CN104155715B - A kind of guiding device, backlight module and display device - Google Patents
A kind of guiding device, backlight module and display device Download PDFInfo
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- CN104155715B CN104155715B CN201410338876.7A CN201410338876A CN104155715B CN 104155715 B CN104155715 B CN 104155715B CN 201410338876 A CN201410338876 A CN 201410338876A CN 104155715 B CN104155715 B CN 104155715B
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- guide plate
- light guide
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Abstract
The present invention relates to display technology field, a kind of guiding device, backlight module and display device are disclosed, wherein, guiding device includes：The light guide plate being made of clear material；The light guide plate is internally provided with multiple sites, and each described site includes being formed at the chamber inside the light guide plate and the white electrophoretic particles in chamber；At least one pair of electrode of electric field is formed during for being powered in each described site of light guide plate, the electric field is parallel with the light guide plate exiting surface.The guiding device is in off working state, and the lattice point structure that will not be seen on light guide plate, transparent effect is good, and the Transparence Display effect of display device can be improved using the guiding device.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of guiding device, backlight module and display device.
Background technology
Transparent display, the display image on a display screen when in running order, in off working state through aobvious
Display screen can see the object at the display screen back side, usually prepare transparent display using the LCD or OLED of high transmittance.
Display device provides light source by backlight module, and conventional transparent display device is without backlight in off working state
When, it can be seen that the site in backlight module on light guide plate, so that transparent effect is bad.
The content of the invention
The invention provides a kind of guiding device, backlight module and display device, wherein, guiding device is in off working state
When, the lattice point structure that will not be seen on light guide plate, transparent effect is good.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of guiding device, including：
The light guide plate being made of clear material；The light guide plate is internally provided with multiple sites, each described site bag
Include the chamber and the white electrophoretic particles in chamber being formed inside the light guide plate；
During for being powered in each described site of light guide plate formed electric field at least one pair of electrode, the electric field with it is described
Light guide plate exiting surface is parallel.
In above-mentioned guiding device, light guide plate is internally provided with site, and site is formed from the chamber inside the light guide plate
Room and the white electrophoretic particles in chamber are constituted, and guiding device is provided with least one pair of electrode, can led during energization
The electric field parallel with the light guide plate exiting surface is formed in each described site of tabula rasa.When guiding device is in running order,
Electrode no power, now, white electrophoretic particles due to mutually exclusive with identical charges, so as to uniformly divide in chamber interior
Cloth, by exiting surface outgoing under the scattering of white electrophoretic particles of the light for now entering from light guide plate incidence surface in lattice point structure,
Backlight is provided so as to be embodied as display panel；When guiding device is in off working state, electrode is powered, now, in leaded light
The electric field parallel with the light guide plate exiting surface is formed in each described site of plate, white electrophoretic particles can be in the effect of electric field
It is lower to move until being gathered in chamber on the side of light guide plate exiting surface, so that the guiding device can show transparence
State；It is now, saturating as adjacent material at site as viewed from the exiting surface of light guide plate because light guide plate is made of clear material
Light, not can be appreciated that lattice point structure, therefore, the guiding device can show light transmittance very high, and transparent effect is good, so as to utilize
The guiding device can improve the Transparence Display effect of display device.
In preferred embodiment, described at least one pair of electrode is two pairs, and each described electrode and the light guide plate
One side is relative, wherein, the electrode relative with the light guide plate incidence surface is transparency electrode.
In preferred embodiment, in the two pairs of electrodes, the electrode relative with the light guide plate incidence surface is removed, in addition three
Individual electrode is to be prepared using materials of aluminum Al.
In preferred embodiment, pointed to along the light guide plate incidence surface side relative with the light guide plate incidence surface another
The direction of side, the chamber becomes larger parallel to the surface area of the light guide plate exiting surface.This kind of design can make outgoing
Scattering light light distribution it is more uniform.
In preferred embodiment, pointed to along the light guide plate incidence surface side relative with the light guide plate incidence surface another
The direction of side, the distribution of the chamber is more and more intensive.This kind of design can make the scattering light light distribution of outgoing more uniform.
In preferred embodiment, the guiding device also includes：Reflecting layer, the reflecting layer includes：
The first transparency carrier, the second transparency carrier being oppositely arranged；First transparency carrier and the second transparent base
Plate is parallel with the exiting surface of the light guide plate, and the peripheral sealing of first transparency carrier and the second transparency carrier coordinates with shape
Into positioned at the annular seal space between first transparency carrier and the second transparency carrier；First transparency carrier is towards described second
The one side of transparency carrier is provided with first transparency electrode, and second transparency carrier is provided with towards the one side of first transparency carrier
Second transparency electrode, the first transparency electrode and second transparency electrode have platy structure；
Multiple bar shaped transparency electrodes in the annular seal space, so that the annular seal space to be divided into multiple regions, it is described
It is parallel to each other between multiple bar shaped transparency electrodes, each described intra-zone has white electrophoretic particles.
Above-mentioned reflecting layer, when guiding device is in running order, the reflecting layer can realize the reflex to light, when
When guiding device is in off working state, the reflecting layer can be presented pellucidity.When guiding device is in running order, will
The first transparency electrode in reflecting layer is powered with second transparency electrode so that being formed in each intra-zone can make white electrophoretic
The electric field that particle is moved towards first transparency electrode direction, white electrophoretic particles are moved in the presence of electric field until being gathered in
One transparency electrode deviates from the surface side of the first transparency carrier, and because with identical charges, white electrophoretic particles are along the surface
It is uniformly distributed, now, if light enters into reflecting layer from light guide plate, will be subject on reflecting layer first transparency electrode surface one
The reflection of the white electrophoretic particles of side and return to inside light guide plate, so as to realize the effect in reflecting layer；When guiding device is in non-
During working condition, the bar shaped transparency electrode in reflecting layer is powered so that being formed in each intra-zone can make white electrophoretic
The electric field that particle is moved towards the bar shaped transparency electrode direction electrically opposite with it, white electrophoretic particles are transported in the presence of electric field
Move until gathering the bar shaped transparency electrode surface side electrically opposite with it, and due to identical charges, white electrophoretic
Grain is uniformly distributed along the side of the transparency electrode, now, as viewed from light guide plate exiting surface, the white inside reflecting layer is not can be appreciated that
Electrophoretic particles, because all of electrode in reflecting layer inside is all made of clear material, so, whole reflecting layer is presented transparence
State, also, light guide plate now is also transparent, such that it is able to make whole guiding device that pellucidity is presented.
In preferred embodiment, the white electrophoretic particles are TiO2Particle or SiO2Particle.
The present invention also provides a kind of backlight module, including light source, and any one for also being provided including above-mentioned technical proposal is led
Electro-optical device, the light source is located at the incidence surface side of light guide plate in the guiding device.The backlight module is in off working state
Transmitance pellucidity very high can be showed.
The present invention also provides a kind of display device, including transparent display panel, the back of the body for also being provided including above-mentioned technical proposal
Light module；The light guide plate of the backlight module is located at the incident side of the transparent display panel.The display device is in inoperative shape
Good Transparence Display effect can be realized during state.
In preferred embodiment, the transparent display panel is only provided with analyzing polaroid in light emission side；The backlight module
The light source and the incidence surface of the light guide plate between be provided with and be polarized polaroid.Conventional transparent display panel is polarized polarisation
Piece is placed between light source and light guide plate, now, along perpendicular to the direction of transparent display panel exiting surface, this transparent display panel phase
One is lacked for conventional transparent display panel and has been polarized polaroid, it is thus possible to improve the display device in off working state
Transparence Display effect.
Brief description of the drawings
The guiding device structural representation that Fig. 1 is provided for an embodiment of the present invention；
The guiding device that Fig. 2 is provided for an embodiment of the present invention in working order under structural representation；
The guiding device that Fig. 3 is provided for an embodiment of the present invention structural representation in a non-operative state；
Structural representation of the reflecting layer that Fig. 4 is provided for an embodiment of the present invention under guiding device working condition；
Structural representation of the reflecting layer that Fig. 5 is provided for an embodiment of the present invention under guiding device off working state；
The display device structure schematic diagram that Fig. 6 is provided for an embodiment of the present invention.
Specific 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 carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 1, Fig. 2 and Fig. 3, the guiding device structural representation that Fig. 1 is provided for an embodiment of the present invention；Fig. 2
The guiding device provided for an embodiment of the present invention in working order under structural representation；Fig. 3 is implemented for the present invention is a kind of
The guiding device that example is provided structural representation in a non-operative state.
As shown in figure 1, guiding device provided in an embodiment of the present invention, including：
The light guide plate 1 being made of clear material；Light guide plate 1 is internally provided with multiple sites 2, and each site 2 includes shape
Into the chamber 20 inside light guide plate 1 and the white electrophoretic particles in chamber 20 21；
At least one pair of electrode of electric field is formed during for being powered in each site 2 of light guide plate 1, electric field goes out with light guide plate 1
Smooth surface is parallel.
As shown in figure 1, in above-mentioned guiding device, light guide plate 1 is internally provided with site 2, and site 2 is formed from light guide plate
Chamber 20 inside 1 and the white electrophoretic particles in chamber 20 21 are constituted, and guiding device is provided with least one pair of electricity
Pole, can form the electric field parallel with the exiting surface of light guide plate 1 in each site 2 of light guide plate 1 during energization.As shown in Fig. 2 work as leading
When electro-optical device is in running order, electrode no power, now, white electrophoretic particles 21 with identical charges due to arranging mutually
Denounce, so as in the distribution of the inner homogeneous of chamber 20, now, the light entered from the incidence surface of light guide plate 1 is white electric in the structure of site 2
By exiting surface outgoing under the scattering of swimming particle 21, backlight is provided such that it is able to be embodied as display panel；As shown in figure 3, when leaded light
When device is in off working state, electrode is powered, now, is formed and the exiting surface of light guide plate 1 in each site 2 of light guide plate 1
Parallel electric field, white electrophoretic particles 21 are moved in the presence of electric field until being gathered in chamber 20 perpendicular to the light extraction of light guide plate 1
On the side in face, so that the guiding device shows pellucidity；Because light guide plate 1 is made of clear material, now, from leaded light
The exiting surface of plate 1 is looked, at site 2 as adjacent material printing opacity, the structure of site 2 is not can be appreciated that, therefore, the guiding device can be with
Light transmittance very high is showed, transparent effect is good, so as to be imitated using the Transparence Display that the guiding device can improve display device
Really.
In a kind of preferred embodiment, the electrode being provided with above-mentioned guiding device is two pairs, and each electrode and leaded light
One side of plate 1 is relative, as shown in figure 1, guiding device is provided with the electrode 31 and side c relative with the side a of light guide plate 1
Relative electrode 32 electrode 33 relative with the side b electrode 34 relative with side d, wherein, set the side a of light guide plate 1
It is incidence surface, then electrode 31 is transparency electrode, can reduce influence of the electrode 31 to the incidence surface light transmittance of light guide plate 1.
Preferably, above-mentioned each electrode, when being powered, can be electrode 31 identical with the polarity of electrode 33, meanwhile, electrode
32 is identical with the polarity of electrode 34, and polarity and the electrode 32 of electrode 31 opposite polarity, so that electricity can be formed in each site 2
, the white electrophoretic particles 21 in each site 2 is moved under the conjunction electric field action of each electrode, until it is vertical to be gathered in chamber 20
In on the side of the exiting surface of light guide plate 1.
Specifically, electrode 31 and electrode 33 connect negative polarity, and electrode 32 and electrode 34 connect positive polarity.
In a kind of preferred embodiment, above-mentioned electrode 32, electrode 33 and electrode 34 can select to use opaque material
The electrode of preparation, such as reflectivity aluminium Al materials higher, so as to prevent the light in light guide plate 1 from the side b of light guide plate 1,
Side c and side d projects light guide plate, and then can improve the utilization rate of light.
On the basis of above-described embodiment, it is a kind of preferred embodiment in, the incidence surface for setting light guide plate 1 is side a,
Along light guide plate side a sides point to side c sides direction, chamber 20 parallel to the exiting surface of light guide plate 1 surface area by
Gradual change is big, and/or, the spacing between every adjacent two chambers 20 is tapered into.
As shown in fig. 1, area of the area of the surface f of chamber 202 more than the surface e of chamber 201, the table of chamber 203
Area of the area of face g more than the surface f of chamber 202, the face of the area more than the surface g of chamber 203 of the surface h of chamber 204
Product；And/or,
Spacing between chamber 201 and chamber 202 is apart from d1, the spacing between chamber 202 and chamber 203 is apart from d2,
Spacing between chamber 203 and chamber 204 is apart from d3, wherein, apart from d3More than apart from d2, apart from d2More than apart from d1。
As shown in Fig. 2 because light enters light guide plate 1 from the side a of light guide plate 1, therefore from the side a mono- of light guide plate 1
The direction of the side c sides of light guide plate is pointed in side, and light intensity gradually weakens, and chamber 20 is parallel to the surface of the exiting surface of light guide plate 1
Area is bigger, and/or, the distance between every adjacent two chambers 20 are smaller, and light is subject to white electrophoretic particles 21 in chamber 20
The possibility of scattering is bigger, therefore the light launched from the exiting surface of light guide plate 1 due to scattering is more, so that guide-lighting
The light distribution of the light of the exiting surface outgoing of plate 1 is more uniform.
Reflecting layer that Fig. 4 and Fig. 5, Fig. 4 provided for an embodiment of the present invention be refer under guiding device working condition
Structural representation；Structure of the reflecting layer that Fig. 5 is provided for an embodiment of the present invention under guiding device off working state is shown
It is intended to.
On the basis of the various embodiments described above, it is a kind of preferred embodiment in, as shown in figure 1, guiding device also includes：
Reflecting layer 4, as shown in Figure 4 and Figure 5, reflecting layer 4 includes：
The first transparency carrier 51, the second transparency carrier 52 being oppositely arranged；First transparency carrier 51 and the second transparency carrier
52 is parallel with the exiting surface of light guide plate 1, and the peripheral sealing of the first transparency carrier 51 and the second transparency carrier 52 coordinates to be formed
Annular seal space between the first transparency carrier 51 and the second transparency carrier 52；First transparency carrier 51 is towards the second transparency carrier
52 one side is provided with first transparency electrode 61, and it is transparent that the second transparency carrier 52 is provided with second towards the one side of the first transparency carrier 51
Electrode 62, first transparency electrode 61 and second transparency electrode 62 have platy structure；
Multiple bar shaped transparency electrodes 7 in annular seal space, so that annular seal space to be divided into multiple regions, and each region
Inside has white electrophoretic particles 21, is parallel to each other between bar shaped transparency electrode 7 and annular seal space is separated into multiple regions.
Above-mentioned reflecting layer 4, when guiding device is in running order, the reflecting layer 4 can realize the reflex to light,
When guiding device is in off working state, the reflecting layer 4 can be presented pellucidity.As shown in figure 4, when guiding device is in
During working condition, the first transparency electrode 61 in reflecting layer 4 and second transparency electrode 62 are powered so that in each intra-zone
Formation can make the electric field that white electrophoretic particles 21 are moved towards the direction of first transparency electrode 61, and white electrophoretic particles 21 are in electric field
In the presence of move until being gathered in first transparency electrode 61 away from the surface side of the first transparency carrier 51, and due to phase
Same electric charge, white electrophoretic 21 is uniformly distributed along the surface, now, if light enters into reflecting layer 4 from light guide plate 1, will
Returned to inside light guide plate 1 by the reflection of the white electrophoretic particles 21 of the surface side of first transparency electrode 61 in reflecting layer 4,
So as to realize the effect in reflecting layer 4；As shown in figure 5, when guiding device is in off working state, the bar shaped in reflecting layer 4 is saturating
Prescribed electrode 7 is powered so that being formed in each intra-zone can make white electrophoretic particles 21 towards the bar electrically opposite with it
The electric field of shape transparency electrode direction motion, white electrophoretic particles 21 are moved in the presence of electric field until gathering and its electrical phase
Anti- bar shaped transparency electrode surface side, and due to identical charges, white electrophoretic particles 21 along the transparency electrode 7 side
It is uniformly distributed, now, as viewed from the exiting surface of light guide plate 1, the white electrophoretic particles 21 inside reflecting layer 4 is not can be appreciated that, due to anti-
The all of electrode in the inside of layer 4 is penetrated all to be made of clear material, so, the transparent state in whole reflecting layer 4, also, leading now
Tabula rasa 1 is also transparent, so that whole guiding device can be with transparent state.
On the basis of the various embodiments described above, it is a kind of preferred embodiment in, white electrophoretic particles 21 can be TiO2
Particle or SiO2Particle.
The embodiment of the present invention provides a kind of backlight module, including light source 8, is also provided including any of the above-described kind of embodiment
Guiding device, light source 8 is located at the incidence surface side of light guide plate 1 in guiding device.The backlight module can be with off working state
Show light transmittance pellucidity very high.
As shown in fig. 6, the embodiment of the present invention provides a kind of display device, including transparent display panel 9, also including the above-mentioned back of the body
Light module；The light guide plate 1 of backlight module is located at the incident side of transparent display panel 9.The display device can in off working state
To realize good Transparence Display effect.
On the basis of above-described embodiment, it is a kind of preferred embodiment in, transparent display panel 9 is only provided with light emission side
Analyzing polaroid 102；It is provided between the light source 8 of backlight module and the incidence surface of light guide plate 1 and is polarized polaroid 101.Tradition is aobvious
Show that the polaroid 101 that is polarized of panel is placed between light source 8 and light guide plate 1, now, along perpendicular to the exiting surface of transparent display panel 9
Direction, this transparent display panel 9 lacked one and has been polarized polaroid 101 relative to conventional display panels so that, improve this and show
Transparence Display effect of the showing device in off working state.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this hair to the embodiment of the present invention
Bright spirit and scope.So, if these modifications of the invention and modification belong to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of guiding device, including the light guide plate being made of clear material, the light guide plate is internally provided with multiple sites；Its
It is characterised by,
Each described site includes being formed at the chamber inside the light guide plate and the white electrophoretic in chamber
Grain；
The guiding device also includes at least one pair of electrode for forming electric field when being powered in each described site of light guide plate,
The electric field is parallel with the light guide plate exiting surface.
2. guiding device according to claim 1, it is characterised in that described at least one pair of electrode is two pairs of electrodes, and often
One electrode is relative with a side of the light guide plate, wherein, the electrode relative with the light guide plate incidence surface is
Prescribed electrode.
3. guiding device according to claim 2, it is characterised in that in the two pairs of electrodes, removes and the light guide plate
The relative electrode of incidence surface, the other three electrode is to be prepared using materials of aluminum.
4. guiding device according to claim 1, it is characterised in that
The direction of the opposite side relative with the light guide plate incidence surface is pointed to along the light guide plate incidence surface side, the chamber is put down
Row becomes larger in the surface area of the light guide plate exiting surface.
5. guiding device according to claim 1, it is characterised in that
The direction of the opposite side relative with the light guide plate incidence surface is pointed to along the light guide plate incidence surface side, the chamber
Distribution is more and more intensive.
6. guiding device according to claim 1, it is characterised in that also include：Reflecting layer, the reflecting layer includes：
The first transparency carrier, the second transparency carrier being oppositely arranged；First transparency carrier and second transparency carrier with
The exiting surface of the light guide plate is parallel, and the peripheral sealing of first transparency carrier and the second transparency carrier coordinates to form position
Annular seal space between first transparency carrier and the second transparency carrier；First transparency carrier is transparent towards described second
The one side of substrate is provided with first transparency electrode, and second transparency carrier is provided with second towards the one side of first transparency carrier
Transparency electrode, the first transparency electrode and second transparency electrode have platy structure；
Multiple bar shaped transparency electrodes in the annular seal space, so that the annular seal space to be divided into multiple regions, it is the multiple
It is parallel to each other between bar shaped transparency electrode, each described intra-zone has white electrophoretic particles.
7. the guiding device according to any one of claim 1~6, it is characterised in that the white electrophoretic particles are TiO2Grain
Son or SiO2Particle.
8. a kind of backlight module, including light source, it is characterised in that also including the leaded light dress as described in any one of claim 1~7
Put, the light source is located at the incidence surface side of light guide plate in the guiding device.
9. a kind of display device, including display panel, it is characterised in that also including backlight module as claimed in claim 8；Institute
The light guide plate for stating backlight module is located at the incident side of the display panel.
10. display device according to claim 9, it is characterised in that the display panel is only provided with analyzing in light emission side
Polaroid；It is provided between the light source of the backlight module and the incidence surface of the light guide plate and is polarized polaroid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410338876.7A CN104155715B (en) | 2014-07-16 | 2014-07-16 | A kind of guiding device, backlight module and display device |
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| 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 CN104155715A (en) | 2014-11-19 |
| CN104155715B true CN104155715B (en) | 2017-06-30 |
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| US9470834B2 (en) * | 2014-12-01 | 2016-10-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Light guide plate and manufacturing method thereof |
| CN104503016B (en) * | 2014-12-01 | 2018-01-02 | 深圳市华星光电技术有限公司 | Light guide plate and preparation method thereof |
| CN111290068B (en) * | 2020-02-26 | 2022-03-08 | 武汉华星光电技术有限公司 | Light guide plate, backlight module and manufacturing method of light guide plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517466A (en) * | 2006-09-12 | 2009-08-26 | 皇家飞利浦电子股份有限公司 | Controllable light guide |
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| CN2594812Y (en) * | 2002-12-21 | 2003-12-24 | 鸿富锦精密工业（深圳）有限公司 | Light conducting panel and surface light source devices |
| CN2594827Y (en) * | 2002-12-26 | 2003-12-24 | 鸿富锦精密工业（深圳）有限公司 | Background light source |
| CN100465749C (en) * | 2005-07-18 | 2009-03-04 | 财团法人工业技术研究院 | Electrophoretic display with semi reflection transmission film and its producing method |
| KR101311304B1 (en) * | 2009-12-15 | 2013-09-25 | 엘지디스플레이 주식회사 | Transparent display device |
| TWI436140B (en) * | 2011-06-28 | 2014-05-01 | E Ink Holdings Inc | Color electrophoretic display |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517466A (en) * | 2006-09-12 | 2009-08-26 | 皇家飞利浦电子股份有限公司 | Controllable light guide |
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