CN101956909A - Light source, backlight module using same, and liquid crystal display device using same - Google Patents
Light source, backlight module using same, and liquid crystal display device using same Download PDFInfo
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- CN101956909A CN101956909A CN2009101607275A CN200910160727A CN101956909A CN 101956909 A CN101956909 A CN 101956909A CN 2009101607275 A CN2009101607275 A CN 2009101607275A CN 200910160727 A CN200910160727 A CN 200910160727A CN 101956909 A CN101956909 A CN 101956909A
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Abstract
The invention discloses a light source, a backlight module using the same and a liquid crystal display device using the same. The light source comprises a base, a chip and a lens. The chip is arranged on the base. The lens has a flat surface, a curved surface and a long-axis direction. The flat surface is arranged relative to the curved surface. The chip is used for emitting a light beam passing through the lens. The light beam has a first direction light-emitting angle on a plane vertical to the long-axis direction. The curved surface has a curvature on the plane vertical to the long-axis direction. The first direction light-emitting angle of the light beam before entering the lens is greater than the first direction light-emitting angle of the light beam exiting from the lens. In the invention, the light-emitting angle of a light-emitting diode on a plane vertical to a light guide plate can be reduced, and thus, the efficiency of the light coupling between the light-emitting diode and the light guide plate is improved.
Description
[technical field]
The invention relates to a kind of light source and module backlight and the liquid crystal indicator of using it, and particularly relevant for a kind of module backlight and liquid crystal indicator that dwindles the light source of wafer lighting angle and use it.
[background technology]
(light emitting diode LED) has that driving voltage lowly, low pollutes, in light weight, advantage such as volume is little, has become one of main light source of module backlight in the following liquid crystal indicator because light emitting diode.With the notebook computer is example, at present mostly with the light source of light emitting diode as side-light type module backlight, and receives the light that light emitting diode sends by LGP, make light via light-guide plate guides to display panels.
Because the peculiar structure of light emitting diode, (normal with the lumination of light emitting diode face is 0 degree to its light that sends in the angle of divergence of horizontal (being on the plane of parallel conductive tabula rasa) and vertical (being on the plane of vertical LGP), be that luminous intensity is the angle of departure scope of the distribution of light of maximum intensity more than 1/2) be about 120 degree all respectively, cause the course of part light can't arrive LGP and cause the light utilization rate not good.For the light that effectively utilizes light emitting diode to send, generally be with the light coupling efficient between " adjusting the distance between light emitting diode and the LGP " or " utilizing reflection lampshade (lamp holder) " raising light emitting diode and the LGP.
Specifically, please refer to Figure 1A, Figure 1B and Fig. 1 C, Figure 1A illustrates a kind of schematic diagram of traditional module backlight, and Figure 1B illustrates the schematic diagram when light mixing distance is not enough among Figure 1A, and Fig. 1 C illustrates the schematic diagram when light mixing distance is long among Figure 1A.Shown in Figure 1A, traditional module backlight 100 comprises a circuit board 110, at least one light emitting diode 120 and a LGP 130.Light emitting diode 120 is to be electrically connected at circuit board 110, and in order to emit beam (being illustrated in Figure 1B and Fig. 1 C) to LGP 130, LGP 130 is to receive the light that light emitting diode 120 sends.
Shown in Figure 1B, by shortening space D 1 between light emitting diode 120 and the LGP 130 to improve the light coupling efficient of light emitting diode 120 and LGP 130 on the XZ plane.Yet because light emitting diode 120 sends the high light of directive property, therefore the light of launching is gathered in the zone easily, for example in the angle of divergence 120 degree.Therefore, if the space D 1 between light emitting diode 120 and the LGP 130 is too small, then the part zone of LGP 130 can't receive the light that light emitting diode 120 sends, thereby produces dark space A.Thus, LGP 130 receives uneven light, therefore reduces the optical homogeneity of module backlight.In addition,, make light emitting diode 120 easy scratch LGPs 130 in the assembling process, therefore reduce optical homogeneity and produce yield because space D 1 is too small.
Yet, shown in Fig. 1 C, if along with the space D 2 between light emitting diode 120 and the LGP 130 strengthens gradually, then the part zone of LGP 130 begins to repeat to receive the light that light emitting diode 120 sends, thereby generation clear zone B, therefore though can reach suitable mixed light effect,, make the light coupling efficient reduction of light emitting diode 120 and LGP 130 on the XZ plane because light emitting diode 120 strengthens with space D 2 between the LGP 130.
Please refer to Fig. 2 A and Fig. 2 B, Fig. 2 A illustrates the schematic diagram of the traditional module backlight of another kind, and Fig. 2 B illustrates the vertical view of the module backlight of Fig. 2 A.The module backlight 200 of Fig. 2 A and the module backlight 100 of Figure 1A different are in: module 200 backlight and comprise that more a reflection lampshade 240 is arranged at around the light emitting diode 220.Shown in Fig. 2 B, the light of light emitting diode 220 being launched with the big angle of departure except the light of direct incident LGP on the XZ plane by reflection lampshade 240 reflexes to LGP 230, to increase the light coupling efficient on the XZ plane between light emitting diode 220 and the LGP 230.Yet the material of reflection lampshade 240 is generally aluminium, is easy light-absorbing material, thereby reduces the light utilization efficiency of the light that is reflected.In addition, because therefore the characteristic of about 120 degree of the angle of divergence of light emitting diode 220 still has part light still can be spilt by the slit between LGP 230 and the reflection lampshade 240.Thus, be need more effective lifting light emitting diode 220 and LGP 230 between light coupling efficient on the XZ plane.
[summary of the invention]
In view of this, the invention relates to a kind of light source and module backlight and the liquid crystal indicator of using it, be that the lens that have curvature on will the plane perpendicular to LGP are arranged on the light emitting diode, dwindle the lighting angle of light emitting diode on the plane of vertical LGP, to promote the light coupling efficient between light emitting diode and the LGP.
According to an aspect of the present invention, propose a kind of light source, comprise a base, a wafer and lens.Wafer is to be arranged on the base.Lens have a tabular surface, a curved surface and a long axis direction.Tabular surface is with respect to the curved surface setting.Wafer is in order to launch light penetration scioptics.Wherein, light has perpendicular to the first direction lighting angle on the plane of long axis direction.Curved surface has curvature on the plane of vertical long axis direction.The first direction lighting angle that penetrates the light before the scioptics is greater than the first direction lighting angle that penetrates the light behind the scioptics.
According to a further aspect in the invention, propose a kind of module backlight, comprise a circuit board, at least one light emitting diode, at least one lens and a LGP.Light emitting diode is to be electrically connected at circuit board, and comprises a base and a wafer.Wafer is arranged on the base.Lens have a tabular surface, a curved surface and a long axis direction.Tabular surface is with respect to the curved surface setting.Wafer is in order to launch light penetration scioptics.Curved surface is towards LGP, makes LGP receive light.Wherein, light has perpendicular to the first direction lighting angle on the plane of long axis direction.Curved surface has curvature on the plane of vertical long axis direction.The first direction lighting angle that penetrates the light before the scioptics is greater than the first direction lighting angle that penetrates the light behind the scioptics.
In accordance with a further aspect of the present invention, propose a kind of liquid crystal indicator, comprise a display panels and a module backlight.Module backlight is arranged at a side of display panels, and comprises a circuit board, at least one light emitting diode, at least one lens and a LGP.Light emitting diode is to be electrically connected at circuit board, and comprises a base and a wafer.Wafer is arranged on the base.Lens have a tabular surface, a curved surface and a long axis direction.Tabular surface is with respect to the curved surface setting.Wafer is in order to launch light penetration scioptics.Curved surface is towards LGP, makes LGP receive light, with conducting light to display panels.Wherein, light has perpendicular to the first direction lighting angle on the plane of long axis direction.Curved surface has curvature on the plane of vertical long axis direction.The first direction lighting angle that penetrates the light before the scioptics is greater than the first direction lighting angle that penetrates the light behind the scioptics.
In sum, light source of the present invention and module backlight and the liquid crystal indicator of using it, the lens that have curvature on will the plane perpendicular to LGP are arranged on the light emitting diode, can dwindle the lighting angle of light emitting diode on the plane of vertical LGP, thereby promote the light coupling efficient between light emitting diode and the LGP.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
[description of drawings]
Figure 1A illustrates a kind of schematic diagram of traditional module backlight;
Figure 1B illustrates the schematic diagram when light mixing distance is not enough among Figure 1A;
Fig. 1 C illustrates the schematic diagram when light mixing distance extends among Figure 1A;
Fig. 2 A illustrates the schematic diagram of the traditional module backlight of another kind;
Fig. 2 B illustrates the vertical view of the module backlight of Fig. 2 A;
Fig. 3 illustrates the schematic diagram according to the liquid crystal indicator of first embodiment of the invention;
Fig. 4 illustrates the side view of the liquid crystal indicator of Fig. 3;
Fig. 5 illustrates the posterior view of Fig. 3;
Fig. 6 illustrates according to the light emitting diode of first embodiment of the invention and the schematic diagram of lens;
Fig. 7 illustrates according to the light emitting diode of second embodiment of the invention and the schematic diagram of lens;
Fig. 8 illustrates the schematic diagram of light emitting diode, lens and circuit board according to third embodiment of the invention;
Fig. 9 illustrates according to the light emitting diode of fourth embodiment of the invention and the schematic diagram of lens;
Figure 10 illustrates according to the light emitting diode of fifth embodiment of the invention and the schematic diagram of lens; And
Figure 11 illustrates the schematic diagram of light emitting diode, lens and circuit board according to sixth embodiment of the invention.
100,200,320: module backlight
110,210,330,530,830: circuit board
120,220: light emitting diode
130,230,360: LGP
240: reflection lampshade
300: liquid crystal indicator
310: display panels
340,440,540,640a, 640b, 740a, 740b, 840a, 840b: light emitting diode
342,442,542,642a, 642b, 742a, 742b, 842a, 842b: base
344,444,544,644a, 644b, 744a, 744b, 844a, 844b: wafer
346,446,546,646a, 646b, 746a, 746b, 846a, 846b: packaging body
350,450,550,650,750,850: lens
352: tabular surface
354: curved surface
372,374: light path
441a, 441b, 531a, 531b, 741a, 741b, 831a, 831b: hole
451a, 451b, 551a, 551b, 751a, 751b, 851a, 851b: fixed leg
452a, 452b, 552a, 552b, 752a, 752b, 852a, 852b: flange
A: dark space
B: clear zone
D1, D2: spacing
Y: long axis direction
[specific embodiment]
First embodiment
Please refer to Fig. 3 and Fig. 4, Fig. 3 illustrates the schematic diagram according to the liquid crystal indicator of first embodiment of the invention, and Fig. 4 illustrates the side view of the liquid crystal indicator of Fig. 3.Liquid crystal indicator 300 comprises a display panels 310 and a module 320 backlight.Module 320 backlight is sides that are arranged at display panels 310, and comprises a circuit board 330, at least one light emitting diode 340, at least one lens 350 and a LGP 360.Light emitting diode 340 is to be electrically connected at circuit board 330, and comprises a base 342, a wafer 344 and a packaging body 346.Wafer 344 is arranged on the base 342, and can for example be blue light-emitting diode wafer (light emitting diode chip, LED chip), and right wafer 344 also can be LED wafer or other wafers that can emit beam of other colors.Lens 350 are that respective leds 340 is arranged on the packaging body 346, and wafer 344 is in order to launch a light penetration by packaging body 346 and lens 350.Lens 350 have a tabular surface 352, a curved surface 354 and a long axis direction Y.Tabular surface 352 is to be provided with respect to curved surface 354.Curved surface 354 is to be provided with towards LGP 360, then enters LGP 360 after the light penetration lens 350, and LGP 360 is in order to light is conducted to display panels 310.Tabular surface 352 has a normal direction X, with the direction of X and Y quadrature then be Z.
As shown in Figure 4, the light that wafer 344 sends comprises one first light path 372, and first light path 372 has the last first direction lighting angle θ in plane (XZ plane) perpendicular to long axis direction Y
1Because the curved surface 354 of lens 350 has curvature on the plane (XZ plane) of vertical long axis direction Y, so penetrate the first direction lighting angle θ of first light path 372 before the scioptics 350
1Be greater than the first direction lighting angle θ that penetrates first light path 372 behind the scioptics 350
1'.Liquid crystal indicator 300 according to first embodiment of the invention, be to dwindle perpendicular to the angle behind the light penetration scioptics 350 on the plane (XZ plane) of long axis direction Y, make light towards LGP 360 convergences, whereby to improve the light coupling efficient between light emitting diode 340 and the LGP 360.In addition,, the light source utilization rate is promoted,, therefore have cost-effective advantage so the quantity of light source 340 can reduce relatively because light coupling efficient promotes.
Please refer to Fig. 5, it illustrates the posterior view (being Z direction view) of Fig. 3.The light that wafer 344 sends more comprises one second light path 374.Second light path 374 has the second direction lighting angle θ on LGP 360 planes (XY plane) that are parallel to long axis direction Y
2, and second light path 374 that penetrates behind the scioptics 350 has second direction lighting angle θ
2'.Because the curved surface 354 of lens 350 is not had curvature on the plane (XY plane) of the LGP 360 of parallel long axis direction Y, therefore the lighting angle on the plane (XY plane) compared to traditional module backlight in LGP 360 penetrates the second direction lighting angle θ of second light path 374 behind the scioptics 350
2' come down to not change, therefore need not change the spacing of different chips 344.Thus, be same as distance between the light emitting diode and LGP in traditional module backlight in fact according to the distance between light emitting diode 340 and the LGP 360 in the module backlight 320 of first embodiment of the invention, make the size of module 320 backlight compatible in the size of traditional module backlight.
In addition, packaging body 346 preferably is a transparent sealing.Transparent sealing is to be arranged on the base 342 and cover wafers 344, and increasing the optical efficiency of getting of luminescent wafer, transparent sealing can be one to comprise the colloid that blue light is converted to the white light functional material.Lens 350 are to be connected in packaging body 346 by tabular surface 352.Moreover, the material of base 352 preferably be polymethyl methacrylate (Polymethylmethacrylate, PMMA), or ceramic material (ceramics).
In addition, as shown in Figure 3, module 320 backlight comprises a plurality of light emitting diodes 340 and a plurality of lens 350, and these light emitting diodes 340 are to be disposed on the circuit board 330 along long axis direction Y.In the present embodiment, these a little lens 350 are respectively the structure of a column, and its material is transparent optical resin (for example light-transmitting materials of epoxy resin), silica gel or glass.In addition, because curvature is not all had in a plurality of lens 350 sides facing each other, therefore can not change the required light mixing distance of light that different chips 344 sends.
Please refer to Fig. 6, it illustrates according to the light emitting diode of first embodiment of the invention and the schematic diagram of lens.In present embodiment, lens 350 are to be fixed in base 342 in bonding mode, and the set-up mode of right lens 350 is to be not restricted to this, and it can also other modes be fixed.For example lens 350 are utilized connected structure to be fixed on the base 342, perhaps lens 350 are fixed in circuit board 330 first-class modes, will describe in detail in other embodiment.
The above-mentioned liquid crystal indicator 300 that discloses according to first embodiment of the invention is the characteristics that have curvature by the curved surface 354 of lens 350 on the plane of vertical long axis direction Y, makes the first direction lighting angle θ that penetrates first light path 372 before the scioptics 350
1, greater than the first direction lighting angle θ that penetrates first light path 372 behind the scioptics 350
1'.Thus, can dwindle the lighting angle of wafer 344, increase the amount that light enters LGP 360, so as to improving light coupling efficient.Moreover because light coupling efficient improves, so the quantity of wafer 344 can relatively reduce, more escapable cost.Secondly, because the curved surface 354 of lens 350 is not had curvature on the plane (XY plane) of the LGP 360 of parallel long axis direction Y, therefore compared to the traditional lighting angle of module backlight on the plane of LGP 360, penetrate the second direction lighting angle θ of second light path 374 behind the scioptics 350
2' come down to not change, therefore, need not change the needed light mixing distance of light that different chips 344 sends.Thus, the size according to the module backlight 320 of first embodiment of the invention is compatible size in traditional module backlight.In addition, in present embodiment, lens 350 are fixed in base 342 by bonding mode, so that lens 350 firmly are bonded in base 342.
Second embodiment
The difference of second embodiment and first embodiment is the juncture of lens and light emitting diode, and all the other and the first embodiment something in common then repeat no more.In the present embodiment, be the base that lens is fixed in light emitting diode with fixed leg and hole.Please refer to Fig. 7, it illustrates according to the light emitting diode of second embodiment of the invention and the schematic diagram of lens.In present embodiment, lens 450 have fixed leg 451a and 451b, and fixed leg 451a and 451b are towards base 442 extensions and have flange 452a and 452b respectively.The two ends of the base 442 of light emitting diode 440 have hole 441a and 441b respectively, flange 452a and 452b are respectively via hole 441a and 441b clamping base 442, so as to connecting lens 450 in base 442, fixed leg 451a and 451b are can be one-body molded with for example transparent resin and injection molding method with lens 450.
In present embodiment,, so be not in order to limit to technical scope of the present invention though the position of fixed leg 541a and 451b and hole 441a and 441b and quantity are to be that example explains with Fig. 7.That is to say that the quantity of fixed leg 541a and 451b and hole 441a and 441b and position all can be done suitably to adjust according to different situations.Except having the advantage that first embodiment mentions, the fixed form of the lens 450 that disclose for present embodiment has more assembling and dismounting is easy to advantage.
The 3rd embodiment
The different set-up modes that are in lens of the 3rd embodiment and first embodiment, lens are to be fixed on the circuit board in the present embodiment, all the other and the above-mentioned first embodiment something in common repeat no more.Please refer to Fig. 8, it illustrates the schematic diagram of light emitting diode, lens and circuit board according to third embodiment of the invention.In present embodiment, lens 550 have fixed leg 551a and 551b, fixed leg 551a and 551b are towards circuit board 530 extensions and have flange 552a and 552b respectively, and circuit board 530 has hole 531a and 531b, flange 552a and 552b are via hole 531a and 531b clamping circuit board 530, so as to connecting lens 550 in circuit board 530, fixed leg 551a and 551b are can be integrally formed with for example transparent resin and injection molding mode with lens 450.
In present embodiment,, so be not in order to limit to technical scope of the present invention though the position of fixed leg 551a and 551b and hole 531a and 531b and quantity are to be that example explains with Fig. 8.That is to say that the quantity of fixed leg 551a and 551b and hole 531a and 531b and position all can be done suitably to adjust according to different situations.Except having the advantage that first embodiment mentions, the fixed form of the lens 350 that disclose for present embodiment has more assembling and dismounting is easy to advantage.
The 4th embodiment
The difference of the 4th embodiment and first embodiment is the configuration mode of lens, is that the set-up mode with the corresponding a plurality of light emitting diodes of lens describes in the present embodiment, and all the other are identical with first embodiment locates then to repeat no more.Please refer to Fig. 9, it illustrates according to the light emitting diode of fourth embodiment of the invention and the schematic diagram of lens.In present embodiment, lens 650 are that corresponding two light emitting diode 640a and 640b are provided with the light penetration scioptics 650 that two wafer 644a and 644b are sent.Lens 650 are to be fixed in base 642a and 642b in bonding mode.
In present embodiment,, so be not in order to limit technical scope of the present invention though Fig. 9 is that example explains with lens 650 corresponding two light emitting diode 640a and 640b.That is to say that when practical application, lens are can corresponding light emitting diode setting more than three or three.Except having the advantage that first embodiment mentions, the fixed form of the lens 650 that disclose for present embodiment more can be fixed lens simultaneously in a plurality of light emitting diodes, and then be improved packaging efficiency.
The 5th embodiment
The difference of the 5th embodiment and second embodiment is the configuration mode of lens.In the present embodiment, lens are corresponding a plurality of light emitting diode settings, and all the other are identical with second embodiment locates then to repeat no more.Please refer to Figure 10, it illustrates according to the light emitting diode of fifth embodiment of the invention and the schematic diagram of lens.In present embodiment, lens 750 are that corresponding two light emitting diode 740a and 740b are provided with the light penetration scioptics 750 that two wafer 744a and 744b are sent.Lens 750 have fixed leg 751a and 751b, and fixed leg 751a and 751b are towards base 742a and 742b extension and have flange 752a and 752b respectively.In present embodiment, the outside of base 742a has hole 741a, and side has hole 741b outside the base 742b, and flange 752a and 752b are connected in base 742a and 742b via hole 741a and 741b respectively, so as to connecting lens 750 in base 742a and 742b.
In present embodiment,, so be not in order to limit technical scope of the present invention though Figure 10 is that example explains with two light emitting diode 740a and 740b.That is to say that when practical application, lens 750 are can corresponding light emitting diode setting more than three or three.In addition, the fixed form of the lens 750 of present embodiment more can be utilized and only fix lens 750 in the mode of a plurality of light emitting diodes except the advantage that has second embodiment and mention, simplifies the step that a plurality of lens are set, and then improves packaging efficiency.
The 6th embodiment
The difference of the 6th embodiment and the 3rd embodiment is the configuration mode of lens, is that the mode with the corresponding a plurality of light emitting diode settings of lens describes in the present embodiment, and all the other are identical with the 3rd embodiment locates then to repeat no more.Please refer to Figure 11, it illustrates the schematic diagram of light emitting diode, lens and circuit board according to sixth embodiment of the invention.In present embodiment, lens 850 are that corresponding two light emitting diode 840a and 840b are provided with the light penetration scioptics 850 that two wafer 844a and 844b are sent.Lens 850 have fixed leg 851a and 851b, and fixed leg 851a and 851b are towards circuit board 830 extensions and have flange 852a and 852b respectively.Circuit board 830 has hole 831a and 831b, and hole 831a and 831b lay respectively on the circuit board 830 in the outside of light emitting diode 840a and 840b.Flange 852a and 852b are via hole 831a and 831b clamping circuit board 830, so as to connecting lens 850 in circuit board 830.
In present embodiment,, so be not in order to limit technical scope of the present invention though Figure 11 is that example explains with two light emitting diode 840a and 840b.That is to say that when practical application, lens 850 are can corresponding light emitting diode setting more than three or three.The configuration mode of the lens 850 of present embodiment more can be simplified the step that a plurality of lens are set by only fixing lens in a plurality of light emitting diodes, and then improve packaging efficiency except the advantage that has the 3rd embodiment and mention.
Above-mentioned according to the disclosed light source of preferred embodiment of the present invention and module backlight and the liquid crystal indicator of using it, have the following advantages at least:
One, " increase light coupling efficient ".The lens that have curvature on the plane with the vertical long axis direction are arranged on the light emitting diode, make light that wafer sends towards perpendicular on the plane of long axis direction during the emission of first direction lighting angle, penetrate first lighting angle before the scioptics greater than first lighting angle that penetrates behind the scioptics.Thus, can restrain the angle of the light that wafer launches, so that the light coupling efficient of wafer and LGP increases.
Two, " saving cost ".Because light coupling efficient promotes, can reduce the number of required light source/light emitting diode in the module backlight, therefore have cost-effective advantage.
Three, " be compatible to the size of traditional backlight module ".Compared to the second direction lighting angle of traditional module backlight on the LGP plane that is parallel to long axis direction, because the lens of preferred embodiment of the present invention are not had curvature on the plane of the axial LGP of parallel long, so light comes down to not change towards being parallel to second lighting angle that second direction lighting angle on the LGP plane penetrates behind the scioptics.Therefore, need not change the spacing of different light emitting diodes, be compatible size in traditional module backlight.
Four, " assembling and dismounting are easily ".Lens can utilize the flange on its fixed leg, are connected in base via hole, so as to connecting lens and base.The mode of this kind clamping has assembling and dismounting is easy to advantage.Secondly, also the flange on the fixed leg of lens can be connected in circuit board via hole,, also have the easy advantage of assembling and dismounting so as to connecting lens on circuit board.
Five, " be applicable to module backlight " with different chips number.In the preferred embodiment of the present invention, being lens can be engaged with a light emitting diode, or lens are engaged with a plurality of light emitting diodes, is the module backlight applicable to the light emitting diode with varying number.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.
Claims (19)
1. light source comprises:
One base;
One wafer is arranged on this base; And
One lens have a tabular surface, a curved surface and a long axis direction, and this tabular surface is with respect to this curved surface setting, and this wafer is in order to launch a light penetration by these lens;
Wherein, this light has perpendicular to the first direction lighting angle on the plane of this long axis direction, this curved surface has curvature on this plane of vertical this long axis direction, penetrate this first direction lighting angle by this light before these lens greater than this first direction lighting angle that penetrates by this light behind these lens.
2. light source as claimed in claim 1, wherein this curved surface does not have curvature on a plane of parallel this long axis direction, this light also has the second direction lighting angle on this plane that is parallel to this long axis direction, and this second direction lighting angle that penetrates by this light before these lens is equal to this second direction lighting angle that penetrates by this light behind these lens in fact.
3. light source as claimed in claim 1, wherein this structure also comprises:
One packaging body is arranged on this base and covers this wafer, and these lens are to be connected in this packaging body by this tabular surface.
4. light source as claimed in claim 1, wherein these lens are column.
5. light source as claimed in claim 1, wherein these lens have at least one fixed leg, and this fixed leg is towards this base extension and have a flange, and this base has at least one hole, this flange is via this this base of hole clamping, so as to connecting these lens in this base.
6. module backlight comprises:
One circuit board;
At least one light emitting diode is electrically connected at this circuit board and comprises:
One base; And
One wafer is arranged on this base;
At least one lens have a tabular surface, a curved surface and a long axis direction, and this tabular surface is with respect to this curved surface setting, and this wafer is in order to launch a light penetration by these lens; And
One LGP, this curved surface are towards this LGP, and this LGP is in order to receive this light;
Wherein, this light has perpendicular to the first direction lighting angle on the plane of this long axis direction, this curved surface has curvature on this plane of vertical this long axis direction, penetrate this first direction lighting angle by this light before these lens greater than this first direction lighting angle that penetrates by this light behind these lens.
7. module backlight as claimed in claim 6, wherein this curved surface does not have curvature on a plane of parallel this long axis direction, this light also has the second direction lighting angle on this plane that is parallel to this long axis direction, and this second direction lighting angle that penetrates by this light before these lens is equal to this second direction lighting angle that penetrates by this light behind these lens in fact.
8. module backlight as claimed in claim 6, wherein this light emitting diode more comprises:
One packaging body is arranged on this base and covers this wafer, and these lens are to be connected in this packaging body by this tabular surface.
9. module backlight as claimed in claim 6, wherein these lens are column.
10. module backlight as claimed in claim 6, wherein these lens have at least one fixed leg, and this fixed leg is towards this base extension and have a flange, and this base has at least one hole, this flange is via this this base of hole clamping, so as to connecting these lens in this base.
11. module backlight as claimed in claim 6, wherein these lens have at least one fixed leg, and this fixed leg is towards this circuit board extension and have a flange, and this circuit board has at least one hole, this flange is via this this circuit board of hole clamping, so as to connecting these lens in this circuit board.
12. module backlight as claimed in claim 6, wherein this module backlight has several light emitting diodes, and those light emitting diodes are provided with along this long axis direction.
13. a liquid crystal indicator comprises:
One display panels; And
One module backlight is arranged at a side of this display panels, and this module backlight comprises:
One circuit board;
At least one light emitting diode is electrically connected at this circuit board and comprises:
One base; And
One wafer is arranged on this base;
At least one lens have a tabular surface, a curved surface and a long axis direction, and this tabular surface is with respect to this curved surface setting, and this wafer is in order to launch a light penetration by these lens; And
One LGP, this curved surface are towards this LGP, and this LGP receives this light, to conduct this light to this display panels;
Wherein, this light has perpendicular to the first direction lighting angle on the plane of this long axis direction, this curved surface has curvature on this plane of vertical this long axis direction, penetrate this first direction lighting angle by this light before these lens greater than this first direction lighting angle that penetrates by this light behind these lens.
14. liquid crystal indicator as claimed in claim 13, wherein this curved surface does not have curvature on a plane of parallel this long axis direction, this light also has the second direction lighting angle on this plane that is parallel to this long axis direction, and this second direction lighting angle that penetrates by this light before these lens is equal to this second direction lighting angle that penetrates by this light behind these lens in fact.
15. liquid crystal indicator as claimed in claim 13, wherein this light emitting diode also comprises:
One packaging body is arranged on this base and covers this wafer, and these lens are to be connected in this packaging body by this tabular surface.
16. liquid crystal indicator as claimed in claim 13, wherein these lens are column.
17. liquid crystal indicator as claimed in claim 13, wherein these lens have at least one fixed leg, and this fixed leg is towards this base extension and have a flange, and this base has at least one hole, this flange is via this this base of hole clamping, so as to connecting these lens in this base.
18. liquid crystal indicator as claimed in claim 13, wherein these lens have at least one fixed leg, and this fixed leg is towards this circuit board extension and have a flange, and this circuit board has at least one hole, this flange is via this this circuit board of hole clamping, so as to connecting these lens in this circuit board.
19. liquid crystal indicator as claimed in claim 13, wherein this module backlight has several light emitting diodes, and those light emitting diodes are provided with along this long axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101607275A CN101956909A (en) | 2009-07-17 | 2009-07-17 | Light source, backlight module using same, and liquid crystal display device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101607275A CN101956909A (en) | 2009-07-17 | 2009-07-17 | Light source, backlight module using same, and liquid crystal display device using same |
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| Publication Number | Publication Date |
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| CN101956909A true CN101956909A (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101607275A Pending CN101956909A (en) | 2009-07-17 | 2009-07-17 | Light source, backlight module using same, and liquid crystal display device using same |
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| CN (1) | CN101956909A (en) |
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| CN102392963A (en) * | 2011-11-21 | 2012-03-28 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103363335A (en) * | 2012-04-05 | 2013-10-23 | 东莞万士达液晶显示器有限公司 | Luminescence device |
| WO2016101369A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Backlight module and display |
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| CN101430454A (en) * | 2007-11-07 | 2009-05-13 | 群康科技(深圳)有限公司 | Backlight module and LCD device |
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| CN102392963B (en) * | 2011-11-21 | 2014-01-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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| WO2016101369A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Backlight module and display |
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