CN102401323A - Backlight module and light guide plate thereof - Google Patents
Backlight module and light guide plate thereof Download PDFInfo
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- CN102401323A CN102401323A CN2010102817574A CN201010281757A CN102401323A CN 102401323 A CN102401323 A CN 102401323A CN 2010102817574 A CN2010102817574 A CN 2010102817574A CN 201010281757 A CN201010281757 A CN 201010281757A CN 102401323 A CN102401323 A CN 102401323A
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- lgp
- backlight module
- microstructure area
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Abstract
The invention relates to a backlight module and a light guide plate thereof. The light guide plate comprises an emergent surface, a bottom surface and an incident surface. The bottom surface is opposite to the emergent surface. The incident surface is positioned between the emergent surface and the bottom surface and is adjacent to the emergent surface and the bottom surface, the emergent surface has a plurality of discontinuous microstructure regions, and the microstructure regions are internally provided with a plurality of microstructures. Therefore, according to the invention, the emergent light uniformity of the light guide plate can be increased.
Description
Technical field
The present invention relates to a kind of backlight module and LGP thereof, particularly a kind of backlight module that has the LGP of discontinuous microstructure area and comprise this LGP.
Background technology
Fig. 1 shows the schematic perspective view of existing backlight module.This backlight module 1 comprises a plurality of LED11 and a LGP 12.Said LED 11 is in order to provide light.This LGP 12 comprises an exiting surface 121, a bottom surface 122 and an incidence surface 123.This bottom surface 122 is with respect to this exiting surface 121.This incidence surface 123 is between this light output surface 121 and this bottom surface 122, and in abutting connection with this exiting surface 121 and this bottom surface 122.This incidence surface 123 is a flat surface, and it accepts the light from said LED 11.
With reference to figure 2, because said LED 11 apart distances therefore can produce blanking bar (Mura) (shown in regional A) and clear zone (Hot Spot) at this exiting surface 121, and the generation bright dipping are inhomogeneous.In addition, if setting element 13 (for example screw) is arranged between said LED 11, make the spacing of two LED 11 become big, then this blanking bar can become obvious greatly and more, and this is so-called screw blanking bar (Screw Mura), shown in area B.
With reference to figure 3, in order to improve above-mentioned blanking bar (Mura), clear zone (Hot Spot) and screw blanking bar (Screw Mura), relevant technology in response to and give birth to.As shown in the figure, this LGP 12 also comprises a plurality of sites 124 and a plurality of micro-structural 125.Said site 124 is distributed in this exiting surface 121, and said micro-structural 125 continuitys are distributed in the whole surface of this incidence surface 123.Though said site 124 and said micro-structural 125 set up the problem that can solve blanking bar (Mura) and clear zone (Hot Spot) a little, but still can't solve the problem of screw blanking bar (Screw Mura).
Therefore, be necessary to provide the backlight module and the LGP thereof of an innovation and tool progressive, to address the above problem.
Summary of the invention
The present invention provides a kind of LGP, and it comprises an exiting surface, a bottom surface and an incidence surface.This bottom surface is with respect to this exiting surface.This incidence surface is between this exiting surface and this bottom surface, and in abutting connection with this exiting surface and this bottom surface, this incidence surface has a plurality of microstructure area, and said microstructure area is discontinuous, and has a plurality of micro-structurals in this microstructure area.
The present invention also provides a kind of backlight module, and it comprises an above-mentioned LGP and an a plurality of light source.Said light source is in order to provide light, and said surface of light source is to this incidence surface, and each microstructure area is relatively between two adjacent light sources.
Advantage of the present invention is that the micro-structural in the said microstructure area can change the direct of travel of the light that is mapped to said micro-structural, makes it upwards to this exiting surface, and improves the uniformity of this exiting surface.
Description of drawings
Fig. 1 shows the schematic perspective view of existing backlight module;
Fig. 2 shows the schematic top plan view of Fig. 1;
Fig. 3 shows the schematic perspective view of another kind of LGP in the existing backlight module;
Fig. 4 shows the schematic perspective view of first embodiment of backlight module of the present invention;
Fig. 5 shows the schematic top plan view of first embodiment of backlight module of the present invention;
Fig. 6 shows the sketch map of another state of first embodiment of backlight module of the present invention;
Fig. 7 shows the schematic perspective view of second embodiment of backlight module of the present invention;
Fig. 8 shows the schematic perspective view of the 3rd embodiment of backlight module of the present invention;
Fig. 9 shows the schematic perspective view of the 4th embodiment of backlight module of the present invention; And
Figure 10 shows the schematic perspective view of the 5th embodiment of backlight module of the present invention.
The primary clustering symbol description
1 existing backlight module
First embodiment of 2 backlight modules of the present invention
Second embodiment of 3 backlight modules of the present invention
The 3rd embodiment of 4 backlight modules of the present invention
The 4th embodiment of 5 backlight modules of the present invention
The 5th embodiment of 6 backlight modules of the present invention
11 LED
12 LGPs
13 setting elements
21 light sources
The 21a light source
22 LGPs
23 microstructure area
The 23a microstructure area
24 reflecting elements
25 microstructure area
26 microstructure area
27 microstructure area
28 microstructure area
121 exiting surfaces
122 bottom surfaces
123 incidence surfaces
124 sites
125 micro-structurals
221 exiting surfaces
222 bottom surfaces
223 incidence surfaces
224 lateral surfaces
231 micro-structurals
The 231a micro-structural
251 micro-structurals
261 micro-structurals
271 micro-structurals
281 micro-structurals
The specific embodiment
Fig. 4 shows the schematic perspective view of first embodiment of backlight module of the present invention.Fig. 5 shows the schematic top plan view of first embodiment of backlight module of the present invention.This backlight module 2 comprises a plurality of light sources 21 and a LGP 22.Said light source 21 is in order to provide light.In the present embodiment, said light source 21 is a plurality of LED.
This LGP 22 comprises an exiting surface 221, a bottom surface 222, an incidence surface 223 and a lateral surface 224.This bottom surface 222 is with respect to this exiting surface 221.This incidence surface 223 is between this exiting surface 221 and this bottom surface 222, and in abutting connection with this exiting surface 221 and this bottom surface 222.This lateral surface 224 is with respect to this incidence surface 223, and in abutting connection with this exiting surface 221 and this bottom surface 222.
This incidence surface 223 has a plurality of microstructure area 23, and said microstructure area 23 is discontinuous.Said light source 21 is in the face of this incidence surface 223, and each microstructure area 23 is relatively between two adjacent light sources 21.
Have a plurality of micro-structurals 231 in this microstructure area 23.In the present embodiment; Said micro-structural 231 is many grooves; And the density of said groove, angle and the degree of depth be adjustment to some extent according to the bright dipping uniformity coefficient; It depicts said groove on this incidence surface 223 of otherwise flat, and this incidence surface 223 of one of them almost parallel at least of said groove and limit that exiting surface 221 is intersected, and at least two grooves are parallel.
Be noted that said microstructure area 23 for discontinuous, i.e. two microstructure area 23 suitable distances at interval, and do not keep off the light that said light source 21 is sent.In addition, be flat surfaces between two microstructure area 23, so that the light that said light source 21 is sent can all successfully get into this LGP 22 via this incidence surface 223 haply.
In the present embodiment, the spacing (pitch) that two adjacent light sources are 21 is defined as P, and the width of this light source 21 is defined as W
L, the thickness of this LGP 22 is defined as T
LGP, the width of this microstructure area 23 is defined as W
S, the height of this microstructure area 23 is defined as H
S, wherein
P/4≤W
S≤P-W
L, and
With reference to figure 5, in this backlight module 2, the micro-structurals 231 in the said microstructure area 23 can change the direct of travel that is mapped to the light of said micro-structural 231 in this LGP 22, make this LGP 22 of its reflected back and upwards to this exiting surface 221.That is, said microstructure area 23 can be regarded as a plurality of virtual light sources or diffusion type reflecting surface.For example; After the light that said light source 21 is sent gets into this LGP 22; Because the effect of the lattice point structure of diffusion inside particle or this bottom surface 222 (Fig. 4); Can part light be reflexed to said micro-structural 231, said micro-structural 231 is again with this LGP 22 of this light reflected back and upwards to this exiting surface 221.Therefore; Former should be the zone C and the region D of blanking bar (Mura) and screw blanking bar (Screw Mura), and the said micro-structural 231 that then can have through said zone is incident upon the light of said micro-structural 231 with all; Mode with diffusion reflexes in this LGP 22; Making said zone C and region D similarly is as the virtual light source, lets these incidence surface 223 bright dippings become more even, and then makes that the bright dipping of this exiting surface 221 can be very even.
Preferably, this lateral surface 224 of this LGP or other side (not shown) have a reflecting element 24.This reflecting element 24 can be that reflector plate, reflectance coating, reflectance coating or other have the element of reflection function.This reflecting element 24 can reflex to said microstructure area 23 with more rays, to increase the function that it eliminates blanking bar.Perhaps, with reference to figure 6, this lateral surface 224 also can be another incidence surface, and it is outer also to be provided with said light source 21a with in the face of this lateral surface 224, and also has said microstructure area 23a on this lateral surface 224.Have a plurality of micro-structural 231a in this microstructure area 23a.The light that this lateral surface 224 outer light source 21a are launched also can enter in this LGP 22, and is mapped to the microstructure area 23 of this incidence surface 223.Perhaps, when the light in this LGP 22 was worn the outside that is mapped to this lateral surface 224, in order to lamp bar (light bar) the substrate (not shown) that said light source 21a is fixing, aluminium base for example can reflex to this light the microstructure area 23 of this incidence surface 223.Vice versa, when the light in this LGP 22 is worn the outside that is mapped to this incidence surface 223, in order to lamp bar (light bar) substrate that said light source 21 is fixed, also can this light be reflexed to the microstructure area 23a of this lateral surface 224.
Fig. 7 shows the schematic perspective view of second embodiment of backlight module of the present invention.The backlight module 3 of present embodiment is roughly the same with the backlight module 2 (Fig. 4) of this first embodiment; Wherein components identical is given identical numbering, difference be in, in the present embodiment; Have a plurality of micro-structurals 251 in this microstructure area 25; Said micro-structural 251 is many grooves, this incidence surface 223 of one of them approximate vertical at least of said groove and the limit that exiting surface 221 is intersected, and at least two grooves are parallel.
Fig. 8 shows the schematic perspective view of the 3rd embodiment of backlight module of the present invention.The backlight module 4 of present embodiment is roughly the same with the backlight module 2 (Fig. 4) of this first embodiment; Wherein components identical is given identical numbering; Difference be in, in the present embodiment, have a plurality of micro-structurals 261 in this microstructure area 26; Said micro-structural 261 is many grooves, and said groove is interlaced with each other or at least two grooves are interlaced with each other.
Fig. 9 shows the schematic perspective view of the 4th embodiment of backlight module of the present invention.The backlight module 5 of present embodiment is roughly the same with the backlight module 2 (Fig. 4) of this first embodiment; Wherein components identical is given identical numbering; Difference be in, in the present embodiment, have a plurality of micro-structurals 271 in this microstructure area 27; Said micro-structural 271 is many grooves, and said groove one of them is wavy at least.
Figure 10 shows the schematic perspective view of the 5th embodiment of backlight module of the present invention.The backlight module 6 of present embodiment is roughly the same with the backlight module 2 (Fig. 4) of this first embodiment; Wherein components identical is given identical numbering, difference be in, in the present embodiment; Have a plurality of micro-structurals 281 in this microstructure area 28, and said micro-structural 281 is a plurality of potholes.
The foregoing description is merely explanation principle of the present invention and effect thereof, and unrestricted the present invention, so those skilled in the art make amendment to the foregoing description and change and still do not take off spirit of the present invention.Interest field of the present invention should be listed like claim.
Claims (22)
1. LGP comprises:
One exiting surface;
One bottom surface is with respect to this exiting surface; And
One incidence surface, between this exiting surface and this bottom surface, and in abutting connection with this exiting surface and this bottom surface, this incidence surface has a plurality of microstructure area, and said microstructure area is discontinuous, and has a plurality of micro-structurals in this microstructure area.
2. LGP as claimed in claim 1 also comprises a lateral surface, and with respect to this incidence surface, and in abutting connection with this exiting surface and this bottom surface, wherein this lateral surface has a reflecting element.
3. LGP as claimed in claim 2, wherein this reflecting element is reflector plate, reflectance coating or reflectance coating.
4. LGP as claimed in claim 1, wherein said micro-structural are many grooves.
5. LGP as claimed in claim 4, the limit that one of them this incidence surface and exiting surface of almost parallel at least of wherein said groove is intersected.
6. LGP as claimed in claim 4, the limit that one of them this incidence surface and exiting surface of approximate vertical at least of wherein said groove is intersected.
7. LGP as claimed in claim 4, wherein said groove is interlaced with each other.
8. LGP as claimed in claim 4, wherein said groove one of them is wavy at least.
9. LGP as claimed in claim 1, wherein said micro-structural are a plurality of potholes.
10. LGP as claimed in claim 1, wherein the thickness of this LGP is defined as T
LGP, the height of this microstructure area is defined as H
S, wherein
11. a backlight module comprises:
A plurality of light sources are in order to provide light; And
One LGP comprises:
One exiting surface;
One bottom surface is with respect to this exiting surface; And
One incidence surface, between this exiting surface and this bottom surface, and in abutting connection with this exiting surface and this bottom surface, this incidence surface has a plurality of microstructure area, and said microstructure area is discontinuous, and has a plurality of micro-structurals in this microstructure area;
Wherein, said surface of light source is to this incidence surface, and each microstructure area is relatively between two adjacent light sources.
12. backlight module as claimed in claim 11, wherein said light source are a plurality of LED.
13. backlight module as claimed in claim 11, wherein this LGP also comprises a lateral surface, and with respect to this incidence surface, and in abutting connection with this exiting surface and this bottom surface, this lateral surface has a reflecting element.
14. backlight module as claimed in claim 13, wherein this reflecting element is reflector plate, reflectance coating or reflectance coating.
15. backlight module as claimed in claim 11, wherein said micro-structural are many grooves.
16. backlight module as claimed in claim 15, the limit that one of them this incidence surface and exiting surface of almost parallel at least of wherein said groove is intersected.
17. backlight module as claimed in claim 15, the limit that one of them this incidence surface and exiting surface of approximate vertical at least of wherein said groove is intersected.
18. backlight module as claimed in claim 15, wherein said groove is interlaced with each other.
19. backlight module as claimed in claim 15, wherein said groove one of them is wavy at least.
20. backlight module as claimed in claim 11, wherein said micro-structural are a plurality of potholes.
21. backlight module as claimed in claim 11, wherein the spacing between two adjacent light sources is defined as P, and the width of this light source is defined as W
L, the thickness of this LGP is defined as T
LGP, the width of this microstructure area is defined as W
S, the height of this microstructure area is defined as H
S, P/4≤W wherein
S≤P-W
L, and
22. backlight module as claimed in claim 11, wherein this LGP also comprises a lateral surface, and with respect to this incidence surface, and in abutting connection with this exiting surface and this bottom surface, this lateral surface peripheral hardware has said light source, and has said microstructure area on this lateral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102817574A CN102401323A (en) | 2010-09-13 | 2010-09-13 | Backlight module and light guide plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102817574A CN102401323A (en) | 2010-09-13 | 2010-09-13 | Backlight module and light guide plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102401323A true CN102401323A (en) | 2012-04-04 |
Family
ID=45883799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102817574A Pending CN102401323A (en) | 2010-09-13 | 2010-09-13 | Backlight module and light guide plate thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102401323A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181634A (en) * | 2014-08-12 | 2014-12-03 | 京东方光科技有限公司 | Light guide plate, backlight module and display device |
| CN104536079A (en) * | 2014-12-31 | 2015-04-22 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with light guide plate |
| CN106646970A (en) * | 2016-12-01 | 2017-05-10 | 奥英光电（苏州）有限公司 | Liquid crystal display |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818761A (en) * | 2006-03-08 | 2006-08-16 | 友达光电股份有限公司 | Light guiding structure |
| TW200641454A (en) * | 2005-05-23 | 2006-12-01 | Hon Hai Prec Ind Co Ltd | Backlight module |
-
2010
- 2010-09-13 CN CN2010102817574A patent/CN102401323A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200641454A (en) * | 2005-05-23 | 2006-12-01 | Hon Hai Prec Ind Co Ltd | Backlight module |
| CN1818761A (en) * | 2006-03-08 | 2006-08-16 | 友达光电股份有限公司 | Light guiding structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181634A (en) * | 2014-08-12 | 2014-12-03 | 京东方光科技有限公司 | Light guide plate, backlight module and display device |
| CN104181634B (en) * | 2014-08-12 | 2017-10-17 | 京东方光科技有限公司 | Light guide plate, backlight module and display device |
| CN104536079A (en) * | 2014-12-31 | 2015-04-22 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with light guide plate |
| WO2016106854A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module having same |
| CN106646970A (en) * | 2016-12-01 | 2017-05-10 | 奥英光电（苏州）有限公司 | Liquid crystal display |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Tainan City, Taiwan, China Applicant after: Chi Lin Optoelectronics Co., Ltd. Address before: Tainan County, Taiwan, China Applicant before: Chi Lin Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHI LIN TECHNOLOGY CO., LTD. TO: QILING PHOTOELECTRIC CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |