CN101515068B - Light evener and backlight module comprising same - Google Patents
Light evener and backlight module comprising same Download PDFInfo
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- CN101515068B CN101515068B CN2008100059758A CN200810005975A CN101515068B CN 101515068 B CN101515068 B CN 101515068B CN 2008100059758 A CN2008100059758 A CN 2008100059758A CN 200810005975 A CN200810005975 A CN 200810005975A CN 101515068 B CN101515068 B CN 101515068B
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Abstract
The invention relates to a light evener and a backlight module comprising the same, wherein the backlight module comprises a plurality of the light eveners and a diffusion layer; the light eveners are arrayed on a plane in an array mode; each light evener comprises a light evening plate and at least one luminous source; the light evening plate is provided with an upper surface, a lower surface and at least one pit; the pit is open on the upper surface and provided with a peripheral part, a central part and a side wall; and the side wall extends downwards from the peripheral part to the central part. The luminous source is positioned below the lower surface of the light evening plate and opposite to the pit, and the diffusion layer is positioned above the light eveners. Thus, the backlight module has simple process, low manufacturing cost and simple and convenient maintenance; moreover, the particular design of the light eveners can improve the mixed light efficiency and the illumination.
Description
Technical field
The present invention relates to a kind of light uniforming device and the backlight module that comprises said light uniforming device, particularly a kind of modular light uniforming device and the backlight module that comprises said light uniforming device.
Background technology
With reference to figure 1, the conventional backlight module that displaying U.S. Pat 2005/0259195A1 is disclosed is in the schematic top plan view of ignoring under the situation of diffusion layer.With reference to figure 2, the cross-sectional schematic of exploded view 1.Conventional backlight module comprises diffusion layer (Diffuser) (not shown), reflecting plate (Reflector) 10 and a plurality of leaded light pieces (Packaged Light Guide Block) 20.
Said leaded light piece 20 is arranged and is installed on the said reflecting plate 10 with array way, and said leaded light piece 20 has appropriate intervals to each other.Each said leaded light piece 20 comprises leaded light main body 21, accommodation space 22 and four LED 23,24,25,26.The material of said leaded light main body 21 is the acrylate resins that can supply light penetration, and said leaded light main body 21 for cylindrical toroidal forms within it said accommodation space 22.Said accommodation space 22 is air layers, its ccontaining said LED 23,24,25,26.Said LED 23 is red-light LEDs, in order to send ruddiness; Said LED 24 is green light LEDs, in order to send green glow; Said LED 25 is green light LEDs, in order to send green glow; Said LED 26 is blue-ray LEDs, in order to send blue light.
Through said structure, can being mixed into white light in the air layer of said accommodation space 22 after, outwards launches the light that said LED 23,24,25,26 is sent.Yet since said LED 23,24,25,26th, natural mixed light in air, so mixed light efficient is not high, and the whole thickness of said conventional backlight module can't effectively be reduced; In addition, the quantity of the LED that said conventional backlight module is required can't effectively reduce, and not only power consumption but also manufacturing cost can't effectively reduce for they.
Therefore, be necessary to provide the light uniforming device and the backlight module that comprises said light uniforming device of a kind of innovation and rich progressive, to address the above problem.
Summary of the invention
The purpose of this invention is to provide a kind of light uniforming device, it comprises even tabula rasa and at least one light emitting source.Said even tabula rasa has upper surface, lower surface and at least one pothole, and said pothole is opened on said upper surface, and said pothole has periphery, core and sidewall, and said sidewall extends downwardly into said core by said periphery.Said light emitting source is positioned at the below of said even tabula rasa lower surface and relative with said pothole.
By the backlight module that said modular light uniforming device constitutes, it does not need a sheet of traditionally LGP, so it is easily manufactured, technology is simple, low cost of manufacture and keep in repair easy.And the particular design of said light uniforming device can improve its mixed light efficient and brightness; And the area that makes said even tabula rasa reaches 50mm * 50mm; Even, can reduce the quantity of said light uniforming device in the said like this backlight module, and then reduce the quantity of said light emitting source up to 120mm * 120mm.
Description of drawings
Fig. 1 shows that conventional backlight module that U.S. Pat 2005/0259195A1 disclosed is in the schematic top plan view of ignoring under the situation of diffusion layer;
The cross-sectional schematic of Fig. 2 displayed map 1;
Fig. 3 shows the cross-sectional schematic of the backlight module of first embodiment of the invention;
Fig. 4 shows that the backlight module of first embodiment of the invention is in the schematic top plan view of ignoring under the situation of diffusion layer;
Fig. 5 shows the cross-sectional schematic of the light uniforming device of first embodiment of the invention;
Fig. 6 shows the cross-sectional schematic of the light uniforming device of second embodiment of the invention;
Fig. 7 shows the cross-sectional schematic of the light uniforming device of third embodiment of the invention;
Fig. 8 shows the cross-sectional schematic of the light uniforming device of fourth embodiment of the invention;
Fig. 9 shows the schematic top plan view of the light uniforming device of fifth embodiment of the invention;
Figure 10 shows the schematic top plan view of the light uniforming device of sixth embodiment of the invention;
Figure 11 shows the schematic top plan view of the light uniforming device of seventh embodiment of the invention;
Figure 12 shows the schematic top plan view of the light uniforming device of eighth embodiment of the invention;
Figure 13 shows the schematic top plan view of the light uniforming device of nineth embodiment of the invention;
Figure 14 shows the schematic top plan view of the light uniforming device of tenth embodiment of the invention;
Figure 15 shows the schematic top plan view of the light uniforming device of eleventh embodiment of the invention;
Figure 16 shows the schematic top plan view of the light uniforming device of twelveth embodiment of the invention;
Figure 17 shows the schematic top plan view of the light uniforming device of thriteenth embodiment of the invention;
Figure 18 shows the schematic top plan view of the light uniforming device of fourteenth embodiment of the invention;
Figure 19 shows the schematic top plan view of the light uniforming device of fifteenth embodiment of the invention;
Figure 20 shows the schematic top plan view of the light uniforming device of sixteenth embodiment of the invention;
Figure 21 shows the schematic top plan view of the light uniforming device of seventeenth embodiment of the invention;
Figure 22 shows the schematic top plan view of the light uniforming device of eighteenth embodiment of the invention; And
Figure 23 A shows the schematic top plan view of the light uniforming device of nineteenth embodiment of the invention;
Among Figure 23 B displayed map 23A along the cross-sectional schematic of line 23B-23B;
Figure 24 A shows the schematic top plan view of the light uniforming device of twentieth embodiment of the invention;
Among Figure 24 B displayed map 24A along the cross-sectional schematic of line 24B-24B;
Figure 25 A shows the schematic top plan view of the light uniforming device of 21st embodiment of the invention;
Among Figure 25 B displayed map 25A along the cross-sectional schematic of line 25B-25B;
Figure 26 A shows the schematic top plan view of the light uniforming device of 22nd embodiment of the invention; And
Among Figure 26 B displayed map 26A along the cross-sectional schematic of line 26B-26B.
Embodiment
With reference to figure 3, show the cross-sectional schematic of the backlight module of first embodiment of the invention.With reference to figure 4, the backlight module of showing first embodiment of the invention is in the schematic top plan view of ignoring under the situation of diffusion layer.Said backlight module 3 comprises a plurality of light uniforming device 4, diffusion layer (Diffuser) 31 and perisphere 32.Said light uniforming device 4 is arranged and is right after on a plane with array way.Said diffusion layer 31 is positioned at the top of said light uniforming device 4.Preferably, have suitable distance between said light uniforming device 4 and the said diffusion layer 31, and be pasted with multi-layer optical film (not shown) on the said diffusion layer 31, to increase optical effect.Said perisphere 32 coats and is positioned at peripheral said light uniforming device 4, and said perisphere 32 is total reflection layers, in order to carry out mixed light in the said light uniforming device 4 of light reflected back that said light uniforming device 4 is sent, prevents leakage of light.
Please show the cross-sectional schematic of the light uniforming device of first embodiment of the invention simultaneously with reference to figure 5.Said light uniforming device 4 comprises even tabula rasa (Uniformity Light Guide) 41 and at least one light emitting source.Said even tabula rasa 41 has upper surface 411, lower surface 412 and at least one pothole 42; Said pothole 42 is opened on said upper surface 411; Said pothole 42 has periphery 421, core 422 and sidewall 423, and said sidewall 423 extends downwardly into said core 422 by said periphery 421.
In the present embodiment, the material of said even tabula rasa 41 is selected from the group that is made up of polymethylmethacrylate (PMMA), polycarbonate (PC), cyclic olefin polymer (COC), polystyrene (PS), glass and composition thereof.Preferably, said even tabula rasa 41 is LGPs, and it is the tetrahedral structure with homogeneous thickness, and its upper surface 411 all is plane and parallel with lower surface 412.The periphery surface of said even tabula rasa 41 comprises four faces.It is understandable that said even tabula rasa 41 also can be other polygons such as triangle or pentagon by overlooking.
Said light emitting source is positioned at the below of said even tabula rasa 41 lower surfaces 412 and relative with said pothole 42.In the present embodiment, the even tabula rasa 41 of said light uniforming device 4 has four potholes 42, and said light emitting source is four flat LED45,46,47,48 (Fig. 4), each LED be positioned at a pothole 42 under.Said LED 45,46,47,48 is positioned on the substrate 49.Said LED 45 is green light LEDs, in order to send green glow; Said LED 46 is blue-ray LEDs, in order to send blue light; Said LED 47 is red-light LEDs, in order to send ruddiness; Said LED 48 is green light LEDs, in order to send green glow.Yet in other was used, the quantity of said LED and said pothole 42 can be more than three or five.
Therefore in the present embodiment, the sidewall 423 of said pothole 42 is coniform external form, and the periphery 421 of said pothole 42 also is that the core 422 of circular and said pothole 42 is central points by overlooking.In other words, to be two side lines intersect at said core 422 by said periphery 421 to extending below to the section of the sidewall 423 of said pothole 42, and wherein each side line is a curve.Said sidewall 423 is parallel with said upper surface 411 or lower surface 412 in order to being reflected into horizontal direction from the light that said light emitting source (is example with LED 46) sent, and whereby, can increase the mixed light effect.
In the present embodiment, the lower surface 412 of said even tabula rasa 41 has microstructure 413.Said microstructure 413 is that periodicity or acyclic repeatability height rise and fall, and spreads the light in the said even tabula rasa 41 in order to refraction, to increase the mixed light effect.The pattern of said microstructure 413 includes but not limited to that many are arranged in parallel or groove or ridge intersected with each other, and the profile of said groove or ridge is circular arc, square, trapezoidal, triangle or other profile.In other was used, the lower surface 412 of said even tabula rasa 41 had printed patterns, and said printed patterns can have and said microstructure 413 identical functions.In addition, the upper surface 411 of said even tabula rasa 41 also can have said microstructure 413.
Preferably, said light uniforming device 4 comprises reflection horizon 43 down in addition, is positioned at the lower surface 412 of said even tabula rasa 41, reflexes in the said even tabula rasa 41 in order to the light that said LED 45,46,47,48 is sent and carries out mixed light.
With reference to figure 4, the arrangement mode of the LED in the present embodiment is following, light uniforming device 4A wherein, and 4B, 4C is identical with the structure of light uniforming device 4, and the arrangement mode that only is the LED in it of not existing together is different.In said light uniforming device 4, LED 45 is green light LEDs, and LED 46 is blue-ray LEDs, and said LED 47 is red-light LEDs, and LED 48 is green light LEDs.In said light uniforming device 4A, LED 45A is a green light LED, and LED 46A is a red-light LED, and said LED 47A is a blue-ray LED, and LED 48A is a green light LED.The arrangement mode of the LED of said light uniforming device 4B is identical with said light uniforming device 4A.The arrangement mode of the LED of said light uniforming device 4C is identical with said light uniforming device 4.The arrangement mode of the LED of other light uniforming device order is according to this analogized, and for instance, light uniforming device 4D is identical with said light uniforming device 4, and light uniforming device 4E is identical with said light uniforming device 4B.
Said backlight module 3 is owing to be that said modular light uniforming device constitutes, and do not need a sheet of traditionally LGP, so it is easily manufactured, technology is than simply and low cost of manufacture.In addition, because modular design, said backlight module 3 is also comparatively easy in maintenance.And, because the particular design of light uniforming device of the present invention can improve its mixed light efficient and brightness; And the area that makes said even tabula rasa 41 reaches 50mm * 50mm; Even, can reduce the quantity of said light uniforming device in the said like this backlight module 3, and then reduce the quantity of LED up to 120mm * 120mm.
With reference to figure 6, show the cross-sectional schematic of the light uniforming device of second embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5A of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5A of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are that in the present embodiment, two side lines of the section of the sidewall 423 of said pothole 42 are straight lines.
With reference to figure 7, show the cross-sectional schematic of the light uniforming device of third embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5B of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5B of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are that in the present embodiment, the side line of the section of the sidewall 423 of said pothole 42 comprises two line segments 4231,4232, and the slope of said two line segments 4231,4232 is inequality.
With reference to figure 8, show the cross-sectional schematic of the light uniforming device of fourth embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5C of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5C of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are that in the present embodiment, said pothole 42 comprises accommodation space 424 in addition, is positioned at the periphery 421 of said pothole 42, in order to ccontaining reflector plate 44.
With reference to figure 9, show the cross-sectional schematic of the light uniforming device of fifth embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5D of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5D of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are; In the present embodiment; Wherein said even tabula rasa 41 has at least one hole, the end 50 in addition, and hole, the said end 50 is positioned at the below of said pothole 42, and is opened on the lower surface 412 of said even tabula rasa 41.Hole, the said end 50 is cylindric external form.Said light emitting source (for example said LED 46) is positioned at outside the hole, the said end 50.
With reference to Figure 10, show the cross-sectional schematic of the light uniforming device of sixth embodiment of the invention.The light uniforming device 5D (Fig. 9) of the light uniforming device 5E of present embodiment and said the 5th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5E of present embodiment and not existing together of the light uniforming device 5D of said the 5th embodiment only are that in the present embodiment, hole, the said end 50 has roof 51 and sidewall 52, and said roof 51 is recessed curved surfaces.
With reference to Figure 11, show the cross-sectional schematic of the light uniforming device of seventh embodiment of the invention.The light uniforming device 5E (Figure 10) of the light uniforming device 5F of present embodiment and said the 6th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5F of present embodiment and not existing together of the light uniforming device 5E of said the 6th embodiment only are that in the present embodiment, the minimum point of the roof 51 in hole, the said end 50 trims the lower surface 412 of said even tabula rasa 41.
With reference to Figure 12, show the cross-sectional schematic of the light uniforming device of eighth embodiment of the invention.The light uniforming device 5D (Fig. 9) of the light uniforming device 5G of present embodiment and said the 5th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5G of present embodiment and not existing together of the light uniforming device 5D of said the 5th embodiment only are that in the present embodiment, hole, the said end 50 is the spherical external form of semicircle.
With reference to Figure 13, show the cross-sectional schematic of the light uniforming device of nineth embodiment of the invention.The light uniforming device 5D (Fig. 9) of the light uniforming device 5H of present embodiment and said the 5th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5H of present embodiment and not existing together of the light uniforming device 5D of said the 5th embodiment only are that in the present embodiment, hole, the said end 50 is a semielliptical shape external form.
With reference to Figure 14, show the cross-sectional schematic of the light uniforming device of tenth embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5I of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5I of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are that in the present embodiment, the side line of the section of the sidewall 423 of said pothole 42 comprises straight lines 4234 and curved segments 4233.
With reference to Figure 15, show the cross-sectional schematic of the light uniforming device of eleventh embodiment of the invention.The light uniforming device 5F (Figure 11) of the light uniforming device 5J of present embodiment and said the 7th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5J of present embodiment and not existing together of the light uniforming device 5F of said the 7th embodiment only are that in the present embodiment, the section of the sidewall 423 of said pothole 42 is straight lines.
With reference to Figure 16, show the cross-sectional schematic of the light uniforming device of twelveth embodiment of the invention.The light uniforming device 5E (Figure 10) of the light uniforming device 5K of present embodiment and said the 6th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5K of present embodiment and not existing together of the light uniforming device 5E of said the 6th embodiment only are that in the present embodiment, the section of the sidewall 423 of said pothole 42 is straight lines.
With reference to Figure 17, show the cross-sectional schematic of the light uniforming device of thriteenth embodiment of the invention.The light uniforming device 5G (Figure 12) of the light uniforming device 5L of present embodiment and said the 8th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5G of present embodiment and not existing together of the light uniforming device 5G of said the 8th embodiment only are that in the present embodiment, the section of the sidewall 423 of said pothole 42 is straight lines.
With reference to Figure 18, show the cross-sectional schematic of the light uniforming device of fourteenth embodiment of the invention.The light uniforming device 5D (Fig. 9) of the light uniforming device 5M of present embodiment and said the 5th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5M of present embodiment and not existing together of the light uniforming device 5D of said the 5th embodiment only are that in the present embodiment, the section of the sidewall 423 of said pothole 42 is straight lines.
With reference to Figure 19, show the cross-sectional schematic of the light uniforming device of fifteenth embodiment of the invention.The light uniforming device 5C (Fig. 8) of the light uniforming device 5N of present embodiment and said the 4th embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5N of present embodiment and not existing together of the light uniforming device 5C of said the 4th embodiment only are that in the present embodiment, the section of the sidewall 423 of said pothole 42 is straight lines.
With reference to Figure 20, show the cross-sectional schematic of the light uniforming device of sixteenth embodiment of the invention.The light uniforming device 5B (Fig. 7) of the light uniforming device 5P of present embodiment and said the 3rd embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5P of present embodiment and not existing together of the light uniforming device 5B of said the 3rd embodiment only are that in the present embodiment, said even tabula rasa 41 has at least one hole, the end 50 in addition, and hole, the said end 50 is a semielliptical shape external form.
With reference to Figure 21, show the schematic top plan view of the light uniforming device of seventeenth embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5Q of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5Q of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only are; In the present embodiment; Said even tabula rasa 41 comprises a plurality of scatterings hole 53 in addition, is positioned at the side of said pothole 42, and said scattering hole 53 roughly presents the V font to overlook.Said scattering hole 53 can be through hole or blind hole, and its shape can be irregularly shaped, the light that is sent in order to diffusion or the said LED 45,46,47,48 of scattering.
With reference to Figure 22, show the schematic top plan view of the light uniforming device of eighteenth embodiment of the invention.The light uniforming device 4 (Fig. 5) of the light uniforming device 5R of present embodiment and said first embodiment is roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5R of present embodiment and not existing together of the light uniforming device 4 of said first embodiment only be, in the present embodiment, and said light emitting source (said LED 45,46; Has skew between under the core of geometric center 47,48) and said pothole 42, promptly said light emitting source (said LED 45,46; 47,48) be not positioned at said pothole 42 under, and said light emitting source (said LED 45; 46,47,48) than center near said even tabula rasa 41.
With reference to figure 23A and Figure 23 B, show the overlooking and cross-sectional schematic of light uniforming device of nineteenth embodiment of the invention respectively.The light uniforming device 5S of present embodiment and the light uniforming device 5J (Figure 15) of said the 11 embodiment are roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5S of present embodiment and not the existing together of light uniforming device 5J of said the 11 embodiment only are that in the present embodiment, said pothole 42 comprises accommodation space 424 in addition, in order to ccontaining reflector plate 44.
With reference to figure 24A and Figure 24 B, show the overlooking and cross-sectional schematic of light uniforming device of twentieth embodiment of the invention respectively.The light uniforming device 5T of present embodiment and the light uniforming device 5S of said the 19 embodiment (Figure 23 A and Figure 23 B) are roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5T of present embodiment and not the existing together of light uniforming device 5S of said the 19 embodiment only be, in the present embodiment, has skew between under the geometric center of said light emitting source (said LED 45,46,47,48) and the core of said pothole 42.
With reference to figure 25A and Figure 25 B, show the overlooking and cross-sectional schematic of light uniforming device of 21st embodiment of the invention respectively.The light uniforming device 5U of present embodiment and the light uniforming device 5S of said the 19 embodiment (Figure 23 A and Figure 23 B) are roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5U of present embodiment and not the existing together of light uniforming device 5S of said the 19 embodiment only are that said even tabula rasa 41 comprises a plurality of scatterings hole 53 in addition, is positioned at the side of said pothole 42.
With reference to figure 26A and Figure 26 B, show the overlooking and cross-sectional schematic of light uniforming device of 22nd embodiment of the invention respectively.The light uniforming device 5V of present embodiment and the light uniforming device 5U of said the 21 embodiment (Figure 25 A and Figure 25 B) are roughly the same, and wherein components identical is given identical numbering.The light uniforming device 5V of present embodiment and not the existing together of light uniforming device 5U of said the 21 embodiment only are; In the present embodiment, said light emitting source (said LED 45,46; Has skew between under the core of geometric center 47,48) and said pothole 42.
Specify the present invention with following instance, but and do not mean that the present invention only limits to the content that these instances disclose at present.
Instance 1:
The light uniforming device 4 (Fig. 5) of 4 first embodiment of the invention is arranged in 2 * 2 arrays, like the light uniforming device 4 of Fig. 4,4A; 4B; Shown in the 4C, wherein the thickness of each light uniforming device 4 is 2mm, then diffusion layer 31 is placed on the said light uniforming device 4; The thickness of wherein said diffusion layer 31 is 0.6mm, and the distance of said diffusion layer 31 and said light uniforming device 4 is 18mm.Then, utilize the color brightness photometer on said diffusion layer 31, to do measurement, measurement result is following, and color uniformity coefficient (Color Uniformity) is 11.48%, and average illumination (Average Illuminance) is 5474.926Lux.
Instance 2:
The light uniforming device 5A (Fig. 6) of 4 second embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 16.31%, and average illumination is 4878.782Lux.
Instance 3:
The light uniforming device 5B (Fig. 7) of 4 third embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 15.88%, and average illumination is 4954.394Lux.
Instance 4:
The light uniforming device 5J (Figure 15) of 4 eleventh embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 9.59%, and average illumination is 3115.113Lux.
Instance 5:
The light uniforming device 5K (Figure 16) of 4 twelveth embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 9.59%, and average illumination is 1915.517Lux.
Instance 6:
The light uniforming device 5L (Figure 17) of 4 thriteenth embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 15.63%, and average illumination is 3576.559Lux.
Instance 7:
The light uniforming device 5M (Figure 18) of 4 fourteenth embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 9.44%, and average illumination is 4264.599Lux.
Instance 8:
The light uniforming device 5N (Figure 19) of 4 fifteenth embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 14.89%, and average illumination is 3859.272Lux.
Instance 9:
The light uniforming device 5P (Figure 20) of 4 sixteenth embodiment of the invention is arranged in 2 * 2 arrays, and all test conditions such as instance 1, the measurement result of this instance is following, and the color uniformity coefficient is 15.08%, and average illumination is 4853.356Lux.
Instance 10:
The light uniforming device 4 (Fig. 5) of 28 first embodiment of the invention is arranged in 4 * 7 arrays, and all test conditions such as instance 1, this instance begins to measure after LED opens 10 minutes, and measurement result is following, and mean flow rate is 7226.22 (cd/m
2), luminance uniformity (Brightness Uniformity) is 84.52%, color uniformity coefficient (Color Uniformity, Δ u ' v ') is 0.025.
Instance 11:
The light uniforming device 5S (Figure 23 A and Figure 23 B) of 28 nineteenth embodiment of the invention is arranged in 4 * 7 arrays, and all test conditions such as instance 1, this instance begins to measure after LED opens 10 minutes, and measurement result is following, and mean flow rate is 7716.38 (cd/m
2), luminance uniformity is 87.42%, the color uniformity coefficient is 0.025.
Instance 12:
The light uniforming device 5T (Figure 24 A and Figure 24 B) of 28 twentieth embodiment of the invention is arranged in 4 * 7 arrays, and said light emitting source (said LED 45,46; 47; Side-play amount between under the core of geometric center 48) and said pothole 42 is 0.22mm, and all test conditions such as instance 1, and this instance begins to measure after LED opens 10 minutes; Measurement result is following, and mean flow rate is 7786 (cd/m
2), luminance uniformity is 88%, the color uniformity coefficient is 0.023.
Instance 13:
The light uniforming device 5U (Figure 25 A and Figure 25 B) of 9 21st embodiment of the invention is arranged in 3 * 3 arrays, and all test conditions such as instance 1, this instance begins to measure after LED opens 10 minutes, and measurement result is following, and mean flow rate is 7162.49 (cd/m
2), luminance uniformity is 88.00%, the color uniformity coefficient is 0.025.
Instance 14:
The light uniforming device 5V (Figure 26 A and Figure 26 B) of 9 22nd embodiment of the invention is arranged in 3 * 3 arrays, and said light emitting source (said LED 45,46; 47; Side-play amount between under the core of geometric center 48) and said pothole 42 is 0.22mm, and all test conditions such as instance 1, and this instance begins to measure after LED opens 10 minutes; Measurement result is following, and mean flow rate is 7275.45 (cd/m
2), luminance uniformity is 87.06%, the color uniformity coefficient is 0.024.
The foregoing description is merely explanation principle of the present invention and effect thereof, and unrestricted the present invention, so the those skilled in the art makes amendment to the foregoing description and changes and still do not break away from spirit of the present invention.It is listed that interest field of the present invention should be liked claims enclosed.
Claims (13)
1. light uniforming device, it comprises:
Even tabula rasa, it has upper surface, lower surface, at least one hole, the end and at least one pothole, and said pothole is opened on said upper surface; Said pothole has periphery, core, accommodation space and sidewall; Said sidewall extends downwardly into said core from said periphery, and said accommodation space is positioned at the periphery of said pothole, in order to ccontaining reflector plate; Hole, the said end is positioned at the below relative position of said pothole; And be opened on the lower surface of said even tabula rasa, hole, the said end has roof and sidewall, and said roof is recessed curved surface; And
At least one light emitting source, it is positioned at the below of said even tabula rasa lower surface and relative with said pothole, and said light emitting source is positioned at outside the hole, the said end.
2. light uniforming device according to claim 1, the sidewall of wherein said pothole are coniform external form.
3. light uniforming device according to claim 1, the section of the sidewall of wherein said pothole are that two side lines intersect at said core.
4. light uniforming device according to claim 3, wherein said side line is a straight line.
5. light uniforming device according to claim 3, wherein said side line is a curve.
6. light uniforming device according to claim 3, wherein said side line is made up of the line segment of a plurality of Different Slope.
7. light uniforming device according to claim 3, wherein each side line comprises straight lines and curved segments.
8. light uniforming device according to claim 1, wherein said even tabula rasa comprises at least one scattering hole in addition, it is positioned at the side of said pothole.
9. light uniforming device according to claim 1 has skew between under the geometric center of wherein said light emitting source and the core of said pothole.
10. backlight module, it comprises:
A plurality of light uniforming devices, it is arranged on the plane with array way, and each light uniforming device comprises:
Even tabula rasa, it has upper surface, lower surface, at least one hole, the end and at least one pothole, and said pothole is opened on said upper surface; Said pothole has periphery, core, accommodation space and sidewall; Said sidewall extends downwardly into said core by said periphery, and said accommodation space is positioned at the periphery of said pothole, in order to ccontaining reflector plate; Hole, the said end is positioned at the below relative position of said pothole; And be opened on the lower surface of said even tabula rasa, hole, the said end has roof and sidewall, and said roof is recessed curved surface; And
At least one light emitting source, it is positioned at the below of said even tabula rasa lower surface and relative with said pothole, and said light emitting source is positioned at outside the hole, the said end; And
Diffusion layer, it is positioned at the top of said light uniforming device.
11. backlight module according to claim 10, it comprises perisphere in addition, and its coating is positioned at peripheral said even tabula rasa, and said perisphere is a total reflection layer.
12. backlight module according to claim 10, wherein said even tabula rasa comprises at least one scattering hole in addition, and it is positioned at the side of said pothole.
13. backlight module according to claim 10 has skew between under the geometric center of wherein said light emitting source and the core of said pothole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100059758A CN101515068B (en) | 2008-02-20 | 2008-02-20 | Light evener and backlight module comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100059758A CN101515068B (en) | 2008-02-20 | 2008-02-20 | Light evener and backlight module comprising same |
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| Publication Number | Publication Date |
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| CN101515068A CN101515068A (en) | 2009-08-26 |
| CN101515068B true CN101515068B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100059758A Expired - Fee Related CN101515068B (en) | 2008-02-20 | 2008-02-20 | Light evener and backlight module comprising same |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9075172B2 (en) | 2010-09-20 | 2015-07-07 | Luxingtek, Ltd. | Light converting optical structure and lighting device utilizing the same |
| WO2013037288A1 (en) * | 2011-09-14 | 2013-03-21 | 敦网光电股份有限公司 | Direct type light guide structure, direct type light guide plate and light emitting device |
| KR101957184B1 (en) | 2011-12-02 | 2019-03-13 | 엘지전자 주식회사 | Backlight unit and display apparatus having the same |
| CN103364871B (en) * | 2012-03-28 | 2017-02-15 | 容云 | Light equalizer, and solar energy and electric heating mixing utilization system |
| CN102691945B (en) * | 2012-06-07 | 2015-04-01 | 深圳市华星光电技术有限公司 | Edge-lighting backlight module |
| CN103343925B (en) * | 2013-07-19 | 2015-08-26 | 深圳市华星光电技术有限公司 | Display device and manufacture method thereof |
| CN103411167B (en) * | 2013-08-27 | 2015-08-26 | 苏州茂立光电科技有限公司 | Direct type backlight module |
| CN109147605B (en) * | 2018-10-16 | 2021-12-03 | Tcl通力电子（惠州）有限公司 | Identification structure and electronic device |
| CN113975646A (en) * | 2021-11-02 | 2022-01-28 | 中国人民解放军总医院第一医学中心 | LED uniform luminous component suitable for human body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000427A (en) * | 2006-01-11 | 2007-07-18 | 三星电机株式会社 | Backlight unit improved in light mixing feature |
| CN101206280A (en) * | 2007-12-20 | 2008-06-25 | 清华大学 | Light guide board and back light module unit using the same |
-
2008
- 2008-02-20 CN CN2008100059758A patent/CN101515068B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000427A (en) * | 2006-01-11 | 2007-07-18 | 三星电机株式会社 | Backlight unit improved in light mixing feature |
| CN101206280A (en) * | 2007-12-20 | 2008-06-25 | 清华大学 | Light guide board and back light module unit using the same |
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| CN101515068A (en) | 2009-08-26 |
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