CN201838627U - Multifunctional LED (light-emitting diode) packaging structure - Google Patents
Multifunctional LED (light-emitting diode) packaging structure Download PDFInfo
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- CN201838627U CN201838627U CN2009202377666U CN200920237766U CN201838627U CN 201838627 U CN201838627 U CN 201838627U CN 2009202377666 U CN2009202377666 U CN 2009202377666U CN 200920237766 U CN200920237766 U CN 200920237766U CN 201838627 U CN201838627 U CN 201838627U
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- encapsulation shell
- encapsulating structure
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Abstract
A multifunctional LED (light-emitting diode) packaging structure comprises an LED chip (2), a packaging tube shell (1), an encapsulating material (4), an optical system, a cooling system, a power driver (9) and a control system (10), wherein the LED chip (2) is positioned in a cavity defined by the packaging tube shell (1) and the optical system, is adhered on the packaging tube shell (1), and wrapped by the encapsulating material (4); and the electrode of the LED chip (2) is connected with a circuit in the packaging tube shell (1). The optical system is arranged on the packaging tube shell (1). The cooling system is arranged below the packaging tube shell (1). The power driver (9) and the control system (10) are arranged on and below the packaging tube shell (1), or integrated with the packaging tube shell (1) or the cooling system. The multifunctional LED packaging structure has the advantages of small volume, high lighting effect, small heat resistance, intelligence, low cost and the like, does not need to be additionally provided with a secondary optical element, a secondary cooling system, a secondary power driver and a secondary control system, and can be directly applied to various lighting occasions.
Description
Technical field
The present invention relates to a kind of new LED encapsulating structure.
Background technology
Large power white light LED is as a kind of emerging light source, owing to have characteristics such as energy-conservation, high reliability, long life, environmental protection, promotes the use of just rapidly at various lighting fields.The dome-type lens are used in traditional LED encapsulation usually, and even now can guarantee higher light-emitting efficiency, yet the uneven often circular light spot of hot spot can not be directly used in the majority of illumination occasion, as road lighting, backlight etc.Usually traditional LED encapsulating structure does not have outside cooling system, therefore when using these LED, must design the cooling system additional with assembling.In addition, power drives and control system are not included in traditional LED encapsulating structure yet, also need careful the selection or design corresponding driving and control circuit when adopting led module to make up illuminator.Therefore traditional LED encapsulating structure can not directly apply to the illumination occasion, need to increase in addition secondary optics element, outside cooling system, suitable driving and control, will certainly increase the volume and the light loss of LED system like this, increase cost, using to the user makes troubles.
United States Patent (USP) (No.6,541,800B2) a kind of traditional LED encapsulating structure has been proposed, in this packing forms, led chip is encapsulated in the lens of dome-type, and the light that causes chip to send can not be controlled accurately and efficiently.
(Application No.11/255 915A1) has proposed a kind of novel package structure that has thermoelectric element (thermal-electric element) to United States Patent (USP).This encapsulating structure can improve the heat-sinking capability of LED, but does not comprise optical element and driving control system.
United States Patent (USP) (No.6,646,491) has proposed the LED light fixture packing forms that a kind of LED of having drives.This LED light fixture encapsulating structure comprises a LED chip for driving and a led chip, this two device all be placed in lead frame above, and simultaneously by transparent casting glue parcel.Although this LED light fixture encapsulating structure can directly be lighted,, still be difficult to be directly used in various illumination occasions if there is not the cooperation of secondary optical system.
United States Patent (USP) (No.7,252,408) has proposed the led array encapsulation of a kind of integrated internal feedback and control.One power circuit is connected with the led chip electrode, the electric current of control led array.In second embodiment, one or more led chips can come control switch by power drives and test circuit, and measure the output of led array light by an optical detector.The optical signalling that is detected can further be used as the light output that a feedback signal is used for controlling led array.Though power drives all is integrated in the LED encapsulation with control in this patent,, also need cooperating of secondary optics element and cooling system if want to be used for illuminator.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of volume is little, light utilization ratio height, cost are low, can provide corresponding light to distribute (hot spot) according to different application scenarios and do not need additionally to increase heat dissipation design, drive the Multifunctional LED encapsulating structure that design and controlling Design just can directly apply to general illumination.
For addressing the above problem, a kind of Multifunctional LED encapsulating structure of the present invention includes led chip, encapsulation shell, Embedding Material, optical system, cooling system, power drives and control.Led chip is positioned at the cavity that is defined by encapsulation shell and optical system, and is fixed on the encapsulation shell, and is wrapped up by Embedding Material; The led chip electrode circuit interior with encapsulating shell is connected.Optical system is placed on the encapsulation shell.Cooling system is placed under the encapsulation shell.Power drives and control are placed on the encapsulation shell or encapsulation shell down or on the cooling system or integrated with encapsulation shell or cooling system.
Described encapsulation shell is made of high thermal conductivity materials, as silicon, and metal, pottery, plastics or composite material, as AlSiC, LTCC-M, DBC, MCPCB etc.The encapsulation shell is a lead frame, or silicon substrate, or metal substrate, or ceramic substrate, or composite substrate, as alloy substrate, or the AlSiC substrate, or the MCPCB substrate, or the MULTILAYER COMPOSITE substrate of above-mentioned these substrates.Described lead frame or MULTILAYER COMPOSITE substrate combine by mechanical structure or glue or packaging plastic or high thermal conductivity materials such as scolder or silver slurry.Described encapsulation shell can comprise a metal column, and metal column is flat-top or cup-shaped.Described led chip can be that single-chip also can be the chip array of arranging with arbitrary form.
Described Embedding Material can be an air, or cohesive material, or nano ceramics, or glass, or fluorescent material and cohesive material mixture, or the mixture of fluorescent material and nano ceramics, or the mixture of glass and fluorescent material, or the graininess of above-mentioned material or stratified mixture.Described phosphor mixture applies with guarantor's type or gravity flow moulding coating method is coated on led chip or the led chip array.Described phosphor mixture adopts away from the method that applies and is packaged in away from the led chip or the place of led chip array.Described cohesive material is a kind of organic or inorganic material that has high transmission rate in 300nm to 800nm scope, as epoxy resin, or silica gel, or the mixture of epoxy resin and silica gel, or the mixture of above-mentioned cohesive material and fluorescent material.
The effect of described optical system is to improve light extraction efficiency, accurately controls LED encapsulating structure emergent light Energy distribution, forms the different shape hot spot in the target area, rectangle for example, or oval, or pillow-like waits and satisfies different lighting demands.Described optical system is the combination of single lens or a plurality of lens.Described lens are made up of basal plane and outer surface.The basal plane of described lens can be a plane or sphere or quadratic surface or continuous free form surface, and the outer surface of described lens can be sphere or quadratic surface or continuous free form surface or the discontinuous curved surface that has a plurality of free form surfaces to be spliced.The basal plane of described lens or outer surface can have one deck to contain the coating of fluorescent material.The outer surface of described lens can have one deck anti-gray coating.The material of described lens is a kind of organic or inorganic materials that have high transmission rate in 300nm to 800nm scope, for example the mixture of polymethacrylates (PMMA) or Merlon (PC) or glass or pottery or nano ceramics or epoxy resin or silica gel or these materials.The ranges of indices of refraction of lens material is 1.3～3.5.The manufacturing process of described lens is injection molding or sintering or accurate the manufacturing.Described lens are fixed by mechanical structure or are bonded on the encapsulation shell by glue or packaging plastic.
Described cooling system is to have the heat sink of plate fin or have the heat sink of pin fin, can include heat pipe in the heat sink structure, fan or vapor chamber.Described heat sink material is copper or aluminium or alloy with high heat conductance.The material adhesive of described encapsulation shell by having high thermal conductivity is on cooling system.
Described power drives is to be placed in encapsulation shell or above the cooling system as an integral device, or is placed in below the encapsulation shell.Power drives is that the combination of sets as a discrete electronic device is formed in encapsulation shell or the cooling system.Power drives provides constant-current driving or constant voltage driving or AC driving.Power drives output current or voltage are adjustable.The circuit arrangement of power drives in the encapsulation shell on or be buried in the encapsulation shell in or with the encapsulation shell integrated.
Described control system is placed in above the encapsulation shell, or is placed in above the cooling system, or is placed in below the encapsulation shell, or integrated with encapsulation shell or power drives.Control system comprises micro-control unit (MCU) or memory or wireless communication module or transducer, as temperature sensor, and luminance sensor, sound transducer, accelerometer etc., or comprise the combination of these devices.Control system is regulated the size of power drives output current or voltage according to the feedback signal of transducer.
The operation principle of power drives and control system: LED passes through power drives; The operating state of temperature sensor and luminance sensor monitoring LED, the output of FEEDBACK CONTROL power supply.Power supply also is subjected to the control of micro-control unit MCU.The MCU control storage.The operating state of memory record LED.Wireless communication module will send work state information to corresponding receiver.Wireless communication module will receive that also control information feeds back to MCU simultaneously.
Adopt a kind of Multifunctional LED encapsulating structure of the present invention, have that volume is little, light efficiency is high, thermal resistance is little, an advantage such as intelligent, low cost.And need not additionally to increase secondary optics element, cooling system, power drives and control system, then can directly apply to various illumination occasions, be convenient to promote by the transition process of traditional lighting to the LED illumination.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 2 is the structural representation of second kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 3 is the structural representation of the third embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 4 is the structural representation of the 4th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 5 is the structural representation of the 5th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 6 is the structural representation of the 6th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 7 is the structural representation of the 7th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 8 is the structural representation of the 8th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.
Fig. 9 is the logic diagram of the power drives and the control system of a kind of Multifunctional LED encapsulating structure of the present invention.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing:
As shown in Figure 1, be first kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.It comprises encapsulation shell 1, led chip 2, fluorescent material or mix the silica gel 3 of fluorescent material, cohesive material 4, free-form surface lens 5, band pin fin heat sink 8, power drives 9 and control system 10.Encapsulation shell 1 is the lead frame of metal.Led chip 2 is fixed on the metal of encapsulation shell by silver slurry or scolder or other bonding material.The electrode of led chip 2 is connected on the circuit of encapsulation shell 1.Led chip 2 is wrapped in fluorescent material or is mixed with in the silica gel 3 of fluorescent material.Free-form surface lens 5 is fixed on the encapsulation shell 1 by draw-in groove 6.Filled by cohesive material 4 by the cavity that free-form surface lens 5 basal planes, fluorescent material 3 upper surfaces and encapsulation shell 1 upper surface surround, as silica gel or epoxy resin.Encapsulation shell 1 sticks on heat sink 8 by heat-conducting cream 7.The electrode of encapsulation shell 1 is welded on the circuit that is integrated in heat sink 8.Power drives 9 also is placed on heat sink 8 with control system 10.
As shown in Figure 2, be second kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.It comprises an encapsulation shell 1, led chip 2, fluorescent material or mix the silica gel 3 of fluorescent material, cohesive material 4, free-form surface lens 5, band pin fin heat sink 8, power drives 9, control system 10 and MCPCB plate 12.Encapsulation shell 1 is the down-lead bracket of metal.Led chip 2 is fixed on the metal of encapsulation shell 1 by silver slurry or scolder or other bonding material.Led chip 2 is wrapped in fluorescent material or is mixed with in the silica gel 3 of fluorescent material.Free-form surface lens 5 is fixed on the encapsulation shell 1 by draw-in groove 6.Filled by cohesive material 4 by the cavity that the upper surface of the upper surface of the basal plane of free-form surface lens 5, fluorescent material 3 and encapsulation shell 1 surrounds, as silica gel or epoxy resin.Encapsulation shell 1 sticks on the MCPCB plate 12 by heat-conducting cream 7.Power drives 9 is placed on the MCPCB plate 12 with control system 10.MCPCB plate 12 sticks on heat sink 8.
As shown in Figure 3, be the third embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.Different with encapsulating structure shown in Figure 2 is that its optical system is made up of two lens 5 and 16.
As shown in Figure 4, be the 4th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.It comprises an encapsulation shell 1, led chip 2, and fluorescent material or mix the silica gel 3 of fluorescent material, by the free-form surface lens 5 that cohesive material is made, band pin fin heat sink 8, power drives 9 and control system 10.Encapsulation shell 1 is a ceramic substrate.Led chip 2 is fixed on the encapsulation shell 1 by silver slurry or scolder or other bonding material.The electrode of led chip 2 is connected on the circuit that encapsulates on the shell 1.Led chip 2 is wrapped in fluorescent material or is mixed with in the silica gel 3 of fluorescent material.The material of free-form surface lens 5 is silica gel or epoxy resin or glass.Encapsulation shell 1 sticks on heat sink 8 by heat-conducting cream 7.Power drives 9 and control system 10 also are placed on heat sink 8.
As shown in Figure 5, be the 5th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.Different with encapsulating structure shown in Figure 4 is that its led chip 2 is chip arrays.
As shown in Figure 6, be the 6th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.Different with LED encapsulating structure shown in Figure 5 is, its cooling system is by heat sink 8 constituting of having vapor chamber 13.
As shown in Figure 7, be the 7th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.It is the array structure of LED encapsulating structure shown in Figure 6, and its cooling system is to be made of heat sink 8 and the fan 14 that is placed under heat sink 8 that have vapor chamber 13.
As shown in Figure 8, be the 8th kind of embodiment of a kind of Multifunctional LED encapsulating structure of the present invention.Different with LED encapsulating structure shown in Figure 7 is, its heat abstractor is by heat sink 8 constituting of having heat pipe 15.
As shown in Figure 9, be the logic diagram of power drives and control system.LED 901 drives by power supply 902.The operating state of temperature sensor 904 and luminance sensor 905 monitoring LED 901, the output of FEEDBACK CONTROL power supply 902.Power supply 902 also is subjected to the control of micro-control unit MCU903.MCU 903 control storages 906.The operating state of memory 906 record LED 901.Wireless communication module 907 will send the LED work state information to corresponding receiver.Wireless communication module 907 will receive that also control information feeds back to MCU 903 simultaneously.
Claims (11)
1. Multifunctional LED encapsulating structure, include led chip (2), encapsulation shell (1), Embedding Material (4), optical system, cooling system, power drives (9) and control system (10), it is characterized in that: described led chip (2) is positioned at the cavity that is defined by encapsulation shell (1) and optical system, and be fixed on the encapsulation shell (1), wrapped up by Embedding Material (4); Led chip (2) the electrode circuit interior with encapsulating shell (1) is connected; Optical system is placed on the encapsulation shell (1); Cooling system is placed under the encapsulation shell (1); Power drives (9) and control system (10) are placed in that encapsulation shell (1) is gone up or encapsulation shell (1) down or on the cooling system or integrated or integrated with cooling system with encapsulation shell (1).
2. a kind of Multifunctional LED encapsulating structure according to claim 1 is characterized in that: described led chip (2) is single-chip or chip array.
3. a kind of Multifunctional LED encapsulating structure according to claim 1 is characterized in that: described optical system is the combination of single lens (5) or a plurality of lens (5).
4. a kind of Multifunctional LED encapsulating structure according to claim 3 is characterized in that: described lens (5) are made up of basal plane and outer surface.
5. a kind of Multifunctional LED encapsulating structure according to claim 4, it is characterized in that: the basal plane of described lens (5) can be a plane or sphere or quadratic surface or continuous free form surface, and the outer surface of described lens (5) can be sphere or quadratic surface or continuous free form surface or the discontinuous curved surface that has a plurality of free form surfaces to be spliced.
6. a kind of Multifunctional LED encapsulating structure according to claim 3 is characterized in that: described lens (5) are fixed by mechanical structure or are bonded on the encapsulation shell (1) by glue or packaging plastic.
7. a kind of Multifunctional LED encapsulating structure according to claim 1, it is characterized in that: described cooling system is heat sink (8) that have heat sink (8) of plate fin or have pin fin, can include heat pipe (15) in heat sink (8) structure, fan (14) or vapor chamber (13).
8. a kind of Multifunctional LED encapsulating structure according to claim 1 is characterized in that: the material adhesive of described encapsulation shell (1) by having high thermal conductivity is on cooling system.
9. a kind of Multifunctional LED encapsulating structure according to claim 1 is characterized in that: described power drives (9) is to be placed in encapsulation shell (1) or above the cooling system as an integral device, or is placed in below the encapsulation shell (1).
10. a kind of Multifunctional LED encapsulating structure according to claim 1 is characterized in that: described power drives is that the combination of sets as a discrete electronic device is formed in encapsulation shell or the cooling system.
11. a kind of Multifunctional LED encapsulating structure according to claim 1, it is characterized in that: described control system comprises micro-control unit (MCU), or memory, or wireless communication module, or transducer such as temperature sensor, luminance sensor, sound transducer, accelerometer etc., or comprise the combination of these devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377666U CN201838627U (en) | 2009-10-23 | 2009-10-23 | Multifunctional LED (light-emitting diode) packaging structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202377666U CN201838627U (en) | 2009-10-23 | 2009-10-23 | Multifunctional LED (light-emitting diode) packaging structure |
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| CN201838627U true CN201838627U (en) | 2011-05-18 |
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| CN2009202377666U Expired - Lifetime CN201838627U (en) | 2009-10-23 | 2009-10-23 | Multifunctional LED (light-emitting diode) packaging structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137833A (en) * | 2013-03-15 | 2013-06-05 | 深圳市瑞丰光电子股份有限公司 | Method and structure of light emitting diode (LED) packaging |
| CN105989781A (en) * | 2015-03-06 | 2016-10-05 | 联想(北京)有限公司 | Display device and sub display device thereof |
-
2009
- 2009-10-23 CN CN2009202377666U patent/CN201838627U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137833A (en) * | 2013-03-15 | 2013-06-05 | 深圳市瑞丰光电子股份有限公司 | Method and structure of light emitting diode (LED) packaging |
| CN105989781A (en) * | 2015-03-06 | 2016-10-05 | 联想(北京)有限公司 | Display device and sub display device thereof |
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Granted publication date: 20110518 |
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