CN101737680A - Backlight module structure - Google Patents
Backlight module structure Download PDFInfo
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- CN101737680A CN101737680A CN200910259412A CN200910259412A CN101737680A CN 101737680 A CN101737680 A CN 101737680A CN 200910259412 A CN200910259412 A CN 200910259412A CN 200910259412 A CN200910259412 A CN 200910259412A CN 101737680 A CN101737680 A CN 101737680A
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Abstract
The invention relates to a backlight module structure comprising a light guide plate and a plurality of light-emitting diodes, wherein the light incoming end surface of the light guide plate is provided with a plurality of first microstructures and a plurality of second microstructures, wherein the first microstructures and the second microstructures are respectively arranged both ends of the light incoming end surface and distributed along the light incoming end surface, and the first illuminated surfaces of the first microstructures and the second illuminated surfaces of the second microstructures oppositely tilt in at least one tilt angle so that respective normal lines respectively deflect to an imaginary center of the light guide plate; the light-emitting diodes are provided with light-emitting surfaces which are respectively arranged opposite to the first illuminated surfaces or the second illuminated surfaces, and the light rays of the light-emitting diodes enter the light guide plate through the first illuminated surfaces and the second illuminated surfaces from the light-emitting surfaces.
Description
Technical field
The present invention is relevant for a kind of backlight modular structure; Particularly, the present invention is relevant for a kind of side entering type light-emitting diode (LED) backlight module structure that is lifted into optical efficiency.
Background technology
Towards frivolous, and under the trend of demand environmental protection and energy saving, replacing cold-cathode tube (CCFL) with light emitting diode (LED) has been undisputable fact as backlight in response to global display backlight source.Light emitting diode has the advantage of no mercury environmental protection, and cold-cathode tube more can make casing design slimming and improve luminous efficiency relatively.Therefore, backlight adopts LED almost to become main flow at notebook computer (NB), and many dealers comparatively leading on the LED application technology are more than the NB product proportion of employing LED-backlit has reached 9 one-tenth.
As shown in Figure 1, known side entering type backlight modular structure comprises LGP 10 and has the light-emitting diode light bar 20 that is distributed in more than 20 light emitting diode 22 of circuit board.The light-emitting area 24 of each light emitting diode 22 face respectively is located on the incidence surface 12 of LGP 10, to provide LGP 10 light sources.Because known luminescence diode 22 is arranged on the incidence surface 12 abreast, so the light of light emitting diode 22 is vertically injected the LGP 10 from incidence surface 12.As shown in Figure 2, show LGP 10 both sides light leaks (light leakage) fairly obvious (being the light in the square frame outside) by the computer program analog result.In other words, be positioned at the light emitting diode 22 of LGP 10 both sides, have most of light promptly can't be used effectively and waste, that is luminous efficiency can't promote.
No matter yet be as the one-sided light emitting diode 22 that is provided with of the LGP 10 of present embodiment so that backlight to be provided, or the above-mentioned light emitting diode 22 that be arranged in parallel with incidence surface 12 is set in LGP 10 both sides, three sides or four sides, all produce the problems referred to above.Therefore in order to improve known problem and to reach other purpose, the inventor proposes following design then.
Summary of the invention
Main purpose of the present invention is to provide a kind of backlight modular structure, makes the light emitting diode near the LGP both sides of the edge have the better backlight modular structure of going into optical efficiency.
Another object of the present invention is to provide a kind of backlight modular structure of imitating solution local dimming (local dimming) problem that has.
Another purpose of the present invention is to provide the backlight modular structure of a kind of raising module centers briliancy (brightness).
Another purpose of the present invention is to provide the backlight modular structure of a kind of minimizing light leak (reducing light leakage).
Another purpose of the present invention is to provide a kind of backlight modular structure that effectively light is concentrated on the same area.
The invention provides a kind of backlight modular structure and comprise LGP and a plurality of light emitting diode.LGP has light inlet end face and imaginary centres.Form a plurality of first micro-structurals and a plurality of second micro-structural on the light inlet end face, each first micro-structural and each second micro-structural are located at the two ends of light inlet end face respectively and are provided with along the distribution of light inlet end face, wherein each first micro-structural has first sensitive surface, and each second micro-structural has second sensitive surface.Above-mentioned first sensitive surface and at least one inclination angle of the above-mentioned second sensitive surface opposite tilt make normal separately be partial to imaginary centres respectively.A plurality of light emitting diodes, each light emitting diode have light-emitting area respectively above-mentioned relatively first sensitive surface and the above-mentioned second sensitive surface setting, the light of each light emitting diode from light-emitting area through above-mentioned first sensitive surface and the above-mentioned second sensitive surface incident LGP.
In preferred embodiment, the light-emitting area of each light emitting diode flushes setting with above-mentioned first sensitive surface and above-mentioned second sensitive surface respectively.Each first micro-structural and each second micro-structural are formed broached-tooth design respectively jointly and are formed a plurality of interior concave spaces, and above-mentioned light emitting diode is arranged at respectively in the interior concave space of broached-tooth design.Compared to away from first micro-structural of imaginary centres near first micro-structural of imaginary centres, its first sensitive surface that has has less inclination angle.In other words, be located at the inclination angle of light emitting diode of LGP both sides greater than the light-emitting diodes tube angulation of LGP central position.Variable pitch scope described herein, changes according to LGP size or design between 80 degree between 5 degree.More comprise the trend of the parallel light inlet end face of smooth light incidence section on the light inlet end face and be formed at above-mentioned first micro-structural and above-mentioned second micro-structural between, at least one light emitting diode setting is corresponding to smooth light incidence section.
The present invention more provides a kind of backlight modular structure, comprises the LGP with a plurality of units block.In other words, the light inlet end face two ends of per unit block all form a plurality of first micro-structurals and a plurality of second micro-structural, and first micro-structural of above-mentioned second micro-structural and adjacent cells block side by side in line.In addition, in another preferred embodiment, can be a large-size light-conducting plate with each LGP permutation and combination also, wherein each first micro-structural of each second micro-structural and adjacent LGP be arranged in line, is located at light inlet end face one side of this LGP again with single light-emitting diode (LED) module.In the present embodiment, between each LGP, that is the preferable light emitting diode that is provided with between second micro-structural of each LGP and adjacent first micro-structural that LGP is set, produce to reduce the dull phenomenon in zone.
Utilize backlight modular structure provided by the invention, solved the problem of local dimming effectively, improved the module centers briliancy, and can reduce the generation of light leakage phenomena, make light be used effectively, luminous efficiency is got a promotion.
Description of drawings
Fig. 1 is the schematic diagram of known backlight modular structure;
Fig. 2 simulates the bright dipping schematic diagram of this backlight modular structure for known optical;
Fig. 3 A is the exploded view of backlight modular structure of the present invention;
Fig. 3 B is the constitutional diagram of backlight modular structure of the present invention;
Fig. 4 A is the first micro-structural part schematic diagram of backlight modular structure of the present invention;
Fig. 4 B is the second micro-structural part schematic diagram of backlight modular structure of the present invention;
Fig. 4 C is located at the enforcement illustration of LGP for light-emitting diode (LED) module of the present invention;
Fig. 5 A for the present invention's first sensitive surface and second sensitive surface toward each other and comprise the enforcement illustration of a variable incidence;
Fig. 5 B for the present invention's first sensitive surface and second sensitive surface toward each other and comprise another enforcement illustration of a variable incidence;
Fig. 6 is another enforcement illustration of backlight modular structure of the present invention;
Fig. 7 is the another enforcement illustration of backlight modular structure of the present invention; And
Fig. 8 is the bright dipping schematic diagram of this backlight modular structure of optical analog of the present invention.
Drawing reference numeral
100 LGPs
110 light inlet end faces
120 imaginary centres
130 first micro-structurals
132 first sensitive surfaces
140 second micro-structurals
142 second sensitive surfaces
150 inclination angles
160 broached-tooth designs
Concave space in 170
180 unit blocks
200 light-emitting diode (LED) modules
210 light emitting diodes
220 light-emitting areas
230 circuit boards
The B brightness value
The specific embodiment
The invention provides a kind of backlight modular structure that increases its center briliancy contribution degree and the loss of minimizing light leak.The present invention includes the electronic installation that uses this backlight modular structure.In preferred embodiment, electronic installation provided by the invention is a portable computer.Yet in other different embodiment, also can be flat-paneled display screens/TV, device for mobile communication or other has the electronic installation of this backlight modular structure.In addition, the display mode of backlight modular structure of the present invention is preferably with side entering type (edge lighting) and provides backlight, and with light-emitting diode light bar (LED light bar) as backlight.Yet in other different embodiment, can also a plurality of single light emitting diodes distributions be arranged on the light inlet end face of LGP.Below promptly cooperate appended accompanying drawing to further specify mode of operation of the present invention and related embodiment.
Shown in Fig. 3 A and Fig. 3 B, the invention provides a kind of backlight modular structure and comprise LGP 100 and a plurality of light emitting diode 210.LGP 100 has light inlet end face 110 and imaginary centres 120.Form a plurality of first micro-structurals 130 and a plurality of second micro-structural 140 on the light inlet end face 110, each first micro-structural 130 and each second micro-structural 140 are located at light inlet end face 110 two ends respectively and are provided with along 110 distributions of light inlet end face.Imaginary centres 120 described herein is preferably the geometric center (geometricalcenter) of LGP 100, but also can be mass centre (center of mass) or other paracentral position of LGP internal interface.Each first micro-structural 130 has first sensitive surface 132; Each second micro-structural 140 has second sensitive surface 142.Above-mentioned first sensitive surface 132 and at least one inclination angle of above-mentioned second sensitive surface, 142 opposite tilts (shown in ginseng Fig. 4 A and Fig. 4 B) make normal separately be partial to imaginary centres 120 respectively.Shown in Fig. 4 C, the preferable imaginary centres 120 of being partial to LGP 100 respectively of the normal of the normal of first sensitive surface 132 and second sensitive surface 142.
In the present embodiment, the above-mentioned light emitting diode 210 preferable light-emitting diode (LED) modules 200 that comprise.Each light emitting diode 210 is electrically connected on the circuit board 230, and composition light-emitting diode (LED) module 200, again this light-emitting diode (LED) module 200 is located at the side ora terminalis of LGP 100, is made each light emitting diode with light-emitting area 220 210 respectively in the face of above-mentioned first sensitive surface 132 and above-mentioned second sensitive surface 142.After light-emitting diode (LED) module 200 electrically conducted, the light of each light emitting diode 210 can be injected LGP 100 through above-mentioned first sensitive surface 132 and second sensitive surface 142 from light-emitting area 220.Shown in Fig. 3 B, because each sensitive surface 132 and second sensitive surface 142 tilt towards imaginary centres 120, so the light of each light emitting diode 210 all can concentrate to imaginary centres 120, with the center briliancy that improves LGP 100 and reduce the both sides light leak.
Please also refer among the embodiment shown in Fig. 4 A and Fig. 4 B, the light-emitting area 220 of each light emitting diode 210 is preferably to fit with above-mentioned first sensitive surface 132 and above-mentioned second sensitive surface 142 respectively and is provided with.Yet in other different embodiment, the light-emitting area 220 of each light emitting diode 210 also can accompany specific or the gap of special angle not with each first sensitive surface 132 and each second sensitive surface 142, looks demand and changes.Shown in Fig. 4 A, each first micro-structural 130 of LGP 100 is common form broached-tooth designs 160 and between each sawtooth, form a plurality of in concave space 170, above-mentioned light emitting diode 210 is arranged at respectively in broached-tooth design 160 formed described these interior concave spaces 170.In like manner, shown in Fig. 4 B, each second micro-structural 140 is also formed broached-tooth design 160 and is formed a plurality of interior concave spaces 170, and each light emitting diode 210 is arranged at respectively in described these interior concave spaces 170 of broached-tooth design 160.In the present embodiment, two length of sides of concave space 170 are preferably isometric inverted V-shaped structure in each.Yet in other different embodiment, 170 liang of length of sides of interior concave space also can be long or other tool special geometry of inequilateral, as U-shaped, W shape or other structure such as given shape not.
In addition, shown in Fig. 4 A and Fig. 4 B, comprise the trend of smooth light incidence section 112 parallel light inlet end faces 110 on the light inlet end face 110 of LGP 100 in addition and be formed at first micro-structural 130 and second micro-structural 140 between, at least one light emitting diode 210 is provided with corresponding to smooth light incidence section 112.Because smooth light incidence section 112 relative both sides broached-tooth designs 160 be near the central authorities of LGP 100, but so the light summary of light emitting diode 210 towards the direction ejaculation of imaginary centres (scheming not illustrate), unlikely deviation is too many.Yet in the embodiment shown in Fig. 4 C, also smooth light incidence section 112 can be changed to broached-tooth design 160, generally speaking, present embodiment is preferably and is applied in the large-size light-conducting plate 100.Moreover among the embodiment shown in Fig. 4 A～Fig. 4 C, the inclination angle 150 of each first sensitive surface 132 is preferably the inclination angle 150 similar in appearance to each second sensitive surface 142.The definition at said inclination angle 150 is to be the inclination angle from the normal perpendicular to first sensitive surface 132 or second sensitive surface 142 to the vertical line perpendicular to light inlet end face 110 (being preferably the parallel, horizontal face).Therefore the account form at each inclination angle 150, promptly with sensitive surface as datum level, the angle at inclination angle can be different and change along with the sensitive surface angle.
Yet in the embodiment shown in Fig. 5 A and Fig. 5 B, along with backlight modular structure size difference, the inclination angle 150 of each first sensitive surface 132 or each second sensitive surface 142 also can be set at variable-angle respectively.Compared to away from first micro-structural 130 of imaginary centres 120 near first micro-structural 130 of imaginary centres 120, its first sensitive surface 132 that has has less inclination angle 150.In brief, be exactly that inclination angle 150 the closer to first sensitive surface 132 of LGP 100 sides is greater than the inclination angle 150 away from LGP 100 sides first sensitive surface 132, so that each first sensitive surface 132 or second sensitive surface, 142 deflection imaginary centres 120.According to backlight modular structure size difference (LGP 100 size differences), the variable range at inclination angle 150 is also different, generally between 5 degree are spent to 80.In addition, according to LGP 100 or other different demands of different size, can smooth light incidence section 112 be set in light inlet end face 110 rough central position, shown in Fig. 5 A.Yet in the embodiment shown in Fig. 5 B, also can not need smooth light incidence section be set, and be broached-tooth design 160 with geometry.
As shown in Figure 6, the present invention more provides a kind of backlight modular structure, comprises the LGP 100 with a plurality of units block 180.The LGP 100 of present embodiment is essentially a large-size light-conducting plate 100, and this LGP 100 is preferable to have size and equate or unequal unit block 180.In different embodiment, also can cut into a plurality of undersized LGPs 100 identical or inequality according to the unit block 180 of different size.In the present embodiment, light inlet end face 110 two ends of per unit block 180 all form a plurality of first micro-structurals 130 and a plurality of second micro-structural 140, and each second micro-structural 140 be with each first micro-structural 130 of adjacent cells block 180 side by side in line.In other words, per unit block 180 is as single LGP 100, have first micro-structural 130 of a plurality of first sensitive surfaces 132 and second micro-structural 140 of a plurality of second sensitive surfaces 142, wherein each first sensitive surface 132 and each second sensitive surface 142 at least one inclination angle 150 that tilts toward each other makes normal separately be partial to imaginary centres 120 respectively.
In embodiment as shown in Figure 6, can cut the LGP 100 of some same sizes or different size according to per unit block 180 sizes, be equipped with corresponding light emitting diode 210 or light-emitting diode (LED) module 200 again.As shown in the figure, the most close opposing each other inclination of first sensitive surface 132 on outermost second sensitive surface 142 and the adjacent unit block 180 on the per unit block 180.Be relatively arranged on per unit block 180 first sensitive surface 132 light emitting diode 210 also with the light emitting diode 210 opposing inclinations of second sensitive surface 142 that is relatively arranged on adjacent cells block 180.In addition, in the present embodiment, light emitting diode 210 preferable LGP 100 1 end side surface that are arranged at a plurality of units of tool block 180 with single light-emitting diode (LED) module 200 correspondences that comprise.Yet in other different embodiment, also can be fit to the light-emitting diode (LED) module 200 of length according to each unit block 180 configurations.About other backlight modular structure of present embodiment, please join previous embodiment, do not repeat them here.
As shown in Figure 7, the present invention provides a kind of backlight modular structure in addition, comprises a plurality of small size LGP 100 common splicing composition one large-sized LGPs, and is used with light-emitting diode (LED) module 200.In the present embodiment, each LGP 100 has a plurality of first micro-structurals 130, a plurality of second micro-structural 140, is formed at each first micro-structural 130 and each second micro-structural 140 and the imaginary centres 120 of light inlet end face 110 both sides, and wherein each first micro-structural 130 of each second micro-structural 140 and adjacent LGP 100 side by side in line.In embodiment as shown in Figure 7,100 of each LGPs, that is second micro-structural 140 of each LGP 100 and adjacent 130 of first micro-structurals that LGP 100 is set more can be provided with light emitting diode 210, produces with the phenomenon that reduces 100 zones of two LGPs dull (local damming).
Fig. 8 is with 20 lumination of light emitting diode resolution charts.As shown in the figure, learn through the computer program analog result that center brightness value B more known (Fig. 2) is promoted at least 1.4 times, luminous demonstration (square frame place) light leak of light emitting diode 210 on LGP 100 also reduces.In sum, with tilt the toward each other light emitting diode at inclination angle of both sides, each first micro-structural of the corresponding LGP of arranging in pairs or groups and the second micro-structural angle can effectively promote the center briliancy of backlight modular structure and the phenomenon of both sides light leak.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.The modification and impartial setting of making according to spirit of the present invention and principle are included in the claim.
Claims (18)
1. a backlight modular structure is characterized in that, described backlight modular structure comprises:
One LGP, have a light inlet end face and an imaginary centres, form a plurality of first micro-structurals and a plurality of second micro-structural on the described light inlet end face, each described first micro-structural and each described second micro-structural are located at the two ends of described light inlet end face respectively and are provided with along described light inlet end face distribution, wherein each described first micro-structural has one first sensitive surface, each described second micro-structural has one second sensitive surface, and described first sensitive surface and at least one inclination angle of the described second sensitive surface opposite tilt make normal separately be partial to described imaginary centres respectively; And
A plurality of light emitting diodes, each described light emitting diode has a light-emitting area respectively described relatively first sensitive surface and the described second sensitive surface setting, the light of each described light emitting diode from described light-emitting area through described first sensitive surface and the described LGP of the described second sensitive surface incident.
2. backlight modular structure as claimed in claim 1 is characterized in that, the described light-emitting area of each described light emitting diode is fitted with described first sensitive surface and described second sensitive surface respectively and is provided with.
3. backlight modular structure as claimed in claim 1, it is characterized in that, away from described first micro-structural of described imaginary centres, near described first micro-structural of described imaginary centres, described first sensitive surface that it has has less described inclination angle compared to.
4. backlight modular structure as claimed in claim 1 is characterized in that, the variable range at described inclination angle is between 5 degree are spent to 80.
5. backlight modular structure as claimed in claim 1, it is characterized in that, the trend that comprises the parallel described light inlet end face of a smooth light incidence section on the described light inlet end face is formed between described first micro-structural and described second micro-structural, and at least one light emitting diode setting is corresponding to described smooth light incidence section.
6. backlight modular structure as claimed in claim 1 is characterized in that, is formed with the trend of the parallel described light inlet end face of a smooth light incidence section between adjacent described first micro-structural, and at least one light emitting diode setting is corresponding to described smooth light incidence section.
7. a backlight modular structure is characterized in that, described backlight modular structure comprises:
One LGP, the a plurality of units block that has a light inlet end face and distribute along described light inlet end face, each described unit block has an imaginary centres, form a plurality of first micro-structurals and a plurality of second micro-structural on the part of corresponding each the described unit block of described light inputting end face and lay respectively at the two ends of described unit block, wherein each described first micro-structural has one first sensitive surface, each described second micro-structural has one second sensitive surface, and described first sensitive surface in each described unit block and at least one inclination angle of the described second sensitive surface opposite tilt make normal separately be partial to described imaginary centres respectively; Wherein, the most close opposing inclination of described first sensitive surface on outermost described second sensitive surface and the adjacent described unit block on the described unit block; And
A plurality of light emitting diodes, each described light emitting diode has a light-emitting area respectively described relatively first sensitive surface and the described second sensitive surface setting, the light of each described light emitting diode from described light-emitting area through described first sensitive surface and the described LGP of the described second sensitive surface incident.
8. backlight modular structure as claimed in claim 7 is characterized in that, the described light-emitting area of each described light emitting diode is fitted respectively at described first sensitive surface and described second sensitive surface and is provided with.
9. backlight modular structure as claimed in claim 7, it is characterized in that, away from described first micro-structural of each described imaginary centres, near described first micro-structural of described imaginary centres, described first sensitive surface that it has has less described inclination angle compared to.
10. backlight modular structure as claimed in claim 7 is characterized in that, the variable range at described inclination angle is between 5 degree are spent to 80.
11. backlight modular structure as claimed in claim 7, it is characterized in that, the trend that comprises the parallel described light inlet end face of a smooth light incidence section on the described light inlet end face of each described unit block is formed between described first micro-structural and described second micro-structural, and at least one light emitting diode setting is corresponding to described smooth light incidence section.
12. backlight modular structure as claimed in claim 7, it is characterized in that, be formed with the trend of the parallel described light inlet end face of a smooth light incidence section on the described unit block on outermost described second micro-structural and the adjacent described unit block between the most close described first micro-structural, at least one light emitting diode setting is corresponding to described smooth light incidence section.
13. a backlight modular structure is characterized in that, described backlight modular structure comprises:
A plurality of LGPs, each described LGP has a light inlet end face and an imaginary centres, each described light inlet end face is co-linear with one another and form a plurality of first micro-structurals and a plurality of second micro-structural respectively, each described first micro-structural and each described second micro-structural are located at the two ends of described light inlet end face respectively and are provided with along described light inlet end face distribution, wherein each described first micro-structural has one first sensitive surface, each described second micro-structural has one second sensitive surface, and described first sensitive surface in each described LGP and at least one inclination angle of the described second sensitive surface opposite tilt make normal separately be partial to described imaginary centres respectively; Wherein, the most close opposing inclination of described first sensitive surface on described second sensitive surface of each described LGP and the adjacent described LGP; And
A plurality of light emitting diodes, each described light emitting diode has a light-emitting area respectively described relatively first sensitive surface and the described second sensitive surface setting, the light of each described light emitting diode from described light-emitting area through described first sensitive surface and the described LGP of the described second sensitive surface incident.
14. backlight modular structure as claimed in claim 13 is characterized in that, the described light-emitting area of each described light emitting diode is fitted respectively at described first sensitive surface and described second sensitive surface and is provided with.
15. backlight modular structure as claimed in claim 13, it is characterized in that, away from described first micro-structural of each described imaginary centres, near described first micro-structural of described imaginary centres, described first sensitive surface that it has has less described inclination angle compared to.
16. backlight modular structure as claimed in claim 13 is characterized in that, the variable range at described inclination angle is between 5 degree are spent to 80.
17. backlight modular structure as claimed in claim 13, it is characterized in that, the trend that comprises the parallel described light inlet end face of a smooth light incidence section on each described light inlet end face is formed between described first micro-structural and described second micro-structural, and at least one light emitting diode setting is corresponding to described smooth light incidence section.
18. backlight modular structure as claimed in claim 13, it is characterized in that, be formed with the trend of the parallel described light inlet end face of a smooth light incidence section on the described LGP on outermost described second micro-structural and the adjacent described LGP between the most close described first micro-structural, at least one light emitting diode setting is corresponding to described smooth light incidence section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259412A CN101737680A (en) | 2009-12-18 | 2009-12-18 | Backlight module structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910259412A CN101737680A (en) | 2009-12-18 | 2009-12-18 | Backlight module structure |
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| CN101737680A true CN101737680A (en) | 2010-06-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818197A (en) * | 2012-08-28 | 2012-12-12 | 京东方科技集团股份有限公司 | Back light unit and display device comprising same |
| CN103201783A (en) * | 2010-11-10 | 2013-07-10 | Nec卡西欧移动通信株式会社 | Electronic device |
| CN103574401A (en) * | 2012-08-07 | 2014-02-12 | 三星显示有限公司 | Backlight device and liquid display device including same |
-
2009
- 2009-12-18 CN CN200910259412A patent/CN101737680A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103201783A (en) * | 2010-11-10 | 2013-07-10 | Nec卡西欧移动通信株式会社 | Electronic device |
| CN103201783B (en) * | 2010-11-10 | 2016-08-10 | 日本电气株式会社 | Electronic equipment |
| US9459003B2 (en) | 2010-11-10 | 2016-10-04 | Nec Corporation | Electronic equipment |
| CN103574401A (en) * | 2012-08-07 | 2014-02-12 | 三星显示有限公司 | Backlight device and liquid display device including same |
| CN102818197A (en) * | 2012-08-28 | 2012-12-12 | 京东方科技集团股份有限公司 | Back light unit and display device comprising same |
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Open date: 20100616 |