CN102511200A - Circuit for driving a light emitting diode array - Google Patents
Circuit for driving a light emitting diode array Download PDFInfo
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- CN102511200A CN102511200A CN2010800015666A CN201080001566A CN102511200A CN 102511200 A CN102511200 A CN 102511200A CN 2010800015666 A CN2010800015666 A CN 2010800015666A CN 201080001566 A CN201080001566 A CN 201080001566A CN 102511200 A CN102511200 A CN 102511200A
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- 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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
A circuit for driving a light emitting diode array according to the present invention turns off an LED array for each group in the turn-on order while the LED array is kept the same as an average voltage, and thus allocates lighting time for the LED array to enable a load on an LED to be uniform, to thereby stabilize an LED driving area and thus extend an LED life. A light emitting diode array according to the present invention comprises: a voltage control unit controlling the increase/decrease in an input voltage of a power source full-wave rectified through a bridge diode; an LED array for each group, forming a pattern such that each group includes LEDs close to the group, where a plurality of LED devices are connected in series to form one group, and also n (2 or more) LED arrays for each group are connected in series; an opening switch connected in series to each of the LED arrays for each group, such that the LED arrays for each group are turned on in the connection order with the increase in voltage of the voltage control unit; a closing switch connected in parallel to each of the LED arrays for each group, such that the LED arrays for each group are turned off in the connection order with the decrease in the voltage of the voltage control unit; and a switch control unit connected to each of (n-1) opening switches, each of (n-1) closing switches, and the voltage control unit and controlling opening/closing operations of the switches according to the increase/decrease in the voltage of the voltage control unit.
Description
Technical field
The present invention relates to a kind of light emitting diode matrix drive circuit.In the lighting device that uses LED driving circuit, control the light emitting diode matrix drive circuit of lighting/extinguish driving of the LED of tandem compound in order.
Background technology
Electric current flows in the also luminous process of LED, and the type of drive of LED has multiple.Like: the mode through voltage or current drives, the linearity (LINEAR) whether relevant or (SWITCHING) mode of exchange etc. with exchange (SWITCHING).
Usually the mode of usefulness is to utilize the LED type of drive of series resistance.The electric current that flows to LED receive connect voltage (Vi), and the voltage driving mode that influences with resistance (R) value that LED is connected in series.
The structure of aforesaid way is the simplest, is the most frequently used structure.Though circuit is simple, can't be according to the variation of input voltage and Control current, so have the low shortcoming of electrical efficiency.
The LED type of drive of utilizing active device is to use the mode of variable voltage source or current source in order to control the electric current in the LED device.Its basic principle is similar with the LED type of drive of utilizing series resistance, but utilizes linear mode or exchanged form to adjust voltage or electric current.
Another kind of mode is as shown in Figure 1, is the current-control type LED type of drive of utilizing series voltage controlled adjuster (Regulator).
It is structure through transistor (TR) and operational amplifier adjustment LED electric current.Voltage through in the feedback sense resistance (RSENSE) is adjusted the electric current among the LED.
It is fairly simple to have line construction, can comparatively stably adjust the advantage through the electric current of LED.But in order to control the electric current through LED, and when reducing the voltage between the collector and emitter of transistor (TR), electrical efficiency reduces, and this is its shortcoming.
Have as shown in Figure 2ly in addition, utilize the current-control type LED type of drive of switchgear.
Increase and minimizing according to AC-input voltage are as the criterion with normal voltage, and each LED group is controlled the mode of peak current (Peak Current) effectively through exchange portion.Advantage is to have characteristics such as high efficiency, high power factor, low harmonics distortion in the input voltage range on a large scale.
Above-mentioned type of drive is in the led array group G1 that connects, G2, G3, G4, and along with the rising of AC-input voltage, G1, G2, G3, G4 light successively; Along with the reduction of AC-input voltage, G4, G3, G2, G1 extinguish successively, and thereupon, the suffered load of the LED of G1 raises, and (electrical stress) works with electric stress.
Therefore, need a kind ofly respectively organize lighting the time of led array, disperse the LED type of drive of the suffered load of LED through distributing.
Summary of the invention
Invention needs the problem of solution
The present invention is directed to above-mentioned existing problems and propose, the present invention provides a kind of light emitting diode matrix driver circuit.Employing changes the type of drive that led circuit connects according to the voltage of input, through voltage/current supervision portion, and the light emitting diode matrix driver circuit that the led array of each group extinguishes by the order of lighting successively.
The problem solution
In order to achieve the above object the present invention relates to a kind of light emitting diode matrix drive circuit.It comprises through the bridge diode, the voltage control division that control is gone up and down by the power input voltage of full-wave rectification (full-wave rectification); The series connection of plural number LED device is a group, and the N more than 2 the above-mentioned led array of respectively organizing connected again, forms adjacent respectively organize LED belong to organize separately respectively organize led array; Along with the voltage of said voltage control division raises, make and respectively organize led array and light the open switch of connecting according to the order that connects successively with each group led array; Along with the voltage of said voltage control division reduces, make and respectively organize led array and extinguish successively, with the parallelly connected enclosed switch of each group led array according to the order of lighting; Be connected with the open switch of said n-1 enclosed switch and voltage control division respectively, control the unlatching of these switches, the switch control part of closing motion according to the voltage up-down of said voltage control division with n-1.
In the present invention, said open switch is made up of n-1 open switch, organizes led array respectively to the n-1 group for first group and connects with each.Connect voltage; Under the state that first group led array is lighted; Accept the control command that the switch control part raises and sends according to the voltage of voltage supply department; Is more than 2 from first open switch to m open switch-m, below the n-1-extinguishing successively in order, the led array of the m+1 group of corresponding said m open switch is lighted successively.
In the present invention; Said enclosed switch is made up of n-1 enclosed switch, organizes led array respectively to the n-1 group for first group and connects, under the state that said first group of led array of organizing to m lighted with each; Accept the switch control part and reduce the control command of sending according to the voltage of voltage supply department; Is more than 2 from first enclosed switch to first enclosed switch-1, below the m-ON successively in order, first group led array of corresponding said first enclosed switch extinguishes.
Said open switch and enclosed switch among the present invention are made up of transistor, and said switch control part is connected with transistor base (Transistor Base), come conducting and insulate said transistor according to the voltage of switch control part supply.
The invention effect
Light emitting diode matrix drive circuit according to above-mentioned problem solution invention; In large-scale input voltage range, guarantee respectively to organize that led array is constant keeps average electric power, and extinguish successively according to lighting order; And distribute and respectively organize lighting the time of led array; The load that LED is received is impartial, thereby guarantees that LED drives the stabilisation in field, prolongs the LED life-span.
Brief Description Of Drawings
Fig. 1 representes to utilize the current-control type led drive circuit figure of existing series voltage controlled adjuster;
Fig. 2 representes to utilize the current-control type led drive circuit figure of existing switching equipment;
Fig. 3 representes the first embodiment integrated circuit figure of light emitting diode matrix drive circuit;
Fig. 4 representes the second embodiment integrated circuit figure of light emitting diode matrix drive circuit.
Reference numeral is explained as follows:
10,110: bridge diode (Bridge Diode); 20,120: the electric current restrictions; 30,130: voltage control division; 40,140: the switch control part; 50,150: each organizes led array; 51,151: the first groups; 52,152: the second groups; 53,153: the three groups; 60: open switch; 61: the first open switch; 62: the second open switch; 70: enclosed switch; 71: the first enclosed switchs; 72: the second enclosed switchs; 160: open-loop transistor; 161: the first open-loop transistors; 162: the second open-loop transistors; 170: the closed loop transistor; 171: the first closed loop transistors; 172: the second closed loop transistors.
Embodiment
Below will specify the embodiment of relevant light emitting diode matrix drive circuit of the present invention with reference to accompanying drawing.
Fig. 3 representes the first embodiment integrated circuit figure of light emitting diode matrix drive circuit.
As shown in Figure 3, the present invention by power supply 11, bridge diode 10, respectively organize led array 50, open switch 60, enclosed switch 70, switch control part 40, electric current restrictions 20, voltage control division 30 and constitute.
Said bridge diode 10 makes power supply by full-wave rectification when AC power supplies 11 is fed to circuit.
Said voltage control division 30 is the rising of control AC-input voltage and the module of reduction, and magnitude of voltage is transferred to below with the switch control part of explaining 40.Said electric current restrictions 20 is to guarantee input current and the constant module of output current.
The said led array 50 of respectively organizing is to be a group with the series connection of plural LED device, and the said led array 50 of respectively organizing of connecting again, and the adjacent LED that respectively organizes belongs to each group respectively.
In the circuit diagram for example shown in Figure 3, each is organized led array 50 and is formed by connecting with first group 51, second groups 52, the 3rd groups 53 3 groups, but according to embodiments of the invention, each organizes led array 50 can be by connecting more than 2 groups.
That is, among the present invention led array group number minimum be more than 2, if the group number is n, the number of lighting of group possibly be m in n, the m that lights group is more than 1, below the n.
Relevant open switch and enclosed switch are respectively n-1.According to the Off state of m open switch, light to the led array of m+1 group, in the entire n group, to organize under the state of lighting to m, the On state according to first enclosed switch extinguishes to first group led array.
Said open switch 60 is to light the switch of respectively organizing led array 50 of series connection by the order of connection.Under the state that the led array that is included in first group 51 is lighted, light first open switch 61 of second group of 52LED array; Under the state that first group 51 and second groups 52 led array is lighted, light second open switch 62 of the 3rd group of 53LED array.
Said open switch 60 is connected with switch control part 40 with each group led array 50 respectively.Specifically; Said first open switch 61 is connected with said switch control part 40 with said first group 51 respectively; The ON of first open switch 61; Have only under the state that first group of led array light, along with the OFF of first open switch 61, first group of 51 and second groups of 52LED array will be lighted.
Equally; Said second open switch 62 is connected with said switch control part 40 with said second group 52 respectively; The ON of second open switch 62 has only under the state that first group of 51 and second groups of 52LED array light, along with the OFF of second open switch 62; To there be electric current to pass through, light first group 51 and second groups 52, the 3rd groups of 53 led array.
Said enclosed switch 70 is to extinguish the switch of respectively organizing led array 50 that is connected in series by the order of lighting.Be included in all and respectively organize under the state that led array 50 lights, extinguish first enclosed switch 71 of first group of 51 led array; Under second group 52 and the 3rd group of state that 53 led array are lighted, extinguish second enclosed switch 72 of second group of 52 led array.
For this reason, said enclosed switch 70 is parallelly connected with each group led array 50 respectively, connects with said switch control part 40 respectively.
Specifically, said first enclosed switch 71 with said first group 51 parallelly connected, connect simultaneously with said switch control part 40.Comprising that along with the ON of first enclosed switch 71, first group of 51 led array will extinguish under all second group of states of lighting of quilt more than the led array respectively organizing led array 50.
Equally, said second enclosed switch 72 with said second group 52 parallelly connected, connect simultaneously with said switch control part 40.The ON of said first enclosed switch 71 has only under the state that said first group of 51 led array extinguish, and along with the ON of second enclosed switch 72, second group of 52 led array will extinguish.
Said switch control part 40 is connected with enclosed switch 70 with said open switch 60 respectively, along with the voltage up-down of said voltage control division 30, the switching command transfer of controlling each switch motion is arrived said open switch 60 and enclosed switch 70.
Thereupon, according to said circuit structure, when power supply 11 is linked circuit, said power supply when the bridge diode 10 by full-wave rectification, and be transferred to electric current restrictions 20.
Input current when said electric current restrictions 20 remains on voltage up-down under the effect of said voltage control division 30 is consistent with output current.
Said voltage control division 30 is to switch control part 40 transmission relevant voltage values, and according to initial low-voltage, said switch control part 40 will be opened first open switch 61.
At this moment, said enclosed switch 70 all is a closed condition.
Said voltage transmission is during to first group of 51 led array, said first group 51 luminous, first open switch 61 through the ON state is transferred to switch control part 40.
Under this state, when voltage raises under the effect of voltage control division 30, said switch control part 40 will be closed first open switch 61, open second open switch 62.
Said voltage transmission is during to first group of 51 led array; Because said first open switch 61 is a closed condition; Voltage can't be transferred to first open switch 61; After said first group 51, second group 52 luminous, and second open switch 62 through opening is transferred to switch control part 40.
When voltage raises under the effect of voltage control division 30, said switch control part 40 will be closed first open switch 61 and second open switch 62.
Said voltage transmission is during to first group of 51 led array, because said first open switch 61 and second open switch 62 are closed, voltage can't be transferred to second open switch 61, and after said first group 51, second group 52, the 3rd group 53 are luminous successively.
The same, according to the order of connection of each group led array 50, under the state that all light-emitting diodes are lighted, when voltage reduces under the effect of voltage control division 30, said switch control part 40 will be opened first enclosed switch 71, extinguish first group 51 that lights at first.
Under said first open switch, 61 closing state, said voltage can't be through said first group 51, but first enclosed switch 71 through the ON state flows to second group of 52 above led array and switch control part 40.
Under this state, when said voltage control division 30 further reduces voltage, said switch control part 40 will be opened said second enclosed switch 72, after first group 51, extinguish second group 52.
Thus; Under said first open switch 61 and second open switch, 62 pent states; Said voltage can't be through said first group 51 and second groups 52; But first enclosed switch 71 and second enclosed switch 72 through the ON state flow to the 3rd group of 53LED array and switch control part 40.
Fig. 4 representes the second embodiment integrated circuit figure about the light emitting diode matrix drive circuit.
As shown in the figure, the present invention includes power supply 111, bridge diode 110, respectively organize led array 150, open-loop transistor 160, closed loop transistor 170, transistor controls portion 140, electric current restrictions 120, voltage control division 130.
Said bridge diode 110 makes power supply by full-wave rectification when AC power supplies 111 is fed to circuit.
Said voltage control division 130 is rising and modules of reduction of control AC-input voltage, and magnitude of voltage is transferred to following transistor controls portion 140; Said electric current restrictions 120 is the modules that keep input current and output current steady state value.
The said led array 150 of respectively organizing is to be a group with the series connection of plural LED device, and the said led array 150 of respectively organizing of connecting again, and the adjacent LED that respectively organizes belongs to each group respectively.
In the circuit diagram for example shown in Figure 4, each is organized led array 150 and is connected with first group 151, second groups 152, the 3rd groups 153 3 groups, but according to embodiments of the invention, each organize led array 150 can be connected more than 2 groups.
Said open-loop transistor 160 is to light the PNP transistor of respectively organizing led array 150 that is connected in series according to the order that connects.Under the state that the led array that is included in first group 151 is lighted, light first open-loop transistor 161 of second group of 152 led array; Under the state that first group of 151 and second groups of 152LED array lighted, light second open-loop transistor 162 of the 3rd group of 153 led array.
Said open-loop transistor 160 is connected with transistor controls portion 140 with each group led array 150 respectively.More particularly; Said first open-loop transistor 161 is connected with emitter with said first group 151; Connect simultaneously, when voltage is connected to base stage and the conducting of first open-loop transistor 161, only light first group of 151 led array with the base stage (Base) of said transistor controls portion 140; Voltage is not connected to first open-loop transistor, 161 base stages, in the time of can not conducting, lights first group of 151 and second groups of 152 led array.
Equally; Said second open-loop transistor 162 is connected with said transistor controls portion 140 with said second group 152 respectively; Second open-loop transistor 162 is switched on; Have only under the state that first group of 151 and second groups of 152 led array light, when voltage not being connected to base stage for second open-loop transistor 162 is not switched on, first group 151, second groups 152 and the 3rd groups 153 led array is lighted.
Said closed loop transistor 170 is to extinguish the PNP transistor of respectively organizing led array 150 that is connected in series according to the order of lighting.Be included in all and respectively organize led array 150, extinguish the first closed loop transistor 171 of first group of 151 led array by under the state of lighting; Under second group 152 and the 3rd group of state that 153 led array are lighted, extinguish the second closed loop transistor 172 of second group of 152 led array.
For this reason, said closed loop transistor 170 is parallelly connected with each group led array 150 respectively, and connects with said transistor controls portion 140.
Specifically, the said first closed loop transistor 171 with said first group 151 parallelly connected with emitter, said transistor controls portion 140 and base stage series connection, the said first closed loop transistor 171 is connected with collector electrode.
Thus; Comprise all respectively organize second group of state that led array 150 lighted more than the led array by under the state of lighting; Voltage is fed to the emitter of the first closed loop transistor 171 and when being switched on; First group of 151 led array will extinguish, and keep illuminating state since second group of led array more than 152.
Equally, the said second closed loop transistor 172 with said second group 152 parallelly connected with emitter, said transistor controls portion 140 and base stage series connection, said second closed loop transistor 172 and collector electrode (Collector) are connected.
The said first closed loop transistor 171 is switched on, and has only under the state that said first group of 151 led array extinguished, and the second closed loop transistor 172 is switched on identical principle, and second group of 152 led array will be extinguished.
Said transistor controls portion 140 connects with closed loop transistor 170 with said open-loop transistor 160 respectively; So voltage up-down along with said voltage control division 130; To said open-loop transistor 160 and 170 supplies of closed loop transistor or cut-out voltage, thereby whether control each transistorized conducting.
In described circuit structure, when power supply 111 is connected to circuit, said power supply during through bridge diode 110 by full-wave rectification and be transferred to electric current restrictions 120.
Input current when said electric current restrictions 120 remains on voltage up-down under the effect of said voltage control division 130 is consistent with output current.
Said voltage control division 130 is to transistor controls portion 140 transmission relevant voltage values, and according to initial, low-voltage, said transistor controls portion 140 is to first open-loop transistor, 161 base stages supply voltage and realize conducting.
At this moment, said closed loop transistor 170 all is a state of insulation.
Said voltage transmission is during to first group of 151 led array, said first group 151 with luminous, through first open-loop transistor 161 of conducting state, voltage transmission is to transistor controls portion 140.
Under this state, when voltage raises under the effect of voltage control division 130, said transistor controls portion 140 will isolate first open-loop transistor 161, conducting second open-loop transistor 162.
Said voltage transmission is during to first group of 151 led array; Because said first open-loop transistor 161 is a state of insulation; Voltage can't be transferred to first open-loop transistor 161; After said first group 151, second group 152 luminous, and second open-loop transistor 162 through conducting state is transferred to transistor controls portion 140.
When voltage raise under the effect of voltage control division 130, said transistor controls portion 140 was with conducting first open-loop transistor 161 and second open-loop transistor 162.
Said voltage transmission is during to first group of 151 led array; Because said first open-loop transistor 161 and second open-loop transistor 162 are state of insulation; Voltage can't be transferred to second open-loop transistor 161, and after said first group 151, second group 152, the 3rd group 153 is switched on and luminous.
The same; The order of connection according to each group led array 150; Under the state that all light-emitting diodes are lighted; When voltage reduced under the effect of voltage control division 130, said transistor controls portion 140 realized conducting to the emitter supply voltage of the first closed loop transistor 171, extinguishes first group 151 that lights at first.
Said first open-loop transistor 161 is under the state that is switched on, and said voltage can't be through said first group 151, but the first closed loop transistor 171 through conducting state flows to second group of 152 above led array and transistor controls portion 140.
Under this state, when said voltage control division 130 further reduces voltage, said transistor controls portion 140 will and realize conducting to the said second closed loop transistor, 172 emitters supply voltage, after first group 151, extinguish second group 152.
Thus; Under said first open-loop transistor 161 and the states of second open-loop transistor 162 for insulation; Said voltage can't be through said first group 151 and second groups 152; But the first closed loop transistor 171 and the second closed loop transistor 172 through conducting state flow to the 3rd group of 153 led array and transistor controls portion 140.
Claims (4)
1. light emitting diode matrix drive circuit, said light emitting diode matrix drive circuit comprises:
Control the voltage control division that is raise and reduce by the input voltage of the power supply of full-wave rectification through the bridge diode; The series connection of plural number LED device is a group, respectively organizes the led array series connection for the n more than 2 simultaneously, make adjacent respectively organize LED belong to respectively each not on the same group respectively organize led array; Along with the voltage of said voltage control division raises, make and respectively organize led array and light the open switch of connecting with each group led array respectively according to the order that connects successively; Along with the voltage of said voltage control division reduces, make and respectively organize led array order extinguishes successively according to lighting, respectively with the parallelly connected enclosed switch of each group led array; N-1 open switch links to each other with n-1 enclosed switch and voltage control division separately, the switch control part of control switch on-off action along with the voltage up-down of said voltage control division.
2. light emitting diode matrix drive circuit according to claim 1, wherein, said open switch is made up of n-1 open switch, organizes led array respectively to the n-1 group for first group and connects with each; Connect voltage; Under the state that first group led array is lighted; Accept the control command that the switch control part raises and sends according to the voltage of voltage supply department; Is more than 2 from first open switch to m open switch-m, below the n-1-extinguishing successively in order, the led array of the m+1 group of corresponding said m open switch is lighted successively.
3. light emitting diode matrix drive circuit according to claim 2; Wherein, Said enclosed switch is made up of n-1 enclosed switch, organizes led array respectively to the n-1 group for first group and connects, under the state that said first group of led array of organizing to m lighted with each; Accept the switch control part and reduce the control command of sending according to the voltage of voltage supply department; Is more than 2 from first enclosed switch to first enclosed switch-1, below the m-to light successively in order, first group led array of corresponding said first enclosed switch extinguishes.
4. light emitting diode matrix drive circuit according to claim 1; Wherein, Said open switch and enclosed switch are made up of transistor, and said switch control part is connected with said transistor base, come conducting and insulate said transistor according to the voltage of switch control part supply.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100080959A KR100995793B1 (en) | 2010-08-20 | 2010-08-20 | Drive circuit for led array |
| KR10-2010-0080959 | 2010-08-20 | ||
| PCT/KR2010/006480 WO2012023653A1 (en) | 2010-08-20 | 2010-09-20 | Circuit for driving a light emitting diode array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102511200A true CN102511200A (en) | 2012-06-20 |
| CN102511200B CN102511200B (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080001566.6A Expired - Fee Related CN102511200B (en) | 2010-08-20 | 2010-09-20 | Light emitting diode matrix drive circuit |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4848537B1 (en) |
| KR (1) | KR100995793B1 (en) |
| CN (1) | CN102511200B (en) |
| WO (1) | WO2012023653A1 (en) |
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| KR101473797B1 (en) | 2013-05-27 | 2014-12-17 | 포항공과대학교 산학협력단 | LED drive circuit connected directly to the AC power for the LED is turned on in the same way. |
| KR101517607B1 (en) | 2013-06-19 | 2015-05-15 | 한국과학기술원 | Method and Apparatus for Controlling LED Lighting for Even Life by Switching Paralell-Connected Switch and LED Lighting Apparatus Using The Same |
| WO2015016592A1 (en) * | 2013-08-02 | 2015-02-05 | 주식회사 르코어테크놀러지 | Led driving integrated circuit and driving method therefor |
| KR101454460B1 (en) * | 2013-11-21 | 2014-10-23 | 한국전기연구원 | Led control device of ac driving |
| KR102231642B1 (en) * | 2014-01-06 | 2021-03-24 | 엘지이노텍 주식회사 | Apparatus of driving a light emitting device |
| KR102277126B1 (en) | 2014-06-24 | 2021-07-15 | 삼성전자주식회사 | DRIVING DEVICE FOR LEDs AND LIGHTING DEVICE |
| KR20160001498A (en) | 2014-06-27 | 2016-01-06 | 장호 | Led driving device capable of parallel driving of led group by voltage drop |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
| US20080088571A1 (en) * | 2006-10-16 | 2008-04-17 | Lg Philips Lcd. Co., Ltd. | LED driving apparatus and liquid crystal display apparatus using the same |
| KR20090010269A (en) * | 2007-07-23 | 2009-01-30 | 엘지전자 주식회사 | A driving appratus for led |
| US20090066267A1 (en) * | 2007-08-30 | 2009-03-12 | Osram Gesellschaft Mit Beshrankter Haftung | Arrangement and method for driving light-emitting components |
| KR100942234B1 (en) * | 2009-07-23 | 2010-02-12 | (주)로그인디지탈 | Illumination system of using light emitting diode |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57167492U (en) * | 1981-04-16 | 1982-10-21 | ||
| JPH0496999U (en) * | 1991-01-31 | 1992-08-21 | ||
| JP5099661B2 (en) * | 2005-10-28 | 2012-12-19 | 株式会社寺田電機製作所 | LED driving circuit and LED driving method |
| JP2009134933A (en) * | 2007-11-29 | 2009-06-18 | Mitsubishi Electric Corp | Led lighting device, and headlight for vehicle |
| JP5471330B2 (en) * | 2009-07-14 | 2014-04-16 | 日亜化学工業株式会社 | Light emitting diode drive circuit and light emitting diode lighting control method |
| TW201105172A (en) * | 2009-07-30 | 2011-02-01 | Advanced Connectek Inc | Light emitting diode (LED) device and driving method thereof |
-
2010
- 2010-08-20 KR KR1020100080959A patent/KR100995793B1/en active IP Right Grant
- 2010-09-20 CN CN201080001566.6A patent/CN102511200B/en not_active Expired - Fee Related
- 2010-09-20 WO PCT/KR2010/006480 patent/WO2012023653A1/en active Application Filing
-
2011
- 2011-08-01 JP JP2011168002A patent/JP4848537B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137261A (en) * | 2006-08-29 | 2008-03-05 | 安华高科技Ecbuip(新加坡)私人有限公司 | Device and method for driving LED |
| US20080088571A1 (en) * | 2006-10-16 | 2008-04-17 | Lg Philips Lcd. Co., Ltd. | LED driving apparatus and liquid crystal display apparatus using the same |
| KR20090010269A (en) * | 2007-07-23 | 2009-01-30 | 엘지전자 주식회사 | A driving appratus for led |
| US20090066267A1 (en) * | 2007-08-30 | 2009-03-12 | Osram Gesellschaft Mit Beshrankter Haftung | Arrangement and method for driving light-emitting components |
| KR100942234B1 (en) * | 2009-07-23 | 2010-02-12 | (주)로그인디지탈 | Illumination system of using light emitting diode |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781142A (en) * | 2012-06-29 | 2012-11-14 | 中山市威星电器有限公司 | Turning on and off method and device thereof for lamp |
| CN102811538A (en) * | 2012-07-24 | 2012-12-05 | 上海亚明照明有限公司 | Driving circuit for light emitting diode (LED) module |
| CN102883506A (en) * | 2012-09-21 | 2013-01-16 | 东南大学 | Method for dynamically controlling temperature of central area of array light emitting diode (LED) lighting lamp |
| CN102883506B (en) * | 2012-09-21 | 2014-10-29 | 东南大学 | Method for dynamically controlling temperature of central area of array light emitting diode (LED) lighting lamp |
| CN103906316A (en) * | 2014-03-04 | 2014-07-02 | 东莞博用电子科技有限公司 | Circuit capable of achieving complete-period full constant currents of alternating-current drive LEDs |
| CN103906316B (en) * | 2014-03-04 | 2018-06-15 | 深圳博用科技有限公司 | A kind of circuit of achievable exchange driving LED complete periods complete constant current |
| TWI670995B (en) * | 2018-05-29 | 2019-09-01 | 矽誠科技股份有限公司 | Light emitting diode driving apparatus with switch control circuit |
| US10433383B1 (en) | 2018-07-23 | 2019-10-01 | Semisilicon Technology Corp. | Light emitting diode driving apparatus with switch control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012023653A1 (en) | 2012-02-23 |
| JP2012043784A (en) | 2012-03-01 |
| CN102511200B (en) | 2016-02-17 |
| JP4848537B1 (en) | 2011-12-28 |
| KR100995793B1 (en) | 2010-11-22 |
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