CN102563469A - Display device and backlight module thereof - Google Patents
Display device and backlight module thereof Download PDFInfo
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- CN102563469A CN102563469A CN2012100390145A CN201210039014A CN102563469A CN 102563469 A CN102563469 A CN 102563469A CN 2012100390145 A CN2012100390145 A CN 2012100390145A CN 201210039014 A CN201210039014 A CN 201210039014A CN 102563469 A CN102563469 A CN 102563469A
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- light
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- light source
- base plate
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Abstract
The invention discloses a display device and a backlight module of the display device. The backlight module comprises a base plate, a frame, a light guide plate, a light source and a bent elastic piece. The frame is located at one side of the base plate to form a containing space. The light guide plate is arranged in the containing space and comprises a light inlet surface. The light source is arranged at one side of the light inlet surface in the containing space for emitting light towards the light inlet surface. One end of the bent elastic piece is connected with the base plate, and the other end extends into the containing space and elastically presses the light source to abut against the light inlet surface of the light guide plate. With the adoption of the invention, the distance between the side of the light guide plate and the light source is shortened so as to realize the perfect light emitting efficiency of the light guide plate and therefore, enough illuminating light is provided to the liquid crystal panel.
Description
Technical field
The present invention relates to a kind of backlight module, relate in particular to a kind of being used near the backlight module of light source in LGP one side.
Background technology
Backlight module (Back Light Module) is to be liquid crystal indicator (Liquid Crystal Display; LCD) key part and component; Supply brightness light source adequately and uniformly by backlight module, make liquid crystal panel (Liquid Crystal Panel) show image.Backlight module is broadly divided into side-light type and straight-down negative design according to light source position, and wherein the backlight module of side-light type design is that light source is arranged at the LGP side, utilizes LGP control light beam direct of travel again, to provide liquid crystal panel uniform light source.
Yet; When assembling the incidence surface of light source to LGP side; If the incidence surface defective tightness ground of light source and LGP side is pressed close to; Cause between light source and the LGP side producing the gap of not expecting, so, the light extraction efficiency of light beam that LGP provides just can the decline fast along with the increase in crack between the two.
In addition, because the factor of variation of ambient temperature, when environment temperature rises; LGP can expand, and when temperature descended, LGP can shrink; Through after the expanding with heat and contract with cold for several times; Just can make LGP produce offset, and change the gap between LGP and light source, and then the light extraction efficiency of decay LGP.
In view of this, how to develop a kind of backlight module, can effectively improve above-mentioned disappearance of bringing and inconvenience, the relative position of lightguide plate fixing and light source, and then keep the original light extraction efficiency of LGP, be the problem that the professional and technical personnel need address.
Summary of the invention
A purpose of the present invention provides a kind of display unit and backlight module thereof, to provide liquid crystal panel enough illuminating raies.
Another object of the present invention provides a kind of display unit and backlight module thereof, by forcing light source to be close proximity to the idea of LGP side, with the light extraction efficiency of the LGP of avoiding decaying.
One side of the present invention is to disclose a kind of backlight module.Backlight module comprises a base plate, a framework, a LGP, a light source and a bending shell fragment.Framework is positioned at a side of base plate, and centers on an accommodation space.LGP is positioned at accommodation space, and comprises an incidence surface.Light source is positioned at a side of accommodation space, incidence surface, and luminous towards incidence surface.One end of bending shell fragment connects base plate, and the other end stretches in the accommodation space, and flexibly oppresses the incidence surface of light source near LGP.
In one embodiment of the invention, light source comprises a circuit board and a plurality of light-emitting diode component.The one side of circuit board is located in the light-emitting diode component compartment of terrain.During one of this embodiment changed, the other end of bending shell fragment was directly oppressed light-emitting diode component.During another of this embodiment changes, the one side of the relative light-emitting diode component of other end compressing circuit board of bending shell fragment.
In one embodiment of the invention, the backplanes support framework, and LGP and light source are fixed in the framework.
In one embodiment of the invention, bending shell fragment and base plate are one-body molded.This embodiment, base plate more comprise a breach and a photomask.Breach is in abutting connection with the bending shell fragment.Photomask covers breach.
In one embodiment of the invention, the bending shell fragment is a stand-alone assembly, is inserted on the base plate regularly.
In one embodiment of the invention, the bending shell fragment comprises one first part and one second partly.First partly is positioned at an end of shell fragment, extends obliquely towards the direction of accommodation space and LGP from base plate.Second partly is positioned at the other end of shell fragment, in accommodation space, extends obliquely towards the direction of base plate and LGP.Second partly comprises a usefulness so that light source slips into the inclined plane of accommodation space.
Another aspect of the present invention is to disclose a kind of display unit, comprises an above-mentioned backlight module and a liquid crystal panel.Liquid crystal panel is positioned at a side of backlight module.
In sum; Liquid crystal indicator of the present invention and backlight module thereof are in all dwindling the gap between LGP side and the light source as much as possible under any situation; Even reach the zero clearance, realize the comparatively ideal light extraction efficiency of LGP, and then provide liquid crystal panel enough illuminating raies.
Description of drawings
For letting above and other objects of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, appended graphic detailed description be following:
Fig. 1 illustrates the exploded view that changes in one of an embodiment according to backlight module of the present invention.
Fig. 2 illustrates according to backlight module 100 of the present invention in the partial sectional view of the variation of this embodiment.
Fig. 3 is that backlight module of the present invention is in the partial sectional view of another variation of this embodiment.
Fig. 4 is that display unit of the present invention is in the partial cutaway schematic of this embodiment.
[primary clustering symbol description]
10: display unit
100,101: backlight module
200: base plate
210: the bending shell fragment
211: the first partly
212: the second partly
213: connecting portion
214: the inclined plane
220: breach
230: photomask
300: framework
310: accommodation space
400: LGP
410: exiting surface
420: reflecting surface
430: incidence surface
500: light source
510,511: circuit board
520: light-emitting diode component
521: light-emitting area
600: reflecting piece
700: liquid crystal panel
D1, D2: direction
The specific embodiment
Below will and specify and clearly demonstrate spirit of the present invention, as be familiar with these technological personnel behind the understanding embodiments of the invention with diagram, when can be by the technology of teachings of the present invention, change and modification, it does not break away from spirit of the present invention and scope.
Because when the incidence surface defective tightness ground of light source and LGP side is pressed close to, the gap that is produced between light source and the LGP will cause the light extraction efficiency of light beam that LGP provides to descend.In view of this, the present invention provides a kind of display unit and backlight module thereof, and stretch into and oppress light source by a bending shell fragment of a base plate and be close proximity to the LGP side to force light source, and then the light extraction efficiency of the LGP of avoiding decaying.
See also Fig. 1 and shown in Figure 2, the exploded view that Fig. 1 changes in one of an embodiment for backlight module of the present invention.Fig. 2 is that backlight module 100 of the present invention is in the partial sectional view of the variation of this embodiment.
Among this embodiment, backlight module 100 comprises a base plate 200, a reflecting piece 600, a framework 300, a LGP 400 and a light source 500.Framework 300, for example the glue frame centers on an accommodation space 310 in it.LGP 400 is fixed in the accommodation space 310 of framework 300 with light source 500.Light source 500 is positioned at the side of LGP 400, and luminous towards LGP 400.Framework 300 is positioned at a side of base plate 200, and receives the support of base plate 200.Backlight module 100 more comprises a bending shell fragment 210, and an end of bending shell fragment 210 connects base plate 200, and the other end stretches in the accommodation space 310 outside accommodation space 310, and flexibly oppresses the side of light source 500 near LGP 400.
LGP 400 for example can be uniform rectangular slab of a thickness or a thickness and has opposite front and reverse side by big to little clapboard, and four sides positive around it and reverse side, and the area of its front or reverse side is all greater than the area of arbitrary side wherein.Any side of LGP 400 all can be one in order to be guided into the incidence surface 430 that light gets into LGP 400.The front of LGP 400 is an exiting surface 410, and exiting surface 410 is in order to see light off.The reverse side of LGP 400 is a reflecting surface 420, and reflecting surface 420 is in order to reflection ray to exiting surface 410.Reflecting piece 600 is between the reflecting surface 420 and base plate 200 of LGP 400, in order to reflection ray to exiting surface 410.
Among this embodiment, base plate 200 for example is a metal backing or a plastic back plate, is positioned at the side of LGP 400 away from exiting surface 410, to support or to seize on both sides by the arms framework 300 and LGP 400.
In addition, in the option of this embodiment, the area of base plate 200 can be contained framework 300 and accommodation space 310 (comprising light source 500 and LGP 400 in the accommodation space 310) all sidedly more than or equal to the area of framework 300.
In another option, the area of base plate 200 can only be contained the part position (not shown) of framework 300 less than the area of framework 300, for example cover body or U font ironware.Yet, the invention is not restricted to this.
Among this embodiment, bending shell fragment 210 stretches into accommodation space 310 between the zone of framework 300 with light source 500, comprises one first part, 211,1 second part 212 and a junction 213.First part 211 promptly bends an end of shell fragment 210, and the direction D1 from base plate 200 towards accommodation space 310 and light source 500 (or LGP 400) (like the upper right side among the figure) extends obliquely.Second part 212 promptly bends the other end of shell fragment 210, towards direction D2 (like the lower right among the figure) extension obliquely of base plate 200 and light source 500 (or LGP 400).Connecting portion 213 is connected in first partly between 211 and second part 212, to strengthen the structural capacity of bending shell fragment 210.In addition, second part, 212 one sides near light source 500 comprise an inclined plane 214, when this inclined plane 214 makes things convenient for light source 500 to install, slip in the accommodation space 310.
So, when assembling, when light source 500 slipped in the accommodation space 310 by inclined plane 214, after light source 500 forced 210 deformation of bending shell fragment to produce a restoring force, restoring force just can make bending shell fragment 210 continuous elastic ground compressing light source 500.
What need explanation is that the bending shell fragment is not limited to above-mentioned external form, as long as a shell fragment of base plate is stretched into accommodation space, and it is tilted towards light source direction, so that continue to this light source one elastic stress to be provided, forces this light source to get final product towards the direction compressing of LGP.In addition; The designer can be according to the quantity and the position of light emitting diode; The bending shell fragment of difformity or quantity is provided, and for example, the bending shell fragment can be a strip (direction towards vertical paper is extended) or a plurality of bending shell fragment that is separated (direction towards vertical paper is spaced).
Among other embodiment, second partly 212 can be designed to circular-arcly in order to the end that presses light source 500, perhaps can add a blob of viscose, damages by pressure or scratch light source 500 avoiding.
Continue to consult shown in Figure 1, light source 500 comprise a circuit board 510 and a plurality of light-emitting diode component 520 (light emitting diode, LED).Because the graphic of this specification is cutaway view, thus only can see a wherein light-emitting diode component in graphic, but light source 500 not only comprises a light-emitting diode component 520, but comprise a plurality of light-emitting diode components 520.The one side of circuit board 510 is located in these light-emitting diode component 520 compartment of terrains.The light-emitting area 521 of these a little light-emitting diode components 520 is common in the face of above-mentioned incidence surface 430, and luminous towards this incidence surface 430 jointly.
Further, during one of this embodiment changed, light-emitting diode component 520 was the light-emitting diode component 520 (side-view type LED) of a side emission type.Be arranged to these a little light emitting diode linear array on this circuit board 510 to constitute a lamp bar (light bar).Circuit board 510 is positioned at outside the accommodation space 310, and only these light-emitting diode components 520 stretch in the accommodation space 310, makes that second of bending shell fragment 210 partly 212 can directly be oppressed light-emitting diode component 520.In the variation of this embodiment; It is rigid printed circuit board (PCB) (printed circuit board that circuit board 510 is not limit kind; PCB), metal substrate (metal core printed circuit board; MCPCB) or soft printed circuit board (flexible printed circuit board, FPC).
Consult shown in Figure 3, Fig. 3 for backlight module 101 of the present invention in the cutaway view of another variation of this embodiment.
During another of this embodiment changed, light-emitting diode component 520 was the light-emitting diode component (Top-view type LED) of a top emission type.Be arranged to these light emitting diode linear array on this circuit board 511 to constitute a lamp bar (light bar); And circuit board 511 all is positioned at accommodation space 310 with light-emitting diode component 520, makes second part 212 of bending shell fragment 210 directly oppress the one side of circuit board 511 relative light-emitting diode components 520.In the variation of this embodiment; It is rigid printed circuit board (PCB) (printed circuit board that circuit board 511 is not limit kind; PCB), metal substrate (metal core printed circuit board; MCPCB) or soft printed circuit board (flexible printed circuit board, FPC).
In the another embodiment of the present invention, bending shell fragment 210 can be designed to base plate 200 one-body molded.Specifically, when being metal material, can carry out the punching press program, make that the bending shell fragment 210 of the above-mentioned external form of a tool just can be processed fast base plate 200 as if base plate 200.Because bending shell fragment 210 is after the punching press program is formed, the adjoining position of base plate 200 corresponding bending shell fragments 210 just forms a breach 220, cause light leak for avoiding this breach 220, but mat one photomask 230 covers this breach 220.
Yet the present invention is not limited only to this, and among the another embodiment of the present invention, bending shell fragment 210 can be designed to and base plate 200 moulding respectively.Specifically, after 210 moulding of bending shell fragment, will bend shell fragment 210 and be inserted in regularly on the base plate 200.
Consult shown in Figure 4, Fig. 4 for display unit 10 of the present invention in the generalized section of this embodiment.
Another aspect of the present invention is to disclose a kind of display unit 10.Display unit 10 comprises an above-mentioned backlight module 100 and a liquid crystal panel 700.Liquid crystal panel 700 is positioned at the side of backlight module 100 back to base plate 200.So, because a bending shell fragment 210 of base plate 200 stretches into compressing light source 500 in the accommodation space 310, be close proximity to LGP 400 sides to force light source 500, display unit of the present invention just can have LGP 400 due light extraction efficiencies.
In sum; Liquid crystal indicator of the present invention and backlight module thereof are in all dwindling the gap between LGP side and the light source as much as possible under any situation; Even reach the zero clearance, realize the comparatively ideal light extraction efficiency of LGP, and then provide liquid crystal panel enough illuminating raies.In addition, when test LGP, carrying LGP or LGP temperature influence and the contraction of expanding, and possibly change the spacing of LGP and these light emitting diodes the time; For example: when environment temperature rose, LGP can expand, and when temperature descends; LGP then can shrink, and through after the expanding with heat and contract with cold for several times, just can make LGP produce offset; And the gap between change LGP and light source; Yet, because bending shell fragment, the present invention can the compressing of one stress be provided constantly to light source, make LGP can keep next-door neighbour's relation with the light-emitting area of light source
In the preceding text, illustrate and describe the specific embodiment of the present invention.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also specific embodiments of the invention do various changes and replacement.These changes and replacement all drop in claims of the present invention institute restricted portion.
Claims (10)
1. a backlight module is characterized in that, comprises:
One base plate;
One framework is positioned at said base plate one side, and around an accommodation space;
One LGP is positioned at said accommodation space, and comprises an incidence surface;
One light source is positioned at said accommodation space, said incidence surface one side, and luminous towards said incidence surface; And
One bending shell fragment, the one of which end connects said base plate, and its other end stretches in the said accommodation space, and flexibly oppresses the said incidence surface of said light source near said LGP.
2. backlight module as claimed in claim 1 is characterized in that, said bending shell fragment and said base plate are one-body molded.
3. backlight module as claimed in claim 2 is characterized in that, said base plate more comprises:
One breach is in abutting connection with said bending shell fragment; And
One photomask covers said breach.
4. backlight module as claimed in claim 1 is characterized in that, said bending shell fragment is a stand-alone assembly, is inserted in regularly on the said base plate.
5. backlight module as claimed in claim 1 is characterized in that, said light source comprises:
One circuit board; And
A plurality of light-emitting diode components, compartment of terrain are located at the one side of said circuit board, and the said other end that wherein in fact bends shell fragment is directly oppressed said light-emitting diode component.
6. backlight module as claimed in claim 5 is characterized in that, said light source comprises:
One circuit board; And
A plurality of light-emitting diode components, compartment of terrain are located at the one side of said circuit board, and the said other end of wherein said bending shell fragment is oppressed the one side of the said relatively light-emitting diode component of said circuit board.
7. backlight module as claimed in claim 1 is characterized in that, said bending shell fragment comprises:
One first partly, is positioned at the said end of said shell fragment, extends obliquely towards the direction of said accommodation space and said light supply apparatus from said base plate; And
One second partly, is positioned at the said end in addition of said shell fragment, in said accommodation space, extends obliquely towards the direction of said base plate and said light supply apparatus.
8. backlight module as claimed in claim 1 is characterized in that, said second partly comprises a usefulness so that said light source slips into the inclined plane of said accommodation space.
9. backlight module as claimed in claim 1 is characterized in that, the said framework of said backplanes support, and said LGP and said light source are fixed in the said framework.
10. a display unit is characterized in that, comprises:
Just like the described backlight module of the arbitrary claim of claim 1 to 9; And
One liquid crystal panel is positioned at a side of said backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039014.5A CN102563469B (en) | 2012-02-17 | 2012-02-17 | Display device and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039014.5A CN102563469B (en) | 2012-02-17 | 2012-02-17 | Display device and backlight module thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102563469A true CN102563469A (en) | 2012-07-11 |
| CN102563469B CN102563469B (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210039014.5A Expired - Fee Related CN102563469B (en) | 2012-02-17 | 2012-02-17 | Display device and backlight module thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148407A (en) * | 2012-08-24 | 2013-06-12 | 景智电子股份有限公司 | Backlight module |
| CN104246359A (en) * | 2012-03-09 | 2014-12-24 | 苹果公司 | Backlight structures and backlight assemblies for electronic device displays |
| CN104896370A (en) * | 2015-05-29 | 2015-09-09 | 南京中电熊猫液晶显示科技有限公司 | LED backlight module |
| CN105629551A (en) * | 2016-03-28 | 2016-06-01 | 青岛海信电器股份有限公司 | Display device |
| CN105700229A (en) * | 2014-12-10 | 2016-06-22 | 乐金显示有限公司 | Backlight unit and liquid crystal display device including the same |
| CN106678562A (en) * | 2017-01-23 | 2017-05-17 | 彩虹奥特姆（湖北）光电有限公司 | Device with gap between lamp plate supporting piece and light guiding plate constant |
| US9805630B2 (en) | 2012-03-09 | 2017-10-31 | Apple Inc. | Light guide structures for display backlights |
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| CN101441358A (en) * | 2007-11-19 | 2009-05-27 | 奇力光电科技股份有限公司 | Backlight module unit |
| JP2009158233A (en) * | 2007-12-26 | 2009-07-16 | Omron Corp | Light source device, and liquid crystal display device |
| JP2011034692A (en) * | 2009-07-30 | 2011-02-17 | Casio Computer Co Ltd | Backlight device and liquid crystal display device |
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| KR20070058183A (en) * | 2005-12-01 | 2007-06-08 | 삼성전자주식회사 | Liquid crystal display device |
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| JP2009158233A (en) * | 2007-12-26 | 2009-07-16 | Omron Corp | Light source device, and liquid crystal display device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246359A (en) * | 2012-03-09 | 2014-12-24 | 苹果公司 | Backlight structures and backlight assemblies for electronic device displays |
| US9805630B2 (en) | 2012-03-09 | 2017-10-31 | Apple Inc. | Light guide structures for display backlights |
| CN103148407A (en) * | 2012-08-24 | 2013-06-12 | 景智电子股份有限公司 | Backlight module |
| CN105700229A (en) * | 2014-12-10 | 2016-06-22 | 乐金显示有限公司 | Backlight unit and liquid crystal display device including the same |
| CN105700229B (en) * | 2014-12-10 | 2019-03-26 | 乐金显示有限公司 | Back light unit and liquid crystal display device including the back light unit |
| CN104896370A (en) * | 2015-05-29 | 2015-09-09 | 南京中电熊猫液晶显示科技有限公司 | LED backlight module |
| CN104896370B (en) * | 2015-05-29 | 2019-01-04 | 南京中电熊猫液晶显示科技有限公司 | A kind of LED backlight mould group |
| CN105629551A (en) * | 2016-03-28 | 2016-06-01 | 青岛海信电器股份有限公司 | Display device |
| CN106678562A (en) * | 2017-01-23 | 2017-05-17 | 彩虹奥特姆（湖北）光电有限公司 | Device with gap between lamp plate supporting piece and light guiding plate constant |
| CN106678562B (en) * | 2017-01-23 | 2019-10-08 | 彩虹奥特姆（湖北）光电有限公司 | A kind of lamp plate supporting piece and the constant device in light guide plate gap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102563469B (en) | 2014-05-28 |
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