CN101515068A - Light evener and backlight module comprising same - Google Patents
Light evener and backlight module comprising same Download PDFInfo
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- CN101515068A CN101515068A CNA2008100059758A CN200810005975A CN101515068A CN 101515068 A CN101515068 A CN 101515068A CN A2008100059758 A CNA2008100059758 A CN A2008100059758A CN 200810005975 A CN200810005975 A CN 200810005975A CN 101515068 A CN101515068 A CN 101515068A
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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 described light uniforming device, particularly a kind of modular light uniforming device and the backlight module that comprises described 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 piece (Packaged Light Guide Block) 20.
Described leaded light piece 20 is arranged and is installed on the described reflecting plate 10 with array way, and described leaded light piece 20 has appropriate intervals to each other.Each described leaded light piece 20 comprises leaded light main body 21, accommodation space 22 and four LED 23,24,25,26.The material of described leaded light main body 21 is can be for the acrylate resin of light penetration, and described leaded light main body 21 for cylindrical toroidal forms within it described accommodation space 22.Described accommodation space 22 is air layers, its ccontaining described LED 23,24,25,26.Described LED 23 is red-light LEDs, in order to send ruddiness; Described LED 24 is green light LEDs, in order to send green glow; Described LED 25 is green light LEDs, in order to send green glow; Described LED 26 is blue-ray LEDs, in order to send blue light.
By said structure, can being mixed into white light in the air layer of described accommodation space 22 after, outwards launch described LED 23,24,25,26 light that sent.Yet since described LED 23,24,25,26th, natural mixed light in air, so mixed light efficient is not high, and the thickness of described conventional backlight module integral body can't effectively be reduced; In addition, the quantity of the LED that described 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, the backlight module that is necessary to provide the light uniforming device of a kind of innovation and rich progressive and comprises described light uniforming device is 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.Described even tabula rasa has upper surface, lower surface and at least one pothole, and described pothole is opened on described upper surface, and described pothole has periphery, core and sidewall, and described sidewall extends downwardly into described core by described periphery.Described light emitting source is positioned at the below of described even tabula rasa lower surface and relative with described pothole.
By the backlight module that described modular light uniforming device constitutes, it does not need a sheet of traditionally light guide plate, so it is easily manufactured, technology is simple, low cost of manufacture and keep in repair easy.And the particular design of described light uniforming device can improve its mixed light efficient and brightness, and the area that makes described even tabula rasa reaches 50mm * 50mm, even, can reduce the quantity of described light uniforming device in the described like this backlight module, and then reduce the quantity of described 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 ninth 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.Described backlight module 3 comprises a plurality of light uniforming devices 4, diffusion layer (Diffuser) 31 and perisphere 32.Described light uniforming device 4 is arranged and is right after on a plane with array way.Described diffusion layer 31 is positioned at the top of described light uniforming device 4.Preferably, have suitable distance between described light uniforming device 4 and the described diffusion layer 31, and be pasted with multi-layer optical film (not shown) on the described diffusion layer 31, to increase optical effect.Described perisphere 32 coats and is positioned at peripheral described light uniforming device 4, and described perisphere 32 is total reflection layers, in order to carry out mixed light in the described light uniforming device 4 of light reflected back that described light uniforming device 4 is sent, prevents leakage of light.
Please also refer to Fig. 5, show the cross-sectional schematic of the light uniforming device of first embodiment of the invention.Described light uniforming device 4 comprises even tabula rasa (Uniformity Light Guide) 41 and at least one light emitting source.Described even tabula rasa 41 has upper surface 411, lower surface 412 and at least one pothole 42, described pothole 42 is opened on described upper surface 411, described pothole 42 has periphery 421, core 422 and sidewall 423, and described sidewall 423 extends downwardly into described core 422 by described periphery 421.
In the present embodiment, the material of described 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, described even tabula rasa 41 is light guide plate, and it is the tetrahedral structure with homogeneous thickness, and its upper surface 411 and lower surface 412 all are plane and parallel to each other.The peripheral surface of described even tabula rasa 41 comprises four faces.Be understandable that described even tabula rasa 41 also can be other polygons such as triangle or pentagon by overlooking.
Described light emitting source is positioned at the below of described even tabula rasa 41 lower surfaces 412 and relative with described pothole 42.In the present embodiment, the even tabula rasa 41 of described light uniforming device 4 has four potholes 42, and described light emitting source is four flat LED45,46,47,48 (Fig. 4), each LED be positioned at a pothole 42 under.Described LED 45,46,47,48 is positioned on the substrate 49.Described LED 45 is green light LEDs, in order to send green glow; Described LED 46 is blue-ray LEDs, in order to send blue light; Described LED 47 is red-light LEDs, in order to send ruddiness; Described LED 48 is green light LEDs, in order to send green glow.Yet in other was used, the quantity of described LED and described pothole 42 can be more than three or five.
Therefore in the present embodiment, the sidewall 423 of described pothole 42 is coniform external form, and the periphery 421 of described pothole 42 also is that the core 422 of circular and described pothole 42 is central points by overlooking.In other words, to be two side lines extended downwards and intersected at described core 422 by described periphery 421 section of the sidewall 423 of described pothole 42, and wherein each side line is a curve.Described sidewall 423 is parallel with described upper surface 411 or lower surface 412 in order to being reflected into horizontal direction from the light that described 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 described even tabula rasa 41 has microstructure 413.Described microstructure 413 is that periodicity or acyclic repeatability height rise and fall, in order to reflect the light that spreads in the described even tabula rasa 41, to increase the mixed light effect.The pattern of described 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 described groove or ridge is circular arc, square, trapezoidal, triangle or other profile.In other was used, the lower surface 412 of described even tabula rasa 41 had printed patterns, and described printed patterns can have and described microstructure 413 identical functions.In addition, the upper surface 411 of described even tabula rasa 41 also can have described microstructure 413.
Preferably, described light uniforming device 4 comprises reflection horizon 43 down in addition, is positioned at the lower surface 412 of described even tabula rasa 41, reflexes in the described even tabula rasa 41 in order to the light that described 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 as follows, light uniforming device 4A wherein, and 4B, 4C is identical with the structure of light uniforming device 4, does not exist together only to be the arrangement mode difference of the LED in it.In described light uniforming device 4, LED 45 is green light LEDs, and LED 46 is blue-ray LEDs, and described LED 47 is red-light LEDs, and LED 48 is green light LEDs.In described light uniforming device 4A, LED 45A is a green light LED, and LED 46A is a red-light LED, and described LED 47A is a blue-ray LED, and LED 48A is a green light LED.The arrangement mode of the LED of described light uniforming device 4B is identical with described light uniforming device 4A.The arrangement mode of the LED of described light uniforming device 4C is identical with described 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 described light uniforming device 4, and light uniforming device 4E is identical with described light uniforming device 4B.
Described backlight module 3 is owing to be that described modular light uniforming device constitutes, and do not need a sheet of traditionally light guide plate, so it is easily manufactured, technology simply and low cost of manufacture.In addition, because modular design, described 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 described even tabula rasa 41 reaches 50mm * 50mm, even, can reduce the quantity of described light uniforming device in the described 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 described 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 described first embodiment only are that in the present embodiment, two side lines of the section of the sidewall 423 of described 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 described 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 described first embodiment only are that in the present embodiment, the side line of the section of the sidewall 423 of described pothole 42 comprises two line segments 4231,4232, and the slope of described 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 described 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 described first embodiment only are that in the present embodiment, described pothole 42 comprises accommodation space 424 in addition, is positioned at the periphery 421 of described 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 described 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 described 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 described end 50 is positioned at the below of described pothole 42, and is opened on the lower surface 412 of described even tabula rasa 41.Hole, the described end 50 is cylindric external form.Described light emitting source (for example described LED 46) is positioned at outside the hole, the described 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 described 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 described the 5th embodiment only are that in the present embodiment, hole, the described end 50 has roof 51 and sidewall 52, and described 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 described 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 described the 6th embodiment only are that in the present embodiment, the minimum point of the roof 51 in hole, the described end 50 trims the lower surface 412 of described 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 described 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 described the 5th embodiment only are that in the present embodiment, hole, the described 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 ninth embodiment of the invention.The light uniforming device 5D (Fig. 9) of the light uniforming device 5H of present embodiment and described 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 described the 5th embodiment only are that in the present embodiment, hole, the described 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 described 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 described first embodiment only are that in the present embodiment, the side line of the section of the sidewall 423 of described pothole 42 comprises straight line line segment 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 described 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 described the 7th embodiment only are that in the present embodiment, the section of the sidewall 423 of described 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 described 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 described the 6th embodiment only are that in the present embodiment, the section of the sidewall 423 of described 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 described 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 described the 8th embodiment only are that in the present embodiment, the section of the sidewall 423 of described 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 described 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 described the 5th embodiment only are that in the present embodiment, the section of the sidewall 423 of described 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 described 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 described the 4th embodiment only are that in the present embodiment, the section of the sidewall 423 of described 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 described 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 described the 3rd embodiment only are that in the present embodiment, described even tabula rasa 41 has at least one hole, the end 50 in addition, and hole, the described 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 described 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 described first embodiment only are, in the present embodiment, described even tabula rasa 41 comprises a plurality of scatterings hole 53 in addition, is positioned at the side of described pothole 42, and described scattering hole 53 roughly presents the V font to overlook.Described scattering hole 53 can be through hole or blind hole, and its shape can be irregularly shaped, in order to diffusion or described LED 45,46,47,48 light that sent 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 described 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 described first embodiment only be, in the present embodiment, and described light emitting source (described LED 45, has skew between under the core of geometric center 46,47,48) and described pothole 42, be described light emitting source (described LED 45,46,47,48) be not positioned at described pothole 42 under, and described light emitting source (described LED 45,46,47,48) center of close described 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 described 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 described the 11 embodiment only are that in the present embodiment, described 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 described 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 described the 19 embodiment only are, in the present embodiment, described light emitting source (described LED 45,46, has skew between under the core of geometric center 47,48) and described 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 described 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 described the 19 embodiment only are that described even tabula rasa 41 comprises a plurality of scatterings hole 53 in addition, is positioned at the side of described 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 described 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 described the 21 embodiment only are, in the present embodiment, described light emitting source (described LED 45,46, has skew between under the core of geometric center 47,48) and described pothole 42.
Now describe the present invention in detail, but and do not mean that the present invention only limits to the content that these examples disclose with following example.
Example 1:
The light uniforming device 4 (Fig. 5) of 4 first embodiment of the invention is arranged in 2 * 2 arrays, light uniforming device 4 as 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 described light uniforming device 4, the thickness of wherein said diffusion layer 31 is 0.6mm, and the distance of described diffusion layer 31 and described light uniforming device 4 is 18mm.Then, utilize the color brightness photometer to do measurement on described diffusion layer 31, measurement result is as follows, and color uniformity coefficient (Color Uniformity) is 11.48%, and average illumination (Average Illuminance) is 5474.926Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 16.31%, and average illumination is 4878.782Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 15.88%, and average illumination is 4954.394Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 9.59%, and average illumination is 3115.113Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 9.59%, and average illumination is 1915.517Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 15.63%, and average illumination is 3576.559Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 9.44%, and average illumination is 4264.599Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 14.89%, and average illumination is 3859.272Lux.
Example 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 example 1, the measurement result of this example is as follows, and the color uniformity coefficient is 15.08%, and average illumination is 4853.356Lux.
Example 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 example 1, this example begins to measure after LED opens 10 minutes, and measurement result is as follows, 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.
Example 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 example 1, this example begins to measure after LED opens 10 minutes, and measurement result is as follows, and mean flow rate is 7716.38 (cd/m
2), luminance uniformity is 87.42%, the color uniformity coefficient is 0.025.
Example 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 described light emitting source (described LED 45,46,47, side-play amount between under the core of geometric center 48) and described pothole 42 is 0.22mm, and all test conditions such as example 1, and this example begins to measure after LED opens 10 minutes, measurement result is as follows, and mean flow rate is 7786 (cd/m
2), luminance uniformity is 88%, the color uniformity coefficient is 0.023.
Example 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 example 1, this example begins to measure after LED opens 10 minutes, and measurement result is as follows, and mean flow rate is 7162.49 (cd/m
2), luminance uniformity is 88.00%, the color uniformity coefficient is 0.025.
Example 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 described light emitting source (described LED 45,46,47, side-play amount between under the core of geometric center 48) and described pothole 42 is 0.22mm, and all test conditions such as example 1, and this example begins to measure after LED opens 10 minutes, measurement result is as follows, 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 only is 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.Interest field of the present invention should be listed as appended claims.
Claims (19)
1. light uniforming device, it comprises:
Even tabula rasa, it has upper surface, lower surface and at least one pothole, and described pothole is opened on described upper surface, and described pothole has periphery, core and sidewall, and described sidewall extends downwardly into described core from described periphery; And
At least one light emitting source, it is positioned at the below of described even tabula rasa lower surface and relative with described pothole.
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 described 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 line line segment and curved segments.
8. light uniforming device according to claim 1, wherein said pothole comprises accommodation space in addition, it is positioned at the periphery of described pothole, in order to ccontaining reflector plate.
9. light uniforming device according to claim 1, wherein said even tabula rasa has at least one hole, the end in addition, and hole, the described end is positioned at the below relative position of described pothole, and is opened on the lower surface of described even tabula rasa, and described light emitting source is positioned at outside the hole, the described end.
10. light uniforming device according to claim 9, hole, the wherein said end has roof and sidewall, and described roof is recessed curved surface.
11. light uniforming device according to claim 1, wherein said even tabula rasa comprises at least one scattering hole in addition, and it is positioned at the side of described pothole.
12. light uniforming device according to claim 1 has skew between under the geometric center of wherein said light emitting source and the core of described pothole.
13. a 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 and at least one pothole, and described pothole is opened on described upper surface, and described pothole has periphery, core and sidewall, and described sidewall extends downwardly into described core by described periphery; And
At least one light emitting source, it is positioned at the below of described even tabula rasa lower surface and relative with described pothole; And diffusion layer, it is positioned at the top of described light uniforming device.
14. backlight module according to claim 13, it comprises perisphere in addition, and its coating is positioned at peripheral described even tabula rasa, and described perisphere is a total reflection layer.
15. backlight module according to claim 13, wherein said pothole comprises accommodation space in addition, and it is positioned at the periphery of described pothole, in order to ccontaining reflector plate.
16. backlight module according to claim 13, wherein said even tabula rasa has at least one hole, the end in addition, and hole, the described end is positioned at the below relative position of described pothole, and is opened on the lower surface of described even tabula rasa, and described light emitting source is positioned at outside the hole, the described end.
17. backlight module according to claim 16, hole, the wherein said end has roof and sidewall, and described roof is recessed curved surface.
18. backlight module according to claim 13, wherein said even tabula rasa comprises at least one scattering hole in addition, and it is positioned at the side of described pothole.
19. backlight module according to claim 13 has skew between under the geometric center of wherein said light emitting source and the core of described 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 |
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| 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 true CN101515068A (en) | 2009-08-26 |
| CN101515068B 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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| CN (1) | CN101515068B (en) |
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| 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 |
| CN103364871A (en) * | 2012-03-28 | 2013-10-23 | 容云 | Light equalizer, and solar energy and electric heating mixing utilization system |
| CN103411167A (en) * | 2013-08-27 | 2013-11-27 | 苏州茂立光电科技有限公司 | Direct type backlight module |
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| KR100764368B1 (en) * | 2006-01-11 | 2007-10-08 | 삼성전기주식회사 | BLU Having Enhanced Light Mixing Feature |
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| 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 |
| CN102691945A (en) * | 2012-06-07 | 2012-09-26 | 深圳市华星光电技术有限公司 | Edge-lighting backlight module |
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| CN103411167B (en) * | 2013-08-27 | 2015-08-26 | 苏州茂立光电科技有限公司 | Direct type backlight module |
| CN103411167A (en) * | 2013-08-27 | 2013-11-27 | 苏州茂立光电科技有限公司 | Direct type backlight module |
| CN109147605A (en) * | 2018-10-16 | 2019-01-04 | Tcl通力电子（惠州）有限公司 | Identify structure and electronic device |
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