CN102109129A - Annular light guide structure and backlight module using same - Google Patents
Annular light guide structure and backlight module using same Download PDFInfo
- Publication number
- CN102109129A CN102109129A CN200910312458XA CN200910312458A CN102109129A CN 102109129 A CN102109129 A CN 102109129A CN 200910312458X A CN200910312458X A CN 200910312458XA CN 200910312458 A CN200910312458 A CN 200910312458A CN 102109129 A CN102109129 A CN 102109129A
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- annular
- guide structure
- light guide
- light
- annular surface
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Abstract
The invention discloses a backlight module. The backlight module comprises an annular light guide structure and a light source, wherein the annular light guide structure comprises an inner side face, a first annular surface and a second annular surface; the first annular surface is connected with the inner side face; the second annular surface is connected with the inner side face and is opposite to the first annular surface; a light source is arranged close to the first annular surface; the first annular surface of the annular light guide structure is provided with a plurality of first grooves which are extended along the light guide structure in the radial direction; and the second annular surface of the annular light guide structure is provided with a second groove which is extended along the light guide structure in the radial direction and corresponds to the light source. The second annular surface of the annular light guide structure is provided with the second groove corresponding to the light source, so that light is reflected into the annular light guide structure in halves. Thus, the annular light guide structure only requires a small number of light sources and is lower in cost. The first annular surface is provided with the plurality of first grooves, so that the light is reflected in a diffusing way, and the emitted light is more uniform.
Description
Technical field
The present invention relates to a kind of annular light guide structure and adopt the module backlight of this annular light guide structure.
Background technology
Be typically provided with module backlight on the electronic installation such as instrument board, keyboard, this module backlight is used for the annular light-emitting zone of electronic installation is illuminated.
A kind of module backlight, it comprises annular light guide structure and a plurality of light emitting diode.This annular light guide structure comprises annular exiting surface and the annular incidence surface relative with this annular exiting surface.These a plurality of light emitting diodes are located at this annular incidence surface.Light, penetrates from annular exiting surface after repeatedly reflecting in annular light guide structure from this annular incidence surface incident.
Yet the position near light emitting diode on the annular exiting surface of the annular light guide structure of above-mentioned module backlight is brighter, and is dim away from the position of light emitting diode, causes the luminance nonuniformity of annular exiting surface even.And above-mentioned module backlight needs a plurality of light emitting diodes, and its cost is higher.
Summary of the invention
In view of above-mentioned condition, the module backlight that is necessary to provide the more even and lower-cost annular light guide structure of a kind of bright dipping and adopts this annular light guide structure.
A kind of annular light guide structure, it comprises first annular surface and second annular surface relative with first annular surface.The annular light guide structure is formed with a plurality of first grooves that radially extend along light guide structure on first annular surface, annular light guide structure is formed with one second groove on second annular surface.
A kind of module backlight, it comprises an annular light guide structure and a light source.The annular light guide structure comprises first annular surface and second annular surface relative with first annular surface.The light source and second annular surface are oppositely arranged.A plurality of first grooves of on first annular surface, being formed with of annular light guide structure, annular light guide structure on second annular surface, be formed with along light guide structure radially extend and with corresponding one second groove of light source.
Corresponding light source is formed with second groove on second annular surface of above-mentioned annular light guide structure, and light is reflected in annular light guide structure with being divided into two.Therefore, above-mentioned annular light guide structure needs the minority light source to get final product, and cost is lower.And, be formed with a plurality of first grooves on first annular surface, light is reflected diffusely, thereby make emergent ray more even.
Description of drawings
Fig. 1 is the three-dimensional exploded view of module backlight of the present invention.
Fig. 2 is the three-dimensional exploded view of the other direction of module backlight shown in Figure 1.
Fig. 3 is the schematic diagram of the annular light guide structure of module backlight shown in Figure 1.
Fig. 4 is the partial assembly drawing of module backlight shown in Figure 1.
The main element symbol description
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20 |
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30 |
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40 |
| The |
50 |
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60 |
| The annular |
70 |
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71 |
| First |
72 |
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723 |
| Light in |
725 |
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726 |
| Second |
73 |
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731 |
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75 |
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100 |
The specific embodiment
Be described in further detail below in conjunction with the module backlight of drawings and the embodiments annular light guide structure of the present invention and employing annular light guide structure.
See also Fig. 1 to Fig. 2, the module backlight 100 of better embodiment of the present invention comprises a light transmission piece 20, one first reflector plate 30, one second reflector plate 40, one the 3rd reflector plate 50, a light source 60 and an annular light guide structure 70.Light transmission piece 20, first reflector plate 30, second reflector plate 40 and the 3rd reflector plate 50 are formed the receiving space (not indicating) of a sealing, so that annular light guide structure 70 and light source 60 are closed in it.
The 3rd reflector plate 50 is for being roughly the laminated structure of annular, and outer peripheral edges link to each other with the periphery of first reflector plate 30 and second reflector plate 40 respectively in it.
See also Fig. 3, annular light guide structure 70 is an annular, and its inside radius is R1, and outer radius is R2, and thickness is d.Annular light guide structure 70 comprises medial surface 71, first annular surface 72, second annular surface 73 and lateral surface 75.Medial surface 71 is parallel relative with lateral surface 75, and first annular surface 72 is parallel relative with second annular surface 73.Medial surface 71 and lateral surface 75 all link to each other with first annular surface 72 and second annular surface 73.
Be formed with a plurality of first grooves 723 that radially extend on first annular surface 72, wherein leave the light in part 725 and the spacer portion 726 of fan annular along annular light guide structure 70.Light in part 725 and spacer portion 726 are with respect to the center symmetry of first annular surface 72.A plurality of first groove, 723 spaced sets.From light in part 725 along these first annular surface, 72 peripheries to the direction of spacer portion 726, the length of these a plurality of first grooves 723 increases progressively.The angle of this light in part 725 is a1.The width of first groove 723 is b1.Be formed with one second groove 731 that radially extends corresponding to light in part 725 on second annular surface 73 along annular light guide structure 70.The degree of depth of second groove 731 is h1, and drift angle is a3.First groove 723 and second groove 731 be shaped as V-type, semi-circular and semiellipse type one of them.
Specifically in the present embodiment, light source 60 is a light emitting diode, and first groove 723 and second groove 731 are the V-type groove, R1 is 15 millimeters, R2 is 10 millimeters, and d is 5 millimeters, and the number of first groove 723 is 60, the increment value of the length of a plurality of first grooves 723 is 0.11 millimeter, first groove, 723 drift angles are 54.5 degree, and a1 is 10 degree, and a3 is 50 degree, b1 is 0.35 millimeter, and h1 is 4.5 millimeters.Annular light guide structure 70 can be made by polymethyl methacrylate (PMMA) resin of acryl.The refractive index of annular light guide structure 70 is 1.489.
Please consult Fig. 1 and Fig. 4 simultaneously, when assembling module 100 backlight, at first, the interior outer peripheral edges of light transmission piece 20 are linked to each other with the periphery of first reflector plate 30 and second reflector plate 40 respectively, have the receiving space of opening with formation.Then, annular light guide structure 70 is positioned in this receiving space.Then, light source 60 is positioned over the position corresponding with the light in part 725 of second annular surface 73 of annular light guide structure 70.At last, the interior outer peripheral edges of the 3rd reflector plate 50 are linked to each other with the periphery of first reflector plate 30 and second reflector plate 40 respectively, with complete closed annular light guide structure 70.
Light penetrates from light source 60, inject from first annular surface 72 of annular light guide structure 70, after being reflected by the side ancient piece of jade, round, flat and with a hole in its centre of second groove 731 of second annular surface 73 with being divided into two, repeatedly reflection in annular light guide structure 70, after wherein most of light is reflected diffusely by a plurality of first grooves 723, directly penetrate from second annular surface 73.Another part light penetrates from first annular surface 72, two sides (indicating) of annular light guide structure 70, after first reflector plate 30, second reflector plate 40 and 50 reflections of the 3rd reflector plate, inject once more in the annular light guide structure 70, until penetrating from second annular surface 73.
Corresponding light source 60 is formed with second groove 731 on second annular surface 73 of above-mentioned annular light guide structure 70, and light is reflected in annular light guide structure 70 with being divided into two.Therefore, above-mentioned annular light guide structure 70 needs minority light source 60 to get final product, and its cost is lower.And, be formed with a plurality of first grooves 723 on first annular surface 72, light is reflected diffusely, thereby make emergent ray more even.
Further, from light in part 725 along these first annular surface, 72 peripheries to the direction of spacer portion 726, the length of a plurality of first grooves 723 increases progressively, and light is spread more equably, thereby makes that the briliancy of second annular surface 73 is more even.
Annular light guide structure 70 can be by the method manufacturing of ejection formation, and this manufacture method is as follows:
(1) adopts diamond cutting (Diamond Turning) method on die, to process and reach and second groove, 731 corresponding one second V-type projectioies, and this die is put on the die holder with a plurality of first groove, 723 corresponding a plurality of first V-type projectioies.
(2) utilize this die holder and the die ejection formation should annular light guide structure 70.
Be appreciated that annular light guide structure 70 is not limited to circle, also can be the sub-circular structure, for example ellipse etc.
In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.
Claims (10)
1. module backlight, it comprises annular light guide structure and light source, this annular light guide structure comprises medial surface, first annular surface that links to each other with this medial surface reaches and links to each other and second annular surface relative with this first annular surface with this medial surface, this light source is near this first annular surface setting, it is characterized in that: this annular light guide structure is formed with a plurality of first grooves that radially extend along this light guide structure on first annular surface, this annular light guide structure on this second annular surface, be formed with along this light guide structure radially extend and with corresponding one second groove of this light source.
2. module backlight as claimed in claim 1, it is characterized in that: be formed with light in part on this first annular surface, these a plurality of first grooves are arranged at this light in part both sides, and this second groove and this light in part are oppositely arranged, and the light that this light source sends is injected in this annular light guide structure from this light in part.
3. module backlight as claimed in claim 2 is characterized in that: also form spacer portion on this first annular surface, this spacer portion and this light in part are with respect to this first annular surface center symmetry.
4. module backlight as claimed in claim 3 is characterized in that: these a plurality of first groove spaced sets, and from light in part along this first annular surface periphery to the direction of this spacer portion, the length of these a plurality of first grooves increases progressively.
5. annular light guide structure, it comprises medial surface, first annular surface that links to each other with this medial surface and links to each other and second annular surface relative with this first annular surface with this medial surface, it is characterized in that: this annular light guide structure is formed with a plurality of first grooves that radially extend along this light guide structure on this first annular surface, and this annular light guide structure is formed with one second groove that radially extends along this light guide structure on this second annular surface.
6. annular light guide structure as claimed in claim 5 is characterized in that: be formed with light in part on this first annular surface, these a plurality of first grooves are positioned at the both sides of this light in part, and this second groove and this light in part are oppositely arranged.
7. annular light guide structure as claimed in claim 6 is characterized in that: also be formed with spacer portion on this first annular surface, this spacer portion and this light in part are with respect to this first annular surface center symmetry.
8. annular light guide structure as claimed in claim 7 is characterized in that: these a plurality of first groove spaced sets, and from light in part along this first annular surface periphery to the direction of this spacer portion, the length of these a plurality of first grooves increases progressively.
9. annular light guide structure as claimed in claim 8 is characterized in that: the length increment value of these a plurality of first grooves is 0.11 millimeter, and this annular light guide structure is circular, and its inside radius is 10 millimeters, and outer radius is 15 millimeters, and thickness is 5 millimeters.
10. as claim 5 a described annular light guide structure, it is characterized in that: first groove be shaped as V-type, semi-circular and semiellipse type one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312458 CN102109129B (en) | 2009-12-29 | 2009-12-29 | Annular light guide structure and backlight module using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312458 CN102109129B (en) | 2009-12-29 | 2009-12-29 | Annular light guide structure and backlight module using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102109129A true CN102109129A (en) | 2011-06-29 |
| CN102109129B CN102109129B (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910312458 Expired - Fee Related CN102109129B (en) | 2009-12-29 | 2009-12-29 | Annular light guide structure and backlight module using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN102109129B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105556203A (en) * | 2013-09-18 | 2016-05-04 | 株式会社利富高 | Illumination device |
| CN107390431A (en) * | 2017-08-17 | 2017-11-24 | 信利半导体有限公司 | A kind of backlight module and liquid crystal display die set |
| CN108957621A (en) * | 2018-09-12 | 2018-12-07 | 东莞通华液晶有限公司 | A kind of annular light guide plate and automobile instrument mould group |
| CN110388598A (en) * | 2019-07-31 | 2019-10-29 | 富晟亿美汽车光电零部件(长春)有限公司 | Interior trim atmosphere lamp assembly |
| CN111557540A (en) * | 2020-03-12 | 2020-08-21 | 橙景国际有限公司 | Cosmetic mirror with holding structure |
| CN111594776A (en) * | 2020-03-12 | 2020-08-28 | 橙景国际有限公司 | Be applied to light structure of vanity mirror |
| CN111759073A (en) * | 2012-03-08 | 2020-10-13 | 新璞修人有限公司 | Cosmetic mirror |
| CN114063207A (en) * | 2021-10-28 | 2022-02-18 | 惠州雷士光电科技有限公司 | Light guide piece, light guide system and lamp |
| CN114063207B (en) * | 2021-10-28 | 2024-05-03 | 惠州雷士光电科技有限公司 | Light guide piece, light guide system and lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030026106A1 (en) * | 2001-08-01 | 2003-02-06 | Ulrich Knaack | Lamp for vehicle |
| US6619829B1 (en) * | 2002-11-05 | 2003-09-16 | Shih Ling Chen | Lighting device for vehicle |
| US6641295B1 (en) * | 2002-05-24 | 2003-11-04 | Wendell Ng-Sell-Quan | Fog light device |
| CN101451682A (en) * | 2007-12-06 | 2009-06-10 | 富士迈半导体精密工业（上海）有限公司 | Ring lighting device |
-
2009
- 2009-12-29 CN CN 200910312458 patent/CN102109129B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030026106A1 (en) * | 2001-08-01 | 2003-02-06 | Ulrich Knaack | Lamp for vehicle |
| US6641295B1 (en) * | 2002-05-24 | 2003-11-04 | Wendell Ng-Sell-Quan | Fog light device |
| US6619829B1 (en) * | 2002-11-05 | 2003-09-16 | Shih Ling Chen | Lighting device for vehicle |
| CN101451682A (en) * | 2007-12-06 | 2009-06-10 | 富士迈半导体精密工业（上海）有限公司 | Ring lighting device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111759073A (en) * | 2012-03-08 | 2020-10-13 | 新璞修人有限公司 | Cosmetic mirror |
| CN105556203B (en) * | 2013-09-18 | 2019-04-02 | 株式会社利富高 | Lighting device |
| US10351056B2 (en) | 2013-09-18 | 2019-07-16 | Nifco Inc. | Illumination device |
| CN105556203A (en) * | 2013-09-18 | 2016-05-04 | 株式会社利富高 | Illumination device |
| CN107390431A (en) * | 2017-08-17 | 2017-11-24 | 信利半导体有限公司 | A kind of backlight module and liquid crystal display die set |
| CN107390431B (en) * | 2017-08-17 | 2024-02-23 | 信利半导体有限公司 | Backlight module and liquid crystal display module |
| CN108957621A (en) * | 2018-09-12 | 2018-12-07 | 东莞通华液晶有限公司 | A kind of annular light guide plate and automobile instrument mould group |
| CN110388598A (en) * | 2019-07-31 | 2019-10-29 | 富晟亿美汽车光电零部件(长春)有限公司 | Interior trim atmosphere lamp assembly |
| CN111557540A (en) * | 2020-03-12 | 2020-08-21 | 橙景国际有限公司 | Cosmetic mirror with holding structure |
| CN111557540B (en) * | 2020-03-12 | 2023-03-24 | 橙景国际有限公司 | Cosmetic mirror with holding structure |
| CN111594776A (en) * | 2020-03-12 | 2020-08-28 | 橙景国际有限公司 | Be applied to light structure of vanity mirror |
| CN114063207A (en) * | 2021-10-28 | 2022-02-18 | 惠州雷士光电科技有限公司 | Light guide piece, light guide system and lamp |
| CN114063207B (en) * | 2021-10-28 | 2024-05-03 | 惠州雷士光电科技有限公司 | Light guide piece, light guide system and lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102109129B (en) | 2013-11-06 |
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Granted publication date: 20131106 Termination date: 20171229 |
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