CN201606821U - Light guide plate and back light module - Google Patents
Light guide plate and back light module Download PDFInfo
- Publication number
- CN201606821U CN201606821U CN2009202620395U CN200920262039U CN201606821U CN 201606821 U CN201606821 U CN 201606821U CN 2009202620395 U CN2009202620395 U CN 2009202620395U CN 200920262039 U CN200920262039 U CN 200920262039U CN 201606821 U CN201606821 U CN 201606821U
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- light
- lgp
- parallel
- guide plate
- module
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Abstract
The utility model provides a light guide plate and a back light module; the back light module comprises a light source, the light guide plate and a frame; the light guide plate guides the transmission direction of light rays emitted by the light source, the frame contains the light guide plate and the light source; the light guide plate comprises a base plate, the base plate comprises a light incidence plane, a light emitting plane connected with the light incidence plane and a bottom surface opposite to the light emitting plane, a plurality of micro bulged structures which are arranged in parallel with the same density are arranged on the light emitting plane, a plurality of internal grooves which are arranged in parallel with the same density are arranged in the upper half part of the base plate, the parallel arrangement direction of the internal grooves is not parallel to the parallel arrangement direction of the micro bulged structures in space. The light guide plate of the back light module is provided with the internal grooves and the micro bulged structures, the functions of the traditional light guide plate, an upper brightness enhancement film and a lower brightness enhancement film are integrated into one body, the functions of the original back light module are kept and the traditional upper brightness enhancement film and the lower brightness enhancement film are omitted, the structure of the back light module is simplified and the thickness is reduced.
Description
Technical field
The utility model belongs to the display backlight technical field, relates in particular to a kind of LGP and module backlight.
Background technology
Module backlight all has very important use in products such as MP3, mobile phone, notebook, display, it mainly provides uniform surface light source.The luminous module backlight of side becomes the prevailing model of development backlight because that it can be done is thinner.
Fig. 1 is the structural representation of the luminous module backlight of side of the prior art.
Please refer to Fig. 1, the luminous module backlight of existing side (being also referred to as traditional module backlight) comprises a light source 100, a reflector plate 200, traditional LGP 300, a diffusion sheet 400, lower floor's brightening piece 500, a upper strata brightening piece 600 and a framework 700.Described light source 100 is spot light or line source.The transmission direction of described light source 100 emitted lights of described traditional LGP 300 guiding is used for converting spot light or line source to area source.Described reflector plate 200 reflexes to this tradition LGP 300 with the light that described traditional LGP 300 bottoms spill, and described traditional LGP 300 reboots the transmission direction of the light of described reflector plate 200 reflections, to improve the light utilization of described light source 100.Described scattering sheet 400 comprises a substrate 410 and a diffusion layer 420 that is arranged on the described substrate 410, and affiliated diffusion layer 420 comprises some diffusion particles.The light that described diffusion sheet 400 is used for penetrating from traditional LGP 300 carries out scattering, makes light more even.Described lower floor brightening piece 500 comprises a substrate 510 and the prism of being located on this substrate 510 520.Described lower floor brightening piece 500 and upper strata brightening piece 600 carry out the optically focused processing to highlight with light in level and vertical direction.Described framework 700 is contained in described light source 100, reflector plate 200, traditional LGP 300, diffusion sheet 400, lower floor's brightening piece 500 and upper strata brightening piece 600 wherein, plays fixing and protective effect.Described framework 700 is made by engineering plastic materials.
Traditional module backlight need use scattering sheet, brightening piece to provide uniform surface light source to cooperate traditional LGP that light is handled, this traditional backlight module is used sandwich construction, cause complex structure, and brightening piece is only grasped in minority factory hand, cost has just increased the cost of this traditional backlight module virtually than higher.
The utility model content
The utility model is for solving traditional high technical problem of back light module unit structure complexity, cost, and provide a kind of and can reduce cost, module backlight and LGP thereof simple in structure.
Concrete technical scheme of the present utility model and beneficial effect are as follows:
A kind of LGP, comprise a substrate, described substrate comprise incidence surface, the exiting surface that is connected with incidence surface and with the exiting surface opposed bottom surface, described exiting surface is provided with the micro-protuberance structure that some isodensity are arranged in parallel, be provided with the internal groove that some isodensity are arranged in parallel in the first half of described substrate, the direction that is arranged in parallel of this internal groove and the director space that is arranged in parallel of micro-protuberance structure are not parallel.
LGP of the present utility model has internal groove and micro-protuberance structure, with the traditional LGP in the traditional backlight module, the function of brightening piece integrates up and down, make module backlight keep the function of traditional backlight module and save the brightening piece up and down in the traditional backlight module with this LGP, reduce the module backlight with this LGP cost, simplified its structure, reduce its thickness.
Further, the direction that is arranged in parallel of preferred described this internal groove is vertical mutually with the orientation space of micro-protuberance structure, with realization LGP best receipts light effect in different angles between internal groove and micro-protuberance structure.
Further, the cross sectional shape of selected microprotrusion structure and internal groove is V-type.The mean breadth of this V-type is 0.05～3mm, and the average angle of drift angle is 70 °～120 °.To realize the preferable light effect that goes out.
Further, preferred described incidence surface is a matsurface, to solve the firefly effect.
Further, big 90 degree of the angle between preferred described incidence surface and the exiting surface reduce light and penetrate from the side less than 120 degree, increase light and penetrate from exiting surface.
The module backlight that the utility model provides comprises light source and framework, wherein, also comprises above-mentioned LGP, the transmission direction of the described light source emitted light of described light-guide plate guides, and described framework is contained in described LGP and described light source wherein.
Further, preferred described light source is LED spot light or LED line source, can realize that module backlight of the present utility model is more lightening.
The beneficial effect of module backlight of the present utility model is brought by this LGP, and therefore, this module backlight has that cost is low, simple in structure, advantage of small thickness.
Description of drawings
Fig. 1 is the structural representation of the luminous module backlight of side of the prior art;
Fig. 2 is the module partial structurtes schematic diagram backlight of the utility model embodiment one;
Fig. 3 is the cutaway view of AA line in the accompanying drawing 2;
Fig. 4 is the module partial structurtes schematic diagram backlight of the utility model embodiment two;
Fig. 5 is the back light module unit structure schematic diagram of the utility model embodiment three;
Fig. 6 is the back light module unit structure schematic diagram of the utility model embodiment four.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment one
Fig. 2 is the module partial structurtes schematic diagram backlight of the utility model embodiment one; Fig. 3 is the cutaway view of AA line in the accompanying drawing 2;
Please refer to Fig. 2 and Fig. 3, the utility model module better embodiment backlight comprises light source 3, reflector plate 1, LGP 2, diffusion sheet 6 and framework 5, and described framework 5 has the rectangular shape of opening for the top.Described framework 5 is contained in light source 3, reflector plate 1, LGP 2 and diffusion sheet 6 wherein.Described light source 3 is spot light or line source, can be LED spot light or LED line source, is used to reduce the volume of module backlight.Present embodiment preferred light source 3 is the LED line source.
The transmission direction of described light source 3 emitted lights of described LGP 2 guiding is used for converting light source 3 to required area source.Described LGP 2 comprises a substrate 25, and this substrate 25 makes LGP 2 have stronger light peneration by optical grade PMMA (acrylic material) or PC (Merlon) injection mo(u)lding.Described substrate 25 comprise incidence surface, the exiting surface that is connected with incidence surface and with the exiting surface opposed bottom surface.Described bottom surface is provided with the site 21 of some queueing disciplines, thereby the light that processing such as described site 21 will the enter light of described LGP 2 reflects, refraction guiding light sources 3 send penetrates from exiting surface, forms area source.The moulding of injection moulding mode can be adopted in described site 21, also can adopt the mode moulding of printing.Described site 21 does not repeat them here for well known to a person skilled in the art technology.Described reflector plate 1 is positioned at the below of described LGP 2, and the light that described LGP 2 bottom surfaces are spilt reflexes to described LGP 2, improves light utilization.Described scattering sheet 6 is positioned at the top of described LGP 2, and the further DIFFUSION TREATMENT of light with the ejaculation of described LGP 2 exiting surfaces makes this module backlight form uniform surface light source more.The structure of described scattering sheet 6 and material are known technology also, also are not described in detail at this.The exiting surface of described substrate 25 carries out roll extrusion or machine cuts forms some row micro-protuberance structures 22, and these micro-protuberance structure 22 isodensity are arranged.These micro-protuberance structure 22 cross sections can be V-type or polygon.Preferred these micro-protuberance structure 22 cross sections are V-type in the present embodiment, and promptly this micro-protuberance structure 22 is equivalent to form the exiting surface that some parallel triangular prisms are distributed in this substrate, increase brightness so that light optically focused is handled.Has the internal groove 23 that some isodensity are arranged in parallel in the first half of described substrate 25, the direction that is arranged in parallel of this internal groove 23 and the orientation space of micro-protuberance structure 22 are not parallel, so that the light in the LGP 2 is reflected and refract on the micro-protuberance structure 22, reach certain receipts light action.Preferably the orientation of be arranged in parallel direction and the micro-protuberance structure 22 of this internal groove 23 is vertical has mutually reached best receipts light effect for present embodiment.The cross sectional shape of this internal groove 23 also can be V-type or polygon, present embodiment is cross sectional shape and micro-protuberance structure the same of this internal groove 23 preferably, be all V-type, the mean breadth of this V-type is 0.05～3mm, further preferred 0.1mm, the average angle of drift angle is 70 °～120 °, and more preferably 90 °, spacing those skilled in the art of its arrangement are easy to determine according to actual conditions.This internal groove 23 can be made by the technology of body laser inner carving.
LGP in the present embodiment module backlight has internal groove and micro-protuberance structure, with the traditional LGP in the traditional backlight module, the function of brightening piece integrates up and down, keep the function of former module backlight and saved the brightening piece up and down in the traditional backlight module, reduce module backlight cost, simplified the structure of module backlight, reduce the thickness of module backlight.
Embodiment two
Fig. 4 is the module partial structurtes schematic diagram backlight of the utility model embodiment two;
Please refer to Fig. 4, is consistent among the implication of the Reference numeral identical with Reference numeral among the embodiment one and the embodiment one among this figure.The utility model preferred embodiment two is with the difference of embodiment one: incidence surface is made matsurface 24, to solve the firefly effect that exists in the prior art.This matsurface 24 can be the zigzag of rule, also can be other structures, and these other structures have: the some spheroids that go up to distribute of this incidence surface or hemisphere, the matsurface that polish with sand or print other erose projectioies or depression etc.Present embodiment preferably this matsurface is the zigzag of rule.
Embodiment three
Fig. 5 is the back light module unit structure schematic diagram of the utility model embodiment three;
Please refer to Fig. 5, is consistent among the implication of the Reference numeral identical with Reference numeral among the embodiment one and the embodiment one among this figure.The difference of the utility model preferred embodiment three and embodiment one is: incidence surface is made and exiting surface between angle be not equal to 90 degree (be called for short tilt), form trapezoidal, change light reduces light in the incidence angle of the plane of incidence ejaculation, increase the quantity of total reflection light, to increase the amount of light that penetrates from exit facet, increase the light intensity of module backlight.Under the certain situation of light intensity, can reduce the led light source usage quantity, save cost.In order to reach effect preferably, the preferred described incidence surface of present embodiment make and exiting surface between big 90 degree of angle less than 120 degree.
Embodiment four
Fig. 6 is the back light module unit structure schematic diagram of the utility model embodiment four.
Please refer to Fig. 6, is consistent among the implication of the Reference numeral identical with Reference numeral among the embodiment one and the embodiment one among this figure.The utility model preferred embodiment four is on the basis of embodiment one, in conjunction with the embodiments two and the advantage of embodiment three, and be about to incidence surface 26 and make not only coarse but also make inclination.Preferred 110 degree of this angle.Present embodiment has the advantage of above-mentioned three embodiment.
The above only is preferred embodiment of the present utility model, does not therefore limit rights protection scope of the present utility model, and all equivalent transformations that utilizes the utility model to do all drop in the rights protection scope of the present utility model.
Claims (8)
1. LGP, comprise a substrate, described substrate comprise incidence surface, the exiting surface that is connected with incidence surface and with the exiting surface opposed bottom surface, it is characterized in that, described exiting surface is provided with the micro-protuberance structure that some isodensity are arranged in parallel, be provided with the internal groove that some isodensity are arranged in parallel in the first half of described substrate, the direction that is arranged in parallel of this internal groove and the director space that is arranged in parallel of micro-protuberance structure are not parallel.
2. LGP as claimed in claim 1, the direction that is arranged in parallel of described this internal groove is vertical mutually with the director space that is arranged in parallel of micro-protuberance structure.
3. LGP as claimed in claim 1 is characterized in that the cross sectional shape of microprotrusion structure and internal groove is V-type.
4. LGP as claimed in claim 3 is characterized in that, the mean breadth of V-type is 0.05～3mm, and the average angle of drift angle is 70 °～120 °.
5. LGP as claimed in claim 1 is characterized in that, described incidence surface is a matsurface.
6. LGP as claimed in claim 1 is characterized in that, big 90 degree of the angle between described incidence surface and the exiting surface are less than 120 degree.
7. module backlight, comprise light source and framework, it is characterized in that this module backlight also comprises as each described LGP of claim 1 to 6, the transmission direction of the described light source emitted light of described light-guide plate guides, described framework is contained in described LGP and described light source wherein.
8. module backlight as claimed in claim 7 is characterized in that, described light source is LED spot light or LED line source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202620395U CN201606821U (en) | 2009-12-26 | 2009-12-26 | Light guide plate and back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202620395U CN201606821U (en) | 2009-12-26 | 2009-12-26 | Light guide plate and back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606821U true CN201606821U (en) | 2010-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202620395U Expired - Lifetime CN201606821U (en) | 2009-12-26 | 2009-12-26 | Light guide plate and back light module |
Country Status (1)
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| CN (1) | CN201606821U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393545A (en) * | 2011-12-09 | 2012-03-28 | 深圳市华星光电技术有限公司 | Light guide plate, and backlight unit and liquid crystal display apparatus possessing the same |
| CN102401932A (en) * | 2011-11-08 | 2012-04-04 | 深圳市嘉泰宏实业有限公司 | Light guide plate structure and manufacturing method thereof |
| CN102540319A (en) * | 2012-01-04 | 2012-07-04 | 中国科学院深圳先进技术研究院 | Light guide plate and LED (Light-emitting Diode) lamp |
| CN103376495A (en) * | 2012-04-18 | 2013-10-30 | 昆山康佳电子有限公司 | Light guide plate and backlight module |
| CN105116477A (en) * | 2015-09-28 | 2015-12-02 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight module and display device |
| WO2020063569A1 (en) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | Diffusion plate and lamp having diffusion plate |
-
2009
- 2009-12-26 CN CN2009202620395U patent/CN201606821U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401932A (en) * | 2011-11-08 | 2012-04-04 | 深圳市嘉泰宏实业有限公司 | Light guide plate structure and manufacturing method thereof |
| CN102393545A (en) * | 2011-12-09 | 2012-03-28 | 深圳市华星光电技术有限公司 | Light guide plate, and backlight unit and liquid crystal display apparatus possessing the same |
| CN102540319A (en) * | 2012-01-04 | 2012-07-04 | 中国科学院深圳先进技术研究院 | Light guide plate and LED (Light-emitting Diode) lamp |
| CN103376495A (en) * | 2012-04-18 | 2013-10-30 | 昆山康佳电子有限公司 | Light guide plate and backlight module |
| CN105116477A (en) * | 2015-09-28 | 2015-12-02 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight module and display device |
| WO2017054382A1 (en) * | 2015-09-28 | 2017-04-06 | 京东方科技集团股份有限公司 | Optical element, light guide plate, prism, backlight unit and display apparatus |
| US10132966B2 (en) | 2015-09-28 | 2018-11-20 | Boe Technology Group Co., Ltd. | Optical element including strip-shaped prisms, light guide plate, prism, backlight module and display device |
| WO2020063569A1 (en) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | Diffusion plate and lamp having diffusion plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |
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| CX01 | Expiry of patent term |