CN103775903A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN103775903A CN103775903A CN201210399508.4A CN201210399508A CN103775903A CN 103775903 A CN103775903 A CN 103775903A CN 201210399508 A CN201210399508 A CN 201210399508A CN 103775903 A CN103775903 A CN 103775903A
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- CN
- China
- Prior art keywords
- light source
- backlight module
- loading end
- source cover
- bearing surface
- 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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Abstract
The invention relates to a backlight module which comprises a bearing plate, a light source and a hollow light source cover. The bearing plate comprises a bearing surface. The light source is arranged on the bearing surface. The light source cover covers the light source and is located on the bearing surface. The light source cover comprises a circular-ring-shaped bottom and a circular top, wherein the bottom is in contact with the bearing surface, while the top directly faces the bearing surface, and a hemispherical reflection part is arranged on the surface, facing the bearing surface, of the top. The light source is arranged to directly face the reflection part, and the spherical surface of the reflection part is close to the light source. A plurality of through holes are formed in the light source cover, and arranged in a plurality of circular rings, a plurality of through holes in each circular ring are arranged at equal intervals, and the centers of the plurality of circular rings and the center of sphere of the reflection part are located in the same straight line which is perpendicular to the bearing surface. The diameters of the through holes in the plurality of circular rings are gradually increased in a direction from the top to the bottom. The backlight module effectively increases the light divergence angle of the light source, has high light emission uniformity, and is quite simple in structure, easy to process and capable of effectively improving the production efficiency.
Description
Technical field
The present invention relates to backlight module, relate in particular to a kind of backlight module of straight-down negative.
Background technology
Current backlight module generally comprises multiple light sources and a LGP.In order to make the bright dipping of backlight module even, on the general incidence surface at LGP and exiting surface, multiple micro-structurals are set.But present micro-structural more complicated, processes more difficultly, and therefore production efficiency is lower.
Summary of the invention
In view of this, be necessary the backlight module that provides a kind of production efficiency higher.
A kind of backlight module, it comprises a loading plate, a light source and a hollow light source cover.This loading plate comprises a loading end.This light source is arranged on this loading end.This light source cover is located on this light source and is positioned on this loading end.This light source cover comprises bottom and the circular top of annular.This bottom contacts with this loading end.This top is just to this loading end, and this top surface arranges a hemispheric reflecting part on the surface of this loading end.This light source just arranges this reflecting part, and the sphere of this reflecting part is near this light source.On this light source cover, offer multiple through holes.The plurality of arrays of openings becomes multiple annulus.Multiple through hole spaced sets in each annulus.The center of circle of the plurality of annulus and the centre of sphere of this reflecting part are positioned on the straight line of same perpendicular to this loading end.From this top, in the direction of this bottom, the aperture of this through hole in the plurality of annulus increases gradually.
Compared with prior art, backlight module of the present invention, has effectively increased the divergence of beam angle of light source, therefore has higher light-emitting uniformity.And due to relatively simple for structure, be easy to processing, can effectively enhance productivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the backlight module of preferred embodiments of the present invention.
Fig. 2 is the decomposing schematic representation of the backlight module of Fig. 1.
Fig. 3 is the cutaway view of the backlight module of Fig. 1.
Fig. 4 is the schematic diagram of another angle of the light source cover of the backlight module of Fig. 1.
Main element symbol description
| |
100 |
| |
10 |
| Loading |
11 |
| The first reflectance coating | 101 |
| |
30 |
| Exiting |
31 |
| |
50 |
| |
51 |
| Top | 53 |
| Reflecting part | 55 |
| |
550 |
| Through |
501 |
| |
502 |
| The second reflectance coating | 504 |
| Inwall | 56 |
The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
The specific embodiment
Referring to Fig. 1 and Fig. 2, is a kind of backlight module 100 that embodiment of the present invention provides, and it comprises a loading plate 10, light source 30 and a hollow light source cover 50.
Shown in Fig. 3, this loading plate 10 is plate-like structure, and comprises a loading end 11.This loading plate 10 is made up of lighttight material, and the region being covered by this light source cover 50 on this loading end 11 is coated with the first reflectance coating 101.
This light source 30 is arranged on this loading end 11, and this light source 30 comprises an exiting surface 31.In the present embodiment, this light source 30 is a light emitting diode (Light Emitting Diode, LED).
Shown in Fig. 4, this light source cover 50 is made up of lighttight material, and is located on this light source 30.This exiting surface 31 is towards this light source cover 50.This light source cover 50 is hemispherical, and comprises bottom 51 and the circular top 53 of annular.This bottom 51 contacts with this loading end 11.This top 53 is just to this loading end 11.This top 53 is towards the reflecting part 55 that a spherical crown shape is set on the surface of this loading end 11.This reflecting part 55 is made up of highly reflective material.This light source 30 just arranges this reflecting part 55, and the sphere 550 of this reflecting part 55 arranges near this light source 30.On this light source cover 50, offer multiple through holes 501.The plurality of through hole 501 is arranged in multiple annulus 502.Multiple through holes 501 spaced sets in each annulus 502.The centre of sphere of the center of circle of the plurality of annulus 502 and this reflecting part 55 is positioned on the straight line of same perpendicular to this loading end 11.From this top 53, in the direction of this bottom 51, the aperture of this through hole 501 in the plurality of annulus 502 increases gradually.In the present embodiment, on the inwall 56 of this light source cover 50, be coated with the second reflectance coating 504, so that most light can be reflected by this second reflectance coating 504, to penetrate from the plurality of through hole 501, to increase the amount of light of this backlight module 100.
In the present embodiment, the radius of this reflecting part 55 is 5 millimeters, and the radius of this bottom 51 is 30 millimeters, and this top 53 is 10 millimeters to the vertical range of this loading end 11.
The course of work of this backlight module 100 is as follows: this light source 30 is launched light, and this light is from the interior ejaculation of the plurality of through hole 501, thereby obtains an area source that exiting surface is larger.The light of launching due to this light source 30 is divergent shape, therefore, the ray density maximum of mid portion, the ray density of marginal portion is smaller.From this top 53, in the direction of this bottom 51, the aperture of the through hole 501 in the plurality of annulus 502 increases gradually, makes near the amount of light of this through hole 501 of this bottom 51 greatlyr, and the amount of light of this through hole 501 of close this bottom 51 is less.Simultaneously, the light reflection of the mid portion that this reflecting part 55 can send this light source 30 is to from all directions, make the light of the mid portion that this light source 30 sends can be from the interior ejaculation of this through hole 501 near this bottom 51, further to increase the amount of light near this bottom 51, make the density ratio of the light that this backlight module 100 penetrates more even.
Compared with prior art, backlight module 100 of the present invention, has effectively increased the divergence of beam angle of light source, therefore has higher light-emitting uniformity.And due to relatively simple for structure, be easy to processing, can effectively enhance productivity.
In other embodiments, also can on this loading end 11, all be coated with the first reflectance coating 101.
In the present embodiment, this second reflectance coating 504 is identical with the material of this first reflectance coating 101.In other embodiments, this second reflectance coating 504 also can be different from the material of this first reflectance coating 101.
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 the claims in the present invention with distortion.
Claims (9)
1. a backlight module, it comprises a loading plate, a light source and a hollow light source cover, this loading plate comprises a loading end, this light source is positioned on this loading end, this light source cover is located on this light source and is positioned on this loading end, and this light source cover comprises bottom and the circular top of annular; This bottom contacts with this loading end; This top is just to this loading end, and this top surface arranges a hemispheric reflecting part on the surface of this loading end; This light source just arranges this reflecting part, and the sphere of this reflecting part is near this light source; On this light source cover, offer multiple through holes; The plurality of arrays of openings becomes multiple annulus; Multiple through hole spaced sets in each annulus; The center of circle of the plurality of annulus and the centre of sphere of this reflecting part are positioned on the straight line of same perpendicular to this loading end; From this top, in the direction of this bottom, the aperture of this through hole in the plurality of annulus increases gradually.
2. backlight module as claimed in claim 1, is characterized in that, this loading plate is plate-like structure, and is made up of lighttight material; The exiting surface of this light source is towards this light source cover.
3. backlight module as claimed in claim 2, is characterized in that, the region being covered by this light source cover on this loading end is coated with one deck the first reflectance coating.
4. backlight module as claimed in claim 1, is characterized in that, is all coated with one deck the first reflectance coating on this loading end.
5. backlight module as claimed in claim 1, is characterized in that, this light source cover is made up of lighttight material.
6. the backlight module as described in claim 3 or 4, is characterized in that, is coated with one deck the second reflectance coating on the inwall of this light source cover.
7. backlight module as claimed in claim 6, is characterized in that, this first reflectance coating is identical with the material of this second reflectance coating.
8. backlight module as claimed in claim 1, is characterized in that, this reflecting part is made up of highly reflective material.
9. backlight module as claimed in claim 1, is characterized in that, this light source is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399508.4A CN103775903B (en) | 2012-10-19 | 2012-10-19 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399508.4A CN103775903B (en) | 2012-10-19 | 2012-10-19 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775903A true CN103775903A (en) | 2014-05-07 |
| CN103775903B CN103775903B (en) | 2017-07-18 |
Family
ID=50568466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210399508.4A Expired - Fee Related CN103775903B (en) | 2012-10-19 | 2012-10-19 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103775903B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9804444B2 (en) | 2015-12-11 | 2017-10-31 | Au Optronics Corporation | Light source module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2278214A1 (en) * | 2009-07-23 | 2011-01-26 | LG Innotek Co., Ltd. | Light emitting device |
| US20110069496A1 (en) * | 2009-09-18 | 2011-03-24 | Luxingtek, Ltd. | Lighting device, light spreading plate and method for manufacturing the same |
| CN202091993U (en) * | 2011-05-19 | 2011-12-28 | 山东科技大学 | Lampshade |
| CN202118796U (en) * | 2011-06-08 | 2012-01-18 | 南宁市立节节能电器有限公司 | High-condensed high-intensity LED lamp |
-
2012
- 2012-10-19 CN CN201210399508.4A patent/CN103775903B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2278214A1 (en) * | 2009-07-23 | 2011-01-26 | LG Innotek Co., Ltd. | Light emitting device |
| US20110069496A1 (en) * | 2009-09-18 | 2011-03-24 | Luxingtek, Ltd. | Lighting device, light spreading plate and method for manufacturing the same |
| CN202091993U (en) * | 2011-05-19 | 2011-12-28 | 山东科技大学 | Lampshade |
| CN202118796U (en) * | 2011-06-08 | 2012-01-18 | 南宁市立节节能电器有限公司 | High-condensed high-intensity LED lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9804444B2 (en) | 2015-12-11 | 2017-10-31 | Au Optronics Corporation | Light source module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103775903B (en) | 2017-07-18 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170527 Address after: Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 Termination date: 20171019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |