CN100492133C - Light source device with light gathering effect and back light module using the same light source device - Google Patents
Light source device with light gathering effect and back light module using the same light source device Download PDFInfo
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- CN100492133C CN100492133C CNB2007100787178A CN200710078717A CN100492133C CN 100492133 C CN100492133 C CN 100492133C CN B2007100787178 A CNB2007100787178 A CN B2007100787178A CN 200710078717 A CN200710078717 A CN 200710078717A CN 100492133 C CN100492133 C CN 100492133C
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Abstract
The invention discloses a light source device and a backlight module using it. And it comprises lighting component and optical lens, where the optical lens is coated on the lighting component; the lighting component has top lighting surface facing the light incoming side of a light guide component; the optical lens comprises top surface and light collecting side wall surface, where the top surface corresponds to the top lighting surface and is located between the top lighting surface of the lighting component and the light incoming side of the light guide component; the light collecting side wall surface is located on the long side of the optical lens and bends and extends from the edge of the long side of the top surface to the lighting component, and is arranged corresponding to the first advancing direction of the light generated by the lighting component; and the light collecting side wall surface changes the first advancing direction relatively biased into the second advancing direction relatively close to the top surface. And the invention has better light utilization efficiency and more uniform light output effect.
Description
Technical field
The present invention is about a kind of light supply apparatus; Particularly, the backlight module that the invention relates to a kind of light supply apparatus and use this light supply apparatus, the feed flow crystal device uses.
Background technology
The display apparatus of display panel and use display panel becomes the main flow of all kinds of display device gradually.The display screens of flat-plate type monitor, mobile phone and the digital camera of flat-surface television, PC and the kneetop computer of for example various panel display screen, family expenses etc. are the product of a large amount of use display panels.Particularly the market demand of liquid crystal indicator is significantly grown up in recent years, and for the fluid,matching crystal device reaches apparent requirement on function, the employed backlight module design of liquid crystal indicator also becomes more diversified.
With the backlight module of side-light type, its employed light supply apparatus mainly comprises linear light sorurce and pointolite.Linear light sorurce mainly is representative with the lamp tube light source, and pointolite then is representative with the LED source.As shown in Figure 1a, traditional side light type back light module is a side that light-emitting diode (LED) module 13 is arranged at light guide plate 11.The light that light-emitting diode (LED) module 13 sends then via the side of light guide plate 11, is exported by the exiting surface 15 of light guide plate 11 again.
Yet because the slimming trend of panel, the thickness of light guide plate also constantly reduces.In order to increase the service efficiency that produces light, and effectively control light and enter light guide plate, can add optical texture at each light emitting diode periphery usually.Shown in Fig. 1 b, it is arranged at light emitting diode 21 in the cavity 23.The light portion that light emitting diode 21 produces can directly enter light guide plate 11, and other parts are then via entering light guide plate 11 after the reflection of cavity 23 inwalls 25 again.In this structure, the reflectivity of cavity 23 inwalls 25 is very huge to the effectiveness affects that light uses.In addition, this structure can make the angular distribution of light on parallel conductive tabula rasa 11 directions be restricted, and then causes the situation of light guide plate 11 glazed thread skewness.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of light supply apparatus is provided and uses the backlight module of this light supply apparatus, have preferable smooth service efficiency.
Technical solution of the present invention is: a kind of light supply apparatus, and it comprises: a light-emitting component, produce a light, this light-emitting component comprises light-emitting area on; And an optical lens, surrounding this light-emitting component, this optical lens comprises an end face and a light harvesting side wall surface, and this end face should be gone up light-emitting area corresponding to this light-emitting component; This light harvesting side wall surface is positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, wherein this light harvesting side wall surface is provided with one first direct of travel that produces light corresponding to this light-emitting component, and this first direct of travel that changes this light is one second direct of travel, and this first direct of travel should be gone up light-emitting area than what this second direct of travel departed from this end face and this light-emitting component.
The present invention also proposes a kind of backlight module that uses above-mentioned light supply apparatus, and this backlight module also comprises a light-guide device, has a light inlet side; This light supply apparatus, corresponding to this light inlet side of this light-guide device, this light supply apparatus comprises a light-emitting component and an optical lens, and light-emitting component can produce a light, this light-emitting component comprises light-emitting area on, and light-emitting area is towards this light inlet side of this light-guide device on this; This optical lens surrounds this light-emitting component, and this optical lens comprises an end face and a light harvesting side wall surface, and this end face should be gone up light-emitting area corresponding to this light-emitting component, and between between this light inlet side of light-emitting area on this and this light-guide device; This light harvesting side wall surface is positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, wherein this light harvesting side wall surface is provided with one first direct of travel that produces light corresponding to this light-emitting component, and this first direct of travel that changes this light is one second direct of travel, and this first direct of travel should be gone up light-emitting area than what this second direct of travel departed from this end face and this light-emitting component.
Characteristics of the present invention and advantage are: backlight module of the present invention comprises light-guide device and light supply apparatus.Light supply apparatus is provided with the light inlet side corresponding to light-guide device.Light-guide device is to receive the light that light supply apparatus penetrates from the light inlet side, by the structure and the material behavior of light-guide device inside, the light guiding that receives is distributed on the exiting surface of monoblock light-guide device.Light supply apparatus comprises light-emitting component and optical lens, and optical lens is coated on the outside of light-emitting component.Light-emitting component has last light-emitting area; Last light-emitting area is towards the light inlet side of light-guide device.
Optical lens comprises end face and light harvesting side wall surface.End face is corresponding to the last light-emitting area of light-emitting component; In other words, end face is positioned between the light inlet side of the last light-emitting area of light-emitting component and light-guide device.The light harvesting side wall surface is positioned at the long side of optical lens, and extends to the light-emitting component bending from the long limit of end face ora terminalis.The light harvesting side wall surface is provided with first direct of travel that produces light corresponding to light-emitting component, and wherein first direct of travel deviates from the end face of optical lens.Light harvesting side wall surface and first direct of travel that changes light are second direct of travel, make light approach the two normal direction of light-emitting area on end face, the light-emitting component and this.
Preferable refraction part and the total reflection portion of comprising of light harvesting side wall surface.Refraction part is extended from the ora terminalis of end face; Total reflection portion then continues from the root edge of refraction part and extends to light-emitting component.The root edge of refraction part be on the light harvesting side wall surface on parallel on the direction of light-emitting area apart from light-emitting component position farthest.The light that produces when light-emitting component is when first direct of travel arrives at the refraction part of light harvesting side wall surface, refraction part is utilized the angle of its outside surface and is cooperated optical lens and the difference of extraneous refractive index, produces second direct of travel that a refraction effect is refracted as the direct of travel of light close end face.Yet the light that produces when light-emitting component is when first direct of travel arrives at the total reflection portion of light harvesting side wall surface, refraction part is then utilized the angle of its outside surface and is cooperated optical lens and the difference of extraneous refractive index, produces second direct of travel that a total reflection effect is reflected into the direct of travel of light close end face.
Light supply apparatus of the present invention and use the backlight module of this light supply apparatus not only to have preferable smooth service efficiency, and have light output effect uniformly.
Description of drawings
Fig. 1 a and Fig. 1 b are the conventional light source schematic representation of apparatus;
Fig. 2 a is the element exploded view of backlight module embodiment of the present invention;
Fig. 2 b is another embodiment synoptic diagram of light-guide device;
Fig. 3 is the embodiment synoptic diagram of light supply apparatus;
Fig. 4 is a sectional view embodiment illustrated in fig. 3;
Fig. 5 is the synoptic diagram that the refraction part of light harvesting side wall surface changes light going direction:
Fig. 6 is the synoptic diagram that the total reflection portion of light harvesting side wall surface changes light going direction;
Fig. 7 is the synoptic diagram that light harvesting side wall surface angle changes;
Fig. 8 is another embodiment synoptic diagram of light supply apparatus;
Fig. 9 is a sectional view embodiment illustrated in fig. 8;
Figure 10 is the synoptic diagram that middle total reflection portion embodiment illustrated in fig. 9 changes light going direction.
The main element symbol description:
100 backlight modules, 110 light-guide devices, 113 light inlet sides
115 exiting surfaces, 117 depressed parts, 130 light supply apparatuses
131 substrates, 150 reflector plates, 300 light-emitting components
Light-emitting area 311 long limits 313 minor faces on 310
330 sidewalls, 500 optical lenses, 510 end faces
511 long limit 513 minor faces, 530 light harvesting side wall surfaces
531 refraction part, 533 total reflection portions, 535 bottoms
540 root edges, 610 first direct of travels, 620 second direct of travels
710 the first half, 730 the latter halfs, 731 apical margins
733 root edges
Embodiment
The backlight module that the invention provides a kind of light supply apparatus and use this light supply apparatus.With preferred embodiment, this backlight module feed flow crystal device uses.Yet in different embodiment, also can power brain keyboard, mobile phone button, billboard and other of this backlight module need the device of planar light source to use.Furthermore, the present invention more comprises the liquid crystal indicator that uses this light supply apparatus and backlight module.In preferred embodiment, liquid crystal indicator of the present invention comprises a color liquid crystal display arrangement.Yet in different embodiment, liquid-crystal apparatus of the present invention also can comprise monochromatic liquid crystal indicator.In addition, liquid crystal indicator is the display device that general reference is used liquid crystal panel, comprises the LCDs etc. of LCD monitor, mobile phone and digital camera of LCD TV, PC and the kneetop computer of family expenses.
In the embodiment shown in Fig. 2 a, backlight module 100 comprises light-guide device 110 and light supply apparatus 130.Light supply apparatus 130 is provided with corresponding to the light inlet side 113 of light-guide device 110.In preferred embodiment, light-guide device 110 comprises a light guide plate.Shown in Fig. 2 a, light-guide device 110 is to receive the light that light supply apparatus 130 penetrates from light inlet side 113.Utilize the structure and the material behavior of light-guide device 110 inside, the light guiding that receives is distributed on the exiting surface 115 of monoblock light-guide device 110.In addition, the preferable reflector plate 150 that adds in the below of light-guide device 110 enters light-guide device 110 once more with the reflection of the leakage light of light-guide device 110 belows, to promote the service efficiency of light.
Fig. 2 b is depicted as another embodiment of light-guide device 110.In this embodiment, the light inlet side 113 of light-guide device 110 has depressed part 117, and 130 of light supply apparatuses embed in the depressed part 117.Utilize this structure,, improve the utilization factor that light supply apparatus 130 produces light to reduce the ratio of leakage light.Yet light supply apparatus 130 is preferably the internal face maintenance one suitable spacing with depressed part 117, to keep the angle of light refraction, the unlikely influence that produces the material interface because of contact in this embodiment.
As shown in Figure 3, light supply apparatus 130 comprises light-emitting component 300 and optical lens 500, and optical lens 500 is coated on the outside of light-emitting component 300.Light-emitting component 300 has last light-emitting area 310; Last light-emitting area 310 is towards the light inlet side 113 of light-guide device 110.As shown in Figure 3, last light-emitting area 310 is preferably rectangle, and its long limit 311 is parallel to the light inlet side 113 of light-guide device 110.Yet in different embodiment, last light-emitting area 310 also can be square or other shapes.In addition, last light-emitting area 310 viewable design demands and be cambered surface or plane.In this preferred embodiment, light-emitting component 300 comprises light emitting diode (LED) element; Yet in different embodiment, light-emitting component 300 also can be fluorescent tube or other electrification luminous light source.In addition, the light supply apparatus 130 preferable substrates 131 that also comprise.Light-emitting component 300 and optical lens 500 all are arranged on the substrate 131, and light-emitting component 300 can be by being connected with line electricity on the substrate 131 to receive electric power or signal.
As shown in Figure 3, optical lens 500 main last light-emitting area 310 and the sidewalls 330 that surround light-emitting component 300.In other words, light-emitting component 300 all can just can penetrate outside the light supply apparatus 130 through behind the optical lens 500 earlier from the light of last light-emitting area 310 and sidewall 330 ejaculations.As shown in Figures 3 and 4, optical lens 500 comprises end face 510 and light harvesting side wall surface 530.End face 510 is corresponding to the last light-emitting area 310 of light-emitting component 300; In other words, end face 510 is positioned at 113 of the light inlet sides of the last light-emitting area 310 of light-emitting component 300 and light-guide device 110.In preferred embodiment, the distance of end face 510 supreme light-emitting areas 310 is between 5 times to 10 times of light-emitting component 300 own height H.As shown in Figure 3, end face 510 is preferably rectangle; In addition, end face 510 visual actual needs and be cambered surface or plane.The long limit 311 of long the limit 511 preferable and last light-emitting areas 310 of end face 510 is corresponding or parallel, and long limit 511 width of end face 510 are preferably between 4 times to 7 times of long limit 311 width of light-emitting area 310.In addition, as shown in Figure 4, the preferable twice that is similar to end face 510 minor faces 513 width of minor face 313 width of last light-emitting area 310; Yet in different embodiment, minor face 313 width of last light-emitting area 310 also can be greater than or less than the width of end face 510 minor faces 513.Optical lens 500 employed materials for example are the epoxy resin (Epoxy) of optical grade.
As shown in Figures 3 and 4, light harvesting side wall surface 530 is positioned at the long side of optical lens 500, and extends to light-emitting component 300 bendings from the long limit of end face 510 511 ora terminalis.So-called herein crooked the extension is that expression light harvesting side wall surface 530 is at end face 510 and 30 whole arc surfaces that form of light-emitting component.The 530 preferable paired settings of light harvesting side wall surface, that is be formed at two long sides of end face 510 respectively.In the embodiment shown in fig. 4, light harvesting side wall surface 530 forms outer convex surface jointly with end face 510; Yet in different embodiment, light harvesting side wall surface 530 also can be an inner concave.In addition, light harvesting side wall surface 530 is preferably smooth continuous curve surface; Yet in different embodiment, light harvesting side wall surface 530 also can be served as reasons, and several press from both sides the surface of discontinuity of the plane common combination of an angle of intersection each other.
As shown in Figure 5, light harvesting side wall surface 530 is first direct of travel, 610 settings that produce light corresponding to light-emitting component 300, and wherein first direct of travel 610 deviates from the end face 510 of optical lens.First direct of travel 610 that light harvesting side wall surface 530 changes light is second direct of travel 620, makes light approach the two normal direction of light-emitting area 310 on end face 510, the light-emitting component 300 and this.
As shown in Figure 5, light harvesting side wall surface 530 comprises refraction part 531 and total reflection portion 533.Refraction part 531 is than the part near end face 510, and extends from the ora terminalis of end face 510.533 in total reflection portion is than the part near light-emitting component 300, and continues to light-emitting component 300 extensions from the root edge 540 of refraction part 531.The root edge 540 of refraction part 531, that is the place that continues of refraction part 531 and total reflection portion 533, on the light harvesting side wall surface 530 on parallel on the direction of light-emitting area 310 apart from light-emitting component 300 position farthest.In other words, extend the plane if do one with the sidewall 330 of light-emitting component 300, the root edge 540 of refraction part 531 is that this extends the plane part of evagination the most relatively on the light harvesting side wall surface 530.
As shown in Figure 5, the light that produces when light-emitting component 300 is when first direct of travel 610 arrives at the refraction part 531 of light harvesting side wall surface 530, refraction part 531 is utilized the angle of its outside surface and is cooperated the difference of optical lens 500 and extraneous refractive index, produces second direct of travel 620 that a refraction effect is refracted as the direct of travel of light close end face 510.Yet Fig. 6 embodiment in, the light that produces when light-emitting component 300 is when first direct of travel 610 arrives at the total reflection portion 533 of light harvesting side wall surface 530,531 of refraction part are utilized the angle of its outside surface and are cooperated the difference of optical lens 500 and extraneous refractive index, produce second direct of travel 620 that a total reflection effect is reflected into the direct of travel of light close end face 510.
With preferred embodiment, the profile line of refraction part 531 and total reflection portion 533 can be distinguished following array function analog computation on the light harvesting side wall surface 530:
P(t)＝((1-t)
2P
0+2t(1-t)w
1P
1+t
2P
2)/((1-t)
2+2t(1-t)w
1+t
2)
Wherein: P
0Be the profile line starting point coordinate
P
2Be the profile line terminal point coordinate
P
1For the profile line stage casing with reference to the trigpoint coordinate
w
1It is a curvature parameters; When calculating refraction part 531, w
1≈ 2; When calculating total reflection portion 533, w
1≈ 1
0<t<1
As Fig. 5 and shown in Figure 6, the length profile of refraction part 531 is longer than the length profile of total reflection portion 533.The mean curvature of refraction part 531 is preferable also greater than the mean curvature of total reflection portion 533.In addition, as shown in Figure 7, for reaching preferable broken line effect, the line of end face 510 ora terminalis and refraction part 531 root edges 540 and the angle theta of last light-emitting area 310 normals
1Be preferably between 30 degree between 60 degree.For reaching preferable total reflection effect, the angle theta of the line of any point and refraction part 531 root edges 540 and last light-emitting area 310 normals on the last light-emitting area 310
2Between 40 degree are spent to 70.
Extremely shown in Figure 7 as Fig. 4, the light harvesting side wall surface 530 preferable bottoms 535 that comprise.Bottom 535 is that the root edge from total reflection portion 533 extends, and is positioned at long limit 311 sides of light-emitting component 300.The bottom 535 main sidewalls 330 that coat light-emitting component 300, and be connected to substrate 131.To shown in Figure 7, see it with the reference planes at 535 places, bottom as benchmark as Fig. 4, the root edge 540 of refraction part 531 protrudes in outside the bottom 535.With preferred embodiment, the bottom 535 rough height with light-emitting component 300 of light harvesting side wall surface 530 equate.Yet in different embodiment, light harvesting side wall surface 530 also can not be provided with bottom 535, and is directly coated the sidewall 330 of light-emitting component 300 by total reflection portion 533.
Fig. 8 and Figure 9 shows that another embodiment of light supply apparatus of the present invention.In this embodiment, light harvesting side wall surface 530 forms inner concave, is from the ora terminalis of end face 510 downwards and extend internally.Light harvesting side wall surface 530 presss from both sides an acute angle theta with the end face 510 of optical lens 500
3Light harvesting side wall surface 530 and end face 510 angle theta
3Scope be preferably between 50 the degree to 70 the degree between.As shown in Figure 9, light harvesting side wall surface 530 mainly comprises total reflection portion 533 and bottom 535.Total reflection portion 533 is near the part of end face 510, and the inner concave arc surface that extends internally downwards for the ora terminalis from end face 510.In addition, the apical margin of total reflection portion 533 and end face 510 ora terminalis joints be on the light harvesting side wall surface 530 on parallel on the direction of light-emitting area 310 apart from light-emitting component 300 position farthest.In other words, extend the plane if do one with the sidewall 330 of light-emitting component 300, the apical margin of total reflection portion 533 is that this extends the plane part of evagination the most relatively on the light harvesting side wall surface 530.
As Fig. 8 and shown in Figure 9, bottom 535 is that the root edge from total reflection portion 533 extends, and is positioned at long limit 311 sides of light-emitting component 300.Bottom 535 mainly is the sidewall 330 that coats light-emitting component 300, and is connected to substrate 131.With preferred embodiment, the bottom 535 rough height H with light-emitting component 300 of light harvesting side wall surface 530 equate; Preferable 4 times of then being light harvesting side wall surface 530 bottoms 535 of minor face 513 width of optical lens 500 end faces 510 to light-emitting component 300 center position.In addition, in different embodiment, light harvesting side wall surface 530 also can not be provided with bottom 535, and is directly coated the sidewall 330 of light-emitting component 300 by total reflection portion 533.
In the embodiment shown in fig. 9, total reflection portion 533 can be divided into the first half 710 and the latter half 730.The first half 710 approaches end face 510, and the latter half 730 approaches light-emitting component 300.The preferable mean curvature greater than the latter half of the mean curvature of the first half 710 wherein is to provide preferable light reflection efficiency.In addition, the first half 710 apical margins 731 of total reflection portion 533 press from both sides an angle θ in the projection of light-emitting component 300 sidewalls 330 extended surfaces and the line of the latter half 730 root edges 733 and the extended surface of sidewall 330
4, θ
4Be preferably between 5 degree between 30 degree.
The first half 710 of total reflection portion 533 and the profile line of the latter half 730 can be distinguished following array function analog computation:
P(t)＝((1-t)
2P
0+2t(1-t)w
1P
1+t
2P
2)/((1-t)
2+2t(1-t)w
1+t
2)
Wherein: P
0Be the profile line starting point coordinate
P
2Be the profile line terminal point coordinate
P
1For the profile line stage casing with reference to the trigpoint coordinate
w
1It is a curvature parameters; When calculating the first half 710, w
1≈ 10: when calculating the latter half 730, and w
1≈ 0.2
0<t<1
As shown in figure 10, the light that produces when light-emitting component 300 is when first direct of travel 610 arrives at the total reflection portion 533 of light harvesting side wall surface 530, total reflection portion 533 utilizes the angle of its outside surface and cooperates the difference of optical lens 500 and extraneous refractive index, produces a total reflection effect direct of travel of light is reflected into second direct of travel 620 towards end face 510.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, being contained in the modification of the spirit of claim and scope and equalization is provided with and all is contained in the scope of the present invention.
Claims (36)
1. a light supply apparatus is characterized in that, comprises:
One light-emitting component produces a light, and this light-emitting component comprises light-emitting area on; And
One optical lens surrounds this light-emitting component, and this optical lens comprises:
One end face, corresponding to the upward light-emitting area of this light-emitting component, and an aforementioned bond length that goes up a bond length of light-emitting area greater than this end face; And
One light harvesting side wall surface, be positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, the common outer convex surface that forms of this light harvesting side wall surface and this end face, and this light harvesting side wall surface comprises a refraction part and a total reflection portion, this refraction part is that the ora terminalis from this end face extends, and being root edge from this refraction part, this total reflection portion extends, wherein the root edge of this refraction part be on this light harvesting side wall surface parallel should on the direction of light-emitting area apart from this light-emitting component position farthest, and the line of this end face ora terminalis and this refraction part root edge and this are gone up the angle of light-emitting area normal between 30 degree are spent to 60, the refraction part of this light harvesting side wall surface will be one second direct of travel corresponding to one first going direction changing of this light-emitting component generation light, and this first direct of travel departs from the last light-emitting area of this end face and this light-emitting component than this second direct of travel.
2. light supply apparatus as claimed in claim 1 is characterized in that, this bond length of light-emitting area is similar to the twice of this bond length of this end face on this.
3. light supply apparatus as claimed in claim 1 is characterized in that, this end face to the distance that should go up light-emitting area between between 5 times to 10 times of this light-emitting component height.
4. light supply apparatus as claimed in claim 1 is characterized in that the mean curvature of this refraction part is greater than the mean curvature of this total reflection portion.
5. light supply apparatus as claimed in claim 1 is characterized in that, on this on light-emitting area the line of any point and this refraction part root edge and the angle that should go up the light-emitting area normal between 40 degree between 70 degree.
6. light supply apparatus as claimed in claim 1 is characterized in that, this light harvesting side wall surface comprises a bottom, and this bottom is that the root edge from this total reflection portion extends, and is positioned at the long side of this light-emitting component, and the root edge of this refraction part protrudes in outside this bottom.
7. light supply apparatus as claimed in claim 6 is characterized in that, this bottom of this light harvesting side wall surface is rough contour with this light-emitting component.
8. light supply apparatus as claimed in claim 1 is characterized in that, the long edge lengths of this end face of this optical lens is between between 4 times to 7 times of the long edge lengths of this light-emitting component.
9. backlight module comprises:
One light-guide device has a light inlet side; And
One light supply apparatus, corresponding to this light inlet side of this light-guide device, this light supply apparatus comprises:
One light-emitting component produces a light, and this light-emitting component comprises light-emitting area on, and light-emitting area is towards this light inlet side of this light-guide device on this; And
One optical lens surrounds this light-emitting component, and this optical lens comprises:
One end face, corresponding to the upward light-emitting area of this light-emitting component, and between between this light inlet side of light-emitting area on this and this light-guide device, and an aforementioned bond length that goes up a bond length of light-emitting area greater than this end face; And
One light harvesting side wall surface, be positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, the common outer convex surface that forms of this light harvesting side wall surface and this end face, and this light harvesting side wall surface comprises a refraction part and a total reflection portion, this refraction part is that the ora terminalis from this end face extends, and being root edge from this refraction part, this total reflection portion extends, wherein the root edge of this refraction part be on this light harvesting side wall surface parallel should on the direction of light-emitting area apart from this light-emitting component position farthest, and the line of this end face ora terminalis and this refraction part root edge and this are gone up the angle of light-emitting area normal between 30 degree are spent to 60, wherein the refraction part of this light harvesting side wall surface will be one second direct of travel corresponding to one first going direction changing of this light-emitting component generation light, and this first direct of travel departs from the upward light-emitting area of this end face and this light-emitting component than this second direct of travel.
10. backlight module as claimed in claim 9 is characterized in that, this light inlet side of this light-guide device has a depressed part, and this light supply apparatus embeds this depressed part.
11. backlight module as claimed in claim 9 is characterized in that, this bond length of light-emitting area is similar to the twice of this bond length of this end face on this.
12. backlight module as claimed in claim 9 is characterized in that, this end face to the distance that should go up light-emitting area between between 5 times to 10 times of this light-emitting component height.
13. backlight module as claimed in claim 9 is characterized in that, the mean curvature of this refraction part is greater than the mean curvature of this total reflection portion.
14. backlight module as claimed in claim 9 is characterized in that, on this on light-emitting area the line of any point and this refraction part root edge and the angle that should go up the light-emitting area normal between 40 degree between 70 degree.
15. backlight module as claimed in claim 9 is characterized in that, this light harvesting side wall surface comprises a bottom, and this bottom is that the root edge from this total reflection portion extends, and is positioned at the long side of this light-emitting component, and the root edge of this refraction part protrudes in outside this bottom.
16. backlight module as claimed in claim 15 is characterized in that, this bottom of this light harvesting side wall surface is rough contour with this light-emitting component.
17. backlight module as claimed in claim 9 is characterized in that, the long edge lengths of this end face of this optical lens is between between 4 times to 7 times of the long edge lengths of this light-emitting component.
18. a light supply apparatus, wherein, this light supply apparatus comprises:
One light-emitting component produces a light, and this light-emitting component comprises light-emitting area on; And
One optical lens surrounds this light-emitting component, and this optical lens comprises:
One end face is corresponding to the upward light-emitting area of this light-emitting component; And
One light harvesting side wall surface, be positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, this light harvesting side wall surface forms an inner concave, and press from both sides an acute angle with this end face, this light harvesting side wall surface comprises a total reflection portion and a bottom, this total reflection portion is that the ora terminalis from this end face extends, and being root edge from this total reflection portion, this bottom extends, and be positioned at the long side of this light-emitting component, wherein the apical margin of this total reflection portion be on this light harvesting side wall surface parallel should on the direction of light-emitting area apart from this light-emitting component position farthest, this light harvesting side wall surface is provided with one first direct of travel that produces light corresponding to this light-emitting component, and this first direct of travel that changes this light is one second direct of travel, and this first direct of travel departs from the last light-emitting area of this end face and this light-emitting component than this second direct of travel.
19. light supply apparatus as claimed in claim 18 is characterized in that, bond length of light-emitting area is similar to half of a bond length of this end face on this.
20. light supply apparatus as claimed in claim 18 is characterized in that, this end face to the distance that should go up light-emitting area between between 5 times to 10 times of this light-emitting component height.
21. light supply apparatus as claimed in claim 18 is characterized in that, this light harvesting side wall surface and the folded acute angle of this drift angle are between 50 degree are spent to 70.
22. light supply apparatus as claimed in claim 18 is characterized in that, this bottom of this light harvesting side wall surface is rough contour with this light-emitting component.
23. light supply apparatus as claimed in claim 18 is characterized in that, the bond length of end face is that this bottom of this light harvesting side wall surface is to 4 times of this light-emitting component center position.
24. light supply apparatus as claimed in claim 18 is characterized in that, this total reflection portion comprises a first half and second part, and the mean curvature of this first half is greater than the mean curvature of this latter half.
25. light supply apparatus as claimed in claim 24 is characterized in that, this latter half apical margin presss from both sides an angle in the projection of a sidewall extended surface of this light-emitting component and line and this sidewall extended surface of this latter half root edge, and this angle is between 5 degree are spent to 30.
26. light supply apparatus as claimed in claim 18 is characterized in that, the long edge lengths of this end face of this optical lens is between between 4 times to 7 times of the long edge lengths of this light-emitting component.
27. a backlight module, wherein, this backlight module comprises:
One light-guide device has a light inlet side; And
One light supply apparatus, corresponding to this light inlet side of this light-guide device, this light supply apparatus comprises:
One light-emitting component produces a light, and this light-emitting component comprises light-emitting area on, and light-emitting area is towards this light inlet side of this light-guide device on this; And
One optical lens surrounds this light-emitting component, and this optical lens comprises:
One end face, corresponding to the upward light-emitting area of this light-emitting component, and between between this light inlet side of light-emitting area on this and this light-guide device; And
One light harvesting side wall surface, be positioned at a long side of this optical lens, and one of this end face long limit ora terminalis is to the crooked extension of this light-emitting component certainly, this light harvesting side wall surface is to form an inner concave, and press from both sides an acute angle with this end face, this light harvesting side wall surface comprises a total reflection portion and a bottom, this total reflection portion is that the ora terminalis from this end face extends, and being root edge from this total reflection portion, this bottom extends, and be positioned at the long side of this light-emitting component, wherein the apical margin of this total reflection portion be on this light harvesting side wall surface parallel should on the direction of light-emitting area apart from this light-emitting component position farthest, wherein this light harvesting side wall surface is provided with one first direct of travel that produces light corresponding to this light-emitting component, and this first direct of travel that changes this light is one second direct of travel, and this first direct of travel should be gone up light-emitting area than what this second direct of travel departed from this end face and this light-emitting component.
28. backlight module as claimed in claim 27 is characterized in that, this light inlet side of this light-guide device has a depressed part, and this light supply apparatus embeds this depressed part.
29. backlight module as claimed in claim 27 is characterized in that, bond length of light-emitting area is similar to half of a bond length of this end face on this.
30. backlight module as claimed in claim 27 is characterized in that, this end face to the distance that should go up light-emitting area between between 5 times to 10 times of this light-emitting component height.
31. backlight module as claimed in claim 27 is characterized in that, this light harvesting side wall surface and the folded acute angle of this drift angle are between 50 degree are spent to 70.
32. backlight module as claimed in claim 27 is characterized in that, this bottom of this light harvesting side wall surface is rough contour with this light-emitting component.
33. backlight module as claimed in claim 27 is characterized in that, the bond length of this end face is that this bottom of this light harvesting side wall surface is to 4 times of this light-emitting component center position.
34. backlight module as claimed in claim 27 is characterized in that, this total reflection portion comprises a first half and second part, and the mean curvature of this first half is greater than the mean curvature of this latter half.
35. backlight module as claimed in claim 34 is characterized in that, this latter half apical margin presss from both sides an angle in the projection of a sidewall extended surface of this light-emitting component and line and this sidewall extended surface of this latter half root edge, and this angle is between 5 degree are spent to 30.
36. backlight module as claimed in claim 27 is characterized in that, the long edge lengths of this end face of this optical lens is between between 4 times to 7 times of the long edge lengths of this light-emitting component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100787178A CN100492133C (en) | 2007-02-25 | 2007-02-25 | Light source device with light gathering effect and back light module using the same light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100787178A CN100492133C (en) | 2007-02-25 | 2007-02-25 | Light source device with light gathering effect and back light module using the same light source device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021651A CN101021651A (en) | 2007-08-22 |
| CN100492133C true CN100492133C (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100787178A Expired - Fee Related CN100492133C (en) | 2007-02-25 | 2007-02-25 | Light source device with light gathering effect and back light module using the same light source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100492133C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109106A (en) * | 2009-12-23 | 2011-06-29 | 富准精密工业(深圳)有限公司 | LED lamp |
| CN103363335A (en) * | 2012-04-05 | 2013-10-23 | 东莞万士达液晶显示器有限公司 | Luminescence device |
| CN110568666A (en) * | 2019-09-12 | 2019-12-13 | 青岛海信电器股份有限公司 | Display device and backlight module |
| CN114624809B (en) * | 2022-03-28 | 2024-03-12 | 厦门天马微电子有限公司 | Backlight module and display device |
-
2007
- 2007-02-25 CN CNB2007100787178A patent/CN100492133C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101021651A (en) | 2007-08-22 |
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