CN101232064B - Illuminating device - Google Patents
Illuminating device Download PDFInfo
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- CN101232064B CN101232064B CN2007100960881A CN200710096088A CN101232064B CN 101232064 B CN101232064 B CN 101232064B CN 2007100960881 A CN2007100960881 A CN 2007100960881A CN 200710096088 A CN200710096088 A CN 200710096088A CN 101232064 B CN101232064 B CN 101232064B
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- light
- emitting device
- upper side
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- raceway groove
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
Abstract
The application discloses a light emitting device, which comprises a light channel formed on a pedestal and a light emitting unit, wherein the light channel includes an upper side surface, a lower side surface opposite to the upper side surface, an inner side surface respectively forming different included angles with the upper and the lower side surfaces, and a light emergent surface opposite to the inner side surface; and the light emitting unit is positioned on the inner side surface for emitting light in the light channel and transmitting the light towards the light emergent surface. In an embodiment, the light emergent surface of the light emitting device is a bevel surface, and a lens array is arranged thereon.
Description
Technical field
The present invention relates to a kind of light-emitting device, relate in particular to a kind of side luminescent light-emitting device and application thereof.
Background technology
Figure 10 is the side cutaway view that shows known side luminescent light-emitting diode (side view light-emitting diode).Known side luminescent light-emitting diode 50 comprises substrate 51, be bonded to tube core 53 in the substrate 51, in order to the upper side wall 52A that covers and/or reflect tube core 53 emitted light and lower wall 52B (light-emitting diode of some pattern has left and right sides sidewall), and packing material 54.
With light (as shown by arrows), can can't leave light-emitting diode 50 shaking back and forth between tube core 53 and upper side wall 52A and/or between tube core 53 and lower wall 52B most probably near 90 degree directive sidewall 52A and 52B.Moreover, sidewall thickness because of light-emitting diode 50 sizes dwindle day by day with attenuation, cause light to pass sidewall and cause light leak.Because above-mentioned or other reasons, on the practice, the light extraction efficiency of encapsulation back tube core may decline to a great extent compared to the light extraction efficiency of naked pipe core and reach 40%.
In addition, the distance between sidewall is also shortened in the light-emitting diode miniaturization, makes packing material 54 be difficult for inserting in the space that sidewall surrounds and produces the space.Light may be limited in this space and reduce the light extraction efficiency of light-emitting diode.
Summary of the invention
Comprise light raceway groove and the luminescence unit that is formed on the pedestal according to light-emitting device of the present invention, wherein the light raceway groove comprise upper side, with respect to the downside of upper side, respectively with upper side and downside form the different angles angle medial surface, reach exiting surface with respect to medial surface; Luminescence unit is positioned on the medial surface, and emits beam in the light raceway groove towards the exiting surface transmission.
According to light-emitting device of the present invention also comprise first reflector that covers on medial surface and the downside, cover top, first reflector and make conductive layer that luminescence unit is electrically connected with circuit, second reflector of the opposite side that is positioned at downside; Preferred embodiment also comprises first insulating barrier between between first reflector and conductive layer.Can insert packing material in the light raceway groove.
In one embodiment, exiting surface is parallel to medial surface or substantially substantially perpendicular to one or form the angle of different angles respectively with upper side and downside at least in upper side and the downside.Exiting surface also can be cambered surface.Upper side also can be selected parallel substantially downside.In addition, in medial surface and the downside at least the part of one can be cambered surface.The outer rim of upper side forms otch, and the metal residue that is produced when avoiding cut crystal (wafer) or the pollution of scolder overflow cause the luminescence unit short circuit.
In another embodiment, conductive layer comprises first conductive layer and second conductive layer.The electrode of luminescence unit is electrically connected with second conductive layer with first conductive layer respectively.
Moreover luminescence unit can send two or more coloured light or send red, blue or green light.More can comprise material for transformation of wave length in the light-emitting device comes the light of selfluminous cell and produces exciting light with reception.In one embodiment, material for transformation of wave length directly overlays on the luminescence unit.
Light-emitting device of the present invention can combine with display unit, and also comprises light guide plate with the light that receives selfluminous cell and change its direction.The incidence surface of light guide plate should have and the corresponding geometric profile of exiting surface.Particularly, light-emitting device also comprises the side that is positioned at this light guide plate and in order to the reflector of reflection ray, blooming, and liquid crystal layer, wherein, blooming and liquid crystal layer are positioned at the opposite side of light guide plate.
Description of drawings
Figure 1A and 1B are the light-emitting devices that shows according to the embodiment of the invention;
Fig. 2 A and 2B are the stereograms that shows according to the part luminous device structure of a preferred embodiment of the invention;
Fig. 3 A and 3B are the optical track figure that shows according to the light-emitting device of one embodiment of the invention;
Fig. 4 A～4G is the light-emitting device that shows another embodiment of the present invention;
Fig. 5 A～5C is the light-emitting device that shows further embodiment of this invention;
Fig. 6 is the schematic diagram that shows the light-emitting device of yet another embodiment of the invention;
Fig. 7 A and 7B show that light-emitting device of the present invention is applied to the schematic diagram of display;
Fig. 8 A～8I is the technology that shows according to the light-emitting device of the preferred embodiment of the present invention;
Fig. 9 A～9F is the technology that shows according to the light-emitting device of another embodiment of the present invention; And
Figure 10 is the side cutaway view that shows known side luminescent light-emitting diode.
Description of reference numerals
10 light-emitting devices, 17 packing materials
11 pedestal 17A material for transformation of wave length
111 upper table surfaces, 18 second insulating barriers
19 second reflector, 112 inclined-planes
113 following tables, 20 exiting surfaces
114 grooves, 30 light guide plate
115 otch, 31 reflectance coatings
116 Si
3N
4 Film 32 bloomings
117 medial surfaces, 33 liquid crystal layers
12 first reflector, 34 reflectors
13 first insulating barriers, 35 surfaces
14 conductive layers, 50 light-emitting diodes
14A conductive layer 51 pedestals
14B conductive layer 52A upper side wall
15 conductive layer 52B lower wall
16 luminescence units, 53 tube cores
16A lead 54 packing materials
Embodiment
Shown in Figure 1A, light-emitting device 10 comprises pedestal 11, first reflector 12, first insulating barrier 13, conductive layer 14, luminescence unit 16, packing material 17, material for transformation of wave length 17A, second insulating barrier 18, reaches second reflector 19.
In one embodiment, pedestal 11 is made of silicon (silicon), and has upper table surface 111, inclined-plane 112, and following table 113.First reflector 12, first insulating barrier 13, and conductive layer 14 be formed in regular turn on the inclined-plane 112, wherein, first reflector 12 covers upper table surfaces 111, inclined-plane 112, reaches following table 113 with first insulating barrier 13.Conductive layer 14 covers upper table surface 111 and inclined-plane 112.Luminescence unit 16, for example LED core is fixed on the conductive layer 14.Second insulating barrier 18 and second reflector 19 are formed at the opposite side of following table 113.Packing material 17 is formed between first insulating barrier 13 and second insulating barrier 18.
Can also comprise the material for transformation of wave length 17A as fluorescent material etc. in the packing material 17, it can be produced the light of different wave length by the optical excitation of luminescence unit 16.Shown in Figure 1B, phosphor powder layer can also directly overlay the surface of luminescence unit 16 arbitrary possibility bright dippings.The phosphor powder layer thickness of each light output surface is adjusted according to required light field or color, can be identical can also be different.Correlation technique sees also this case applicant's No. the 093126439th, TaiWan, China patent application.
The detailed description of conductive layer of the present invention is shown in Fig. 2 A. Conductive layer 14A and 14B are formed on the insulating barrier 13, and are electrically connected with the n electrode with the p electrode of light-emitting diode respectively.In detail, being fixed on the conductive layer 14A of the n electrode of vertical LED or p electrode, another electrode then is electrically connected with conductive layer 14B with lead or other connected modes.The p electrode and the n electrode of horizontal light-emitting diode can be separately fixed on conductive layer 14A and the 14B, that is are placed on the conductive layer in flip chip bonding (flip-chip) mode.Perhaps, if the horizontal light-emitting diode is carried by insulated substrate, then insulated substrate one of can directly be placed among conductive layer 14A and the 14B, or across this two conductive layer, and the p electrode is electrically connected with 14B with conductive layer 14A with lead or other connected modes respectively with the n electrode.Light-emitting diode or tube core with insulated substrate can also directly be arranged on inclined-plane 112, first reflector 12 or the insulating barrier 13.Shown in Fig. 2 B, reflector 12 electric conducting materials and link to each other with lead 16A, that is luminescence unit 16 penetration layers 12 are electrically connected with external circuit.At this moment, the overlay area viewable design of first reflector 12 and insulating barrier 13 need be adjusted.
As shown in Figure 3A, according to one embodiment of the present of invention, the part light of luminescence unit 16 sides can be distinguished directive first reflector 12 and second reflector 19.Because conductive layer 14 is different with the angle in first reflector 12 and second reflector 19 on the inclined-plane, makes light be reflected onto different directions.In one embodiment, inclined-plane 112 is 120 degree with the angle D1 of following table 113, and the angle in conductive layer 14 sloping portions and first reflector 12 equals D1.The light R1 in directive second reflector 19 can leave light-emitting device 10 through behind the secondary reflection.The light R2 in directive first reflector 19 can reflect through primary event or in first reflector 12 and 19 in second reflector and leave light-emitting device 10.Shown in Fig. 3 B, 113 of inclined-plane 112 and following tables for example can be cambered surface, and its angle is D1.Cambered surface can be fixedly curvature or variable curvature, and curvature changing can be two dimension or three dimensions function.Can effectively discharge according to design of the present invention and to be confined to the light in the encapsulating structure and to promote the light-emitting device light extraction efficiency.
Shown in Fig. 4 A, the exiting surface 20 of light-emitting device 10 and inclined-plane 112 are parallel or tilt with respect to following table 113 with angle D2.The pass through exiting surface 20 that tilts of light can be refracted and changes direction, therefore if suitable set angle D2, can directing light towards specific direction.In another embodiment, if angle D2=60 °, light field or light R3 will be offset towards the below.Shown in Fig. 4 B and Fig. 4 C, the exiting surface 20 of light-emitting device 10 is a cambered surface, and cambered surface can be fixedly curvature or variable curvature, and curvature changing can be two dimension or three dimensions function.Curved surface can produce various light field.Under suitable cambered surface design, even there is not the configuration in second insulating barrier 18 and second reflector 19, light also can on the interface of cambered surface and surrounding medium through once or after the total reflection of several from exiting surface 20 ejaculations.
Shown in Fig. 4 D, in the another embodiment of the present invention, light-emitting device 10 comprises a plurality of exiting surfaces 20, each adjacent exiting surface is with respect to the plane of reference, and for example following table 113, angle and inequality, therefore, also different with the light of the same angle incident ejaculation angle after via each exiting surface refraction.In addition, the angle that exiting surface 20 and following table are 113 is littler, light field skew downwards; Anti-, then be offset towards the top.The external form profile of this exiting surface can form the part from polyhedron (polyhedron).In other a plurality of examples, at least a portion or a plurality of at least exiting surface 20 are cambered surface, matsurface in the exiting surface 20, form as Fig. 4 E～4G or by lens.Can control the whole light field of light-emitting device 10 by the exiting surface of combination different angles and pattern.
Still can form the micro lens 201 more than two on the exiting surface 20 in the various embodiments described above.Shown in Fig. 5 A, lens 201 are transversely arranged on exiting surface 20.Light leaves the exiting surface 20 of light-emitting device 10 via a plurality of lens 201 guidings.By these lens 201, light-emitting device 10 presents and has than wide-angle or have light field than uniform color mixture light.If the luminescence unit 16 in the light-emitting device 10 can produce two or more coloured light, lens 201 will help the mixing of these coloured light.In addition, lens 201 also help the mixing of multiple beam.Yet vertically the lens of configuration also can optionally use it.Lens 201 can be convex lens or concavees lens.The radius of lens 201 is between 50 μ m～60 μ m.
In addition, shown in Fig. 5 B, show the top view of light-emitting device 10 shown in Fig. 4 C with lens 201.The radius of lens 201 is along extending route change, and in this example, it is big that the radius of lens 201 from top to bottom becomes gradually.Moreover, shown in Fig. 5 C, having in the light-emitting device 10 of lens arra 201, the medial surface 117 in the light raceway groove can be vertical plane and is not limited to the inclined-plane.
The luminescence unit 16 of light-emitting device 10 of the present invention is not limited to only be fixed in the single side of light raceway groove, can also be fixed in the either side of light raceway groove.As shown in Figure 6, comprise two or more inclined-plane 112 in the light raceway groove, and inclined-plane 112 is positioned at the phase heteropleural of light raceway groove.Luminescence unit 16 that can secure any number on the inclined-plane 112.If the reflector that two inclined-planes 112 toward each other, are formed on the inclined-plane can make progress the light reflection that comes from subtend.If have an inclined-plane 112 respectively around the light raceway groove, and the reflector is formed on inclined-plane 112 and the following table 113, come from the luminescence unit 16 on each inclined-plane 112 light will for the reflective layer reflects on each inclined-plane up.
According to another embodiment of the present invention, comprise two or more luminescence units 16 in the light-emitting device 10, these luminescence units 16 can send the combination of same coloured light, different coloured light or non-visible wavelength light or above-mentioned various rays.The configuration mode of luminescence unit 16 depends on the electrode design of indivedual luminescence units 16, and detailed content please refer to aforementioned explanation about Fig. 2 B.Can produce white light behind luminescence unit 16 mixed lights of red, blue, green three looks, perhaps the luminescence unit 16 of two kinds of complementary colours can also produce white light.
Above-mentioned design helps in the product that luminescence unit is applied to the special light fields of needs such as backlight liquid crystal display module.Shown in Fig. 7 A, the side casting type LCD mainly comprises light guide plate 30, reflectance coating 31, blooming 32, reaches liquid crystal layer 33.The geometry of light guide plate 30 incidence surfaces changes with the exiting surface 20 of light-emitting device 10.In this example, incidence surface is consistent with exiting surface 20 profiles, only limits to this but application of the present invention is non-, and other configurations that can engage with light-emitting device 10 all can be adopted.Coming from incidence surface through reflect after the directive light guide plate bottom of the light R4 of luminescence unit 16 in light guide plate 30, is that reflectance coating 31 reflections are towards blooming 32 and liquid crystal layer 33 again.In the present embodiment, the angle of exiting surface 20 is different from above embodiment to cooperate the design of display.
The rising angle of light-emitting device 10 can be controlled with respect to the angle of inclination of the plane of reference by changing exiting surface.Glancing incidence light can expose to position far away by the exiting surface at big angle of inclination; Anti-, light only can expose to nearer position by the exiting surface at less angle of inclination.Shown in Fig. 7 B, two have the exiting surface 20A of different angles and the homonymy that 20B is disposed at reflector 34, and wherein, these two exiting surface 20A and 20B can be formed at single or independently on the light-emitting device 10.By than light (light field) R5 of wide-angle exiting surface 20A after reflecting directive apart from exiting surface position far away; And light (light field) R6 by smaller angle exiting surface 20B after reflecting directive apart from the nearer position of exiting surface.Light after reflector 34 reflection directive away from the direction of reflector.Under this design,, light is uniformly distributed on certain zone even do not use light guide plate 30 among Fig. 7 A.The above-mentioned exiting surface with different rising angle can be respectively different light-emitting device and have, or is formed on the single light-emitting device.Moreover light-emitting device can be disposed at the edge more than or two of reflector.
In addition, the surface 35 of reflector 34 can be matsurface, has projection and depression on it.The light that exposes to matsurface will be towards not specific direction scattering.In one embodiment, the distribution density of this projection and depression is along with increasing away from the position of exiting surface.Yet projection also can be evenly with depression or is distributed in arbitrarily on the surface 35.Projection and depressed patterns can be mixed for point-like, strip, hole or its.
Making flow process of the present invention below is described.
At first, shown in Fig. 8 A, prepared silicon substrate 11.Then, shown in Fig. 8 B～8E, be aided with oxide mask (not shown) and KOH etching solution, non-grade forms grooves 114 to etching silicon substrate 11, groove 114 have upper table surface 111, inclined-plane 112, with following table 113.Cover in regular turn first reflector 12 and first insulating barrier 13 in upper table surface 111, inclined-plane 112, with following table 113 on.Cover conductive layer 14 and 15 again and be positioned at the zone of upper table surface 111 and 112 tops, inclined-plane in first insulating barrier 13.Luminescence unit 16 is fixed on conductive layer 14 and/or 15, and optionally goes between.Packing material 17 is injected groove 114, cover second insulating barrier 18 and second reflector 19 more in regular turn, shown in Fig. 8 F and 8G.Cut silicon substrate 11 at last and finish independently light-emitting device 10.In addition, cause luminescence unit 16 short circuits or scolder to pollute the sidewall of luminescence unit 16, can before cutting, form otch 115 (dotted portion is represented the luminous device structure that another links to each other) earlier, shown in Fig. 8 H and 8I for avoiding metal residue.Before otch 115 can also be formed at 13 coverings of first insulating barrier, that is first insulating barrier 13 covers on the otch.In the above-mentioned explanation, each layer can be uniform thickness or non-uniform thickness, depends on process conditions or design needs.
Technology of the present invention also can have other selections.For example, shown in Fig. 9 A and Fig. 9 B, at first, on the surface of silicon substrate 11, form Si
3N
4Film 116, and etching Si
3N
4Film 116 to be to form pattern, wherein, and Si
3N
4Film can be formed at other surfaces of substrate 11 simultaneously for the technology facility.As mask, use KOH solution etching substrates 11 with this pattern to form groove 114 and otch 115.Then remove Si by dry ecthing
3N
4Film 116.Import as the reacting gas of oxygen etc. makes the surface reaction formation insulating layer of silicon oxide 13 of itself and silicon substrate 11.The step that repeats again behind Fig. 8 D forms light-emitting device 10.
Though the present invention illustrated as above, so its be not in order to limit the scope of the invention, enforcement order or the material and technology method used.For various modifications and the change that the present invention did, neither spirit of the present invention and the scope of taking off.
Claims (30)
1. light-emitting device comprises:
The light raceway groove is formed on the pedestal, comprises:
Upper side;
Downside is with respect to this upper side;
Medial surface forms the angle of different angles respectively with this upper side and this downside; And
Exiting surface is with respect to this medial surface; And
Luminescence unit is positioned on this medial surface, and wherein, this luminescence unit emits beam in this light raceway groove towards this exiting surface transmission.
2. light-emitting device as claimed in claim 1 also comprises:
First reflector covers on this medial surface;
Conductive layer covers this top, first reflector, and is electrically connected with this luminescence unit; And
Second reflector is positioned on this upper side.
3. light-emitting device as claimed in claim 2 also comprises:
First insulating barrier is between this first reflector and this conductive layer.
4. light-emitting device as claimed in claim 2 also comprises:
Packing material is inserted in this light raceway groove at least.
5. light-emitting device as claimed in claim 1, wherein this exiting surface is parallel to this medial surface substantially.
6. light-emitting device as claimed in claim 1, wherein this exiting surface is substantially perpendicular to one at least in this upper side and this downside.
7. light-emitting device as claimed in claim 1, wherein this exiting surface forms the angle of different angles respectively with this upper side and this downside.
8. light-emitting device as claimed in claim 1, wherein this exiting surface is a cambered surface.
9. light-emitting device as claimed in claim 1, wherein parallel substantially this downside of this upper side.
10. light-emitting device as claimed in claim 2, wherein this conductive layer comprises first conductive layer and second conductive layer.
11. light-emitting device as claimed in claim 10, wherein this luminescence unit comprises a plurality of electrodes and is electrically connected with this second conductive layer with this first conductive layer respectively.
12. light-emitting device as claimed in claim 1, wherein this luminescence unit sends two or more coloured light.
13. light-emitting device as claimed in claim 1, wherein this luminescence unit sends red, blue or green light.
14. light-emitting device as claimed in claim 1, wherein this medial surface and this downside at least the part of one be cambered surface.
15. light-emitting device as claimed in claim 1, wherein the outer rim of upper side forms otch.
16. light-emitting device as claimed in claim 1 also comprises:
Material for transformation of wave length is in order to receive from the light of this luminescence unit and to produce exciting light.
17. light-emitting device as claimed in claim 16, wherein this material for transformation of wave length directly overlays on this luminescence unit.
18. light-emitting device as claimed in claim 1 also comprises:
Light guide plate is in order to receive from the light of this luminescence unit and to change its direction.
19. light-emitting device as claimed in claim 18, wherein the incidence surface of this light guide plate has and the corresponding geometric profile of this exiting surface.
20. light-emitting device as claimed in claim 18 also comprises:
The reflector is positioned at a side of this light guide plate, in order to reflection ray;
Blooming; And
Liquid crystal layer,
Wherein, this blooming and this liquid crystal layer are positioned at the opposite side of this light guide plate.
21. a light-emitting device comprises:
The light raceway groove is formed on the pedestal, comprises:
Upper side;
Downside is with respect to this upper side;
Medial surface forms the angle of different angles respectively with this upper side and this downside;
Exiting surface is positioned at a side of this light raceway groove, has two or more lens on it; And
The first semiconductor light emitting unit is positioned at this light raceway groove, and wherein, this semiconductor light emitting unit emits beam in this light raceway groove towards this exiting surface transmission.
22. light-emitting device as claimed in claim 21, wherein at least a portion of this exiting surface is a curved surface.
23. light-emitting device as claimed in claim 21 also comprises:
The second semiconductor light emitting unit is positioned at this light raceway groove and sends the coloured light that is different from this first semiconductor light emitting unit.
24. light-emitting device as claimed in claim 23, wherein the orientation of these lens is parallel to the orientation of this first semiconductor light emitting unit and this second semiconductor light emitting unit substantially.
25. light-emitting device as claimed in claim 21 wherein has otch on this pedestal.
26. a light-emitting device comprises:
The light raceway groove is formed on the pedestal, comprises:
Upper side;
Downside is with respect to this upper side;
Medial surface forms the angle of different angles respectively with this upper side and this downside;
Two or more exiting surfaces, its two upper side and downside with respect to this light raceway groove have different angle of inclination at least in this exiting surface; And
The semiconductor light emitting unit is positioned at this light raceway groove, and wherein, this semiconductor light emitting unit emits beam in this light raceway groove towards this exiting surface transmission.
27. light-emitting device as claimed in claim 26, wherein in this exiting surface at least one comprise optical texture, this optical texture is selected from by convex lens, concavees lens, and the group that constitutes of matsurface.
28. a liquid crystal indicator comprises:
Liquid crystal layer; And
Light-emitting device comprises:
The light raceway groove is formed on the pedestal, comprises:
Upper side;
Downside is with respect to this upper side;
Medial surface forms the angle of different angles respectively with this upper side and this downside; And
Exiting surface is with respect to this medial surface; And
Luminescence unit is positioned on this medial surface, and wherein, this luminescence unit emits beam in this light raceway groove towards this exiting surface transmission.
29. liquid crystal indicator as claimed in claim 28 also comprises:
Light guide plate is in order to receive from the light of this luminescence unit and to change its direction.
30. liquid crystal indicator as claimed in claim 29 also comprises:
The reflector is in order to reflection ray; And
Blooming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100960881A CN101232064B (en) | 2007-01-26 | 2007-04-13 | Illuminating device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710008122 | 2007-01-26 | ||
| CN200710008122.5 | 2007-01-26 | ||
| CN2007100960881A CN101232064B (en) | 2007-01-26 | 2007-04-13 | Illuminating device |
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| Publication Number | Publication Date |
|---|---|
| CN101232064A CN101232064A (en) | 2008-07-30 |
| CN101232064B true CN101232064B (en) | 2010-07-21 |
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| US8450756B2 (en) * | 2010-06-14 | 2013-05-28 | Micron Technology, Inc. | Multi-dimensional LED array system and associated methods and structures |
| JP2012113919A (en) * | 2010-11-24 | 2012-06-14 | Toshiba Corp | Lighting device |
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