CN202747242U - Light guide plate, back light module and display device - Google Patents
Light guide plate, back light module and display device Download PDFInfo
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- CN202747242U CN202747242U CN2012203850682U CN201220385068U CN202747242U CN 202747242 U CN202747242 U CN 202747242U CN 2012203850682 U CN2012203850682 U CN 2012203850682U CN 201220385068 U CN201220385068 U CN 201220385068U CN 202747242 U CN202747242 U CN 202747242U
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- light
- lgp
- guide plate
- micro
- light guide
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Abstract
The utility model relates to the technical field of displaying and provides a light guide plate, a back light module and a display device. The light guide plate comprises a recessed opening arranged on the lateral face of the light guide plate, partition plates with two as one group are arranged in the recessed opening, a micro structure is respectively arranged on the opposite surfaces of two partition plates in one group, and the micro structures are protrusions facing the opposite partition plates. The novel light guide plate structure enables light-emitting diodes (LEDs) to be embedded in the light guide plate to reduce light mixing distance and improve light utilization ratio. Simultaneously, the micro structures capable of changing light direction are arranged between the adjacent LEDs, so that spreading of light in the light guide plate is effectively guided. The micro structures having converging effect on light can effectively resolve the hot spot problem in the light guide plate. Use of the micro structures enables light emitted by a light source to be further diffused, even light mixing can be achieved in small light mixing distance, and achievement of narrow frame design is effectively ensured.
Description
Technical field
The utility model relates to the Display Technique field, particularly a kind of LGP, backlight module and display unit.
Background technology
Because liquid crystal molecule itself does not possess luminous power, therefore need to add light source in the existing liquid crystal display and obtain display frame.In the traditional backlight source, although CCFL(Cold Cathode Fluorescent Lamp, cold-cathode fluorescence lamp) at present in occupation of dominant position, but because LED(Light Emitting Diode, light emitting diode) has wide colour gamut, the advantage such as white point is adjustable, high dimming ratio and long-life, recently be developed as novel backlight, and in some console displays and LCD TV, be applied.
LED generally adopts straight-down negative or side entering type to arrange liquid crystal panel is shone as the backlight of liquid crystal indicator.No matter be any light source arrangement mode because LED is spot light, the light that each LED sends through a segment distance after fully diffusion, the light that LED sends through behind the mixed light just counter plate form uniform irradiation.Therefore all use LGP(Light Guide Panel, LGP in most backlight modules) come the light that light source sends is guided, to strive in short light mixing distance, forming even bright dipping.
For side entrance back, owing to itself being exactly the mode that adopts for panel is lightening, common distance backlight is very short, thereby LGP is the indispensable parts of side entrance back.Fig. 1 is the LED of side entrance back in the prior art and the set-up mode of LGP, wherein, the lamp bar is arranged on the side of backlight module, LED 1 in the lamp bar is separated by a distance setting with LGP 2, and the light that LED 1 sends forms planar emergent light counter plate and shines after the diffusion of passing through LGP 2 and guiding.At present when carrying out backlight design, only consider that the diameter of distance between LED and the LGP and the site of LGP own and density design and optimizes, and do not consider that LED rising angle and LED arrange the gap to the impact of LGP light distribution, and so that LGP light guide effect and imperfect.In addition, designer trends along with the narrow frame of liquid crystal display, the LED light mixing distance reduces gradually in the side entrance back, if can't in extremely short light mixing distance, form uniform mixed light, it is bad very easily to occur various demonstrations in the display frame, as because of the too high speck that occurs of some regional luminance (hotspot) phenomenon etc.
The utility model content
The technical problem that (one) will solve
For above-mentioned shortcoming, the utility model is not enough and problem that can't uniform mixed light provides a kind of LGP, backlight module and display unit in order to solve LGP light mixing distance in the prior art.
(2) technical scheme
For solving the problems of the technologies described above, the utility model specifically adopts following scheme:
At first, the utility model provides a kind of LGP, described LGP comprises: the recess that is arranged on described LGP side, being provided with per two in the described recess is one group dividing plate, two dividing plates of same group are respectively arranged with micro-structural on the relative surface, and described micro-structural is the projection towards relative dividing plate.
Preferably, the material of described micro-structural is identical with light guide panel material.
Preferably, the height of the projection of described micro-structural is identical or not identical.
Preferably, the pattern regular distribution of described micro-structural or irregular distribution.
On the other hand, the utility model also provides a kind of backlight module simultaneously, and described backlight module comprises aforesaid LGP.
Preferably, described backlight module also comprises the lamp bar that is arranged at least one side of described LGP, is provided with LED on the described lamp bar, and each described LED is embedded in the recess of described LGP.
Preferably, every group of described dividing plate is arranged in the zone between two LED of arbitrary neighborhood.
Preferably, described LGP side is provided with a plurality of recesses, take one group of described dividing plate as the interval, and embeds a LED in each described recess between adjacent two recesses.。
On the one hand, the utility model also provides a kind of display unit again, and described display unit comprises aforesaid backlight module.
(3) beneficial effect
A kind of novel light conducting plate structure is provided in the utility model, so that LED is embedded in the LGP to reduce light mixing distance, to improve light utilization, simultaneously between adjacent LED, provide the micro-structural that can change radiation direction, effectively guided the propagation of light in LGP; There is the micro-structural of the effect of converging effectively to solve hotspot problem in the LGP to light; The use of micro-structural also so that the luminous energy that light source sends spreads further, also can realize uniform mixed light under less light mixing distance, effectively guaranteed the realization of narrow frame design.
Description of drawings
Fig. 1 is the structural representation of side entrance back module in the prior art;
Fig. 2 is the structural representation of backlight module among the embodiment of the present utility model;
Fig. 3 is the thin section schematic diagram of micro-structural set-up mode among the embodiment of the present utility model;
Fig. 4 is the multiple convex shape of micro-structural among the embodiment of the present utility model and the embodiment schematic diagram of pattern.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope that the utility model is protected.
In the utility model, in order to make LGP in short as far as possible distance, reach uniform mixed light, thereby realize the narrow frame design of liquid crystal display device, adopted the mode of embedded LED in the LGP, each LED in the lamp bar is embedded in the recess of LGP at least one side setting, for convenience of description, the utility model is embedded in each LED in the lamp bar in the recess of one of them side setting of LGP.。
As first technical scheme of the present utility model, described LGP comprises: the recess that is arranged on described LGP side, being provided with per two in the described recess is one group dividing plate, two dividing plates of same group are respectively arranged with micro-structural on the relative surface, and described micro-structural is the projection towards relative dividing plate.
As second technical scheme of the present utility model, on the basis of first technical scheme, the material of described micro-structural is identical with light guide panel material.The material of LGP is generally PMMA(Polymethyl Methacrylate, poly-methyl methacrylate), COP(Cycio Olefins Polymer, cyclic olefin polymer) etc. current material, so the material of micro-structural also belongs to existing material.
As the 3rd technical scheme of the present utility model, on the basis of above-mentioned any one technical scheme, the height of the projection of described micro-structural is identical or not identical.
As the 4th technical scheme of the present utility model, on the basis of above-mentioned any one technical scheme, the pattern regular distribution of described micro-structural or irregular distribution.
As the 5th technical scheme of the present utility model, backlight module of the present utility model comprises the described LGP of above-mentioned any one technical scheme.
As the 6th technical scheme of the present utility model, on the basis of the 5th technical scheme, described backlight module also comprises the lamp bar that is arranged at least one side of described LGP, is provided with LED on the described lamp bar, and each described LED is embedded in the recess of described LGP.
As the 7th technical scheme of the present utility model, on the basis of the 6th technical scheme, every group of described dividing plate is arranged in the zone between two LED of arbitrary neighborhood.
As the 8th technical scheme of the present utility model, on the basis of the 6th technical scheme, described LGP side is provided with a plurality of recesses, take one group of described dividing plate as the interval, and embeds a LED in each described recess between adjacent two recesses.
As the 9th technical scheme of the present utility model, display unit of the present utility model comprises technique scheme five to eight any one described backlight modules.
Particularly, referring to Fig. 2, LGP 2 of the present utility model mainly comprises a plurality of recesses 3 that are arranged on described LGP side, because LED 1 is embedded in the described recess 3 of LGP 2, LGP 2 encases LED 1 fully, and the light that LED 1 sends is all absorbed, and has increased the utilization ratio of light; Secondly, because LED 1 is embedded, LED 1 light-emitting area arrives the distance of LGP and has dwindled, so that the narrow frame design of display device becomes possibility.
In addition, during owing to LED work, light intensity mainly concentrates on LED normal direction (being the place ahead), and away from the zone (being mainly the zone between adjacent two LEDs) of normal direction, light intensity is weak and light is at random; Because LED embeds in the recess, so that light mixing distance reduces, the light that LED sends not yet effectively spreads and namely enters in the LGP, therefore need to take further step to increase light intensity and realize uniform mixed light simultaneously.In the utility model, as shown in Figure 3, take one group of dividing plate as the interval, be respectively arranged with the micro-structural that is consisted of towards the projection of relative dividing plate by many places on the relative surface of two dividing plates of every group between the adjacent recess 3, described micro-structural mainly plays reflex.
(for ease of clearly illustrating, among Fig. 3 the shape of reflection micro-structural is adjusted and amplified, in the actual conditions, also should there be the micro-structural of the arc corresponding with the recess inner surface in the LED dead ahead, and the rib structure is also much smaller than illustrated case), like this, light at random is through after the adjustment of micro structured pattern, because the total reflection function of micro-structural is conducted light at random facing one direction, has effectively utilized light source at random.And because the micro-structural of projection can play the optically focused effect of prism, this regional light intensity is effectively increased, thereby efficiently solve the partially dark problem of regional light intensity between adjacent two LEDs, the hotspot problem is resolved.In addition, because the illumination between adjacent two LEDs is weak or even the unglazed zone of shining provides micro-structural, the light that LED sends can be diffused into this zone behind the leaded light of micro-structural, thereby so that the luminous energy that light source sends spreads further, indirectly increased the rising angle of LED, so that also can realize uniform mixed light under the less light mixing distance, effectively guaranteed the realization of narrow frame design.
In the utility model, the material of micro-structural is consistent with LGP, and profile determines according to LGP interior notches shape, as long as can play preferably fixation in the LGP interior notches during installation, adopts the modes such as engaging or applying all can.
At last, referring to Fig. 4, the concrete shape of micro-structural of the present utility model is not limited to the rib of even projection shown in Figure 3, and any convex shape that can play leaded light, optically focused or diffusion effect all can be applicable in the utility model.More specifically, the cross sectional shape of the projection in the utility model in the micro-structural and highly all unrestricted, but a plurality of ribs that the height of projection shown in Fig. 4 a differs, a plurality of column prisms, the rib shown in Fig. 4 c and the combination projection of column prism etc. that the height of projection shown in Fig. 4 b differs all effective application in the utility model; In addition, the global shape of micro structured pattern is also unrestricted, can be various curves, line segment even dot pattern, the micro structured pattern shown in Fig. 4 d is the line segment structure of irregular distribution, the dots structure that the micro structured pattern shown in Fig. 4 f is irregular distribution etc. for the micro structured pattern shown in crooked wave structure (solid line is the lowest part of projection for highest point, the dotted line of projection among the figure), Fig. 4 e.
LGP of the present utility model mainly consists of backlight module with light source, reflector plate etc. provides backlight for panel, and this backlight module is preferably the side entrance back module.Preferably, the utility model also provides a kind of display unit, and this display unit comprises as above said backlight module.Described display unit can be any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, LCD TV, liquid crystal display, DPF, mobile phone, panel computer.
A kind of novel light conducting plate structure is provided in the utility model, so that LED is embedded in the LGP to reduce light mixing distance, to improve light utilization, simultaneously between two adjacent LED, provide the micro-structural that can change radiation direction, effectively guided the propagation of light in LGP; There is the micro-structural of the effect of converging effectively to solve hotspot problem in the LGP to light; The use of micro-structural also so that the luminous energy that light source sends spreads further, also can realize uniform mixed light under less light mixing distance, effectively guaranteed the realization of narrow frame design.
Above embodiment only is used for explanation the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that does not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and real protection scope of the present utility model should be defined by the claims.
Claims (9)
1. a LGP is characterized in that, described LGP comprises:
Be arranged on the recess of described LGP side, being provided with per two in the described recess is one group dividing plate, and two dividing plates of same group are respectively arranged with micro-structural on the relative surface, and described micro-structural is the projection towards relative dividing plate.
2. LGP according to claim 1 is characterized in that, the material of described micro-structural is identical with light guide panel material.
3. LGP according to claim 1 is characterized in that, the height of the projection of described micro-structural is identical or not identical.
4. LGP according to claim 1 is characterized in that, the pattern regular distribution of described micro-structural or irregular distribution.
5. a backlight module is characterized in that, described backlight module comprises such as each described LGP among the claim 1-4.
6. backlight module according to claim 5 is characterized in that, described backlight module also comprises the lamp bar that is arranged at least one side of described LGP, is provided with LED on the described lamp bar, and each described LED is embedded in the recess of described LGP.
7. backlight module according to claim 6 is characterized in that, every group of described dividing plate is arranged in the zone between two LED of arbitrary neighborhood.
8. backlight module according to claim 6 is characterized in that, described LGP side is provided with a plurality of recesses, take one group of described dividing plate as the interval, and embeds a LED in each described recess between adjacent two recesses.
9. a display unit is characterized in that, described display unit comprises such as each described backlight module among the claim 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203850682U CN202747242U (en) | 2012-08-03 | 2012-08-03 | Light guide plate, back light module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203850682U CN202747242U (en) | 2012-08-03 | 2012-08-03 | Light guide plate, back light module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202747242U true CN202747242U (en) | 2013-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203850682U Expired - Fee Related CN202747242U (en) | 2012-08-03 | 2012-08-03 | Light guide plate, back light module and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202747242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190249A (en) * | 2020-02-26 | 2020-05-22 | Oppo广东移动通信有限公司 | Backlight module and electronic equipment thereof |
| WO2022082637A1 (en) * | 2020-10-22 | 2022-04-28 | 京东方科技集团股份有限公司 | Backlight substrate and manufacturing method therefor, backlight source, and display device |
-
2012
- 2012-08-03 CN CN2012203850682U patent/CN202747242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190249A (en) * | 2020-02-26 | 2020-05-22 | Oppo广东移动通信有限公司 | Backlight module and electronic equipment thereof |
| WO2022082637A1 (en) * | 2020-10-22 | 2022-04-28 | 京东方科技集团股份有限公司 | Backlight substrate and manufacturing method therefor, backlight source, and display device |
| CN114868075A (en) * | 2020-10-22 | 2022-08-05 | 京东方科技集团股份有限公司 | Backlight substrate and manufacturing method thereof, backlight source and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20210803 |