CN103499052B - A kind of backlight and display unit - Google Patents
A kind of backlight and display unit Download PDFInfo
- Publication number
- CN103499052B CN103499052B CN201310439865.3A CN201310439865A CN103499052B CN 103499052 B CN103499052 B CN 103499052B CN 201310439865 A CN201310439865 A CN 201310439865A CN 103499052 B CN103499052 B CN 103499052B
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- backboard
- lamp bar
- backlight
- plate
- base plate
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Abstract
The present invention relates to Display Technique field, disclose a kind of backlight and display unit, this backlight comprises: the backboard with base plate and sidewall; Be arranged at the light guide plate in described backboard; Be arranged at the lampshade of the backboard sidewall relative with described light guide plate incident 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 lamp bar in the 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 is irradiated in light guide plate after described baffle reflection.Beneficial effect of the present invention is: the height due to lamp bar is less than the width of lamp bar, therefore adopts structure lamp bar being arranged on the position relative with the base plate of backboard, reduces the thickness of backlight, is convenient to the slimming development of display unit.
Description
Technical field
The present invention relates to 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 display 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 side entering type two kinds of backlight design.Wherein, the design principle of direct-light-type backlight arranges light source below diffuser plate.And the design of side-edge type backlight is by arranging light source in light guide plate side.As shown in Figure 1, Fig. 1 is the structural representation of 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 light guide plate 3 above described reflector plate 2, be arranged at the optical diaphragm group 4 above described light guide plate 3, be set in the framework 6 of described optical diaphragm group 4, and be arranged at the lamp bar 5 of backboard 1 sidewall relative with described light guide plate 3 incident side.In use, the light that lamp bar 5 irradiates enters in light guide plate 3, the light part entered in light guide plate 3 penetrates from the exiting surface of light guide plate 3 and enters into Guangxi's diaphragm group 4, another part is irradiated on reflector plate 2, and after reflector plate 2 reflects, again enter into light guide plate 3 and finally enter into Guangxi's diaphragm group 4, the uniform light injection that backlight is irradiated.
The defect of prior art is: because the lamp bar of side-edge type backlight is arranged on the sidewall of backboard, thus make the thickness of size impact to backlight of lamp bar, 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:
There is the backboard of base plate and sidewall;
Be arranged at the light guide plate in described backboard;
Be arranged at the lampshade of the backboard sidewall relative with described light guide plate incident 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 lamp bar in the 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 is irradiated in light guide plate after described baffle reflection.
In technique scheme, the height due to lamp bar is less than the width of lamp bar, therefore adopts structure lamp bar being arranged on the position relative with the base plate of backboard, reduces the thickness of backlight, is 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.What make that reflecting plate can be stable by bending structure is fixed in backboard.
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 light guide plate.
Preferably, described reflecting plate has multiple sawtooth projection.Further improve the reflecting effect of reflecting plate, meanwhile, make light carry out mixed light in the process of reflection.
Preferably, the shape of described sawtooth projection is 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 with described backboard or is welded and fixed and is connected.Adopt split type production, backboard of the prior art can be utilized.
Present invention also offers a kind of display unit, comprise any one backlight above-mentioned.There is thinner thickness, be convenient to the slimming of display unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of 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 connection diagram of the backboard that Fig. 4 provides for the embodiment of the present invention and lampshade;
The structural representation of the reflecting plate that Fig. 5 provides for the embodiment of the present invention and backboard;
The structural representation of the reflecting plate that Fig. 6 provides for the embodiment of the present invention and lampshade.
Reference numeral:
Detailed description of the invention
In order to reduce the thick end of backlight, and then being convenient to the slimming development of display unit, embodiments providing a kind of backlight and display unit.In the inventive solutions, by lamp bar is fixed on the lampshade relative with the base plate of backboard, and the light reflection irradiated by lamp bar by reflecting plate is in light guide plate, make the thickness of backlight not by the impact of lamp bar width, thus reduce the thickness of backlight, be convenient to the slimming development of display unit.For making the object, technical solutions and advantages of the present invention clearly, for nonrestrictive embodiment, the present invention is described in further detail below.
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 light guide plate 30 in described backboard 10;
Be arranged at the lampshade 70 of backboard 10 sidewall 12 relative with described light guide plate 30 incident side, wherein, described lampshade 70 has lamp bar rest area, and this lamp bar rest area is relative with base plate 11 position of described backboard 10;
Be arranged at the lamp bar 50 in lamp bar 50 rest area of described lampshade 70;
Be inclined in the reflecting plate 80 of described base plate 11 and sidewall 12 junction, the light that described lamp bar 50 irradiates is irradiated in light guide plate 30 after described reflecting plate 80 reflects.
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 above light guide plate 30, and be sleeved on the framework 60 of 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 being arranged on this lamp bar 50 rest area 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, adopt the structure of 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 light guide plate 30, due to can not abundant mixed light when being irradiated in light guide plate 30, the side area of display unit be caused to form lamp shadow.The backlight that the present embodiment provides is compared to backlight of the prior art, because lamp bar 50 is arranged at the region relative with the base plate 11 of backboard 10, the light major part that lamp bar 50 irradiates is irradiated on the tilting reflecting plate 80 of base plate 11 and sidewall 12 junction, the light irradiated just enters into light guide plate 30 after reflecting plate 80 reflects, enhance the stroke of light when entering in light guide plate 30, improve light and enter into the mixed light before light guide plate 30, make backlight can provide uniform light, and then improve 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, reflecting plate 80 is arranged some sawtooth projections 81, 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 only lamp bar 50 need can launched when reflecting also arrives after can reflecting in light guide plate 30, this projection can adopt the projection of bar shaped, also conically shaped body can be adopted, triangle body equigranular is protruding, as long as can above-mentioned purpose be realized.
In order to improve light reflection that lamp bar 50 irradiates by reflecting plate 80 further in light guide plate 30, when arranging reflecting plate 80, the angle of reflecting plate 80 and backboard 10 base plate 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 that reflecting plate 80 is arranged is different, 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, be described in detail with specific embodiment below.
Embodiment 1
Continue with reference to figure 2, reflecting plate 80 and backboard 10 adopt Split type structure, wherein, reflecting plate 80 have the micro-structural in foregoing description, and the angle of the base plate 11 of reflecting plate 80 and backboard 10 is 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 being positioned at light guide plate 30 incident side.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, also can be arc, concrete, this arc can be the different arc such as circular arc, elliptic arc or irregular arc, wherein the sunk area of this arc is towards light guide plate 30, many being irradiated in the light guide plate 30 thus light making lamp bar 50 irradiate can be tried one's best after reflecting through reflecting plate 80, avoids the loss of light.
In order to avoid the loss of light further, the sidewall 12 relative with light guide plate 30 incident side also arranges one deck reflecting layer, the light being irradiated to sidewall 12 after reflecting plate 80 reflects can be reflexed in light guide plate 30, thus avoid the loss of light, improve the light efficiency of backlight.
Or another reflecting plate 80 structure can also be adopted, reflecting plate 80 is bending structure, the part of bending and backboard 10 base plate 11 are in the angle of 30 ° to 60 °, and another part of bending and the sidewall 12 of backboard 10 are fitted, thus can the better light that irradiates of reflectoscope bar 50.
Embodiment 2
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, namely reflecting plate 80 and backboard 10 integrated punching shaping, now, the base plate 11 of backboard 10 and the junction of the sidewall 12 relative with light guide plate 30 incident side are 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 is irradiated in light guide plate 30 after reflective layer reflects.Now, also above-mentioned micro-structural can being set on bending structure 13, by adopting the mode of punching press or extruding to form micro-structural on bending structure 13, thus adding 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, different bendings can be adopted, concrete, the transition region of a downward bending can be had between base plate 11 and bending structure 13, or base plate 11 is directly to oblique upper bending, part after bending is still straight plate, or the part after bending is arc, its arc can be any one arcuate structure such as circular arc, elliptic arc or irregular arc, and arc-shaped recess region is towards light guide plate 30, thus make, the light that lamp bar 50 irradiates can more reflex in light guide plate 30 after reflection.
Better, the sidewall 12 relative with light guide plate 30 incident side also arranges one deck reflecting layer, the light being irradiated to sidewall 12 can be reflexed in light guide plate 30, thus avoid the loss of light, improve the light efficiency of backlight after reflecting plate 80 reflects.
In above-mentioned two kinds of embodiments, only be enumerated light reflection that lamp bar 50 can irradiate by a part to reflecting plate 80 structure in light guide plate 30, should be understandable that, the present invention is the structure that embodiment is not limited only in above-mentioned two embodiments, any one light reflection that lamp bar 50 can be irradiated can be applied in the backlight in the embodiment of the present invention to the structure of the reflecting plate 80 in light guide plate 30, its operation principle is identical with the principle of the reflecting plate 80 in above-mentioned two embodiments, illustrates no longer one by one enumerate at this.
Lampshade 70 in the embodiment of the present invention has the rest area of placing lamp bar 50, this lamp bar 50 rest area is relative with base plate 11 position in backboard 10, thus ensure that lamp bar 50 is when placing, the light emission side of lamp bar 50 is towards base plate 11, now, the direction being arranged in backlight thickness is the height of lamp bar 50 Light-Emitting Diode, because the height of light emitting diode is lower than the width of light emitting diode, as: the light emitting diode of 3020 conventional models, it is highly 0.6mm, width is 2mm, length is 3mm, therefore, adopt lamp bar 50 exiting surface can effectively reduce the thickness of backlight towards base plate 11, concrete lampshade 70 can adopt different structures between backboard 10, citing is described in detail below.
Continue with reference to figure 2, backboard 10 and lampshade 70 are Split type structure, wherein, by paste or the mode such as welding is fixedly connected with between backboard 10 and lampshade 70.Now, lampshade 70 can be simple bending part, and a part for 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 area of lampshade 70 is positioned at this dogleg section towards backboard 10 base plate 11.Or lampshade 70 is except above-mentioned bending structure 13, do a sunk structure upwards swelled in the position at place, lamp bar 50 rest area, thus make lamp bar 50 can improve the situation of light leak when placing.
Continue with reference to figure 3, backboard 10 and lampshade 70 are structure as a whole, and now, lampshade 70 is the bending structure of backboard 10 volume sidewall 12 towards backboard 10 inside, this bending structure can be a simple right-angle bending, and lamp bar 50 rest area is positioned at the part after this bending.Also can adopt after bending, a depression of upwards swelling is done in the position at place, lamp bar 50 rest area, thus improves the light leak situation of backboard 10.In the lump with reference to figure 4, can be one-body molded by backboard 10, reflecting plate 80 lampshade 70, now, reflecting plate 80 is its bending structure 13, and lampshade 70 is the inside bending structure of the sidewall of backboard 10.
In order to improve the light leak of backlight further, the gap between backboard 10 and light guide plate 30 shelters from by the framework 60 that backboard 10 is arranged, thus improves the light leak situation of backlight further, improves the display effect of display unit.
As shown in Figure 5 and Figure 6, Fig. 5 and Fig. 6 shows the structure of reflecting plate and lampshade in some embodiments.Now, lampshade 70 and reflecting plate 80 as integrative-structure, and are fixedly connected with the sidewall 12 of backboard 10, now, it is one-body molded that lampshade 70 and reflecting plate 80 pass through punching press, wherein, also can punching press or squeeze out micro-structural, to increase the effect of reflection ray at reflecting plate 80.
The embodiment of the present invention additionally provides a kind of display unit, comprises any one backlight above-mentioned, 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 change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a backlight, is characterized in that, comprising:
There is the backboard of base plate and sidewall;
Be arranged at the light guide plate in described backboard;
Be arranged at the lampshade of the backboard sidewall relative with described light guide plate incident 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 lamp bar in the 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 is irradiated in light guide plate after described baffle reflection; Wherein,
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.
2. backlight as claimed in claim 1, it is characterized in that, base plate and the sidewall of described reflecting plate and described backboard are structure as a whole.
3. backlight as claimed in claim 1, it is characterized in that, between described reflecting plate and described base plate, angle is at 30 ° ~ 60 °.
4. the backlight as described in any one of claims 1 to 3, is characterized in that, described reflecting plate has multiple sawtooth projection.
5. backlight as claimed in claim 4, it is characterized in that, the shape of described sawtooth projection is triangle or arc.
6. backlight as claimed in claim 3, it is characterized in that, described lampshade and described backboard are structure as a whole.
7. backlight as claimed in claim 3, it is characterized in that, described lampshade is pasted with described backboard or is welded and fixed and is connected.
8. a display unit, is characterized in that, comprises the backlight as described in any one of claim 1 ~ 7.
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 CN103499052A (en) | 2014-01-08 |
| CN103499052B true CN103499052B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (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 |
| 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 |
| CN105202424B (en) * | 2015-10-29 | 2018-03-02 | 京东方光科技有限公司 | Back light 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562786C (en) * | 2007-03-02 | 2009-11-25 | 友达光电股份有限公司 | Light supply apparatus |
| KR102024288B1 (en) * | 2012-02-15 | 2019-09-23 | 엘지이노텍 주식회사 | 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 |
| CN102661543B (en) * | 2012-04-27 | 2015-02-11 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal 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 |
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| CN103499052A (en) | 2014-01-08 |
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Granted publication date: 20150909 |