CN203444132U - Light guide plate and backlight LED module comprising same - Google Patents
Light guide plate and backlight LED module comprising same Download PDFInfo
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- CN203444132U CN203444132U CN201320592497.1U CN201320592497U CN203444132U CN 203444132 U CN203444132 U CN 203444132U CN 201320592497 U CN201320592497 U CN 201320592497U CN 203444132 U CN203444132 U CN 203444132U
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Abstract
The utility model discloses a light guide plate and a backlight LED module comprising the same. The light guide plate comprises a light guide plate base material, and the light guide plate base material is equipped with an incoming light surface, an outgoing light surface and a bottom surface. The outgoing light surface and the bottom surface are opposite, and the outgoing light surface or the bottom surface is equipped with an ink film layer in which the light guide particles are distributed according to a predetermined rule. By printing the ink film layer comprising the light guide particles on the outgoing light surface, the density of the light guide particles in the ink film is distributed according to a rule of being increased gradually from getting close to a light source to being far away from the light source, so that an auxiliary diffusion plate or a diffusion barrier is saved, the light loss is reduced by about 10%, and the cost of a product is reduced. Moreover, a line source is transformed into an area source directly, so that the uniform outgoing light brightness that can not be obtained in the prior art can be obtained, and the light guide plate of a large size and the complicated optical design demands can be satisfied.
Description
Technical field
The utility model relates to illumination or display device, relates in particular to a kind of illumination or shows by light guide plate and comprise the backlight LED module of this light guide plate.
Background technology
Light guide plate is widely used in various demonstration series products, as televisor, display, various digital terminals etc.Along with the development of LED lighting engineering, in panel light and Ultrathin advertisement lamp house, also widely apply light guide plate.The producing principle of light guide plate is by destroying the total reflection of light in highdensity light guide base material, light is directed to and need to goes out direction of light, the line source of side incident being converted to planar light source.Process principle, the manufacturing technology of light guide plate is mainly divided into two large classes:
The first kind: process for treating surface, its leaded light mentality of designing is as follows:
First the line source of side light inlet is converted to the pointolite of plane or the line source of plane, more auxiliary diffusion barrier or diffuser plate covering, the area source that is haze shape light effect being evenly distributed formed.Structural representation when the type light guide plate is applied in display as shown in Figure 1, comprise light guide plate 101, be located at the printing net-point 102 of light guide plate 101 bottom surfaces, the exiting surface interval condensing film 104 that suitably distance arranges with described light guide plate 101, and be located at the diffusion barrier 103 of appropriate position between described light guide plate 101 and condensing film 104, and be located at the suitably line source 105 of distance of described light guide plate bottom; Structural representation while applying in LED panel light as shown in Figure 2, comprise light guide plate 101, be located at the printing net-point 102 of light guide plate 101 bottom surfaces, with the exiting surface interval diffusion barrier 103 that suitably distance arranges of described light guide plate 101, and be located at the suitably line source 105 of distance of described light guide plate bottom.
Main technique form comprises: screen print lattice-point, laser dotting, running roller pressure point, chemical etching site, laser scoring, injection mo(u)lding etc.
Major product feature: light guide plate substrate surface the distribute point-like of various shapes or linear structure design, the density that point-like or linear structure are rule changes.
Leaded light principle: by optical design is carried out in light guide plate substrate surface site or line, set up gradually in the region near incident light source point-like or the linear structure that shape is less, and it is thinner to distribute.In the region away from incident light source, set up gradually point-like or the linear structure that shape is larger, and it is closeer to distribute.By this point-like or linear structure, destroy light total reflection in light guide plate base material, light is directed to target area.
The shortcoming of this technology: pointolite or line source that such light guide plate forms need be assisted diffusion barrier or diffuser plate, in order to hide site or the line of light guide plate substrate surface, diffuse to form the light effect of haze shape by secondary simultaneously.Because needing auxiliary diffuser plate or diffusion barrier, thereby increased the cost of product.What is more important, because auxiliary diffusion barrier or diffuser plate can cause light loss, light loss will reach 10% left and right, reduce light extraction efficiency and bright intensity.Moreover because of the process limitation of the technology such as screen print lattice-point, laser dotting, production capacity is limited, cost of labor is high.Injection molding technology efficiency is higher, but can only do undersized light guide plate, and main in the demonstration backlight of various digital terminals, large scale almost cannot be produced, so usable range is limited.
In large-size light-conducting plate application at present, the most ripe technique is screen print lattice-point, account for the more than 95% of light guide plate total amount, but in long-term practice, silk-screen light guide plate technology stability is poor, easily occur because half tone stops up the leak source phenomenon causing, because sheet material flatness changes, cause print thickness uneven, affect uniformity coefficient, product stability is poor on the whole, and various index tolerances are excessive.
Equations of The Second Kind: add leaded light particle technology in light guide plate base material, its leaded light mentality of designing is as follows:
Main technique form: by evenly add leaded light particle in optics basic material, with the pattern of extrusion board or cast molding, directly generate light guide plate.
Major product feature: the leaded light particle that is distributing uniformly a large amount of in light guide plate base material.
Leaded light principle: the leaded light particle in light guide plate base material, by destroying the movement locus of total reflection light in sheet material, is guided out light guide plate by light.
The existing shortcoming of this technology: because the leaded light particle adding in light guide plate is just uniformly distributed, can not carry out rational optical design, cause light extraction efficiency too low, brightness is not high.Especially in the situation that making some large-size light-conducting plate, uniformity coefficient and brightness is very low all, almost cannot reach light guide effect.Such light guide plate is only applied in to the not high product of brightness requirement in minority at present.
Summary of the invention
According to the characteristic analysis of above-mentioned light guide plate, inventor of the present utility model thinks: one, leaded light mode, the area source that directly line source of side incident is converted to haze shape light effect is WeiLai Technology trend, reaches leaded light and spread two functions to unite two into one.Two, more scientific optical design means are to make efficient light guide plate essential condition.The object of optical design is to make light be guided out target area along the shortest distance, thereby it is higher and be more evenly distributed to reach light extraction efficiency.
Above 2 is all the key element that represents following light guide plate technical progress development.The utility model is created tightly around this 2 point, and the method for designing of exploitation of innovation, takes special process means, produces light guide plate.
The utility model is the defect that overcomes prior art, a kind of light guide plate is provided, comprise light guide plate base material, described light guide plate base material is provided with incidence surface, exiting surface and bottom surface, described exiting surface is relative with described bottom surface, and described exiting surface or bottom surface are provided with ink film layer, in described ink film layer, according to predetermined rule, be distributed with leaded light particle.
According to embodiment of the present utility model, also can adopt following preferred technical scheme:
The density of the described leaded light particle distributing according to predetermined rule in described ink film layer distributes according to the rule from extremely progressively increasing away from light source near light source.
The density of the described leaded light particle distributing according to predetermined rule in described ink film layer according near light source to first progressively increasing away from light source, to the opposite of the described incidence surface of distance suitably apart from time the rule that reduces again distribute.
Described incidence surface is the side of described light guide plate, has more than two; When incidence surface is relative two sides, the density of described leaded light particle in described ink film layer is Zi distributing to the rule progressively increasing away from described two incidence surfaces near described two incidence surfaces, simultaneously, described leaded light particle being distributed as in described ink film layer: the concentration at the position that two sides adjacent with two incidence surfaces are close is lower than the concentration at other position, so that the emitting brightness of whole light guide plate is even; When incidence surface is four that relatively establish between two, described leaded light particle being distributed as in described ink film layer: the concentration of middle part is high, and the suitable distance concentration in surrounding distance described light guide plate side progressively reduces, so that the emitting brightness of whole light guide plate is even.
The percent by volume of described leaded light particle in ink film is 0.5%～50%.
The particle diameter of described leaded light particle is 5nm～10000nm.
The particle diameter of described leaded light particle is≤300nm.
Described leaded light particle is made by organosilicon material.
Described ink film layer adopts UV gloss oil or PU ink.
The beneficial effects of the utility model are:
By be printed with the ink film that one deck includes leaded light particle at exiting surface, in described ink film, the density of leaded light particle distributes according to the rule from extremely progressively increasing away from light source near light source, not only save auxiliary diffuser plate or diffusion barrier, light loss has been reduced to 10% left and right, reduced the cost of product; And be that line source is directly converted to area source, thereby can obtain the not obtainable uniform emitting brightness of prior art, and can meet large-size light-conducting plate and complicated optical design demand.
The density of the described leaded light particle distributing according to predetermined rule in described ink film layer distributes according to the rule from extremely progressively increasing away from light source near light source, by leaded light distribution of particles such mode in ink film layer, the realization of the more convenient various regularity of distribution and complicated situation of change, therefore can realize complicated optical design, to guarantee out light effect.
The density of the described leaded light particle distributing according to predetermined rule in described ink film is according to distributing from extremely first progressively increasing away from light source the rule reducing again near light source, this design can be eliminated light guide plate in actual applications because the face relative with incidence surface is provided with the undesirable situation of bright dipping that reflectorized material etc. may cause (away from a side emitting brightness of incidence surface higher than other position), further optimizes the final light effect that goes out.
The utility model further provides a kind of backlight LED module, it comprises reflector, light guide plate and the condensing film setting gradually from bottom to top, and the line source of the incidence surface of corresponding described light guide plate setting, described light guide plate is to be light guide plate as described in front any one.This backlight LED module is for showing or during lighting device, can realize the uniform emitting brightness in large scale and complicated optical design situation.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of the light guide plate of a prior art while applying in light-emitting diode display.
Fig. 2 is the partial structurtes schematic diagram of the light guide plate of a prior art while applying in LED panel light.
Fig. 3 is the structural representation of the light guide plate of an embodiment of the utility model while applying in light-emitting diode display.
Fig. 4 is the structural representation of the light guide plate of an embodiment of the utility model while applying in LED panel light.
Fig. 5 is the ink film layer schematic diagram of single incidence surface light guide plate of an embodiment of the utility model.
Fig. 6 is the local enlarged diagram in the cross section of Fig. 5.
Fig. 7 is the structural representation that the light guide plate of an embodiment is applied in a display device.
Fig. 8 is the leaded light principle schematic of the light guide plate of Fig. 7.
Fig. 9 is two incidence surface light guide plate schematic diagram of an embodiment of the utility model.
Figure 10 is the four incidence surface light guide plate schematic diagram of an embodiment of the utility model.
Embodiment
Preferred embodiment the utility model is described in further detail to contrast accompanying drawing combination below.
Embodiment 1
The light guide plate of the present embodiment comprises light guide plate base material, described light guide plate base material is provided with incidence surface, exiting surface and bottom surface, described exiting surface is relative with described bottom surface, and described exiting surface is printed with the ink film layer that one deck includes leaded light particle, in described ink film layer, the density of leaded light particle distributes according to the rule from extremely progressively increasing away from light source near light source, to obtain the uniform emitting brightness of exiting surface.
As shown in Figure 3 and Figure 4, it is respectively the light guide plate of the present embodiment structural representation while applying in light-emitting diode display and LED panel light, compare with the prior art of Fig. 1 and Fig. 2, structurally simplified a lot, for example, without the diffusion layer arranging with light guide plate base material adjacent, but aspect effect, promote a lot, as the brightness of emergent light and uniformity coefficient are improved.It should be noted that, here saidly without the diffusion layer 103 adjacent with light guide plate base material 201 is set, refer to that the two haze shape light that can meet or exceed prior art is not set light effect, but the diffusion layer 103 adjacent with light guide plate base material 201 not can not be set.And the light guide plate of the present embodiment, after using diffusion layer 204, also can further promote outgoing light homogeneity on the basis of the utility model technique effect.
It can be the light guide plate materials such as PMMA material that single incidence surface light guide plate of the present embodiment comprises light guide plate base material 201(), the incidence surface 503 on the left of being provided with, exiting surface 504 above and bottom surface below.Exiting surface 504 is printed with the ink film layer 202 that one deck includes leaded light particle 3, and the particle diameter of described leaded light particle 3 is≤300nm.The Density Distribution of described leaded light particle 3 is: by near being rule compared with low-density to the higher density away from light source and distributing of light source, specific to the present embodiment, described is equivalent gradual change from distributing to the rule progressively increasing away from light source near light source.Obviously, the Density Distribution of described leaded light particle 3 can not be also equivalent gradual change, but more complicated according to actual conditions designs, for example: in actual applications, tend to be provided with on the opposite of incidence surface the direction that the reflectorized materials such as reflective sheeting change light, so, be subject to the reflective impact of reflectorized material, the set-up mode of equivalent gradual change can make display device surpass on the contrary other position in the emitting brightness of a section on the opposite near incidence surface, cause inhomogeneous, now, can pass through the regularity of distribution of density equivalent gradual change from low to high, while arriving certain position, for example during the side suitable distance of the non-incidence surface of distance, according to density, by height, to the mode of low equivalent gradual change or other Changing Pattern, adjusted again, to reach best outgoing light homogeneity.
As shown in Figure 5, it is the schematic diagram of the ink film layer 202 of an embodiment of the utility model, as shown in Figure 6, the cross section partial enlarged drawing of this light guide plate while applying in display, described ink film layer 202 is located on the exiting surface of described light guide plate, the rule that leaded light particle 3 wherein increases successively according to right-to-left (line source is arranged on the left side of light guide plate) concentration distributes, when application, in the light of injecting from line source a part after ink film layer 202 directly by exiting surface bright dipping, another part through several times total reflection campaign by 202 bright dipping of ink film layer.The particle diameter of described leaded light particle 3 can be selected within the scope of 5nm～10000nm, and better is≤300nm.
As shown in Figure 7, it is the structural representation that the ink film layer 202 of the present embodiment is applied in a display device, wherein, incidence surface is the bottom sides of light guide plate, suitable distance that should incidence surface is provided with to line source 401, top-side (relative with incidence surface) in light guide plate is provided with reflectorized material 206, therefore the CONCENTRATION DISTRIBUTION rule of leaded light particle 3 is in described ink film layer 202: concentration is aobvious from bottom to top reduces again after increasing gradually gradually (in Fig. 7 the trizonal color depth change modeling of P1-P2-P3 this effect), thereby can guarantee that this display device can whole evenly bright dipping.
As shown in Figure 8, the leaded light principle of the utility model light guide plate is: when the light of doing total reflection movement locus in light guide plate base material 201 touches the leaded light particle of ink film layer 202, there is refraction or reflection, thereby make light directly from light guide plate exiting surface, be guided out light guide plate base material 201, or from the bottom of light guide plate, penetrate, be reflected layer 205 and be reflected back exiting surface.When through ink film layer 202, there is repeatedly refraction or reflection in the light being penetrated by exiting surface, ink film layer 202 plays the effect of diffusion simultaneously, realizes leaded light and diffusion unites two into one, thereby form uniform haze light effect.
In the present embodiment, being formulated as follows of printing-ink:
Ink adopt light transmission good, to the UV gloss oil of light guide plate base material 201 strong adhesions (also can adopt PU ink), described leaded light particle 3 adopts and can make by organosilicon material good and that diluting solvent mixes, simultaneously, for fear of the rubber roll to subsequent technique, produce corrosive attack, the present embodiment adopts the not diluting solvent of containing benezene, and adopt esters solvent or alcohols solvent etc., as ethyl acetate, absolute ethyl alcohol, isopropyl alcohol etc.Leaded light particle 3 elder generations and diluting solvent are fully stirred, and add certain proportion spreading agent, leaded light particle 3 is disperseed completely, then potpourri and ink are carried out to mix and blend until completely even.Wherein the percentage by weight of leaded light particle 3 is 0.5%～50%.After mixing, in transfer printing mode, be printed on the exiting surface of described light guide plate base material 201 and form ink film layer 202.
Be pointed out that, the light guide plate of the present embodiment also can be provided with plural described incidence surface, be connected between described exiting surface and described bottom surface, for example be arranged to the structure of two incidence surfaces or four incidence surfaces, respectively as shown in Figure 9 and Figure 10, there are respectively two incidence surfaces 402 and four incidence surfaces 404.When incidence surface 402 is relative two sides, the density of described leaded light particle 3 in described ink film layer 202 is Zi distributing to the rule progressively increasing away from described two incidence surfaces 402 near described two incidence surfaces 402, simultaneously, described leaded light particle 3 being distributed as in described ink film layer 202: the concentration at the position that two sides adjacent with two incidence surfaces 402 are close is lower than the concentration at other position, so that the emitting brightness of whole light guide plate is even.When incidence surface 404 is four that relatively establish between two, described leaded light particle 3 being distributed as in described ink film layer 202: the concentration of middle part is high, and the suitable distance concentration in surrounding distance described light guide plate side progressively reduces, so that the emitting brightness of whole light guide plate is even.
In addition, the density of the leaded light particle 3 in described light guide plate can not be the regularity of distribution of equivalent gradual change, but do more complicated, reasonably distribution according to actual optical design demand, during for example two incidence surface, the density of being a bit larger tham light guide plate central part near the density of the middle part leaded light particle 3 of two sides adjacent with two incidence surfaces 402 in light guide plate, with high light-emitting efficiency and the high brightness that guarantees that this position is consistent with other position.In addition, can also change according to predetermined distribution curve flux, for example according to the Changing Pattern of parabolical a certain section, change.For example, described distribution curve flux formula can be: y=aX
2+ bX+c, wherein, 0≤y≤255; 0≤x≤100; And while meeting x=100, y=0, the x value in this function is for setting up conversion standard value, and actual leaded light converts apart from carry out equivalent according to this standard value, such as actual leaded light distance is 200mm, the y value of the position of 100mm correspondence x=50 in actual grey figure; A, b are distribution curve flux constant, 0 < a; B≤-200a; C is initial gray scale, meets 0≤y≤255.In addition, also can adopt other conventional distribution curve flux of this area, can realize goal of the invention of the present invention equally
Light guide plate of the present utility model possesses following obvious characteristic:
1) the utility model is created the light guide plate of producing and the line source of side incident directly can be converted to the area source of haze shape light effect, and diffusion and leaded light are united two into one.
2) in light guide plate optical design, the gray scale principle of having quoted graphics software of innovation, builds optical design curvilinear function theoretical, adopts the incremental method for designing of substep, makes optical design mode more scientific, easier, guarantees optical design quality.
3) compare silk-screen light guide plate, the utility model light guide plate, due to without auxiliary diffusion barrier or diffuser plate, therefore can not cause light loss, and the actual brightness effect being assembled in product exceeds 10% left and right than silk-screen light guide plate.
4) mode of having used intaglio printing technology and transfer-print technology to combine of innovation is made light guide plate.Around this brand-new technology pattern, a series of details technology such as ink formulation, forme making, device structure, materials'use, evaluation method that comprise have been developed.
5), according to the unique function of this light guide plate, built from Theoretical Design, to manufacturing practice, to the complete skill system of product application.
The utility model is created also possesses following notable feature in realizing industrial manufacture process:
6) greatly reduce product application cost (saving diffusion barrier or diffuser plate).
7) significantly improve production capacity.Take silk-screen as example, in same artificial situation, make the light guide plate of 600mm * 600mm, the production line standard production capacity of a day is 1200 left and right, and utilize the utility model can realize one day production capacity, reaches 9000, improves production capacity and reaches more than 7.5 times.
8) because the stability of running roller printing is far above silk-screen and laser technology mode, this will greatly improve the stability of product, and consistance, when can improve the quality of products, reduces fraction defective.
Take silk-screen equally as example, and the ink cost of the light guide plate of existing making 600mm * 600mm reaches 1 yuan of RMB/ sheet, and uses this technique can drop to 0.3 yuan of RMB/ sheet, significantly reduces costs.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, described ink film layer is arranged on the bottom surface of described light guide plate, and other all can adopt the structure identical with embodiment 1, at this, does not do too much repeating.Relative embodiment 1, in the light of injecting from line source in the present embodiment a less part after ink film layer directly by exiting surface bright dipping, more light through several times total reflection campaign by the bright dipping of ink film layer.
Embodiment 3
The backlight LED module of the present embodiment, comprise the reflector, light guide plate and the condensing film that set gradually from bottom to top, and the line source of the incidence surface of corresponding described light guide plate setting, wherein, described line source is one-sided line source, described light guide plate adopts light guide plate claimed in claim 1, certainly also can adopt the light guide plate described in embodiment 2, all can realize goal of the invention of the present invention.
It will be understood by those skilled in the art that the one-sided line source in the present embodiment also can bilateral line source or many side lines light source.
Embodiment 4
As shown in Figure 3, also embodiment 2 of the utility model embodiment 1() the application example in light-emitting diode display of light guide plate, the present embodiment is a kind of backlight LED display, comprise line source and light guide plate, described line source is one-sided line source, the left surface that incidence surface is light guide plate (also can be right flank).
The utility model light guide plate, due to the difference of its structure and function, has larger difference with traditional dot light guide plate (as silk-screen, laser light guide plate) in actual applications, is described as follows:
In the assembling of the display backlight source of prior art, while using screen print lattice-point light guide plate, light guide plate printing surface is positioned over bottom, is connected with reflective membrane, and top covers respectively diffusion barrier and condensing film; And while using this light guide plate, printing surface (ink film layer) is positioned at exiting surface, top is directly connected with condensing film, without diffusion barrier, therefore its structure as shown in Figure 3, relatively simplified the structure of light-emitting diode display, save material and cost, and for the further ultrathin of product provides may.
Because being pasted with reflectorized material in upper side relative with bottom side in this light-emitting diode display, thus wherein in light guide plate in set ink film layer the concentration of leaded light particle after first increasing gradually from bottom to top, reduce gradually again.
Embodiment 5
As shown in Figure 4, be also embodiment 2 of the utility model embodiment 1() the application example in LED panel light of light guide plate, the present embodiment is a kind of side-edge type backlight LED panel light, comprises line source and light guide plate, described line source is one-sided line source.With above-described embodiment 3, while using this light guide plate, printing surface (ink film layer) is positioned at exiting surface, and top is directly connected with condensing film, without diffuser plate above.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field; without departing from the concept of the premise utility; can also make some being equal to substitutes or obvious modification, and performance or purposes identical, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a light guide plate, comprise light guide plate base material, it is characterized in that: described light guide plate base material is provided with incidence surface, exiting surface and bottom surface, described exiting surface is relative with described bottom surface, and described exiting surface or bottom surface are provided with ink film layer, in described ink film layer, according to predetermined rule, be distributed with leaded light particle.
2. light guide plate as claimed in claim 1, is characterized in that: the density of the described leaded light particle distributing according to predetermined rule in described ink film layer distributes according to the rule from extremely progressively increasing away from light source near light source.
3. light guide plate as claimed in claim 1, it is characterized in that: the density of the described leaded light particle distributing according to predetermined rule in described ink film layer according near light source to first progressively increasing away from light source, to the opposite of the described incidence surface of distance suitably apart from time the rule that reduces again distribute.
4. light guide plate as claimed in claim 1, is characterized in that: the side that described incidence surface is described light guide plate, has more than two;
When incidence surface is relative two sides, the density of described leaded light particle in described ink film layer is Zi distributing to the rule progressively increasing away from described two incidence surfaces near described two incidence surfaces, simultaneously, described leaded light particle being distributed as in described ink film layer: the concentration at the position that two sides adjacent with two incidence surfaces are close is lower than the concentration at other position, so that the emitting brightness of whole light guide plate is even;
When incidence surface is four that relatively establish between two, described leaded light particle being distributed as in described ink film layer: the concentration of middle part is high, and the suitable distance concentration in surrounding distance described light guide plate side progressively reduces, so that the emitting brightness of whole light guide plate is even.
5. the light guide plate as described in claim 1-4 any one, is characterized in that: the percent by volume of described leaded light particle in ink film layer is 0.5%～50%.
6. light guide plate as claimed in claim 5, is characterized in that: the particle diameter of described leaded light particle is 5nm～10000nm.
7. light guide plate as claimed in claim 6, is characterized in that: the particle diameter of described leaded light particle is≤300nm.
8. light guide plate as claimed in claim 5, is characterized in that: described leaded light particle is made by organosilicon material.
9. light guide plate as claimed in claim 5, is characterized in that: described ink film layer adopts UV gloss oil or PU ink.
10. a backlight LED module, is characterized in that: comprise the reflector, light guide plate and the condensing film that set gradually from bottom to top, and the line source that arranges of the incidence surface of corresponding described light guide plate, described light guide plate is as described in claim 1-9 any one.
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| CN201320592497.1U CN203444132U (en) | 2013-09-24 | 2013-09-24 | Light guide plate and backlight LED module comprising same |
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| CN201320592497.1U CN203444132U (en) | 2013-09-24 | 2013-09-24 | Light guide plate and backlight LED module comprising same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459868A (en) * | 2013-09-24 | 2015-03-25 | 陈蕾 | Light guide plate, light guide plate manufacturing method, backlight LED module, display and panel lamp |
| CN109239837A (en) * | 2018-11-09 | 2019-01-18 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attachment process and light guide plate |
-
2013
- 2013-09-24 CN CN201320592497.1U patent/CN203444132U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459868A (en) * | 2013-09-24 | 2015-03-25 | 陈蕾 | Light guide plate, light guide plate manufacturing method, backlight LED module, display and panel lamp |
| CN109239837A (en) * | 2018-11-09 | 2019-01-18 | 深圳Tcl新技术有限公司 | Light guide plate side reflector plate attachment process and light guide plate |
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