CN104763910A - Light guide plate, manufacturing method thereof, backlight source and display device - Google Patents

Light guide plate, manufacturing method thereof, backlight source and display device Download PDF

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Publication number
CN104763910A
CN104763910A CN201510201510.XA CN201510201510A CN104763910A CN 104763910 A CN104763910 A CN 104763910A CN 201510201510 A CN201510201510 A CN 201510201510A CN 104763910 A CN104763910 A CN 104763910A
Authority
CN
China
Prior art keywords
light guide
guide plate
reflecting surface
mould
central area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510201510.XA
Other languages
Chinese (zh)
Inventor
鹿堃
柏玲
王贺陶
王娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201510201510.XA priority Critical patent/CN104763910A/en
Publication of CN104763910A publication Critical patent/CN104763910A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means 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
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0093Means for protecting the light guide
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention relates to the technical field of display, and discloses a light guide plate, a manufacturing method thereof, a backlight source and a display device. In the backlight source, a supporting structure is arranged on the peripheral area, close to the reflection face of a reflection piece, of the light guide plate, the supporting structure is supported by the reflection piece when the backlight source is assembled, and therefore a certain distance is kept between the central area of the reflection face of the light guide plate and the reflection piece, the light guide plate and the reflection piece do not make direct contact, the problem that the light guide plate and the reflection piece rub each other, so the central area of the reflection face of the light guide plate is scratched is solved, and the optical performance of the light guide plate is ensured. The display device comprises the backlight source, and therefore the product quality is improved.

Description

Light guide plate and preparation method thereof, backlight and display unit
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of light guide plate and preparation method thereof, backlight and display unit.
Background technology
Because liquid crystal itself is not luminous, in the various liquid crystal display such as liquid crystal display, LCD TV (Liquid Crystal Display, hereinafter referred to as " LCD "), all need to rely on outside backlight to realize display.Backlight is divided into side-light type and straight-down negative two kinds according to distributing position, and the side-light type back light advantage that luminescent device number is few needed for it, cost is low, thickness is thin and being widely used in the LCD of small-medium size.
The partial sectional view of side-light type back light is shown in Fig. 1, it comprises backboard 3 from top to bottom, the reflector plate 2 be successively set on backboard 3, light guide plate 1 ' and optical film material 7, also comprise lamp bar 4 that contiguous light guide plate 1 ' side arranges and the glue frame 5 for lightguide plate fixing 1 ' and optical film material 7, display floater 8 is placed on glue frame 5, finally display floater 8 and backlight is fitted together by front frame 6 again.Reflector plate 2 penetrates via light guide plate 1 ' for reflection ray.The effect of light guide plate 1 ' is imported by the light of dipped beam end and is transmitted to distance light end, and lower surface relative with exit facet on light guide plate 3 ' is also printed with site, forms diffuse reflection, make whole exiting surface uniform light, forming surface light source, is supplied to display floater 8, for display.
Conventional light guide plate 1 ' lower surface is all designed to planar structure, usually directly contacts with reflector plate 2, as shown in Figure 1 after being assembled into backlight.In the assembling process of backlight, in backlight, inevitably bring the foreign matter in environment or assembly into.If the position residing for foreign matter is between light guide plate 1 ' and reflector plate 2, when module vibration-testing, light guide plate 1 ' and the mutual friction of reflector plate 2 phase, foreign matter between the two is just easy to cause light guide plate 1 ' scratch on the bottom surface, affects the optical property of light guide plate 1 '.
Summary of the invention
The invention provides a kind of light guide plate and preparation method thereof, backlight and display unit, the problem that the reflecting surface in order to solve light guide plate is easily scratched.
For solving the problems of the technologies described above, a kind of light guide plate is provided in the embodiment of the present invention, comprise exit facet and the reflecting surface relative with described exit facet, described reflecting surface comprises central area and is positioned at the neighboring area of periphery, described central area, and the neighboring area of described reflecting surface is provided with supporting construction.
Light guide plate as above, preferably, described reflecting surface has groove, and the region at the corresponding described groove place, central area of described reflecting surface, the whole neighboring area of described reflecting surface forms described supporting construction.
Light guide plate as above, preferably, the difference in height on the surface of the neighboring area of described reflecting surface and the surface of central area is 0.1mm ~ 0.3mm.
Light guide plate as above, preferably, the central area of described reflecting surface is provided with light reflection site, forms diffuse surface.
A kind of backlight is also provided in the embodiment of the present invention, the reflector plate comprising backboard and be arranged on described backboard and light guide plate, described light guide plate comprises exit facet and the reflecting surface relative with described exit facet, described reflector plate is arranged on the side, reflecting surface place of described light guide plate, described light guide plate is light guide plate as above, under the effect of the supporting construction of the reflecting surface of described light guide plate, make to keep a determining deviation between the central area of described reflecting surface and reflector plate.
Backlight as above, preferably, described backlight also comprises fixation kit, for fixing described reflector plate, makes described reflector plate be in tensioning state.
Backlight as above, preferably, described fixation kit comprises:
Hangers, is fixed on described reflector plate;
Locating dowel, is arranged on described backboard, and corresponding with the position of described hangers, described hangers hangs in described locating dowel, makes described reflector plate be in tensioning state.
Also provide a kind of display unit in the embodiment of the present invention, adopt backlight as above.
A kind of preparation method of light guide plate as above is also provided in the embodiment of the present invention, comprises:
First mould and the second mould are provided, described first mould comprises first surface, the neighboring area of described first surface has the first structure of the supporting construction for the formation of described light guide plate, and described second mould comprises second surface, the form fit of described second surface and described first surface;
To the first mould described in box and the second film tool, described first surface and second surface are near arranging, and for forming annular seal space between described first mould and the second film tool, described annular seal space is consistent with the shape and size of described light guide plate;
Described first mould or the second mould are provided with hand-hole, for injecting the material for the manufacture of light guide plate of melting in the annular seal space between described first mould and the second mould;
After cooling curing, take described first mould and the second mould apart, form light guide plate.
Preparation method as above, preferably, the central area of the first surface of described first mould is provided with the salient point of the light reflection site for the formation of light guide plate.
The beneficial effect of technique scheme of the present invention is as follows:
In technique scheme, at light guide plate, supporting construction is set near the neighboring area of the reflecting surface of reflector plate, thus when being assembled into backlight, described supporting construction is supported on described reflector plate, makes to keep a determining deviation between the central area of light guide plate reflecting surface and reflector plate, does not directly contact, avoid light guide plate and the mutual friction of reflector plate phase, cause the problem that the central area of light guide plate reflecting surface is scratched, ensure the optical property of light guide plate, improve the quality of product.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 represents the partial sectional view of display unit in prior art;
Fig. 2 represents the structural representation of light guide plate in the embodiment of the present invention;
Fig. 3 represents the sectional view of the light guide plate in Fig. 2;
Fig. 4 represent display unit in the embodiment of the present invention partial sectional view '
Fig. 5 represents the index path of backlight in the embodiment of the present invention;
Fig. 6 represents the backboard of backlight in the embodiment of the present invention and the partial structurtes schematic diagram of reflector plate;
Fig. 7 represents in the embodiment of the present invention structural representation of the mould making light guide plate;
Fig. 8 represents in the embodiment of the present invention process schematic making light guide plate.
Detailed description of the invention
In lcd technology, need backlight to provide the light needed for display.For side-edge type backlight, its lamp bar is arranged on the side of light guide plate, described light guide plate is used for being imported by the light of dipped beam end and conducting to distance light end, the reflecting surface that described light guide plate is relative with exit facet is printed with light reflection site, form diffuse reflection, make whole exit facet uniform light, forming surface light source, is supplied to display floater.Also be provided with reflector plate in the side, reflecting surface place of described light guide plate, penetrate via described light guide plate for reflection ray, improve light utilization.
The invention provides a kind of light guide plate, the reflecting surface of described light guide plate comprises central area and is positioned at the neighboring area of periphery, described central area, the neighboring area of described reflecting surface is provided with supporting construction, when being assembled into backlight, described supporting construction is supported on described reflector plate, make to keep a determining deviation between the central area of described reflecting surface and described reflector plate, directly do not contact, thus light guide plate and the mutual friction of reflector plate phase can be avoided, cause the problem that the effective coverage of light guide plate reflecting surface (central area of corresponding reflecting surface) is scratched, ensure that the optical property of light guide plate, improve the quality of product.
When assembling display unit, the viewing area of the corresponding display floater in central area of the reflecting surface of described light guide plate.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Shown in composition graphs 2 and Fig. 3, the light guide plate 1 in the embodiment of the present invention comprises exit facet A and the reflecting surface relative with exit facet A, and described reflecting surface comprises central area 100 and is positioned at the neighboring area 200 of periphery, central area 100.Be provided with light reflection site 9 in the central area 100 of the reflecting surface of light guide plate 1, form diffuse surface, improve the light uniformity of exit facet A.
The neighboring area 200 of the reflecting surface of light guide plate 1 is provided with supporting construction 10, when the reflecting surface at light guide plate 1 places blooming piece, under the effect of supporting construction 10, a determining deviation is kept between the central area 100 of described reflecting surface and described blooming piece, directly do not contact, avoid light guide plate 1 and the mutual friction of described blooming piece phase, the problem causing the effective coverage of light guide plate 1 reflecting surface (central area 100 of corresponding reflecting surface) to be scratched, ensure that the optical property of light guide plate 1.
In the backlight, described blooming piece is specially reflector plate.In a display device, the viewing area of the corresponding display floater in the central area of the reflecting surface of light guide plate 1.
Shown in Figure 4, the backlight in the embodiment of the present invention comprises backboard 3, and the reflector plate 2 be arranged on backboard 3 and light guide plate, and described light guide plate is the light guide plate 1 in the embodiment of the present invention, shown in composition graphs 2 and Fig. 3.Reflector plate 2 is arranged on the side, reflecting surface place of light guide plate 1, penetrates for the exit facet A of reflection ray via light guide plate 1, improves light utilization.Under the effect of the supporting construction 10 on light guide plate 1, make to keep certain spacing between the central area 100 of the reflecting surface of light guide plate 1 and reflector plate 2, directly do not contact, avoid light guide plate 1 and the mutual friction of reflector plate 2 phase, cause the problem that the central area 100 of light guide plate reflecting surface is scratched, ensure that the optical property of light guide plate 1, improve the quality of product.
As shown in Figure 5, in the embodiment of the present invention, the light path of backlight is: after light imports light guide plate 1, distance light end is conducted to from dipped beam end, when light transmition reflects on site 9 to light, there is diffuse reflection thus some light to penetrate from the exit facet A of light guide plate 1, some light is after the reflection of exit facet A simultaneously, can from the gap location injection of the light reflection site 9 reflecting surface, although have certain gap between the central area 100 and end reflector plate 2 of the reflecting surface of light guide plate 1, but light still can be reflected back in light guide plate 1 by reflector plate 2, recycling, thus improve the utilization ratio of light.
It is consistent with the spacing between reflector plate 2 that the whole central area 100 of the reflecting surface of light guide plate 1 is preferably set, uniform area source must be provided for display floater with better.
The spacing that specifically can arrange between the central area 100 of light guide plate 1 reflecting surface and reflector plate 2 is 0.1mm ~ 0.3mm.
Wherein, the supporting construction 10 on light guide plate 1 can for being arranged at least two boss of the neighboring area 200 of its reflecting surface, to ensure the stability supported.Preferably, the height of described at least two boss is consistent.
The height of described boss can be 0.1mm ~ 0.3mm.Described boss can be one-body molded with light guide plate 1, also can arrange separately.
As one preferred embodiment, groove 11 is set at the reflecting surface of light guide plate 1, the region at respective slot 11 place, central area 100 of the reflecting surface of light guide plate 1, and the whole neighboring area 200 of the reflecting surface of light guide plate 1 forms supporting construction 10.
Further, the difference in height on the surface of the neighboring area 200 of the reflecting surface of light guide plate 1 and the surface of central area 100 is 0.1mm ~ 0.3mm, concrete, the high 0.1mm ~ 0.3mm in surface of the surface ratio central area 100 of neighboring area 200.
In this preferred embodiment, supporting construction 10 is one-body molded with light guide plate 1, and structure is more stable, meanwhile, the default material making supporting construction 10, and decrease light guide plate 1 with material, reduce the cost of product.
Owing to having certain spacing between the central area 100 of the reflecting surface of light guide plate 1 and reflector plate 2 in the embodiment of the present invention, under hot and humid environment, reflector plate 2 easily tilts.
In order to solve the problems of the technologies described above, described backlight is set and also comprise fixation kit, for fixation reflex sheet 2, make reflector plate 2 be in tensioning state, prevent it from tilting under hot and humid environment.
As shown in Figure 6, in the embodiment of the present invention, described fixation kit comprises the hangers 20 be fixed on reflector plate 2 and the locating dowel 30 be arranged on backboard 3.Locating dowel 30 is corresponding with the position of hangers 20, and when assembling backlight, hangers 20 hangs in locating dowel 30, makes reflector plate 2 be in tensioning state.
Certainly, the structure for the described fixation kit of fixation reflex sheet 2 is not limited to above-mentioned one.
In a concrete embodiment, groove 11 is set at the reflecting surface of light guide plate 1, the region at respective slot 11 place, central area 100 of the reflecting surface of light guide plate 1, and the whole neighboring area 200 of the reflecting surface of light guide plate 1 forms supporting construction 10.When assembling backlight, reflector plate 2 and light guide plate 1 are successively set on backboard 3, reflector plate 2 are provided with hangers 20, and position corresponding with hangers 20 on backboard 3 is provided with locating dowel 30, and hangers 20 hangs in locating dowel 30, make reflector plate 2 be in tensioning state.The neighboring area 200 of the reflecting surface of light guide plate 1 is supported on reflector plate 2, make the spacing (as: 0.2mm) be consistent between the whole central area 100 of the reflecting surface of light guide plate 1 and reflector plate 2, directly do not contact, avoid light guide plate 1 and the mutual friction of reflector plate 2 phase, cause the problem that the central area 100 of light guide plate 1 reflecting surface is scratched, ensure that the optical property of light guide plate 1, improve the quality of product.
Shown in Figure 4, the backlight in the embodiment of the present invention comprises:
Backboard 3;
Be successively set on the reflector plate 2 on backboard 3 and light guide plate 1, light guide plate 1 comprises exit facet A and the plane of incidence B adjacent with exit facet A, and the reflecting surface relative with exit facet A, the central area 100 of described reflecting surface is provided with light reflection site 9, forms diffuse surface.Described reflecting surface is provided with groove 11, the central area 100 of the corresponding described reflecting surface of groove 11, the whole neighboring area 200 being positioned at periphery, central area 100 forms supporting construction, under the supporting role of the neighboring area 200 of the reflecting surface of light guide plate 1, make the spacing be consistent between the whole central area 100 of the reflecting surface of light guide plate 1 and reflector plate 2.Reflector plate 2 is provided with hangers 20, position corresponding with hangers 20 on backboard 3 is provided with locating dowel 30, and hangers 20 hangs in locating dowel 30, makes reflector plate 2 be in tensioning state;
The side, exit facet A place of light guide plate 1 is provided with optical film material 7, comprises the blooming such as diffusion barrier and brightness enhancement film;
Near the lamp bar 4 that the plane of incidence B of light guide plate 1 is arranged, be specially light emitting diode (Light EmittingDiode, hereinafter referred to as " LED ") lamp bar, comprise multiple LED luminescence unit, LED unit have that development properties is good, long service life, without advantages such as mercury environmental protection;
Glue frame 5, for lightguide plate fixing 1 and optical film material 7.
Also provide a kind of display unit in the embodiment of the present invention, as shown in Figure 4, described display unit comprises display floater 8 and provides the backlight of area source for display floater 8.Described backlight is the backlight in the embodiment of the present invention, thus ensure that the optical property of product, improves the quality of product.
Described display unit can be: any product or parts with Presentation Function such as Electronic Paper, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
As shown in Figure 4, the display unit in the embodiment of the present invention comprises:
Backlight in the embodiment of the present invention;
Display floater 8, is placed on the glue frame 5 of described backlight;
Front frame 6, for fixing assembling display floater 8 and described backlight.
Also provide a kind of preparation method of light guide plate in the embodiment of the present invention, described light guide plate is the light guide plate in the embodiment of the present invention, and described preparation method comprises:
Composition graphs 2 and Fig. 3, and shown in Fig. 7, first mould 12 and the second mould 13 is provided, first mould 12 comprises first surface, the neighboring area of described first surface has the first structure 10 ' of the supporting construction 10 for the formation of light guide plate 1, second mould 13 comprises second surface, the form fit of described second surface and described first surface;
As shown in Figure 8, to box first mould 12 and the second film tool 13, described first surface and second surface are near arranging, and for forming annular seal space between the first mould 12 and the second film tool 13, described annular seal space is consistent with the shape and size of light guide plate 1;
First mould 12 or the second mould 13 are provided with hand-hole, for injecting the material for the manufacture of light guide plate 1 of melting in the annular seal space between the first mould 12 and the second mould 13;
After cooling curing, take the first mould 12 and the second mould 13 apart, form light guide plate 1.
In above-mentioned steps, form light guide plate 1 by Shooting Technique, one-shot forming, manufacture craft is simple.
In order to ensure the optical property of light guide plate 1, the surface roughness arranging the first surface of the first mould 12 and the second surface of the second mould 13 is optical polish rank.
Specifically at least one hand-hole 131 can be set on the second mould 13, and in the annular seal space between the first mould 12 and the second mould 13, inject the material for the manufacture of light guide plate 1 of melting by hand-hole 131.
In the embodiment of the present invention, the central area of the first surface of the first mould 12 is also provided with salient point 9 ' of the light reflection site 9 for the formation of light guide plate 1.
Technical scheme of the present invention is by arranging supporting construction at light guide plate near the neighboring area of the reflecting surface of reflector plate, thus when being assembled into backlight, described supporting construction is supported on described reflector plate, make to keep a determining deviation between the central area of light guide plate reflecting surface and reflector plate, directly do not contact, avoid light guide plate and the mutual friction of reflector plate phase, cause the problem that the central area of light guide plate reflecting surface is scratched, ensure the optical property of light guide plate, improve the quality of product.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.

Claims (10)

1. a light guide plate, comprises exit facet and the reflecting surface relative with described exit facet, it is characterized in that, described reflecting surface comprises central area and is positioned at the neighboring area of periphery, described central area, and the neighboring area of described reflecting surface is provided with supporting construction.
2. light guide plate according to claim 1, is characterized in that, described reflecting surface has groove, and the region at the corresponding described groove place, central area of described reflecting surface, the whole neighboring area of described reflecting surface forms described supporting construction.
3. light guide plate according to claim 2, is characterized in that, the difference in height on the surface of the neighboring area of described reflecting surface and the surface of central area is 0.1mm ~ 0.3mm.
4. light guide plate according to claim 1, is characterized in that, the central area of described reflecting surface is provided with light reflection site, forms diffuse surface.
5. a backlight, the reflector plate comprising backboard and be arranged on described backboard and light guide plate, described light guide plate comprises exit facet and the reflecting surface relative with described exit facet, described reflector plate is arranged on the side, reflecting surface place of described light guide plate, it is characterized in that, described light guide plate is the light guide plate described in any one of claim 1-4, under the effect of the supporting construction of the reflecting surface of described light guide plate, makes to keep a determining deviation between the central area of described reflecting surface and reflector plate.
6. backlight according to claim 5, is characterized in that, described backlight also comprises fixation kit, for fixing described reflector plate, makes described reflector plate be in tensioning state.
7. backlight according to claim 6, is characterized in that, described fixation kit comprises:
Hangers, is fixed on described reflector plate;
Locating dowel, is arranged on described backboard, and corresponding with the position of described hangers, described hangers hangs in described locating dowel, makes described reflector plate be in tensioning state.
8. a display unit, is characterized in that, adopts the backlight described in any one of claim 5-7.
9. a preparation method for the light guide plate described in any one of claim 1-4, is characterized in that, comprising:
First mould and the second mould are provided, described first mould comprises first surface, the neighboring area of described first surface has the first structure of the supporting construction for the formation of described light guide plate, and described second mould comprises second surface, the form fit of described second surface and described first surface;
To the first mould described in box and the second film tool, described first surface and second surface are near arranging, and for forming annular seal space between described first mould and the second film tool, described annular seal space is consistent with the shape and size of described light guide plate;
Described first mould or the second mould are provided with hand-hole, for injecting the material for the manufacture of light guide plate of melting in the annular seal space between described first mould and the second mould;
After cooling curing, take described first mould and the second mould apart, form light guide plate.
10. preparation method according to claim 9, is characterized in that, the central area of the first surface of described first mould is provided with the salient point of the light reflection site for the formation of light guide plate.
CN201510201510.XA 2015-04-24 2015-04-24 Light guide plate, manufacturing method thereof, backlight source and display device Pending CN104763910A (en)

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Application Number Priority Date Filing Date Title
CN201510201510.XA CN104763910A (en) 2015-04-24 2015-04-24 Light guide plate, manufacturing method thereof, backlight source and display device

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CN104763910A true CN104763910A (en) 2015-07-08

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106932939A (en) * 2015-12-29 2017-07-07 乐金显示有限公司 Liquid crystal display device
CN108594530A (en) * 2018-05-02 2018-09-28 佛山博发智能科技有限公司 A kind of energy-saving display panel of light shading type for TPC machines
WO2019000561A1 (en) * 2017-06-30 2019-01-03 武汉华星光电技术有限公司 Liquid crystal display and backlight module therefor
US10634838B2 (en) 2017-06-30 2020-04-28 Wuhan China Star Optoelectronics Technology Co., Ltd. Liquid crystal display and backlight module thereof
CN114660699A (en) * 2022-03-25 2022-06-24 江苏毅昌科技有限公司 Assembly structure of ELED side-entry module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106932939A (en) * 2015-12-29 2017-07-07 乐金显示有限公司 Liquid crystal display device
WO2019000561A1 (en) * 2017-06-30 2019-01-03 武汉华星光电技术有限公司 Liquid crystal display and backlight module therefor
US10634838B2 (en) 2017-06-30 2020-04-28 Wuhan China Star Optoelectronics Technology Co., Ltd. Liquid crystal display and backlight module thereof
CN108594530A (en) * 2018-05-02 2018-09-28 佛山博发智能科技有限公司 A kind of energy-saving display panel of light shading type for TPC machines
CN114660699A (en) * 2022-03-25 2022-06-24 江苏毅昌科技有限公司 Assembly structure of ELED side-entry module

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Application publication date: 20150708