CN103499052A - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
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- CN103499052A CN103499052A CN201310439865.3A CN201310439865A CN103499052A CN 103499052 A CN103499052 A CN 103499052A CN 201310439865 A CN201310439865 A CN 201310439865A CN 103499052 A CN103499052 A CN 103499052A
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- light
- backboard
- backlight
- plate
- lamp bar
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Abstract
The invention relates to the field of display technologies and discloses a backlight source and a display device. The backlight source comprises a back plate, a light guide plate, a light cover, a light bar and a reflection plate. The back plate is provided with a bottom plate and a side wall. The light guide plate is arranged in the back plate. The light cover is arranged on the side wall, opposite to the light-entering side of the light guide plate, of the back plate. The light cover is provided with a light bar placing area, and the light bar placing area is opposite to the bottom plate of the back plate. The light bar is arranged in the light bar placing area of the light cover. The reflection plate is obliquely arranged at the connecting position of the bottom plate and the side wall. Light irradiated by the light bar is reflected through the reflection plate and then irradiates into the light guide plate. The backlight source has the advantages that because the height of the light bar is smaller than the width of the light bar, the structure that the light bar is arranged at the position opposite to the bottom plate of the back plate is adopted, the thickness of the backlight source is reduced, and the thin type development of the display device is facilitated.
Description
Technical field
The present invention relates to the Display Technique field, refer more particularly to a kind of backlight and display unit.
Background technology
At present, lightness, slimming, attractive in appearanceization have become demonstration industry Future Development trend, and to achieve these goals, the producer updates the structure of backlight.
Backlight of the prior art is by adopting straight-down negative and two kinds of backlight design of side entering type.Wherein, the design principle of direct-light-type backlight is that light source is set below diffuser plate.And the design of side-edge type backlight is by the LGP side, light source being set.As shown in Figure 1, the structural representation that Fig. 1 is side-edge type backlight, wherein, described backlight comprises: backboard 1, be arranged at the reflector plate 2 in described backboard 1, be arranged at the LGP 3 of described reflector plate 2 tops, be arranged at the optical diaphragm group 4 of described LGP 3 tops, be set in the framework 6 of described optical diaphragm group 4, and the lamp bar 5 that is arranged at backboard 1 sidewall relative with described LGP 3 light inlet sides.In use, the light that lamp bar 5 irradiates enters in LGP 3, the light part entered in LGP 3 penetrates and enters into Guangxi's diaphragm group 4 from the exiting surface of LGP 3, another part shines on reflector plate 2, and again enter into LGP 3 and finally enter into Guangxi's diaphragm group 4 after reflector plate 2 reflections, the light that backlight irradiates is evenly penetrated.
The defect of prior art is: because the lamp bar of side-edge type backlight is arranged on the sidewall of backboard, thereby make the thickness of the size impact of lamp bar to backlight, and then had influence on the slimming of display unit.
Summary of the invention
The invention provides a kind of backlight and display unit, in order to reduce the thickness of display unit, be convenient to the slimming development of display unit.
The invention provides a kind of backlight, comprising:
Backboard with base plate and sidewall;
Be arranged at the LGP in described backboard;
Be arranged at the lampshade of the backboard sidewall relative with described LGP light inlet side, wherein, described lampshade has lamp bar rest area, and this lamp bar rest area is relative with the base plate position of described backboard;
Be arranged at the interior lamp bar of lamp bar rest area of described lampshade;
Be inclined in the reflecting plate of described base plate and sidewall junction, the light that described lamp bar irradiates shines in LGP after described baffle reflection.
In technique scheme, because the height of lamp bar is less than the width of lamp bar, so adopt the structure that the lamp bar is arranged on to the position relative with the base plate of backboard, reduced the thickness of backlight, be convenient to the slimming development of display unit.
Preferably, the base plate of described backboard and the junction of sidewall have bending structure, and described reflecting plate is arranged at the bending structure of described base plate.Make by bending structure being fixed in backboard that reflecting plate can be stable.
Preferably, the base plate of described reflecting plate and described backboard and sidewall are structure as a whole.Simplify the structure of backboard, be convenient to the production of backboard.
Preferably, between described reflecting plate and described base plate angle at 30 °～60 °.Be convenient to light reflection in LGP.
Preferably, described reflecting plate has a plurality of sawtooth projections.Further improve the reflecting effect of reflecting plate, simultaneously, made light carry out mixed light in the process of reflection.
Preferably, described sawtooth projection is shaped as triangle or arc.There is good diffuse effect.
Preferably, described lampshade and described backboard are structure as a whole.Simplify the structure of backlight, be convenient to the production of backlight.
Preferably, described lampshade is pasted or is welded and fixed with described backboard and is connected.Adopt split type production, can utilize backboard of the prior art.
The present invention also provides a kind of display unit, comprises above-mentioned any backlight.There is thinner thickness, be convenient to the slimming of display unit.
The accompanying drawing explanation
The structural representation that Fig. 1 is side-edge type backlight in prior art;
The structural representation of the backlight that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the backlight that Fig. 3 provides for another embodiment of the present invention;
The backboard that Fig. 4 provides for the embodiment of the present invention and the connection diagram of lampshade;
The reflecting plate that Fig. 5 provides for the embodiment of the present invention and the structural representation of backboard;
The reflecting plate that Fig. 6 provides for the embodiment of the present invention and the structural representation of lampshade.
Reference numeral:
The specific embodiment
In order to reduce the thick end of backlight, and then be convenient to the slimming development of display unit, the embodiment of the present invention provides a kind of backlight and display unit.In technical scheme of the present invention, by the lamp bar being fixed on the lampshade relative with the base plate of backboard, and the light reflection lamp bar irradiated by reflecting plate is in LGP, make the thickness of backlight not be subject to the impact of lamp bar width, thereby reduced the thickness of backlight, be convenient to the slimming development of display unit.For making the purpose, technical solutions and advantages of the present invention clearer, below take nonrestrictive embodiment and the present invention is described in further detail as example.
As shown in Figure 2, Fig. 2 shows the structure of the backlight in some embodiments of the invention.
The backlight that the embodiment of the present invention provides comprises: the backboard 10 with base plate 11 and sidewall 12;
Be arranged at the LGP 30 in described backboard 10;
Be arranged at the lampshade 70 of backboard 10 sidewalls 12 relative with described LGP 30 light inlet sides, wherein, described lampshade 70 has lamp bar rest area, and this lamp bar rest area is relative with base plate 11 positions of described backboard 10;
Be arranged at the interior lamp bar 50 of lamp bar 50 rest areas of described lampshade 70;
Be inclined in the reflecting plate 80 of described base plate 11 and sidewall 12 junctions, the light that described lamp bar 50 irradiates shines in LGP 30 after described reflecting plate 80 reflections.
Backlight is side-edge type backlight in the above-described embodiments, this backlight also comprises: be arranged on the reflector plate 20 in backboard 10, be arranged on the optical diaphragm group 40 of LGP 30 tops, and the framework 60 that is sleeved on optical diaphragm group 40, the lamp bar rest area of lampshade 70 is relative with the base plate 11 of backboard 10, make the lamp bar 50 that is arranged on these lamp bar 50 rest areas towards base plate 11, lamp bar 50 adopts light emitting diode as light source, the height of this light emitting diode is lower than its width, therefore, the structure of employing the present embodiment can reduce the thickness of backlight, be convenient to the slimming development of display unit.
Simultaneously, side-edge type backlight of the prior art, lamp bar 50 is arranged on the sidewall 12 of backboard 10, and the light that lamp bar 50 irradiates directly enters in LGP 30, due to shining LGP 30 abundant mixed light when interior, cause the side area of display unit to form lamp shadow.The backlight that the present embodiment provides is than backlight of the prior art, because lamp bar 50 is arranged at the zone relative with the base plate 11 of backboard 10, the light major part that lamp bar 50 irradiates shines on the tilting reflecting plate 80 of base plate 11 and sidewall 12 junctions, the light irradiated just enters into LGP 30 after reflecting plate 80 reflections, strengthen light and entered into LGP 30 stroke when interior, improved the mixed light of light before entering into LGP 30, make backlight that uniform light can be provided, and then improved the display effect of display unit.
In the lump with reference to figure 5 and Fig. 6, reflecting plate 80 wherein can adopt different micro-structurals to increase the light mixing effect of light, concrete, some sawtooth projections 81 are set on reflecting plate 80, the shape of this sawtooth projection 81 can be different shape, as triangle, arc, or other special-shaped bulge-structure, the abundant mixed light of light that only need lamp bar 50 can be launched at reflex time gets final product after also can reflecting in LGP 30, this projection can adopt the projection of bar shaped, also can adopt conically shaped body, triangle body equigranular projection, as long as can realize above-mentioned purpose.
In order further to improve light reflection that reflecting plate 80 irradiates lamp bar 50 in LGP 30, when reflecting plate 80 is set, the angle of reflecting plate 80 and backboard 10 base plates 11 is arranged between 30 °～60 °.Concrete, can be any one angle between 30 ° and 60 ° such as 30 °, 35 °, 40 °, 50 °, 55 °, 60 °.And in the backlight of same type, the micro-structural difference arranged on reflecting plate 80, the angle of inclination that reflecting plate 80 is placed is not identical yet.
Structure between backboard 10 and reflecting plate 80 can in different ways, below be elaborated with specific embodiment.
Continuation is with reference to figure 2, and reflecting plate 80 and backboard 10 adopt Split type structure, wherein, have the micro-structural in foregoing description on reflecting plate 80, and the angle of the base plate 11 of reflecting plate 80 and backboard 10 are between 30 ° to 60 °.As: 30 °, 35 °, 40 °, 50 °, 55 °, 60 ° etc.The base plate 11 of backboard 10 and the junction of a sidewall 12 have bending structure 13, and this sidewall is the sidewall 12 that is positioned at LGP 30 light inlet sides.Reflecting plate 80 is arranged on this bending structure 13, concrete, and reflecting plate 80 can adopt the mode of welding or stickup to be fixed on reflecting plate 80.
Reflecting plate 80 wherein can be straight plate, it can be also arc, concrete, this arc can be the different arcs such as circular arc, elliptic arc or irregular arc, wherein the sunk area of this arc is towards LGP 30, thereby the light that makes lamp bar 50 irradiate, shining in LGP 30 as much as possible after reflecting plate 80 reflections, is avoided the loss of light.
In order further to avoid the loss of light, on the sidewall 12 relative with LGP 30 light inlet sides, one deck reflecting layer also is set, make the light that shines sidewall 12 after reflecting plate 80 reflections can reflex in LGP 30, thereby avoided the loss of light, improved the light efficiency of backlight.
Perhaps can also adopt another reflecting plate 80 structure, reflecting plate 80 is bending structure, the part of bending and backboard 10 base plates 11 are the angle of 30 ° to 60 °, sidewall 12 laminatings of another part of bending and backboard 10, thereby the light that better reflectoscope bar 50 irradiates.
As shown in Figure 3, Fig. 3 shows the structure of the backboard backboard in some embodiments of the invention.Reflecting plate 80 and backboard 10 adopt integrative-structure, be reflecting plate 80 and backboard 10 integrated punching moulding, now, the junction of the base plate 11 of backboard 10 and the sidewall 12 relative with LGP 30 light inlet sides is provided with bending structure 13, the side that this bending structure 13 is positioned at backboard 10 is provided with reflecting layer, and the light that lamp bar 50 irradiates shines in LGP 30 after reflective layer reflects.Now, also above-mentioned micro-structural can be set on bending structure 13, form micro-structural by the mode that adopts punching press or extruding on bending structure 13, thereby increased the reflecting effect to light.
When adopting bending structure 13, the unspecified angle of bending angle between 30 ° to 60 °.As: 30 °, 35 °, 40 °, 50 °, 55 °, 60 ° etc.
When adopting bending structure 13, can adopt different bendings, concrete, the transition region that can there is a downward bending between base plate 11 and bending structure 13, perhaps directly bending obliquely upward of base plate 11, part after bending is still straight plate, perhaps the part after bending is arc, its arc can be any arcuate structures such as circular arc, elliptic arc or irregular arc, and the arc-shaped recess zone is towards LGP 30, thereby make, the light that lamp bar 50 irradiates can more reflex in LGP 30 after reflection.
Better, on the sidewall 12 relative with LGP 30 light inlet sides, one deck reflecting layer also is set, make the light that shines sidewall 12 after reflecting plate 80 reflections can reflex in LGP 30, thereby avoided the loss of light, improved the light efficiency of backlight.
In above-mentioned two kinds of embodiments, light reflection reflecting plate 80 structures interior to LGP 30 that a part can irradiate lamp bar 50 have only been listed, should be understandable that, the present invention is that embodiment is not limited only to the structure in above-mentioned two embodiment, the structure of any one light reflection that lamp bar 50 can be irradiated interior reflecting plate 80 to LGP 30 can be applied in the backlight in the embodiment of the present invention, its operation principle is identical with the principle of reflecting plate 80 in above-mentioned two embodiment, at this, no longer enumerates for example one by one.
Lampshade 70 in the embodiment of the present invention has the rest area of placing lamp bar 50, these lamp bar 50 rest areas are relative with base plate 11 positions in backboard 10, thereby guarantee that lamp bar 50 is when placing, the bright dipping side of lamp bar 50 is towards base plate 11, now, the height that the direction that is arranged in backlight thickness is lamp bar 50 Light-Emitting Diodes, due to the height of the light emitting diode width lower than light emitting diode, as: the light emitting diode of 3020 models commonly used, it is highly 0.6mm, width is 2mm, length is 3mm, therefore, adopt lamp bar 50 exiting surfaces can effectively reduce the thickness of backlight towards base plate 11, can adopt different structures between concrete lampshade 70 and backboard 10, below describe in detail for example.
Continuation is with reference to figure 2, and backboard 10 and lampshade 70 are Split type structure, wherein, between backboard 10 and lampshade 70, by modes such as stickup or welding, is fixedly connected with.Now, lampshade 70 can be simple bending part, and the part of bending part is fixedly connected with the sidewall 12 of backboard 10, and another part is towards the base plate 11 of backboard 10, and lamp bar 50 rest areas of lampshade 70 are positioned at this dogleg section towards backboard 10 base plates 11.Perhaps lampshade 70, except above-mentioned bending structure 13, is being done a upwards sunk structure of protuberance in the position at lamp bar 50 rest area places, thereby is being made lamp bar 50 can improve the situation of light leak when placing.
Continuation is with reference to figure 3, backboard 10 and lampshade 70 are structure as a whole, and now, lampshade 70 is the bending structures of backboard 10 volume sidewalls 12 towards backboard 10 inside, this bending structure can be a simple right-angle bending, and lamp bar 50 rest areas are positioned at the part after this bending.Also can adopt after bending, a upwards depression of protuberance is done in the position at lamp bar 50 rest area places, thereby improves the light leak situation of backboard 10.In the lump with reference to figure 4, can backboard 10, reflecting plate 80 lampshades 70 is one-body molded, now, reflecting plate 80 is its bending structure 13, the inside bending structure of the sidewall that lampshade 70 is backboard 10.
In order further to improve the light leak of backlight, the framework 60 arranged on backboard 10 shelters from the gap between backboard 10 and LGP 30, thereby further improves the light leak situation of backlight, has improved the display effect of display unit.
As shown in Figure 5 and Figure 6, Fig. 5 and Fig. 6 show the structure of reflecting plate and lampshade in some embodiment.Now, lampshade 70 and reflecting plate 80 be as integrative-structure, and be fixedly connected with the sidewall 12 of backboard 10, now, lampshade 70 and reflecting plate 80 are one-body molded by punching press, wherein, but in also punching press or squeeze out micro-structural of reflecting plate 80, to increase the effect of reflection ray.
The embodiment of the present invention also provides a kind of display unit, comprises above-mentioned any backlight, has all advantages of above-mentioned backlight, and therefore, the display unit that the embodiment of the present invention provides has thinner thickness, and good display effect.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. a backlight, is characterized in that, comprising:
Backboard with base plate and sidewall;
Be arranged at the LGP in described backboard;
Be arranged at the lampshade of the backboard sidewall relative with described LGP light inlet side, wherein, described lampshade has lamp bar rest area, and this lamp bar rest area is relative with the base plate position of described backboard;
Be arranged at the interior lamp bar of lamp bar rest area of described lampshade;
Be inclined in the reflecting plate of described base plate and sidewall junction, the light that described lamp bar irradiates shines in LGP after described baffle reflection.
2. backlight as claimed in claim 1, is characterized in that, the base plate of described backboard and the junction of sidewall have bending structure, and described reflecting plate is arranged at the bending structure of described base plate.
3. backlight as claimed in claim 2, is characterized in that, base plate and the sidewall of described reflecting plate and described backboard are structure as a whole.
4. backlight as claimed in claim 1, is characterized in that, between described reflecting plate and described base plate, angle is at 30 °～60 °.
5. backlight as described as claim 1～4 any one, is characterized in that, described reflecting plate has a plurality of sawtooth projections.
6. backlight as claimed in claim 5, is characterized in that, described sawtooth projection be shaped as triangle or arc.
7. backlight as claimed in claim 4, is characterized in that, described lampshade and described backboard are structure as a whole.
8. backlight as claimed in claim 4, is characterized in that, described lampshade is pasted or is welded and fixed with described backboard and is connected.
9. a display unit, is characterized in that, comprises backlight as described as claim 1～8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439865.3A CN103499052B (en) | 2013-09-24 | 2013-09-24 | A kind of backlight and display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439865.3A CN103499052B (en) | 2013-09-24 | 2013-09-24 | A kind of backlight and display unit |
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| Publication Number | Publication Date |
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| CN103499052A true CN103499052A (en) | 2014-01-08 |
| CN103499052B CN103499052B (en) | 2015-09-09 |
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| CN201310439865.3A Expired - Fee Related CN103499052B (en) | 2013-09-24 | 2013-09-24 | A kind of backlight and display unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777549A (en) * | 2015-04-23 | 2015-07-15 | 福州大学 | Light guide strip for liquid crystal display |
| CN104793282A (en) * | 2015-04-23 | 2015-07-22 | 福州大学 | Optical coupling module of lateral-entry type light guide plate and backlight module applying optical coupling module |
| CN105202424A (en) * | 2015-10-29 | 2015-12-30 | 京东方光科技有限公司 | Backlight unit and display unit |
| CN113917594A (en) * | 2021-09-08 | 2022-01-11 | 浙江吉利控股集团有限公司 | Light-emitting device and steering wheel |
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| CN102661543A (en) * | 2012-04-27 | 2012-09-12 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN202598303U (en) * | 2012-04-12 | 2012-12-12 | 北京京东方光电科技有限公司 | Backlight module and display device |
| CN202852594U (en) * | 2012-09-05 | 2013-04-03 | 达运精密工业（苏州）有限公司 | Backlight module and liquid crystal display device applied with the same |
| EP2629003A1 (en) * | 2012-02-15 | 2013-08-21 | LG Innotek Co., Ltd. | Light unit and illumination system using the same |
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2013
- 2013-09-24 CN CN201310439865.3A patent/CN103499052B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101017284A (en) * | 2007-03-02 | 2007-08-15 | 友达光电股份有限公司 | Light source device |
| EP2629003A1 (en) * | 2012-02-15 | 2013-08-21 | LG Innotek Co., Ltd. | Light unit and illumination system using the same |
| CN202598303U (en) * | 2012-04-12 | 2012-12-12 | 北京京东方光电科技有限公司 | Backlight module and display device |
| CN102661543A (en) * | 2012-04-27 | 2012-09-12 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777549A (en) * | 2015-04-23 | 2015-07-15 | 福州大学 | Light guide strip for liquid crystal display |
| CN104793282A (en) * | 2015-04-23 | 2015-07-22 | 福州大学 | Optical coupling module of lateral-entry type light guide plate and backlight module applying optical coupling module |
| CN104793282B (en) * | 2015-04-23 | 2018-02-06 | 福州大学 | The optical coupler module of edge-type light guide plate and the backlight module using the module |
| CN105202424A (en) * | 2015-10-29 | 2015-12-30 | 京东方光科技有限公司 | Backlight unit and display unit |
| CN105202424B (en) * | 2015-10-29 | 2018-03-02 | 京东方光科技有限公司 | Back light unit and display device |
| US10393948B2 (en) | 2015-10-29 | 2019-08-27 | Boe Technology Group Co., Ltd. | Backlight unit and display device |
| CN113917594A (en) * | 2021-09-08 | 2022-01-11 | 浙江吉利控股集团有限公司 | Light-emitting device and steering wheel |
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| CN103499052B (en) | 2015-09-09 |
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