CN102289030A - Light guide module and backlight module - Google Patents
Light guide module and backlight module Download PDFInfo
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- CN102289030A CN102289030A CN 201110232049 CN201110232049A CN102289030A CN 102289030 A CN102289030 A CN 102289030A CN 201110232049 CN201110232049 CN 201110232049 CN 201110232049 A CN201110232049 A CN 201110232049A CN 102289030 A CN102289030 A CN 102289030A
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- light guide
- guide plate
- light
- reflective structure
- module
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Abstract
The invention relates to a light guide module and a backlight module and aims to provide the light guide module, which comprises a light guide plate, a frame and a first reflecting structure, wherein the light guide plate has a light emergence surface and a first side surface which is adjacent to the light emergence surface; the frame comprises a first wall; the light guide plate is arranged on the frame to make the first side surface correspond to the first wall; and the first reflecting structure is arranged on the first wall and corresponds to the first side surface, so that a light ray which is emitted from the light guide plate through the first side surface is reflected by the first reflecting structure and then enters the light guide plate through the first side surface. The invention is applicable to generation of a surface light source.
Description
[technical field]
The invention relates to a kind of light guide module and backlight module, particularly about a kind of light guide module and backlight module that has reflective structure in the light guide plate side.
[background technology]
In general side light type back light module framework, light enters from a side of light guide plate, and the exiting surface by light guide plate penetrates again.Since light directly advance characteristic, another side edge of the side that enters with respect to aforementioned light in light guide plate easily produces light leak, causes waste light and makes the intensity of the light that penetrates from exiting surface obviously weaken with respect to the intensity that enters light.Therefore, the at present strip reflecting piece of cooperation light guide plate cross section profile or sides that reflecting strips is pasted on aforementioned easy generation light leak of adopting with reflection ray, increase the intensity of the light that penetrates from exiting surface more.But along with the trend of LCD screen trends of design thickness slimming, it is more and more thinner that light guide plate also designs, and is difficult for so reflecting strips is pasted, and very easily causes reflecting strips to paste skew, makes light leak can't effectively suppress, still have the light waste.
[summary of the invention]
One object of the present invention is to provide a kind of light guide module, and it comprises: light guide plate has exiting surface and adjacent to first side surface of this exiting surface; Framework comprises first wall, this light guide plate be arranged on this framework so that this first side surface corresponding to this first wall; And first reflective structure, be arranged on this first wall and corresponding to this first side surface so that certainly the light that penetrates through this first side surface of this light guide plate by this first reflective structure reflection to enter this light guide plate through this first side surface again.
As optional technical scheme, this first wall is a floor.
As optional technical scheme, this first reflective structure is a reflecting piece, is attached on this first wall.
As further alternative technical scheme, the width of this reflecting piece is greater than the thickness of this light guide plate.
As optional technical scheme, this light guide plate has incidence surface, and this first side surface is with respect to this incidence surface.
As further alternative technical scheme, described light guide module comprises second reflective structure, this light guide plate has second side surface adjacent to this incidence surface, this framework comprises second wall, this second reflective structure be arranged on this second wall and corresponding to this second side surface so that certainly the light that penetrates through this second side surface of this light guide plate by this second reflective structure reflection to enter this light guide plate through this second side surface again.
Another object of the present invention is to provide a kind of backlight module, and it comprises: light guide plate has incidence surface, exiting surface and adjacent to the side surface of this exiting surface; Light source enters this light guide plate in order to emission light from this incidence surface; Framework comprises a wall, this light guide plate be arranged on this framework so that this side surface corresponding to this wall; And reflective structure, be arranged on this wall and corresponding to this side surface so that certainly this light of the part that penetrates through this side surface of this light guide plate by this reflective structure reflection to enter this light guide plate through this side surface again.
As optional technical scheme, this wall is a floor.
As optional technical scheme, this reflective structure is a reflecting piece, is attached on this wall.
As optional technical scheme, this side surface is with respect to this incidence surface.
Compared with prior art, light guide module of the present invention and backlight module thereof utilize the structural plane of this framework that this reflective structure is set, this reflective structure need not to be attached at the side surface of this light guide plate, solves the difficulty that attaches reflecting piece in the prior art on thin light guide plate side surface; In addition, because the size of this reflective structure needn't be subject to the cross section profile of this light guide plate, so the profile of this reflective structure can design profile greater than this side surface can effectively contain the side surface of this light guide plate, usable reflection, is avoided pasting the light leakage phenomena that easily skew still causes because of reflecting strips in the prior art through the light that side surface penetrates from this light guide plate.
[description of drawings]
Fig. 1 is the synoptic diagram of light guide module according to a preferred embodiment of the present invention.
Fig. 2 be among Fig. 1 light guide module along the part sectioned view of face line X-X.
Fig. 3 is the synoptic diagram according to the light guide module of one embodiment of the invention.
Fig. 4 is the synoptic diagram of backlight module according to a preferred embodiment of the present invention.
[embodiment]
See also Fig. 1 and Fig. 2, Fig. 1 is the synoptic diagram of light guide module 1 according to a preferred embodiment of the present invention, Fig. 2 be among Fig. 1 light guide module 1 along the part sectioned view of face line X-X.Light guide module 1 comprises light guide plate 12, framework 14 and reflective structure 16.Light guide plate 12 has the side surface 124 that exiting surface 122 reaches adjacent to exiting surface 122.Framework 14 comprises a wall, and in present embodiment, this wall is a floor 142.Light guide plate 12 be arranged on the framework 14 so that side surface 124 corresponding to floor 142.Reflective structure 16 is arranged on the floor 142 and corresponding to side surface 124, makes and can be reflected to enter light guide plate 12 through side surface 124 again by reflective structure 16 through light L1, L2 and the L3 (representing with dotted arrow) that side surface 124 penetrates from light guide plate 12.By this, the light that penetrates from side surface 124 can be utilized again, and then promotes the light emission rate of light guide module 1.
In prior art, because of reflecting piece need cut to suitable with the side surface cross section of light guide plate, so when light guide plate was thin, reflecting piece promptly was difficult to accurately be pasted on the side surface.Otherwise, because reflective structure 16 according to the present invention is not directly to be attached on the side surface 124, but be arranged at floor 142, so when light guide plate 12 thinner thicknesses, reflective structure 16 still can be brought into play its reflection function like a cork by being arranged at floor 142.Therefore, light guide module of the present invention 1 utilizes does not have directly related floor 142 with light guide plate 12 thickness, its wall can be relatively greater than side surface 124 areas of light guide plate 12, so reflective structure 16 can be arranged on the floor 142 over against side surface 124 easily.
In present embodiment, reflective structure 16 is a reflecting piece, be pasted on the floor 142 with gum, but the present invention for example directly is coated with reflective material to form reflective structure 16 not as limit on floor 142.In addition, in present embodiment, the width of reflective structure 16 is obviously greater than the thickness of light guide plate 12, so complete side surface 124 of containing of reflective structure 16 energy, usable reflection, is avoided aforementioned and paste the light leakage phenomena that skew still causes because of reflecting strips in prior art through the light that side surface 124 penetrates from light guide plate 12.But the present invention is not as limit, and on the Yu Shizuo, the width of reflecting piece approximates the thickness of light guide plate 12.What remark additionally is that in present embodiment, 124 of reflective structure 16 and side surfaces have the gap, help light guide plate 12 to be assembled to framework 14, but the present invention are not as limit.Draw close toward reflective structure 16 after for example being positioned over light guide plate 12 on the framework 14 again, can reduce or eliminate the gap, this can increase to be reflected by reflective structure 16 and enters the ratio of light guide plate 12 via side surface 124.In addition, in present embodiment, because of the wall construction near side surface 124 on the framework 14 is a floor 142, so reflective structure 16 settings thereon, but on the Yu Shizuo, if floor 142 does not exist, then reflection configuration 16 can be arranged at sidewall 144.Similarly, the reflection configuration 16 that is positioned on the sidewall 144 also can be brought into play aforementioned reflection function; At this moment, light guide plate 12 can design so that the side surface 124 more close reflection configurations 16 that are positioned on the sidewall 144 enter the ratio of light guide plate 12 to promote by reflective structure 16 reflections via side surface 124.
Supplementary notes is again, and in present embodiment, light guide module 1 is a side-light type light guide module 1, and light guide plate 12 has incidence surface 126, adjacent to exiting surface 122, uses for light to enter in the light guide plate 12.Side surface 124 is with respect to incidence surface 126, the character of directly advancing because of light, the light that enters light guide plate 12 via incidence surface 126 is easily from the apparent surface of incidence surface 126, be that side surface 124 overflows light guide plate 12, therefore the reflective structure 16 that is arranged at light guide plate 12 side surfaces 124 sides can produce higher light organic efficiency, and then increases from exiting surface 122 irradiant intensity.
See also Fig. 3, it is the synoptic diagram according to the light guide module 2 of one embodiment of the invention.Light guide module 2 is roughly the same with light guide module 1 structure, and being in light guide module 2 of main difference still comprises reflective structure 18,20 on other sidewalls 146,148 that are arranged at framework 14 respectively. Reflective structure 18,20 is respectively facing to the side surface 128,130 of light guide plate 12 adjacent to incidence surface 126.Similarly, reflective structure 18,20 can reflect light L4, the L5 (representing with dotted arrow) that penetrate through side surface 128,130 from light guide plate 12 to enter light guide plate 12 through side surface 128,130 again.Though side surface 128,130 is non-with respect to incidence surface 126, the light intensity that overflows light guide plate 12 through side surface 128,130 is less than the light intensity that overflows light guide plate 12 through side surface 124, but the reflex of reflective structure 18,20 still can increase light utilization, and then increases from exiting surface 122 irradiant intensity.About other explanations of reflective structure 18,20 and side surface 128,130, the related description that can consult aforementioned reflective structure 16 and side surface 124 repeats no more; Again, about other explanations of light guide module 2 each parts, the related description that also can consult aforementioned light guide module 1 also repeats no more.
See also Fig. 4, it is the synoptic diagram of backlight module 3 according to a preferred embodiment of the present invention.In present embodiment, backlight module 3 comprises aforementioned light guide module 2, and comprises light source 32 in light guide plate 12 incidence surfaces 126 sides, enters light guide plate 12 in order to emission light from incidence surface 126.In present embodiment, light source 32 is a linear light sorurce, is arranged on the framework 14, and the light of its emission (representing with solid arrow) enters light guide plate 12 through incidence surface 126.About other explanations of backlight module 3 each parts, the related description that can consult aforementioned each embodiment repeats no more.Therefore, from the light of light source 32 emission after incidence surface 126 enters light guide plate 12, some directly penetrates light guide plate 12 through exiting surface 122, and some light L1, L2 penetrate light guide plate 12 through side surface 124, also has small part light L4, L5 to penetrate light guide plate 12 through side surface 128,130.The light that penetrates light guide plate 12 through side surface 124,128,130 can most ofly be reflected to enter in the light guide plate 12 by reflective structure 16,18,20 again, penetrating light guide plate 12 via exiting surface 122, increases the light emission rate of backlight module 3.
Supplementary notes be, backlight module 3 is a side light type back light module, but the present invention is as limit, for example direct type backlight module also has suitable.In addition, light source 32 can be an optical wand, but the present invention is as limit, for example with leaded light post, pipe etc., from the elsewhere directing light to enter in the light guide plate 12 via incidence surface 126.Supplementary notes is again, in aforementioned each embodiment, 14 are provided with a reflecting piece 13 (as shown in Figure 2) in addition in light guide plate 12 in framework, adhere well to the basal surface 132 of light guide plate 12 relative exiting surfaces 122, in order to the light L6 in the reflection light guide plate 12 to advance towards exiting surface 122, this is a known techniques, needless to say gives unnecessary details.
Compared to prior art, especially when light guide plate is thin, light guide module of the present invention and the backlight module with this light guide module utilize the structural plane of framework that reflective structure is set, so reflective structure need not to be attached at the side surface of light guide plate, separate the difficulty that on the light guide plate side surface, attaches reflecting piece in the prior art into.In addition, the size of reflective structure of the present invention needn't be subject to the cross section profile of light guide plate, so the profile of reflective structure can design profile greater than side surface can effectively contain side surface, with the light of usable reflection, avoid pasting the light leakage phenomena that easily skew still causes because of reflecting strips in the prior art from the side surface ejaculation of light guide plate.
Though the present invention discloses as above with embodiment, so it is not that protection scope of the present invention is when being as the criterion with claims in order to qualification the present invention.
Claims (10)
1. light guide module is characterized in that comprising:
Light guide plate has exiting surface and adjacent to first side surface of this exiting surface;
Framework comprises first wall, this light guide plate be arranged on this framework so that this first side surface corresponding to this first wall; And
First reflective structure, be arranged on this first wall and corresponding to this first side surface so that certainly the light that penetrates through this first side surface of this light guide plate by this first reflective structure reflection to enter this light guide plate through this first side surface again.
2. light guide module as claimed in claim 1 is characterized in that this first wall is a floor.
3. light guide module as claimed in claim 1 is characterized in that this first reflective structure is a reflecting piece, is attached on this first wall.
4. light guide module as claimed in claim 3 is characterized in that the thickness of the width of this reflecting piece greater than this light guide plate.
5. light guide module as claimed in claim 1 is characterized in that this light guide plate has incidence surface, and this first side surface is with respect to this incidence surface.
6. light guide module as claimed in claim 5, it is characterized in that comprising second reflective structure, this light guide plate has second side surface adjacent to this incidence surface, this framework comprises second wall, this second reflective structure be arranged on this second wall and corresponding to this second side surface so that certainly the light that penetrates through this second side surface of this light guide plate by this second reflective structure reflection to enter this light guide plate through this second side surface again.
7. backlight module is characterized in that comprising:
Light guide plate has incidence surface, exiting surface and adjacent to the side surface of this exiting surface;
Light source enters this light guide plate in order to emission light from this incidence surface;
Framework comprises a wall, this light guide plate be arranged on this framework so that this side surface corresponding to this wall; And
Reflective structure, be arranged on this wall and corresponding to this side surface so that certainly this light of the part that penetrates through this side surface of this light guide plate by this reflective structure reflection to enter this light guide plate through this side surface again.
8. backlight module as claimed in claim 7 is characterized in that this wall is a floor.
9. backlight module as claimed in claim 7 is characterized in that this reflective structure is a reflecting piece, is attached on this wall.
10. backlight module as claimed in claim 7 is characterized in that this side surface is with respect to this incidence surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232049 CN102289030A (en) | 2011-08-15 | 2011-08-15 | Light guide module and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232049 CN102289030A (en) | 2011-08-15 | 2011-08-15 | Light guide module and backlight module |
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| Publication Number | Publication Date |
|---|---|
| CN102289030A true CN102289030A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110232049 Pending CN102289030A (en) | 2011-08-15 | 2011-08-15 | Light guide module and backlight module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165300A (en) * | 2013-05-17 | 2014-11-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module outer frame and backlight module |
| CN106151969A (en) * | 2015-04-13 | 2016-11-23 | 苏州璨宇光学有限公司 | Backlight module |
| CN112306264A (en) * | 2019-07-24 | 2021-02-02 | 淮安达方电子有限公司 | Luminous touch control board |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169541A (en) * | 2006-10-25 | 2008-04-30 | 中强光电股份有限公司 | Reflector plate and backlight module possessing the reflector plate |
| CN101344681A (en) * | 2008-08-07 | 2009-01-14 | 友达光电股份有限公司 | Backlight module with reflector plate buckling design and panel display apparatus |
| CN101458423A (en) * | 2007-12-12 | 2009-06-17 | 三星Sdi株式会社 | Liquid crystal display |
-
2011
- 2011-08-15 CN CN 201110232049 patent/CN102289030A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169541A (en) * | 2006-10-25 | 2008-04-30 | 中强光电股份有限公司 | Reflector plate and backlight module possessing the reflector plate |
| CN101458423A (en) * | 2007-12-12 | 2009-06-17 | 三星Sdi株式会社 | Liquid crystal display |
| CN101344681A (en) * | 2008-08-07 | 2009-01-14 | 友达光电股份有限公司 | Backlight module with reflector plate buckling design and panel display apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165300A (en) * | 2013-05-17 | 2014-11-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module outer frame and backlight module |
| CN106151969A (en) * | 2015-04-13 | 2016-11-23 | 苏州璨宇光学有限公司 | Backlight module |
| CN112306264A (en) * | 2019-07-24 | 2021-02-02 | 淮安达方电子有限公司 | Luminous touch control board |
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Application publication date: 20111221 |