CN2594822Y - Background light system - Google Patents
Background light system Download PDFInfo
- Publication number
- CN2594822Y CN2594822Y CN 02250844 CN02250844U CN2594822Y CN 2594822 Y CN2594822 Y CN 2594822Y CN 02250844 CN02250844 CN 02250844 CN 02250844 U CN02250844 U CN 02250844U CN 2594822 Y CN2594822 Y CN 2594822Y
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- CN
- China
- Prior art keywords
- guide plate
- plate
- light guide
- light system
- back light
- 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.)
- Expired - Lifetime
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- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model relates to a background light system, which comprises at least a light source, a light guide plate and a scatter plate. The light guide plate is used for receiving beams which are generated by the light source and conducting the beams out, and the scatter plate is used for scattering and reflecting the beams, wherein, the light guide plate at least comprises an incident plane, an outgoing surface and a bottom surface; in the arrangement of at least a light source corresponding to the arrangement of at least an incident surface, the scatter plate is arranged on the bottom of the light guide plate; the shape of the scatter plate is complementary to the shape of the bottom of the light guide plate, and the scatter plate is adhered with the bottom of the light guide plate; the scatter plate is provided with a plurality of scattering particles.
Description
[technical field]
The utility model relates to a kind of backlight liquid crystal display system that is used for.
[background technology]
LCD is a kind of non-self-emission display apparatus, main passing through or obstructedly come to realize display effect by control light beam that external light source sends, therefore need external light source and corresponding guiding device, as back light system, this guiding device can be with the beam direction display panel that external light source sent.
Seeing also Fig. 1, is a kind of back light system 100 that the United States Patent (USP) of on June 18th, 2002 bulletin is disclosed for the 6th, 406, No. 159, and it roughly is wedge shape, comprises a light source 5, a light source cover 4, a light guide plate 1, a reflecting plate 2 and a diffuser plate 6.This light guide plate 1 comprises a plane of incidence 11, an exit facet 12, relative with exit facet 12 and angled with the plane of incidence 11 bottom surface 13.This plane of incidence 11 relative light sources 5 are provided with, and receive the light beam from light source 5, and these bottom surface 13 regular distribution have a plurality of sites of the same size 7, and this site 7 enters the light beam of light guide plate 1 in order to scattering, reflection by light source 5 and with the exit facet 12 of its guiding light guide plate 1.This diffuser plate 6 further spreads the light beam of light guide plate 1 exit facet 12 outgoing, thereby obtains preferable diffusion effect, and the uniformity coefficient of back light system 100 bright dippings is preferable.But this back light system 100 adopts element more, and structure is complicated, and cost is higher.
[utility model content]
In order to overcome prior art back light system complex structure, deficiency that cost is high, the utility model provides a kind of back light system, and this back light system is simple in structure, cost is lower.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of back light system is provided, this back light system comprises at least one light source, a light guide plate and a scatter plate, light beam and derivation that this light guide plate is sent in order to receive light source, this scatter plate is in order to scattering, folded light beam.This light guide plate comprises at least one plane of incidence, an exit facet and a bottom surface, this at least one light source is with respect to this at least one plane of incidence setting, this scatter plate is arranged at bottom surface of light guide plate one side, and the bottom surface of itself and light guide plate has complementary shape, has a plurality of scattering particles in the scatter plate.
Compared with prior art, the utlity model has following advantage: because of the bottom surface of the light guide plate of the utility model back light system is provided with a scatter plate, have a plurality of scattering particles in this scatter plate, it integrates the function of diffuser plate and site, can effectively reduce the component number of back light system, thereby simplify the structure of back light system and reduce cost.
[description of drawings]
Fig. 1 is a kind of sectional view of prior art back light system.
Fig. 2 is the stereographic map of the utility model back light system first embodiment.
Fig. 3 is the sectional view of back light system shown in Figure 2.
Fig. 4 is the sectional view of the utility model back light system second embodiment.
Fig. 5 is the sectional view of the utility model back light system the 3rd embodiment.
Fig. 6 is the sectional view of the utility model back light system the 4th embodiment.
[embodiment]
Seeing also Fig. 2 and Fig. 3, is the utility model back light system first embodiment, and this back light system 200 comprises a light source 25, a light guide plate 21 and a scatter plate 26.Wherein, this light guide plate 21 roughly is wedge shape, comprises a plane of incidence 211, an exit facet 213 and a bottom surface 212.This exit facet 213 links to each other with this plane of incidence 211, and this bottom surface 212 is relative with this exit facet.These plane of incidence 211 relative light sources 25 are provided with, and receive the light beam that sends from light source 25.This bottom surface 212 is bonding, into a single integrated structure with this scatter plate 26.Setting also can be separated with reflecting plate 26 in this bottom surface 212, fixes by external frame (figure does not show).The thickness of this scatter plate 26 is along increasing gradually away from light source 25 directions.From the light beam of light beam even scattering of formation under light guide plate 21 bottom surfaces 212 and scatter plate 26 actings in conjunction that light guide plate 21 planes of incidence enter, and from 213 outgoing of light guide plate 21 exit facets.For increasing the bright dipping briliancy of back light system 200, this back light system 200 also comprises a light source cover (figure does not show), and this light source cover partly surrounds this light source 25, sends the ratio that light beam enters light guide plate 21 in order to improve light source 25.Simultaneously, the bottom surface of scatter plate 26 (not indicating) is provided with a reflecting plate 22, and reflection makes it reenter light guide plate 21 through the light beam that scatter plate 22 leaks.This reflecting plate 22 can be one to be bonded in the reflectance coating of scatter plate 26 bottom surfaces (indicate), also can be provided with separately.
The material of scatter plate 26 is generally PMMA (PolyMethyl MethAcry-late, polymethylmethacrylate), a plurality of scattering particles 261 wherein evenly distribute, the material of these scattering particles 261 also is PMMA, particle diameter is roughly between 0.1-10m, the effective scattering of light beam, reflection from 211 incidents of light guide plate 21 planes of incidence can be formed the light beam of evenly dispersing.These scattering particles 261 also can be distributed in this scatter plate 26 dispersedly.This scatter plate 26 is integrated the function of site and diffuser plate, can simplify back light system 200 structures, reduces its cost.
Seeing also Fig. 4, is the sectional view of the utility model back light system second embodiment.This back light system 300 is identical substantially with the back light system 200 of first embodiment, its difference is, the bonding place of these back light system 300 light guide plate 31 and its scatter plate 36, promptly the bottom surface 312 of light guide plate 31 is concave surfaces, the thickness of light guide plate 31 is along reducing gradually away from light source (indicating) direction.
Seeing also Fig. 5, is the sectional view of the utility model back light system the 3rd embodiment.This back light system 400 is identical with the back light system 200 of first embodiment substantially, its difference is, the bonding place of these back light system 400 light guide plate 41 and its scatter plate 46, promptly the bottom surface 412 of light guide plate 41 is convex surfaces, the thickness of light guide plate 41 is along reducing gradually away from light source (indicating) direction.
Seeing also Fig. 6, is the 4th embodiment of the utility model back light system, and this back light system 500 can be considered by two aforesaid back light systems 200,300 or 400 to be formed.This back light system 500 comprises two light sources 55, a light guide plate 51 and a scatter plate 56.Wherein, this light guide plate 51 roughly is double-wedge, comprises two planes of incidence 511, a bottom surface 512 and an exit facet 513.The relative respectively light source 55 of this plane of incidence 511 is provided with, and receives the light beam that sends from light source 55.This bottom surface 512 is bonding, into a single integrated structure with this scatter plate 56.From the light beam of light beam even scattering of formation under light guide plate 51 bottom surfaces 512 and scatter plate 56 actings in conjunction that light guide plate 51 planes of incidence 511 enter, and from 513 outgoing of light guide plate 51 exit facets.For increasing the bright dipping briliancy of back light system 500, this back light system 500 also comprises two light source covers (figure does not show), and this light source cover partly surrounds its light source 55 respectively, sends the ratio that light beam enters light guide plate 51 in order to improve light source 55.Simultaneously, the bottom surface of scatter plate 56 (not indicating) is provided with a reflecting plate 52, and reflection makes it reenter light guide plate 51 through the light beam that scatter plate 56 leaks.This reflecting plate 52 can be one to be bonded in the reflectance coating of scatter plate 56 bottom surfaces, also can be provided with separately.The bottom surface 512 of this light guide plate 51 also can be concave surface or convex surface, or similar curved surface.
The material of this scatter plate 56 is generally PMMA, wherein is evenly distributed with a plurality of scattering particles 561, also can be distribution at random.The material of these scattering particles 56 also is PMMA, and particle diameter roughly between 0.1-10 μ m, can form the light beam of evenly dispersing with the effective scattering of light beam, the reflection from 511 incidents of light guide plate 51 planes of incidence.This scatter plate 56 is integrated the function of sites and diffuser plate, can simplify the structure of back light system 500 and reduces cost.
Claims (10)
1. back light system, comprise at least one light source, a light guide plate and a scatter plate, this light guide plate comprises at least one plane of incidence, an exit facet and a bottom surface, this exit facet links to each other with this plane of incidence, this bottom surface is relative with this exit facet, and this at least one light source is characterized in that with respect to this at least one plane of incidence setting: this scatter plate is arranged at bottom surface of light guide plate one side, the bottom surface of itself and light guide plate has complementary shape, has a plurality of scattering particles in the scatter plate.
2. back light system as claimed in claim 1 is characterized in that: this back light system further comprises a reflecting plate, and this reflecting plate is positioned at the opposite side of the relative light guide plate of this scatter plate.
3. back light system as claimed in claim 1 is characterized in that: this back light system further comprises a reflectance coating, and this reflectance coating is attached at the opposite side of the relative light guide plate of this scatter plate.
4. back light system as claimed in claim 1 is characterized in that: this light guide plate and scatter plate combination are plate shaped.
5. back light system as claimed in claim 1 is characterized in that: this light guide plate is wedge shape or double-wedge.
6. back light system as claimed in claim 1 is characterized in that: the thickness of this light guide plate is along reducing gradually away from light source direction.
7. back light system as claimed in claim 6 is characterized in that: the bottom surface of this light guide plate is a curved surface.
8. back light system as claimed in claim 7 is characterized in that: the bottom surface of this light guide plate is convex surface or concave surface.
9. back light system as claimed in claim 1 is characterized in that: these scattering particles are evenly to distribute or at random being distributed in the scatter plate.
10. back light system as claimed in claim 1 is characterized in that: this scatter plate is bonding with this bottom surface of light guide plate or separate setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250844 CN2594822Y (en) | 2002-12-26 | 2002-12-26 | Background light system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250844 CN2594822Y (en) | 2002-12-26 | 2002-12-26 | Background light system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594822Y true CN2594822Y (en) | 2003-12-24 |
Family
ID=33720946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02250844 Expired - Lifetime CN2594822Y (en) | 2002-12-26 | 2002-12-26 | Background light system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594822Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432747C (en) * | 2006-02-08 | 2008-11-12 | 中华映管股份有限公司 | Back lighting module and lighting mixed module there of |
| CN102520549A (en) * | 2011-10-24 | 2012-06-27 | 友达光电股份有限公司 | Transparent display |
| CN102906607A (en) * | 2010-04-23 | 2013-01-30 | 欧司朗股份有限公司 | Surface light guide and luminaire |
| CN101517442B (en) * | 2006-09-19 | 2013-12-11 | 皇家飞利浦电子股份有限公司 | Illumination system, luminaire and display device |
| WO2016101300A1 (en) * | 2014-12-22 | 2016-06-30 | 深圳市华星光电技术有限公司 | Backlight module, transparent display panel and transparent display device |
| CN106707400A (en) * | 2015-11-13 | 2017-05-24 | 技嘉科技股份有限公司 | Light guide plate, light guide assembly and electronic device |
| CN109856714A (en) * | 2018-10-23 | 2019-06-07 | 友达光电股份有限公司 | The display of light leakage prevention film assembly and application the light leakage prevention film assembly |
-
2002
- 2002-12-26 CN CN 02250844 patent/CN2594822Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432747C (en) * | 2006-02-08 | 2008-11-12 | 中华映管股份有限公司 | Back lighting module and lighting mixed module there of |
| CN101517442B (en) * | 2006-09-19 | 2013-12-11 | 皇家飞利浦电子股份有限公司 | Illumination system, luminaire and display device |
| CN102906607A (en) * | 2010-04-23 | 2013-01-30 | 欧司朗股份有限公司 | Surface light guide and luminaire |
| US9182531B2 (en) | 2010-04-23 | 2015-11-10 | Osram Ag | Surface light guide and luminaire |
| CN102906607B (en) * | 2010-04-23 | 2016-03-09 | 欧司朗股份有限公司 | Planar light conductor and light fixture |
| CN102520549A (en) * | 2011-10-24 | 2012-06-27 | 友达光电股份有限公司 | Transparent display |
| CN102520549B (en) * | 2011-10-24 | 2015-06-10 | 友达光电股份有限公司 | Transparent display |
| WO2016101300A1 (en) * | 2014-12-22 | 2016-06-30 | 深圳市华星光电技术有限公司 | Backlight module, transparent display panel and transparent display device |
| CN106707400A (en) * | 2015-11-13 | 2017-05-24 | 技嘉科技股份有限公司 | Light guide plate, light guide assembly and electronic device |
| CN109856714A (en) * | 2018-10-23 | 2019-06-07 | 友达光电股份有限公司 | The display of light leakage prevention film assembly and application the light leakage prevention film assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121226 Granted publication date: 20031224 |