CN101556007B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN101556007B CN101556007B CN2009101393350A CN200910139335A CN101556007B CN 101556007 B CN101556007 B CN 101556007B CN 2009101393350 A CN2009101393350 A CN 2009101393350A CN 200910139335 A CN200910139335 A CN 200910139335A CN 101556007 B CN101556007 B CN 101556007B
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- base plate
- light sources
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Abstract
The invention provides a backlight module and a display device; the backlight module comprises a base board, a plurality of light sources and a light guiding plate; the base board comprises a side wall, a top plate and a bottom plate; the top plate and the bottom plate stretch in the same direction respectively from the upper end and the lower end of the side wall, wherein the top plate, the side wall and the bottom plate jointly forms a holding space; and the end edge of the top plate and the bottom plate form an opening of the holding space; a plurality of light sources are arranged in the holding space and electrically arranged on the base plate; and the luminous surfaces of the light sources face the opening; the light incident surface of the light guiding plate is adjacent to the luminous surfaces of the light sources; the end edge of the top plate and the bottom plate are used for clamping the light guiding plate. The invention utilizes a circuit board to make a lamp cover, thus saving adhesive tape and a lamp cover, simplifying assembly and lowering cost, and also can realize multi-row assembly of LED and adapt to machines of different sizes.
Description
Technical field
The present invention relates in particular to a kind of module backlight and display unit of utilizing circuit board to replace lampshade about a kind of module backlight and display unit.
Background technology
Because display panels (LCD Panel) thin thickness, light weight and easy to carry are compared the advantage that CRT monitor has low radiation, the feasible quicker increase of demand in recent years.Module particularly backlight (Backlight Module) is one of key spare part of display panels.Along with the lifting of LCD manufacturing technology, module backlight is more towards thin typeization, high brightness and the development of the market direction that reduces cost.For keeping the competitiveness of LCD future market, develop and design the more module backlight of high-quality, be the following direction that needs effort.
See also Fig. 1, Figure 1 shows that the schematic diagram of module backlight of the prior art.The group 1 of touching backlight comprises lampshade 2, LED optical strip (LED Light Bar) and LGP 4.Lampshade 2 includes sidewall 21, top board 22 and base plate 23.Top board 22 and base plate 23 stretch out in the same way from the two ends up and down of sidewall 21 respectively, to surround accommodation space A.LED optical strip is made up of the light emitting diode 3 of flexible printed wiring board 5 and upward setting thereof.Please continue referring to Fig. 1, LED optical strip is arranged in the accommodation space A that lampshade 2 surrounds, and extends along the long side direction of lampshade 2.With the luminous LED optical strip of sidepiece shown in Fig. 1, flexible printed wiring board 5 is attached at the base plate 23 of lampshade 2, so that the light-emitting area 31 of light emitting diode 3 sidepieces is able to penetrate light towards the opening B of 23 of the top board 22 of lampshade 2 and base plates.In the time of in being assembled in module 1 backlight, the side 41 of LGP 4 stretches into the opening B of 23 of top board 22 and base plates, and be top board 22 and base plate 23 clampings, to receive the light that light emitting diode 3 sends, wherein just to face the side 41 of LGP 4 be incidence surface to the light-emitting area 31 of light emitting diode 3.When light emitting diode 3 is driven when luminous, its light just can be by side 41 light inlets of LGP 4, and via LGP 4 with its under the effect of reflecting plate (not shown), making light is exiting surface 42 bright dippings by the end face of LGP 4.
As mentioned above, LED optical strip is to separate to make with lampshade 2 in the prior art, needs during assembling with adhesive tape LED Light Bar to be fixed on the lampshade 2, assembles very loaded down with trivial details.In addition, for the module backlight of side-light type, LED generally is single putting, and this module backlight is applied to small size (as below 7 cun) display screen product, has good effect in the utilization of light source.Yet, along with in, the development of large scale (more than 15～24 cun) display screen product, the size of module backlight also must strengthen thereupon, the single module of putting backlight of this LED can not meet the demands.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of module backlight, utilize circuit board to make lampshade, save adhesive tape and lampshade, simplify assembling and save cost, and can realize many row's assemblings of LED, adapt to the machine of different size.
For reaching above-mentioned purpose, the invention provides a kind of module backlight, this module backlight comprises substrate, a plurality of light source and LGP.This substrate comprises sidewall, top board and base plate, and top board and base plate extend in the same way from the two ends up and down of this sidewall respectively, and wherein this top board, this sidewall and this base plate surround accommodation space jointly, and forms the opening of described accommodation space between the ora terminalis of this top board and this base plate.A plurality of light sources are positioned at this accommodation space and electrically are arranged on this substrate, and the light-emitting area of those light sources is towards this opening.The incidence surface of this LGP is adjacent with this light-emitting area, and the ora terminalis of this top board and this base plate are used to seize on both sides by the arms this LGP.
As optional technical scheme, this substrate is a flexible printed wiring board.
As optional technical scheme, this substrate is a printed circuit board (PCB).
As optional technical scheme, those light sources are arranged at this sidewall of this substrate.
As optional technical scheme, those light sources are arranged at this base plate of this substrate.
As optional technical scheme, those light sources are arranged at this top board of this substrate.
As optional technical scheme, also comprise the reflecting layer, be arranged at the inwall of this substrate, and reflect the light that this light source produces towards this accommodation space.
As optional technical scheme, this light source is a light emitting diode.
The present invention also provides a kind of display unit, and this display unit comprises aforesaid module backlight.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Description of drawings
Figure 1 shows that the schematic diagram of module backlight of the prior art;
Figure 2 shows that schematic diagram according to first embodiment of module backlight of the present invention;
Figure 3 shows that schematic diagram according to second embodiment of module backlight of the present invention;
Figure 4 shows that schematic diagram according to the 3rd embodiment of module backlight of the present invention.
The specific embodiment
The invention provides a kind of module backlight for the display unit use.With better embodiment, module backlight of the present invention is arranged in the display unit, produces the essential light source of image so that display unit to be provided.The preferable liquid crystal indicator that comprises of display unit comprises the LCD Panel etc. of LCD, mobile phone and digital camera of LCD TV, PC and the kneetop computer of family expenses.
See also Fig. 2, Figure 2 shows that schematic diagram according to first embodiment of module backlight of the present invention.Module backlight 10 of the present invention comprises substrate 11, a plurality of light source 12 and LGP 13.Substrate 11 comprises sidewall 14, top board 15 and base plate 16, and top board 15 and base plate 16 extend in the same way from the two ends up and down of sidewall 14 respectively.Wherein substrate 11 is preferably flexible printed wiring board (FPC), but in different embodiments, substrate 11 also can be the material of printed circuit board (PCB) (PCB) or other type.Substrate 11 is preferably by the FPC panel-bending and makes, but in different embodiments, can also make with shoot mode by plastics.Substrate is preferably the structure that forms strip, and is that the axis volume encloses and forms approximate inverted U-shaped section shape or the grooved kink of side with the long side direction of this strip structure.Concrete, the two ends up and down that are about to substrate 11 bend towards the same side with formation top board 15 and base plate 16, the part that sidewall 14 does not then bend for the stage casing, and promptly top board 15 and base plate 16 extend in the same way from the two ends up and down of sidewall 14 respectively.Wherein top board 15, sidewall 14 and base plate 16 surround semi-open accommodation space C jointly, and the ora terminalis of top board 15 and 16 opening D that form accommodation space C of base plate, and accommodation space C is along the long side direction prolongation distribution of substrate 11.
Please continue referring to Fig. 2, a plurality of light sources 12 are positioned at accommodation space C and electrically are arranged on the substrate 11, and extend along the long side direction of accommodation space C and to be provided with and to emit beam towards the opening D of accommodation space C, and promptly the light-emitting area 17 of those light sources 12 is towards opening D.In this better embodiment, light source 12 is a light emitting diode, and each light emitting diode 12 distributes along the long side direction of accommodation space C, that is arranged in a straight line along opening.Light emitting diode 12 for example can utilize the mode of welding or pressing to combine with substrate 11.Please continue referring to Fig. 2, in the present embodiment, a plurality of light sources 12 are that light emitting diode is arranged on the sidewall 14 of substrate 11, and wherein light emitting diode 12 is the top emission type light emitting diode, forming at least one light-emitting diode light bar, luminous with the direction of the sidewall 14 of vertical substrate 11.In addition, can be that the demand of different size machine is provided with many row's light sources 12 according to the actual needs of display unit, be example so that two row's light sources 12 to be set in the present embodiment.
In addition, module 10 backlight also includes LGP 13, LGP 13 has incidence surface 18, the light that light emitting diode 12 is sent by light-emitting area 17 can enter the incidence surface 18 of LGP 13, can evenly be directed to the exiting surface 19 of LGP 13 afterwards, provide even and bright light source to display floater through blooming piece (not illustrating).And the incidence surface 18 of LGP 13 is adjacent with light-emitting area 17, and the ora terminalis of top board 15 and base plate 16 are used to seize on both sides by the arms LGP 13.Wherein, LGP 13 for example can utilize the method for ejection formation, with polymethyl methacrylate (Polymethyl Methacrylate, transparent light guide material such as PMMA), make smooth surface or have the class wedge shape of pattern, site or the plate of class rectangle, but the present invention is not as limit.
And, the top board 15 of substrate 11 and the length of base plate 16 can be identical also can be inequality, person skilled can be adjusted length, ratio, material and the configuration of top board 15 and base plate 16 according to actual demand.In better embodiment, the length of top board 15 and base plate 16 is extended by the both sides of substrate 11, regional area with the exiting surface 19 of containing LGP 13 at least and the side relative with exiting surface 19, for example: adjust the regional area that top board 15 is contained the exiting surface 19 of LGP 13, can reach to omit and paste the shading rubber belt or the step of spraying paint, to reduce the effect that edge light leak and processing procedure are simplified.In other embodiments, the side that the bottom surface that base plate 16 may extend to whole LGP 13 is promptly relative with exiting surface 19, and base plate 16 has reflective surface will, thereby base plate 16 can replace reflector plate (not illustrating) and improve the light source utilization rate, reaches to reduce cost and purpose that processing procedure is simplified.In the better embodiment, the top board 15 of substrate 11 and base plate 16 clamping light guide boards 13 make the not displacement or the skew easily of relative position of LGP 13 and substrate 11.Because the light-emitting area 17 of light emitting diode 12 can be positioned at substrate 11 with the part that the incidence surface 18 of LGP 13 joins, the light leak problem that therefore can avoid liquid crystal indicator to cause LGP 13 to produce with the light source assembly dislocation when being subjected to torsion.On the other hand, because substrate 11 is adjusted relative position with LGP 13 by the mode of clamping, make the light-emitting area 17 that the incidence surface 18 of LGP 13 can more close light emitting diode 12.
In addition, module 10 backlight also comprises the reflecting layer (not shown), is arranged at the inwall of substrate 11 towards accommodation space C, and the light of reflection source 12 generations, to increase the utilization ratio of light.The reflecting layer is the inwall that is formed at sidewall 14, top board 15 and base plate 16 in the present embodiment, but also can only be formed on one of them.Therefore substrate 11 also can be used as lampshade to a certain extent.The base plate 16 of substrate 11 also can be in order to replace reflector plate (not illustrating).In addition, the reflecting layer can utilize the light reflection material that adds to form, and for example is coated with the reflectivity material, attaches the reflectance coating plating; And if the materials of substrate 11 itself are when being the tool light reflectance properties, also can be directly with inner face own as the reflecting layer.In the present embodiment, printed circuit board (PCB) promptly has light reflectance properties as substrate 11, thus can be directly with itself inwall as the reflecting layer.At this only is for example, but the invention is not restricted to this, and person skilled also can be adjusted the generation type of reflective surface will according to actual demand.
Same, the present invention is not exceeded with first embodiment, and person skilled also can be adjusted the configuration mode that light source is a light emitting diode 12 according to actual demand.For example, adopt the sidepiece light-emitting diode (led), on the corresponding base plate 15 or top board 16 that light emitting diode 12 are fixed on substrate 11, perhaps on base plate 15 and top board 16, be provided with light emitting diode 12, luminous with the direction of the sidewall 14 of vertical substrate 11.
See also Fig. 3, Figure 3 shows that module backlight second embodiment of the invention.In the present embodiment, the light source 22 of module 20 backlight is arranged at the base plate 16 of substrate 11, and this moment, light source 22 was that light emitting diode is a led of side view type, and is luminous with the direction of the sidewall 14 of vertical substrate 11.Present embodiment is except that the allocation position of light source 22, and all the other structures and configuration are all similar to first embodiment, thereby no longer describes at this.
See also Fig. 4, Figure 4 shows that module backlight according to the 3rd embodiment of the present invention.In the present embodiment, the light source 32 of module 30 backlight is arranged at the top board 15 of substrate 11, and this moment, light source 32 was that light emitting diode is a led of side view type, and is luminous with the direction of the sidewall 14 of vertical substrate 11.Present embodiment is except that the allocation position of light source 32, and all the other structures and configuration are all similar to first embodiment, thereby no longer describes at this.
In addition, module 10 backlight also includes the glue frame, and the glue frame is around the outside of light source assembly and LGP 13, and positioned light source assembly and LGP 13, light source assembly are then between glue frame and LGP 1.
In sum, the present invention utilizes circuit board to make lampshade, saves adhesive tape and lampshade, simplifies assembling, saves cost, and can realize many row's assemblings of LED, adapts to the machine of different size.
By the detailed description of the above specific embodiment, be to wish to know more to describe feature of the present invention and spirit, and be not to come claim scope of the present invention is limited with the above-mentioned disclosed specific embodiment.On the contrary, its objective is that hope can contain in being arranged in of various changes and the tool equality claim scope of the present invention.Therefore, claim scope of the present invention should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.
Claims (10)
1. a module backlight is characterized in that this module backlight comprises
Substrate, this substrate comprises
Sidewall; And
Top board and base plate extend in the same way from the two ends up and down of this sidewall respectively, and wherein this top board, this sidewall and this base plate surround accommodation space jointly, and form the opening of described accommodation space between the ora terminalis of this top board and this base plate;
A plurality of light sources are positioned at this accommodation space and also electrically are arranged on this substrate, and the light-emitting area of those light sources are towards this opening; And
LGP, the incidence surface of this LGP is adjacent with this light-emitting area, and the ora terminalis of this top board and this base plate are used to seize on both sides by the arms this LGP.
2. module backlight as claimed in claim 1 is characterized in that this substrate is a flexible printed wiring board.
3. module backlight as claimed in claim 1 is characterized in that this substrate is a printed circuit board (PCB).
4. module backlight as claimed in claim 1 is characterized in that those light sources are arranged at this sidewall of this substrate.
5. module backlight as claimed in claim 1 is characterized in that those light sources are arranged at this base plate of this substrate.
6. module backlight as claimed in claim 1 is characterized in that those light sources are arranged at this top board of this substrate.
7. module backlight as claimed in claim 1 is characterized in that also comprising the reflecting layer, is arranged at the inwall of this substrate towards this accommodation space, and reflects the light that those light sources produce.
8. module backlight as claimed in claim 1 is characterized in that the setting that is formed in one of this sidewall, this top board and this base plate.
9. module backlight as claimed in claim 1 is characterized in that this light source is a light emitting diode.
10. a display unit is characterized in that this display unit comprises any described module backlight as claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101393350A CN101556007B (en) | 2009-04-30 | 2009-04-30 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101393350A CN101556007B (en) | 2009-04-30 | 2009-04-30 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101556007A CN101556007A (en) | 2009-10-14 |
| CN101556007B true CN101556007B (en) | 2010-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101393350A Expired - Fee Related CN101556007B (en) | 2009-04-30 | 2009-04-30 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101556007B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788328A (en) * | 2012-07-24 | 2012-11-21 | 深圳市华星光电技术有限公司 | Liquid crystal display device, as well as backlight module and back plate assembly thereof |
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| CN102032511B (en) * | 2010-10-13 | 2012-07-04 | 友达光电股份有限公司 | Backlight module and liquid crystal display module |
| JP5641334B2 (en) * | 2011-01-26 | 2014-12-17 | Ｎｌｔテクノロジー株式会社 | Illumination device and liquid crystal display device |
| TWI432836B (en) | 2011-01-28 | 2014-04-01 | Chunghwa Picture Tubes Ltd | Liquid crystal module and method for assembling the same |
| CN102103280A (en) * | 2011-02-24 | 2011-06-22 | 华映视讯（吴江）有限公司 | Liquid crystal module and assembling method thereof |
| US8780295B2 (en) * | 2011-03-28 | 2014-07-15 | Tsmc Solid State Lighting Ltd. | Light cavity that improves light output uniformity |
| TWI439768B (en) * | 2011-06-27 | 2014-06-01 | Au Optronics Corp | Backlight module and method for manufacturing the same |
| CN102425744A (en) * | 2011-11-24 | 2012-04-25 | 创维液晶器件(深圳)有限公司 | Backlight module and liquid crystal display |
| CN102606922A (en) * | 2012-03-02 | 2012-07-25 | 睿鸿光电科技(福建)有限公司 | High-efficiency lateral-incidence LED panel lamp |
| CN102588796A (en) * | 2012-03-02 | 2012-07-18 | 睿鸿光电科技(福建)有限公司 | Fastened round LED lamp |
| CN102767759B (en) * | 2012-07-04 | 2015-07-15 | 深圳市华星光电技术有限公司 | Liquid crystal display device and backlight module thereof |
| US9030642B2 (en) | 2012-09-11 | 2015-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display device |
| CN102799023B (en) * | 2012-09-11 | 2015-02-04 | 深圳市华星光电技术有限公司 | Liquid crystal display (LCD) device |
| CN103791307A (en) * | 2012-10-26 | 2014-05-14 | 奇菱光电股份有限公司 | Display device and backlight module thereof |
| CN107942580A (en) * | 2017-11-15 | 2018-04-20 | 武汉华星光电技术有限公司 | Ultra-narrow frame backlight module and display device |
| JP7083255B2 (en) * | 2018-02-07 | 2022-06-10 | シャープ株式会社 | Light emitting device, display device and board |
| CN117233883A (en) * | 2023-11-13 | 2023-12-15 | 合肥联宝信息技术有限公司 | Narrow frame design method and frame assembly of display |
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| KR20080084175A (en) * | 2007-03-15 | 2008-09-19 | 엘지이노텍 주식회사 | Back light unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102788328A (en) * | 2012-07-24 | 2012-11-21 | 深圳市华星光电技术有限公司 | Liquid crystal display device, as well as backlight module and back plate assembly thereof |
| CN102788328B (en) * | 2012-07-24 | 2014-08-20 | 深圳市华星光电技术有限公司 | Liquid crystal display device, as well as backlight module and back plate assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101556007A (en) | 2009-10-14 |
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Granted publication date: 20101013 Termination date: 20140430 |