CN101984281B - Zonal light-emitting backlight module - Google Patents
Zonal light-emitting backlight module Download PDFInfo
- Publication number
- CN101984281B CN101984281B CN201010543342XA CN201010543342A CN101984281B CN 101984281 B CN101984281 B CN 101984281B CN 201010543342X A CN201010543342X A CN 201010543342XA CN 201010543342 A CN201010543342 A CN 201010543342A CN 101984281 B CN101984281 B CN 101984281B
- Authority
- CN
- China
- Prior art keywords
- time
- structural sheet
- lgp
- light belt
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a zonal light-emitting backlight module, which comprises a first light guide plate and a second light guide plate, wherein the bottoms of the two light guide plates respectively comprise a first lower structural layer and a second lower structural layer. The first lower structural layer comprises a first main light-emitting band and a first minor light-emitting band, wherein the first main light-emitting band is located between the first minor light-emitting band and a side end of the first light guide plate. The second lower structural layer comprises a second main light-emitting band and a second minor light-emitting band, wherein the second main light-emitting band is located between the second minor light-emitting band and a side end of the second light guide plate. The first lower structural layer exposes the second main light-emitting band in a projection area of the second lower structural layer, and the second main light-emitting band is at least partially overlapped with the second minor light-emitting band.
Description
Technical field
The present invention relates to a kind of backlight module, particularly a kind of backlight module that comprises a plurality of LGPs and be provided with the divisional light emission of microstructured layers in LGP.
Background technology
Display panel and use the flat display apparatus of display panel has become the main flow of all kinds of display device.Wherein, Panel of LCD is apparent of present flat display apparatus, and is used in the electronic products such as display screen of flat-plate type monitor, mobile phone and digital camera of flat-surface television, personal computer and the laptop computer of various panel display screen, family expenses in large quantities.
Backlight module (Back Light Module) is one of vital part in the present panel of LCD.Because liquid crystal itself is not luminous, so the function of backlight module is brightness that provides sufficient and the light source that is evenly distributed, so that panel of LCD show image normally.Backlight module adopts the monolithic LGP for the guiding light that light source produced in the past, and wherein the briliancy that produced of this LGP zones of different is identical in fact.Yet for the briliancy light and shade that can produce in various degree in the zones of different of backlight module changes, backlight module certainly will need be made adjustment on LGP (Light Guide Plate) structure.
Shown in Figure 1 is the synoptic diagram of prior art backlight module 10.Prior art backlight module 10 comprises leaded light component 20 and a plurality of luminescence unit 40, and wherein those luminescence units 40 are arranged at the side of leaded light component 20 and emit beam to this leaded light component 20.As shown in Figure 1, leaded light component 20 comprises a plurality of LGPs 30, and wherein each luminescence unit 40 is arranged at a side of LGP 30 and penetrates light to this LGP 30.In addition, the bottom surface of LGP 30 is equipped with microstructured layers (figure do not show), for destroy light in leaded light component 20 total reflection and make it from LGP 30 surperficial bright dippings.
Because each LGP 30 is corresponding to the zones of different of leaded light component 20, thus prior art backlight module 10 individually driven for emitting lights unit 40 generation light so that this light respectively in different LGP 30 bright dippings.Thus, prior art backlight module 10 can provide the audience luminous zone visual effect that subregion is lighted.
The light that each luminescence unit 40 is produced is received by 30 of this correspondence LGPs in fact fully, and prior art backlight module 10 therefore shown in Figure 1 can have the visual effect that the luminous zone subregion is lighted because of driven for emitting lights unit 40 respectively.Yet part light will march to adjacent LGP 30 unavoidablely and in the microstructured layers bright dipping of these adjacent LGP 30 bottom surfaces, therefore give the visual effect of audience's light leak (Light Leakage).The leaded light component 20 of prior art backlight module 10 is assembled by a plurality of LGP 30, so the briliancy of light and colourity will produce drop because of the slit of passing through 30 of LGPs.Thus, the audience can find the slit of 30 of LGPs easily because of the drop of above-mentioned briliancy and colourity.In addition, the assembling process of the leaded light component of assembly unit trouble and aligning accuracy require very high, even assembling well also might cause skew because of the external force influence, can't reach the optical effect of expection.
Because the visual effect of above-mentioned light leak and briliancy and the colourity drop that light produces because of the slit are with having influence on the impression of audience to image.Therefore how when subregion is lighted the luminous zone, to reduce light leak and avoid letting the audience discover the slit of LGP, real is one of important topic of present backlight module.
Summary of the invention
Technical matters to be solved by this invention provides a kind of backlight module of divisional light emission, and the microstructured layers that sees through a plurality of LGPs and LGP surface destroys the total reflection of light that light source produces and lights the visual effect of luminous zone so that audience's subregion to be provided.
Another object of the present invention is to provide a kind of backlight module of divisional light emission,, in the visual effect that provides the luminous zone subregion to light, lower the degree of the drop of briliancy and colourity by the microstructure that forms on the LGP surface.
To achieve these goals, the invention provides a kind of backlight module of divisional light emission, comprise first LGP, second LGP, first light sources and secondary light source group, wherein second LGP is superimposed in first LGP.A plurality of light sources that first light sources is comprised are arranged at the side of first LGP and penetrate light to first LGP.Likewise, a plurality of light sources of being comprised of secondary light source group are arranged at the side of second LGP and penetrate light to second LGP.
First LGP comprises structural sheet and first time structural sheet on first, is formed at the relative both sides of first LGP respectively.Structural sheet comprises a plurality of corner posts on first, and wherein the bearing of trend of those corner posts is parallel in fact with first light sources light ejaculation direction.First time structural sheet comprises first master and goes out light belt and go out light belt for the first time, has the microstructure aperture opening ratio that reaches greater than 60% less than 60% respectively.First main go out light belt and is going out between the light belt and first light sources for the first time, with the light total reflection that destroys first light sources and those light structural sheet on first is advanced.
Second LGP comprises structural sheet and second time structural sheet on second, is formed at the relative both sides of second LGP respectively, wherein on second structural level to first time structural sheet of first LGP.Structural sheet comprises a plurality of corner posts on second, and wherein the bearing of trend of those corner posts is parallel in fact with secondary light source group light ejaculation direction.Second time structural sheet comprises second master and goes out light belt and go out light belt for the second time, has the microstructure aperture opening ratio that reaches greater than 60% less than 60% respectively.Second main go out light belt and is going out between light belt and the secondary light source group for the second time, with the total reflection that destroys secondary light source group light and those light structural sheet and first LGP on second are advanced.
In addition, first time structural sheet exposes second in the view field of second time structural sheet and mainly goes out light belt and part and to go out light belt for the second time overlapping.In addition, first main go out light belt and the second main view field that goes out light belt part can be overlapping at least.Thus, light source sees through first and mainly goes out light belt and second and mainly go out bright dipping zone that light belt produced and overlap to help the module of boundary gelatinization in fact and avoid forming tangible border blanking bar.
Technique effect of the present invention is: the present invention is stacked for a plurality of LGPs, utilizes the bottom pattern of a plurality of LGPs to reach the effect that (local dimming) lighted in the pointolite part.Backlight module of the present invention; The microstructured layers that sees through a plurality of LGPs and LGP surface destroys the total reflection of light that light source produces and lights the visual effect of luminous zone so that audience's subregion to be provided; Simultaneously; Through the microstructure that forms on the LGP surface, in the visual effect that provides the luminous zone subregion to light, lowered the degree of the drop of briliancy and colourity.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram of prior art backlight module;
Fig. 2 is the explosive view of backlight module of the present invention;
Fig. 3 is the sectional view of structural sheet on first;
Fig. 4 is the top view of first LGP shown in Figure 2 and second bottom surface of light guide plate;
Fig. 5 is the alternate embodiment top view of first LGP shown in Figure 4 and second LGP;
Fig. 6 is the alternate embodiment explosive view of backlight module shown in Figure 2;
Fig. 7 A, Fig. 7 B, Fig. 7 C are respectively the top view of first time structural sheet shown in Figure 6, second time structural sheet and the 3rd time structural sheet;
Fig. 8 A, Fig. 8 B, Fig. 8 C are respectively the alternate embodiment top view of first time structural sheet, second time structural sheet and the 3rd time structural sheet shown in Fig. 7 A, Fig. 7 B, Fig. 7 C.
Wherein, Reference numeral
100 backlight modules
110 reflectors
200 first LGPs
Structural sheet on 210 first
211 first corner posts
220 first times structural sheets
221 first masters go out light belt
222 go out light belt for the first time
223 first microstructured area
224 second microstructured area
225 first sides
300 first light sources
310 first light sources
400 second LGPs
Structural sheet on 410 second
411 second corner posts
420 second times structural sheets
421 second masters go out light belt
422 go out light belt for the second time
423 the 3rd microstructured area
424 the 4th microstructured area
425 first cushion out light belt
426 second sides
500 secondary light source groups
510 secondary light sources
600 first diffusion sheets
610 second diffusion sheets
700 the 3rd LGPs
Structural sheet on 710 the 3rd
711 triangular prisms
720 the 3rd times structural sheets
721 the 3rd masters go out light belt
722 go out light belt for the third time
723 second cushion out light belt
724 the 3rd sides
725 the 5th microstructured area
726 the 6th microstructured area
800 the 3rd light sources
810 the 3rd light sources
900 cushion out light belt
A light
B, the C angle
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
The present invention relates to a kind of backlight module, particularly a kind ofly comprise the backlight module that a plurality of stacked LGPs and LGP are provided with microstructured layers.Backlight module of the present invention is by using microstructured layers on a plurality of LGPs to produce a plurality of light-emitting blocks and by the briliancy and the drop of colourity that reduce between light-emitting blocks.
Shown in Figure 2 for the explosive view of backlight module 100 of the present invention.As shown in Figure 2; Backlight module 100 can comprise reflector 110, first LGP 200, first light sources 300, second LGP 400, secondary light source group 500, and wherein first light sources 300 and secondary light source group 500 are arranged at the side of first LGP 200 and second LGP 400 respectively.
In addition, as shown in Figure 2, backlight module 100 of the present invention further can comprise first diffusion sheet 600, is arranged between first LGP 200 and second LGP 400 to avoid the friction between first LGP 200 and second LGP 400.In addition, first diffusion sheet 600 also can be handled the light that is penetrated from second LGP 400 and relax the optics flaw that second LGP 400 is caused because of surperficial tolerance, inner structure tolerance or environmental impact (like particle contamination) by this through its inner structure or material.In other words, the optics flaw that produces of the on business poor or environmental impact of the friction that is used to avoid LGP of first diffusion sheet 600 of present embodiment and compensation LGP.
In the embodiment shown in Figure 2; First light sources 300 and secondary light source group 500 comprise a plurality of first light sources 310 and a plurality of secondary light source 510 respectively, and wherein first light source 310 of present embodiment and secondary light source 510 can be light emitting diode (Light Emitting Diode).The different parts of first LGP 200 is divided into a plurality of luminous zones by those first light sources 310, wherein the first corresponding different light source 310 of each luminous zone.Therefore above-mentioned first light source 310 as required light the luminous zone and optionally lighted, to provide corresponding luminous zone needed light.
Likewise, the different parts of second LGP 400 is divided into a plurality of luminous zones by those secondary light sources 510, wherein the also corresponding different secondary light source 510 in the luminous zone of each second LGP 400.Therefore the also luminous zone of light and optionally being lighted as required of secondary light source 510 is to provide corresponding luminous zone needed light.
As shown in Figure 2, the surface of first LGP 200 and second LGP 400 can be respectively equipped with on first structural sheet 410 on the structural sheet 210 and second.On first structural sheet 210 be positioned at first LGP, 200 relative second LGPs 400 the surface and on second structural sheet 410 be positioned at the surface of second LGP 400 towards first LGP 200.Structural sheet 210 can comprise a plurality of first corner posts 211 on first, wherein those first corner posts 211 first light source 310 is set by first LGP 200 a side roughly straight line extend to another side that first light source 310 is set.This shows that it is parallel in fact that the bearing of trend of first corner post 211 will penetrate direction in the light of first light sources 300.Thus; The bearing of trend of light first corner post 211 capable of using that first light sources 300 is produced is roughly advanced to first LGP, 200 other ends point-blank; And can not advance the block control that helps subregion to light to first LGP, 200 other ends with significantly dispersing.
Likewise, structural sheet 410 also comprises a plurality of second corner posts 411 on second, wherein second corner post 411 secondary light source group 500 is set by second LGP 400 side roughly straight line extend to another side that secondary light source group 500 is set.Therefore the bearing of trend of second corner post 411 will be parallel to the light ejaculation direction of secondary light source group 500.Thus; The bearing of trend of light second corner post 411 capable of using that secondary light source group 500 is produced is roughly advanced to second LGP, 400 other ends point-blank; And can not advance the block control that helps subregion to light to second LGP, 400 other ends with significantly dispersing.Thus, the bearing of trend of present embodiment first corner post 211 and second corner post 411 roughly is parallel to each other, but is not limited thereto; Therefore in different embodiment, the bearing of trend of first corner post 211 and second corner post 411 also can intersect according to the direct of travel of light and have an angle.
Please be at this simultaneously with reference to the explosive view of Fig. 2 and the sectional view of first LGP 200 shown in Figure 3.In Fig. 2 and embodiment shown in Figure 3, when light A got into first LGP 200 and contacts first corner post 211, first corner post 211 will change the travel angle of light so that it can be more to advance near the direction of vertical first LGP, 200 exiting surfaces.Thus, more light can receive from first LGP 200 and by audience's eyes.This shows that first corner post 211 also has the effect of bright enhancement film except the light that guides first light source 310 and sent.
In the present embodiment, first corner post 211 has different drift angle, height or width respectively, but is not limited thereto; In different embodiment, the direction that first corner post 211 also can be advanced according to light, position or other condition of first light sources 300 have identical drift angle, height or width.In addition, first corner post, the 211 preferable drift angles of present embodiment with 90 °, but be not limited thereto; In different embodiment, the drift angle of first corner post 211 also can be according to the moving direction of light or other requirement and between 80 ° to 100 °.
As shown in Figure 3, adjacent first corner post 211 of present embodiment has identical included angle B, C, but is not limited thereto.In different embodiment; 211 sides that can have different degree of tilt of adjacent first corner post; Just have different angle, leave first LGP 200 in contact first corner post 211 backs with the direction of more approaching vertical first LGP, 200 exiting surfaces more effectively to make the light of advancing with different directions.In addition, the characteristic of second corner post 411 shown in Figure 2 and structure essence are same as first corner post 211, therefore do not add at this and give unnecessary details.
Shown in Figure 4 is the top view of second time structural sheet 420 of first time structural sheet 220 and second LGP 400 of first LGP 200 shown in Figure 2.As shown in Figure 4, structural sheet 210, the first LGPs 200 bottom surfaces are provided with and are used to destroy the first time structural sheet 220 of light in 200 inner total reflections of first LGP on relative first, and wherein first light source 310 launches light in first LGP 200.Above-mentioned light will be advanced with the total reflection mode in first LGP 200 and will be contacted with structural sheet 220 first time, and wherein the total reflection of those light will structural sheet 210 ejaculations on first under the destruction of first time structural sheet 220.
Likewise, structural sheet 410, the second LGPs 400 bottom surfaces are provided with the second time structural sheet 420 that is used to destroy light structure and total reflection thereof on relative second, and wherein secondary light source 510 launches light in second LGP 400.Above-mentioned light will be advanced with the total reflection mode in second LGP 400 and will be contacted with structural sheet 420 second time, and wherein those light will destroy back structural sheet 410 surface ejaculations on second at second time structural sheet 420.
As shown in Figure 4, first time structural sheet 220 of first LGP 200 comprises twice first master and goes out light belt 221 and go out light belt 222 for the first time.As shown in Figure 4; Go out for the first time light belt 222 and can be positioned at the position of first LGP, 200 bottom surfaces central authorities in fact and distribute along the bearing of trend of first side 225 of first LGP 200, wherein twice first are main goes out light belt 221 and extends along the both sides that go out for the first time light belt 222.In other words, first main goes out light belt 221 and goes out the bearing of trend of light belt 222 for the first time parallel in fact, and first mainly goes out light belt 221 and going out between the light belt 222 and first side 225 for the first time.What must explain is that first side 225 is preferably the long limit of LGP 200, to reach the good optical effect.
In the present embodiment, the first main microstructure aperture opening ratio (Aperture Ratio) that goes out light belt 221 and go out light belt 222 for the first time is respectively less than 60% and greater than 60%.Above-mentioned microstructure aperture opening ratio is meant the distribution proportion of the microstructure of unit area, and for instance, if be covered with microstructure entirely, the microstructure aperture opening ratio at this place is 100% on the unit area.The microstructure aperture opening ratio just can let light source cast out fully, more efficiently and reduce the ratio of light sources consume on optical element.Therefore under identical condition, the microstructure aperture opening ratio is high more, and the light of transmission is many more.
In addition, first of present embodiment time structural sheet 220 can comprise the microstructure that strip print structure, point-like print structure, strip projection, point-like projection, recessed of strip, recessed of point-like or its combination etc. are used for reflection ray.In addition, dots structure can comprise circle, ellipse or other similar shape.First master of present embodiment goes out light belt 221 and goes out light belt 222 for the first time to be the point-like print structure, but is not limited thereto.In different embodiment, first main go out light belt 221 and go out light belt 222 for the first time can be according to the combination of the suitable microstructure of the luminous intensity selectivity employing of the distribution of luminous zone and the area and first light sources 300.
In the embodiment shown in fig. 4, first main go out light belt 221 and will destroy the total reflection of light in first LGP 200 of partly being penetrated from a plurality of first light sources 310.In other words, part light will continue in first LGP 200, to advance and contact and go out for the first time light belt 222, and wherein those light will be gone out that light belt 222 destroys for the first time and penetrate from the end face of first LGP, 200 relative first time structural sheet 220.
As shown in Figure 4, second time structural sheet 420 of second LGP 400 comprises twice second master and goes out light belt 421 and go out light belt 422 for the second time, and wherein those second masters go out light belt 421 respectively along going out for the second time light belt 422 relative two second sides, 426 distributions.As shown in Figure 4, first side 225 of first LGP 200 is parallel to second side 426 of second LGP 400.In the present embodiment, the second main microstructure aperture opening ratio that goes out light belt 421 and go out light belt 422 for the second time is respectively less than 60% and greater than 60%.
Going out light belt 422 second time shown in Figure 4 is positioned at the position of second LGP, 400 bottom surfaces central authorities in fact and distributes along second side, 426 bearing of trends of second LGP 400.In addition, twice second are led light belt 421 and can be distributed in the both sides that go out light belt 422 for the second time along second side 426.In other words, second main goes out light belt 421 and goes out the bearing of trend of light belt 422 for the second time parallel in fact, and second mainly goes out light belt 421 and going out between the light belt 422 and second side 426 for the second time.What must explain is that second side 426 is preferably the long limit of LGP 400, to reach the good optical effect.
510 of a plurality of secondary light sources are can be arranged at second side 426 of second LGP 400 and to second LGP 400 emission light, are destroyed and finally penetrate from the end face of second LGP, 400 relative second time structural sheet 420 by the second main microstructure that goes out light belt 421 and go out light belt 422 for the second time after when wherein above-mentioned light will carry out total reflection in second LGP 400.
Likewise, second master of present embodiment goes out light belt 421 and goes out light belt 422 for the second time to be respectively the point-like print structure, but is not limited thereto.In different embodiment, second main go out light belt 421 and goes out the combination that light belt 422 can be used for the microstructure of reflection ray according to recessed of the luminous intensity selectivity employing strip print structure of the distribution of luminous zone and the area and first light sources 300, point-like print structure, strip projection, point-like projection, recessed of strip or point-like etc. for the second time.In addition, dots structure can comprise circle, ellipse or other similar shape.In addition, in the embodiment shown in fig. 4, the area of first time structural sheet 220 can be less than the area of second time structural sheet 420.
Please be at this simultaneously with reference to explosive view shown in Figure 2 and top view shown in Figure 4.In Fig. 2 and embodiment shown in Figure 4, first time structural sheet 220 area is less than second time structural sheet 420 area.In addition; The view field of the view field of first LGP, 200 integral body and second LGP, 400 integral body is overlapping; First time structural sheet 220 exposes second in the view field of second time structural sheet 420 and mainly goes out light belt 421, and first time structural sheet 220 at least part with to go out light belt 422 for the second time overlapping.
Preferably, go out light belt 222 for the first time and be overlapped in the area that goes out 422, the first times structural sheets 220 of light belt for the second time goes out light belt 422 in fact greater than the second time area in fact in the view field of second time structural sheet 420.What must explain is; First main to go out light belt 221 be the zone of the main emergent of first LGP 200, and second main to go out light belt 421 be the zone of the main emergent of second LGP 400, and the first main view field that goes out light belt 221 and the second main view field that goes out light belt 421 can be overlapping slightly; That is to say; The area of first time structural sheet 220 is in fact greater than the area that goes out for the second time light belt 422, and the above-mentioned overlapping module of boundary gelatinization that helps avoids forming tangible border blanking bar.Therefore first main go out light belt 221 and second main go out light belt 421 can be by the total reflection that destroys light that corresponding light source produces so that those light are finally in the diverse location bright dipping of first LGP 200.In other words, backlight module of the present invention 100 capable of using first main go out light belt 221 and second main go out the difference in 421 view fields of light belt and control first light source 310 and secondary light source 510 further 200 bright dippings of control first LGPs the position and reach the effect that the luminous zone subregion is lighted.
In addition, in order to reach preferable optical effect, go out light belt 222 for the first time, satisfy second and mainly go out light belt 421 in fact between secondary light source group 500 and go out light belt 222 for the first time between the view field on second time structural sheet 420 less than going out for the second time light belt 422.
In addition, at this please once more with reference to explosive view shown in Figure 2 and top view shown in Figure 4.As shown in Figure 4, the distance between second time structural sheet 420 and the secondary light source 510 is less than the distance between the first time structural sheet 220 and first light source 310.Therefore the decline of light in second time structural sheet 420 is less, also the therefore brightness that produced greater than first LGP 200 of the brightness that produced of second LGP 400.For this reason; The preferable brightness of employed first light source of present embodiment 310 brightness greater than secondary light source 510; For example the luminous intensity of first light sources 300 is greater than the luminous intensity of secondary light source group 500, to compensate 400 differences that produce on the luminance efficiency of above-mentioned first LGP 200 and second LGP.
Shown in Figure 5 is the alternate embodiment top view of first LGP 200 shown in Figure 4 and second LGP 400.As shown in Figure 5, first master goes out light belt 221 and comprises first microstructured area 223 and second microstructured area 224, and wherein second microstructured area 224 goes out between the light belt 222 between first microstructured area 223 and the first time.In addition, the microstructure aperture opening ratio of first microstructured area 223 is less than the microstructure aperture opening ratio of second microstructured area 224.Thus, the microstructure aperture opening ratio of first time structural sheet 220 by go out for the first time light belt 222 towards first side 225 to distribute to thin mode by close.
In addition, in embodiment shown in Figure 5, second time structural sheet 420 also comprises the 3rd microstructured area 423 and the 4th microstructured area 424, and wherein the 4th microstructured area 424 goes out between the light belt 422 between the 3rd microstructured area 423 and the second time.In addition, the microstructure aperture opening ratio of the 3rd microstructured area 423 is less than the microstructure aperture opening ratio of the 4th microstructured area 424.Thus, the microstructure aperture opening ratio of second time structural sheet 420 by go out for the second time light belt 422 towards second side 426 to distribute to thin mode by close.
In the embodiment shown in fig. 5; The microstructure aperture opening ratio distributes to close mode by dredging; The distribution proportion of the microstructure of representation unit area is more and more big, and the pattern of adjustment microstructure capable of using, size, distribution range or distribution density wait adjusts its density situation, and visual actual demand is adjusted.For instance, the microstructure aperture opening ratio is dredged and can be adopted pattern dimension the same to close distribution, and distribution density is but more and more big; Or the center of pattern distributes equally, and the size of pattern is but more and more big; Or pattern is more and more little, and number is but more and more many, becomes more and more littler but more and more closeer, more than only be for example, can adjust according to actual demand.
In Fig. 4 and embodiment shown in Figure 5; In order to have preferable light extraction efficiency; The area that for the first time goes out light belt 222 is less than 30% of first LGP, 200 base areas, and the area that goes out light belt 422 for the second time between second LGP, 400 base areas 30% and 90% between, but be not limited thereto.In different embodiments of the invention, go out for the first time between light belt 222 and first LGP, 200 base areas and go out the ratio that also can have other between light belt 422 and first LGP, 200 base areas second time.
Shown in Figure 6 is the alternate embodiment explosive view of backlight module 100 shown in Figure 2.The backlight module 100 of present embodiment further can comprise the 3rd LGP 700, the 3rd light sources 800 and second diffusion sheet 610, and wherein second diffusion sheet 610 is provided with between second LGP 400 and the 3rd LGP 700.A plurality of the 3rd light sources 810 that the 3rd light sources 800 is comprised are arranged at relative two the 3rd sides 724 (referring to Fig. 7 C) of the 3rd LGP 700 respectively and penetrate light to the 3rd LGP 700.As shown in Figure 6; The 3rd LGP 700 is superimposed in second LGP 400 and in the face of second time structural sheet 420 (referring to Fig. 4), wherein the 3rd LGP 700 can comprise in the face of second LGP 400 the 3rd on the structural sheet 710 and the 3rd time structural sheet 720 (referring to Fig. 7 C) of second LGP 400 dorsad.
As shown in Figure 6, structural sheet 710 can comprise a plurality of triangular prisms 711 on the 3rd, and wherein triangular prism 711 is from extending to the 3rd light sources 810 of a relative end point-blank of the 3rd light sources 810 is set.In the present embodiment, the substance characteristics of structural sheet 710 and structure are same as on first the substance characteristics of structural sheet 410 and structure essence on the structural sheet 210 and second in fact on the 3rd, do not give unnecessary details so do not add at this.
Fig. 7 A, Fig. 7 B, Fig. 7 C are depicted as the top view of first time structural sheet shown in Figure 6 220, second time structural sheet 420 and the 3rd time structural sheet 720.Shown in Fig. 7 A; First time structural sheet 220 comprises twice first master and goes out light belt 221 and go out light belt 222 for the first time; Wherein twice first are led light belt 221 and are formed at the both sides that go out light belt 222 for the first time respectively, for receiving and destroying the total reflection of first light source 310 light that produces and make finally structural sheet (figure does not show) bright dipping on first of those light.Second time structural sheet 420 shown in Fig. 7 B comprises twice second master and goes out light belt 421 and go out light belt 422 for the second time; Wherein twice second are main goes out light belt 421 and is formed at the both sides that go out light belt 422 for the second time respectively, for receive and destroy the light that secondary light source 510 produced and make those light finally on second structural sheet 410 (figure does not show) bright dipping and first time structural sheet 220 to first LGP, 200 bottom surfaces move.
Likewise, shown in Fig. 7 C, the 3rd time structural sheet 720 comprises two roads the 3rd master and goes out light belt 721 and go out light belt 722 for the third time, and wherein the 3rd master goes out light belt 721 724 distributions of the 3rd side along the 3rd LGP 700.In addition, first side 225, second side 426 and the 3rd side 724 of present embodiment are parallel to each other in fact and have overlapped projected area.In addition, the 3rd master goes out light belt 721 and goes out light belt for the third time to have the microstructure aperture opening ratio that reaches greater than 60% less than 60% respectively.Go out light belt 722 for the third time and mainly go out light belt 721 and distribute along the 3rd, wherein the 3rd mainly goes out light belt 721 and is going out for the third time between light belt 722 and the 3rd side 724.
In addition, the 3rd shown in Fig. 7 C be main to be gone out light belt 721 and further can comprise the 5th microstructured area 725 and the 6th microstructured area 726, and wherein the 6th microstructured area 726 is between the 5th microstructured area 725 and go out for the third time between the light belt 722.The microstructure aperture opening ratio of the 5th microstructured area 725 is less than the microstructure aperture opening ratio of the 6th microstructured area 726.Thus, the microstructure aperture opening ratio of the 3rd time structural sheet 720 by go out for the third time light belt 722 to the 3rd side 724 to distribute to the mode of dredging by close.
Shown in Fig. 7 C; Twice the 3rd are main to be gone out light belt 721 and is arranged at respectively and goes out light belt 722 both sides for the third time, for receive and destroy the total reflection of the 3rd light sources 810 light that produces and make those light finally on the 3rd structural sheet 710 (scheming not show) bright dipping and second time structural sheet 420 to second LGP, 400 bottom surfaces move.In addition, first main go out light belt 221, go out light belt 222, second for the first time and mainly go out light belt 421, go out light belt the 422, the 3rd for the second time and mainly go out light belt 721, go out light belt 722 for the third time and extend along first side 225 of first LGP 200.In other words, the bearing of trend of above-mentioned microstructured layers is parallel to each other in fact.
In the embodiment shown in Fig. 7 A, Fig. 7 B, Fig. 7 C, first LGP 200, second LGP 400 and the 3rd LGP 700 can have area identical in fact and view field is overlapping.The view field of first time structural sheet 220 part at least is overlapping with the view field that goes out for the second time light belt 422, and therefore second mainly goes out light belt 421 and will be exposed to outside the view field of first time structural sheet 220.Again, first time structural sheet 220 and second time structural sheet 420 expose the 3rd in the view field of the 3rd time structural sheet 720 and mainly go out light belt 721.
In addition; Preferably; The 3rd main goes out light belt 721 and the second main view field that goes out light belt 421 overlaps in fact at least; Therefore the 3rd mainly goes out light belt 721 and also overlap in fact at least in the second main bright dipping zone that goes out light belt 421, to help the module of boundary gelatinization and avoid forming tangible border blanking bar.That is to say, go out for the second time light belt 422 in the view field of the 3rd time structural sheet 720 in fact with to go out light belt 722 for the third time overlapping, wherein the area of second time structural sheet 420 goes out the area of light belt 722 in fact for the third time greater than this.Therefore the 3rd mainly goes out light belt 721 and likewise also will be exposed to outside the view field of second time structural sheet 420; In other words, first main goes out that light belt 221, second is main to go out light belt 421 and the 3rd main view field that goes out light belt 721 does not overlap in fact mutually, and therefore first mainly goes out that light belt 221, second is main to go out light belt 421 and overlap in the 3rd main bright dipping zone that goes out light belt 721.In addition, the 3rd main goes out light belt 721 in fact between the 3rd light sources 800 and go out light belt 422 for the second time between the view field on the 3rd time structural sheet 720.Thus; Backlight module 100 above-mentioned masters capable of using of the present invention go out light belt 221,421 and 721 and produce light at view field's locational difference control corresponding light source, for those main go out light belt 221,421 and 721 after receiving light respectively in the diverse location bright dipping of corresponding LGP.
In addition; In the embodiment shown in Fig. 7 A, Fig. 7 B, Fig. 7 C; In order to reach optical effect preferably; Go out for the first time the area of light belt 222 preferable less than first LGP, 200 base areas 25%, go out for the second time the area of light belt 422 preferable between second LGP, 400 base areas 25% to 70% between and go out for the third time the area of light belt 722 preferable between the 3rd LGP 700 base areas 70% to 90% between, but be not limited thereto.In different embodiments of the invention, above-mentioned time go out the number percent that light belt 222,422,722 occupies corresponding LGP 200,400,700 base areas can be different.In other words, inferiorly go out light belt 222,422,722 and can adjust to some extent with the ratio of corresponding LGP 200,400,700 base areas.
In addition, in the embodiment shown in Fig. 7 A, Fig. 7 B, Fig. 7 C, go out the area that light belt 222 occupies first LGP, 200 bottom surfaces 5% for the first time; For the second time go out light belt 422 and occupy the area of second LGP, 400 bottom surfaces 50% and go out the area that light belt 722 occupies the 3rd LGP 700 bottom surfaces 80% for the third time, but be not limited thereto; In different embodiment, backlight module 100 alternatives of the present invention come the selectivity adjustment time to go out the area that light belt occupies corresponding LGP according to the conditions such as luminous intensity of the area of luminous zone, light source.
Fig. 8 A, Fig. 8 B, Fig. 8 C are depicted as shown in Fig. 7 A, Fig. 7 B, Fig. 7 C alternate embodiment top view of first time structural sheet 220, second time structural sheet 420 and the 3rd time structural sheet 720, and second LGP 400 of Fig. 8 A, Fig. 8 B, Fig. 8 C and 700 stacks of the 3rd LGP are to replace second LGP 400 of Fig. 7 A, Fig. 7 B, Fig. 7 C.In the present embodiment, first of first time structural sheet 220 main goes out light belt 221 and goes out light belt 222 for the first time to be same as in fact that first shown in Fig. 7 A is main to be gone out light belt 221 and go out light belt 222 for the first time, therefore do not add at this and gives unnecessary details.Yet; Second side 426 one of them and the 3rd light sources 800 that the secondary light source group 500 of present embodiment only is arranged at second LGP 400 be arranged at the 3rd LGP 700 the 3rd side 724 one of them, wherein the vertical projection area of secondary light source group 500 and the 3rd light sources 800 is positioned at the both sides of first LGP 200.
Shown in Fig. 8 B, secondary light source group 500 is arranged at second side 426 of second LGP 400.Second master goes out light belt 421 is formed at second LGP 400 along second side 426 bottom surface.Going out for the second time 422 of light belts is to go out the bottom surface that light belt 421 is arranged at second LGP 400 along second master.In addition, second time structural sheet 420 of present embodiment further comprises first and cushions out light belt 425, and the microstructure aperture opening ratio that it has less than 60% is arranged at and goes out for the second time the main side that goes out light belt 421 of light belt 422 relative second.In the present embodiment; The light that exhausted most secondary light source group 500 is produced will be gone out light belt 421 and go out light belt 422 for the second time to destroy bright dippings by second master; Wherein first cushion out light belt 425 and be used to relax remaining light bright dipping and distribute, to avoid producing the border visual effect that the briliancy fault throw produces.
Shown in Fig. 8 B, second of present embodiment main go out light belt 421 and first and cushions out light belt 425 and have different microstructure aperture opening ratio, and first cushions out light belt 425 aperture opening ratios being closely to distribute to thin mode away from secondary light source group 500 directions.
Likewise, shown in Fig. 8 C, the 3rd light sources 800 is arranged at the 3rd side 724 of the 3rd LGP 700.The 3rd master goes out light belt 721 is formed at the 3rd LGP 700 along the 3rd side 724 bottom surface.Going out 722 of light belts for the third time is to go out the bottom surface that light belt 721 is arranged at the 3rd LGP 700 along the 3rd master.In addition, the 3rd time structural sheet 720 of present embodiment further can comprise second and cushion out light belt 723, and the microstructure aperture opening ratio that it has less than 60% is arranged at and goes out the main side that goes out light belt 721 of light belt 722 the relative the 3rd for the third time.Likewise second cushion out light belt 725 and be used to relax remaining light bright dipping and distribute, to avoid producing the border visual effect that the briliancy fault throw produces; Second cushions out light belt 725 aperture opening ratios being closely to distribute to thin mode away from the 3rd light sources 800 directions.Shown in Fig. 8 A, Fig. 8 B, Fig. 8 C, the projected area essence of the 3rd time structural sheet 720 is between to the 3rd side 724 that should the 3rd light sources 800 and second time structural sheet 420 projected area; The projected area essence of second time structural sheet 420 is between to second side 426 that should secondary light source group 400 and the 3rd time structural sheet 720 projected area.
In addition; With Fig. 4, Fig. 5 and Fig. 7 A, Fig. 7 B, Fig. 7 C; What must stress is; In order to reach control of good subregion and optical effect, above in a plurality of LGPs of backlight module 100, being positioned at LGP time go out light belt shared above the bottom surface of light guide plate area ratio preferable less than below LGP time go out light belt shared below the bottom surface of light guide plate area ratio.Like Fig. 4 and Fig. 5, go out light belt 222 areas for the first time less than going out for the second time light belt 422 areas; Like Fig. 7 A, Fig. 7 B, Fig. 7 C, go out for the first time light belt 222 areas less than going out for the second time light belt 422 areas, go out light belt 422 areas for the second time less than bright dipping zone face long-pending 722 for the third time.In addition; The LGP number that backlight module adopted the more; It is littler for the first time to go out light belt 222 shared bottom surface of light guide plate ratios, for example goes out light belt 222 areas the first time of Fig. 7 A, Fig. 7 B, Fig. 7 C (adopting three LGPs) less than going out Fig. 4 (adopting two LGPs) light belt 222 areas for the first time.
In detail, in the above embodiments, going out light belt 222 for the first time, going out light belt 422 for the second time and going out the number percent that light belt 722 occupies corresponding bottom surface of light guide plate area for the third time has related with the employed LGP number of this backlight module.In order to reach the control of good optical effect and subregion, the inferior bright dipping zone face of first LGP (being positioned at the LGP of backlight module top) amasss preferable 1/ (N+1) less than first bottom surface of light guide plate area, and wherein N is the quantity of LGP.The preferable 1-of area (1/N) that time goes out light belt of N LGP (being positioned at the LGP of backlight module 100 bottoms) greater than this bottom surface of light guide plate area.N is during greater than 2 number, the inferior bright dipping zone face long-pending [1/ (N+1)] and [1-(1/N)] between this bottom surface of light guide plate area of the LGP between first LGP group and N LGP.
For example; As shown in Figure 2 when backlight module 100 only comprises first LGP 200 and second LGP 400, go out for the first time light belt 222 areas preferable less than first LGP, 200 base areas 1/3 and to go out light belt 422 areas for the second time preferable greater than 1/2 of second LGP, 400 base areas.In addition; As shown in Figure 6 when backlight module 100 comprises first LGP 200, second LGP 400 and the 3rd LGP 700, go out for the first time light belt 222 areas preferable less than first LGP, 200 base areas 1/4 and to go out light belt 722 areas for the third time preferable greater than 2/3 of the 3rd LGP 700 base areas.Going out for the second time the ratio that light belt 422 areas occupy second LGP, 400 base areas then is between 1/4 and 2/3.
In the above embodiments, backlight module of the present invention uses the formed microstructured layers of two to three LGPs and LGP surface to change the direct of travel of light that light source produces respectively, and then reaches the effect of luminous zone divisional light emission, but is not limited thereto; In different embodiment, backlight module of the present invention also can use the LGP of different numbers according to the luminous intensity of light source, the light penetration rate of LGP.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (22)
1. a backlight module is characterized in that, comprises:
One first LGP comprises structural sheet one first time, is formed at the bottom surface of this first LGP; Wherein this first time structural sheet comprises: one first master goes out light belt, along the one first side distribution of this first LGP, and has the microstructure aperture opening ratio less than 60%; And one go out for the first time light belt, first mainly goes out light belt and distribute along this, and have the microstructure aperture opening ratio greater than 60%; Wherein this first main go out light belt and goes out for the first time between light belt and this first side at this;
One first light sources is provided with respect to this first side, and produces this first side of light incident;
One second LGP, superimposed this second LGP comprises structural sheet one second time in this first LGP and towards this first time structural sheet, is formed at this second LGP one side of this first LGP dorsad; Wherein this second time structural sheet comprises: one second master goes out light belt, along the one second side distribution of this second LGP, and parallel this first side of this second side, this second master goes out light belt and has the microstructure aperture opening ratio less than 60%; And one go out for the second time light belt, second mainly goes out light belt and distribute along this, and have the microstructure aperture opening ratio greater than 60%; Wherein this second main go out light belt be positioned at this go out for the second time light belt and this second side between; And
One secondary light source group is provided with respect to this second side, and produces this second side of light incident;
Wherein, this first time structural sheet exposes this in the view field of this second time structural sheet and second mainly goes out light belt, and this first time structural sheet at least part to go out light belt for the second time overlapping with this.
2. backlight module as claimed in claim 1 is characterized in that, this area that goes out light belt for the first time is less than 30% of this first bottom surface of light guide plate area, this area that goes out light belt for the second time between this second bottom surface of light guide plate area 30% and 90% between.
3. backlight module as claimed in claim 1 is characterized in that, this first LGP further comprises structural sheet on one first, and wherein to penetrate direction parallel for the bearing of trend of this structural sheet on first and the light of this first light sources.
4. backlight module as claimed in claim 3; It is characterized in that; This second LGP further comprises structural sheet on one second; Wherein to penetrate direction parallel for the bearing of trend of this structural sheet on second and the light of this secondary light source group, this on second on structural sheet and this first bearing of trend of structural sheet be parallel to each other.
5. backlight module as claimed in claim 4; It is characterized in that; This on first on structural sheet and this second structural sheet one of them comprises on one first structural sheet corner post on the structural sheet corner post and one second at least, this on first on structural sheet corner post and this second the structural sheet corner post have different drift angle, height or width.
6. backlight module as claimed in claim 5 is characterized in that, the drift angle of structural sheet corner post is respectively between 80 ° to 100 ° on the drift angle of this structural sheet corner post on first and this second.
7. backlight module as claimed in claim 5; It is characterized in that; This on first structural sheet comprise this structural sheet corner post on first, this structural sheet corner post on structural sheet corner post and the 3rd on second, this on first the structural sheet corner post this on second on the structural sheet corner post and the 3rd between the structural sheet corner post and this on first on structural sheet corner post and this second angle between the adjacent face of structural sheet corner post be different from this angle between the adjacent face of structural sheet corner post on structural sheet corner post and the 3rd on first.
8. backlight module as claimed in claim 1 is characterized in that, this first light sources comprises a plurality of first light sources, is distributed in this first side in regular turn, and those first light sources are optionally lighted.
9. backlight module as claimed in claim 1 is characterized in that the luminous intensity of this first light sources is greater than the luminous intensity of this secondary light source group.
10. backlight module as claimed in claim 1 is characterized in that, further comprises one first diffusion sheet, is arranged between this first LGP and this second LGP.
11. backlight module as claimed in claim 1 is characterized in that, this goes out light belt for the first time and is overlapped in this in fact in the view field of this second time structural sheet and goes out light belt for the second time, and the area of this first time structural sheet goes out the area of light belt for the second time greater than this.
12. backlight module as claimed in claim 1 is characterized in that, this second master goes out light belt and goes out light belt for the first time between the view field on this second time structural sheet between this secondary light source group and this.
13. backlight module as claimed in claim 1 is characterized in that, further comprises:
One the 3rd LGP, superimposed in this second LGP and towards this second time structural sheet, the 3rd LGP comprises structural sheet one the 3rd time, is formed at the 3rd LGP one side of this second LGP dorsad; Wherein the 3rd time structural sheet comprises: one the 3rd master goes out light belt, along one the 3rd side distribution of the 3rd LGP, and parallel this second side of the 3rd side, and have microstructure aperture opening ratio less than 60%; And one go out light belt for the third time, mainly goes out light belt and distribute along the 3rd, and have the microstructure aperture opening ratio greater than 60%; Wherein the 3rd main go out light belt and goes out for the third time between light belt and the 3rd side at this; And
One the 3rd light sources is provided with respect to the 3rd side, and produces light incident the 3rd side; Wherein, this first time structural sheet and this second time structural sheet go out light belt view field's exposure the 3rd master of the 3rd time structural sheet.
14. backlight module as claimed in claim 13 is characterized in that, this goes out light belt for the second time and is overlapped in this in the view field of the 3rd time structural sheet and goes out light belt for the third time, and the area of this second time structural sheet goes out the area of light belt for the third time greater than this.
15. backlight module as claimed in claim 13 is characterized in that, the 3rd main go out light belt and goes out second time structural sheet of light belt for the second time between the view field on the 3rd time structural sheet between the 3rd light sources and this.
16. backlight module as claimed in claim 13; It is characterized in that; This area that goes out light belt for the first time is less than 25% of this first bottom surface of light guide plate area; This area that goes out light belt for the second time between this second bottom surface of light guide plate area 25% and 70% between, this area that goes out light belt for the third time between the 3rd bottom surface of light guide plate area 70% and 90% between.
17. backlight module as claimed in claim 1; It is characterized in that this first time structural sheet and this second time structural sheet comprise a strip print structure, a point-like print structure, a strip projection, a point-like projection, recessed an of strip, recessed an of point-like or its combination.
18. backlight module as claimed in claim 1; It is characterized in that; This first master goes out light belt and comprises one first microstructured area and one second microstructured area; The microstructure aperture opening ratio of this first microstructured area is less than the microstructure aperture opening ratio of this second microstructured area, and this second microstructured area goes out between the light belt in this first microstructured area and this for the first time.
19. backlight module as claimed in claim 1; It is characterized in that; This second key light band comprises one first microstructured area and one second microstructured area; The microstructure aperture opening ratio of this first microstructured area is less than the microstructure aperture opening ratio of this second microstructured area, and this second microstructured area goes out between the light belt in this first microstructured area and this for the second time.
20. backlight module as claimed in claim 1; It is characterized in that; Further comprise one the 3rd LGP, superimposed in this second LGP and towards this second time structural sheet, the 3rd LGP comprises structural sheet one the 3rd time; Be formed at the 3rd LGP dorsad this second LGP one side and distribute along one the 3rd side of the 3rd LGP, the projected area of the 3rd time structural sheet is between the 3rd side and this second time structural sheet projected area; The projected area of this second time structural sheet is between this second side and the 3rd time structural sheet projected area.
21. backlight module as claimed in claim 20; It is characterized in that; This second time structural sheet further comprises and cushions out light belt, and it has the microstructure aperture opening ratio less than 60%, and this second mainly goes out light belt and cushion out light belt to be positioned at this and to go out the relative both sides of light belt for the second time; The 3rd time structural sheet further comprises another and cushions out light belt, and it has the microstructure aperture opening ratio less than 60%, wherein the 3rd main go out light belt and this another cushion out light belt and be positioned at this and go out the relative both sides of light belt for the third time.
22. a backlight module is characterized in that, comprises the LGP group that N LGP is formed by stacking, wherein each this LGP comprises structural sheet, and this time structural sheet comprises:
One main goes out light belt, distributes and has the microstructure aperture opening ratio less than 60% along a side of this LGP; And
Once go out light belt, go out light belt along this master and distribute and have a microstructure aperture opening ratio greater than 60%, wherein this master goes out light belt and goes out between light belt and this side in this time;
Wherein be positioned at long-pending 1/ (N+1) of this time bright dipping zone face that this LGP comprised on this LGP group top less than this bottom surface of light guide plate area; Be positioned at the long-pending 1-(1/N) of this time bright dipping zone face of this LGP of this LGP group bottom greater than this bottom surface of light guide plate area; N is during greater than 2 number, is positioned at this time bright dipping zone face that this LGP comprised long-pending [1/ (N+1)] and [1-(1/N)] between this bottom surface of light guide plate area between this LGP group bottom and top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010543342XA CN101984281B (en) | 2010-11-05 | 2010-11-05 | Zonal light-emitting backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010543342XA CN101984281B (en) | 2010-11-05 | 2010-11-05 | Zonal light-emitting backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101984281A CN101984281A (en) | 2011-03-09 |
| CN101984281B true CN101984281B (en) | 2012-07-25 |
Family
ID=43641452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010543342XA Active CN101984281B (en) | 2010-11-05 | 2010-11-05 | Zonal light-emitting backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101984281B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI457662B (en) * | 2011-12-15 | 2014-10-21 | Au Optronics Corp | Backlight module |
| CN103511980A (en) * | 2013-09-13 | 2014-01-15 | 南京高一智光电有限公司 | Light guide plate |
| CN105652363B (en) * | 2016-03-30 | 2019-04-05 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN110568657A (en) * | 2018-06-05 | 2019-12-13 | 中强光电股份有限公司 | Display device |
| CN109143680A (en) * | 2018-08-31 | 2019-01-04 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| CN114137759A (en) * | 2020-09-03 | 2022-03-04 | 群创光电股份有限公司 | Backlight module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303476A (en) * | 2007-05-09 | 2008-11-12 | 奇美电子股份有限公司 | Backlight module and LCD device using the same |
| CN101498810A (en) * | 2009-03-25 | 2009-08-05 | 友达光电股份有限公司 | Light conducting plate and backlight module employing the same |
| CN101782218A (en) * | 2010-02-26 | 2010-07-21 | 上海向隆电子科技有限公司 | Light guide plate, backlight module and light transmission method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010205451A (en) * | 2009-02-27 | 2010-09-16 | Minebea Co Ltd | Light source positioning structure of keyboard unit for back light |
-
2010
- 2010-11-05 CN CN201010543342XA patent/CN101984281B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303476A (en) * | 2007-05-09 | 2008-11-12 | 奇美电子股份有限公司 | Backlight module and LCD device using the same |
| CN101498810A (en) * | 2009-03-25 | 2009-08-05 | 友达光电股份有限公司 | Light conducting plate and backlight module employing the same |
| CN101782218A (en) * | 2010-02-26 | 2010-07-21 | 上海向隆电子科技有限公司 | Light guide plate, backlight module and light transmission method |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-205451A 2010.09.16 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101984281A (en) | 2011-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11156871B2 (en) | Backlight module | |
| CN101984281B (en) | Zonal light-emitting backlight module | |
| CN102109633B (en) | Regional lighting side-light type light guide plate and regional lighting side-light type backlight module | |
| CN100582893C (en) | Side light-emitting device, backlight unit, and liquid crystal display apparatus | |
| US10197720B2 (en) | Backlight module and display device | |
| US20060083019A1 (en) | Backlight apparatus reduced in thickness | |
| CN101900303A (en) | Optical element, lighting device and display unit | |
| JP2003132722A (en) | Surface-formed lightsource device and liquid crystal display device provided with the same | |
| US9013790B1 (en) | High contrast rear projection screen for use with a diverging illumination source | |
| CN101737669A (en) | Backlight unit | |
| CN107526217B (en) | Side-in backlight module and display device | |
| CN102518988B (en) | Backlight module | |
| US8708520B2 (en) | Illumination device and electronic apparatus | |
| CN101241264A (en) | Liquid crystal display device having improved light guide plate | |
| US9329323B2 (en) | Light source and backlight module having the same | |
| US10969628B1 (en) | Backlight units with support posts and cavity height monitoring | |
| CN102654259A (en) | Backlight device and display apparatus | |
| CN105629541B (en) | Double-side display device | |
| US20110316766A1 (en) | Liquid crystal display device, backlight and led | |
| CN101680633B (en) | Backlight unit and liquid crystal display | |
| JP2010123551A (en) | Surface light source and liquid crystal display device | |
| US20180210269A1 (en) | Frame, backlight module, and liquid crystal display device | |
| TWI468796B (en) | Backlight module with local dimming capability | |
| US9176370B1 (en) | High contrast rear projection screen | |
| US20160266439A1 (en) | Direct type backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |