CN101542189B - Light guide bars and plane lighting device with dual-surface lighting - Google Patents
Light guide bars and plane lighting device with dual-surface lighting Download PDFInfo
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- CN101542189B CN101542189B CN2008800001721A CN200880000172A CN101542189B CN 101542189 B CN101542189 B CN 101542189B CN 2008800001721 A CN2008800001721 A CN 2008800001721A CN 200880000172 A CN200880000172 A CN 200880000172A CN 101542189 B CN101542189 B CN 101542189B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces of the light guide
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- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides ight guide bars and a plane lighting device with dual-surface lighting. According to the embodiment of the invention, the plane lighting device with dual-surface lighting has a plurality of light guide bars, wherein, a plurality of light guide bars are arranged in the one plane, each guide bar comprises a first set of light transmitting surface configured towards a first direction and a second set of light transmitting surface configured towards a second direction, each light guide bar also comprises a first end and a second end which are arranged for receiving the light, wherein, a plurality of light guide bars send lights from the first set of light transmitting surface and the second set of light transmitting surface. The light output amounts of two surfaces of the backlight module can be controlled by the arrangement of the network points. A reflector enables the two surfaces of the backlight module to be controlled respectively and independently.
Description
Technical field
The present invention relates to a kind of leaded light bar (light guiding strip), particularly a kind of planar emission apparatus that uses the double-side of one or more leaded light bars.
Background of invention
Backlight module is the basic module of LCD.The backlight module that uses at present has multiple kenel.For example; The luminous backlight module of tradition side is at the both sides of backlight module configuration LED; And a LGP is provided on the viewing area of LCD display, the light that LED produced at backlight module two ends can give off backlight module equably through LGP.Another kind of direct type backlight module is directly a plurality of LED to be provided in the viewing area of LCD display, so need not use LGP.But the radiation semienergy angle of each LED approximately is+/-60 °.So direct type backlight module must keep a segment distance above LED, there is part to overlap with the light that lets every adjacent LED send.More than two kinds of backlight modules its pluses and minuses are respectively arranged.So the backlight module that side is luminous is because use LGP generally heavy than direct type backlight module.But the luminous interior configuration of the backlight module LED of side does not have in direct type backlight module tight.Direct type backlight module then needs long light mixing distance, thus thicker relatively, and it needs extra circuit board.So the overall structure cost of direct type backlight module is higher relatively.
U.S. Patent Publication 2005/0007758A1,2005/0140848A1 and U.S. Patent number 6,966,644 all provide the backlight module that can increase the LED spacing.At first, the LGP that U.S. Patent Publication 2005/0007758A1 provides a kind of strip to have a plurality of perforates, leaded light bar two ends respectively dispose a LED.When LED was luminous, a plurality of perforates of LGP just can give off light with a plurality of LED of emulation.In addition, U.S. Patent Publication 2005/0140848A1 provides a kind of backlight module with a plurality of strip LGPs, and its advantage is can be by indivedual drive selected LGPs with the adjustment brightness of backlight module.Moreover, U.S. Patent number 6,966,664 provide a kind of leaded light bar, and the light that the LED at leaded light bar two ends sends can be concentrated from a cambered surface of leaded light bar and radiate, thereby forms a wire and uniform light source.
In sum, leaded light bar of the prior art and backlight module have many such or such deficiencies.So, a kind of backlight module that can solve backlight module and these shortcomings of method backlight need be provided.
Summary of the invention
According to one embodiment of the invention, disclosed a kind of planar emission apparatus of double-side.The planar emission apparatus of double-side comprises a plurality of leaded light bars; Wherein a plurality of leaded light bars are placed in the plane; Each leaded light bar comprises first group of light emitting surface settling towards first direction and second group of light emitting surface settling towards second direction; Each leaded light bar also comprises first end and second end, and it is used for receiving light, and wherein a plurality of leaded light bars send light from first and second groups of light emitting surfaces; Said a plurality of leaded light bar is divided into first group of leaded light bar and second group of leaded light bar according to following condition: in said first group of leaded light bar, at least one light emission surface in first group of light emission surface of each leaded light bar has light diffusion site; In said second group of leaded light bar, at least one light emission surface in second group of light emission surface of each leaded light bar has light diffusion site.
According to an alternative embodiment of the invention, disclosed a kind of planar emission apparatus of double-side.The planar emission apparatus of double-side comprises first group of leaded light bar and the second group of leaded light bar that is placed in the plane; Each leaded light bar in first group of leaded light bar comprises first group of light emission surface placing towards first direction and second group of light emission surface placing towards second direction; Wherein at least one first group of light emission surface of first group of leaded light bar comprises light diffusion site; And wherein each first group of leaded light bar has an end to be configured to receive light; And each second group of leaded light bar comprises towards first group of light emission surface of first direction placement and second group of light emission surface placing towards second direction; Wherein second group of leaded light bar placed with first group of leaded light bar successively at interval; The contiguous first group of leaded light bar of each second group of leaded light bar, and wherein at least one second group of light emission surface of the second leaded light bar has light diffusion site, and wherein each first group of leaded light bar has an end in order to receive light.Said second group of leaded light bar placed at interval with first group of leaded light bar successively and comprised following situation: second group of leaded light bar placed with first group of leaded light bar successively one by one at interval; Per two leaded light bars are a unit in second group of leaded light bar, place with the unit interval that the one or more leaded light bars in first group of leaded light bar are formed.
According to an alternative embodiment of the invention, disclosed a kind of planar emission apparatus of double-side.The planar emission apparatus of double-side comprises: first group of leaded light bar and second group of leaded light bar; Each first group of leaded light bar comprises towards first group of light emission surface of first direction placement and second group of light emission surface placing towards second direction; Wherein at least one first group of light-emitting area of first group of leaded light bar has light diffusion site, and wherein each first group of leaded light bar has at least one end to be configured to receive light; And each second group of leaded light bar comprises towards first group of light emission surface of first direction placement and second group of light emission surface placing towards second direction; Wherein second group of leaded light bar placed with first group of leaded light bar successively at interval; The contiguous first group of leaded light bar of each second group of leaded light bar; And wherein at least one the first group of light emission surface in second group of leaded light bar has light diffusion site; And wherein each first group of leaded light bar has at least one end to be configured to receive light, and said second group of leaded light bar placed at interval with first group of leaded light bar successively and comprised following situation: second group of leaded light bar placed with first group of leaded light bar successively one by one at interval; Per two leaded light bars are a unit in second group of leaded light bar, place with the unit interval that the one or more leaded light bars in first group of leaded light bar are formed, and one or more LED are placed at least one end near first and second groups of leaded light bars; And a speculum or a plurality of anti-ballistic striation; Said speculum is set to make the first group light emitting surface of speculum near first group of leaded light bar; And near second group of light emitting surface of second group of leaded light bar; Said anti-ballistic striation has a profile complementary with the leaded light strip, and be set up and make its first group of light emitting surface near first group of leaded light bar, or near second group of light emitting surface of second group of leaded light bar.
From following detailed description, those skilled in the art will be more prone to understand other embodiments of the invention, and wherein embodiments of the invention are to describe through accompanying drawing.Will recognize that the present invention can be applicable to other various embodiment, and can revise its some details, and do not break away from the spirit and scope of the present invention at different aspect.
Description of drawings
Figure 1A is the vertical view that the present invention has the backlight module of the luminous and direct luminescence feature of side concurrently;
Figure 1B is the side view that the present invention has the backlight module of the luminous and direct luminescence feature of side concurrently;
Fig. 2 is the sketch map of the leaded light bar of one embodiment of the invention;
Fig. 3 is the profile of leaded light bar shown in Figure 2;
Fig. 4 is the sketch map that adopts the backlight module of a plurality of leaded light bars shown in Figure 2 in the one embodiment of the invention;
Fig. 5 is the profile of the leaded light bar of another embodiment of the present invention;
Fig. 6 is the profile of the leaded light bar of another embodiment of the present invention;
Fig. 7 is the sketch map of the backlight module of another embodiment of the present invention;
Fig. 8 is the side view of leaded light bar shown in Figure 7;
Fig. 9 is the part sectioned view of backlight module shown in Figure 7;
Figure 10 is the part sectioned view of the backlight module shown in Figure 7 with a speculum of one embodiment of the invention;
Figure 11 is the part sectioned view of the backlight module shown in Figure 7 of another embodiment of the present invention;
Figure 12 is the side cutaway view that the light of a leaded light bar of one embodiment of the invention spreads the site;
Figure 13 is the side cutaway view that the staggered light of a leaded light bar of one embodiment of the invention spreads the site;
Figure 14 is the part sectioned view of the backlight module shown in Figure 11 with a speculum of one embodiment of the invention;
Figure 15 is the part sectioned view of the backlight module shown in Figure 7 of another embodiment of the present invention; With
Figure 16 is the part sectioned view of the backlight module shown in Figure 15 with a speculum of another embodiment of the present invention.
Detailed Description Of The Invention
In following description, through with reference to accompanying drawing, and specific embodiment of the present invention is represented in explanation by way of example.It will be understood that, can make the change of structure or others to other embodiment that uses, and can not depart from the scope of the present invention.Moreover different embodiment and various aspects thereof can be used by any merging.So, the accompanying drawing in the specification with describe in detail only be counted as descriptive and nonrestrictive.
The invention provides a kind of leaded light bar that has the luminous and direct luminescence feature of side concurrently.The leaded light bar can be used for the backlight module of display.Embodiments of the invention also relate to a kind of illuminator and a kind of planar emission apparatus.
Figure 1A and 1B are vertical view and the side views that has the backlight module 10 of the luminous and direct luminescence feature of side concurrently.Shown in Figure 1A, backlight module 10 comprises that a plurality of leaded light bars 11,13 and 15 are placed on the substrate 18, and LED 12,14 and 16 of configuration on each at least one end in each leaded light bar 11,13 and 15.Shown in Figure 1B, the light that LED 12,14 and 16 produces will get into leaded light bar 11,13 and 15, and part light 21 will penetrate from the upper surface of leaded light bar 11,13 and 15.Because the leaded light bar characteristic of the present invention's innovation can be reached uniform light output and bigger mixed light district, so can reach the purpose that improves the LED spacing.In addition, said backlight module 10 does not resemble the luminous backlight module of side need use LGP, therefore can significantly reduce the weight and the cost of backlight module.
Fig. 2 is the sketch map of the leaded light bar 100 of one embodiment of the invention, and Fig. 3 is the profile of leaded light bar 100.As shown in Figure 3, leaded light bar 100 comprises a plurality of light-emitting faces 102,104 and 106 and a plurality of light reflection surface 112,114 and 116.In this embodiment, the section of leaded light bar 100 is hexagonal, and the corresponding light-emitting face in hexagonal each limit or a light reflection surface.As shown in Figure 2, be furnished with on the light reflection surface 112,114 and 116 one possess light diffusion function light diffusion site.In this embodiment, light diffusion site is the small salient point that a plurality of diameters are about 0.05～2mm, and preferably, the diameter of small salient point is about 0.2～0.3mm.Light-emitting face 102,104 and 106 meets the light of special angle and the refraction major part spreads the site from light light with reflection.This is can destroy total reflection condition because constitute the small salient point of light diffusion site, injects the light generation diffusion in leaded light bar 100 and make from LED, and changes the direct of travel of light.So these small salient points can make light reflect away from light-emitting face 102,104 and 106 with certain regularity of energy distribution more easily, thus the luminous efficiency and the uniformity of raising leaded light bar 100.
In this embodiment; The embodiment of light diffusion site is not limited to a plurality of small salient points; For example, light diffusion site also can be that a plurality of diameters are about the small rut of 0.05～2mm or the V groove that spacing is about 0.05～2mm, preferably; The diameter of small rut is about 0.2～0.3mm, and the spacing between the V groove is about 0.2～0.3mm.Said small salient point and small rut can utilize the mode of printing net-point and/or injection mo(u)lding on leaded light bar 100, to form respectively.Light diffusion site also can be implemented in the surface of leaded light bar 100 with the mode of ink-jet or printing.But, known by those of ordinary skills owing to form other numerous methods of small salient point and small rut, so in this not explanation one by one.
In addition, leaded light bar 100 has three light-emitting faces 102,104 and 106 among this embodiment, and all corresponding light reflection surface of each light-emitting face 102,104 and 106.So the amount of light that gives off from each light-emitting face 102,104 and 106 is uniform.In addition, can find that the radiation-curable angle that goes out light of leaded light bar 100 is far longer than the radiation-curable angle that goes out light of the semienergy angle of traditional LED (being about positive and negative 60 °) or traditional leaded light bar from Fig. 3.Therefore, use the backlight module of leaded light bar 100 among this embodiment to have the thinner mixed light district of the direct luminous lighting of tradition, thereby reduce the thickness of backlight module and display effectively.In addition, according to an alternative embodiment of the invention, light-emitting face 102,104 and 106 can be smooth surface, coarse surface or surface with special micro-structural.But, owing to this surface treatment method is known by those of ordinary skills, so in this not explanation one by one.
Fig. 4 is the sketch map that one embodiment of the invention adopts the backlight module 200 of leaded light bar shown in Figure 2.As shown in Figure 4, a plurality of leaded light bars are arranged on the substrate with arranged side by side or the mode of being parallel to each other.When the LED on any end (or two ends) at each leaded light bar was luminous, each leaded light bar was also with luminous, and the light that given off by the self-conductance striation of nationality mixes and the mixed light district that forms will provide a uniform in-plane light emitting source.Although above embodiment mainly describes leaded light bar and backlight module, use the display of above-mentioned leaded light bar and backlight module also to belong in the covering scope of claim of the present invention.
Fig. 5 is the profile of another preferred embodiment of the present invention leaded light bar 400.As shown in Figure 5, the section of leaded light bar 400 is octagons, and the corresponding light-emitting face in octagonal each limit or the light reflection surface with light diffusion site.And a straight line 410 through the octagon center capable of using is divided into eight limits the first half and the Lower Half that comprises four limits respectively just.The complete corresponding light-emitting face in the limit of the first half, and the complete corresponding light reflection surface in the limit of Lower Half.In other words, a plurality of light-emitting faces are that clustering is arranged, and a plurality of light reflection surface also is the clustering arrangement.Therefore; Although in above embodiment, described leaded light bar with hexagon or octagon section; But this area those skilled in the art can derive easily; The leaded light bar section of other preferred embodiment of the present invention can be a length of side number more than or equal to four polygon or length of side number more than or equal to four and be the polygon of even numbers, for example, and the odd plots of land that can be cultivated type.And if the length of side number of leaded light bar section is N, then the leaded light bar has light-emitting face and N/2 light reflection surface that clustering is arranged that N/2 clustering arranged.
Should be noted that according to other embodiments of the invention, leaded light bar section is not limited to a regular polygon.For example, according to one embodiment of the present of invention, what leaded light bar section also can be as shown in Figure 6 is the sort of.In addition; Leaded light bar section also can be that length of side number is the polygon of odd number, for example, and heptagon; And have light-emitting face and three light reflection surfaces that clustering is arranged that four clusterings are arranged, or have light-emitting face and four light reflection surfaces that clustering is arranged that three clusterings are arranged.The leaded light bar must have the light-emitting face of at least two light reflection surfaces and at least two correspondences, thereby can enlarge the radiation-curable angle that goes out light of leaded light bar.In sum, use the backlight module of leaded light bar provided by the invention or display to have following advantage at least.At first, compare, use the backlight module of leaded light bar of the present invention or display need not dispose LGP, thereby reduced the weight of backlight module with side is luminous.Secondly, use the backlight module of leaded light bar of the present invention or display can enlarge the LED spacing effectively, thereby can save cost.Moreover, compare with direct luminous type, use the backlight module of leaded light bar of the present invention and the thickness that display can reduce backlight module.In addition, use the backlight module of leaded light bar of the present invention and display need not dispose LGP and extra circuit board, thereby significantly reduce the general structure cost.
Fig. 7 relates to Figure 15 and combines the embodiment of Fig. 1 to the backlight module of the double-side of the said leaded light bar of Fig. 6.The backlight module of double-side is luminous on two different directions, therefore is specially adapted to display with double faces screen or other lighting apparatus.Although Fig. 1 combines to be used for double-side backlight module and display to the described embodiment of the invention of Fig. 6, Fig. 7 provides extra characteristic and function to the described embodiment of Figure 15.The description that Fig. 1 provides to Fig. 6 is equally applicable to Fig. 7 to the described embodiment of Figure 15, only if explain in addition.Equally, as long as suitable, the description that Fig. 7 provides to Figure 15 also goes for Fig. 1 to the described embodiment of Fig. 6.Although said embodiment is usually directed to backlight module, backlight module only is an example of the planar emission apparatus of embodiment of the present invention.So embodiments of the invention are not limited to also can be used for other planar emission apparatus as backlight.
Fig. 7 is the sketch map of another embodiment of the present invention backlight module 700.The normally dull and stereotyped profile of backlight module 700 has a plurality of leaded light bars 702, and its horizontal expansion is covered with backlight module.As scheme saidly, each leaded light bar 702 is placed on the plane in the backlight module usually.Setting is different from the mode described in Figure 1B, and each leaded light bar 11,13 is positioned on the substrate among Figure 1B.But the leaded light bar also can be positioned on the substrate, or settles as requested.Each leaded light bar 702 shown in Figure 7 is positioned to usually and makes that the limit of leaded light bar 702 is not intercepted, and light is allowed to pass through all limits of leaded light bar 702.
According to an embodiment, use one or more frameworks with groove, groove is configured to install an end of leaded light bar 702, thereby installs each leaded light bar 702.Usually, groove can be arranged in framework central authorities, and when making in framework is put backlight module 700 or display apparatus into, a plurality of leaded light bars 702 hang in the sky, and away from any surface.Framework can comprise LED or other light source, makes that LED presses close to the end of leaded light bar 702 when framework is connected the end of leaded light bar 702, and during opening power, the light that sends from LED will incide in the leaded light bar 702 from an end of leaded light bar 702.Each end of leaded light bar 702 is a light entrance face of leaded light bar 702.
According to an embodiment, the solid strip that leaded light bar 702 is normally processed by plastics or polymeric material.According to an embodiment, leaded light bar 702 can be processed by a kind of acrylic bar (acrylic rod).But, also can use the bar of any other suitable material to process.When light was applied to an end of leaded light bar 702, light was propagated in leaded light bar 702, also saw through the surface of leaded light bar 702, thereby passed the surface of leaded light bar and send light.Fig. 2 is said for another example, and according to application, can there be light diffusion site on the surface of leaded light bar 702 with diffusion and reflection ray.The total internal reflection of light in the leaded light bar can destroyed or upset in light diffusion site.Therefore, light diffusion site can increase the light diffusing capacity, the internal reflection of stray light, thus cause light from the leaded light bar, to shoot out.These light diffusion sites can or be made leaded light bar 702 at production period and are applied on the leaded light bar 702 subsequently.Light diffusion site can be being recessed to form in leaded light bar 702 of point, hole, hole, groove, impression or Any shape.These depressions can be aligned to any pattern on the surface of leaded light bar.Pattern also can be from leaded light bar 702 extended a plurality of convexities.For example, of Fig. 2, small salient point can be formed on the surface of leaded light bar 702.But, can use the convexity of Any shape, moreover, also can use depression with protruding combination or use separately or use together to form any desired pattern.In addition, depression also can and be combined to form wire with any desired structure with protruding.
Fig. 8 is the side view of the leaded light bar shown in Figure 7 of one embodiment of the invention.Show two LED 800 among the figure, be positioned at an end of leaded light bar 702 separately.But when considering to use, the embodiment of the invention can be used the LED of one or two LED 800 or any suitable number for each leaded light bar 702.Certainly, on an end of leaded light bar 702, can use two or more LED to import as light.Each end at leaded light bar 702 is a light entrance face 801.Light reflected ray 802 is used to describe the course of light in leaded light bar 702.Light 804 is used to describe light and the reverberation in leaded light bar 702 that sends from leaded light bar 702.
Fig. 9 is the part sectioned view of the backlight module shown in Figure 7 of one embodiment of the invention.Between first photosphere 903 and second photosphere 904 a plurality of leaded light bars 902 are arranged.First photosphere 903 is positioned on the first direction with respect to a plurality of leaded light bars 902.Second photosphere 904 is positioned on the second direction with respect to a plurality of leaded light bars 904.First photosphere 903 and second photosphere 904 are just as describing purposes.When implementing, each the leaded light bar 902 in the backlight module will be range upon range of by one or more layers material, like light film, liquid crystal layer, display pannel or some other surfaces.These adjacent layers are the plane normally, and near leaded light bar 902.Leaded light bar 902 has certain distance with first photosphere 903 and second photosphere 904 usually, because light not only can but also can penetrate along second direction (it is described to the direction of second photosphere 904) along first direction (it is described to the direction of first photosphere 903) ejaculation.According to an embodiment, leaded light bar 902 is equidistance with first photosphere 903 and second photosphere 904 usually.But embodiment also can not use this equidistance.
The light of leaded light bar 902 diffusion site is described as be on following three limits of hexagonal cross-section has a plurality of round dots 906.Though these round dots 906 have special shape, size, number and position, it will be understood that these round dots 906 only are used for describing, size, profile, number and the position shown in light diffusion site is not limited in accompanying drawing.On the contrary, can there be above-described any suitable constructions light diffusion site.And though round dot 906 also is shown under the surface that is positioned at leaded light bar 902, these round dots 906 just are used to describe purposes, and as previously discussed, it is depression or protruding that these patterns can form.
A plurality of arrow lines are used to describe the light that sends from leaded light bar 902.Referring to figs. 1 through 6, do not have the limit of round dot 906 to be called as light-emitting face, and have the limit of round dot 906 to be called as light reflection surface.Light reflection surface not necessarily reflects all internal light, and can send and spread light in addition.So light reflection surface also can be called as " light diffusingsurface " or " light emitting surface " at this.Light-emitting face penetrates light, also can be called as " light emitting surface " at this.Because light emitting surface usually can be by any depression or protruding the obstruction, so light emitting surface can send than the more substantial light of light diffusingsurface.Of Fig. 9, the arrow line that extends through light emitting surface is more than the arrow line that extends through light reflection surface.Of Fig. 9, the first half of leaded light bar 902 sends more light than the Lower Half of leaded light bar, so planar emission apparatus will be brighter on the direction of first photosphere 903, and not too bright on the direction of second photosphere 904.So the described structure of Fig. 9 provides a kind of asymmetric backing structure.
Generally speaking, each leaded light bar 902 shown in Figure 9 has three light emitting surfaces, and it disposes towards first photosphere 903 or towards first direction usually.Though two light emitting surfaces are arranged at an angle towards first direction, they remain towards first direction.Equally, each leaded light bar 902 has three light emitting surfaces with a plurality of round dots 906, representes that they also are the light diffusingsurfaces, and they are the second direction configuration towards second photosphere 904 usually.Though two light diffusingsurfaces are arranged at an angle towards second direction, they remain towards second direction.
Figure 10 is the part sectioned view of the backlight module shown in Figure 9 with a speculum of one embodiment of the invention.Be similar to the described embodiment of Fig. 9, the described embodiment of Figure 10 comprise a plurality of leaded light bar 1002,1004, first photosphere 903, second photosphere 904 and on following three limits of hexagonal cross-section by a plurality of round dots 906 described light diffusion sites.In backlight module, also comprise a speculum 1000.Said speculum 1000 has a common corrugated appearance, and alternating ridges (ridge) is arranged, and intersection is passed leaded light bar 902 in turn, makes speculum 1000 be positioned at every the same side at a distance from a leaded light bar 902.Speculum 1000 is divided into two groups with the leaded light bar, i.e. the first leaded light bar 1002 or upward leaded light bar, and the second leaded light bar 1004 or following leaded light bar.Because speculum 1000, the light that sends from last leaded light bar 1002 is less or can not influence the amount of light on the direction of second photosphere 904.Equally, the light that sends from following leaded light bar 1004 is less or can not influence the amount of light on the direction of first photosphere 903.So, on the last leaded light bar 1002 on corresponding LED and the following leaded light bar 1004 accordingly LED can also can independently be controlled at the brightness on this both direction by independent control, limit or be reduced in the interference between these two different directions.
Though Figure 10 is described to intersect in turn the single continuous speculum that passes the leaded light bar with other speculum shown in the drawings; But speculum can be a plurality of anti-ballistic striations; Each anti-ballistic striation all extends usually; And have a profile with leaded light bar 902 shape complementarities, make the neighbouring surface of mirror at the leaded light bar.According to said embodiment, single anti-ballistic striation can be placed near each leaded light bar.
Figure 11 is the part sectioned view of the backlight module shown in Figure 7 of another embodiment of the present invention.Be similar to the described embodiment of Fig. 9, the described embodiment of Figure 11 comprises a plurality of leaded light bar 1102, first photosphere 903 and second photosphere 904.The described embodiment of Figure 11 also comprises light diffusion site, by 906 descriptions of a plurality of round dots on the bottom and upper segment of leaded light bar 1102.In an embodiment, all bottom and upper segments do not need light diffusion site, but can there be a light diffusion site one or more top, and can there be a light diffusion site in one or more bottom.According to another embodiment, said one or more tops are said one or more bottoms of relative leaded light bar 1102 just in time.
Figure 12 and 13 describes the light diffusion site of the embodiment of the invention.The light diffusion site of Figure 12 and 13 is described in conjunction with the described embodiment of Figure 11.But this variation on light diffusion site can be integrated in other embodiment equally.
Figure 12 is the side cutaway view that the light of a leaded light bar of one embodiment of the invention spreads the site.On the top and bottom of leaded light bar 1102, light diffusion site 1202 is spread the whole length that covers leaded light bar 1102 in fact.Although only show to have light diffusion site 1202, in fact also can be that the whole length on leaded light bar 1102 all limits (comprising top and bottom) all has light diffusion site 1202 in the top and the bottom of leaded light bar 1102.
Figure 13 is the side cutaway view that the light that is staggered of a leaded light bar of one embodiment of the invention spreads the site.Staggered top light diffusion site 1302 is arranged at the top along leaded light bar 1102, and along the bottom of leaded light bar 1102 staggered bottom light diffusion site 1304 is arranged.Staggered top light diffusion site 1302 and the bottom light diffusion site 1304 that interlocks be skew one segment distance each other, makes the light at leaded light bar 1102 tops spread the position of site, and the light that just in time is positioned at leaded light bar 1102 bottoms spreads on the position of ignoring the site.The described staggered light diffusion site of Figure 13 only is a staggered example that changes on leaded light bar 1102, also can use other the staggered site with other length and variation.Staggered top light diffusion site 1302 also can some be overlapping with staggered bottom light diffusion site 1304.
Figure 14 is the partial cutaway schematic of the backlight module shown in Figure 11 with a speculum of one embodiment of the invention.The described embodiment of Figure 14 is similar to embodiment shown in Figure 11, and it has a plurality of leaded light bar 1402,1404, first photosphere 903 and second photosphere 904.But, be similar to the described embodiment of Figure 10, also comprise a speculum 1406, and the leaded light bar is divided into two groups, promptly go up leaded light bar 1402 and following leaded light bar 1404.Relevant Figure 10 is equally applicable to the described embodiment of Figure 14 to the description of speculum.
Figure 15 is the partial cutaway schematic of the backlight module shown in Figure 7 of another embodiment of the present invention.Be similar to the described embodiment of Fig. 9, the described embodiment of Figure 15 comprises a plurality of leaded light bar 1502,1504, first photosphere 903 and second photosphere 904.But the light diffusion site of the said embodiment of Figure 15 is every at a distance from a leaded light bar with regard to alternate once.The leaded light bar that has light diffusion site in first side forms first group of leaded light bar 1502, and forms second group of leaded light bar 1504 at the leaded light bar that second side has a light diffusion site.So two adjacent leaded light bars have different light diffusion sites.Light diffusion site alternately changing on the leaded light bar produces following effect: promptly first group of leaded light bar 1502 launched more a large amount of light on the direction of first photosphere 903, and second group of leaded light bar 1504 launched more a large amount of light on the direction of second photosphere 904.So, be similar to the speculum that uses in Figure 10,14 and 16, between two different facial of backlight module some independence can be arranged.Can independently control first group of leaded light bar 1502 and adjust the amount of light of promptly sending on first photosphere, 903 directions towards first direction, thus the amount of light that little effect promptly sends on second photosphere, 904 directions towards second direction.Equally, can independently control second group of leaded light bar 1504.
Figure 16 is the partial cutaway schematic of the backlight module shown in Figure 15 with a speculum of one embodiment of the invention.The described embodiment of Figure 16 is similar to embodiment shown in Figure 15, and it has a plurality of leaded light bar 1502,1504, first photosphere 903 and second photosphere 904.But, be similar to the described embodiment of Figure 10, also comprise a speculum, therefore further increase the independence between first group of leaded light bar 1502 and the second group of leaded light bar 1504.Relevant Figure 10 is equally applicable to the described embodiment of Figure 16 to the description of speculum.
Although described the present invention especially with reference to said embodiment, those of ordinary skills still can be in the change of carrying out under the situation that does not deviate from the spirit and scope of the present invention on form and the details.For example, can be used for the leaded light bar though some material is described, embodiments of the invention are not limited to these materials.And, use though embodiments of the invention are described with LED, but still can use the light source and the light-emitting device of other type.In addition, although described some light diffusion site, but still can use other suitable pattern, and have no the leaded light bar of light diffusion site also can use with embodiments of the invention.The light-emitting device embodiment that describes is a planar alignment.But the leaded light bar can be placed with other arrangement mode, arrange like two-layer or three layer planes, wherein a plurality of leaded light bars be arranged to a plurality of groups and be aligned to two-layer or three layer planes in.
So, more than describes and be intended to provide example embodiment of the present invention, and scope of the present invention does not receive the restriction of the concrete example that provides.
Claims (17)
1. the planar emission apparatus of a double-side comprises:
A plurality of leaded light bars; Wherein said a plurality of leaded light bar is positioned in the plane; Each leaded light bar comprises that each leaded light bar also comprises first end and second end towards first group of light emission surface of first direction configuration and the second group of light emission surface that disposes towards second direction, and it is used to receive light; Wherein a plurality of leaded light bars are configured to launch light from first and second groups of light emission surfaces, and said a plurality of leaded light bars are divided into first group of leaded light bar and second group of leaded light bar according to following condition:
In said first group of leaded light bar, at least one light emission surface in first group of light emission surface of each leaded light bar has light diffusion site;
In said second group of leaded light bar, at least one light emission surface in second group of light emission surface of each leaded light bar has light diffusion site.
2. the planar emission apparatus of double-side according to claim 1, wherein light diffusion site is included in a plurality of depressions that form on the leaded light bar surface.
3. the planar emission apparatus of double-side according to claim 1, wherein light diffusion site is included in a plurality of convexities that form on the leaded light bar surface.
4. the planar emission apparatus of double-side according to claim 1; Also be included on the first direction near first photosphere of a plurality of leaded light bars and on second direction near second photosphere of a plurality of leaded light bars, wherein a plurality of leaded light bars are positioned between first photosphere and second photosphere.
5. the planar emission apparatus of double-side according to claim 4, wherein first photosphere is the first illuminated layer, and second photosphere is the second illuminated layer.
6. the planar emission apparatus of double-side according to claim 4; Wherein each leaded light bar has first end and second end; And planar emission apparatus also comprises the framework of each leaded light bar first end of one or more linkings and second end; Said one or more framework comprises one or more light sources; It is set at least one end in first end and second end and makes light go into to inject each leaded light bar, and wherein said one or more frameworks are placed in a plurality of leaded light bars between first photosphere and second photosphere.
7. the planar emission apparatus of double-side according to claim 1, wherein planar emission apparatus also comprises and being placed near first end of each leaded light bar and a plurality of LED of at least one end in second end.
8. the planar emission apparatus of a double-side comprises:
First group of leaded light bar; Be positioned in the plane; Each leaded light bar comprises towards first group of light emission surface of first direction configuration and the second group of light emission surface that disposes towards second direction; Wherein at least one light emission surface in first of first group of leaded light bar group of light emission surface has light diffusion site, and wherein each the leaded light bar in first group of a plurality of leaded light bar all has a termination to receive light; With
Second group of leaded light bar; Each leaded light bar in second group of leaded light bar comprises towards first group of light emission surface of first direction configuration with towards second group of light emission surface of second direction configuration; Wherein second group of leaded light bar placed with first group of leaded light bar successively at interval; Each leaded light bar in second group of leaded light bar all with first group of leaded light bar at least one leaded light bar adjacent; And wherein at least one light emission surface in second of second group of leaded light bar group of light emission surface has light diffusion site, and wherein each the leaded light bar in second group of leaded light bar all has a termination to receive light
Said second group of leaded light bar placed at interval with first group of leaded light bar successively and comprised following situation:
Second group of leaded light bar placed with first group of leaded light bar successively one by one at interval;
Per two leaded light bars are a unit in second group of leaded light bar, place with the unit interval that the one or more leaded light bars in first group of leaded light bar are formed.
9. the planar emission apparatus of double-side according to claim 8; Also comprise a plurality of anti-ballistic striations; Wherein each the leaded light bar in first group of leaded light bar comprises that all an anti-ballistic striation is near first group of light emitting surface; And wherein each the leaded light bar in second group of leaded light bar all comprises an anti-ballistic striation near second group of light emitting surface, and wherein each anti-ballistic striation all covers the neighbouring surface of corresponding leaded light bar.
10. the planar emission apparatus of double-side according to claim 8; Also comprise a speculum; Wherein speculum has corrugated structure, makes speculum both near first group of light emitting surface of first group of leaded light bar, also near second group of light emitting surface of second group of leaded light bar.
11. according to the planar emission apparatus of claim 9 or 10 described double-sides, wherein light diffusion site is included in a plurality of depressions that form on the leaded light bar surface.
12. according to the planar emission apparatus of claim 9 or 10 described double-sides, wherein light diffusion site is included in a plurality of convexities that form on the leaded light bar surface.
13. according to the planar emission apparatus of claim 9 or 10 described double-sides, wherein second of first group of leaded light bar group of light emitting surface has light diffusion site, and wherein first group of light emitting surface of second group of leaded light bar has light diffusion site.
14. the planar emission apparatus of double-side according to claim 8, wherein light diffuser screen point destroys the total internal reflection of light in the leaded light bar.
15. the planar emission apparatus of double-side according to claim 8; Also be included on the first direction first photosphere near a plurality of leaded light bars; And on second direction near second photosphere of a plurality of leaded light bars, wherein a plurality of leaded light bars are positioned between first photosphere and second photosphere.
16. the planar emission apparatus of double-side according to claim 11; Wherein each leaded light bar comprises first end and second end; And planar emission apparatus comprises that also one or more frameworks are used to be connected each leaded light bar first end and second end; Said one or more framework comprises one or more light sources; It is set at least one end of first end and second end and makes light go into to inject in each leaded light bar, and wherein said one or more frameworks are placed in a plurality of leaded light bars between first photosphere and second photosphere.
17. the planar emission apparatus of a double-side comprises:
First group of leaded light bar; Each leaded light bar in first group of leaded light bar comprises towards first group of light emitting surface of first direction configuration with towards second group of light emitting surface of second direction configuration; Wherein at least one light emitting surface in first of first group of leaded light bar group of light emitting surface has light diffusion site, and wherein in first group of leaded light bar each leaded light bar comprise that at least one end is in order to receive light;
Second group of leaded light bar; Each leaded light bar in second group of leaded light bar comprises towards first group of light emitting surface of first direction configuration with towards second group of light emitting surface of second direction configuration; Wherein second group of leaded light bar settled with first group of leaded light bar successively at interval; Each leaded light bar all is close to a leaded light bar in first group of leaded light bar in second group of leaded light bar; And wherein at least one light emitting surface in first of second group of leaded light bar group of light emitting surface has light diffusion site, and wherein each the leaded light bar in second group of leaded light bar has at least one end to be configured to receive light;
Said second group of leaded light bar placed at interval with first group of leaded light bar successively and comprised following situation:
Second group of leaded light bar placed with first group of leaded light bar successively one by one at interval;
Per two leaded light bars are a unit in second group of leaded light bar, place with the unit interval that the one or more leaded light bars in first group of leaded light bar are formed;
One or more LED are placed at least one end near first and second groups of leaded light bars; And
A speculum or a plurality of anti-ballistic striation; Said speculum is set to make the first group light emitting surface of speculum near first group of leaded light bar; And near second group of light emitting surface of second group of leaded light bar; Said anti-ballistic striation has a profile complementary with the leaded light strip, and be set up and make its first group of light emitting surface near first group of leaded light bar, or near second group of light emitting surface of second group of leaded light bar.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2008/072527 WO2010034154A1 (en) | 2008-09-25 | 2008-09-25 | Light guiding strip and double-sided planar light apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101542189A CN101542189A (en) | 2009-09-23 |
| CN101542189B true CN101542189B (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800001721A Expired - Fee Related CN101542189B (en) | 2008-09-25 | 2008-09-25 | Light guide bars and plane lighting device with dual-surface lighting |
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| Country | Link |
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| CN (1) | CN101542189B (en) |
| WO (1) | WO2010034154A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2483852A (en) * | 2010-09-21 | 2012-03-28 | Power Data Comm Co Ltd | Back light plate with juxtaposed light bars |
| US9140421B2 (en) * | 2011-08-12 | 2015-09-22 | Tsmc Solid State Lighting Ltd. | Lighting device for direct and indirect lighting |
| CN104696780B (en) * | 2013-12-05 | 2017-04-26 | 富泰华精密电子（郑州）有限公司 | Backlight module and light source assembly thereof |
| CN107565712A (en) * | 2017-10-23 | 2018-01-09 | 京东方科技集团股份有限公司 | Wireless charging device and display device |
| CN114263869B (en) * | 2021-12-29 | 2023-06-06 | 重庆长安汽车股份有限公司 | Automobile atmosphere lamp and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201029016Y (en) * | 2006-11-14 | 2008-02-27 | 星磊电子(深圳)有限公司 | Two-sided luminous back light source |
| CN101191905A (en) * | 2006-11-30 | 2008-06-04 | 香港应用科技研究院有限公司 | Light strip and backlight module and display using same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI315017B (en) * | 2005-12-23 | 2009-09-21 | Innolux Display Corp | Light guide plate and backlight module using the same light guide plate |
| JP2008078097A (en) * | 2006-09-25 | 2008-04-03 | Kyoho:Kk | Light guide plate for led-chip light source |
-
2008
- 2008-09-25 CN CN2008800001721A patent/CN101542189B/en not_active Expired - Fee Related
- 2008-09-25 WO PCT/CN2008/072527 patent/WO2010034154A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201029016Y (en) * | 2006-11-14 | 2008-02-27 | 星磊电子(深圳)有限公司 | Two-sided luminous back light source |
| CN101191905A (en) * | 2006-11-30 | 2008-06-04 | 香港应用科技研究院有限公司 | Light strip and backlight module and display using same |
Non-Patent Citations (1)
| Title |
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| JP特开-2008078097A 2008.04.03 |
Also Published As
| Publication number | Publication date |
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| WO2010034154A1 (en) | 2010-04-01 |
| CN101542189A (en) | 2009-09-23 |
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