CN103454718A - Light guide plate - Google Patents
Light guide plate Download PDFInfo
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- CN103454718A CN103454718A CN2013104519785A CN201310451978A CN103454718A CN 103454718 A CN103454718 A CN 103454718A CN 2013104519785 A CN2013104519785 A CN 2013104519785A CN 201310451978 A CN201310451978 A CN 201310451978A CN 103454718 A CN103454718 A CN 103454718A
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- guide plate
- light guide
- light
- photo structure
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a light guide plate. The light guide plate can be matched with a plurality of point light sources to form a direct type backlight module. The plurality of point light sources directly adhere to the light entering surface on the back of the light guide plate, and accordingly the light outlet surface of the front of the light guide plate forms original bright blocks. The light guide plate comprises a plurality of first light extraction structures and a plurality of second light extraction structures. The plurality of first light extraction structures are designed at the positions corresponding to the original bright blocks and coincide with the positions of the plurality of point light sources in an orthographic projection direction. The plurality of second light extraction structures are arranged around one random first light extraction structure to be used for sharing light of the original bright blocks, and extra later bright blocks are formed. The first light extraction structures and the second light extraction structures are formed by a plurality of grooves arranged in a radial mode. The light guide plate has the advantages that the later bright blocks share light of the original bright blocks, and in human vision perception, the light outlet surface of the front of the light guide plate is thought to be a uniform surface light source without abrupt bright blocks.
Description
Technical field
The present invention relates to a kind of light guide plate, relate in particular to a kind of light guide plate for the directly-down light source module.
Background technology
The backlight module of conventional liquid crystal is disposed at the liquid crystal panel back side, to provide liquid crystal panel required display light source.Backlight module can be divided into " side-light type " according to light source position and reach " straight-down negative " design, and wherein the backlight module of " straight-down negative " design adopts a plurality of light emitting diodes as light source gradually, to replace traditional white heat fluorescent tube or fluorescent tube.When light emitting diode during as light source, normally reserved one section exhibition electrical distance, then be arranged at the below of liquid crystal panel, so that being provided, liquid crystal panel goes out uniformly light source.So the backlight module of " straight-down negative " design can be very thick.The framework of " side-light type " backlight module is light inlet from the side, so can be thinner; But the light emitting diode a used number is at least 2.5 times of unidimensional " straight-down negative " backlight module.
Therefore, if can directly light emitting diode be fitted in to the back side of light guide plate, just can take into account the advantage of above-mentioned two kinds of designs.But in fact, while directly fitting, the intensity of light can be the strongest on positive view directions (the namely normal direction of lumination of light emitting diode face), therefore must be with the exhibition photo structure on light guide plate by the light of the positive view directions of light emitting diode towards offside reflection, but the exhibition luminous energy power of exhibition photo structure has the limit eventually, so in directly the fit orthogonal projection zone of light guide plate position of light emitting diode, still can form one bright, cause the area source surface brightness inhomogeneous.
Therefore, how developing a kind of backlight module, improve disappearance and inconvenience that above-mentioned design brings simultaneously, is the current instant important topic of various equivalent modifications.
Summary of the invention
In view of previous described technology, one object of the present invention is to solve the directly-down light source module and produces the problem of bright piece of brightness higher than mean value in corresponding light-emitting component placement.
An embodiment of the present invention provides a kind of light guide plate, and described light guide plate coordinates formation one light source module with a light-emitting component, and luminescence component has a light-emitting area.Described light guide plate coordinates formation one direct-type backlight module with a plurality of pointolites; A plurality of pointolites directly are fitted in the incidence surface at the light guide plate back side, so the exiting surface in the light guide plate front forms original bright.Light guide plate comprises a plurality of first gets photo structure and a plurality of second and gets photo structure, and described a plurality of first gets photo structure is located at the position of corresponding described original bright, and with a plurality of pointolites position, overlaps on the orthogonal projection direction.Described a plurality of second get photo structure be arranged on arbitrary described first get photo structure around, in order to share the light of described original bright, form bright of extra rear system.Described first gets photo structure and described second gets photo structure and all comprises radially a plurality of grooves of arranging, its beneficial effect is bright block of light of having shared original bright of rear system, in the human vision impression, can think that the exiting surface in light guide plate front is evenly there is no the area source of lofty bright.
Preferably, a plurality of described first get the exiting surface that photo structure is arranged on the light guide plate front.
Preferably, a plurality of described second get the exiting surface that photo structure is arranged on the light guide plate front.
Preferably, a plurality of described first get the incidence surface that photo structure is arranged on the light guide plate back side.
Preferably, a plurality of described second get the incidence surface that photo structure is arranged on the light guide plate back side.
Described first gets photo structure and second gets the groove of photo structure and can design the exiting surface in the light guide plate front, can certainly design the incidence surface at the light guide plate back side, or select a design in light guide plate positive and another design at the light guide plate back side.From the angle of technology, get photo structure and second except a plurality of first of groove composition on light guide plate and get photo structure, still can design the optical microstructure patterns (Pattern) that other help bright dippings.For convenient processing, avoid the existence of groove and optical microstructure patterns, interfere with each other the degree of freedom in design, usually groove and optical microstructure patterns are designed respectively at light guide plate front and the back side.In other words, if first get photo structure and second and get photo structure in the light guide plate front, optical microstructure patterns is at the light guide plate back side; Vice versa.
Preferably, arbitrary described first to get photo structure be the rice word structure consisted of eight grooves arranging radially, and each described groove points to one described second and gets photo structure.
As mentioned above, arbitrary described first to get photo structure be the rice word structure consisted of eight grooves arranging radially, and each groove points to one described second and gets photo structure.Certainly, radial first to get photo structure be also feasible for other, if might not rice word structure, as long as can arrange in pairs or groups, second gets photo structure, allows original bright with bright of rear system, can be evenly distributed on light guide plate and get final product.
Preferably, the section of described groove is V-shaped.
Preferably, the section of described groove takes the shape of the letter U.Certainly, the section of described groove can be also that other have symmetric geometric figure.
Preferably, arbitrary described groove is Y word bifurcated, connects two sub-trenches.In other words, groove can also, as dendritic continuous branch, on actual design, can consider to allow the gash depth of branch be less than the gash depth be branched.
Positive progressive effect of the present invention is: described light guide plate utilization is located on exiting surface and the corresponding photo structure of getting be arranged in around light-emitting component, can allow bright block of light of sharing original bright of rear system, in the human vision impression, can think that the exiting surface in light guide plate front is evenly there is no the area source of lofty bright.Therefore, the present invention can effectively eliminate the light source module and produce the obviously problem of bright in corresponding luminescence component arrangement place, thereby the planar light source with uniform light intensity is provided.
The accompanying drawing explanation
The light guide plate that Fig. 1 is the embodiment of the present invention 1 and the exploded view of peripheral structure thereof.
The vertical view of the light guide plate that Fig. 2 is the embodiment of the present invention 1.
The partial enlarged drawing that Fig. 3 is the light guide plate shown in Fig. 2.
The light guide plate that Fig. 4 is the embodiment of the present invention 2 and the cut-open view of peripheral structure thereof.
The light guide plate that Fig. 5 is the embodiment of the present invention 3 and the cut-open view of peripheral structure thereof.
[Reference numeral]
1,1a, 1b light guide plate
10 incidence surfaces
12 exiting surfaces
14 first get photo structure
16 second get photo structure
18,18a groove
19 optical microstructure patterns
2 pointolites
20 circuit boards
3 down straight aphototropism mode set
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
The light guide plate that Fig. 1 is the embodiment of the present invention 1 and the exploded view of peripheral structure thereof.As shown in Figure 1, described light guide plate 1 coordinates formation one direct-type backlight module 3 with a plurality of pointolites 2, and described pointolite 2 can be by realizing as light emitting diode.
A plurality of pointolites 2 directly are attached to the incidence surface 10 of light guide plate 1, and form the primary light piece at the exiting surface 12 in light guide plate 1 front.A plurality of pointolites 2 can be for being arranged on a circuit board 20 and forming and be electrically connected with circuit board 20, required electric power when by circuit board 20, capturing a plurality of pointolites 2 and light.
First gets photo structure 14 and second gets the exiting surface 12 that photo structure 16 can be arranged on light guide plate 1 front simultaneously, certain first gets photo structure 14 and second gets photo structure 16 and also can be arranged on the incidence surface 10 at light guide plate 1 back side simultaneously, perhaps make first to get photo structure 14 and second and get an exiting surface 12 that is arranged on light guide plate 1 front in photo structure 16, another is arranged on the incidence surface 10 at light guide plate 1 back side.
First gets photo structure 14 and second gets photo structure 16 and is consisted of a plurality of grooves 18 of arranging radially, as shown in Figure 3.Described groove 18 can be vee-cut or U-shaped groove, is also the V-shaped or U-shaped of the section of groove 18; Certainly, the section of described groove 18 can be also the symmetric geometric configuration of other tools.In the present embodiment, arbitrary a plurality of first to get photo structure 14 are the rice word structures that consist of eight grooves 18 arranging radially, and each groove 18 points to one described second and get photo structure 16, as shown in Figure 2.During actual enforcement, first to get photo structure 14 can be also other radial structures, as long as can arrange in pairs or groups, second gets photo structure 16, allows original bright with bright of rear system, can be evenly distributed on light guide plate 1 and get final product.
In sum, light guide plate of the present invention 1 is utilized and is arranged on first of pointolite 2 orthogonal projection directions and gets photo structure 14 and be arranged on first and get second around photo structure 14 and get the light that photo structure 16 is shared original bright spot, form extra bright spot rear processed, therefore, in the human vision impression, can think that the exiting surface 12 in light guide plate 1 front is evenly there is no the area source of lofty bright.
The light guide plate that Fig. 4 is the embodiment of the present invention 2 and the cut-open view of peripheral structure thereof.As shown in Figure 4, the light guide plate 1 of light guide plate 1a and embodiment 1 is similar, and identical element is with identical symbology.Difference that it should be noted that both is that the groove 18a of the light guide plate 1a shown in Fig. 4 is Y word bifurcated.Described groove 18a has a tip, makes the curvature distribution of groove 18a be discontinuous.When reality is implemented, described groove 18a also can connect two sub-trenches, makes groove 18a be dendritic continuous branch, and, on actual design, can make the gash depth of branch be less than the gash depth be branched.The function of each element of light guide plate 1a and related description, in fact identical with the light guide plate 1 of embodiment 1, do not repeat them here.Light guide plate 1a at least can reach the function identical with light guide plate 1.
Embodiment 3
The light guide plate that Fig. 5 is the embodiment of the present invention 3 and the cut-open view of peripheral structure thereof.As shown in Figure 5, the light guide plate 1 of light guide plate 1b and embodiment 1 is similar, and identical element is with identical symbology.Difference that it should be noted that both is that the front of the light guide plate 1b shown in Fig. 5 is designed with the optical microstructure patterns (Pattern) 19 that helps bright dipping.
The design of described optical microstructure patterns 19 is the uniformity coefficient by the light of exiting surface 12 outgoing in light guide plate 1b front in order to homogenising.For improving the degree of convenience of light guide plate 1b processing, and avoid groove 18 and the existence of optical microstructure patterns 19 to interfere with each other the degree of freedom in design, described groove 18 designs respectively front and the back side at light guide plate 1b with optical microstructure patterns 19.In the present embodiment, to be designs get photo structure 14 and second at the exiting surface 12, the first in light guide plate 1b front to groove 18 that to get the groove 18 of photo structure 16 be that design is at the incidence surface 10 at the light guide plate 1b back side; Certainly, when reality is implemented, can be also design get photo structure 14 and second at the incidence surface 10, the first at the light guide plate 1b back side to groove 18 that to get photo structure 16 be that design is at the exiting surface 12 in light guide plate 1b front.
The above, be only better embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (9)
1. a light guide plate, coordinate with a plurality of pointolites and form a direct-type backlight module, and a plurality of pointolites directly are fitted in the incidence surface at the light guide plate back side, and the exiting surface in the light guide plate front forms original bright, it is characterized in that, described light guide plate comprises:
A plurality of first gets photo structure, and described a plurality of first gets photo structure is located at the position of corresponding described original bright, and with the position of a plurality of pointolites, overlaps on the orthogonal projection direction, and described first gets photo structure comprises a plurality of grooves of arranging radially; And
A plurality of second gets photo structure, be located at arbitrary described first get photo structure around, described second gets photo structure also comprises radially a plurality of grooves of arranging, described second gets photo structure for sharing the light of described original bright, forms bright of extra rear system.
2. light guide plate as claimed in claim 1, is characterized in that, a plurality of described first gets the exiting surface that photo structure is arranged on the light guide plate front.
3. light guide plate as claimed in claim 1, is characterized in that, a plurality of described second gets the exiting surface that photo structure is arranged on the light guide plate front.
4. light guide plate as claimed in claim 1, is characterized in that, a plurality of described first gets the incidence surface that photo structure is arranged on the light guide plate back side.
5. light guide plate as claimed in claim 1, is characterized in that, a plurality of described second gets the incidence surface that photo structure is arranged on the light guide plate back side.
6. light guide plate as claimed in claim 1, is characterized in that, arbitrary described first to get photo structure be the rice word structure consisted of eight grooves arranging radially, and each described groove points to one described second and gets photo structure.
7. light guide plate as claimed in claim 6, is characterized in that, the section of described groove is V-shaped.
8. light guide plate as claimed in claim 6, is characterized in that, the section of described groove takes the shape of the letter U.
9. light guide plate as claimed in claim 6, is characterized in that, arbitrary described groove is Y word bifurcated, connects two sub-trenches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104519785A CN103454718A (en) | 2013-09-27 | 2013-09-27 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104519785A CN103454718A (en) | 2013-09-27 | 2013-09-27 | Light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103454718A true CN103454718A (en) | 2013-12-18 |
Family
ID=49737279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104519785A Pending CN103454718A (en) | 2013-09-27 | 2013-09-27 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103454718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035155A (en) * | 2014-03-18 | 2014-09-10 | 宁波萨瑞通讯有限公司 | PC (Poly Carbonate) light guide plate |
| CN108469008A (en) * | 2018-01-18 | 2018-08-31 | 北京灵犀微光科技有限公司 | Dodging device and lighting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2802545Y (en) * | 2005-06-16 | 2006-08-02 | 科桥电子股份有限公司 | Light guide structure of direct backlight mould set |
| CN1928651A (en) * | 2005-09-07 | 2007-03-14 | 鸿富锦精密工业（深圳）有限公司 | Straight down type back light module unit |
| CN202404275U (en) * | 2012-01-13 | 2012-08-29 | 苏州向隆塑胶有限公司 | Light guide plate and backlight module |
-
2013
- 2013-09-27 CN CN2013104519785A patent/CN103454718A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2802545Y (en) * | 2005-06-16 | 2006-08-02 | 科桥电子股份有限公司 | Light guide structure of direct backlight mould set |
| CN1928651A (en) * | 2005-09-07 | 2007-03-14 | 鸿富锦精密工业（深圳）有限公司 | Straight down type back light module unit |
| CN202404275U (en) * | 2012-01-13 | 2012-08-29 | 苏州向隆塑胶有限公司 | Light guide plate and backlight module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035155A (en) * | 2014-03-18 | 2014-09-10 | 宁波萨瑞通讯有限公司 | PC (Poly Carbonate) light guide plate |
| CN108469008A (en) * | 2018-01-18 | 2018-08-31 | 北京灵犀微光科技有限公司 | Dodging device and lighting device |
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Application publication date: 20131218 |