CN103644479B - A kind of Parallel-plane backlight source - Google Patents
A kind of Parallel-plane backlight source Download PDFInfo
- Publication number
- CN103644479B CN103644479B CN201310715503.2A CN201310715503A CN103644479B CN 103644479 B CN103644479 B CN 103644479B CN 201310715503 A CN201310715503 A CN 201310715503A CN 103644479 B CN103644479 B CN 103644479B
- Authority
- CN
- China
- Prior art keywords
- light
- layer
- guiding film
- light guiding
- parallel
- 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.)
- Active
Links
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to LED light source equipment technical field; refer in particular to a kind of Parallel-plane backlight source; comprise shell and be fixed on the pcb board in shell; this pcb board is pasted with LED; the top of this shell is hatch frame; this opening part is disposed with diffusing panel, light guiding film and protection pressing plate from the inside to surface, and described light guiding film is two-layer, and this two-layer light guiding film mutually superposes and is sticked to form double-layer staggered light guiding film.Diffusing panel Main Function is that the light sent by LED is converted to uniform diffusing surface light, and after diffusing panel, light source converts diffused light to, and whole breadth uniformity can reach more than 95%.Parallel-plane backlight source of the present invention is plane parallel light source, and compared with common plane light source, it emits beam in direction set, less parallel light; Compared with other kind directional lights, global shape is simple, size is little, is flat, highly little, is convenient to install, and saves space, and it is larger that light-emitting area is also easy to do, and practicality is stronger.
Description
Technical field
The present invention relates to LED light source equipment technical field, refer in particular to a kind of Parallel-plane backlight source.
Background technology
As light source, such as LCD backlight, planar light emitting device is used, and it is from the spot light utilizing emitted light of the light emitting diode of such as flat shape.Planar light emitting device is constructed to that the light from least one light emitting diode is entered and has an end surfaces of the light guide plate of the position in the face of first type surface, and launches the light on the whole surface from the first type surface of light guide plate.
As such planar light emitting device, such as JP2007-311327A discloses a kind of planar light source device, and it comprises multiple spot light; The guide plate from the incident light modulation of spot light is launched from emitting surface to a side surface; There is the lower part box of the side surface substantially formed abreast with the incidence surface of light guide plate; With light source bottom, multiple spot light is placed thereon at predetermined intervals, and it is positioned at the side of the incidence surface of light guide plate, wherein, base layer support component is provided as adopting the side surface being placed on nipple support light source bottom between two spot lights and lower part box.
Above-mentioned planar light emitting device because build is large, complex structure, assembly difficulty are higher, and direction of illumination not evenly to cause light source to change into the uniformity of diffused light lower, defect is obvious.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of structure is simple, take up room little, convenient installation, and releases radiation direction and concentrate, a kind of Parallel-plane backlight source of less parallel light.
In order to solve the problems of the technologies described above; the present invention adopts following technical scheme: a kind of Parallel-plane backlight source; comprise shell and be fixed on the pcb board in shell; this pcb board is pasted with LED; the top of this shell is hatch frame; this opening part is disposed with diffusing panel, light guiding film and protection pressing plate from the inside to surface, and described light guiding film is two-layer, and this two-layer light guiding film mutually superposes and is sticked to form double-layer staggered light guiding film.
Wherein, it is 90 ° that described two-layer light guiding film superposes staggered angle mutually, composition Orthogonal Double-layer light guide member layer.
Wherein, described light guiding film comprises bed course, basal layer and patterned layer, and described basal layer is that polyester film is made, and described patterned layer is that acrylic resin is made.
Wherein, described protection pressing plate is the proofing dust and protecting cover sheet being coated with anti-reflection film.
Wherein, described basal layer and patterned layer thickness add up to 60 ~ 70 microns.
Wherein, the thickness of described basal layer is 45 ~ 55 microns.
Wherein, the patterned layer of described light guiding film is provided with the prism of multiple projection.
Wherein, the spacing between adjacent two described prisms is 20 ~ 30 microns.
Wherein, the prism angle of described prism is 90 degree.
Beneficial effect of the present invention is: the invention provides a kind of Parallel-plane backlight source, wherein diffusing panel Main Function is that the light sent by LED is converted to uniform diffusing surface light, the light sent due to LED has certain distribution characteristics, in whole light-emitting area, Luminance Distribution direction of illumination is all uneven, after diffusing panel, light source converts diffused light to, and whole breadth uniformity can reach more than 95%.
Parallel-plane backlight source of the present invention is plane parallel light source, and compared with common plane light source, it emits beam in direction set, less parallel light; Compared with other kind directional lights, global shape is simple, size is little, is flat, highly little, is convenient to install, and saves space, and it is larger that light-emitting area is also easy to do, and practicality is stronger.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is stereochemical structure decomposing schematic representation of the present invention.
Fig. 3 is the partial enlargement structural representation of light guiding film of the present invention.
Fig. 4 is the paths schematic diagram that light passes light guiding film.
Fig. 5 is the structural representation that the two-layer light guiding film of the present invention superposes Orthogonal Double-layer light guide member layer when staggered angle is 90 ° mutually.
Fig. 6 be the present invention hide diffusing panel, light guiding film and protection pressing plate time plan structure schematic diagram.
Fig. 7 is the cross-sectional view of A-A in Fig. 6.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
As shown in Figures 1 to 6; a kind of Parallel-plane backlight source; comprise shell 1 and be fixed on the pcb board 2 in shell 1; this pcb board 2 is pasted with LED3; the top of this shell 1 is hatch frame; this opening part is disposed with diffusing panel 4, light guiding film 5 and protection pressing plate 6 from the inside to surface, and described light guiding film 5 is two-layer, and this two-layer light guiding film 5 mutually superposition is sticked to form double-layer staggered light guiding film.
Diffusing panel 4 Main Function is that the light sent by LED3 is converted to uniform diffusing surface light, the light sent due to LED3 has certain distribution characteristics, in whole light-emitting area, Luminance Distribution direction of illumination is all uneven, after diffusing panel 4, light source converts diffused light to, and whole breadth uniformity can reach more than 95%, then through twice conversion of two-layer light guiding film 5, it emits beam in direction set, less parallel light.
Parallel-plane backlight source of the present invention is plane parallel light source, and compared with other kind directional lights, global shape is simple, size is little, is flat, highly little, is convenient to install, and saves space, and it is larger that light-emitting area is also easy to do.
In the present embodiment, described two-layer light guiding film 5 angle that superposition is staggered is mutually 90 °, and composition Orthogonal Double-layer light guide member layer, compared with common plane light source, its direction that emits beam is more concentrated, more less parallel light, and practicality is stronger
See Fig. 3, the described light guiding film 5 of the present embodiment comprises bed course 51, basal layer 52 and patterned layer 53, described basal layer 52 is made for polyester film, described patterned layer 53 is made for acrylic resin, described basal layer 52 and patterned layer 53 thickness add up to 60 ~ 70 microns, the thickness of described basal layer 52 is 45 ~ 55 microns, and the patterned layer 53 of described light guiding film 5 is provided with the prism 54 of multiple projection.
Preferably, see Fig. 3, the thickness of described basal layer 52 is 52 microns, and described basal layer 52 and patterned layer 53 thickness add up to 65 microns, and the spacing between adjacent two described prisms 54 is 26 microns, and the prism angle α of described prism 54 is 90 degree.。Preferably diffused light direction can not only be converged, concentrate vertically in light source luminescent face; In addition, when backlight have accurately spacing, angle, thickness and reflectance, circulation with diffusion utilize its light source to reach the effect increasing brightness, the efficiency of light energy utilization is higher.
The described protection pressing plate 6 of the present embodiment is for being coated with the proofing dust and protecting cover sheet of anti-reflection film; can not only effectively prevent the foreign material such as external dust from entering in shell 1; ensure that diffusing panel 4 and light guiding film 5 have higher cleannes; the light transmittance of protection pressing plate 6 can also be improved, improve the efficiency of light energy utilization further.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and under the prerequisite not departing from the technical program design, any apparent replacement is all within protection scope of the present invention.
Claims (1)
1. a Parallel-plane backlight source, comprise shell (1) and be fixed on the pcb board (2) in shell (1), (2) are pasted with LED(3 to this pcb board), the top of this shell (1) is hatch frame, this opening part is disposed with diffusing panel (4), light guiding film (5) and protection pressing plate (6) from the inside to surface, it is characterized in that: described light guiding film (5) is for two-layer, and this two-layer light guiding film (5) is the double-layer staggered light guiding film of superposition composition mutually;
Described light guiding film (5) comprises bed course (51), basal layer (52) and patterned layer (53), and described basal layer (52) is made for polyester film, and described patterned layer (53) is made for acrylic resin;
Described protection pressing plate (6) is for being coated with the proofing dust and protecting cover sheet of anti-reflection film;
The thickness of described basal layer (52) and patterned layer (53) adds up to 60 ~ 70 microns;
The thickness of described basal layer (52) is 45 ~ 55 microns;
The patterned layer (53) of described light guiding film (5) is provided with the prism (54) of multiple projection;
Spacing between adjacent two described prisms (54) is 20 ~ 30 microns;
Described two-layer light guiding film (5) angle that superposition is staggered is mutually 90 °; The prism angle of described prism (54) is 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310715503.2A CN103644479B (en) | 2013-12-23 | 2013-12-23 | A kind of Parallel-plane backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310715503.2A CN103644479B (en) | 2013-12-23 | 2013-12-23 | A kind of Parallel-plane backlight source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103644479A CN103644479A (en) | 2014-03-19 |
| CN103644479B true CN103644479B (en) | 2016-03-30 |
Family
ID=50249735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310715503.2A Active CN103644479B (en) | 2013-12-23 | 2013-12-23 | A kind of Parallel-plane backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103644479B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261602A (en) * | 2010-05-28 | 2011-11-30 | 财团法人工业技术研究院 | Backlight module, area light source module and light guide grid structure |
| CN102901014A (en) * | 2012-11-14 | 2013-01-30 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display module using same |
| CN103090271A (en) * | 2013-01-24 | 2013-05-08 | 青岛海信电器股份有限公司 | Novel straight down type backlight module and liquid crystal display television (LCD TV) |
| CN203628383U (en) * | 2013-12-23 | 2014-06-04 | 东莞市奥普特自动化科技有限公司 | Plane parallel backlight source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09282921A (en) * | 1996-04-10 | 1997-10-31 | Canon Inc | Back light device and liquid crystal display device provided with this back light device |
| JP2002182201A (en) * | 2000-12-11 | 2002-06-26 | Shigeto Omori | Video display unit |
-
2013
- 2013-12-23 CN CN201310715503.2A patent/CN103644479B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261602A (en) * | 2010-05-28 | 2011-11-30 | 财团法人工业技术研究院 | Backlight module, area light source module and light guide grid structure |
| CN102901014A (en) * | 2012-11-14 | 2013-01-30 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display module using same |
| CN103090271A (en) * | 2013-01-24 | 2013-05-08 | 青岛海信电器股份有限公司 | Novel straight down type backlight module and liquid crystal display television (LCD TV) |
| CN203628383U (en) * | 2013-12-23 | 2014-06-04 | 东莞市奥普特自动化科技有限公司 | Plane parallel backlight source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103644479A (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203309702U (en) | Backlight module and display device | |
| WO2011066692A1 (en) | Uniform high-luminance side-light type backlight source | |
| JP2014150049A5 (en) | ||
| CN205229629U (en) | Backlight unit , display module assembly and display device | |
| JP2012138345A (en) | Edge-light type surface light-emitting device | |
| US20160004006A1 (en) | Backlight source and display device | |
| CN202473115U (en) | Light-emitting diode (LED) display module for refrigerator and refrigerator | |
| US20170139127A1 (en) | Reflective sheet, backlight module and display screen using the same | |
| CN202708858U (en) | Direct-type backlight source and display device | |
| CN203628383U (en) | Plane parallel backlight source | |
| TWM466278U (en) | Thinning LED direct-type backlight module | |
| WO2019071700A1 (en) | Liquid crystal display and backlight module thereof | |
| CN203784748U (en) | Vehicle-mounted sound system lens type LED (light emitting diode) backlight module | |
| CN103644479B (en) | A kind of Parallel-plane backlight source | |
| CN105676529B (en) | A kind of diffuser plate, backlight module and display device | |
| CN202972941U (en) | Light guide plate, light source system and display module | |
| JP2011159436A (en) | Edge light type lighting system | |
| JP2012123933A (en) | Edge light type surface light-emitting device | |
| CN201671297U (en) | LED backlight light-emitting floor tile | |
| TWM451470U (en) | Reflection sheet with light guide points, LED flat planar light source, LED flat lamp and plate LED lamp | |
| CN102691944A (en) | Light emitting diode (LED) edge-lighting backlight module | |
| CN202691669U (en) | Colored LED plane lamp | |
| CN202165943U (en) | Backlight and display device | |
| CN203773196U (en) | Backlight unit and display device employing same | |
| CN203350476U (en) | Light guide plate for LED liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Changan Jin Jin Ha Community Industrial District of Henan city of Dongguan province Guangdong 523000 liters Road No. 8 Patentee after: Guangdong aopute Polytron Technologies Inc Address before: 523000 Guangdong Province, Dongguan city Changan town community usha S358 Provincial Highway No. 551 Yifeng commercial building, 4 floor Patentee before: Dongguan OPT Machine Vision Tech Co.,Ltd. |