CN202546445U - Light mixing strip, line light source assembly, backlight source and liquid crystal display device - Google Patents
Light mixing strip, line light source assembly, backlight source and liquid crystal display device Download PDFInfo
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- CN202546445U CN202546445U CN2012200888688U CN201220088868U CN202546445U CN 202546445 U CN202546445 U CN 202546445U CN 2012200888688 U CN2012200888688 U CN 2012200888688U CN 201220088868 U CN201220088868 U CN 201220088868U CN 202546445 U CN202546445 U CN 202546445U
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Abstract
The utility model provides a light mixing strip, a line light source assembly, a backlight source and a liquid crystal display device and belongs to the technical field of liquid crystal display, and the problems of high bad hot spot generation possibility, bad universality and high cost of the current light guide plate are solved. The light mixing strip provided by the utility model comprises a light entrance side, a light emission side opposite to the light entrance side, and a light mixing structure used for homogenizing the light entering from the light entrance side and exiting from the light emission side. The line light source assembly, the backlight source and the liquid crystal display device provided by the utility model comprise the light mixing strip, respectively. The light mixing strip provided by the utility model can be applied to the liquid crystal display device, especially a liquid crystal display device utilizing a side light entrance type LED (Light Emitting Diode) backlight source.
Description
Technical field
The utility model belongs to technical field of liquid crystal display, is specifically related to a kind of mixed light bar, line source assembly, backlight, liquid crystal indicator.
Background technology
Backlight is the significant components of liquid crystal indicator, and in various backlights, side incident type LED-backlit source has obtained very to use widely.Side incident type LED-backlit source mainly comprises LGP and LED lamp bar, and LED lamp bar is located at outside the incidence surface (side surface) of LGP, and its light that sends is injected LGP after the liquid crystal display mode group is penetrated and got into to reflection from LGP exiting surface (upper surface) from incidence surface.
As shown in Figure 1, LED lamp bar 2 is made up of strip wiring board 21 and a plurality of arrangements LED luminescence unit 22 in the circuit board.Obviously; LED luminescence unit 22 is a kind of spot light, so LED lamp bar 2 is not real line source, but " approximate " line source of forming by a plurality of spot lights; The light intensity of injecting LGP 1 diverse location place by LED lamp bar 2 sends is unequal; Thereby can produce hot spot bad (claim the firefly phenomenon again, promptly on the screen with LED luminescence unit 22 over against position brightness high, and all the other position brightness are low) or the light inlet shadow (claim the corner shadow; The brightness that is screen edge is lower), all the more so when the negligible amounts (density is lower in other words) of LED luminescence unit 22 in the LED lamp bar 2.
For addressing this problem; As shown in Figure 1; Also be provided with " light-mixing structure " on the existing LGP 1; Light-mixing structure mainly comprises the micro-scattering structure 11 that is positioned on LGP 1 incidence surface, and micro-scattering structure 11 can make the light generation scattering through incidence surface, thereby improves the uniformity of light that gets into LGP 2.Usually micro-scattering structure 11 is made up of a large amount of tiny waveform groove (claiming V-shaped groove, V-cut again), and waveform groove is that the cross section is the groove of V font or approximate V font, can become corrugated surface or serrated face so be provided with the surperficial reality of waveform groove.
The inventor finds to exist at least in the prior art following problem: because the micro-scattering structure is very tiny; Be difficult to through follow-up machining manufacturing; Can only be integrally formed when the LGP injection mo(u)lding (can realize) through corresponding corrugated surface is set on injection mold; Therefore for the LGP of non-injection mo(u)ldings such as large-size light-conducting plate, printing LGP, also just be difficult to even can't form light-mixing structure, cause problems such as its hot spot is bad to solve; And, for reaching better dispersion effect, the micro-scattering structure at LGP incidence surface diverse location place and (for example the degree of depth of waveform groove, distribution density etc. can be different) inequality; Be that light-mixing structure is relevant with position, the quantity of LED luminescence unit; Therefore, when being used, even measure-alike LGP also must be with the different dies manufacturing to form different micro-scattering structures with different LED lamp bars; This causes the versatility of LGP poor; Must be corresponding one by one with LED lamp bar, production routine is complicated, and cost is high; In addition, light-mixing structure is relatively complicated, in injection moulding, easy quality defects when using, in case and light-mixing structure goes wrong, whole LGP all must be scrapped, and causes cost to raise and waste of material.
The utility model content
The utility model technical problem to be solved comprises, is prone to the problem that hot spot is bad, versatility is poor, cost is high to the LGP in LED-backlit source in the prior art, and a kind of mixed light bar is provided.
The technical scheme that solution the utility model technical problem is adopted is a kind of mixed light bar, comprising:
Incident side;
The bright dipping side relative with said incident side;
Be used to make the light-mixing structure of the light uniformization of injecting and penetrating from the bright dipping side from said incident side.
The mixed light bar of the utility model has light-mixing structure, can make the light uniformization of injecting LGP so it is located between LGP and the LED lamp bar.Because the mixed light bar is individual components, so it can be used for the LGP that large-size light-conducting plate, printing LGP etc. can not injection mo(u)ldings, eliminates the bad or light inlet shadow of hot spot of these LGPs; And when measure-alike LGP cooperated with different LED lamp bars, as long as use different mixed light bars, LGP can be identical, thereby improved the versatility of LGP; In addition, when light-mixing structure goes wrong, as long as change the mixed light bar, and needn't change LGP, thereby reduce cost and material consumption.
Preferably, said light-mixing structure comprises: at least two are positioned at holding part said incident side, that be used for independently holding the LED luminescence unit.
Further preferably, the surface of said holding part is an arcwall face.
Further preferably, said light-mixing structure also comprises: be used to make the micro-scattering structure of the light generation scattering of passing through, said micro-scattering structure is located on the surface of surface and/or holding part of said bright dipping side.
Preferably, said light-mixing structure comprises: be used to make the micro-scattering structure of the light generation scattering of passing through, said micro-scattering structure is located on the surface of surface and/or bright dipping side of said incident side.
Further preferably, said micro-scattering structure comprises waveform groove and/or pit.
Preferably, the material of processing of said mixed light bar is optical-grade polymethylmethacrylacontinuous or polycarbonate pc.
The utility model technical problem to be solved comprises, is prone to the problem that hot spot is bad, versatility is poor, cost is high to the LGP in LED-backlit source in the prior art, and a kind of line source assembly is provided.
The technical scheme that solution the utility model technical problem is adopted is a kind of line source assembly, and it comprises:
Light source;
Above-mentioned mixed light bar, said light source is positioned at outside the incident side of said mixed light bar.
Owing to have above-mentioned mixed light bar in the line source assembly of the utility model, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP, improves the LGP versatility, reduces cost and material consumption; And because this line source assembly can be converted into real line source with a plurality of LED luminescence units, so it can allow the technology of CCFL (cold cathode fluorescent tube) backlight to be common in the LED-backlit source.
Obviously, though the light source in the above-mentioned line source assembly is preferably LED lamp bar, using CCFL etc. also is feasible as its light source etc.
The utility model technical problem to be solved comprises, is prone to the problem that hot spot is bad, versatility is poor, cost is high to the LGP in LED-backlit source in the prior art, and a kind of backlight is provided.
The technical scheme that solution the utility model technical problem is adopted is a kind of backlight, and it comprises:
LGP;
Above-mentioned line source assembly, said line source assembly is positioned at outside the incidence surface of said LGP, the bright dipping side of the mixed light bar of said line source assembly towards with the incidence surface of said LGP.
Owing to have above-mentioned mixed light bar in the backlight of the utility model, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP etc., improves the versatility of LGP, reduces cost and material consumption.
Obviously, though above-mentioned backlight is preferably the form in side incident type LED-backlit source, (this moment, the LGP lower surface was an incidence surface) waited other form if it adopts straight-down negative, also is feasible.
The utility model technical problem to be solved comprises, is prone to the problem that hot spot is bad, versatility is poor, cost is high to the LGP in LED-backlit source in the prior art, and a kind of liquid crystal indicator is provided, and it comprises:
Above-mentioned backlight.
Owing to have above-mentioned mixed light bar in the liquid crystal indicator of the utility model, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP etc., improves the versatility of LGP, reduces cost and material consumption.
Obviously, though the preferred side incident type LED-backlit source of adopting in the above-mentioned liquid crystal indicator, if the backlight of other forms such as its use direct-light-type backlight also is feasible.
The utility model can be used in the liquid crystal indicator, in the liquid crystal indicator with side incident type LED-backlit source.
Description of drawings
Fig. 1 is that existing LED-backlit source is at the partial structurtes sketch map near LED lamp bar place;
Fig. 2 is that the LED-backlit source of embodiment of the utility model is at the partial structurtes sketch map near LED lamp bar place;
Fig. 3 is that another LED-backlit source of the utility model embodiment is at the partial structurtes sketch map near LED lamp bar place;
Fig. 4 is that another LED-backlit source of the utility model embodiment is at the partial structurtes sketch map near LED lamp bar place.
Reference numeral is: 1, LGP; 11, the micro-scattering structure on the LGP; 2, LED lamp bar; 21, wiring board; 22, LED luminescence unit; 3, mixed light bar; 31, micro-scattering structure; 32, holding part.
The specific embodiment
For making those skilled in the art understand the technical scheme of the utility model better, the utility model is described in further detail below in conjunction with the accompanying drawing and the specific embodiment.
Embodiment 1:
Present embodiment provides a kind of mixed light bar, comprising:
Incident side;
The bright dipping side relative with incident side;
Be used to make the light-mixing structure of the light uniformization of injecting and penetrating from the bright dipping side from incident side.
The mixed light bar of present embodiment has light-mixing structure, can make the light uniformization of injecting LGP so it is located between LGP and the LED lamp bar.Because the mixed light bar is individual components, so it can be used for the LGP that large-size light-conducting plate, printing LGP etc. can not injection mo(u)ldings, eliminates the bad or light inlet shadow of hot spot of these LGPs; And when measure-alike LGP cooperated with different LED lamp bars, as long as use different mixed light bars, LGP can be identical, thereby improved the versatility of LGP; In addition, when light-mixing structure goes wrong, as long as change the mixed light bar, and needn't change LGP, thereby reduce cost and material consumption.
Embodiment 2:
Like Fig. 2, shown in Figure 3, present embodiment provides a kind of mixed light bar 3, and it is located between LGP 1 incidence surface and the LED lamp bar 2, so that inject the light uniformization of LGP 1.This mixed light bar 3 is the strip that matees with LED lamp bar 2 length; Comprise relative incident side (near a side of LED lamp bar 2) and bright dipping side (near a side of LGP 1), and the light-mixing structure that is used to make the light uniformization of injecting and penetrating from the bright dipping side from incident side.
Concrete, light-mixing structure can comprise a plurality of holding parts 32 that are positioned at LED luminescence unit 22 incident side, that be used for independently holding LED lamp bar 2.Wherein, " independently holding LED luminescence unit 22 " is meant that 32 of each holding parts hold a LED luminescence unit 22, and promptly holding part 32 is corresponding one by one with LED luminescence unit 22; And preferably with respect to the surface depression of incident side, promptly holding part 32 can be groove or the pit on the mixed light bar 3 to holding part 32.Therefore when mixed light bar 3 and LED lamp bar 2 are combined; The incident side surface can contact (so distinguishing various parts in the two certain clearance of having drawn for clear among the figure) with the surface of the wiring board 21 of LED lamp bar 2, and LED luminescence unit 22 then is positioned at holding part 32.
If there is not holding part 32, then the light that sends of LED luminescence unit 22 when arriving mixed light bar 3 incident side, just big more from the incidence angle of LED luminescence unit 22 light more at a distance; Therefore the light apart from LED luminescence unit 22 position (the for example position between the two mixed light bars 3) far away possibly take place because of incidence angle is excessive to launch entirely, can't inject mixed light bar 3; And the original light intensity in these positions is just more weak, and total reflection must make the uneven problem of light intensity more serious.Through holding part 32 is set, can reduce to be mapped to the incidence angle of the light of these positions, more light is injected from the more weak position of script light intensity, improve light intensity uniformity.Simultaneously, holding part 32 also can play fixed L ED lamp bar 2 and protect the effect of LED luminescence unit 22, makes LED lamp bar 2 and mixed light bar 3 better form the line source assembly.
Preferably, the surface of holding part 32 (being the interface of holding part 32 and mixed light bar 3 bodies) is illustrated in figure 2 as arcwall face (being the shiny surface of non-straight), therefore should not have sharp-pointed corner angle on the surface, and light is injected in the mixed light bar 3 more uniformly.Certainly, if as shown in Figure 3, it also is feasible that the surface of holding part 32 is made up of several planes.
Preferably; Light-mixing structure also comprises the micro-scattering structure 31 that is used to make the light generation scattering of passing through; Micro-scattering structure 31 is located on the surface of surface and/or holding part 32 of bright dipping side; Just be positioned on the surface of light through (inject or penetrate), make light generation scattering and improve the light intensity uniformity purpose to reach.Certainly, micro-scattering structure 31 can be as shown in Figure 3, is positioned at simultaneously on the surface of surface and holding part 32 of bright dipping side, also can as shown in Figure 2 be arranged in one of them surface and goes up (figure only is positioned on the surface of bright dipping side); And micro-scattering structure 31 can be covered with certain surface, also can be as shown in Figure 3, only be distributed in (being only to be distributed in holding part 32 on the part surface of bright dipping side among the figure) on certain surperficial part.The concrete distributing position of this micro-scattering structure 31 can be confirmed according to real needs.
Preferably, micro-scattering structure 31 can be the form of waveform groove and/or pit, and the face that promptly is provided with micro-scattering structure 31 is wavy surface (serrated face) or matsurface.Waveform groove, pit can make the light generation scattering of passing through, thereby improve the uniformity of light through mixed light bar 3.Certainly, as previously mentioned, relatively LED luminescence unit 22 be in the micro-scattering structure 31 at diverse location place can different (for example the degree of depth of waveform groove, pit, distribution density etc. can be different), to reach different dispersion effects; The concrete form of micro-scattering such as waveform groove, pit structure can be confirmed according to real needs, be not described in detail at this.
Certainly, if there is not above-mentioned micro-scattering structure 31 in the mixed light bar 3, and having only holding part 32, also is feasible.
Preferably, mixed light bar 3 can be processed by optical-grade polymethylmethacrylacontinuous (PMMA) or polycarbonate pc (PC), and is very little to guarantee its light loss.
The mixed light bar 3 of present embodiment is equivalent to the light-mixing structure on the former LGP 1 " moved " and has arrived on the separate part, so as long as cooperate mixed light bar 3, the hot spot of any LGP 1 is bad all can be solved; And when the LGP 1 of same size was used with different LED lamp bars 2, as long as change mixed light bar 3, the form of LGP 1 then can be unified; And if light-mixing structure goes wrong,, and needn't change LGP 1 as long as change mixed light bar 3.
Embodiment 3:
Present embodiment provides a kind of mixed light bar 3, and is as shown in Figure 4, and it has the mixed light bar 3 similar structures with embodiment 2.
The difference of present embodiment and embodiment 2 is; There is not holding part 32 in the mixed light bar 3 of present embodiment; Its light-mixing structure includes only the surface that is located at incident side and/or the lip-deep micro-scattering structure 31 of bright dipping side, and this micro-scattering structure 31 is preferably the form of waveform groove and/or pit.
Though all surfaces with incident side and bright dipping side among Fig. 4 all is distributed with micro-scattering structure 31 as an example; But it also is feasible only having micro-scattering structure 31 in incident side surface or bright dipping side surface; And micro-scattering structure 31 also can only be positioned on the part surface of incident side or bright dipping side, and its distribution can be confirmed according to real needs.
Embodiment 4:
Present embodiment provides a kind of line source assembly, and it comprises:
Light source;
Mixed light bar among above-mentioned arbitrary embodiment, light source is positioned at outside the incident side of mixed light bar.
Preferably, the light source in the line source assembly of present embodiment is the LED luminescence unit, and the emission side of LED luminescence unit is towards the incident side of mixed light bar, and certainly, the LED luminescence unit can have a plurality of, and preferably is connected on the LED lamp bar.
Owing to have above-mentioned mixed light bar in the line source assembly of present embodiment, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP, improves the LGP versatility, reduces cost and material consumption; And because this line source assembly can be converted into real line source with a plurality of LED luminescence units, so it can allow the technology of CCFL (cold cathode fluorescent tube) backlight to be common in the LED-backlit source.
Obviously, though the light source in the above-mentioned line source assembly is preferably the LED luminescence unit, using CCFL etc. also is feasible as its light source etc.
Embodiment 5:
Present embodiment provides a kind of backlight, and to shown in Figure 4, it comprises like Fig. 2:
LGP 1;
Above-mentioned line source assembly, line source assembly are positioned at outside the incidence surface of LGP 1, the bright dipping side of the mixed light bar 3 of line source assembly towards with the incidence surface of LGP.
Preferably, the present embodiment backlight is side incident type LED-backlit source.
Certainly, the conventional components that also comprises backlights such as various optical films, backboard in the backlight of present embodiment.
Owing to have above-mentioned mixed light bar in the backlight of present embodiment, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP etc., improves the versatility of LGP, reduces cost and material consumption.
Obviously, though above-mentioned backlight is preferably the form in side incident type LED-backlit source, (this moment, the LGP lower surface was an incidence surface) waited other form if it adopts straight-down negative, also is feasible.
Embodiment 6:
Present embodiment provides a kind of liquid crystal indicator, and it comprises:
Above-mentioned backlight.
Preferably, the backlight in the liquid crystal indicator of present embodiment is side incident type LED-backlit source.
Certainly, the conventional components that also comprises liquid crystal indicators such as power supply, liquid crystal display module in the liquid crystal indicator of present embodiment.
Owing to have above-mentioned mixed light bar in the liquid crystal indicator of present embodiment, so it can eliminate the bad or light inlet shadow of hot spot of large-size light-conducting plate, printing LGP etc., improves the versatility of LGP, reduces cost and material consumption.
Obviously, though the preferred side incident type LED-backlit source of adopting in the above-mentioned liquid crystal indicator, if the backlight of other forms such as its use direct-light-type backlight also is feasible.
It is understandable that above embodiment only is the illustrative embodiments that adopts for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection domain of the utility model.
Claims (10)
1. a mixed light bar is characterized in that, comprising:
Incident side;
The bright dipping side relative with said incident side;
Be used to make the light-mixing structure of the light uniformization of injecting and penetrating from the bright dipping side from said incident side.
2. mixed light bar according to claim 1 is characterized in that, said light-mixing structure comprises:
At least two are positioned at holding part said incident side, that be used for independently holding the LED luminescence unit.
3. mixed light bar according to claim 2 is characterized in that,
The surface of said holding part is an arcwall face.
4. mixed light bar according to claim 2 is characterized in that, said light-mixing structure also comprises:
Be used to make the micro-scattering structure of the light generation scattering of passing through, said micro-scattering structure is located on the surface of surface and/or holding part of said bright dipping side.
5. mixed light bar according to claim 1 is characterized in that, said light-mixing structure comprises:
Be used to make the micro-scattering structure of the light generation scattering of passing through, said micro-scattering structure is located on the surface of surface and/or bright dipping side of said incident side.
6. according to claim 4 or 5 described mixed light bars, it is characterized in that,
Said micro-scattering structure comprises waveform groove and/or pit.
7. according to any described mixed light bar in the claim 1 to 5, it is characterized in that,
The material of processing of said mixed light bar is optical-grade polymethylmethacrylacontinuous or polycarbonate pc.
8. a line source assembly is characterized in that, comprising:
Light source;
Any described mixed light bar in the claim 1 to 7, said light source is positioned at outside the incident side of said mixed light bar.
9. a backlight is characterized in that, comprising:
LGP;
The described line source assembly of claim 8, said line source assembly is positioned at outside the incidence surface of said LGP, the bright dipping side of the mixed light bar of said line source assembly towards with the incidence surface of said LGP.
10. a liquid crystal indicator is characterized in that, comprising:
The described backlight of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200888688U CN202546445U (en) | 2012-03-09 | 2012-03-09 | Light mixing strip, line light source assembly, backlight source and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200888688U CN202546445U (en) | 2012-03-09 | 2012-03-09 | Light mixing strip, line light source assembly, backlight source and liquid crystal display device |
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| CN202546445U true CN202546445U (en) | 2012-11-21 |
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| CN2012200888688U Expired - Lifetime CN202546445U (en) | 2012-03-09 | 2012-03-09 | Light mixing strip, line light source assembly, backlight source and liquid crystal display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343925A (en) * | 2013-07-19 | 2013-10-09 | 深圳市华星光电技术有限公司 | Display device and manufacturing method thereof |
| CN103899973A (en) * | 2012-12-24 | 2014-07-02 | 联想(北京)有限公司 | Backlight module, electronic device and light source converting method |
| CN105334664A (en) * | 2015-11-25 | 2016-02-17 | 合一智能科技（深圳）有限公司 | Side fed backlight module |
| CN105676338A (en) * | 2014-12-04 | 2016-06-15 | 三星电子株式会社 | Display apparatus |
| CN106896584A (en) * | 2017-05-05 | 2017-06-27 | 武汉华星光电技术有限公司 | LED light bar and backlight assembly |
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2012
- 2012-03-09 CN CN2012200888688U patent/CN202546445U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899973A (en) * | 2012-12-24 | 2014-07-02 | 联想(北京)有限公司 | Backlight module, electronic device and light source converting method |
| CN103343925A (en) * | 2013-07-19 | 2013-10-09 | 深圳市华星光电技术有限公司 | Display device and manufacturing method thereof |
| WO2015007082A1 (en) * | 2013-07-19 | 2015-01-22 | 深圳市华星光电技术有限公司 | Display device and manufacturing method thereof |
| CN103343925B (en) * | 2013-07-19 | 2015-08-26 | 深圳市华星光电技术有限公司 | Display device and manufacture method thereof |
| CN105676338A (en) * | 2014-12-04 | 2016-06-15 | 三星电子株式会社 | Display apparatus |
| CN105334664A (en) * | 2015-11-25 | 2016-02-17 | 合一智能科技（深圳）有限公司 | Side fed backlight module |
| CN106896584A (en) * | 2017-05-05 | 2017-06-27 | 武汉华星光电技术有限公司 | LED light bar and backlight assembly |
| WO2018201538A1 (en) * | 2017-05-05 | 2018-11-08 | 武汉华星光电技术有限公司 | Led light strip and backlight assembly |
| US10317604B2 (en) * | 2017-05-05 | 2019-06-11 | Wuhan China Star Optoelectronics Technology Co., Ltd | LED lightbar and backlight unit |
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