CN104155715A - Light guide device, backlight module group and display device - Google Patents
Light guide device, backlight module group and display device Download PDFInfo
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- CN104155715A CN104155715A CN201410338876.7A CN201410338876A CN104155715A CN 104155715 A CN104155715 A CN 104155715A CN 201410338876 A CN201410338876 A CN 201410338876A CN 104155715 A CN104155715 A CN 104155715A
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- light guide
- guide plate
- electrode
- guiding device
- transparency
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Abstract
The invention relates to the field of display technologies, and discloses a light guide device, a backlight module group and a display device, wherein the light guide device comprises a light guide plate made from a transparent material, and at least one pair of electrodes; a plurality of lattice points are arranged in the light guide plate; each lattice point comprises a cavity chamber, and white cataphoresis particles; the cavity chamber is formed in the light guide plate; the white cataphoresis particles are arranged in the cavity chamber; the electrodes are used for forming electric field in lattice points when in electrification; the electric field is parallel to the light-emitting surface of the light guide plate. When the light guide device is out of a working state, the lattice point structure on the light guide plate cannot be seen; the transparent effect is good; the transparent displaying effect of the displaying device can be improved by utilizing the light guide device.
Description
Technical field
The present invention relates to display technique field, be specifically related to a kind of guiding device, backlight module and display device.
Background technology
Transparent display is showing screen display image when in running order, and in the time of off working state, transmission display screen can be seen the object at the display screen back side, is generally to adopt LCD or the OLED of high permeability to prepare transparent display.
Display device provides light source by backlight module, and conventional transparent display device, in the time that off working state need not be backlight, can see the site in light guide plate in backlight module, thereby transparent effect is bad.
Summary of the invention
The invention provides a kind of guiding device, backlight module and display device, wherein, guiding device, in the time of off working state, can not seen the lattice point structure in light guide plate, and transparent effect is good.
For achieving the above object, the invention provides following technical scheme:
A kind of guiding device, comprising:
The light guide plate of being made by transparent material; Described light guide plate inside is provided with multiple sites, and described in each, site comprises the chamber that is formed at described light guide plate inside and the white electrophoretic particles that is positioned at chamber;
At least one pair of electrode that is used for forming while energising electric field in the each described site of light guide plate, described electric field is parallel with described light guide plate exiting surface.
In above-mentioned guiding device, light guide plate inside is provided with site, and site is made up of the white electrophoretic particles that is formed at the chamber of described light guide plate inside and is positioned at chamber, guiding device is provided with at least one pair of electrode, when energising, can in the each described site of light guide plate, form the electric field parallel with described light guide plate exiting surface.In the time that guiding device is in running order, electrode no power, now, white electrophoretic particles is due to mutually exclusive with identical charges, thereby be uniformly distributed in chamber interior, under the scattering of the white electrophoretic particles of the light now entering from light guide plate incidence surface lattice point structure, by exiting surface outgoing, provide backlight thereby be embodied as display panel; When guiding device is during in off working state, by electrifying electrodes, now, in the each described site of light guide plate, form the electric field parallel with described light guide plate exiting surface, white electrophoretic particles can move until be gathered on the side of chamber perpendicular to light guide plate exiting surface under the effect of electric field, thereby this guiding device can present pellucidity; Because light guide plate is made up of transparent material, now, look from the exiting surface of light guide plate, site place and the same printing opacity of material around, can not see lattice point structure, therefore, this guiding device can present very high transmittance, transparent effect is good, thereby utilizes this guiding device can improve the transparent display effect of display device.
In preferred embodiment, described at least one pair of electrode is two pairs, and described in each, electrode is relative with a side of described light guide plate, and wherein, the electrode relative with described light guide plate incidence surface is transparency electrode.
In preferred embodiment, in described two pairs of electrodes, remove the electrode relative with described light guide plate incidence surface, other three electrodes are for adopting materials of aluminum Al preparation.
In preferred embodiment, point to the direction of the opposite side relative with described light guide plate incidence surface along described light guide plate incidence surface one side, the surface area that described chamber is parallel to described light guide plate exiting surface becomes large gradually.This kind of design can make the scattered light light distribution of outgoing more even.
In preferred embodiment, point to the direction of the opposite side relative with described light guide plate incidence surface along described light guide plate incidence surface one side, the distribution of described chamber is more and more intensive.This kind of design can make the scattered light light distribution of outgoing more even.
In preferred embodiment, described guiding device also comprises: reflection horizon, and described reflection horizon comprises:
The first transparency carrier, the second transparency carrier that are oppositely arranged; Described the first transparency carrier is parallel with the exiting surface of described light guide plate with described the second transparency carrier, and the peripheral sealing of described the first transparency carrier and the second transparency carrier coordinates to form the annular seal space between described the first transparency carrier and the second transparency carrier; Described the first transparency carrier is provided with the first transparency electrode towards the one side of described the second transparency carrier, described the second transparency carrier is provided with the second transparency electrode towards the one side of described the first transparency carrier, and described the first transparency electrode and the second transparency electrode have platy structure;
Be positioned at described annular seal space, described annular seal space is divided into multiple bar shaped transparency electrodes in multiple regions, between described multiple bar shaped transparency electrodes, be parallel to each other, described in each, intra-zone has white electrophoretic particles.
Above-mentioned reflection horizon, in the time that guiding device is in running order, this reflection horizon can be realized reflection of light effect, and when guiding device is during in off working state, this reflection horizon can present pellucidity.In the time that guiding device is in running order, by first transparency electrode in reflection horizon and the energising of the second transparency electrode, make to form and can make the electric field of white electrophoretic particles towards the first transparency electrode direction motion at each intra-zone, white electrophoretic particles moves until be gathered in surface one side that the first transparency electrode deviates from the first transparency carrier under the effect of electric field, and due to identical charges, white electrophoretic particles distributes along this surface uniform, now, if there is light to enter into reflection horizon from light guide plate, will be subject to getting back to light guide plate inside in the reflection of the white electrophoretic particles of reflection horizon the first transparency electrode surface one side, thereby realize the effect in reflection horizon, when guiding device is during in off working state, by the bar shaped transparency electrode energising in reflection horizon, make to form and can make the electric field of white electrophoretic particles towards the bar shaped transparency electrode direction motion electrically contrary with it at each intra-zone, white electrophoretic particles moves until gather bar shaped transparency electrode surface one side electrically contrary with it under the effect of electric field, and due to identical charges, white electrophoretic particles is uniformly distributed along the side of this transparency electrode, now, look from light guide plate exiting surface, can not see the white electrophoretic particles of inside, reflection horizon, because the inner all electrodes in reflection horizon are all made up of transparent material, so, whole reflection horizon presents pellucidity, and, light guide plate is now also transparent, thereby can make whole guiding device present pellucidity.
In preferred embodiment, described white electrophoretic particles is TiO
2particle or SiO
2particle.
The present invention also provides a kind of backlight module, comprises light source, also comprises any one guiding device that technique scheme provides, and described light source is arranged in incidence surface one side of described guiding device light guide plate.This backlight module can present the pellucidity that transmitance is very high in the time of off working state.
The present invention also provides a kind of display device, comprises transparent display panel, also comprises the backlight module that technique scheme provides; The light guide plate of described backlight module is positioned at the light inlet side of described transparent display panel.This display device can realize good transparent display effect in the time of off working state.
In preferred embodiment, described transparent display panel is only provided with analyzing polaroid in bright dipping side; Between the described light source of described backlight module and the incidence surface of described light guide plate, be provided with wilfully mating plate.The wilfully mating plate that rises of conventional transparent display panel is placed between light source and light guide plate, now, along the direction perpendicular to transparent display panel exiting surface, this transparent display panel has been lacked one with respect to conventional transparent display panel and has been played wilfully mating plate, thereby, can improve the transparent display effect of this display device in the time of off working state.
Brief description of the drawings
The guiding device structural representation that Fig. 1 provides for an embodiment of the present invention;
The structural representation of the guiding device that Fig. 2 provides for an embodiment of the present invention under in working order;
The structural representation of the guiding device that Fig. 3 provides for an embodiment of the present invention under off working state;
The structural representation of the reflection horizon that Fig. 4 provides for an embodiment of the present invention under guiding device duty;
The structural representation of the reflection horizon that Fig. 5 provides for an embodiment of the present invention under guiding device off working state;
The display device structure schematic diagram that Fig. 6 provides for an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the guiding device structural representation that Fig. 1 provides for an embodiment of the present invention; The structural representation of the guiding device that Fig. 2 provides for an embodiment of the present invention under in working order; The structural representation of the guiding device that Fig. 3 provides for an embodiment of the present invention under off working state.
As shown in Figure 1, the guiding device that the embodiment of the present invention provides, comprising:
The light guide plate 1 of being made by transparent material; Light guide plate 1 inside is provided with multiple sites 2, and each site 2 comprises the chamber 20 that is formed at light guide plate 1 inside and the white electrophoretic particles 21 that is positioned at chamber 20;
While being used for switching on, at least one pair of electrode of the interior formation electric field in each site 2 of light guide plate 1, electric field is parallel with light guide plate 1 exiting surface.
As shown in Figure 1, in above-mentioned guiding device, light guide plate 1 inside is provided with site 2, and site 2 is made up of the white electrophoretic particles 21 that is formed at the chamber 20 of light guide plate 1 inside and is positioned at chamber 20, guiding device is provided with at least one pair of electrode, can be at the interior formation in each site 2 of light guide plate 1 electric field parallel with light guide plate 1 exiting surface when energising.As shown in Figure 2, in the time that guiding device is in running order, electrode no power, now, white electrophoretic particles 21 due to mutually exclusive with identical charges, thereby be uniformly distributed in chamber 20 inside, now, under the scattering of the white electrophoretic particles 21 of the light entering from light guide plate 1 incidence surface 2 structures of site, by exiting surface outgoing, provide backlight thereby can be implemented as display panel; As shown in Figure 3, when guiding device is during in off working state, by electrifying electrodes, now, at the interior formation in each site 2 of light guide plate 1 electric field parallel with light guide plate 1 exiting surface, white electrophoretic particles 21 moves until be gathered on the side of chamber 20 perpendicular to light guide plate 1 exiting surface under the effect of electric field, thereby this guiding device presents pellucidity; Because light guide plate 1 is made up of transparent material, now, look from light guide plate 1 exiting surface, 2 places, site and the same printing opacity of material around, can not see site 2 structures, therefore, this guiding device can present very high transmittance, transparent effect is good, thereby utilizes this guiding device can improve the transparent display effect of display device.
In a kind of preferred implementation, the electrode being provided with in above-mentioned guiding device is two pairs, and each electrode is relative with a side of light guide plate 1, as shown in Figure 1, guiding device is provided with the electrode relative with the side a of light guide plate 1 31, the electrode 32 relative with side c, the electrode 33 relative with side b, the electrode 34 relative with side d, and wherein, the side a that sets light guide plate 1 is incidence surface, electrode 31 is transparency electrode, can reduce the impact of electrode 31 on light guide plate 1 incidence surface transmittance.
Preferably, above-mentioned each electrode is in the time of energising, can be that electrode 31 is identical with the polarity of electrode 33, simultaneously, electrode 32 is identical with the polarity of electrode 34, and the polarity of electrode 31 is contrary with the polarity of electrode 32, with can be at the interior formation electric field in each site 2, white electrophoretic particles 21 in each site 2 is moved, until be gathered on the side of chamber 20 perpendicular to light guide plate 1 exiting surface closing under electric field action of each electrode.
Particularly, electrode 31 and electrode 33 connect negative polarity, and electrode 32 and electrode 34 connect positive polarity.
In a kind of preferred implementation, above-mentioned electrode 32, electrode 33 and electrode 34 can be selected the electrode that adopts opaque material to prepare, the materials such as aluminium Al as higher in reflectivity, thereby prevent that the light in light guide plate 1 from penetrating light guide plate from side b, side c and the side d of light guide plate 1, and then can improve the utilization factor of light.
On the basis of above-described embodiment, one preferred embodiment in, the incidence surface of setting light guide plate 1 is side a, along the direction of side a mono-side points sideways c mono-side of light guide plate, the surface area that chamber 20 is parallel to light guide plate 1 exiting surface becomes large gradually, and/or the spacing between every two adjacent chambers 20 diminishes gradually.
As shown in fig. 1, the area of the surperficial f of chamber 202 is greater than the area of the surperficial e of chamber 201, and the area of the surperficial g of chamber 203 is greater than the area of the surperficial f of chamber 202, and the area of the surperficial h of chamber 204 is greater than the area of the surperficial g of chamber 203; And/or,
Spacing between chamber 201 and chamber 202 is apart from d
1, the spacing between chamber 202 and chamber 203 is apart from d
2, the spacing between chamber 203 and chamber 204 is apart from d
3, wherein, apart from d
3be greater than apart from d
2, apart from d
2be greater than apart from d
1.
As shown in Figure 2, because light enters light guide plate 1 from the side a of light guide plate 1, therefore point to the direction of side c mono-side of light guide plate from side a mono-side of light guide plate 1, light intensity weakens gradually, and that chamber 20 is parallel to the surface area of light guide plate 1 exiting surface is larger, and/or, distance between every two adjacent chambers 20 is less, the possibility that light is subject to white electrophoretic particles 21 scatterings in chamber 20 is just larger, therefore the light of launching from light guide plate 1 exiting surface due to scattering is just more, thereby makes the light distribution of light of light guide plate 1 exiting surface outgoing more even.
Please refer to Fig. 4 and Fig. 5, the structural representation of the reflection horizon that Fig. 4 provides for an embodiment of the present invention under guiding device duty; The structural representation of the reflection horizon that Fig. 5 provides for an embodiment of the present invention under guiding device off working state.
On the basis of the various embodiments described above, one preferred embodiment in, as shown in Figure 1, guiding device also comprises: reflection horizon 4, as shown in Figure 4 and Figure 5, reflection horizon 4 comprises:
The first transparency carrier 51, the second transparency carrier 52 that are oppositely arranged; The first transparency carrier 51 is parallel with the exiting surface of light guide plate 1 with the second transparency carrier 52, and the peripheral sealing of the first transparency carrier 51 and the second transparency carrier 52 coordinates to form the annular seal space between the first transparency carrier 51 and the second transparency carrier 52; The first transparency carrier 51 is provided with the first transparency electrode 61, the second transparency carriers 52 towards the one side of the second transparency carrier 52 and is provided with the second transparency electrode 62, the first transparency electrodes 61 and the second transparency electrode 62 has platy structure towards the one side of the first transparency carrier 51;
Be positioned at annular seal space, annular seal space is divided into multiple bar shaped transparency electrodes 7 in multiple regions, and each intra-zone has white electrophoretic particles 21, is parallel to each other and annular seal space is separated into multiple regions between bar shaped transparency electrode 7.
Above-mentioned reflection horizon 4, in the time that guiding device is in running order, this reflection horizon 4 can be realized reflection of light effect, and when guiding device is during in off working state, this reflection horizon 4 can present pellucidity.As shown in Figure 4, in the time that guiding device is in running order, first transparency electrode 61 in reflection horizon 4 and the second transparency electrode 62 are switched on, make to form and can make the electric field of white electrophoretic particles 21 towards the first transparency electrode 61 direction motions at each intra-zone, white electrophoretic particles 21 moves until be gathered in surface one side that the first transparency electrode 61 deviates from the first transparency carrier 51 under the effect of electric field, and due to identical charges, white electrophoresis 21 distributes along this surface uniform, now, if there is light to enter into reflection horizon 4 from light guide plate 1, will be subject to the reflection of the white electrophoretic particles 21 of the surperficial side of the first transparency electrode 61 in reflection horizon 4 and get back to light guide plate 1 inside, thereby realize the effect in reflection horizon 4, as shown in Figure 5, when guiding device is during in off working state, the bar shaped transparency electrode 7 in reflection horizon 4 is switched on, make to form and can make the electric field of white electrophoretic particles 21 towards the bar shaped transparency electrode direction motion electrically contrary with it at each intra-zone, white electrophoretic particles 21 moves until gather bar shaped transparency electrode surface one side electrically contrary with it under the effect of electric field, and due to identical charges, white electrophoretic particles 21 is uniformly distributed along the side of this transparency electrode 7, now, look from light guide plate 1 exiting surface, can not see the white electrophoretic particles 21 of 4 inside, reflection horizon, because the inner all electrodes in reflection horizon 4 are all made up of transparent material, so, whole reflection horizon 4 is pellucidity, and, light guide plate 1 is now also transparent, thereby whole guiding device can be pellucidity.
On the basis of the various embodiments described above, one preferred embodiment in, white electrophoretic particles 21 can be TiO
2particle or SiO
2particle.
The embodiment of the present invention provides a kind of backlight module, comprises light source 8, also comprises the guiding device that above-mentioned any embodiment provides, and light source 8 is arranged in incidence surface one side of guiding device light guide plate 1.This backlight module can present the pellucidity that transmittance is very high in the time of off working state.
As shown in Figure 6, the embodiment of the present invention provides a kind of display device, comprises transparent display panel 9, also comprises above-mentioned backlight module; The light guide plate 1 of backlight module is positioned at the light inlet side of transparent display panel 9.This display device can realize good transparent display effect in the time of off working state.
On the basis of above-described embodiment, one preferred embodiment in, transparent display panel 9 is only provided with analyzing polaroid 102 in bright dipping side; Between the light source 8 of backlight module and the incidence surface of light guide plate 1, be provided with wilfully mating plate 101.The wilfully mating plate 101 that rises of conventional display panels is placed between light source 8 and light guide plate 1, now, along the direction perpendicular to transparent display panel 9 exiting surfaces, this transparent display panel 9 has been lacked one with respect to conventional display panels and has been played wilfully mating plate 101, thereby, improved the transparent display effect of this display device in the time of off working state.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the embodiment of the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a guiding device, is characterized in that, comprising:
The light guide plate of being made by transparent material; Described light guide plate inside is provided with multiple sites, and described in each, site comprises the chamber that is formed at described light guide plate inside and the white electrophoretic particles that is positioned at chamber;
At least one pair of electrode that is used for forming while energising electric field in the each described site of light guide plate, described electric field is parallel with described light guide plate exiting surface.
2. guiding device according to claim 1, is characterized in that, described at least one pair of electrode is two pairs, and described in each, electrode is relative with a side of described light guide plate, and wherein, the electrode relative with described light guide plate incidence surface is transparency electrode.
3. guiding device according to claim 2, is characterized in that, in described two pairs of electrodes, removes the electrode relative with described light guide plate incidence surface, and other three electrodes are for adopting materials of aluminum preparation.
4. guiding device according to claim 1, is characterized in that,
The direction of pointing to the opposite side relative with described light guide plate incidence surface along described light guide plate incidence surface one side, the surface area that described chamber is parallel to described light guide plate exiting surface becomes large gradually.
5. guiding device according to claim 1, is characterized in that,
The direction of pointing to the opposite side relative with described light guide plate incidence surface along described light guide plate incidence surface one side, the distribution of described chamber is more and more intensive.
6. guiding device according to claim 1, is characterized in that, also comprises: reflection horizon, and described reflection horizon comprises:
The first transparency carrier, the second transparency carrier that are oppositely arranged; Described the first transparency carrier is parallel with the exiting surface of described light guide plate with described the second transparency carrier, and the peripheral sealing of described the first transparency carrier and the second transparency carrier coordinates to form the annular seal space between described the first transparency carrier and the second transparency carrier; Described the first transparency carrier is provided with the first transparency electrode towards the one side of described the second transparency carrier, described the second transparency carrier is provided with the second transparency electrode towards the one side of described the first transparency carrier, and described the first transparency electrode and the second transparency electrode have platy structure;
Be positioned at described annular seal space, described annular seal space is divided into multiple bar shaped transparency electrodes in multiple regions, between described multiple bar shaped transparency electrodes, be parallel to each other, described in each, intra-zone has white electrophoretic particles.
7. according to the guiding device described in claim 1～6 any one, it is characterized in that, described white electrophoretic particles is TiO
2particle or SiO
2particle.
8. a backlight module, comprises light source, it is characterized in that, also comprises the guiding device as described in claim 1～7 any one, and described light source is arranged in incidence surface one side of described guiding device light guide plate.
9. a display device, comprises display panel, it is characterized in that, also comprises backlight module as claimed in claim 8; The light guide plate of described backlight module is positioned at the light inlet side of described display panel.
10. display device according to claim 9, is characterized in that, described display panel is only provided with analyzing polaroid in bright dipping side; Between the described light source of described backlight module and the incidence surface of described light guide plate, be provided with wilfully mating plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338876.7A CN104155715B (en) | 2014-07-16 | 2014-07-16 | A kind of guiding device, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338876.7A CN104155715B (en) | 2014-07-16 | 2014-07-16 | A kind of guiding device, backlight module and display device |
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| CN104155715A true CN104155715A (en) | 2014-11-19 |
| CN104155715B CN104155715B (en) | 2017-06-30 |
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| CN201410338876.7A Expired - Fee Related CN104155715B (en) | 2014-07-16 | 2014-07-16 | A kind of guiding device, backlight module and display device |
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| CN111290068A (en) * | 2020-02-26 | 2020-06-16 | 武汉华星光电技术有限公司 | Light guide plate, backlight module and manufacturing method of light guide plate |
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|---|---|
| CN104155715B (en) | 2017-06-30 |
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