CN103308970A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
- Publication number
- CN103308970A CN103308970A CN2012100576411A CN201210057641A CN103308970A CN 103308970 A CN103308970 A CN 103308970A CN 2012100576411 A CN2012100576411 A CN 2012100576411A CN 201210057641 A CN201210057641 A CN 201210057641A CN 103308970 A CN103308970 A CN 103308970A
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- front surface
- backlight module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention relates to a light guide plate comprising a body and a plurality of semi-cylindrical net points. The body includes a light incidence surface, a front surface and a back surface opposite to the front surface. The light incidence surface is connected with the front surface and the back surface, and the light incidence surface and the front surface are perpendicular to each other. The front surface includes a light emergence surface and a border surface surrounding the light emergence surface. The net points are continuously distributed on the light incidence surface and are connected in sequence. Each net point includes two oppositely-arranged semi-circular bottom surfaces, a circular arc circumferential surface and a fixed surface arranged opposite to the circumferential surface, wherein the circumferential surface and the fixed surface are connected with the two bottom surfaces, the fixed surface is a plane and is arranged on the light incidence surface, and the radius of the bottom surfaces is larger than 0mm and smaller than 1mm. The central axis of each net point is perpendicular to the front surface and extends along the height direction of the net point, and the height of the net point is equal to the thickness of the light incidence surface along a direction perpendicular to the front surface. The invention further relates to a backlight module using the light guide plate.
Description
Technical field
The present invention relates to a kind of light guide plate and backlight module, relate in particular to a kind of light guide plate and backlight module that adopts side-mounted illumination.
Background technology
One side of as shown in Figure 1, being close to light guide plate 200 incidence surfaces generally can arrange a plurality of light sources 220.Because the emergence angle of the light of each light source 220 emission is less than 180 degree, and there is the interval between the zone of the light of adjacent two light sources, 220 emissions, therefore have a dark space 221 between two adjacent light sources 220, the light that light source 220 is launched seldom can be radiated in this dark space 221.The exiting surface 300(that dark space in the present light guide plate 200 generally can extend to light guide plate 200 is effective light-emitting zone of light guide plate 200, dashed region among Fig. 1) in, so that the Luminance Distribution on the exiting surface 300 is inhomogeneous.
Summary of the invention
In view of this, be necessary to provide a kind of equally distributed light guide plate of brightness and backlight module that makes exiting surface.
A kind of light guide plate, it comprises a plurality of sites of a body and semicylinder shape.This body comprises the back side of an incidence surface, front surface and one and the opposing setting of this front surface.This incidence surface connects this front surface and this back side, and this incidence surface is mutually vertical with this front surface.This front surface comprises an exiting surface and the frame face around this exiting surface.This a plurality of sites continuous distribution is on this incidence surface, and successively connection.Each site comprises the stationary plane of the semicircular bottom surface of two opposing settings, circular-arc periphery and and the opposing setting of this periphery, and this periphery and this stationary plane all connect this two bottom surfaces.This stationary plane is the plane, and is arranged on this incidence surface.The radius of each bottom surface is all greater than 0 millimeter and less than 1 millimeter.The central shaft of each site is perpendicular to this front surface, and this central shaft extends along the high direction of this site, each site high in this incidence surface along the thickness perpendicular to this front surface direction.
A kind of backlight module that utilizes above-mentioned light guide plate, it also comprises a plurality of light sources, these a plurality of surface of light sources arrange to these a plurality of sites.
Experimental results show that, dark space between adjacent two light sources all is positioned at outside this exiting surface, that is to say, when the light of light source arrives on this exiting surface, ray density is very sufficient, thereby so that light guide plate of the present invention and backlight module thereof can effectively be eliminated the dark space on this exiting surface, the brightness on the exiting surface is evenly distributed.
Description of drawings
Fig. 1 is the schematic diagram of the dark space that forms between adjacent two adjacent light source.
Fig. 2 is the structural representation of the backlight module of better embodiment of the present invention.
Fig. 3 is the structural representation of light guide plate of the backlight module of Fig. 1.
Fig. 4 is the structural representation of each site on the light guide plate of Fig. 3.
The main element symbol description
| |
100 |
| |
10、200 |
| |
101 |
| |
11 |
| The |
13 |
| |
15 |
| Exiting |
151、300 |
| The |
152 |
| The |
17 |
| The |
111 |
| The bottom surface | 112 |
| Periphery | 113 |
| Stationary plane | 114 |
| |
20、220 |
| The |
221 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
See also Fig. 2 and Fig. 3, be a kind of backlight module 100 that embodiment of the present invention provides, it comprises a light guide plate 10 and a plurality of light source 20.In the present embodiment, this light source 20 is light emitting diode (Light Emitting Diode, LED).
This light guide plate 10 comprises a body 101 and a plurality of site 111.This body 101 is the rectangular flat shape, and is made by light transmissive material, such as acryl resin, and polycarbonate, polyvinyl resin etc.This body 101 comprises an incidence surface 11, a back side 13, a front surface 15 and a side 17.This incidence surface 11 is positioned at the opposing both sides of this light guide plate 10 with this side 17, and is parallel to each other.This front surface 15 is positioned at the opposing both sides of this light guide plate 10 with this back side 13, and is parallel to each other.This front surface 15 and this back side 13 are connected between this incidence surface 11 and this side 17.This front surface 15 is mutually vertical with this incidence surface 11.This back side 13 is also mutually vertical with this incidence surface 11.In other embodiments, this body 101 also can be the plate wedge shape, that is to say, this back side 13 is obliquely installed with respect to this front surface 15.
This front surface 15 comprises an exiting surface 151 (dashed region among Fig. 2 and Fig. 3) and a frame face 152.This exiting surface 151 is positioned at the center of this front surface 15, and this frame face 152 arranges around this exiting surface 151.This exiting surface 151 is in the same plane with this frame face 152.
These a plurality of light sources 20 arrange towards these a plurality of sites 111.The light that this incidence surface 11 is used for this light source 20 is launched imports this light guide plate 10.This back side 13 is used for being incident upon its surperficial light to be reflected, and penetrates from this back side 13 to prevent light, improves the utilization factor of light.This exiting surface 151 is effective light-emitting zone of this light guide plate 10, derive this light guide plate 10 for the part that will incide its surperficial light, another part reflexes on this back side 13, so that light can pass through Multi reflection in this light guide plate 10, be delivered to an end at these 17 places, side with the end from these incidence surface 11 places.This side 17 is used for inciding its surperficial light to be reflected, and penetrates from this side 17 to prevent light.
These a plurality of sites 111 are the semicylinder shape, and continuous distribution is on this incidence surface 11.These a plurality of sites 111 connect successively.Diametric(al) along a cylindrical bottom surface cuts in half this right cylinder, just obtains two semicylinders.In conjunction with shown in Figure 4, each site 111 comprises the stationary plane 114 of the periphery 113 of the bottom surface 112 of two opposing settings, an arc and and these periphery 113 opposing settings.This periphery 113 and this stationary plane 114 all connect this two bottom surfaces 112.This stationary plane 114 is the plane, and is arranged on this incidence surface 11.Each bottom surface 112 is semicircle, and the radius R of each bottom surface 112 is greater than 0 millimeter and less than 1 millimeter.The central shaft of each site 111 is perpendicular to this front surface 15, and this central shaft extends along the direction of the high h of this site 111, and the high h of each site 111 equals this incidence surface 11 along the thickness H perpendicular to these front surface 15 directions.In the present embodiment, the radius R of this bottom surface 112 is 0.04 μ m.
In the present embodiment, this site 111 is formed on this incidence surface 11 by the mode of printing, and this site 111 is identical with the material of this body 101.In other embodiments, this light guide plate 10 obtains by the mode of ejection formation, this site 111 and this body 101 structure that is formed in one.
Experimental results show that, dark space between adjacent two light sources all is positioned at outside this exiting surface, that is to say, when the light of light source arrives on this exiting surface, ray density is very sufficient, thereby so that light guide plate of the present invention and backlight module thereof can effectively be eliminated the bright dark fringe on this exiting surface, the brightness on this exiting surface is evenly distributed.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. light guide plate, it comprises a plurality of sites of a body and semicylinder shape, this body comprises the back side of an incidence surface, front surface and one and the opposing setting of this front surface; This incidence surface connects this front surface and this back side, and this incidence surface is mutually vertical with this front surface; This front surface comprises an exiting surface and the frame face around this exiting surface; This a plurality of sites continuous distribution is on this incidence surface, and successively connection; Each site comprises the stationary plane of the semicircular bottom surface of two opposing settings, circular-arc periphery and and the opposing setting of this periphery, and this periphery and this stationary plane all connect this two bottom surfaces; This stationary plane is the plane, and is arranged on this incidence surface; The radius of each bottom surface is all greater than 0 millimeter and less than 1 millimeter; The central shaft of each site is perpendicular to this front surface, and this central shaft extends along the high direction of this site, each site high in this incidence surface along the thickness perpendicular to this front surface direction.
2. light guide plate as claimed in claim 1 is characterized in that, this exiting surface and this frame face are in the same plane.
3. light guide plate as claimed in claim 1 is characterized in that, the material of these a plurality of sites is identical with the material of this body.
4. light guide plate as claimed in claim 1 is characterized in that, these a plurality of sites and this body structure that is formed in one.
5. light guide plate as claimed in claim 1, it is characterized in that, this light guide plate also comprises a side, this side connects this front surface and this back side, this side and this incidence surface are positioned at the opposing both sides of this light guide plate, and be used for inciding its surperficial light and reflect, prevent that light from penetrating from this light guide plate.
6. backlight module, it comprises a plurality of light sources and a light guide plate of being somebody's turn to do such as claim 1, these a plurality of surface of light sources arrange to these a plurality of sites.
7. backlight module as claimed in claim 6 is characterized in that, this exiting surface and this frame face are in the same plane.
8. backlight module as claimed in claim 6 is characterized in that, the material of these a plurality of sites is identical with the material of this body.
9. backlight module as claimed in claim 6 is characterized in that, these a plurality of sites and this body structure that is formed in one.
10. backlight module as claimed in claim 6, it is characterized in that, this light guide plate also comprises a side, this side connects this front surface and this back side, this side and this incidence surface are positioned at the opposing both sides of this light guide plate, and be used for inciding its surperficial light and reflect, prevent that light from penetrating from this light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100576411A CN103308970A (en) | 2012-03-07 | 2012-03-07 | Light guide plate and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100576411A CN103308970A (en) | 2012-03-07 | 2012-03-07 | Light guide plate and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103308970A true CN103308970A (en) | 2013-09-18 |
Family
ID=49134389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100576411A Pending CN103308970A (en) | 2012-03-07 | 2012-03-07 | Light guide plate and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103308970A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004111352A (en) * | 2002-05-20 | 2004-04-08 | Mitsubishi Rayon Co Ltd | Surface light source device and light guide used therefor |
| US20040120138A1 (en) * | 2002-12-20 | 2004-06-24 | Chales Leu | Planar surface illuminator |
| EP1998197A1 (en) * | 2007-05-30 | 2008-12-03 | Samsung Electronics Co., Ltd. | Light guide plate, backlight assembly including the same, and liquid crystal display device including the same |
| TW201017242A (en) * | 2008-10-30 | 2010-05-01 | Coretronic Corp | Light guide plate and backlight module |
| CN101749612A (en) * | 2010-01-07 | 2010-06-23 | 深圳超多维光电子有限公司 | Backlight module |
| TWM416777U (en) * | 2011-01-26 | 2011-11-21 | Chunghwa Picture Tubes Ltd | Light guide plate and edge-lit backlight module |
-
2012
- 2012-03-07 CN CN2012100576411A patent/CN103308970A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004111352A (en) * | 2002-05-20 | 2004-04-08 | Mitsubishi Rayon Co Ltd | Surface light source device and light guide used therefor |
| US20040120138A1 (en) * | 2002-12-20 | 2004-06-24 | Chales Leu | Planar surface illuminator |
| EP1998197A1 (en) * | 2007-05-30 | 2008-12-03 | Samsung Electronics Co., Ltd. | Light guide plate, backlight assembly including the same, and liquid crystal display device including the same |
| TW201017242A (en) * | 2008-10-30 | 2010-05-01 | Coretronic Corp | Light guide plate and backlight module |
| CN101749612A (en) * | 2010-01-07 | 2010-06-23 | 深圳超多维光电子有限公司 | Backlight module |
| TWM416777U (en) * | 2011-01-26 | 2011-11-21 | Chunghwa Picture Tubes Ltd | Light guide plate and edge-lit backlight module |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |