CN2588410Y - Area source module set - Google Patents
Area source module set Download PDFInfo
- Publication number
- CN2588410Y CN2588410Y CN02250572U CN02250572U CN2588410Y CN 2588410 Y CN2588410 Y CN 2588410Y CN 02250572 U CN02250572 U CN 02250572U CN 02250572 U CN02250572 U CN 02250572U CN 2588410 Y CN2588410 Y CN 2588410Y
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- CN
- China
- Prior art keywords
- guide plate
- light
- light source
- source module
- light guide
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- 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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- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model relates to an area light source module set, which comprises a light guide plate provided with at least one incident plane and at least a light source positioned on the side end of the light guide plate, wherein, the incident face is provided with at least one groove matched with the light source correspondingly; the surface of the groove is provided with a curved surface with certain curvature and the surface is opposite to the light source, wherein, the curved surface is a partially cylindrical surface or a partially elliptic cylinder; the light source is positioned on the centre point corresponding to the cylindrical surface or the focus corresponding to the elliptic cylinder, which leads light beams generated by the light source to vertically shoot on the surface.
Description
[technical field]
The utility model relates to the area source module that a kind of LCD is used.
[background technology]
Therefore advantages such as that LCD has is frivolous, power consumption is low are widely used in the modernized information equipments such as notebook computer, mobile phone, PDA.Because liquid crystal itself does not have the characteristics of luminescence, it will realize that Presentation Function then needs an area source module to provide light source for it.
Existing area source module comprises light source and light guide plate, and light source is arranged on the opposite face of light guide plate incidence surface, sends light beam from light source and enters in the light guide plate and transmit through this incidence surface, and the line source or the pointolite of light source is converted to the area source outgoing.The bottom surface distribution of net lattice array of this light guide plate is used for broken beam at the total reflection condition of light guide plate internal transmission, and can carry out scattering improving the homogeneity of light guide plate outgoing beam to incident ray, and then improves the overall performance of area source module.The density of this site, all available different designs of size adapt to different area source modules.
A kind of existing area source module can be consulted No. the 354654th, the TaiWan, China patent (shown in Figure 1) of bulletin on March 11st, 1999.This area source module 9 is made up of light guide plate 10, trnaslucent materials plate 20, reflectorized material box 30 and light source 40.This trnaslucent materials plate 20 folded being located at above the light guide plate 10, around the light guide plate 10 and basal surface 12 be to be included in this reflectorized material box 30, these reflectorized material box 30 1 sides are offered the locating slot 31 that is used for accommodating light source 40.During work, the light beam that light source 40 sends is from a side incident of light guide plate 10, gradually layer wave lines and reflectorized material box 30 effect backs through light guide plate 10 basal surfaces 12 produce planar light, and from exiting surface 11 outgoing of light guide plate 10, this trnaslucent materials plate 20 makes this planar light distribution more even.
Yet, because light source 40 has certain emission angle, can be 30 as the emission angle of light emitting diode spends to 130 degree, and the side of these light guide plate 10 relative light sources 40 is planar structures, make this offside reflection of beam portion lease making that light source 40 sends and can't all enter light guide plate 10, thereby reduce the light beam utilization factor, not only reduce the briliancy of area source module 9, and reduce the briliancy of the LCD that adopts this area source module 9.
[utility model content]
For the low and lower defective of bright dipping briliancy of light utilization that overcomes area source module in the prior art, the utility model provides a kind of light beam utilization factor and the higher area source module of bright dipping briliancy.
The technical scheme that the utility model technical solution problem is adopted is: a kind of area source module is provided, it comprises that one has light guide plate and at least one light source that is positioned at this light guide plate side of at least one plane of incidence, this plane of incidence is offered at least one and the groove light source corresponding matching, this groove and light source facing surfaces are the curved surfaces with specific curvature, wherein this curved surface is the part face of cylinder or part elliptic cylinder, light source is positioned at the center of circle of corresponding circle cylinder or the focus of corresponding elliptic cylinder, and the light beam that light source is sent is normally incident in this surface.
The beneficial effects of the utility model are: because the plane of incidence of the light guide plate that the area source module adopts is offered a plurality of grooves, the surface of this groove is the curved surface with specific curvature, the light beam that makes light source send can be perpendicular to this surface incident, thereby reduce to reflect the energy loss of generation, not only improve the light beam utilization factor, and increase area source module briliancy.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of prior art area source module.
Fig. 2 is the stereographic map of the utility model area source module first embodiment.
Fig. 3 is the network point distribution synoptic diagram of modular surface light source shown in Figure 2.
Fig. 4 is the stereographic map of the utility model area source module second embodiment.
Fig. 5 is the network point distribution synoptic diagram of area source module shown in Figure 4.
Fig. 6 is the stereographic map of the utility model area source module the 3rd embodiment.
Fig. 7 is the side view that Fig. 6 is applied to a LCD.
[embodiment]
As shown in Figure 2, be first embodiment of the utility model area source module, this area source module 100 comprises a plurality of light sources 110 and a light guide plate 120.This light source 110 is to be used for sending light beam, and the transmission direction that these light guide plate 120 these light sources 110 of guiding send light beam is converted into the area source outgoing.
This light source 110 is pointolites, as light emitting diode or miniature bulb.This light source 110 can be allocated required light source colour and briliancy according to the light emitting diode or the miniature bulb of a plurality of different colours of configuration.
Please consult Fig. 3 together, this light guide plate 120 is plate shaped light guide plate, and it adopts transparent materials such as acryl, glass or polycarbonate to make.This light guide plate 120 comprise a plane of incidence 121, the exiting surface 122 that links to each other with the plane of incidence 121 and with exiting surface 122 opposed bottom surface 123.This plane of incidence 121 is to be used for receiving the light beam that light source 110 sends, and offers on it and light source 110 corresponding a plurality of grooves 124.The energy loss that the light beam that sends for reduction light source 110 produces in the plane of incidence 121 reflections, the surface of these a plurality of grooves 124 forms a part of face of cylinder, corresponding light source 110 is positioned at face of cylinder circle centre position, so that the light beam that light source 110 sends is perpendicular to the surperficial incident of groove 124.In addition, for the light beam that light source 110 is sent all enters light guide plate 120 from groove 124, the emission angle of the radian of this groove 124 and corresponding light source 110 equates, thereby improves the light beam utilization factor.For outgoing beam is evenly distributed, this exiting surface 122 can be processed into the uneven surface with certain roughness.The bottom surface 123 of light guide plate 120 is provided with site array 127, is used for improving the briliancy and the homogeneity of light guide plate 120 outgoing beams.The size of this site 127 is to increase progressively along the direction away from the plane of incidence 121, can be spherical shape.In addition, this site 127 also can be cylindric, square, pyramid or other suitable shape.This site 127 can be printed or mode such as ejection formation is distributed in the bottom surface 123 of light guide plate 120.In addition, also can be 123 a plurality of V-type grooves (figure does not show) are set replace this site array 127 in the bottom surface.
Seeing also Fig. 4 and Fig. 5, is second embodiment of the utility model area source module.This area source module 200 comprises a plurality of light sources 110 and a light guide plate 220.This light guide plate 220 comprises two planes of incidence 221, an exiting surface 222 and a bottom surface 223.This two plane of incidence 221 is offered at least one groove 224 that is used for cooperating light source 110 respectively.The surface of this groove 224 is part elliptic cylinders, on it according to method plating one deck anti-reflection films 225 such as electron beam evaporation plating or chemical vapour deposition techniques, light source 110 is the focus places that are positioned at this elliptic cylinder, and the emission angle of the radian of groove 224 and light source 110 matches, the light beam that makes light source 110 send all enters light guide plate 220 perpendicular to the surface of groove 224, thereby improve the light beam utilization factor, improve the bright dipping briliancy of area source module 200.These bottom surface 223 tools evenly distribute and are used for improving the site array 227 of area source module 200 whole optical properties.This bottom surface 223 also can be provided with vaporificly picks flower or texture (figure do not show) replaces this site array 227.
Seeing also Fig. 6, is the 3rd embodiment of the utility model area source module.This area source module 300 comprises a light source 110 and a light guide plate 320.This light source 110 can be one or more.This light guide plate 320 is wedge shape light guide plate, and it comprises bottom surface 323 that a plane of incidence 321, tilts to link to each other with the plane of incidence 321 and an exiting surface 322 relative with bottom surface 323.This plane of incidence 321 is offered at least one groove 324 that is used for cooperating light source 110, this groove 324 is one to have the curved surface of given shape, the emission angle of its radian and light source 110 equates, the light beam that makes light source 110 send all enters light guide plate 320 perpendicular to the surface of groove 324, thereby improve the light beam utilization factor, improve the bright dipping briliancy of area source module 300.For allocating required color and briliancy, the surface of this groove 324 forms a fluorescent layer 326.These bottom surface 323 plating reflectance coatings (figure does not show) prevent light beam 323 effusions from the bottom surface with reflection projection light beam thereon, thereby increase the bright dipping briliancy of area source module 300.
Seeing also Fig. 7, is the side view that Fig. 6 is applied to a LCD.This LCD 90 comprises a liquid crystal panel 91 and area source module 300 as shown in Figure 6.During work, the light beam that light source 110 sends exiting surface 322 from light guide plate 320 after light guide plate 320 converts area source to goes out to inject liquid crystal panel 91.For further improving the briliancy and the uniformity coefficient of outgoing beam, a prism plate 92 and a diffuser plate 93 are set between liquid crystal panel 91 and area source module 300.For preventing bottom surface 323 outgoing of light beam from light guide plate 320, this LCD 90 further comprises the reflecting plate 94 that is positioned at these 323 places, bottom surface.In addition, also can on this bottom surface 323, plate reflectance coating (figure does not show) to replace reflecting plate 94.See also Fig. 6, because the plane of incidence 321 of this light guide plate 320 is offered the groove 324 of given shape, itself and the improvement that can effectively realize area source module 300 and LCD 90 whole optical properties cooperating of light source 110.
Claims (8)
1. area source module, it comprises that one has light guide plate and at least one light source that is positioned at this light guide plate side of at least one plane of incidence, it is characterized in that this plane of incidence offers at least one and the groove light source corresponding matching, this groove and light source facing surfaces are the curved surfaces with specific curvature, wherein this curved surface is the part face of cylinder or part elliptic cylinder, and light source is positioned at the center of circle of corresponding circle cylinder or the focus of corresponding elliptic cylinder.
2. area source module as claimed in claim 1 is characterized in that this light source is light emitting diode or miniature bulb.
3. area source module as claimed in claim 1 is characterized in that this light guide plate can be plate shaped, wedge shape.
4. area source module as claimed in claim 1 is characterized in that bottom surface that this light guide plate links to each other with the plane of incidence is provided with the site or the V-shaped groove of regular distribution.
5. area source module as claimed in claim 1 is characterized in that this curved surface is coated with anti-reflection film.
6. area source module as claimed in claim 1 is characterized in that the curved surface of this relative light source is provided with fluorescent layer.
7. area source module as claimed in claim 1 is characterized in that the bottom surface that this light guide plate links to each other with the plane of incidence is coated with reflectance coating.
8. area source module as claimed in claim 1, the exiting surface that it is characterized in that this light guide plate is an atomization surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02250572U CN2588410Y (en) | 2002-12-20 | 2002-12-20 | Area source module set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02250572U CN2588410Y (en) | 2002-12-20 | 2002-12-20 | Area source module set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588410Y true CN2588410Y (en) | 2003-11-26 |
Family
ID=33720768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02250572U Expired - Lifetime CN2588410Y (en) | 2002-12-20 | 2002-12-20 | Area source module set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588410Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414382C (en) * | 2005-09-07 | 2008-08-27 | 群康科技(深圳)有限公司 | Light guide plate and backlight module using same |
| CN100439998C (en) * | 2004-06-25 | 2008-12-03 | 三星电子株式会社 | Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly |
| CN100582823C (en) * | 2006-12-25 | 2010-01-20 | 鸿富锦精密工业（深圳）有限公司 | light conducting plate and backlight module group |
| CN101469838B (en) * | 2007-12-28 | 2011-03-09 | 夏普株式会社 | Surface light source and liquid crystal display including the same |
| CN102168841A (en) * | 2010-02-26 | 2011-08-31 | 中强光电股份有限公司 | Light guide plate and backlight module |
| CN102112798B (en) * | 2008-08-05 | 2013-05-01 | 夏普株式会社 | Surface light source device |
| CN106030203A (en) * | 2014-02-05 | 2016-10-12 | Lg伊诺特有限公司 | Lighting apparatus |
| CN107092051A (en) * | 2017-06-20 | 2017-08-25 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN108954038A (en) * | 2018-06-12 | 2018-12-07 | 北京交通大学 | Multi-functional chromatography area source |
| CN110148354A (en) * | 2019-05-27 | 2019-08-20 | Oppo广东移动通信有限公司 | Backlight module, display screen component and electronic equipment |
| CN111795354A (en) * | 2019-04-03 | 2020-10-20 | 株式会社小糸制作所 | Vehicle lamp |
-
2002
- 2002-12-20 CN CN02250572U patent/CN2588410Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439998C (en) * | 2004-06-25 | 2008-12-03 | 三星电子株式会社 | Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly |
| CN100414382C (en) * | 2005-09-07 | 2008-08-27 | 群康科技(深圳)有限公司 | Light guide plate and backlight module using same |
| CN100582823C (en) * | 2006-12-25 | 2010-01-20 | 鸿富锦精密工业（深圳）有限公司 | light conducting plate and backlight module group |
| CN101469838B (en) * | 2007-12-28 | 2011-03-09 | 夏普株式会社 | Surface light source and liquid crystal display including the same |
| CN102112798B (en) * | 2008-08-05 | 2013-05-01 | 夏普株式会社 | Surface light source device |
| CN102168841A (en) * | 2010-02-26 | 2011-08-31 | 中强光电股份有限公司 | Light guide plate and backlight module |
| CN106030203A (en) * | 2014-02-05 | 2016-10-12 | Lg伊诺特有限公司 | Lighting apparatus |
| CN106030203B (en) * | 2014-02-05 | 2020-06-23 | Lg伊诺特有限公司 | Lighting device |
| CN107092051A (en) * | 2017-06-20 | 2017-08-25 | 合肥惠科金扬科技有限公司 | Light guide plate, backlight module and display device |
| CN108954038A (en) * | 2018-06-12 | 2018-12-07 | 北京交通大学 | Multi-functional chromatography area source |
| CN111795354A (en) * | 2019-04-03 | 2020-10-20 | 株式会社小糸制作所 | Vehicle lamp |
| CN110148354A (en) * | 2019-05-27 | 2019-08-20 | Oppo广东移动通信有限公司 | Backlight module, display screen component and electronic equipment |
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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: 20121220 Granted publication date: 20031126 |