CN102654600B - Light guide board and manufacturing method thereof, backlight source module as well as display device - Google Patents
Light guide board and manufacturing method thereof, backlight source module as well as display device Download PDFInfo
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- CN102654600B CN102654600B CN201110249330.0A CN201110249330A CN102654600B CN 102654600 B CN102654600 B CN 102654600B CN 201110249330 A CN201110249330 A CN 201110249330A CN 102654600 B CN102654600 B CN 102654600B
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- light guide
- magnetic conduction
- guide plate
- conduction particle
- substrate
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Abstract
The invention discloses a light guide board and a manufacturing method thereof, a backlight source module as well as a display device, which are designed for a lot of defects existing in the manufacturing method of the conventional light guide board. The manufacturing method of the light guide board provided by the invention comprises the following steps of: placing nanometer magnetic conduction particles on a substrate; arranging the substrate placed with the nanometer magnetic conduction particles in a controllable magnetic field, so that the nanometer magnetic conduction particles are in magnetic line distribution on the substrate; selecting a set area on the substrate; and placing a light passing board above the set area, and keeping the nanometer magnetic conduction particles in the set area in a magnetic line distribution pattern and fixing the nanometer magnetic conduction particles on the light passing board. The manufacturing method provided by the invention can conveniently adjust the distribution of scattered lattice points of the light guide board; and no pollution exists in a manufacturing process, and the process cost is low. Furthermore, the light guide board provided by the invention uses the nanometer magnetic conduction particles as a lattice point material, thereby enhancing scatter and reflection of light, and improving the emergency efficiency of the light guide board.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to a kind of light guide plate and manufacture method thereof with the scattering netted dot that is magnetic line of force distribution, and the backlight source module that comprises this light guide plate and display device.
Background technology
In the backlight module of LCD (Liquid Crystal Display) industry, light guide plate is one of critical component.At present, the manufacture method of light guide plate adopts print process or laser ablation method mostly.But all there is certain defect in these methods, is in particular in:
(1) print process and laser ablation method need mask plate (Mask), and the design that slightly changes some light guide plate just need to be changed mask plate one time, and the template change technique of making mask plate is loaded down with trivial details and do not have reproducibility, and process costs is just corresponding raising also.
(2) print process need to be by the astigmatic source of height material (SiO
2with TiO
2) being configured to printing slurry, the height of wherein introducing astigmatism source material easily causes environmental pollution.
(3) laser ablation method apparatus expensive, realizes cost high.
Summary of the invention
For the problems referred to above, the invention provides the simple and light guide plate scattering netted dot design of a kind of manufacturing process and facilitate adjustable method for manufacturing light guide plate, the light guide plate that adopts the method to make, and the backlight source module and the display device that are provided with this light guide plate.
For achieving the above object, the manufacture method of light guide plate of the present invention, comprises the steps:
On substrate, place nanometer magnetic conduction particle;
The substrate that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle on described substrate, be the magnetic line of force and distribute;
On described substrate, choose setting regions; And,
Above described setting regions, place light-passing board, and keep magnetic line of force distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions.
Further, described the substrate that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle on described substrate, be the magnetic line of force and distribute; Be implemented as follows:
Below described substrate, place the magnetic device for generation of magnetic field;
According to light guide plate scattering netted dot design requirement, the magnetic field that regulates described magnetic device to produce, controls described nanometer magnetic conduction particle and on described substrate, forms magnetic line of force distribution patterns.
Further, describedly on described substrate, choose setting regions; Be implemented as follows:
According to size and the incidence surface of light guide plate, choose the distributed areas that are applicable to the nanometer magnetic conduction particle of light guide plate scattering netted dot design requirement on described substrate;
Remove the nanometer magnetic conduction particle in non-chosen area on described substrate.
Further, describedly keep magnetic line of force distribution patterns to be fixed on light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions; Be implemented as follows:
Adopt pressure sintering to keep magnetic line of force distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions.
Preferably, described substrate is sheet metal.
Preferably, described nanometer magnetic conduction particle is nano metal ball.
Preferably, the upper surface at described substrate is provided with antistick layer.
For achieving the above object, light guide plate of the present invention, comprising:
Light-passing board; And,
The scattering netted dot consisting of nanometer magnetic conduction particle, described scattering netted dot is magnetic line of force distribution and is arranged on described light-passing board.
Preferably, described nanometer magnetic conduction particle is nano metal ball.
Backlight source module of the present invention, comprises the light guide plate of said structure.
Display device of the present invention, comprises above-mentioned backlight source module.
The present invention be take nanometer magnetic conduction particle as light guide plate scattering netted dot, and by substrate, the magnetic line of force that utilizes controllable magnetic field to make nanometer magnetic conduction particle form density gradual change on substrate distributes, and finally the nanometer magnetic conduction particle in selected magnetic line of force region is fixed on light-passing board.Adopt method for manufacturing light guide plate of the present invention, without introducing mask plate, can regulate easily scattering netted dot to distribute, manufacture process is convenient pollution-free, and process costs is low, has greatly improved the design cycle of light guide plate scattering netted dot and the manufacturing cycle of light guide plate.
In addition, it is scattering netted dot material, especially nano metal ball that light guide plate of the present invention adopts nanometer magnetic conduction particle, after hot pressing, can form good adhesion with light guide plate, can effectively strengthen light guide plate to the scattering of light and reflection, improves the light extraction efficiency of light guide plate.In addition, light guide plate of the present invention can not cause raw-material waste in manufacture process, and the nanometer magnetic conduction particle in non-selected region is recyclable and reuse.
Accompanying drawing explanation
Fig. 1 is that the nanometer magnetic conduction particle being placed on the substrate in magnetic field is the schematic diagram that the magnetic line of force distributes;
Fig. 2 is the schematic diagram in selected magnetic line of force region on described substrate;
Fig. 3 is the schematic diagram after the nanometer magnetic conduction particle of removing in non-selected region;
Fig. 4 adopts pressure sintering nanometer magnetic conduction particle to be pressed on to the schematic diagram of the light guide plate after light-passing board;
Fig. 5 is the schematic diagram of a specific embodiment of light guide plate of the present invention while using in conjunction with LED lamp bar.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
In conjunction with Fig. 1 to Fig. 4, the manufacture method of light guide plate of the present invention, comprises the steps:
On substrate 2, place nanometer magnetic conduction particle;
The substrate 2 that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle on described substrate 2, be the magnetic line of force 1 and distribute, as shown in Figure 1;
On described substrate, choose setting regions 4, as shown in Figure 2;
Above described selection area 4, place light-passing board, and keep the magnetic line of force 1 distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions 4, as shown in Figure 4, complete the preparation of light guide plate 5.
Wherein, the effect of substrate 2 of the present invention is carrying nanometer magnetic conduction particles, to realize magnetic field, the distribution of nanometer magnetic conduction particle is controlled.In addition, at the upper surface of described substrate 2, be provided with antistick layer, can guarantee that so all nanometer magnetic conduction particles in setting regions all can be fixed on described light-passing board.
As embodiment further of the present invention, in the manufacture method step of above-mentioned light guide plate, step wherein: the substrate 2 that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle be the magnetic line of force on described substrate 2 and distribute; Be implemented as follows:
Below described substrate 2, place the magnetic device 3 for generation of magnetic field, as shown in fig. 1;
According to the design requirement of the scattering netted dot of light guide plate, the magnetic field that regulates described magnetic device 3 to produce, controls described nanometer magnetic conduction particle and on described substrate, forms magnetic line of force distribution patterns, the magnetic line of force presenting in Fig. 1 just specific embodiment that distributes.Be not limited only to this, magnetic device of the present invention can be according to the design requirement of light guide plate, as: the size of light guide plate, the features (linear light sorurce or pointolite) of the mode of incident light source (straight-down negative or side entering type) and incident light source etc., the magnetic line of force that regulates magnetic field to make the formation of nanometer magnetic conduction particle meet design requirement distributes.Wherein, described substrate can be selected any material of not having a magnetic screening action.
As the present invention embodiment further, in the manufacture method step of above-mentioned light guide plate, step wherein: choose setting regions on described substrate 2; Be implemented as follows:
Elected reserving after magnetic line of force distribution, also need size and incidence surface according to designed light guide plate, choose the distributed areas that are applicable to the nanometer magnetic conduction particle of light guide plate scattering netted dot design requirement on described substrate 2, to improve the homogeneity of light guide plate bright dipping, as shown in Figure 2;
Behind selected good distributed areas, remove the nanometer magnetic conduction particle in non-selected region on described substrate 2, after removal as shown in Figure 3; And the nanometer magnetic conduction particle in territory, non-election district is reclaimed, stay to use next time, avoid the waste of material.
As the present invention embodiment further again, in the manufacture method step of above-mentioned light guide plate, step wherein: keep magnetic line of force distribution patterns to be fixed on light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions; Be implemented as follows:
Adopt pressure sintering to keep magnetic line of force distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions, form light guide plate as shown in Figure 4.
In the present embodiment, adopt pressure sintering that described nanometer magnetic conduction particle is fixed on described light-passing board, described substrate should have thermotolerance, be preferably sheet metal, and on this sheet metal, there is one deck antistick layer, after adopting pressure sintering, can effectively guarantee that the nanometer magnetic conduction particle on described sheet metal is all fixed on described light-passing board.
In the various embodiments described above, described nanometer magnetic conduction particle is preferably nano metal ball, and described nano metal ball can effectively improve light guide plate to the scattering of light and reflection, improves the light extraction efficiency of light guide plate.
As shown in Figure 4, light guide plate 5 of the present invention, comprising:
Light-passing board; And,
The scattering netted dot consisting of nanometer magnetic conduction particle, described scattering netted dot is magnetic line of force distribution and is arranged on described light-passing board.
Wherein, in actual applications, described nanometer magnetic conduction particle can be nano metal ball, and nano metal ball is as light guide plate mesh point material, and it has high scattered power and reflectivity.
The distribution of the nanometer magnetic conduction particle shown in Fig. 4 is a specific embodiment of the present invention.Nanometer magnetic conduction distribution of particles in light guide plate of the present invention, can, according to the feature (line source or pointolite) of the size of light guide plate, the incident light source mode that light guide plate is used (direct-insert or side entering type) and light guide plate incident light, regulate.The process regulating is by regulating magnetic device, and the magnetic line of force that forms design under the magnetic fields that nanometer magnetic conduction particle is produced at magnetic device distributes, then according to design requirement selection area; Last again by the nanometer magnetic conduction particle hot pressing of selection area to the light guide plate that can be prepared into design on light-passing board.
Light guide plate shown in Fig. 45, is suitable for using LED (Light Emitting Diode) pointolite to adopt side entering type incident.Fig. 5 is light guide plate shown in Fig. 45 in use, with the relative position schematic diagram of LED lamp bar 6.
No matter be to adopt CCFL (Cold Cathode Fluorescent Lamp, cathode fluorescent tube), EEFL (External Electrode Fluorescent Lamp, external electrode fluorescence lamp) linear light source such as, or the light guide plate of the pointolites such as LED, no matter be to adopt directly-down light source or the light guide plate of side entering type light source, all can adopt the manufacture method of light guide plate of the present invention to make.
Backlight source module of the present invention, comprises the light guide plate of structure described in above-described embodiment, as shown in Figure 4.
Display device of the present invention, comprises backlight source module, and the light guide plate in this backlight source module is structure light guide plate described in above-described embodiment.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (4)
1. a manufacture method for light guide plate, is characterized in that: comprise the steps:
On substrate, place nanometer magnetic conduction particle;
The substrate that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle on described substrate, be the magnetic line of force and distribute;
Described the substrate that is placed with nanometer magnetic conduction particle is placed in to controllable magnetic field, makes described nanometer magnetic conduction particle on described substrate, be the magnetic line of force and distribute, specifically comprise: below described substrate, place the magnetic device for generation of magnetic field; According to light guide plate scattering netted dot design requirement, the magnetic field that regulates described magnetic device to produce, controls described nanometer magnetic conduction particle and on described substrate, forms magnetic line of force distribution patterns;
On described substrate, choose setting regions; And,
Above described setting regions, place light-passing board, and keep magnetic line of force distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions;
Describedly keep magnetic line of force distribution patterns to be fixed on light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions, specifically comprise: adopt pressure sintering to keep magnetic line of force distribution patterns to be fixed on described light-passing board on the nanometer magnetic conduction particle that is positioned at described setting regions.
2. the manufacture method of light guide plate according to claim 1, is characterized in that, describedly on described substrate, chooses setting regions; Be implemented as follows:
According to size and the incidence surface of light guide plate, choose the distributed areas that are applicable to the nanometer magnetic conduction particle of light guide plate scattering netted dot design requirement on described substrate;
Remove the nanometer magnetic conduction particle in non-chosen area on described substrate.
3. the manufacture method of light guide plate according to claim 1, is characterized in that, described substrate is sheet metal.
4. according to the manufacture method of light guide plate described in any in claims 1 to 3, it is characterized in that, at the upper surface of described substrate, be provided with antistick layer.
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| CN201110249330.0A CN102654600B (en) | 2011-08-26 | 2011-08-26 | Light guide board and manufacturing method thereof, backlight source module as well as display device |
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| CN201110249330.0A CN102654600B (en) | 2011-08-26 | 2011-08-26 | Light guide board and manufacturing method thereof, backlight source module as well as display device |
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| CN102654600B true CN102654600B (en) | 2014-03-26 |
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| CN106405880B (en) * | 2016-11-21 | 2019-03-19 | 青岛海信电器股份有限公司 | Mangneto adjustable refractive index material, film, light guide plate, backlight module and display equipment |
| CN108051886B (en) * | 2017-12-29 | 2020-10-20 | 厦门市京骏科技有限公司 | Light guide plate containing magnetic quantum dots and preparation method thereof |
| CN108957620B (en) * | 2018-08-01 | 2020-07-07 | 京东方科技集团股份有限公司 | Light guide plate, preparation method of light guide plate, backlight module and display device |
| CN114879437B (en) * | 2022-05-17 | 2023-07-25 | 深圳市火乐科技发展有限公司 | Dodging device, projection optical machine and projection equipment |
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| CN1725078A (en) * | 2004-07-24 | 2006-01-25 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate |
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| JPH0876117A (en) * | 1994-09-07 | 1996-03-22 | Hitachi Ltd | Production of liquid crystal display device |
| CN1921156A (en) * | 2005-08-26 | 2007-02-28 | 鸿富锦精密工业（深圳）有限公司 | Luminous dipolar object light source module and and method for preparing same |
| US8040461B2 (en) * | 2009-10-13 | 2011-10-18 | Entire Technology Co., Ltd. | Compound diffusion plate structure, backlight module, and liquid crystal display |
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| CN1725078A (en) * | 2004-07-24 | 2006-01-25 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate |
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