CN107248544A - A kind of light emitting diode and its light fixture - Google Patents
A kind of light emitting diode and its light fixture Download PDFInfo
- Publication number
- CN107248544A CN107248544A CN201710267198.3A CN201710267198A CN107248544A CN 107248544 A CN107248544 A CN 107248544A CN 201710267198 A CN201710267198 A CN 201710267198A CN 107248544 A CN107248544 A CN 107248544A
- Authority
- CN
- China
- Prior art keywords
- circuit
- light
- semiconductor layer
- operational amplifier
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 59
- 238000000605 extraction Methods 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 230000004308 accommodation Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/02—Cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/20—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
- H01L33/22—Roughened surfaces, e.g. at the interface between epitaxial layers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Led Devices (AREA)
Abstract
The present invention relates to technical field of semiconductors, more particularly to a kind of light emitting diode for improving light utilization efficiency, and the light fixture made using the light emitting diode.Light emitting diode includes substrate, and the upper surface of substrate is sequentially provided with n-type semiconductor layer, luminescent layer and p-type semiconductor layer；The p-type semiconductor layer and luminescent layer are etched with provided with the n-type electrode layer being connected with n-type semiconductor layer in the etch-hole exposed for n-type semiconductor layer, etch-hole, and the upper surface of p-type semiconductor layer is connected with p-type electrode layer；The upper surface of p-type semiconductor layer is provided with multiple projections for being used to aid in light to project, and projection includes a light extraction inclined-plane, and the angle of the light extraction inclined-plane and vertical direction is a, and a is acute angle.The present invention in the upper surface of p-type semiconductor layer by setting multiple projections so that photon can improve light emission rate in outgoing by light extraction inclined-plane.Improve the light utilization efficiency of light emitting diode.
Description
Technical field
The present invention relates to technical field of semiconductors, more particularly to a kind of light emitting diode for improving light utilization efficiency, Yi Jili
The light fixture made of the light emitting diode.
Background technology
Traditional light emitting diode includes being sequentially depositing n-type semiconductor layer, luminescent layer and p-type half on substrate, substrate
Conductor layer, wherein luminescent layer, p-type semiconductor layer, which are provided with to be used to deposit in the exposed etch-hole of n-type semiconductor layer, etch-hole, n
Type electrode, p-type semiconductor layer external sediment has p-type electrode, when light emitting diode is in luminance, in p-type semiconductor layer and n
Apply generating positive and negative voltage in type semiconductor layer respectively, be so present in the electronics in the hole and n-type semiconductor in p type semiconductor layer
It is combined in luminescent layer and produces photon, photon projects the external world.
But the light extraction efficiency of existing light emitting diode is relatively low, i.e., photon project the external world probability it is not high；Mainly
Reason is：The photon formed in luminescent layer, because the refractive index of semiconductor layer is larger, is led when undergoing semiconductor layer air inlet
Cause partial photonic to be totally reflected, be re-introduced into inside semiconductor, photon is decayed, or even dissipate in the form of heat.This
Application to light emitting diode is very unfavorable.
The content of the invention
Occur it is an object of the invention to the photon for solving light emitting diode in the prior art in projection process, easily entirely
The problem of reflection, the light utilization efficiency of the light emitting diode was high there is provided a kind of light emitting diode.
Another object of the present invention is to there is provided a kind of high light fixture of light utilization efficiency.
The technical solution adopted by the present invention is：
Light emitting diode, including substrate, the upper surface of substrate are sequentially provided with n-type semiconductor layer, luminescent layer and p-type semiconductor
Layer；The p-type semiconductor layer and luminescent layer are etched with being provided with and n-type in the etch-hole exposed for n-type semiconductor layer, etch-hole
The n-type electrode layer of semiconductor layer connection, the upper surface of p-type semiconductor layer is connected with p-type electrode layer；The upper end of p-type semiconductor layer
Face includes the folder on a light extraction inclined-plane, the light extraction inclined-plane and vertical direction provided with multiple projections for being used to aid in light to project, projection
Angle is a, and a is acute angle.
Further, the raised at right angles triangle.
Further, it is described raised in isosceles right triangle.
Further, the etch-hole is arranged on the middle part of p-type semiconductor layer and luminescent layer, and p-type electrode layer is set in a ring
Put in the top of p-type semiconductor layer.
Yet further, etch-hole is provided with the n-type insulative transparent layer of ring-type, n-type insulative transparent layer covering luminescent layer, p-type
The side of semiconductor layer；N-type metal level is provided between n-type electrode layer and n-type semiconductor layer.
A kind of light fixture, including：
Light source；Light source includes pcb board, and pcb board is provided with least one above-mentioned light emitting diode；
Base, its middle part is provided with the lamp socket for being used for installing light source；
For containing transparent medium and transparent container, the upper end open of container, the lower end of container is set and middle part shape in a ring
Into the accommodation space having for housing light source；And the madial wall of container is that flexible flexible wall can be adjusted according to internal pressure；
Container is positioned over base；
Lid, is tightly connected with the upper end of container, and lid can respective container move up and down.
Preferably, the inner bottom surface of the lid extends inner cylinder to container direction, and inner cylinder is placed on external container or inside；And
The contact surface of inner cylinder and container is provided with O-ring seal；The lower end of lid is connected with container threads.
Lid is socketed by inner cylinder and container, in connection, is sealed by O-ring seal；Simultaneously lid lower end with
Container threads are connected, the position of convenient adjustment lid respective container.
Further, pcb board is provided with the constant-current circuit for being used for controlling light fixture to work, and it includes：
Rectification circuit, for civil power to be switched into direct current；
Pfc circuit；The output end signal connection of pfc circuit and rectification circuit；
Load output circuit；
Power circuit；
Transformer T1；Pfc circuit is coupled with load output circuit, power circuit respectively by transformer T1；
Power circuit is connected with optocoupler N3 photophore, and optocoupler N3 light-receiving device is arranged in pfc circuit, and power circuit passes through light
Coupling N3 is to pfc circuit output feedback signal；
Also include：Linear constant current adjusts circuit and voltage control circuit, and the linear constant current regulation circuit is provided with power adjusting pipe
Q6, power adjusting pipe Q6 input is connected with load output circuit, and power adjusting pipe Q6 output end is connect by resistance R54
Ground；Voltage control circuit is connected provided with two reference inputs, one of reference input with 2.5V power supply signals, another
Reference input is connected with the first bleeder circuit, and the first bleeder circuit adjusts circuit in parallel with linear constant current；Voltage control circuit
Output end and photophore output end signal connect.
Further, the linearity constant current control circuit includes operational amplifier Q200, the homophase input of operational amplifier
End is connected with the second bleeder circuit, and the second bleeder circuit provides reference voltage V1, the anti-phase input of operational amplifier for arithmetic unit
End is connected by resistance R53 with power adjusting pipe Q6 output end signal, and operational amplifier Q200 output end passes through resistance R63
Be connected with power adjusting Q6 control end signal, operational amplifier Q200 output end by resistance R62, electric capacity C12 with it is anti-phase
Input end signal is connected；Operational amplifier Q200 inverting input collection power adjusting pipe Q6 output end voltage V2, computing
Amplifier Q200 sends a computing signal to power adjusting pipe Q6, and power adjusting pipe Q6 is according to computing Signal Regulation output end
Output current.
Further, power adjusting pipe is N-type metal-oxide-semiconductor, and power adjusting pipe Q6 D extremely inputs are simultaneously electric with load output
Road is connected, and S extremely output ends are simultaneously grounded by resistance R54, and G extremely control ends, G poles are connected by resistance R57 with S poles signal；S
Pole is connected by resistance R53 with operational amplifier Q200 anti-phase input end signal, operational amplifier Q200 inverting input
It is grounded by electric capacity C34.
First bleeder circuit includes the resistance R27 and resistance R28 of series connection, and the second bleeder circuit includes the resistance R29 of series connection
With resistance R24；Another reference input of the voltage control circuit connects with being connected end signal in the middle of the first bleeder circuit
Connect, the pressure drop of circuit is adjusted for obtaining linear constant current.One end of second bleeder circuit is connected with 2.5V power supply signals, the other end
Ground connection.
Further, power circuit is externally exported provided with power supply VCC and above-mentioned 2.5V power supplys；Voltage control circuit includes fortune
Amplifier Q100 is calculated, operational amplifier Q100 inverting input is another reference input of the voltage control circuit,
Operational amplifier Q100 normal phase input end is one of reference input of the voltage control circuit；Operational amplifier
Inverting input passes sequentially through resistance R22, electric capacity C6 and is connected with operational amplifier Q100 output end signal；Operational amplifier
Normal phase input end is connected with 2.5V power supplys, and power supply VCC passes sequentially through resistance R20, resistance R21 and operational amplifier Q100 output
End signal is connected, and wherein optocoupler N3 photophore is in parallel with electronics R21.
Further, the load output circuit includes filter circuit, a secondary coil of filter circuit and transformer T1
Signal is connected.
Further, the middle connection end of first bleeder circuit is connected with voltage-stabiliser tube ZD2, and with voltage-stabiliser tube ZD2's
Positive pole is connected, and voltage-stabiliser tube ZD2 negative pole and the output end of filter circuit are connected.
Further, in addition to EMC circuits.EMC circuits are electrically connected with city, and output end is connected with rectification circuit.
The beneficial effect that the present invention is obtained：1st, the present invention is made by setting multiple projections in the upper surface of p-type semiconductor layer
Photon is obtained in outgoing, light emission rate can be improved by light extraction inclined-plane.Improve the light utilization efficiency of light emitting diode.2nd, container can be with
It is used as the lampshade of adjustment shape, thus it is possible to vary light path, improves light utilization efficiency.3rd, constant-current circuit improves loaded work piece efficiency.
Brief description of the drawings
Fig. 1 is a kind of cross section structure diagram of the invention.
Fig. 2 is another cross section structure diagram of the invention.
Fig. 3 is fitting structure decomposing schematic representation of the invention.
Fig. 4 is constant-current circuit schematic diagram of the invention.
Reference：
1 --- EMC circuits；2 --- pfc circuit；3 --- voltage control circuit；4 --- power circuit；5 --- the second partial pressure electricity
Road；6 --- the first bleeder circuit；7 --- linear constant current adjusts circuit；8 --- filter circuit；10 --- lid；11 --- it is interior
Cylinder；20 --- container；21 --- opening；22 --- madial wall；40 --- light fixture；30 --- base；31 --- upper surface；
32 --- lamp socket；101 --- substrate；102 --- n-type semiconductor layer；103 --- luminescent layer；104 --- p-type semiconductor layer；
105 --- p-type electrode layer；106 --- n-type electrode layer；107 --- n-type insulative transparent layer；108 --- n-type metal level.
Embodiment
Embodiment 1：A kind of light emitting diode, including substrate 101, the upper surface of substrate 101 is sequentially provided with n-type semiconductor layer
102nd, luminescent layer 103 and p-type semiconductor layer 104；The p-type semiconductor layer 104 and luminescent layer 103 are etched with being used for n-type half
Provided with the n-type electrode layer 106 being connected with n-type semiconductor layer 102 in the exposed etch-hole of conductor layer 102, etch-hole, p-type is partly led
The upper surface of body layer 104 is connected with p-type electrode layer 105；The upper surface of p-type semiconductor layer 104 is used to aid in light provided with multiple
The projection of injection, projection includes a light extraction inclined-plane, and the angle of the light extraction inclined-plane and vertical direction is a, and a is acute angle.A is preferably
30-45 degree, preferably 45 degree.
Projection is set to play the effect of auxiliary photon outgoing, such as after photon projects light extraction inclined-plane with low-angle,
Photon directly reflects removing；After photon projects light extraction inclined-plane with wide-angle, it is totally reflected, after total reflection, photon goes out convex
The another side risen is projected and projected on adjacent raised exiting surface, now, and photon can be anti-by adjacent raised exiting surface
Penetrate, hence into the external world, it is to avoid photon is decayed in semiconductor layer.
Further, the raised at right angles triangle.
When projection is set to right angled triangle, raised exiting surface has two, and one is that one, light extraction inclined-plane is light extraction
Right-angle surface；When photon projects light extraction right-angle surface, if low-angle is just directly reflected away；It is just complete if wide-angle
Light extraction inclined-plane is reflexed to, photon direction now, into low-angle, is directly refracted away with light extraction inclined-plane.Photon is thrown with wide-angle
When being mapped to light extraction inclined-plane, light extraction right-angle surface is reflected onto, photon is now directly reflected away from light extraction right-angle surface, if encountering phase
Adjacent raised light extraction inclined-plane, then enter extraneous in the way of total reflection.Square projection can effectively improve the utilization rate of photon.
Further, it is described raised in isosceles right triangle.
In experimentation, when projection is isosceles right triangle, its luminous efficiency is more excellent.
Further, the etch-hole is arranged on the middle part of p-type semiconductor layer 4 and luminescent layer 3, and p-type electrode layer 5 is in a ring
It is arranged on the top of p-type semiconductor layer 4.
The annular of p-type electrode layer 105 is set so that during LED operation, electric current flows to n-type from p-type electrode layer 105
During electrode layer 106, carry out in an annular fashion；Avoid local current from concentrating, cause part really, influence service life.
Referring to Fig. 2, yet further, etch-hole is provided with the n-type insulative transparent layer 107 of ring-type, n-type insulative transparent layer 107
Cover luminescent layer 103, the side of p-type semiconductor layer 104；Provided with n-type gold between n-type electrode layer 106 and n-type semiconductor layer 102
Belong to layer 108.
N-type insulative transparent layer 107 is set, can be more preferable by n-type electrode layer 106 and luminescent layer 103, p-type semiconductor layer 104
Separate.
Embodiment 2：A kind of light fixture 40, including：
Light source；Light source includes pcb board, and pcb board is provided with the light emitting diode at least one embodiment 1；
Base 30, its middle part of upper surface 31 is provided with the lamp socket 32 for being used for installing light source；
For containing transparent medium and transparent container 20, the upper end open 21 of container 20, the lower end of container 20 is set in a ring
And middle part is formed with the accommodation space for housing light source；And the madial wall 22 of container 20 be stretched for that can be adjusted according to internal pressure
The flexible wall of contracting；Container 20 is positioned over base 30；
Lid 10, is tightly connected with the upper end of container 20, and lid 10 can respective container 20 move up and down.
In the technical program, using container 20 as lens and the combination of lampshade, and container 20 is when in use, can be by adjusting
Whole lid 10 is in the position of container 20, so as to adjust the internal pressure of container 20, and then changes the shape of madial wall 22, so as to reach
Adjust the effect of light.When needing illumination, container 20 is taken out from base 30, and light source is installed on lamp socket 32, then
Put in back container 20；After light fixture 40 is luminous, light irradiates through container 20；Because light passes through container 20, light intensity
It is weakened, light becomes soft；Therefore lampshade etc need not be installed.When needing to change light direction of illumination, regulation can be passed through
The position of the respective container 20 of lid 10, lid 10 changes the air pressure of the top of container 20, simultaneously when respective container 20 is moved up and down
Also the hydraulic pressure inside container 20 is changed, the madial wall 22 of container 20 is flexible wall, and when hydraulic pressure changes, its shape can change
Become；Such as when the respective container 20 of lid 10 is moved up, hydraulic pressure reduces, and madial wall 22 is inwardly gradually recessed, can be by spirogyrate
Shape is changed into concave shape；Similarly, when lid 10 is moved down relative to container 20, madial wall 22 can have concave shape to be changed into outer
Convex form；The alteration of form of madial wall 22, changes the incident angle of light, changes light path, the diverging or poly- to container 20
Angular is adjusted.Shift gears simple, easily operation；Such as by changing weight weight of the increase on lid 10；Or
The lower end of person's lid 10 is threadedly coupled with container 20.Flexible wall can be used similar to can be with flexible flexible transparent rubber
Glue；Such as transparent rubber band etc.
Light source now can only have：Circuit board and light emitting diode；The container 20 in outside can equivalent to lampshade and thoroughly
Mirror.Internal light emitting diode is protected, and changes light path.
Preferably, the inner bottom surface of the lid 10 extends inner cylinder 11 to the direction of container 20, and inner cylinder 11 is placed on outside container 20
Portion or inside；And the contact surface of inner cylinder 11 and container 20 is provided with O-ring seal；The lower end of lid 10 is threadedly coupled with container 20.
Lid 10 is socketed by inner cylinder 11 with container 20, in connection, is sealed by O-ring seal；While lid 10
Lower end be threadedly coupled with container 20, the position of the convenient adjustment respective container 20 of lid 10.
Further, pcb board is provided with the constant-current circuit for being used for controlling light fixture 40 to work, including：
Rectification circuit, for civil power to be switched into direct current；
Pfc circuit 2；Pfc circuit 2 is connected with the output end signal of rectification circuit；
Load output circuit；
Power circuit 4；
Transformer T1；Pfc circuit 2 is coupled with load output circuit, power circuit 4 respectively by transformer T1；
Power circuit 4 is connected with optocoupler N3 photophore, and optocoupler N3 light-receiving device is arranged in pfc circuit 2, and power circuit 4 leads to
Optocoupler N3 is crossed to the output feedback signal of pfc circuit 2；
Also include：Linear constant current adjusts circuit 7 and voltage control circuit 3, and the linear constant current regulation circuit 7 is provided with power adjusting
Pipe Q6, power adjusting pipe Q6 input is connected with load output circuit, and power adjusting pipe Q6 output end is connect by resistance R54
Ground；Voltage control circuit 3 is provided with two reference inputs, and one of reference input is connected with 2.5V power supply signals, another
Individual reference input is connected with the first bleeder circuit 6, and the first bleeder circuit 6 is in parallel with linear constant current regulation circuit 7；Voltage is controlled
The output end of circuit 3 and the output end signal of photophore are connected.
When the technical program works, pfc circuit 2 is coupled by transformer T1 with load output circuit, power circuit 4, is born
One secondary coil of the input and transformer that carry output circuit is connected, and pfc circuit 2 is defeated to loading by the feedback of optocoupler
Go out the suitable voltage source of circuit output, to ensure the LED normal works in load output circuit；Linear constant current regulation circuit 7 is used
In the electric current of regulation load output circuit, to eliminate the ripple in circuit；Voltage control circuit 3 passes through sampling linear constant flow regulation
The pressure drop of circuit 7, coordinates control load output voltage and linear constant current to adjust the pressure drop of circuit 7 so that line with pfc circuit 2
Property constant flow regulation circuit 7 pressure drop it is minimum, can so improve the operating efficiency of load；Here load mainly include LED with
And linear constant current regulation circuit 7, and linear constant current regulation circuit 7 is mainly determined by power adjusting pipe Q6；And power adjusting pipe
Q6 saturation voltage drop is very small, modulates minimum so as to reach and improve the pressure drop that linear constant current is adjusted into circuit 7, reaches raising load
Operating efficiency.
Further, the linearity constant current control circuit includes operational amplifier Q200, the homophase input of operational amplifier
End is connected with the second bleeder circuit 5, and the second bleeder circuit 5 provides reference voltage V1 for arithmetic unit, operational amplifier it is anti-phase defeated
Enter end to be connected with power adjusting pipe Q6 output end signal by resistance R53, operational amplifier Q200 output end passes through resistance
R63 is connected with power adjusting Q6 control end signal, operational amplifier Q200 output end by resistance R62, electric capacity C12 with it is anti-
Phase input end signal is connected；Operational amplifier Q200 inverting input collection power adjusting pipe Q6 output end voltage V2, root
According to V1 and V2, operational amplifier Q200 sends a computing signal to power adjusting pipe Q6, and power adjusting pipe Q6 believes according to computing
Number regulation output end output current, because power adjusting pipe Q6 is grounded by resistance R54, output current size has influence on computing
The power adjusting pipe Q6 of amplifier Q200 inverting input collection output end voltage V2, so as to reach constant current output.
Further, power adjusting pipe is N-type metal-oxide-semiconductor.Triode can certainly be used.
Specifically, as shown in figure 1, in linearity constant current control circuit, power adjusting pipe Q6 D extremely inputs and with load
Output circuit is connected, and S extremely output ends are simultaneously grounded by resistance R54, and G extremely control ends, G poles pass through resistance R57 and S poles signal
Connection；S poles are connected by resistance R53 with operational amplifier Q200 anti-phase input end signal, and operational amplifier Q200's is anti-phase
Input is grounded by electric capacity C34.
First bleeder circuit 6 includes the resistance R27 and resistance R28 of series connection, and the second bleeder circuit 5 includes the resistance of series connection
R29 and resistance R24；The middle connection end letter of another reference input of the voltage control circuit 3 and the first bleeder circuit 6
Number connection, for obtain linear constant current adjust circuit 7 pressure drop.One end of second bleeder circuit 5 is connected with 2.5V power supply signals,
The other end is grounded.
Further, power circuit 4 is externally exported provided with power supply VCC and 2.5V power supply；Voltage control circuit 3 includes computing
Amplifier Q100, operational amplifier Q100 inverting input are another reference input of the voltage control circuit 3, fortune
The normal phase input end for calculating amplifier Q100 is one of reference input of the voltage control circuit 3；Operational amplifier
Inverting input passes sequentially through resistance R22, electric capacity C6 and is connected with operational amplifier Q100 output end signal；Operational amplifier
Normal phase input end is connected with 2.5V power supplys, and power supply VCC passes sequentially through resistance R20, resistance R21 and operational amplifier Q100 output
End signal is connected, and wherein optocoupler N3 photophore is in parallel with electronics R21.
Further, the load output circuit includes filter circuit 8, a filter circuit 8 and transformer T1 by-pass
Ring signal is connected.
Specifically, filter circuit 8 includes resistance R25, electric capacity C8 and the diode D1 and electric capacity C3 of series connection；Diode D1
In parallel with resistance R25, electric capacity C8, electric capacity C3 one end is connected with diode D1 output end, the input of the other end and secondary coil
End connection.
Further, the middle connection end of first bleeder circuit 6 is connected with voltage-stabiliser tube ZD2, and with voltage-stabiliser tube ZD2's
Positive pole is connected, and voltage-stabiliser tube ZD2 negative pole is connected with the output end of filter circuit 8.
Voltage-stabiliser tube ZD2 is set, can prevent linear constant current from adjusting circuit 7 and hindering that pressure drop occur excessive for some reason；When pressure drop is excessive
When, the voltage at voltage-stabiliser tube ZD2 two ends can exceed its burning voltage, breakdown.The operational amplifier 100 of voltage control circuit 3
Inverting input signal enhancing, so as to adjust the photophore electric current reduction for flowing through optocoupler N3, pfc circuit 2 is carried out to output coupling
Regulation, stops externally output.
Further, in addition to EMC circuits 1.EMC circuits 1 are electrically connected with city, and output end is connected with rectification circuit.
EMC circuits 1 can eliminate electromagnetic interference, strengthen circuit stability.
Constant-current circuit designs ripple elimination circuit in output circuit and eliminates ripple, secondly, and design limiting circuit is to line
The pressure drop that ripple eliminates circuit is controlled so that the output ripple-free and efficiency high of pfc circuit 2.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of light emitting diode, including substrate, the upper surface of substrate are sequentially provided with n-type semiconductor layer, luminescent layer and p-type half
Conductor layer；It is characterized in that：The p-type semiconductor layer and luminescent layer are etched with the etch-hole exposed for n-type semiconductor layer, erosion
Carve provided with the n-type electrode layer being connected with n-type semiconductor layer in hole, the upper surface of p-type semiconductor layer is connected with p-type electrode layer；P-type
The upper surface of semiconductor layer includes a light extraction inclined-plane, the light extraction inclined-plane provided with multiple projections for being used to aid in light to project, projection
Angle with vertical direction is a, and a is acute angle.
2. a kind of light emitting diode according to claim 1, it is characterised in that：The etch-hole is arranged on p-type semiconductor
The middle part of layer and luminescent layer, p-type electrode layer is arranged on the top of p-type semiconductor layer in a ring.
3. a kind of light emitting diode according to claim 1, it is characterised in that：N-type insulation of the etch-hole provided with ring-type is saturating
Bright layer, n-type insulative transparent layer covering luminescent layer, the side of p-type semiconductor layer；It is provided between n-type electrode layer and n-type semiconductor layer
N-type metal level.
4. a kind of light fixture, it is characterised in that：Including：
Light source；Light source includes pcb board, and pcb board is provided with any described light emitting diode of at least one claims 1 to 3；
Base, its middle part is provided with the lamp socket for being used for installing light source；
For containing transparent medium and transparent container, the upper end open of container, the lower end of container is set and middle part shape in a ring
Into the accommodation space having for housing light source；And the madial wall of container is that flexible flexible wall can be adjusted according to internal pressure；
Container is positioned over base；
Lid, is tightly connected with the upper end of container, and lid can respective container move up and down.
5. a kind of light fixture according to claim 4, it is characterised in that：The inner bottom surface of the lid extends to container direction
Inner cylinder, inner cylinder is placed on external container or inside；And the contact surface of inner cylinder and container is provided with O-ring seal；The lower end of lid and container
Threaded connection.
6. a kind of light fixture according to claim 4, it is characterised in that：Pcb board is provided with the constant current for being used for controlling light fixture to work
Circuit, it includes：
Rectification circuit, for civil power to be switched into direct current；
Pfc circuit；The output end signal connection of pfc circuit and rectification circuit；
Load output circuit；
Power circuit；
Transformer T1；Pfc circuit is coupled with load output circuit, power circuit respectively by transformer T1；
Power circuit is connected with optocoupler N3 photophore, and optocoupler N3 light-receiving device is arranged in pfc circuit, and power circuit passes through light
Coupling N3 is to pfc circuit output feedback signal；
Also include：Linear constant current adjusts circuit and voltage control circuit, and the linear constant current regulation circuit is provided with power adjusting pipe
Q6, power adjusting pipe Q6 input is connected with load output circuit, and power adjusting pipe Q6 output end is connect by resistance R54
Ground；Voltage control circuit is connected provided with two reference inputs, one of reference input with 2.5V power supply signals, another
Reference input is connected with the first bleeder circuit, and the first bleeder circuit adjusts circuit in parallel with linear constant current；Voltage control circuit
Output end and photophore output end signal connect.
7. a kind of light fixture according to claim 6, it is characterised in that：The linearity constant current control circuit includes operation amplifier
Device Q200, the in-phase input end of operational amplifier is connected with the second bleeder circuit, and the second bleeder circuit provides reference for arithmetic unit
Voltage V1, the inverting input of operational amplifier is connected by resistance R53 with power adjusting pipe Q6 output end signal, and computing is put
Big device Q200 output end is connected by resistance R63 with power adjusting Q6 control end signal, operational amplifier Q200 output
End is connected by resistance R62, electric capacity C12 with anti-phase input end signal；Operational amplifier Q200 inverting input collection power
Regulation pipe Q6 output end voltage V2, operational amplifier Q200 send a computing signal, power adjusting to power adjusting pipe Q6
Pipe Q6 is according to the output current of computing Signal Regulation output end.
8. a kind of light fixture according to claim 7, it is characterised in that：Power adjusting pipe is N-type metal-oxide-semiconductor, power adjusting pipe
Q6 D extremely inputs are simultaneously connected with load output circuit, and S extremely output ends are simultaneously grounded by resistance R54, G extremely control ends,
G poles are connected by resistance R57 with S poles signal；S poles are connected by resistance R53 and operational amplifier Q200 anti-phase input end signal
Connect, operational amplifier Q200 inverting input is grounded by electric capacity C34.
9. a kind of light fixture according to claim 8, it is characterised in that：First bleeder circuit include series connection resistance R27 and
Resistance R28, the second bleeder circuit includes the resistance R29 and resistance R24 of series connection；Another of the voltage control circuit is with reference to defeated
Enter end with being connected end signal connection in the middle of the first bleeder circuit, the pressure drop of circuit is adjusted for obtaining linear constant current；Second point
One end of volt circuit is connected with 2.5V power supply signals, other end ground connection.
10. a kind of light fixture according to claim 9, it is characterised in that：Power circuit is provided with power supply VCC and above-mentioned 2.5V electricity
Source is externally exported；Voltage control circuit includes operational amplifier Q100, and operational amplifier Q100 inverting input is the electricity
Another reference input of voltage-controlled circuit processed, operational amplifier Q100 normal phase input end is its of the voltage control circuit
In a reference input；The inverting input of operational amplifier passes sequentially through resistance R22, electric capacity C6 and operational amplifier Q100
Output end signal connection；The normal phase input end of operational amplifier is connected with 2.5V power supplys, power supply VCC pass sequentially through resistance R20,
Resistance R21 is connected with operational amplifier Q100 output end signal, and wherein optocoupler N3 photophore is in parallel with electronics R21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267198.3A CN107248544A (en) | 2017-04-21 | 2017-04-21 | A kind of light emitting diode and its light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267198.3A CN107248544A (en) | 2017-04-21 | 2017-04-21 | A kind of light emitting diode and its light fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107248544A true CN107248544A (en) | 2017-10-13 |
Family
ID=60017206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710267198.3A Withdrawn CN107248544A (en) | 2017-04-21 | 2017-04-21 | A kind of light emitting diode and its light fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107248544A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2129373Y (en) * | 1992-08-28 | 1993-04-07 | 王汉如 | Spotlight with liquid-zoom lens |
| JP2009021082A (en) * | 2007-07-11 | 2009-01-29 | Sharp Corp | Lighting system |
| CN102024885A (en) * | 2009-09-10 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Nitride semiconductor light-emitting component |
| CN101789478B (en) * | 2010-03-04 | 2013-07-31 | 上海蓝光科技有限公司 | Light-emitting diode chip and manufacturing method thereof |
| CN103335277A (en) * | 2013-06-05 | 2013-10-02 | 江苏华安高技术安防产业有限公司 | Light guide lamp with cavity structure and manufacturing method of light guide lamp |
| CN104112804A (en) * | 2013-04-18 | 2014-10-22 | 展晶科技(深圳)有限公司 | Light-emitting diode die |
| CN204538077U (en) * | 2015-02-12 | 2015-08-05 | 聚灿光电科技股份有限公司 | LED chip and use the light-emitting device of this LED chip |
| CN204741411U (en) * | 2015-07-17 | 2015-11-04 | 东莞华明灯具有限公司 | Single -stage PFC's low constant current circuit that decreases of low ripple |
-
2017
- 2017-04-21 CN CN201710267198.3A patent/CN107248544A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2129373Y (en) * | 1992-08-28 | 1993-04-07 | 王汉如 | Spotlight with liquid-zoom lens |
| JP2009021082A (en) * | 2007-07-11 | 2009-01-29 | Sharp Corp | Lighting system |
| CN102024885A (en) * | 2009-09-10 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Nitride semiconductor light-emitting component |
| CN101789478B (en) * | 2010-03-04 | 2013-07-31 | 上海蓝光科技有限公司 | Light-emitting diode chip and manufacturing method thereof |
| CN104112804A (en) * | 2013-04-18 | 2014-10-22 | 展晶科技(深圳)有限公司 | Light-emitting diode die |
| CN103335277A (en) * | 2013-06-05 | 2013-10-02 | 江苏华安高技术安防产业有限公司 | Light guide lamp with cavity structure and manufacturing method of light guide lamp |
| CN204538077U (en) * | 2015-02-12 | 2015-08-05 | 聚灿光电科技股份有限公司 | LED chip and use the light-emitting device of this LED chip |
| CN204741411U (en) * | 2015-07-17 | 2015-11-04 | 东莞华明灯具有限公司 | Single -stage PFC's low constant current circuit that decreases of low ripple |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5558647B1 (en) | Drive circuit, illumination light source, and illumination device | |
| US9696011B2 (en) | Extended persistence and reduced flicker light sources | |
| CN107529241A (en) | A kind of linear Constant-power LED drive circuit of single hop and method | |
| CN103139990A (en) | Light-adjustable light-emitting diode (LED) driving power | |
| CN109348597A (en) | The control circuit of compatible 0 ~ 10V light modulator and TRAIC light modulator | |
| EP3534677A1 (en) | Linear constant-current driver circuit | |
| CN107131430A (en) | The high light fixture of the chip structure and light utilization efficiency of light emitting diode | |
| CN107248544A (en) | A kind of light emitting diode and its light fixture | |
| CN107221591A (en) | A kind of light utilization efficiency high light fixture and light emitting diode | |
| CN107221589A (en) | A kind of light emitting diode and its light fixture for improving light utilization efficiency | |
| CN107086261A (en) | The chip structure and light fixture of a kind of light emitting diode | |
| CN107221590A (en) | A kind of chip structure and light fixture of the light emitting diode for improving light utilization efficiency | |
| CN105674082A (en) | Water-cooling heat dissipation plant lamp | |
| CN203517540U (en) | Induction-type floor lighting device | |
| CN107068666A (en) | The package structure for LED and light fixture of thermal diffusivity can be improved | |
| CN107221529A (en) | Heat dispersion good package structure for LED and light fixture | |
| WO2018192581A1 (en) | Chip structure of light emitting diode for improving light utilization efficiency, and lamp | |
| JP2012084433A (en) | Lighting system | |
| CN106793224A (en) | A kind of multifunctional water heater | |
| CN205261248U (en) | LED agricultural illumination lamps and lanterns | |
| CN205640333U (en) | LBD lamp assembly | |
| CN105307312B (en) | A kind of linear LED drive circuit of high power factor | |
| CN212777140U (en) | Moisture-proof outdoor LED lamp convenient to maintain | |
| CN204164723U (en) | LED intelligent lamp | |
| CN107180824A (en) | The optimized packaging structure and light fixture of light emitting diode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171013 |