CN102913855A - Backlight module and light mixing structure thereof - Google Patents
Backlight module and light mixing structure thereof Download PDFInfo
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- CN102913855A CN102913855A CN2012104382148A CN201210438214A CN102913855A CN 102913855 A CN102913855 A CN 102913855A CN 2012104382148 A CN2012104382148 A CN 2012104382148A CN 201210438214 A CN201210438214 A CN 201210438214A CN 102913855 A CN102913855 A CN 102913855A
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Abstract
The invention provides a backlight module and a light mixing structure thereof. The light mixing structure is applied to a lateral light source type backlight module, and at least comprises a light guide strip, a plurality of light entrance surfaces, at least one light emergence surface, a plurality of inclined surfaces, and at least one reflection/penetration micro-structure, wherein the light guide strip comprises a first surface and a second surface; the second surface and the first surface are one pair of opposite planes, and a plurality of scattering particles are scattered in the light guide strip; the light entrance surfaces are arranged on the first surface at intervals, and are respectively and adjacently connected with a plurality of light sources; the light emergence surface comprises a plurality of V-shaped grooves, is arranged on the second surface and is adjacently connected with a light guide board; the inclined surfaces are arranged in the light guide strip, are adjacently connected with the light emergency surface, and are respectively aligned to the plurality of light entrance surfaces; each inclined surface is not parallel to the plurality of light entrance surfaces; the inner walls of the plurality of inclined surfaces are used for reflecting light incident from the light entrance surfaces to the light sources; and the reflection/penetration micro-structure is arranged between each two adjacent light entrance surfaces of the first surface, and is parallel to the light emergence surface, so that the light reflected from the inclined surfaces can be reflected to the light emergency surface.
Description
Present patent application is that the application number submitted in 26th in 08 month in 2008 is 200810212434.2, denomination of invention is divided an application for the Chinese patent application of " backlight module and light-mixing structure thereof ".
Technical field
The invention relates to a kind of display, and particularly relevant for a kind of backlight module and light-mixing structure thereof.
Background technology
Backlight module is one of key part and component of display panels.Because liquid crystal itself can't be luminous, therefore need to supply light source with backlight module, use making liquid crystal panel that normal and the well-balanced image of brightness can be provided.A plurality of optical sheets are arranged in backlight module, for example LGP, diffusion sheet and prismatic lens, the light that is used for light source is sent is distributed on the liquid crystal panel equably, and then improves the brightness of liquid crystal panel.
The light source that is applied to backlight module has cold-cathode fluorescence lamp or light emitting diode.Wherein, because light emitting diode has possessed the characteristics such as high-durability, the life-span is long, light and handy, power consumption is low, be a highly desirable new generation lighting source.Especially in present energy expenditure gradually under the surging situation, light emitting diode more is subject to attention and the utilization of industrial circle, uses to replace in the past other larger light-emitting components of power consumption.In addition, light emitting diode is of a great variety, of many uses, becomes already important tool indispensable in the modern life.
Generally speaking, be subject to technology, colour temperature and the brightness of the light that each light emitting diode in the same wholesale optical diode sends are not quite similar.When in the backlight module that is applied to display, the colour temperature of each light emitting diode or the difference of brightness will cause on the display picture problems such as bright dark space piece or irregular colour be even.
For fear of above-mentioned problem, the display dealer can segment classification according to its colour temperature and brightness again with same wholesale optical diode usually, only gets the close light emitting diode of colour temperature and brightness and makes backlight module, and remaining light emitting diode is then eliminated.So not only increase processing step, also waste material, increase production cost.
In view of this, need a kind of new backlight module and optical texture thereof, can overcome the phenomenon of light emitting diode colour temperature and luminance difference, take into account simultaneously industry demand and economic benefit.
Summary of the invention
One aspect of the present invention provides a kind of light-mixing structure, described light-mixing structure is applied to lateral light source formula backlight module, at least comprise: a light-strip, has a first surface and one second, described second is a pair of relative plane with described first surface, comprises a plurality of scattering particles and intersperses among among the described light-strip; A plurality of incidence surfaces are arranged at intervals at described first surface, and respectively in abutting connection with a plurality of light sources; At least one exiting surface comprises a plurality of v-depressions, is arranged at described second, and in abutting connection with a LGP; A plurality of inclined-planes, be arranged in the described light-strip, in abutting connection with described exiting surface, and the described first surface of described a plurality of slope abuts, and the described a plurality of incidence surface that aligns respectively, wherein each described inclined-plane all is not parallel to described a plurality of incidence surface, and the inwall on described a plurality of inclined-planes is in order to the light of reflection from described a plurality of light sources of described a plurality of incidence surface incidents; And at least one reflection/penetrate micro-structural, be arranged between the two described incidence surfaces that are close to of described first surface, and the described exiting surface that aligns, reflexing to described exiting surface from the light of described a plurality of inclined-planes reflection.
Hence one can see that, even if the colour temperature of the light that each light source sends or brightness are slightly variant, also can mutually mix through the light of light-mixing structure with each light source, so that the light that is finally spread out of by exiting surface is colour temperature and the uniform light of luminance mix.
On the other hand, the invention provides a kind of backlight module, can adopt not identical light source completely of several brightness and colour temperature, the light-mixing structure that sees through in the backlight module evenly mixes the light that light source sends, to produce the output light of even colour temperature and brightness.Backlight module has light source, light-mixing structure and LGP, and light-mixing structure is between light source and LGP.
Wherein, light-mixing structure is applied to lateral light source formula backlight module, comprises: a light-strip; A plurality of incidence surfaces, each interval are arranged in a first surface of described light-strip, and wherein each described light source is in abutting connection with described one of them person of a plurality of incidence surfaces, with incident light to described light-mixing structure; A plurality of inclined-planes are arranged on the described light-strip, described one of them person of a plurality of incidence surfaces of each described slope abuts, and the described a plurality of incidence surfaces of the indivedual alignment of the inwall on wherein said a plurality of inclined-planes are with the light of reflection from described a plurality of incidence surface incidents; At least one reflection/penetrate micro-structural is arranged between two next-door neighbours' the described incidence surface, in order to the light of reflection from described a plurality of inclined-planes reflection; At least one exiting surface, comprise a plurality of v-depressions, be arranged on one second of described light-strip, in abutting connection with described a plurality of inclined-planes, and the described reflection of aliging/penetrate micro-structural, in order to send out the light from the reflection of described reflection/penetrate micro-structural, wherein said first surface is a pair of relative plane with described second; A plurality of scattering particles intersperse among between described a plurality of incidence surface, described a plurality of inclined-planes and the described exit facet, in order to change the direct of travel of light.
By settings such as incidence surface, inclined-plane, exiting surface and reflection in the light-mixing structure/penetrate micro-structurals, the light that each light source is sent is able to evenly mix in light-mixing structure, and then to be sent to the light of LGP be brightness and the uniform light of colour temperature.
From the above, although the colour temperature of the light that each light source produces or brightness are not identical, yet see through light-mixing structure light is mixed mutually, thereby produce colour temperature and the uniform light of luminance mix.Thus, the dealer is persistent light source in selecting identical or close colour temperature and brightness again, not only simplifies and makes flow process, more can reduce the material expenditure, reduces production costs.
Description of drawings
For above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described in detail as follows:
Fig. 1 is the stereogram that illustrates according to the backlight module of the embodiment of the invention.
Fig. 2 is the aerial view that illustrates the backlight module that illustrates according to Fig. 1.
Fig. 3 is the aerial view that illustrates the light-mixing structure that illustrates according to Fig. 2.
Fig. 4 is the aerial view that illustrates according to the light-mixing structure of another embodiment of the present invention.
Fig. 5 is the aerial view that illustrates according to the backlight module of another embodiment of the present invention.
Fig. 6 is the aerial view that illustrates the light-mixing structure that illustrates according to Fig. 5.
Drawing reference numeral:
100: backlight module 110: light source
120: LGP 130: reflector
140: light-mixing structure 142: first surface
144: the second 146: light-strip
210: incidence surface 220: exiting surface
222: groove 230: groove
240: inclined-plane 250: reflect/penetrate micro-structural
252: groove 310: scattering particles
The specific embodiment
Please refer to Fig. 1 and Fig. 2, it illustrates respectively stereogram and the aerial view of the backlight module 100 of one embodiment of the invention.No matter it is that brightness or colour temperature are all uniform light that backlight module 100 is responsible for offering display.
Please also refer to Fig. 2 and Fig. 3, Fig. 3 illustrates the aerial view of light-mixing structure 140.Light-mixing structure 140 mainly comprises a light-strip 146, is used for the light that light source 110 sends is transmitted to LGP 120.Light-strip 146 can be comprised of transparent optics materials such as acryl or polymethyl methacrylates.Be provided with several incidence surfaces 210, inclined-plane 240 on the light-strip 146, reflect/penetrate micro-structural 250 and exiting surface 220.
Inclined-plane 240 is arranged in the light-strip 146, in abutting connection with exiting surface 220 and alignment incidence surface 210 parts.Each inclined-plane 240 is all not parallel with each incidence surface 210, so that be difficult for 240 ejaculations from the inclined-plane from the light of incidence surface 210 incidents, and the inwall on inclined-plane 240 is in order to the light of reflection from incidence surface 210 incidents, to increase reflection of light number of times and conduct path, so that the light that each light source 110 imports into is able to fully mix in light-mixing structure 140.
In general, when light passed the interface of two kinds of refractive index different mediums, the direct of travel of light can change to some extent, such as refraction or reflection.Wherein, when light incides optically thinner medium by optically denser medium, if the angle of the incident of light greater than critical angle, total reflection will occur.In the principle that has in the art common knowledge technology personnel Ying Zhi critical angle, and the size of critical angle can be different in response to the difference of the medium at interface two ends.In an embodiment of the present invention, the material of light-strip 146 is acryl, and the critical angle between itself and the air is about 42 degree.
Embodiments of the invention are characteristics of utilizing above-mentioned critical angle.Particularly, inclined-plane 240 has an angle with incidence surface 210, so that light is when shining inclined-plane 240 by incidence surface 210, the incidence angle that most light produces on inclined-plane 240 is greater than critical angle, so can produce total reflection.
Angle between inclined-plane 240 and the incidence surface 210 is capable of regulating also, so that the angle on most incident light and inclined-plane 240 is greater than the critical angle of the inner total reflection of optics material.The angle of the angle between inclined-plane 240 and the incidence surface 210 between 60 degree, is preferably the critical angle greater than light-strip 146 between 30 degree.In the present embodiment, the angle of angle is preferably 45 degree greater than 42 degree.
On the other hand, can be on the inclined-plane 240 structures of strengthening total reflection so that incident light also can be reflected by inclined-plane 240 less than the incident light of critical angle.Particularly, the material of the inwall on inclined-plane 240 can be the plated film with high reflectance, similarly is filming on mirror surface, to increase the reflectivity on inclined-plane 240.
In the present embodiment, an end on inclined-plane 240 is in abutting connection with exiting surface 220, the other end and another inclined-plane 240 adjacency, and namely inclined-plane 240 consists of several grooves with V-arrangement cross section 230 in pairs, and groove 230 separate settings also are staggered with exiting surface 220.Each groove 230 is separately to a homogeneous incidence surface 210, and the inwall of groove 230 also just can reflect light by incidence surface 210 incidents for the inwall on inclined-plane 240.
Particularly, less than the distance between first surface 142 and second 144, namely groove 230 is a depression on the light-strip 146 to the minimum range of first surface 142 in the central authorities of groove 230, but not projection.Angle between the inclined-plane 240 in the groove 230 can change according to the optical characteristics of light-strip 146.In the present embodiment, the angle between two inclined-planes 240 is 90 degree.In addition, groove 230 also can comprise a plurality of inclined-planes 240, and the shape of groove 230 also can be semicircle.
Reflect/penetrate between the incidence surfaces 210 that micro-structural 250 is arranged at two next-door neighbours, namely reflect/penetrate micro-structural 250 and incidence surface 210 and intermesh on the first surface 142 that is arranged in light-strip 146, and alignment exiting surface 220.Reflecting/penetrate micro-structural 250 can penetrate the light portion reflecting part of 240 reflections from the inclined-plane.Wherein, but reflect/penetrate the light of micro-structural 250 reflecting parts 240 reflections from the inclined-plane, and reflect light to exiting surface 220.In addition, the light of part 240 reflections from the inclined-plane can penetrate through reflective/and penetrate micro-structural 250 and spread out of light-strip 146.The light that spreads out of light-strip 146 can be reflected back in the light-strip 146 by being arranged at light-strip 146 reflector 130 all around.Reflect/penetrate micro-structural 250 and can be printing net-point, v-depression (V-cut) or reflector.In an embodiment of the present invention, reflect/penetrate micro-structural 250 and be the groove 252 of several V-arrangements.
Exiting surface 220 is separated on second 144 that is arranged at light-strip 146, and in abutting connection with LGP 120, in order to mixed light is conducted to LGP 120.In an embodiment of the present invention, be provided with the groove 222 of several V-arrangements on the exiting surface 220, so that light spreads out of from exiting surface 220 easily.
Exiting surface 220 and incidence surface 210 are arranged at respectively on the Different Plane of light-strip 146, and interlaced with each other and do not line up, so that the light that is imported into by incidence surface 220 is difficult for directly being spread out of by exiting surface 220.The area of incidence surface 210 and exiting surface 220 can be according to the size setting of light source 110 and LGP 120, and when the thickness of light source 110 during less than LGP 120 thickness, the height of incidence surface 210 and area thereof then can be less than height and the areas thereof of exiting surface 220.Vice versa, and when the thickness of light source 110 during greater than the thickness of LGP 120, the height of incidence surface and area then can be less than height and the areas of exiting surface.In an embodiment of the present invention, the section of light-strip 146 slightly in echelon, namely the first surface 142 of light-strip 146 is 144 parallel with second, and the height of first surface 142 is greater than second 144 height, so that the height of incidence surface 210 is greater than the height of exiting surface 220.In an embodiment of the present invention, the area of incidence surface 210 is greater than the area of exiting surface 220.On the other hand, utilize reflector 130 to coat the outer surface of light-strip 146, can effectively reduce the light leakage phenomena in the light transmition process.
Please refer to Fig. 4, it illustrates the aerial view of a kind of light-mixing structure 140 of another embodiment of the present invention.Be scattered with many scattering particles 310 among the light-strip 146 of light-mixing structure 140.Because scattering particles 310 intersperses among between incidence surface 210, inclined-plane 240 and the exiting surface 220, therefore in light-strip 146, advance and when shining scattering particles 310 when light, light can be subject to scattering particles 310 effects and refraction or reflection, so that the going direction changing of light.Thus, under the concentration of suitable scattering particles, the number of times of light deviation in light-mixing structure 140 can increase, so that the conduct path of light increases, the mixability of the light that sends with other light sources 110 just can improve.
Scattering particles 310 can be made by reflecting material, such as titanium dioxide, barium sulfate, calcium carbonate, magnesia, zinc oxide or silicon compound such as silica.Scattering particles 310 also can be made by the different optical material of refractive index and light-strip 146, similarly is polystyrene or Merlon etc.
By embodiments of the invention as can be known, the brightness of each light source 110 that adopts in the backlight module 100 need not be identical or approximate with colour temperature, as long as see through light-mixing structure 140 light that each light source 110 sends is mixed, just can be to be sent to the light of LGP 120 be brightness and the uniform light of colour temperature.
Please refer to Fig. 5 and Fig. 6, Fig. 5 illustrates the aerial view according to the backlight module 100 of another embodiment of the present invention, and Fig. 6 illustrates the aerial view of light-mixing structure 140.In the present embodiment, the light-strip 146 of light-mixing structure 140 has roughly section in echelon, namely first surface 142 with second 144 relative to each other and parallel, the two ends on two inclined-planes 240 are in abutting connection with first surface 142 and second 144.
Two incidence surfaces 210 are arranged on the first surface 142 of light-strip 146, indivedual in abutting connection with a light source 110.Wherein, the colour temperature of two light sources 110 can be different with brightness.In an embodiment of the present invention, the colour temperature of two light sources 110 can be complementary colours.After the light of two complementary colours mixes, can produce the mixed light that is similar to white light.
Be provided with between two next-door neighbours' the incidence surface 210 and reflect/penetrate micro-structural 250.In an embodiment of the present invention, reflect/penetrate micro-structural 250 and be the groove 252 of several V-arrangements.Exiting surface 220 is arranged on second 144, and micro-structural 250 is reflected/penetrates in alignment, and in abutting connection with the LGP 120 of backlight module 100.
One end on inclined-plane 240 is in abutting connection with exiting surface 220, and the other end is in abutting connection with incidence surface 210.240 other vertical alignment two incidence surfaces 210 in two inclined-planes of light-mixing structure 140, and inclined-plane 240 all is not parallel to incidence surface 210.As previously mentioned, the inwall on inclined-plane 240 can reflect the light from incidence surface 210 incidents, even is total reflection.
Still comprise several scattering particles 310 in the light-mixing structure 140 and intersperse among in the light-strip 146, in order to change the direct of travel of light in the light-strip 146.
In other words, even if colour temperature or the brightness of the light that each light source 110 sends are slightly variant, after the light that light source 110 is sent imports into from the incidence surface 210 of light-mixing structure 140, by inclined-plane 240, scattering particles 310 with reflect/penetrate the effect of micro-structural 250, so that light after the fully mixing, just can be sent out colour temperature and the uniform light of luminance mix by exiting surface 220 in light-mixing structure 140.Thus, just can solve the inhomogeneous problem that causes because of each light source 110 bright dipping difference.
Although the present invention discloses as above with a plurality of embodiment; so it is not to limit the present invention; anyly have the knack of those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention defines and is as the criterion when looking appending claims.
Claims (27)
1. a light-mixing structure is characterized in that, described light-mixing structure is applied to lateral light source formula backlight module, comprises at least:
One light-strip has a first surface and one second, and described second is a pair of relative plane with described first surface, comprises a plurality of scattering particles and intersperses among among the described light-strip;
A plurality of incidence surfaces are arranged at intervals at described first surface, and respectively in abutting connection with a plurality of light sources;
At least one exiting surface comprises a plurality of v-depressions, is arranged at described second, and in abutting connection with a LGP;
A plurality of inclined-planes, be arranged in the described light-strip, in abutting connection with described exiting surface, and described a plurality of incidence surface aligns respectively, wherein each described inclined-plane all is not parallel to described a plurality of incidence surface, and the inwall on described a plurality of inclined-planes is in order to the light of reflection from described a plurality of light sources of described a plurality of incidence surface incidents, and wherein said a plurality of inclined-planes are in pairs to form the groove in a plurality of V-arrangements cross section; And
At least one reflection/penetrate micro-structural is arranged between the two described incidence surfaces that are close to of described first surface, and the described exiting surface that aligns, reflexing to described exiting surface from the light of described a plurality of inclined-planes reflection.
2. light-mixing structure as claimed in claim 1 is characterized in that, the material of the inwall on described a plurality of inclined-planes is high anacamptics material.
3. light-mixing structure as claimed in claim 1 is characterized in that, the material of described a plurality of scattering particles is titanium dioxide or silicon compound.
4. light-mixing structure as claimed in claim 1 is characterized in that, described micro-structural comprises a plurality of v-depressions.
5. light-mixing structure as claimed in claim 1 is characterized in that, described micro-structural is a reflector.
6. light-mixing structure as claimed in claim 1 is characterized in that, each described inclined-plane and described one of them person of a plurality of incidence surface have an angle, and described angle is 45 degree.
7. a backlight module is characterized in that, described backlight module comprises at least:
A plurality of light sources;
One light-mixing structure is applied to lateral light source formula backlight module, comprises:
One light-strip;
A plurality of incidence surfaces, each interval are arranged in a first surface of described light-strip, and wherein each described light source is in abutting connection with described one of them person of a plurality of incidence surfaces, with incident light to described light-mixing structure;
A plurality of inclined-planes are arranged on the described light-strip, and the described a plurality of incidence surfaces of the indivedual alignment of the inwall on wherein said a plurality of inclined-planes are with the light of reflection from described a plurality of incidence surface incidents;
At least one micro-structural is arranged between two next-door neighbours' the described incidence surface, in order to the light of reflection from described a plurality of inclined-planes reflection;
At least one exiting surface comprises a plurality of v-depressions, is arranged on one second of described light-strip, in abutting connection with described a plurality of inclined-planes, and the described micro-structural of aliging, in order to send out the light from described micro-structural reflection, wherein said first surface is a pair of relative plane with described second;
A plurality of scattering particles intersperse among between described a plurality of incidence surface, described a plurality of inclined-planes and the described exit facet, in order to change the direct of travel of light; And
One LGP is in abutting connection with described exiting surface.
8. backlight module as claimed in claim 7 is characterized in that, described one of them person of a plurality of incidence surfaces of each described slope abuts.
9. backlight module as claimed in claim 7 is characterized in that, the inwall on described a plurality of inclined-planes is with the light total reflection from described a plurality of incidence surface incidents.
10. backlight module as claimed in claim 9 is characterized in that, the material on described a plurality of inclined-planes is the ATR Optical material.
11. backlight module as claimed in claim 7 is characterized in that, described micro-structural comprises a plurality of v-depressions.
12. backlight module as claimed in claim 7 is characterized in that, the material of described a plurality of scattering particles is titanium dioxide, barium sulfate, calcium carbonate, magnesia, zinc oxide, polystyrene, Merlon or silicon compound.
13. backlight module as claimed in claim 7 is characterized in that, also comprises the upper surface of the described LGP in a reflector fitting part, and extends to the lower surface of described light-mixing structure and described LGP.
14. backlight module as claimed in claim 7 is characterized in that, the material of described light-strip is acryl or polymethyl methacrylate.
15. backlight module as claimed in claim 7 is characterized in that, a height of described first surface is greater than described second height.
16. backlight module as claimed in claim 15 is characterized in that, the area of described incidence surface is greater than the area of described exiting surface.
17. a light-mixing structure is characterized in that, described light-mixing structure is applied to lateral light source formula backlight module, comprises:
One light-strip, has the section that roughly is trapezoidal, have a first surface, one second and a pair of inclined-plane, described second is a pair of relative plane with described first surface, and each described inclined-plane is all in abutting connection with described first surface and described second, also comprise a plurality of scattering particles and intersperse among among the described light-strip, to change the direct of travel of light;
A plurality of incidence surfaces, separation is arranged on the described first surface and the described a plurality of inclined-plane that aligns respectively, and respectively in abutting connection with a plurality of light sources, the described a plurality of incidence surfaces of the indivedual alignment of the inwall on wherein said a pair of inclined-plane;
At least one micro-structural is arranged at described first surface, and with described a plurality of incidence surface alternative arrangements, in order to the light of reflection from the reflection of described a plurality of inclined-planes; And
At least one exiting surface comprises a plurality of v-depressions, is arranged at described second, and the described micro-structural of aliging, in order to reaching a LGP from the light of described micro-structural reflection.
18. light-mixing structure as claimed in claim 17 is characterized in that, described a plurality of inclined-planes are not parallel to described a plurality of incidence surface, and the inwall on described a plurality of inclined-planes will be from the light total reflection of described a plurality of light sources of described a plurality of incidence surface incidents.
19. light-mixing structure as claimed in claim 18 is characterized in that, the material on described a plurality of inclined-planes is the optics material of total reflection.
20. a light-mixing structure is characterized in that, described light-mixing structure is applied to lateral light source formula backlight module, comprises:
One light-strip has relative to each other and a first surface of almost parallel and one second;
A plurality of incidence surfaces separately are arranged at described first surface, and respectively in abutting connection with a plurality of light sources, to accept the light of described a plurality of light source incidents;
A plurality of grooves separately are arranged at described second, and the described a plurality of incidence surface that aligns respectively, and the inwall reflection of wherein said a plurality of grooves is from the light of described a plurality of light sources of described incidence surface incident;
A plurality of micro-structurals are separated and to be arranged at described first surface, and with described a plurality of incidence surface alternative arrangements, in order to the light of reflection from described a plurality of grooves reflections; And a plurality of exiting surfaces, comprise a plurality of v-depressions, separate and to be arranged at described second, and with described a plurality of groove alternative arrangements, and the described micro-structural of aliging is in order to spread out of light to one LGP from described micro-structural reflection;
A plurality of scattering particles intersperse among between described a plurality of incidence surface, described a plurality of inclined-planes and the described exit facet.
21. light-mixing structure as claimed in claim 20 is characterized in that, the central authorities of each described groove arrive the minimum range of described first surface less than described second minimum range to described first surface.
22. light-mixing structure as claimed in claim 21 is characterized in that, described a plurality of grooves be shaped as V-arrangement or semicircle.
23. light-mixing structure as claimed in claim 20 is characterized in that, each described groove has a pair of inclined-plane respectively in abutting connection with the two described exiting surfaces that are close to.
24. light-mixing structure as claimed in claim 23 is characterized in that, described a plurality of inclined-planes have an angle of cut, and the described angle of cut is 90 degree.
25. light-mixing structure as claimed in claim 20 is characterized in that, the inwall of described a plurality of grooves has the optics material of total reflection.
26. light-mixing structure as claimed in claim 20 is characterized in that, a height of described first surface is greater than described second height.
27. light-mixing structure as claimed in claim 20 is characterized in that, the area of described incidence surface is greater than the area of described exiting surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104382148A CN102913855A (en) | 2008-08-26 | 2008-08-26 | Backlight module and light mixing structure thereof |
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|---|---|---|---|
| CN2012104382148A CN102913855A (en) | 2008-08-26 | 2008-08-26 | Backlight module and light mixing structure thereof |
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| CNA2008102124342A Division CN101358712A (en) | 2008-08-26 | 2008-08-26 | Backlight module and light-mixing structure thereof |
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| CN102913855A true CN102913855A (en) | 2013-02-06 |
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| CN104570191A (en) * | 2013-10-24 | 2015-04-29 | 华为终端有限公司 | Light guide plate and backlight module |
| WO2015078361A1 (en) * | 2013-11-26 | 2015-06-04 | Byd Company Limited | Cross-reference to related application |
| CN105388555A (en) * | 2014-08-20 | 2016-03-09 | 三菱电机株式会社 | Surface light source device and liquid crystal display device |
| WO2017067340A1 (en) * | 2015-10-21 | 2017-04-27 | 瑞仪光电(苏州)有限公司 | Light guide plate, backlight module, and display apparatus |
| US10281635B2 (en) | 2012-03-16 | 2019-05-07 | Radiant Opto-Electronics (Suzhou) Co.,Ltd. | Light guide plate, backlight module and display device |
| CN111722433A (en) * | 2019-03-22 | 2020-09-29 | 中强光电股份有限公司 | Light source module and display device |
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| US10281635B2 (en) | 2012-03-16 | 2019-05-07 | Radiant Opto-Electronics (Suzhou) Co.,Ltd. | Light guide plate, backlight module and display device |
| CN103632615A (en) * | 2012-08-23 | 2014-03-12 | 群康科技(深圳)有限公司 | Displayer |
| CN104570191A (en) * | 2013-10-24 | 2015-04-29 | 华为终端有限公司 | Light guide plate and backlight module |
| WO2015078361A1 (en) * | 2013-11-26 | 2015-06-04 | Byd Company Limited | Cross-reference to related application |
| CN105388555A (en) * | 2014-08-20 | 2016-03-09 | 三菱电机株式会社 | Surface light source device and liquid crystal display device |
| CN105388555B (en) * | 2014-08-20 | 2019-05-28 | 三菱电机株式会社 | Planar light source device and liquid crystal display device |
| WO2017067340A1 (en) * | 2015-10-21 | 2017-04-27 | 瑞仪光电(苏州)有限公司 | Light guide plate, backlight module, and display apparatus |
| CN111722433A (en) * | 2019-03-22 | 2020-09-29 | 中强光电股份有限公司 | Light source module and display device |
| CN111812884A (en) * | 2019-04-10 | 2020-10-23 | 中强光电股份有限公司 | Light source module and display device |
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Application publication date: 20130206 |