CN102261575A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN102261575A CN102261575A CN201010186005XA CN201010186005A CN102261575A CN 102261575 A CN102261575 A CN 102261575A CN 201010186005X A CN201010186005X A CN 201010186005XA CN 201010186005 A CN201010186005 A CN 201010186005A CN 102261575 A CN102261575 A CN 102261575A
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- point distribution
- incidence surface
- network point
- piconet
- light
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- 238000007598 dipping method Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The invention provides a backlight module which comprises a plurality of light emitting diodes and a light guide plate; the light guide plate comprises a light incoming surface, a light outgoing surface and a bottom surface; the light emitting diodes are uniformly arranged on the light incoming surface at intervals; the light incoming surface and the light outgoing surface are connected vertically; the bottom surface and the light outgoing surface are arranged opposite and the bottom surface is connected with the light incoming surface; light rays which are emitted by the light emitting diodes enter a light guide plate from a light incoming surface and are reflected to a light emitting surface by the bottom surface; the bottom surface is provided with a plurality of micro node structures which sink to the interior of the light guide plate; the bottom surface is provided with a plurality of discontinuous node distribution areas sequentially along the direction from close to the light incoming surface to far away from the light incoming surface; and in the node distribution area at the nearest distance from the light incoming surface, the depth of the micro node structures which are nearer from the light emitting diode is less, and the micro node structures are arrayed more sparse, and the depth of the micro node structures which are farther from the light emitting diode is greater, and the micro node structures are arrayed more dense.
Description
Technical field
The present invention relates to a kind of module backlight, particularly a kind of module backlight that can uniformly light-emitting.
Background technology
The light source that existing module backlight generally includes a LGP and is arranged on LGP one side.Described LGP comprises an incidence surface, an exiting surface that links to each other with described incidence surface and the bottom surface that is oppositely arranged with described exiting surface.Derive by described exiting surface after light being reflexed to exiting surface by the miniature site that is provided with on the described bottom surface.In order to make described LGP can bright dipping even, described miniature site can distribute more sparsely in the side near light source, and can distribute to such an extent that compare comparatively dense in the side away from light source.Yet, existing module backlight uses light emitting diode as light source more and more, and the emitting brightness of respective leds position can be bright significantly in other positions on the described exiting surface, thereby the side at the close light source of exiting surface forms a plurality of significantly " bright spot " (hot spot), the brightness of a side then can be darker than overall brightness farthest from light source at exiting surface, form a tangible blanking bar, cause the uneven problem of LGP bright dipping.
Summary of the invention
Given this, be necessary to provide a kind of emitting uniform LGP.
A kind of module backlight, it comprises a plurality of light emitting diodes and LGP.This LGP comprises incidence surface, exiting surface and bottom surface.Described light emitting diode is arranged on the incidence surface evenly and at intervals.Described incidence surface links to each other with exiting surface is vertical, and described bottom surface is oppositely arranged with described exiting surface and is connected with described incidence surface.The light of described light emitting diode emission by incidence surface enter LGP then by bottom reflection to exiting surface.Offer a plurality of piconet dot structures on the described bottom surface to the LGP inner recess.The contiguous incidence surface in upper edge, described bottom surface is to having divided a plurality of discontinuous network point distribution district successively away from the direction of incidence surface.In the nearest network point distribution district of the described incidence surface of distance, the degree of depth of the piconet dot structure that the described light emitting diode of distance is nearer is less and arrange thinlyyer, and the degree of depth of the piconet dot structure far away apart from light emitting diode is big and arrange closelyer.
With respect to prior art, module backlight provided by the present invention is by adopting the degree of depth and its design that is directly proportional apart from the light source distance of piconet dot structure, to reduce the brightness of the contiguous light emitting diode of described exiting surface position, improve of the brightness of described exiting surface simultaneously away from described light emitting diode position.Thereby eliminate close light source one side formed " bright spot " of exiting surface and exiting surface away from the blanking bar that light source one side occurs, make that the brightness that described exiting surface sent is more even.
Description of drawings
Fig. 1 is the structural representation of the module backlight that embodiment of the present invention provided.
Fig. 2 is the distribution schematic diagram of piconet dot structure on the bottom surface of LGP among Fig. 1.
The main element symbol description
LGP 10
Exiting surface 140
Piconet dot structure 160a
Network point distribution district 162,162A, 162B, 162C, 162D
Mixed light district 164
The specific embodiment
As depicted in figs. 1 and 2, the light source 11 that the module backlight 1 that embodiment of the present invention provided comprises LGP 10 and is positioned at LGP 10 1 sides.This LGP 10 comprises incidence surface 120, exiting surface 140 and bottom surface 160.In the present embodiment, described incidence surface 120 is oppositely arranged with described exiting surface 140 and is connected with described incidence surface 120 with 140 vertical linking to each other of exiting surface, described bottom surface 160.Described light source 11 is arranged on the incidence surface 120, so that the light of described light source 11 emissions enters in the LGP 10 via described incidence surface 120, is penetrated by described exiting surface 140 after 160 reflections of described bottom surface then.
In the present embodiment, described LGP 10 also is a rectangular flat.The material of described LGP 10 is a transparent material, for example: and plexiglass, methacrylic resin, polyacrylic resin, Merlon or polyvinyl resin etc., and adopt jetting formation process to make.The light emitting diode matrix that described light source 11 is formed for a plurality of light emitting diode, described light emitting diode are arranged on the described incidence surface 120 evenly and at intervals.
Offer a plurality of piconet dot structure 160a on the described bottom surface 160.Described piconet dot structure 160a is the circular pit to LGP 10 inner recess.Vertical range between the lowermost end of described circular pit and the described bottom surface 160 is defined as the degree of depth of described piconet dot structure 160a.In the present embodiment, the contiguous incidence surface 120 in 160 upper edges, described bottom surface comprises to divided four discontinuous network point distribution districts 162 successively away from the direction of incidence surface 120: 162A, 162B, 162C, 162D.Except the nearest network point distribution district 162A of the described incidence surface of distance, piconet dot structure 160a in other each network point distribution district 162B, 162C, the 162D is array and arranges, and the piconet dot structure 160a in the identical network point distribution district 162 is along identical with the degree of depth perpendicular to the arranging density on incidence surface 120 directions.Along perpendicular to arranging closelyer on incidence surface 120 directions, and the degree of depth is also bigger apart from the piconet dot structure 160a in the incidence surface 120 network point distribution district 162 far away.
Be provided with mixed light district 164 between every adjacent two network point distribution districts 162, promptly between network point distribution district 162A, the 162B, between network point distribution district 162B, the 162C, be respectively arranged with mixed light district 164 between network point distribution district 162C, the 162D.The degree of depth of piconet dot structure 160a in the described mixed light district 164 becomes big by the less network point distribution district 162 of the degree of depth gradually to the contiguous bigger network point distribution district 162 of the degree of depth.
In the nearest network point distribution district 162A of the described incidence surface of distance 120, the degree of depth of the piconet dot structure 160a that the described light emitting diode of distance is nearer is less and arrange thinlyyer, and the degree of depth of the piconet dot structure 160a far away apart from light emitting diode is big and arrange closelyer.
In one embodiment, the length L of described bottom surface 160 is 220mm, and width W is 130mm.On described bottom surface 160, divide the rectangle network point distribution district that 4 length are 130mm successively away from the direction of incidence surface 120: 162A, 162B, 162C, 162D from side edge near incidence surface 120.The width W 1 of described network point distribution district 162A is 30mm, and the width W 2 in described network point distribution district 162B, 162C, 162D district is 45mm.The degree of depth of piconet dot structure 160a in the described network point distribution district 162B is 2.5 μ m.The degree of depth of piconet dot structure 160a in the described network point distribution district 162C is 3.3 μ m.The degree of depth of piconet dot structure 160a in the described network point distribution district 162D is 3.5 μ m.Described network point distribution district 162A is nearest apart from incidence surface 120, and the degree of depth of the piconet dot structure 160a of network point distribution district 162A and density change in the scope between 2 μ m～2.5 μ m according to the distance of distance between itself and the light emitting diode.
Penetrate by described exiting surface 140 because the light that the piconet dot structure 160a that the degree of depth is big is more reflected is easy more, so described module backlight 1 adopts the degree of depth of piconet dot structure 160a can reduce the brightness of described exiting surface 140 contiguous light emitting diode positions with its design that is directly proportional apart from the light emitting diode distance, improve of the brightness of described exiting surface 140 simultaneously away from described light emitting diode position, to eliminate the blanking bar that exiting surface 140 close light source one sides formed " bright spot " and exiting surface 140 occur away from light source one side, the brightness that makes described exiting surface 140 be sent is more even.The degree of depth of piconet dot structure 160a in the described mixed light district 164 adopts the design that is gradually changed to darker network point distribution district 162 by adjacent more shallow network point distribution district 162, the light that makes the network point distribution district 162 of different depth be reflected can mix fully, thereby further improves the outgoing light homogeneity of whole LGP 10.
Those skilled in the art will be appreciated that; above embodiment only is to be used for illustrating the present invention; and be not to be used as limitation of the invention; as long as within connotation scope of the present invention, appropriate change and the variation that above embodiment did all dropped within the scope of protection of present invention.
Claims (6)
1. module backlight, it comprises a plurality of light emitting diodes and LGP, this LGP comprises incidence surface, exiting surface and bottom surface, described light emitting diode is arranged on the incidence surface evenly and at intervals, described incidence surface links to each other with exiting surface is vertical, described bottom surface is oppositely arranged with described exiting surface and is connected with described incidence surface, the light of described light emitting diode emission by incidence surface enter LGP then by bottom reflection to exiting surface, offer a plurality of piconet dot structures on the described bottom surface to the LGP inner recess, it is characterized in that: the contiguous incidence surface in upper edge, described bottom surface is to having divided a plurality of discontinuous network point distribution district successively away from the direction of incidence surface, in the nearest network point distribution district of the described incidence surface of distance, the degree of depth of the piconet dot structure that the described light emitting diode of distance is nearer is less and arrange thinlyyer, and the degree of depth of the piconet dot structure far away apart from light emitting diode is big and arrange closelyer.
2. module backlight as claimed in claim 1, it is characterized in that: except the nearest network point distribution district of the described incidence surface of distance, piconet dot structure in other each network point distribution districts is array and arranges, piconet dot structure in the identical network point distribution district is along identical with the degree of depth perpendicular to the arranging density on the incidence surface direction, apart from the piconet dot structure in the incidence surface network point distribution district far away along perpendicular to arranging closelyer on the incidence surface direction.
3. module backlight as claimed in claim 2 is characterized in that: except the nearest network point distribution district of the described incidence surface of distance, bigger apart from the degree of depth of the piconet dot structure in the incidence surface network point distribution district far away.
4. module backlight as claimed in claim 3, it is characterized in that: the number in described network point distribution district is 4, and network point distribution district to the degree of depth apart from the piconet dot structure in the incidence surface network point distribution district farthest that ranked second with the distance of incidence surface is followed successively by: 2.5 μ m, 3.3 μ m, 3.5 μ m.
5. module backlight as claimed in claim 4, it is characterized in that: in the nearest network point distribution district of the described incidence surface of distance, the degree of depth of described piconet dot structure lies in the scope between 2 μ m～2.5 μ m according to the pass that is directly proportional of distance between piconet dot structure and the light emitting diode and changes.
6. module backlight as claimed in claim 2, it is characterized in that: be provided with the mixed light district between every adjacent two network point distribution districts, the degree of depth of the piconet dot structure in the described mixed light district becomes big by the less network point distribution district of the degree of depth gradually to the bigger network point distribution district of the adjacent degree of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186005.XA CN102261575B (en) | 2010-05-28 | 2010-05-28 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010186005.XA CN102261575B (en) | 2010-05-28 | 2010-05-28 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102261575A true CN102261575A (en) | 2011-11-30 |
| CN102261575B CN102261575B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010186005.XA Expired - Fee Related CN102261575B (en) | 2010-05-28 | 2010-05-28 | Backlight module |
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| CN (1) | CN102261575B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511980A (en) * | 2013-09-13 | 2014-01-15 | 南京高一智光电有限公司 | Light guide plate |
| CN104344239A (en) * | 2013-07-30 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode tube |
| CN104570192A (en) * | 2013-10-25 | 2015-04-29 | 苏州璨宇光学有限公司 | Light guide plate and fabricating method thereof |
| CN104880756A (en) * | 2014-02-27 | 2015-09-02 | 苏州璨宇光学有限公司 | Light guide plate and backlight module |
| CN105223719A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华星光电技术有限公司 | Double-sided liquid crystal display device and electronic equipment |
| CN107608019A (en) * | 2017-09-28 | 2018-01-19 | 深圳Tcl新技术有限公司 | Light guide plate and its hot-press equipment, backlight module and display device |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN110609417A (en) * | 2019-09-23 | 2019-12-24 | 京东方科技集团股份有限公司 | Lamp panel and manufacturing method thereof, backlight source and display device |
| CN111565601A (en) * | 2018-01-10 | 2020-08-21 | 皇家飞利浦有限公司 | Light guide unit |
| CN115857228A (en) * | 2023-02-27 | 2023-03-28 | 合肥泰沃达智能装备有限公司 | Side-in miniLED (light-emitting diode) zone-controlled backlight module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132609A (en) * | 2017-06-16 | 2017-09-05 | 苏州亿光源光电科技有限公司 | local dimming light guide plate |
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| JP2001124928A (en) * | 1999-10-29 | 2001-05-11 | Nippon Leiz Co Ltd | Light transmission plate and planar lighting system |
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2010
- 2010-05-28 CN CN201010186005.XA patent/CN102261575B/en not_active Expired - Fee Related
Patent Citations (6)
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| JP2001124928A (en) * | 1999-10-29 | 2001-05-11 | Nippon Leiz Co Ltd | Light transmission plate and planar lighting system |
| CN2588387Y (en) * | 2002-12-13 | 2003-11-26 | 鸿富锦精密工业（深圳）有限公司 | Light conducting board and plane illumination device |
| CN1510439A (en) * | 2002-12-21 | 2004-07-07 | 鸿富锦精密工业（深圳）有限公司 | Light conducting board and background module set |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344239A (en) * | 2013-07-30 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode tube |
| CN103511980A (en) * | 2013-09-13 | 2014-01-15 | 南京高一智光电有限公司 | Light guide plate |
| CN104570192A (en) * | 2013-10-25 | 2015-04-29 | 苏州璨宇光学有限公司 | Light guide plate and fabricating method thereof |
| CN104880756B (en) * | 2014-02-27 | 2018-04-27 | 苏州璨宇光学有限公司 | Light guide plate and backlight module |
| CN104880756A (en) * | 2014-02-27 | 2015-09-02 | 苏州璨宇光学有限公司 | Light guide plate and backlight module |
| CN105223719A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华星光电技术有限公司 | Double-sided liquid crystal display device and electronic equipment |
| CN107608019A (en) * | 2017-09-28 | 2018-01-19 | 深圳Tcl新技术有限公司 | Light guide plate and its hot-press equipment, backlight module and display device |
| CN107608019B (en) * | 2017-09-28 | 2020-07-10 | 深圳Tcl新技术有限公司 | Light guide plate, hot pressing equipment thereof, backlight module and display device |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN111565601A (en) * | 2018-01-10 | 2020-08-21 | 皇家飞利浦有限公司 | Light guide unit |
| CN110609417A (en) * | 2019-09-23 | 2019-12-24 | 京东方科技集团股份有限公司 | Lamp panel and manufacturing method thereof, backlight source and display device |
| CN110609417B (en) * | 2019-09-23 | 2022-07-08 | 京东方科技集团股份有限公司 | Lamp panel and manufacturing method thereof, backlight source and display device |
| CN115857228A (en) * | 2023-02-27 | 2023-03-28 | 合肥泰沃达智能装备有限公司 | Side-in miniLED (light-emitting diode) zone-controlled backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102261575B (en) | 2014-07-16 |
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Granted publication date: 20140716 Termination date: 20190528 |