneously, and the embodiment of the present invention is not limited herein.Certainly, should
Light collecting layer 13 is set on the first face of the first light guide plate (being not shown in Fig. 2 to Fig. 4).
When the focal point structure of four prismatics, cone and elliposoidal shape makes light be projected from the focal point structure, energy
The injection angle for enough improving light, to improve the brightness of light.
Optionally, according to the difference of diffusion part position, the embodiment of the present invention can provide following three kinds and different lead
Photo structure:
The first light guide structure, diffusion part are set on the first light guide plate.
Diffusion part can be diffusion layer, that is to say that it is film layer structure, which can be set to the first light guide plate
On second face.It is exemplary, referring to FIG. 5, the figure shows a kind of structural schematic diagram of first light guide plate 11, in the figure, diffusion
Layer 14 is set on the second face of the first light guide plate, that is to say, which is set to the first light guide plate 11 far from light collecting layer
In 13 one side.
Optionally, the second light guide plate in the first light guide structure can be the light guide plate that is provided in the related technology, this
Inventive embodiments are not limited herein.
The first light guide plate being arranged such can have both the effect of prism, lower prism and diffusion sheet, can not only use
In the uniformity for promoting the light that light source is sent out, the brightness for increasing the light that light source is sent out is can be also used for, optically focused blast is played
Effect.
Second of light guide structure, diffusion part are set on the second light guide plate.
Diffusion part can be diffusion layer, that is to say that it is film layer structure, which can be set to the second light guide plate and lean on
In the one side of nearly first light guide plate.Exemplary, with reference to figure 6, the figure shows a kind of structural schematic diagrams of second light guide plate 12.
Optionally, the first light guide plate in second of light guide structure can be that the first face is provided with the first of light collecting layer to lead
Tabula rasa is the light guide plate provided in the relevant technologies, and the embodiment of the present invention is not limited herein.
For above two light guide structure, the material difference of diffusion layer it can be made set light guide structure
Have the function of different.
Optionally, diffusion layer can be made of polythiophene class material, which has the performance of high light transmission, if
The light guide structure for being equipped with diffusion layer made of this kind of material can have high transparency.
Optionally, diffusion layer can be by the tin indium oxide (English of diffusion particle material doped 10% to 20%:Indium
Tin Oxide;Abbreviation:ITO) or tin-antiomony oxide is (English:Antimony Tin Oxide;Abbreviation:ATO it) is made, the diffusion
Particulate material includes PMMA or PET.Due to light guide plate contact with light guide plate it is easy to produce static electricity, by the of the first light guide plate
Diffusion layer made of this kind of material is arranged between two faces and the second light guide plate can play the role of preventing electrostatic.In addition, expanding
A certain proportion of ITO or ATO is adulterated in shot can also homogenize the light that the second light guide plate is exported, and cover foreign matter
(such as clast etc. on the second light guide plate or present on reflector plate) is bad etc..
The third light guide structure, diffusion part are independent laminated structure, are set to the second face and second of the first light guide plate
Between light guide plate.Optionally, which can be diffusion sheet.
The first light guide plate in the third light guide structure can be that the first face is provided with the first light guide plate of light collecting layer, the
Two light guide plates can be the light guide plate that is provided in the related technology, and the embodiment of the present invention is not limited herein.
In conclusion the light guide structure that the embodiment of the present invention is provided, which includes that first be stacked is led
Tabula rasa and the second light guide plate are set wherein the first face of the first light guide plate is provided with light collecting layer between the second face and the second light guide plate
It is equipped with diffusion part.Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower rib in the related technology
Mirror, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided, improve liquid
The display quality of LCD panel.
An embodiment of the present invention provides a kind of light guide structure manufacturing method, can be used for manufacturing described in above-described embodiment
Light guide structure, Fig. 7 show that a kind of flow chart of light guide structure manufacturing method, this method may include:
Step 701, provide the first light guide plate, the first light guide plate have opposite the first face and the second face, second facing towards
First face of the second light guide plate, the first light guide plate is provided with light collecting layer, and the first light guide plate and light collecting layer are an integral molding structure.
Step 702 provides the second light guide plate.
Step 703 forms diffusion part.
First light guide plate and the second light guide plate are stacked by step 704, make the second facing towards second of the first light guide plate
Light guide plate, and diffusion part is located between the second face and the second light guide plate of the first light guide plate.
In conclusion the manufacturing method for the light guide structure that the embodiment of the present invention is provided, by by the first light guide plate and
Two light guide plates are stacked, and the first face of the first light guide plate is provided with light collecting layer, is arranged between the second face and the second light guide plate
There is diffusion part.Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower rib in the related technology
Mirror, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided, improve liquid
The display quality of LCD panel.
Optionally, in above-mentioned steps 701, the first light guide plate and light collecting layer can by injection mold come formed the one at
Type structure.By liquid can injected plastics material (such as PMMA or PC) injection injection mold in, using the injection mold formed
In integrated formed structure, light collecting layer can may include above-mentioned Fig. 2 by multiple focal point structure compositions, multiple focal point structure
To the focal point structure of four prismatics, cone or elliposoidal described in Fig. 4.Certainly, multiple included by the light collecting layer
Focal point structure can also include four prismatics, cone and elliposoidal simultaneously.
Optionally, diffusion part can be diffusion layer, then as shown in figure 8, the figure shows provided in an embodiment of the present invention another
A kind of manufacturing method of light guide structure, the step of diffusion part is formed in this method, in above-mentioned steps 703 may include:
Step 7031 forms diffusion layer on the second face of the first light guide plate.
It is exemplary, deposition, spray or stencil by way of form diffusion layer on the second face of the first light guide plate.
Wherein, the diffusion part formed using step 7031 can refer to above-mentioned Fig. 5 described embodiments.
Step 7032 forms diffusion layer in the one side of the second light guide plate.
It is exemplary, deposition, spray or stencil by way of form diffusion layer in the one side of the second light guide plate.
The diffusion part formed using step 7032 can refer to above-mentioned Fig. 6 described embodiments.
Certainly, when diffusion part is diffusion sheet, it is straightforward to provide diffusion sheet in the related technology is for the manufacture present invention
The light guide structure that embodiment is provided.
It should be noted that the sequencing of the manufacturing method step of light guide structure provided in an embodiment of the present invention can be into
The appropriate adjustment of row, for example, step 7031 can be executed before step 702.It is of course also possible to according to circumstances to above-mentioned steps into
The corresponding increase and decrease of row, any one skilled in the art in the technical scope disclosed by the present invention, can readily occur in change
The method of change, should be covered by the protection scope of the present invention, therefore repeat no more.
Involved light guide structure can refer in the manufacturing method for the light guide structure that the embodiment of the present invention is provided
The related embodiment of the light guide structure of foregoing description, details are not described herein.
In conclusion the manufacturing method for the light guide structure that the embodiment of the present invention is provided, by by the first light guide plate and
Two light guide plates are stacked, and the first face of the first light guide plate is provided with light collecting layer, is arranged between the second face and the second light guide plate
There is diffusion part.Since the light collecting layer being arranged on the first light guide plate can be used for substituting upper prism and lower rib in the related technology
Mirror, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided, improve liquid
The display quality of LCD panel.
Fig. 9 is a kind of backlight module provided in an embodiment of the present invention, as shown in figure 9, backlight module include light source 1 and on
The light guide structure 10 (this is not shown in figure light collecting layer and diffusion part) described in embodiment is stated, light source 1 is set to guide-lighting knot
The side of structure 10.
In addition to this, which can also include reflector plate 2, frame glue 3, shading glue 4, flexible circuit board 5 and the back of the body
The structures such as plate 6.The light that light source 1 is sent out injects to the second light guide plate 12, can be provided with site under the second light guide plate 12, the net
Point is used for destroying the total reflection of light, and light is projected from the one side of the second light guide plate 12, then by the second face of the first light guide plate 11
The diffusion part being arranged between the second light guide plate 12 homogenizes, finally the light collecting layer by being arranged on the first face of the first light guide plate 11
It by light-ray condensing and projects, the light of injection is evenly distributed and brightness is sufficient.
Optionally, backlight module provided in an embodiment of the present invention is side entrance back module, employed in the backlight module
Light source can be light emitting diode (English:Light Emitting Diode;Referred to as:LED) lamp bar, or cold cathode
Fluorescent lamp (English:Cold Cathode Fluorescent Lamp;Referred to as:CCFL), the embodiment of the present invention does not limit this
It is fixed.
In conclusion the backlight module that the embodiment of the present invention is provided, using light guide structure, which leads first
Tabula rasa and the second light guide plate are stacked, wherein the first face of the first light guide plate is provided with light collecting layer, the second face is guide-lighting with second
Diffusion part is provided between plate.Upper prism in the related technology is substituted due to the structure for the light collecting layer being arranged on the first light guide plate
And lower prism, therefore the problem of leading to the optical effects such as Newton's ring due to mutually adsorbing between film layer and film layer is avoided,
Improve the display quality of liquid crystal display panel.
Also, in a variety of film layer structures that the backlight module provided in the relevant technologies includes, each film layer structure is both needed to
It individually to cut equipment to be cut, this makes the cost for making backlight module higher, in addition, a variety of cutting by this
When film layer structure is assembled into backlight module, packaging technology is complex, such as needs to control each film layer structure and the seam of frame glue
Gap, and the light guide structure in the backlight module that the embodiment of the present invention is provided not only is saved it is not necessary that a variety of film layer structures are arranged
The cost of manufacture of backlight module also simplifies the packaging technology of backlight module.A variety of film layer structures are also avoided to be cut
During, it is mixed into the generation for the problems such as clast is bad so as to cause the foreign matter of backlight module.Improve the yield of backlight module.
An embodiment of the present invention provides a kind of liquid crystal display device, which may include liquid crystal display panel
With backlight module shown in Fig. 9, side where the first face of the first light guide plate is arranged in backlight module in liquid crystal display panel.
Optionally, liquid crystal display device provided in an embodiment of the present invention can be mobile phone, tablet computer, television set, display
Any product or component with display function such as device, laptop, Digital Frame, navigator.
In conclusion the liquid crystal display device that the embodiment of the present invention is provided, including liquid crystal display panel and backlight module,
Wherein the backlight module uses light guide structure, the light guide structure to be stacked the first light guide plate and the second light guide plate, and first leads
First face of tabula rasa is provided with light collecting layer, and diffusion part is provided between the second face and the second light guide plate.Due on the first light guide plate
The light collecting layer of setting can be used for substituting upper prism and lower prism in the related technology, therefore avoid between film layer and film layer
The problem of leading to the optical effects such as Newton's ring due to mutually adsorbing, improve the display quality of liquid crystal display panel.
Term " at least one of A, B and C " in the present invention, only it is a kind of description affiliated partner incidence relation, table
Show may exist seven kinds of relationships, can indicate:Individualism A, individualism B, individualism C exist simultaneously A and B, deposit simultaneously
In A and C, C and B are existed simultaneously, exists simultaneously A, B and C this seven kinds of situations.
In the present invention, term " first ", " second " and " third " is used for description purposes only, and should not be understood as instruction or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of light guide structure, which is characterized in that the light guide structure includes:
The first light guide plate and the second light guide plate being stacked;
First light guide plate has opposite the first face and the second face, and described second facing towards second light guide plate, described
First face of the first light guide plate is provided with light collecting layer, and first light guide plate and the light collecting layer are an integral molding structure;
It is provided with diffusion part between second face of first light guide plate and second light guide plate.
2. light guide structure according to claim 1, which is characterized in that the diffusion part is diffusion layer;
The diffusion layer is set on the second face of first light guide plate;
Alternatively, the diffusion layer is set to second light guide plate in the one side of first light guide plate.
3. light guide structure according to claim 1, which is characterized in that
The diffusion part is diffusion sheet.
4. light guide structure according to claim 2, which is characterized in that the diffusion layer is made of polythiophene class material.
5. light guide structure according to claim 2, which is characterized in that the diffusion layer is by the material doped oxidation of diffusion particle
Either the diffusion particle material is made in tin-antiomony oxide ATO to indium tin ITO includes polymetylmethacrylate or poly- to benzene
Naphthalate PET.
6. light guide structure according to claim 1, which is characterized in that the light collecting layer by multiple focal point structure compositions,
The shape of the multiple focal point structure includes at least one of four prismatics, cone and elliposoidal.
7. a kind of backlight module, which is characterized in that the backlight module includes that light source and claim 1 to 6 are any described
Light guide structure,
The light source is set to the side of the light guide structure.
8. a kind of liquid crystal display device, which is characterized in that the liquid crystal display device includes liquid crystal display panel and claim 7
The backlight module;
Side where the first face of the first light guide plate described in the backlight module is arranged in the liquid crystal display panel.
9. a kind of light guide structure manufacturing method, which is characterized in that the method includes:
There is provided the first light guide plate, first light guide plate has opposite the first face and the second face, and described second facing towards described
First face of the second light guide plate, first light guide plate is provided with light collecting layer, and first light guide plate and the light collecting layer are one
Forming structure;
Second light guide plate is provided;
Form diffusion part;
First light guide plate and second light guide plate are stacked, made the second of first light guide plate facing towards described
Second light guide plate, and the diffusion part is located between the second face and second light guide plate of the first light guide plate.
10. according to the method described in claim 9, it is characterized in that, the diffusion part be diffusion layer, the formation diffusion part,
Including:
By way of spraying or stenciling the diffusion layer is formed on the second face of first light guide plate;
Alternatively, forming the diffusion layer in the one side of second light guide plate by way of spraying or stenciling.
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| CN201810862082.9A CN108693597A (en) | 2018-08-01 | 2018-08-01 | Light guide structure and its manufacturing method, backlight module, liquid crystal display device |
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Application publication date: 20181023 |