CN202404275U - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
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- CN202404275U CN202404275U CN2012200137725U CN201220013772U CN202404275U CN 202404275 U CN202404275 U CN 202404275U CN 2012200137725 U CN2012200137725 U CN 2012200137725U CN 201220013772 U CN201220013772 U CN 201220013772U CN 202404275 U CN202404275 U CN 202404275U
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Abstract
The utility model relates to a light guide plate and a backlight module. A plurality of light beams are converted into an area light source by the light guide plate. The light guide plate comprises a body, a plurality of optical scattering patterns and a plurality of optical dispersion patters, wherein the body is provided with an incident surface, and an emergent surface opposite to the incident surface and having a first direction and a second direction staggered with the first direction; the plurality of optical scattering patterns are arranged on the incident surface, and each light beam respectively incomes to each optical scattering pattern; and the plurality of optical dispersion patterns are arranged on the emergent surface along the second direction and extend along the first direction. The light guide plate does not need an optical film (such as an optical dispersion slice) and still obtains the uniform area light source with sufficient brightness.
Description
Technical field
The utility model relates to a kind of backlight module, relates in particular to the LGP in this backlight module.
Background technology
(Light Emitting Diode, the backlight module that LED) cooperates LGP to throw light on is popularized gradually to adopt light emitting diode.Generally speaking, light emitting diode capable of using and LGP are configured to the lateral incident type backlight module; Perhaps, utilize light emitting diode and diffusion barrier sheet to be configured to direct type backlight module.
Specifically, in the lateral incident type backlight module, LGP has a front, a bottom surface and four sides.Be provided with a plurality of light emitting diodes and be arranged in a linear as the side of incidence surface is other along the side of LGP.Can keep the spacing of fixing between a plurality of light emitting diodes each other.The light course of lateral incident type backlight module is described below: the light that sends via light emitting diode can get in the LGP via the side of LGP and transmit.Then, the light bottom reflection that can be applied the reflection horizon is upwards advanced.At last, light can arrive as the front of exiting surface and outgoing, so that form area source from the light of pointolite outgoing.But the lateral incident type backlight module of prior art only utilizes LGP to carry out the mode of leaded light, is difficult to the area source that obtains evenly, atomizes.
In addition, in direct type backlight module, generally be to see through diffusion barrier sheet to be transformed into area source to the light that a plurality of light emitting diodes (pointolite) are sent.But, see through the mode that diffusion barrier sheet atomizes and spreads for light, with making the briliancy of area source reduce.
Hold and above-mentionedly know,, be difficult to take into account simultaneously required uniform properties of area source and briliancy requirement no matter be above-mentioned lateral incident type backlight module or direct type backlight module.
Summary of the invention
The utility model technical issues that need to address have provided a kind of LGP, are intended to solve the above problems.
The utility model also provides the backlight module that adopts above-mentioned LGP
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
The LGP of the utility model: described LGP makes many light change an area source into, and this LGP comprises: a body; Described body have an incidence surface, with subtend in an exiting surface of this incidence surface, and this body has a first direction interlaced with each other and a second direction; A plurality of optical scattering patterns; Described a plurality of optical scattering pattern setting is in this incidence surface, and each bar light is each those optical scattering pattern of incident respectively; And a plurality of optics are diffusion patterned; Diffusion patterned this exiting surface that is arranged at of described a plurality of optics, those optics are diffusion patterned to be extended along this first direction, and those optics are diffusion patterned arranges along this second direction.
The backlight module of the utility model comprises: a plurality of pointolites; An and LGP; Described LGP is arranged on a side of point light sources, and this LGP makes the light that sends from point light sources change an area source into; This LGP comprises: a body; Described body have an incidence surface, with subtend in an exiting surface of this incidence surface, and this body has a first direction interlaced with each other and a second direction; A plurality of optical scattering patterns; Described a plurality of optical scattering pattern setting is in this incidence surface, and each bar light is each those optical scattering pattern of incident respectively; And a plurality of optics are diffusion patterned; Diffusion patterned this exiting surface that is arranged at of described a plurality of optics, those optics are diffusion patterned to be extended along this first direction, and those optics are diffusion patterned arranges along this second direction.
Compared with prior art, the beneficial effect of the utility model is: LGP is suitable for using in the backlight module of straight-down negative; The light of launching from pointolite can change area source into through having after the diffusion patterned LGP of optical scattering pattern and optics; Use the LGP of the utility model can not need to utilize again blooming piece (optical diffusion sheet etc.), still can obtain evenly and area source with enough briliancy.
Description of drawings
Fig. 1 is a kind of schematic perspective view of LGP of an embodiment of the utility model.
Fig. 2 is the elevational schematic view of the LGP of Fig. 1, has illustrated the optical scattering pattern on the incidence surface.
Fig. 3 is the schematic top plan view of the LGP of Fig. 1, and it is diffusion patterned to have illustrated the optics on the exiting surface.
It is diffusion patterned during for the optics groove that Fig. 4 illustrates the optics of the utility model, other two kinds of shapes of optics groove.
It is diffusion patterned during for the optics thrust that Fig. 5 illustrates the optics of the utility model, three kinds of shapes of optics thrust.
Fig. 6 is the synoptic diagram of the LGP of another embodiment of the utility model.
Fig. 7 is the schematic perspective view of LGP of the another embodiment of the utility model, has illustrated the set-up mode of optical scattering pattern and pointolite.
Fig. 8 is the synoptic diagram of a kind of backlight module of the utility model embodiment.
Fig. 9 is the synoptic diagram of another backlight module of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
The utility model provides a kind of LGP, and the light that pointolite is sent forms evenly and the area source with enough briliancy.
The utility model provides a kind of backlight module, has above-mentioned LGP, can provide evenly and the area source with enough briliancy.
The utility model proposes a kind of LGP, makes many light change an area source into.LGP comprises: body, a plurality of optical scattering pattern and a plurality of optics are diffusion patterned.Body have incidence surface, with subtend in the exiting surface of incidence surface, and body has first direction interlaced with each other and second direction.The optical scattering pattern setting is in incidence surface, and each bar light is each optical scattering pattern of incident respectively.The diffusion patterned exiting surface that is arranged at of optics, optics is diffusion patterned to be extended along first direction, and these optics are diffusion patterned arranges along second direction.
The utility model also proposes a kind of backlight module, comprising: a plurality of pointolites and LGP.This LGP is arranged on a side of pointolite.LGP makes the light that sends from pointolite change area source into.LGP comprises: body, a plurality of optical scattering pattern and a plurality of optics are diffusion patterned.Body have incidence surface, with subtend in the exiting surface of incidence surface, and body has first direction interlaced with each other and second direction.The optical scattering pattern setting is in incidence surface, and each optical scattering pattern subtend is in the every bit light source.The diffusion patterned exiting surface that is arranged at of optics, optics is diffusion patterned to be extended along first direction, and these optics are diffusion patterned arranges along second direction.
In an embodiment of the utility model, above-mentioned optical scattering pattern setting is in this incidence surface of part.
In an embodiment of the utility model, the diffusion patterned optics groove that comprises of above-mentioned optics, these optics grooves are to be selected from V font groove, semi-circular grooves, R groove and combination thereof.
In an embodiment of the utility model, the diffusion patterned optics thrust that comprises of above-mentioned optics, these optics thrusts are to be selected from V font thrust, half-circle projection thing, R thrust and combination thereof.
In an embodiment of the utility model, above-mentioned body more comprises: four side surfaces are connected between incidence surface and the exiting surface.
In an embodiment of the utility model, above-mentioned LGP more comprises: an optical reflecting layer is arranged on four side surfaces.
In an embodiment of the utility model, above-mentioned light is respectively from a plurality of pointolite outgoing, and these pointolites comprise: light emitting diode.
In an embodiment of the utility model, above-mentioned pointolite and optical scattering pattern are that array is arranged, and pointolite and the setting opposite to one another of optical scattering pattern.
In an embodiment of the utility model, above-mentioned first direction is interlaced with each other with second direction and be perpendicular to one another.
In an embodiment of the utility model, above-mentioned backlight module more comprises: an optical reflection sheet, subtend is provided with in four side surfaces.
Based on above-mentioned, the LGP of the utility model is suitable for using in the backlight module of straight-down negative.The light of launching from pointolite can change area source into through having after the diffusion patterned LGP of optical scattering pattern and optics.Use the LGP of the utility model can not need to utilize again blooming piece (optical diffusion sheet etc.), still can obtain evenly and area source with enough briliancy.
[LGP]
Fig. 1 is a kind of schematic perspective view of LGP of an embodiment of the utility model.Fig. 2 is the elevational schematic view of the LGP of Fig. 1, has illustrated the optical scattering pattern on the incidence surface.Fig. 3 is the schematic top plan view of the LGP of Fig. 1, and it is diffusion patterned to have illustrated the optics on the exiting surface.
Please with reference to Fig. 1, LGP 100 can make many light L change area source P into.Many light L send from a plurality of pointolite S.LGP 100 comprises: body 110, a plurality of optical scattering pattern 120 and a plurality of optics diffusion patterned 130.Body 110 have incidence surface 110a, with subtend in the exiting surface 110b of incidence surface 110a, and body 110 has first direction DL interlaced with each other and second direction DS.Optical scattering pattern 120 is arranged at incidence surface 110a, and each bar light L is each optical scattering pattern 120 of incident respectively.For example, can find out that each optical scattering pattern 120 subtend is in every bit light source S.Optics diffusion patterned 130 is arranged at exiting surface 110b, and optics diffusion patterned 130 extends along first direction DL, and these optics diffusion patterned 130 are arranged along second direction DS.
As shown in Figure 1, body 110 illustrates and is rectangle, has: interlaced with each other and the first direction DL and the second direction DS that are perpendicular to one another.In fact, first direction DL can not be perpendicular to one another and only interlaced with each other getting final product with second direction DS yet, that is body 110 can be any geometric configuration (trapezoidal, pentagon or other shape that is fit to).On the body 110 of different geometric shape, have first direction DL interlaced with each other and second direction DS, and optics diffusion patterned 120 can be provided with according to first direction DL and second direction DS.
The material of LGP 100 can be the transparent material of optical grade, for example is selected from: acryl, polycarbonate, polystyrene, cycloolefin and combination thereof.In addition, optical scattering pattern 120 is set, makes the light L that launches from a plurality of pointolite S produce scattering, and then light L entering LGP 100 interior and past all directions are advanced at optical scattering pattern 120 by incidence surface 110a at LGP 100.And the light L that in LGP 100, advances can produce the optics diffusion again via the optics diffusion patterned 130 of the exiting surface 110b that is arranged on LGP 100.
Thus, the light L that is sent from a plurality of pointolite S can form uniform surface light source P.Only utilize above-mentioned single optical module, can reach effects such as leaded light, mixed light and optics diffusion, therefore, the use of using the backlight module of above-mentioned LGP 100 can omit the optical diffusion sheet of script, and can save cost.Below, further specify the various examples of the utility model LGP.
Please with reference to Fig. 1 and Fig. 2, optical scattering pattern 120 is arranged at local incidence surface 110a.Optical scattering pattern 120 can be uneven surface, for example, utilize sandblast, surface treatments such as hot pressing or surperficial scraped finish, and form optical scattering pattern 120 partly on the incidence surface 110a of LGP 100.In case the light L that pointolite S sends arrives optical scattering pattern 120, optical scattering pattern 120 can help light L to incide each zone of LGP 100 all directions scattering in the past LGP 100 of light L.
As shown in Figure 2, optical scattering pattern 120 (Random) at random is arranged on the incidence surface 110a.Each optical scattering pattern 120 is provided with corresponding pointolite S.This pointolite S can be a light emitting diode, or similar pointolite (as, organic electric exciting light-emitting diode etc.).
Please with reference to Fig. 1 and Fig. 3, optics diffusion patterned 130 can be the optics groove, and these optics grooves for example are to be selected from V font groove, semi-circular grooves, R groove and combination thereof.What in Fig. 1, illustrate is: optics diffusion patterned 130 is V font groove and is covered with on exiting surface 110b.Yet in other embodiments, the optics groove on exiting surface 110b also can be other shape, and can be the combination of the optics groove of multiple shape.
It is diffusion patterned during for the optics groove that Fig. 4 illustrates the optics of the utility model, other two kinds of shapes of optics groove.Please with reference to Fig. 4, optics diffusion patterned 130 also can be semi-circular grooves 130a or R groove 130b.Certainly, as the optics groove of optics diffusion patterned 130, also can be other shape that is fit to, be not limited to above-mentioned V font groove, semi-circular grooves or R groove.
It is diffusion patterned during for the optics thrust that Fig. 5 illustrates the optics of the utility model, three kinds of shapes of optics thrust.Please with reference to Fig. 5, optics diffusion patterned 130 also can be the optics thrust, and these optics thrusts for example are to be selected from V font thrust 130c, half-circle projection thing 130d, R thrust 130e.
Be similar to Fig. 1 and illustrate, optics diffusion patterned 130 also can be the optics thrust and is arranged on the exiting surface 110b of LGP 100.In other words; V font thrust 130c, half-circle projection thing 130d, R thrust 130e and combination thereof can be arranged on the exiting surface 110b; That is: can adopt is the thrust of single kind of shape all; Or use the combination of the thrust of multiple shape, so that the light L that in LGP 100, advances produces the optics diffusion and forms area source P in exiting surface 110b.Certainly, as the optics thrust of optics diffusion patterned 130, also can be other shape that is fit to, be not limited to above-mentioned V font thrust 130c, half-circle projection thing 130d, R thrust 130e.
Fig. 6 is the synoptic diagram of the LGP of another embodiment of the utility model.Please with reference to Fig. 6, LGP 102 is similar with the LGP 100 that Fig. 1 illustrates, and identical assembly indicates with identical symbol.Please with reference to Fig. 6, body 110 also can comprise: four side surface 110c are connected between incidence surface 110a and the exiting surface 110b.LGP 102 also can comprise optical reflecting layer 140, is arranged on four side surface 110c.Optical reflecting layer 140 can directly be coated on four side surface 110c.In other words, optical reflecting layer 140 can prevent that the light L that in LGP 100, transmits from penetrating via four side surface 110c, can promote the integral brightness of area source P.
Fig. 7 is the schematic perspective view of LGP of the another embodiment of the utility model, has illustrated the set-up mode of optical scattering pattern and pointolite.In order to clearly illustrate the corresponding relation of optical scattering pattern 120 and pointolite S, the incidence surface 110a of LGP 104 is illustrated in the top of Fig. 7.LGP 104 as shown in Figure 7 is similar with the LGP 100 that Fig. 1 illustrates, and identical assembly indicates with identical symbol.Pointolite S and optical scattering pattern 120 are that array is arranged, and pointolite S and 120 settings opposite to one another of optical scattering pattern.Be random arrangement compared to the optical scattering pattern of the LGP 100 that Fig. 2 illustrated 120, the set-up mode (array arrangement) like the optical scattering pattern 120 of the LGP 104 that Fig. 7 illustrated helps obtaining more uniform surface light source P.
In sum, it is diffusion patterned 130 that above-mentioned LGP 100,102,104 has optical scattering pattern 120 and optics simultaneously, can make the light L that penetrates from pointolite S through LGP 100,102, promptly form uniform surface light source P after 104.Particularly, optics diffusion patterned 130 is covered with whole exiting surface 110b and extends along first direction DL, and such set-up mode helps light L and produces diffusion at exiting surface 110b.Thus, use the backlight module of above-mentioned LGP 100,102,104 can not need to re-use blooming piece (like optical diffusion sheet etc.), can obtain uniform surface light source, help reducing cost.And,,, and then can promote the briliancy of area source P so the extent of deterioration of light L reduces because light L need not to pass through the blooming piece of extra setting again.
The LGP of the utility model is except using the backlight module of liquid crystal panel; Can also use in office what is the need for to form in the lighting device of area source; And can use:, be not limited only in the technical field of liquid crystal panel like lighting field, illumination and decoration field, plant illumination demand or the like in the proper technique field.
[backlight module]
Fig. 8 is the synoptic diagram of a kind of backlight module of the utility model embodiment.Please with reference to Fig. 8, backlight module 200 for example is the backlight module of straight-down negative, and backlight module 200 comprises: a plurality of pointolite S and LGP 210.This LGP 210 is arranged on the side of pointolite S.LGP 210 can make the light L that sends from pointolite S change area source P into.
It should be noted that LGP 210 can use above-mentioned LGP 100,102,104.With LGP 100 is example, and LGP 100 comprises: body 110, a plurality of optical scattering pattern 120 and a plurality of optics diffusion patterned 130.Body 110 have incidence surface 110a, with subtend in the exiting surface 110b of incidence surface 110a, and body 110 has first direction DL interlaced with each other and second direction DS.Optical scattering pattern 120 is arranged at incidence surface 110a, and each optical scattering pattern 120 subtend is in every bit light source S.Optics diffusion patterned 130 is arranged at exiting surface 110b, and optics diffusion patterned 130 extends along first direction DL, and these optics diffusion patterned 130 are arranged along second direction DS.
Likewise, use the backlight module of above-mentioned LGP 100,102,104 that uniform surface light source can be provided, and need not the additional optical diaphragm.About the detailed structure of LGP 100,102,104 as stated, promptly do not repeat at this.
Fig. 9 is the synoptic diagram of another backlight module of the utility model embodiment.In Fig. 9, the assembly identical with Fig. 8 indicates with identical symbol.Please with reference to Fig. 9, this backlight module 202 also can comprise: optical reflection sheet 220, subtend are provided with (Fig. 9 has only represented two optical reflection sheets 220 that side surface 110c is other) in four side surface 110c.
In other words, except the mode of utilizing optical reflecting layer shown in Figure 6 140, optical reflection sheet 220 shown in Figure 9 also capable of using is with in the light L reflected back LGP 210, to promote light utilization.Optical reflection sheet 220 can be at a distance of four side surface 110c one fixed ranges and being provided with, and also can be close to four side surface 110c and are provided with.
In sum, LGP of the utility model and backlight module have the following advantages at least:
LGP can be used in the direct type backlight module.The reflecting surface of LGP has local optical scattering pattern, carries out scattering so that come from the light of pointolite.Then utilize the diffusion patterned light even diffusedization that makes of optics of the exiting surface be arranged on LGP, wherein, optics diffusion patterned along LGP first direction and extend and arrange along the second direction of LGP.LGP with above-mentioned design can produce the function of diffusion sheet, to replace diffusion sheet, therefore need not the extra diffusion sheet that is provided with.The briliancy that thus, can reduce cost of manufacture and promote area source.Particularly, LGP of the utility model and backlight module can be taken into account the uniform properties and the briliancy requirement of area source.
Though the utility model discloses as above with embodiment; Right its is not in order to limit the utility model; Has common knowledge under any in the technical field; In spirit that does not break away from the utility model and scope, when doing a little change and retouching, so the protection domain of the utility model is as the criterion when looking the claimed scope of accompanying Claim.
Claims (19)
1. LGP, it is characterized in that: described LGP makes many light change an area source into, and this LGP comprises: a body; Described body have an incidence surface, with subtend in an exiting surface of this incidence surface, and this body has a first direction interlaced with each other and a second direction; A plurality of optical scattering patterns; Described a plurality of optical scattering pattern setting is in this incidence surface, and each bar light is each those optical scattering pattern of incident respectively; And a plurality of optics are diffusion patterned; Diffusion patterned this exiting surface that is arranged at of described a plurality of optics, those optics are diffusion patterned to be extended along this first direction, and those optics are diffusion patterned arranges along this second direction.
2. LGP according to claim 1 is characterized in that: this optical scattering pattern setting is in this incidence surface of part.
3. LGP according to claim 1 is characterized in that: the diffusion patterned optics groove that comprises of those optics, those optics grooves are to be selected from V font groove, semi-circular grooves, R groove and combination thereof.
4. LGP according to claim 1 is characterized in that: the diffusion patterned optics thrust that comprises of this optics, those optics thrusts are to be selected from V font thrust, half-circle projection thing, R thrust and combination thereof.
5. LGP according to claim 1 is characterized in that: this body also comprises: four side surfaces; Described four side surfaces are connected between this incidence surface and this exiting surface.
6. LGP according to claim 5 is characterized in that also comprising: an optical reflecting layer; Described optical reflecting layer is arranged on four side surfaces.
7. LGP according to claim 1 is characterized in that: those light are respectively from a plurality of pointolite outgoing, and point light sources comprises: light emitting diode.
8. LGP according to claim 7 is characterized in that: point light sources and those optical scattering patterns are that array is arranged, and point light sources and the setting opposite to one another of those optical scattering patterns.
9. LGP according to claim 1 is characterized in that: this first direction is interlaced with each other with this second direction and be perpendicular to one another.
10. a backlight module comprises: a plurality of pointolites; An and LGP; Described LGP is arranged on a side of point light sources; It is characterized in that: this LGP makes the light that sends from point light sources change an area source into; This LGP comprises: a body; Described body have an incidence surface, with subtend in an exiting surface of this incidence surface, and this body has a first direction interlaced with each other and a second direction; A plurality of optical scattering patterns; Described a plurality of optical scattering pattern setting is in this incidence surface, and each bar light is each those optical scattering pattern of incident respectively; And a plurality of optics are diffusion patterned; Diffusion patterned this exiting surface that is arranged at of described a plurality of optics, those optics are diffusion patterned to be extended along this first direction, and those optics are diffusion patterned arranges along this second direction.
11. backlight module according to claim 10 is characterized in that: this optical scattering pattern setting is in this incidence surface of part.
12. backlight module according to claim 10 is characterized in that: the diffusion patterned optics groove that comprises of those optics, those optics grooves are to be selected from V font groove, semi-circular grooves, R groove and combination thereof.
13. backlight module according to claim 10 is characterized in that: the diffusion patterned optics thrust that comprises of this optics, those optics thrusts are to be selected from V font thrust, half-circle projection thing, R thrust and combination thereof.
14. backlight module according to claim 10 is characterized in that: this body also comprises: four side surfaces; Described four side surfaces are connected between this incidence surface and this exiting surface.
15. backlight module according to claim 14 is characterized in that also comprising: an optical reflecting layer; Described optical reflecting layer is arranged on four side surfaces.
16. backlight module according to claim 15 is characterized in that also comprising: an optical reflection sheet; Described optical reflection sheet subtend is provided with in four side surfaces.
17. backlight module according to claim 10 is characterized in that: point light sources comprises: light emitting diode.
18. backlight module according to claim 10 is characterized in that: point light sources and those optical scattering patterns are that array is arranged, and point light sources and the setting opposite to one another of those optical scattering patterns.
19. backlight module according to claim 10 is characterized in that: this first direction is interlaced with each other with this second direction and be perpendicular to one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137725U CN202404275U (en) | 2012-01-13 | 2012-01-13 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137725U CN202404275U (en) | 2012-01-13 | 2012-01-13 | Light guide plate and backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN202404275U true CN202404275U (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200137725U Expired - Fee Related CN202404275U (en) | 2012-01-13 | 2012-01-13 | Light guide plate and backlight module |
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| Country | Link |
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| CN (1) | CN202404275U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454718A (en) * | 2013-09-27 | 2013-12-18 | 上海向隆电子科技有限公司 | Light guide plate |
| CN103851540A (en) * | 2012-11-29 | 2014-06-11 | 南京高一智光学科技有限公司 | Light guide plate for backlight module |
| CN111402723A (en) * | 2019-11-21 | 2020-07-10 | 友达光电股份有限公司 | Backlight module |
-
2012
- 2012-01-13 CN CN2012200137725U patent/CN202404275U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851540A (en) * | 2012-11-29 | 2014-06-11 | 南京高一智光学科技有限公司 | Light guide plate for backlight module |
| CN103454718A (en) * | 2013-09-27 | 2013-12-18 | 上海向隆电子科技有限公司 | Light guide plate |
| CN111402723A (en) * | 2019-11-21 | 2020-07-10 | 友达光电股份有限公司 | Backlight module |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20180113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |