CN102261575B - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN102261575B CN102261575B CN201010186005.XA CN201010186005A CN102261575B CN 102261575 B CN102261575 B CN 102261575B CN 201010186005 A CN201010186005 A CN 201010186005A CN 102261575 B CN102261575 B CN 102261575B
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- point distribution
- network point
- incidence surface
- piconet
- light
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- 238000007598 dipping method Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction 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 backlight module, particularly a kind of backlight module that can uniformly light-emitting.
Background technology
Existing backlight module generally includes a LGP and is arranged on the light source of LGP one side.Described LGP comprises an incidence surface, an exiting surface being connected with described incidence surface and the bottom surface being oppositely arranged with described exiting surface.On described bottom surface by arrange miniature site so that light reflection is derived by described exiting surface to exiting 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 away from a side of light source.But, existing backlight module uses light emitting diode as light source more and more, and the emitting brightness of respective leds position can be bright in other positions significantly on described exiting surface, thereby form multiple significantly " bright spot " (hot spot) at exiting surface near a side of light source, at exiting surface, from light source, the brightness of a side can be darker than overall brightness farthest, form an obvious blanking bar, cause the inhomogeneous problem of LGP bright dipping.
Summary of the invention
Given this, be necessary to provide a kind of bright dipping uniform LGP.
A kind of backlight module, it comprises multiple light emitting diodes and LGP.This LGP comprises incidence surface, exiting surface and bottom surface.Described light emitting diode is arranged on incidence surface evenly and at intervals.Described incidence surface is connected 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 transmitting by incidence surface enter LGP then by bottom reflection to exiting surface.On described bottom surface, offer multiple piconet dot structures to LGP inner recess.On described bottom surface, extremely divide successively multiple discontinuous network point distribution district away from the direction of incidence surface along contiguous incidence surface.In the nearest network point distribution district of the described incidence surface of distance, the degree of depth of the nearer piconet dot structure of the described light emitting diode of distance is less and arrange thinlyyer, the degree of depth of the piconet dot structure far away apart from light emitting diode is large and arrange closelyer, 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 identical network point distribution district is along identical with the degree of depth perpendicular to the arranging density in incidence surface direction.Apart from piconet dot structure in incidence surface network point distribution district far away along perpendicular to arranging closelyer in incidence surface direction.Every adjacent Liang Ge network point distribution is provided with mixed light district between district.The degree of depth of the piconet dot structure in described mixed light district becomes large by the less network point distribution district of the degree of depth gradually to the larger network point distribution district of the adjacent degree of depth.
With respect to prior art, backlight module provided by the present invention is by adopting the degree of depth and its design being directly proportional apart from light source distance of piconet dot structure, to reduce the brightness of the contiguous light emitting diode of described exiting surface position, improve the brightness of described exiting surface away from described light emitting diode position simultaneously.The blanking bar that " bright spot " that thereby elimination exiting surface forms near light source one side and exiting surface occur away from light source one side, the brightness that described exiting surface is sent is more even.
Brief description of the drawings
The structural representation of the backlight module that Fig. 1 provides for embodiment of the present invention.
Fig. 2 is the distribution schematic diagram of piconet dot structure on the bottom surface of LGP in Fig. 1.
Main element symbol description
Backlight module 1
LGP 10
Light source 11
Incidence surface 120
Exiting surface 140
Bottom surface 160
Piconet dot structure 160a
Network point distribution district 162,162A, 162B, 162C, 162D
Mixed light district 164
Detailed description of the invention
As depicted in figs. 1 and 2, the backlight module 1 that embodiment of the present invention provides comprises LGP 10 and is positioned at the light source 11 of LGP 10 1 sides.This LGP 10 comprises incidence surface 120, exiting surface 140 and bottom surface 160.In present embodiment, described incidence surface 120 is connected with exiting surface 140 is vertical, and described bottom surface 160 is oppositely arranged with described exiting surface 140 and is connected with described incidence surface 120.Described light source 11 is arranged on incidence surface 120, so that the light that described light source 11 is launched is entered in LGP 10 via described incidence surface 120, then after 160 reflections of described bottom surface, is penetrated by described exiting surface 140.
In present embodiment, described LGP 10 is also rectangular flat.The material of described LGP 10 is 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 forms for multiple light emitting diodes, described light emitting diode is arranged on described incidence surface 120 evenly and at intervals.
On described bottom surface 160, offer multiple piconet dot structure 160a.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 described bottom surface 160 is defined as the degree of depth of described piconet dot structure 160a.In present embodiment, on described bottom surface 160, divide successively four discontinuous network point distribution districts 162 along contiguous incidence surface 120 to the direction away from incidence surface 120 and comprised: 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, 162D is array and arranges, and the piconet dot structure 160a in identical network point distribution district 162 is along identical with the degree of depth perpendicular to the arranging density in incidence surface 120 directions.Apart from piconet dot structure 160a in incidence surface 120 network point distribution district 162 far away, along perpendicular to arranging closelyer in incidence surface 120 directions, and the degree of depth is also larger.
Between network point distribution district 162A, 162B, between network point distribution district 162B, 162C, be respectively arranged with mixed light district 164 between network point distribution district 162C, 162D between every adjacent Liang Ge network point distribution district 162, be provided with mixed light district 164.The degree of depth of piconet dot structure 160a in described mixed light district 164 becomes large by the less network point distribution district 162 of the degree of depth gradually to the contiguous larger network point distribution district 162 of the degree of depth.
In the nearest network point distribution district 162A of the described incidence surface 120 of distance, the degree of depth of the nearer piconet dot structure 160a of the described light emitting diode of distance is less and arrange thinlyyer, and the degree of depth of the piconet dot structure 160a far away apart from light emitting diode is large 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 near a side of incidence surface 120 along the distributed area, rectangle site of dividing successively 4 length away from the direction of incidence surface 120 and be 130mm: 162A, 162B, 162C, 162D.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 described network point distribution district 162B is 2.5 μ m.The degree of depth of piconet dot structure 160a in described network point distribution district 162C is 3.3 μ m.The degree of depth of piconet dot structure 160a in 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, according to the distance of distance between itself and light emitting diode, change in the scope between 2 μ m～2.5 μ m.
Because the light that the piconet dot structure 160a that the degree of depth is larger reflects is more easily penetrated by described exiting surface 140, so described backlight module 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 to its design being directly proportional apart from light emitting diode distance, improve the brightness of described exiting surface 140 away from described light emitting diode position simultaneously, the blanking bar that " bright spot " being formed near light source one side with elimination exiting surface 140 and exiting surface 140 occur away from light source one side, the brightness that described exiting surface 140 is sent is more even.The degree of depth of piconet dot structure 160a in described mixed light district 164 adopts the design being gradually changed to darker network point distribution district 162 by adjacent more shallow network point distribution district 162, the light that the network point distribution district 162 of different depth is 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 is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (4)
1. a backlight module, it comprises multiple light emitting diodes and LGP, this LGP comprises incidence surface, exiting surface and bottom surface, described light emitting diode is arranged on incidence surface evenly and at intervals, described incidence surface is connected 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 transmitting by incidence surface enter LGP then by bottom reflection to exiting surface, on described bottom surface, offer multiple piconet dot structures to LGP inner recess, it is characterized in that: on described bottom surface, extremely divided successively multiple discontinuous network point distribution district away from the direction of incidence surface along contiguous incidence surface, in the nearest network point distribution district of the described incidence surface of distance, the degree of depth of the nearer piconet dot structure of the described light emitting diode of distance is less and arrange thinlyyer, the degree of depth of the piconet dot structure far away apart from light emitting diode is large and arrange closelyer, 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 identical network point distribution district is along identical with the degree of depth perpendicular to the arranging density in incidence surface direction, apart from piconet dot structure in incidence surface network point distribution district far away along perpendicular to arranging closelyer in incidence surface direction, every adjacent Liang Ge network point distribution is provided with mixed light district between district, the degree of depth of the piconet dot structure in described mixed light district becomes large by the less network point distribution district of the degree of depth gradually to the larger network point distribution district of the adjacent degree of depth.
2. backlight module as claimed in claim 1, is characterized in that: except the nearest network point distribution district of the described incidence surface of distance, larger apart from the degree of depth of the piconet dot structure in incidence surface network point distribution district far away.
3. backlight module as claimed in claim 2, it is characterized in that: the number in described network point distribution district is 4, the network point distribution district ranked second with the distance of incidence surface is extremely followed successively by apart from the degree of depth of the piconet dot structure in incidence surface network point distribution district farthest: 2.5 μ m, 3.3 μ m, 3.5 μ m.
4. backlight module as claimed in claim 3, 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 and changes according to the pass being directly proportional of distance between piconet dot structure and light emitting diode.
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 CN102261575A (en) | 2011-11-30 |
| CN102261575B true CN102261575B (en) | 2014-07-16 |
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Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN102261575B (en) |
Cited By (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 |
Families Citing this family (10)
| 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 |
| 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 |
| 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 |
| JP7097450B2 (en) * | 2018-01-10 | 2022-07-07 | コーニンクレッカ フィリップス エヌ ヴェ | Optical guide unit |
| 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 |
| CN115857228B (en) * | 2023-02-27 | 2023-05-09 | 合肥泰沃达智能装备有限公司 | Backlight module with side-in type miniLED partition control function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1786745A (en) * | 2004-12-11 | 2006-06-14 | 群康科技(深圳)有限公司 | Method for mfg, ligth conducting plate |
| CN200965575Y (en) * | 2006-10-25 | 2007-10-24 | 毅嘉科技股份有限公司 | Light guide plate and key module using this light guide plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4239700B2 (en) * | 2003-06-17 | 2009-03-18 | オムロン株式会社 | Surface light source device and equipment using the surface light source device |
-
2010
- 2010-05-28 CN CN201010186005.XA patent/CN102261575B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1786745A (en) * | 2004-12-11 | 2006-06-14 | 群康科技(深圳)有限公司 | Method for mfg, ligth conducting plate |
| CN200965575Y (en) * | 2006-10-25 | 2007-10-24 | 毅嘉科技股份有限公司 | Light guide plate and key module using this light guide plate |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-124928A 2001.05.11 |
| JP特开2005-11599A 2005.01.13 |
Cited By (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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| Publication number | Publication date |
|---|---|
| CN102261575A (en) | 2011-11-30 |
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Owner name: SHENZHEN QICHUANGMEI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY (SHENZHEN) CO., LTD. Effective date: 20150813 Free format text: FORMER OWNER: HONGFUJIN PRECISE INDUSTRY CO., LTD. Effective date: 20150813 |
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Effective date of registration: 20150813 Address after: 518000 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan nine road Haisong building B block 1205 Patentee after: Shenzhen Qichuangmei Technology Co., Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Patentee before: Hon Hai Precision Industry Co., Ltd. |
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Owner name: SHENZHEN KELIMENG ELECTRONIC CO., LTD. Free format text: FORMER OWNER: SHENZHEN QICHUANGMEI TECHNOLOGY CO., LTD. Effective date: 20150820 |
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Effective date of registration: 20150820 Address after: 518100 Guangdong city of Shenzhen province Baoan District Shiyan Street Community Hongfa stone new Jia Terry hi tech Park hung down the original high-tech Industrial Park No. 4 Building 4 building four floor West Patentee after: SHENZHEN KELIMENG ELECTRONICS CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Futian District Che Kung Temple Tairan nine road Haisong building B block 1205 Patentee before: Shenzhen Qichuangmei Technology Co., Ltd. |
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Effective date of registration: 20171201 Address after: Guangdong province Dongguan City Chashan town 523000 Zengbu village Dongcheng Huimei Technology Park A Building 2 floor C-2 Patentee after: Dongguan East power fly Electronics Co. Ltd. Address before: 518100 Guangdong city of Shenzhen province Baoan District Shiyan Street Community Hongfa stone new Jia Terry hi tech Park hung down the original high-tech Industrial Park No. 4 Building 4 building four floor West Patentee before: SHENZHEN KELIMENG ELECTRONICS CO., LTD. |
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Granted publication date: 20140716 Termination date: 20190528 |