CN100399565C - Light-emitting diode module - Google Patents
Light-emitting diode module Download PDFInfo
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- CN100399565C CN100399565C CNB2006101061578A CN200610106157A CN100399565C CN 100399565 C CN100399565 C CN 100399565C CN B2006101061578 A CNB2006101061578 A CN B2006101061578A CN 200610106157 A CN200610106157 A CN 200610106157A CN 100399565 C CN100399565 C CN 100399565C
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- light
- emitting diode
- lens
- led
- module
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Abstract
The present invention discloses light emitting diode module. It includes base material, plurality of light emitting diode and plurality of lens, wherein said light emitting diode located on said base material surface, said lens set on said base material and covering said light emitting diode, each upper surface of lens all having curved face respectively corresponded to each light emitting diode.
Description
Technical field
The present invention relates to a kind of light-emitting diode (LED) module.
Background technology
Along with information industry is flourishing day by day, digitization tools such as mobile phone, digital camera, digital code camera, mobile computer, desktop PC develop towards direction more convenient, multi-functional and attractive in appearance invariably, and in recent years, the display screen of most of digitization tools is a main flow with display panels (LCD panel) all.Yet, because display panels itself does not have luminous function, so below display panels, must provide a backlight module (backlight unit) to provide liquid crystal panel required area source, make LCD can reach luminous voluntarily display effect.Simultaneously, by this backlight module, liquid crystal panel can obtain enough brightness and contrast, and then reaches the function of demonstration.
Generally speaking, backlight module generally is divided into two kinds of side incident type and straight-down negatives usually.Wherein, the backlight module of side incident type need be converted to the required area source of liquid crystal panel with point-source of light or line source by light guide plate (light guide plate), its cost is low, so be widely used in the undersized liquid crystal panel, the backlight module of straight-down negative then can dispose light guide plate, therefore the area source of the required even and high briliancy of liquid crystal panel just can directly be provided, have the liquid crystal panel of the large scale of high requirements or high brightness etc. to adopt direct type backlight module usually to backlight module.In addition, the area source that present direct type backlight module is provided constitutes in two ways, one of them is by many line sources, as cathode fluorescent tube (cold cathodefluorescent lamp, CCFL) or external electrode fluorescent lamp pipe (external electrode fluorescentlamp, EEFL) be arranged in parallel and form, another kind of mode is then by the point-source of light of densification, arranges as a plurality of light-emitting diodes (light emitting diode) to form.Because light-emitting diode has high color saturation, not mercurous, high life, low temperature and can adjust characteristic such as colour temperature by drive current, therefore is widely used in the backlight module gradually.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of existing light-emitting diode (LED) module 10.As shown in Figure 1, light-emitting diode (LED) module 10 comprises base material 12, is arranged at a plurality of light-emitting diodes 14 on the base material 12, the lead frame 16 that connects light-emitting diode 14, a plurality of metal pins (figure does not show) that are electrically connected light-emitting diode 14 and lead frame 16 and the lens 18 that are covered in light-emitting diode 14 surfaces.Wherein, base material 12 can be enclosed seat, the formed carrier of material (carrier) such as PPA resin for example, and the group formed of light-emitting diode 14 optional free red light emitting diodes, green LED, blue LED, white light-emitting diode or other colorful light-emitting diode.
Secondly, the lens 18 that are covered on the light-emitting diode 14 are made up of epoxy resin (epoxy) or silica resin (silicone), and lens 18 have curved surface 20 usually, as shown in FIG..Generally speaking, the light of light-emitting diode (LED) module 10 is produced by light-emitting diode 14 earlier, sees through lens 18 then and refracts light into external environment.Yet, because light-emitting diode (LED) module 10 adopts multiple light courcess to share the design of single curved surface, therefore when the light refraction that is produced when the light-emitting diode 14 of different qualities is to the curved surface 20 of lens 18, will cause the phenomenon of Energy distribution inequality, and then influence the mixed light efficient of light-emitting diode (LED) module 10.
Summary of the invention
Therefore main purpose of the present invention is for providing a kind of light-emitting diode (LED) module, to improve the problem that existing light-emitting diode (LED) module causes light to disperse because of the design of adopting multiple light courcess to share identical curved surface.
The present invention discloses a kind of light-emitting diode (LED) module, it comprises base material, a plurality of light-emitting diode and a plurality of lens.Wherein, described light-emitting diode is located at this substrate surface, and described lens then are arranged on this base material and cover described light-emitting diode, and respectively the upper surface of these lens all has the corresponding respectively respectively curved surface of this light-emitting diode.
The present invention forms corresponding lens on each light-emitting diode, utilize the angle of the curvature changing of curved surface of each lens and inverted cone corner structure to change the shear-face angle of controlling by low-angle emitted light of light-emitting diode own and sidewall then and control the light that is sent by the wide-angle of light-emitting diode own, and then make high angle scattered light reach the effect of optically focused or diverging light.Simultaneously, the present invention can effectively disperse the stronger light of light-emitting diode energy that forward sends by the angle variation of inverted cone corner structure on each lens again, and then the bright spot phenomenon of avoiding lens central authorities to be caused because of the energy undue concentration.In other words, by curved surface, sloped sidewall and the inverted cone corner structure of adjusting each lens, leaded light mechanism of the present invention can effectively extend light-emitting diode (LED) module angle Energy distribution (candela distribution), widen the angle of visibility of light-emitting diode and under the suitable condition of the uniformity, significantly increase spacing between the light-emitting diode, and then reduce the usage quantity and the manufacturing cost of light-emitting diode.
Description of drawings
Fig. 1 is the schematic diagram of existing light-emitting diode (LED) module.
Fig. 2 is the vertical view of the light-emitting diode (LED) module of the preferred embodiment of the present invention.
Fig. 3 is the end view of the light-emitting diode (LED) module of Fig. 2.
Fig. 4 is the schematic diagram of the light-emitting diode (LED) module of another embodiment of the present invention.
Fig. 5 is the schematic diagram of the light-emitting diode (LED) module of another embodiment of the present invention.
The simple symbol explanation
10 light-emitting diode (LED) modules, 12 base materials
14 light-emitting diodes, 16 lead frames
18 lens, 20 curved surfaces
30 light-emitting diode (LED) modules, 32 base materials
34 light-emitting diodes, 36 lead frames
38 lens, 40 curved surfaces
42 grooves, 50 light-emitting diode (LED) modules
52 base materials, 54 light-emitting diodes
56 lead frames, 58 lens
60 curved surfaces, 62 grooves
64 sloped sidewalls, 80 light-emitting diode (LED) modules
82 base materials, 84 light-emitting diodes
86 lead frames, 88 lens
90 curved surfaces, 92 grooves
94 sloped sidewalls, 96 vertical sidewalls
Embodiment
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the vertical view of the light-emitting diode (LED) module 30 of the preferred embodiment of the present invention, and Fig. 3 is the end view of the light-emitting diode (LED) module 30 of Fig. 2.As shown in Figure 2, light-emitting diode (LED) module 30 is made up of four light-emitting diodes 34 that are the arrayed mode, and the group formed of light-emitting diode 34 optional free red light emitting diodes, green LED, blue LED, white light-emitting diode or other colorful light-emitting diode.Yet, being not limited to this arrangement mode, the present invention can dispose the light-emitting diode 34 of varying number, color and arrangement mode again according to the demand of product, and this all should belong to covering scope of the present invention.
As shown in Figure 3, light-emitting diode (LED) module 30 comprises base material 32, is arranged at a plurality of light-emitting diodes 34 on the base material 32, the lead frame 36 that connects light-emitting diode 34, a plurality of metal pins (figure does not show) that are electrically connected light-emitting diode 34 and lead frame 36 and a plurality of lens 38 that are covered in light-emitting diode 34 surfaces.Wherein, base material 32 can be heating panel, conductive plate, circuit board or by formed carriers of material (carrier) such as PPA resins.
Secondly, the lens 38 that are covered on the light-emitting diode 34 are made up of epoxy resin (epoxy) or silica resin translucent materials such as (silicone), and each lens 38 all can have the curved surface 40 of epirelief or recessed curved surface (figure does not show) respectively.According to a preferred embodiment of the invention, each curved surface 40 also can have identical or different radius of curvature (curvature radius) respectively, and the height of each lens 38 is less than the radius of curvature of each curved surface 40.For instance, be 5.6 centimetres as the length of side of light-emitting diode (LED) module 30, and the radius of curvature of each curved surface 40 is 20 centimetres, then the height of lens 38 is 1.2 centimetres.
In addition, the top surface of each lens 38 all can have groove 42 structures in addition, is arranged on each curved surface 40 and corresponding each light-emitting diode 34.In the present embodiment, each groove 42 is rounding cone angle (reversedcone) structure, and the vertex angle theta of rounding cone angle is between 150 ° to 180 °.Yet, being not limited to shown in the present embodiment, each rounding cone angle can be the coning angle with different angles again, and this all should belong to covering scope of the present invention.
As shown in FIG., present embodiment is covered in a plurality of lens 38 on the light-emitting diode 34, and curved surface 40 respectively corresponding each light-emitting diode 34 of each lens 38.Yet, be not limited to this configuration mode, the present invention can directly cover on a plurality of light-emitting diodes 34 again by the combined type lens that a plurality of sub-lens constituted (figure does not show), and makes corresponding each light-emitting diode of each sub-lens of these combined type lens, to reach identical effect.
Sidewall shear-face angle that it should be noted that each lens among the present invention can will be done optimization astigmatism or optically focused control according to institute's energy requirement and angular distribution than high angle scattered light at the light-emitting diode of different qualities.Simultaneously, the curved surface of each lens surface then can be made optimized design at different light-emitting diodes with the rounding cone angle, also is about to low-angle light and does the optimized control of dispersing according to the distribution of institute's energy requirement and angle.In other words, the present invention can cooperate the bright spot phenomenon that formed inverted cone corner structure avoids lens central authorities to be caused because of the energy undue concentration on the curvature changing of each light-emitting diode top curved surface and each curved surface, and can be, and then effectively expand the angle of visibility of light-emitting diode by this leaded light mechanism angle Energy distribution (candela distribution) of light-emitting diode that extends.
Please refer to Fig. 4, Fig. 4 is the schematic diagram of the light-emitting diode (LED) module 50 of another embodiment of the present invention.As shown in Figure 4, light-emitting diode (LED) module 50 comprises base material 52, is arranged at a plurality of light-emitting diodes 54 on the base material 52, the lead frame 56 that connects light-emitting diode 54, a plurality of metal pins (figure does not show) that are electrically connected light-emitting diode 54 and lead frame 56 and a plurality of lens 58 that are covered in light-emitting diode 54 surfaces.Wherein, base material 52 can be heating panel, conductive plate, circuit board or by formed carriers of material (carrier) such as PPA resins, and the group formed of light-emitting diode 54 optional free red light emitting diodes, green LED, blue LED, white light-emitting diode or other colorful light-emitting diode.
Secondly, the lens 58 that are covered on the light-emitting diode 54 are made up of translucent materials such as epoxy resin or silica resins, and each lens 58 all can have the curved surface 60 of epirelief or recessed curved surface (scheming not show).According to a preferred embodiment of the invention, each curved surface 60 also can have identical or different radius of curvature, and the height of each lens 58 is less than the radius of curvature of each curved surface 60.
In addition, the top surface of each lens 58 all has groove 62, is arranged on each curved surface 60 and respectively corresponding each light-emitting diode 54.In the present embodiment, each groove 62 is the inverted cone corner structure, and the vertex angle theta of rounding cone angle is between 150 ° to 180 °.Yet, being not limited to shown in the present embodiment, each rounding cone angle can be the coning angle with different angles again, and this all should belong to covering scope of the present invention.
As previous embodiment, present embodiment is covered in a plurality of lens 58 on the light-emitting diode 54, and each lens 58 respectively corresponding each light-emitting diode 54.Yet, be not limited to this configuration mode, the present invention can directly cover on a plurality of light-emitting diodes 54 again by the combined type lens that a plurality of sub-lens constituted (figure does not show), and makes corresponding each light-emitting diode of each sub-lens of these combined type lens, to reach identical effect.
Compare with previous embodiment, each lens 58 also comprises at least one sloped sidewall 64 respectively, and the angle on each sloped sidewall 64 and base material 52 surfaces
Between 30 ° to 90 °.Therefore, present embodiment adjusts required energy and angular distribution at the light-emitting diode 54 of different qualities with the inverted cone corner structure except the curved surface 60 that can utilize each lens 58, again can be simultaneously do the tilt variation of different angles at the light-emitting diode 54 of corresponding different qualities, so that high angle scattered light is done optimized optically focused or dispersed control according to institute's energy requirement and angular distribution by each sloped sidewall 64.
Please refer to Fig. 5, Fig. 5 is the schematic diagram of the light-emitting diode (LED) module 80 of further embodiment of this invention.As shown in Figure 5, light-emitting diode (LED) module 80 comprises base material 82, is arranged at a plurality of light-emitting diodes 84 on the base material 82, the lead frame 86 that connects light-emitting diode 84, a plurality of metal pins (figure does not show) that are electrically connected light-emitting diode 84 and lead frame 86 and a plurality of lens 88 that are covered in light-emitting diode 84 surfaces.Wherein, base material 82 can be heating panel, conductive plate, circuit board or by formed carriers of material such as PPA resins, and the group formed of light-emitting diode 84 optional free red light emitting diodes, green LED, blue LED, white light-emitting diode or other colorful light-emitting diode.
Secondly, the lens 88 that are covered on the light-emitting diode 84 are made up of translucent materials such as epoxy resin or silica resins, and each lens 88 all has the curved surface 90 of epirelief or recessed curved surface (scheming not show).According to a preferred embodiment of the invention, each curved surface 90 can have identical or different radius of curvature, and the height of each lens 88 is less than the radius of curvature of each curved surface 90.
In addition, the top surface of each lens 88 all has groove 92, is arranged on each curved surface 90 and corresponding each light-emitting diode 84.In the present embodiment, each groove 92 is the inverted cone corner structure, and the vertex angle theta of rounding cone angle is between 150 ° to 180 °.Yet, being not limited to shown in the present embodiment, each rounding cone angle can be the coning angle with different angles again, and this all should belong to covering scope of the present invention.
As previous embodiment, present embodiment is covered in a plurality of lens 88 on the light-emitting diode 84, and each lens 88 corresponding each light-emitting diode 84.Yet, be not limited to this configuration mode, the present invention can directly cover on a plurality of light-emitting diodes 84 again by the combined type lens that a plurality of sub-lens constituted (figure does not show), and makes corresponding each light-emitting diode of each sub-lens of these combined type lens, to reach identical effect.
Compare with previous embodiment, each lens 88 of present embodiment are except having at least one sloped sidewall 94, also comprise at least one side wall construction, for example vertical sidewall 96 connects the top surface of sloped sidewall 94 and lens 88, and the angle on each sloped sidewall 94 and base material 82 surfaces
Between 20 ° to 90 °.Therefore, present embodiment adjusts required energy and angular distribution at the light-emitting diode 84 of different qualities with the inverted cone corner structure except the curved surface 90 that can utilize each lens 88, again can be simultaneously do the tilt variation of different angles at the light-emitting diode 84 of different qualities, so that high angle scattered light is done optimized optically focused or dispersed control according to institute's energy requirement and angular distribution by each sloped sidewall 94 and vertical sidewall 96.
In sum, compared to existing light-emitting diode (LED) module, the present invention forms the lens of a correspondence on each light-emitting diode, utilize the curvature changing of curved surface of each lens and the shear-face angle of sidewall to control the light that is sent by the wide-angle of light-emitting diode own then, and then make high angle scattered light reach the effect of optically focused.Simultaneously, the present invention can effectively disperse the stronger light of light-emitting diode energy that forward sends by the angle variation of inverted cone corner structure on each lens again, and then the bright spot phenomenon of avoiding lens central authorities to be caused because of the energy undue concentration.In other words, by curved surface, sloped sidewall and the inverted cone corner structure of adjusting each lens, leaded light mechanism of the present invention can effectively extend light-emitting diode (LED) module angle Energy distribution (candela distribution), widen the angle of visibility of light-emitting diode and under the suitable condition of the uniformity, significantly increase spacing between the light-emitting diode, and then reduce the usage quantity and the manufacturing cost of light-emitting diode.In addition, the curved surface of each light-emitting diode top and the angle of rounding cone angle can be adjusted at the light-emitting diode of different qualities again, and then significantly increase its usability.Simultaneously, because each lens is designed at the characteristic of each light-emitting diode, but not adopt existing a plurality of light-emitting diodes to share the mode of single lens, so the present invention can cooperate combining closely of each lens to make each light-emitting diode reach Energy distribution and preferred color mixed light performance even and symmetry again.
The above only is the preferred embodiments of the present invention, and all equivalent variations and modifications of doing according to claim of the present invention all should belong to covering scope of the present invention.
Claims (10)
1. light-emitting diode (LED) module comprises:
Base material;
A plurality of light-emitting diodes are located at described substrate surface; And
A plurality of lens are arranged on the described base material with combining closely each other and cover described light-emitting diode, and the upper surface of each described lens all has the curved surface of respectively corresponding each described light-emitting diode.
2. light-emitting diode (LED) module as claimed in claim 1, wherein said base material is selected from heating panel, conductive plate and circuit board.
3. light-emitting diode (LED) module as claimed in claim 1, wherein the height of each described lens is less than the radius of curvature of each described curved surface.
4. light-emitting diode (LED) module as claimed in claim 1, wherein each described curved surface has identical radius of curvature.
5. light-emitting diode (LED) module as claimed in claim 1, wherein each described curved surface has radius of curvature inequality.
6. light-emitting diode (LED) module as claimed in claim 1, wherein each described lens all has groove, and described groove is located on each described curved surface and corresponding each described light-emitting diode.
7. light-emitting diode (LED) module as claimed in claim 6, wherein each described groove is the inverted cone corner structure, and the drift angle of described rounding cone angle is between 150 ° to 180 °.
8. light-emitting diode (LED) module as claimed in claim 1, wherein each described lens has at least one sloped sidewall respectively in addition, and the angle of each described sloped sidewall and described substrate surface is between 20 ° to 90 °.
9. light-emitting diode (LED) module as claimed in claim 1, wherein said curved surface are upper convex surface.
10. light-emitting diode (LED) module as claimed in claim 1, wherein said curved surface is following concave curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101061578A CN100399565C (en) | 2006-07-20 | 2006-07-20 | Light-emitting diode module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101061578A CN100399565C (en) | 2006-07-20 | 2006-07-20 | Light-emitting diode module |
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| Publication Number | Publication Date |
|---|---|
| CN1889263A CN1889263A (en) | 2007-01-03 |
| CN100399565C true CN100399565C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101061578A Expired - Fee Related CN100399565C (en) | 2006-07-20 | 2006-07-20 | Light-emitting diode module |
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| CN (1) | CN100399565C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571259B (en) * | 2008-04-29 | 2011-04-27 | 浙江皓玥科技有限公司 | Led lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10173268A (en) * | 1996-12-13 | 1998-06-26 | Matsushita Electric Ind Co Ltd | Optical fiber amplifying device |
| CN1381904A (en) * | 2001-04-18 | 2002-11-27 | 银河光电有限公司 | Package of LED chip and its light-gathering lens |
| US6733711B2 (en) * | 2000-09-01 | 2004-05-11 | General Electric Company | Plastic packaging of LED arrays |
| US20060138437A1 (en) * | 2004-12-29 | 2006-06-29 | Tien-Fu Huang | Lens and LED using the lens to achieve homogeneous illumination |
-
2006
- 2006-07-20 CN CNB2006101061578A patent/CN100399565C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10173268A (en) * | 1996-12-13 | 1998-06-26 | Matsushita Electric Ind Co Ltd | Optical fiber amplifying device |
| US6733711B2 (en) * | 2000-09-01 | 2004-05-11 | General Electric Company | Plastic packaging of LED arrays |
| CN1381904A (en) * | 2001-04-18 | 2002-11-27 | 银河光电有限公司 | Package of LED chip and its light-gathering lens |
| US20060138437A1 (en) * | 2004-12-29 | 2006-06-29 | Tien-Fu Huang | Lens and LED using the lens to achieve homogeneous illumination |
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| Publication number | Publication date |
|---|---|
| CN1889263A (en) | 2007-01-03 |
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Granted publication date: 20080702 Termination date: 20200720 |