CN101071233A - Planar lightsource device - Google Patents
Planar lightsource device Download PDFInfo
- Publication number
- CN101071233A CN101071233A CN 200610081836 CN200610081836A CN101071233A CN 101071233 A CN101071233 A CN 101071233A CN 200610081836 CN200610081836 CN 200610081836 CN 200610081836 A CN200610081836 A CN 200610081836A CN 101071233 A CN101071233 A CN 101071233A
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- Prior art keywords
- light guide
- source device
- guide plate
- light
- light source
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Abstract
The invention is a plane light source device, mainly comprising at least a lighting component and a light guide module, where the light guide module comprises a light guide rod and a light guide plate, the lighting component is used to generate light beam, the light guide rod has at least a surface for the lighting component to be mounted with, and a reflecting surface to receive the light beam from the lighting component, the light guide plate has multiple end surfaces, one end surface is connected with the light guide rod and there is a gap between the light guide rod and the light guide plate, where the gap is used to guide the light into the light guide plate region far from the light guide rod so as to improve the whole uniformity of the back module.
Description
Technical field
The present invention is about a kind of planar light source device, especially about a kind of planar light source device that is applied to backlight module.
Background technology
General liquid crystal indicator or LCD TV, owing to itself can't produce light source, need by backlight module so that light source to be provided, and for reaching system's slimming requirement, be that light source (for example: light emitting diode) is reduced to a pointolite by several cold cathode fluorescent lamp, see also Fig. 1, be traditional planar light source device 10, mainly comprise light emitting diode (LED) 11 and light guide plate 12; Wherein the pointolite of light emitting diode 11 generations is to be incident to light guide plate side end face 121 earlier, then be incident to bottom surface of light guide plate 122, utilization is located at the diffusion point of bottom surface of light guide plate 122 to destroy total reflection phenomenon, the front that makes light guiding light guide plate 12 to be to produce area source, relends by being arranged at optical module (not shown) on the light guide plate 12 with the light source LCD panel (not shown) that leads.
Yet owing to be subject to the light emission angle of light emitting diode 11 itself, the light beam that is incident to light guide plate 12 can concentrate on the zone of close light emitting diode 11 light inlets, thereby cause backlight module 10 whole uniformity coefficient not good, therefore how to make light beam evenly be incident to the distributed areas that light guide plate 12 and control bundle are incident to light guide plate 12, to promote backlight module 10 whole uniformity coefficient, become industry research and development emphasis.
Summary of the invention
The object of the present invention is to provide a kind of planar light source device, between lamp guide in light guide module and light guide plate, the gap is set, be incident to light guide plate zone, improve the whole uniformity coefficient of backlight module whereby away from lamp guide with lead beam.
Another object of the present invention is to provide a kind of planar light source device, partly be connected with light guide plate, only need to use single mold once to penetrate on feasible the manufacturing and can make lamp guide and light guide plate simultaneously, so as to simplifying manufacturing course by lamp guide.
A further object of the present invention is to provide a kind of planar light source device, and the diffusion point on the left end face of being located at lamp guide and the wedge structure of lamp guide are to be added to the effective lighting light beam that is incident upon light guide plate.
Another purpose of the present invention is to provide a kind of planar light source device, and by the density that is provided with of the reflecting surface diffusion point that changes lamp guide, to adjust the luminous energy of input light guide plate, effectively control bundle is incident to the distributed areas of light guide plate.
For reaching above-mentioned purpose, the present invention is a kind of planar light source device, mainly comprise an at least one luminescence component and a light guide module, light guide module comprises a lamp guide and a light guide plate, wherein luminescence component is in order to produce light beam, wherein this lamp guide has at least simultaneously in order to this luminescence component to be set, and one reflecting surface in order to receive light beam from this luminescence component, this light guide plate has a plurality of end faces, one end connects this lamp guide, and has a gap between this lamp guide and this light guide plate, in order to guide this line source to be incident to this light guide plate zone away from this lamp guide, improve the whole uniformity coefficient of backlight module whereby, and the diffusion point that is provided with by the reflecting surface of lamp guide, to be added to the effective lighting light beam that is incident upon light guide plate.
Description of drawings
Fig. 1 is for showing the optical path synoptic diagram of conventional planar light supply apparatus.
Fig. 2 is for showing the optical path synoptic diagram of planar light source device of the present invention.
Fig. 3 is for showing the optical path synoptic diagram of planar light source device of the present invention.
Fig. 4 is for showing another embodiment of planar light source device of the present invention.
Fig. 5 to Fig. 8 is for showing other application form of planar light source device of the present invention.
The primary clustering symbol description
| 20 | Planar |
|
| 21、31、41、51 | |
|
| 22、32、42、52 | |
|
| 221、321、421、521 | |
|
| | Reflecting surface | |
| | Exiting surface | |
| 221c | The top |
|
| 221d、321d | The bottom |
|
| 221f | The diffusion point | |
| 221g | Reflector plate |
| 221h | The upper surface of lamp guide |
| 221j | The lower surface of |
| 222、322、422、522 | |
| 222a、322a、422a | |
| 222b、322b、422b | Its |
| 222c、322c、422c 522c | The top |
| 222d、522d | The bottom side end face |
| 222e | The upper surface |
| 222f | The |
| 222g | The diffusion point |
Embodiment
Relevant the present invention is for reaching above-mentioned purpose, and technological means that is adopted and effect thereof now lift several preferred embodiments, and conjunction with figs. are illustrated.
See also Fig. 2 and Fig. 3, planar light source device 20 of the present invention mainly comprises luminescence component 21 and light guide module 22, and wherein this light guide module 22 comprises lamp guide 221 and light guide plate 222; Wherein luminescence component 21 is the light emitting diode of white, in order to produce the pointolite of white, or utilize red, green and blue diode to mix and use to produce the pointolite of white or other color, and light emitting diode can be made of single or most chips, and its principle of luminosity mainly is to utilize light-emitting diode chip for backlight unit collocation fluorescent powder to excite the back to mix to produce into white light beam it; Wherein the lamp guide 221 of light guide module 22 has reflecting surface 221a, exiting surface 221b, and top side end face 221c and the bottom side end face 221d of connection reflecting surface 221a and exiting surface 221b, its reflecting surface 221a goes up and is provided with diffusion point 221e, and its top side end face 221c is by thick gradually thin wedge shape toward the extension of bottom side end face 221d direction, wherein reflecting surface 221a and exiting surface 221b are oppositely arranged, 21 outsides that are arranged at top side end face 221c of luminescence component, and the material of lamp guide 22 is a light-transmitting materials; Light guide plate 222 has left end face 222a, its right end face 222b and is corresponding top side end face 222c and bottom side end face 222d in two of vertical left side end face 222a or its right end face 222b, and the upper surface 222e and the lower surface 222f that connect left end face 222a and its right end face 222b, wherein integral thickness is wedge shape by thick attenuation by the left end face 221a end face 222b that turns right, and is provided with a plurality of diffusion point 222g in lower surface 222f; Wherein utilize the top side end face 221c of lamp guide 221 then to be connected with the top side end face 222c and the bottom side end face 222d of light guide plate 222 with bottom side end face 221d, and between the left end face 222a of its right end face 221b of lamp guide 221 and light guide plate 222, forming a gap, this gap can be groove or perforation.
Planar light source device 20 of the present invention, its luminescence component 21 is light emitting diode in the present embodiment, the pointolite that luminescence component 21 produces, some is incident to earlier in the light guide module 22, enter the reflecting surface 221a of lamp guide 221 by the top side end face 221c conduction of the lamp guide in the light guide module 22 221, go up set diffusion point 221e by the reflecting surface 221a that is located at lamp guide 221, can make the light beam of pointolite produce scattering and in addition homogenising to convert line source to, and utilize its top side end face 221c to destroy its total reflection toward the wedge structure of bottom side end face 221d, so that converting the light beam of line source to, reflecting surface 221a conducts to exiting surface 221b, again through the air interface in gap to be incident to the left end face 222a of light guide plate 222, then the light beam of line source is incident to the lower surface 222f of light guide plate 222, by the diffusion point 222g that is located at light guide plate 222 lower surface 222f, can make light beam produce scattering and in addition after the homogenising, upper surface 222e by light guide plate 222 penetrates to produce area source, with the light source as liquid crystal panel (not shown) again.
The present invention utilizes the air interface that the crack has between 222 of the lamp guide 221 be arranged at light guide module 22 and the light guide plate, be incident to light guide plate 222 zones with lead beam away from lamp guide 212, so as to improving the whole uniformity coefficient of backlight module, and the exiting surface 221a of its lamp guide 221 is connected with bottom side end face 222d respectively at the top side end face 222c of contiguous light guide plate 222 with the left end face 222a of light guide plate 222, only need to use single mold once to penetrate on feasible the manufacturing and can make lamp guide 221 and light guide plate 222 simultaneously, so as to simplifying manufacturing course.In addition and the wedge structure of diffusion point 221e on the reflecting surface 221a that is located at lamp guide 221 and lamp guide 222 to be added to the effective lighting light beam that is incident upon light guide plate 222.In addition, the present invention also can go up the density that is provided with of diffusion point 221e by the reflecting surface 221a that changes lamp guide 221, the feasible uniform light beam of line source produce power of doing conversion through lamp guide 221, to adjust the luminous energy of input light guide plate 222, suitably effective control bundle is incident to the distributed areas of light guide plate 222.
Continue to consult Fig. 4, be the second embodiment of the present invention, be with the first embodiment difference: luminescence component 21 is provided with the outside of the top side end face 221c and the bottom side end face 221d of lamp guide 221 in the light guide module 22 respectively, top side end face 221c is the plate shaped of same thickness toward the extension of bottom side end face 221d direction, utilize the lower surface 228 of lamp guide 221 to be connected with the lower surface 246 of light guide plate 222 to form the gap, and around the upper surface of lamp guide 221 221g and gap, coat a plurality of reflector plate 221f, so as to being added to the effective lighting light beam that is incident upon light guide plate 222.
Continue to consult Fig. 5, planar light source device 30 of the present invention, be that lamp guide 321 bottom side end face 321d in light guide module 32 are provided with luminescence component 31 respectively, the left end face 322a of light guide plate 322, its right end face 322b set up the lamp guide 321 of wedge shape separately, and form the gap between lamp guide 321 and the light guide plate 322.
Continue to consult Fig. 6, planar light source device 40 of the present invention, be at the diagonal angle of light guide plate 442 end luminescence component 41 to be set, the left end face 442a of light guide plate 442 and its right end face 442b are provided with the lamp guide 441 of wedge shape respectively, then form the gap between lamp guide 441 and the light guide plate 442.
Continue to consult Fig. 7, planar light source device 50 of the present invention is at the top side of lamp guide 521 end face and bottom side end face a plurality of luminescence components 51 to be set respectively, is by thick gradually thin wedge shape toward center line A direction by the top side end face of lamp guide 521 and bottom side end face.
Continue to consult Fig. 8, planar light source device of the present invention, be to be respectively equipped with a plurality of wedge shape lamp guides 621 at the left end face 622a and its right end face 622b of light guide plate 622, and form a plurality of gaps between lamp guide 621 and the light guide plate 622, and in the top side of lamp guide 62 end face 623, bottom side end face 624 and both sides a plurality of luminescence components 61 are set and 621 of wedge shape lamp guides are provided with luminescence component 61 respectively, utilize the lamp guide 62 of a plurality of luminescence components 61 and wedge shape, to be added to the illuminating bundle that is incident upon light guide plate 622, be incident to the brightness of light guide plate 622 so as to raising.In addition, luminescence component of the present invention also can be bulb, nanometer light and organic electric exciting light-emitting diode (OLED) except that using light emitting diode, can reach identical effect.
The above person only is that scope of the present invention is not limited to these preferred embodiments, and is all according to any change that the present invention did, and not breaking away under the spirit of the present invention, all belongs to scope of the present invention in order to convenient explanation the preferred embodiments of the present invention.
Claims (10)
1. planar light source device comprises:
At least one luminescence component is in order to produce light beam; And
One light guide module, it comprises a lamp guide and a light guide plate, wherein this lamp guide has at least simultaneously in order to this luminescence component to be set, and one reflecting surface in order to receive light beam from this luminescence component, this light guide plate has a plurality of end faces, one end connects this lamp guide, and has a gap between this lamp guide and this light guide plate.
2. planar light source device according to claim 1, wherein this luminescence component can be light emitting diode.
3. planar light source device according to claim 1, wherein this lamp guide is a light-transmitting materials.
4. planar light source device according to claim 1, wherein the reflecting surface of this lamp guide is provided with a plurality of diffusion points.
5. planar light source device according to claim 1, wherein this lamp guide and this gap around coat a plurality of reflector plates.
6. planar light source device according to claim 1, wherein this lamp guide is plate.
7. planar light source device according to claim 1, wherein this lamp guide is a wedge type.
8. planar light source device according to claim 1, wherein this gap is a groove.
9. planar light source device according to claim 1, wherein this gap is a perforation.
10. planar light source device according to claim 1, wherein this gap can be an air interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610081836 CN101071233A (en) | 2006-05-12 | 2006-05-12 | Planar lightsource device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610081836 CN101071233A (en) | 2006-05-12 | 2006-05-12 | Planar lightsource device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101071233A true CN101071233A (en) | 2007-11-14 |
Family
ID=38898523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610081836 Pending CN101071233A (en) | 2006-05-12 | 2006-05-12 | Planar lightsource device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101071233A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109633A (en) * | 2010-12-30 | 2011-06-29 | 友达光电股份有限公司 | Regional lighting side-light type light guide plate and regional lighting side-light type backlight module |
| CN101896762B (en) * | 2007-12-27 | 2012-08-08 | 京瓷株式会社 | Light source device and display device |
| CN101981370B (en) * | 2008-04-04 | 2012-12-19 | 京瓷株式会社 | Light source device and display device equipped with the light source device |
| WO2014110770A1 (en) * | 2013-01-16 | 2014-07-24 | 深圳市华星光电技术有限公司 | Light leading-in system, edge type backlight module and liquid crystal display |
| CN105371139A (en) * | 2014-08-25 | 2016-03-02 | 云光科技股份有限公司 | Side-light type light-emitting module |
| CN115223465A (en) * | 2021-04-17 | 2022-10-21 | 江门劳士国际电气有限公司 | Sign lamp manufacturing method, light-transmitting assembly and sign lamp |
-
2006
- 2006-05-12 CN CN 200610081836 patent/CN101071233A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896762B (en) * | 2007-12-27 | 2012-08-08 | 京瓷株式会社 | Light source device and display device |
| CN101981370B (en) * | 2008-04-04 | 2012-12-19 | 京瓷株式会社 | Light source device and display device equipped with the light source device |
| CN102109633A (en) * | 2010-12-30 | 2011-06-29 | 友达光电股份有限公司 | Regional lighting side-light type light guide plate and regional lighting side-light type backlight module |
| CN102109633B (en) * | 2010-12-30 | 2015-08-12 | 友达光电股份有限公司 | Regional lighting side-light type light guide plate and regional lighting side-light type backlight module |
| WO2014110770A1 (en) * | 2013-01-16 | 2014-07-24 | 深圳市华星光电技术有限公司 | Light leading-in system, edge type backlight module and liquid crystal display |
| CN105371139A (en) * | 2014-08-25 | 2016-03-02 | 云光科技股份有限公司 | Side-light type light-emitting module |
| CN115223465A (en) * | 2021-04-17 | 2022-10-21 | 江门劳士国际电气有限公司 | Sign lamp manufacturing method, light-transmitting assembly and sign lamp |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |