CN201563268U - Driving circuit for OLED lamps - Google Patents
Driving circuit for OLED lamps Download PDFInfo
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- CN201563268U CN201563268U CN200920238427XU CN200920238427U CN201563268U CN 201563268 U CN201563268 U CN 201563268U CN 200920238427X U CN200920238427X U CN 200920238427XU CN 200920238427 U CN200920238427 U CN 200920238427U CN 201563268 U CN201563268 U CN 201563268U
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- circuit
- constant current
- bridge rectifier
- oled
- output circuit
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- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000001939 inductive effect Effects 0.000 abstract description 4
- 238000005034 decoration Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 101150037009 pin1 gene Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
本实用新型公开了一种用于OLED灯具的驱动电路。包括桥式整流电路(1)和恒流处理输出电路(2)，在电源端和桥式整流电路之间依次串接有过流过压、开机浪涌保护电路(3)和EMI滤波电路(4)，桥式整流电路与恒流处理输出电路之间串接有PFC校正电路(5)。此驱动电路外围元件少，设计简单，成本低，工作电压低而比较安全，用此电路生产的OLED灯具适用于室内照明室内装潢；是恒流开关驱动电源，可应用于动态负载、容性和感性负载；具有过压过流保护、开机防浪涌冲击保护、良好的EMI处理等；具有PFC矫正电路，具有较高的功率因数，提高整个电网的利用率。
The utility model discloses a driving circuit for an OLED lamp. It includes a bridge rectifier circuit (1) and a constant current processing output circuit (2), and an overcurrent and overvoltage protection circuit (3) and an EMI filter circuit ( 4), a PFC correction circuit (5) is connected in series between the bridge rectifier circuit and the constant current processing output circuit. This drive circuit has few external components, simple design, low cost, low working voltage and relatively safe. The OLED lamps produced with this circuit are suitable for indoor lighting and interior decoration; it is a constant current switching drive power supply, which can be applied to dynamic loads, capacitive and Inductive load; with over-voltage and over-current protection, start-up anti-surge impact protection, good EMI treatment, etc.; with PFC correction circuit, with high power factor, improving the utilization rate of the entire power grid.
Description
Technical field
The utility model relates to a kind of drive circuit of lighting, specifically is meant a kind of drive circuit of the OLED of being used for light fixture.
Background technology
At present, for saving energy resource consumption, the lighting of development power saving, low heating, environment-friendly type seems more urgent.As light source, its shortcoming is with thermal source bulb etc. for conventional bulb such as incandescent lamp: brightness irregularities, light is dazzling, light efficiency is low, caloric value greatly, burn out easily.And the electricity-saving lamp that generally uses is that fluorescent tube belongs to linear light sorurce, and it can't provide uniform lighting source, and fluorescent tube contains toxic gases such as mercury.In addition, conventional bulb or fluorescent lamp need higher driving voltage, and fluorescent tube also easily breaks, and transportation is inconvenient.
Adopt light-emitting diode (LED) as light source applications in illuminating lamp, though need shortcomings such as higher driving voltage and power consumption are big before having solved, but light-emitting diode (LED) as light source applications in illuminating lamp, because light-emitting diode (LED) is the solidus light source, and the light fixture heat radiation is the bottleneck of its application, lamp distribution also needs to increase cost in addition simultaneously, also can't provide uniform lighting source.Therefore, the lighting that needs illuminance distribution, power saving, low heating on the market.
Present stage come into vogue adopt Organic Light Emitting Diode (OLED) as light source applications in illuminating lamp, Organic Light Emitting Diode (OLED) (organic light-emitting diode) is an area source, possesses characteristics such as light, thin, soft, transparent, low heating, environmental protection.Organic Light Emitting Diode display lighting technology is a kind of technology that is converted into luminous energy by the organic semiconductor functional material, with electric energy, because of its have simple in structure, thickness is little, response speed is fast, low in energy consumption, the visual angle is wide, working temperature is low, can realize the soft characteristics that show, generally believed it is the most promising display lighting technology by the people in the industry, it is the development trend of illuminating industry that Organic Light Emitting Diode is used lighting.The core of Organic Light Emitting Diode illuminating lamp is a power driving circuit; the drive circuit of steady operation is the basic guarantee of Organic Light Emitting Diode illuminating lamp operate as normal, and existing OLED drive circuit is in lightning protection, overcurrent protection and EMI processing etc. also existing problems.
The utility model content
The purpose of this utility model is to provide a kind of have overcurrent protection, EMI processing and PFC correcting function, can make the drive circuit of OLED light fixture steady operation.
For solving the problems of the technologies described above; the technical solution adopted in the utility model is: the drive circuit that is used for the OLED light fixture; comprise bridge rectifier and constant current processing output circuit; the input of bridge rectifier is connected with power end; the output of bridge rectifier is connected with the input that output circuit is handled in constant current; the output that output circuit is handled in constant current is connected with OLED; between power end and described bridge rectifier, be serially connected with overcurrent-overvoltage successively; start surge protection circuit and EMI filter circuit, described bridge rectifier and constant current are handled between the output circuit and are serially connected with the PFC correcting circuit.
Described constant current is handled between output circuit and the PFC correcting circuit and is provided with electric capacity.
Owing to adopted above-mentioned structure, the utlity model has following advantage:
1, this drive circuit peripheral cell is few, simplicity of design, and cost is low, and the low and safety relatively of operating voltage is applicable to the room lighting indoor decoration with the OLED light fixture of this circuit production.
2, be the constant current switch driving power, can be applicable to dynamic load, capacitive and inductive load;
3, having over-voltage over-current protection, the anti-surge surge protection of start, good EMI handles etc.;
4, have the PFC circuit for rectifying, have higher power factor, improve the utilance of whole electrical network.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the circuit diagram that is used for the drive circuit of OLED light fixture.
Embodiment
As shown in Figure 1; the described drive circuit that is used for the OLED light fixture; comprise bridge rectifier 1 and constant current processing output circuit 2; the input of bridge rectifier 1 is connected with power end; the output of bridge rectifier 1 is connected with the input that output circuit 2 is handled in constant current; the output that output circuit 2 is handled in constant current is connected with OLED; between power end and described bridge rectifier 1, be serially connected with overcurrent-overvoltage successively; start surge protection circuit 3 and EMI filter circuit 4, described bridge rectifier 1 and constant current are handled between the output circuit 2 and are serially connected with PFC correcting circuit 5.
Wherein, overcurrent-overvoltage, the negative tempperature coefficient thermistor RH1 of start in the surge protection circuit 3 can prevent that immediate current of boot-strap is too high and burn in the circuit other components and parts; Fuse F1 can ensure circuit under normal operation, and the variation of power network current can not exert an influence to the components and parts of circuit; When input voltage was too high, piezo-resistance VR1 can ensure that circuit is unaffected in operate as normal.
Differential mode capacitor CX1, CX2 in the EMI filter circuit 4, common mode inductance L1 form EMI jointly and suppress circuit, produce interference effect in the time of can suppressing differential mode interference signal and common mode and disturb signal to the circuit operate as normal.
Bridge rectifier pipe BG1 in the bridge rectifier 1 changes alternating current into direct current.
Electric capacity EC1 in the PFC correcting circuit 5, electric capacity EC2, diode D1, D2, D3, the resistance R 1 common PFC circuit for rectifying of forming, the power factor of raising entire circuit.
Handle between the output circuit to be provided with capacitor C 1 in PFC correcting circuit and constant current, be used to filter the ripple behind the bridge rectifier.
The U1 that constant current is handled in the output circuit 2 is the constant-current driven chip with PWM function, and the voltage that pin1 can bear can reach 450V.R2 shields, and avoids the impact chip of pulse signal frequency.R4 is an adjustable resistance; play the inductive current detection effect; another important function is when load short circuits; metal-oxide-semiconductor Q1 electric current sharply increases, and pressure drop on the R4 raises, when inductive current reference signal that this signal produces greater than the U1 chip internal; internal protection circuitry starts; the internal comparator upset ends metal-oxide-semiconductor Q1, inactivity output.When power MOS pipe Q1 work ended, to the Organic Light Emitting Diode electric, EC3 played filter action by L2 discharge process D4, and there is constant electric current output at OLED+ and OLED-two ends.When power MOS pipe Q1 conducting, L2, Q1, R4 form the loop, and there is constant electric current output at OLED+ and OLED-two ends.Filter capacitor C2 is used for filtering, the operating frequency that resistance R 3 is regulated U1.
In a word; though the utility model has exemplified above-mentioned preferred implementation; but should illustrate; though those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present utility model, otherwise all should be included in the protection range of the present utility model.
Claims (2)
1. drive circuit that is used for the OLED light fixture; comprise bridge rectifier (1) and constant current processing output circuit (2); the input of bridge rectifier (1) is connected with power end; the output of bridge rectifier (1) is connected with the input that output circuit (2) is handled in constant current; the output that output circuit (2) is handled in constant current is connected with OLED; it is characterized in that: between power end and described bridge rectifier (1), be serially connected with overcurrent-overvoltage successively; start surge protection circuit (3) and EMI filter circuit (4), described bridge rectifier (1) and constant current are handled between the output circuit (2) and are serially connected with PFC correcting circuit (5).
2. according to the described drive circuit that is used for the OLED light fixture of claim 1, it is characterized in that: handle between output circuit (2) and the PFC correcting circuit (5) being provided with electric capacity (C1) in described constant current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920238427XU CN201563268U (en) | 2009-11-04 | 2009-11-04 | Driving circuit for OLED lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920238427XU CN201563268U (en) | 2009-11-04 | 2009-11-04 | Driving circuit for OLED lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201563268U true CN201563268U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920238427XU Expired - Fee Related CN201563268U (en) | 2009-11-04 | 2009-11-04 | Driving circuit for OLED lamps |
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| Country | Link |
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| CN (1) | CN201563268U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977474A (en) * | 2010-11-16 | 2011-02-16 | 山东华盈电力能源发展有限公司 | Drive circuit of light emitting diode (LED) constant current illuminating lamp with characteristics of soft start and shock resistance |
| CN102014557A (en) * | 2010-10-19 | 2011-04-13 | 王子能 | LED dimming power supply |
| CN102325398A (en) * | 2011-08-23 | 2012-01-18 | 昆山工研院新型平板显示技术中心有限公司 | Lighting device |
| CN102625544A (en) * | 2012-04-13 | 2012-08-01 | 余塘 | Low-cost high-performance LED constant current drive circuit |
| CN102665362A (en) * | 2012-05-28 | 2012-09-12 | 济南九恒实业有限公司 | Earthing type protective infrared human-sensing LED smart lamp |
| CN103607810A (en) * | 2013-10-31 | 2014-02-26 | 汤志新 | Control circuit of LED lighting equipment |
| WO2015139437A1 (en) * | 2014-03-18 | 2015-09-24 | 深圳创维－Rgb电子有限公司 | Oled drive power supply device |
| CN104968101A (en) * | 2015-06-23 | 2015-10-07 | 成都亿信标准认证集团有限公司 | Anti-lightning LED power supply protection circuit |
-
2009
- 2009-11-04 CN CN200920238427XU patent/CN201563268U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014557A (en) * | 2010-10-19 | 2011-04-13 | 王子能 | LED dimming power supply |
| CN101977474A (en) * | 2010-11-16 | 2011-02-16 | 山东华盈电力能源发展有限公司 | Drive circuit of light emitting diode (LED) constant current illuminating lamp with characteristics of soft start and shock resistance |
| CN101977474B (en) * | 2010-11-16 | 2013-03-13 | 房林 | Drive circuit of light emitting diode (LED) constant current illuminating lamp with characteristics of soft start and shock resistance |
| CN102325398A (en) * | 2011-08-23 | 2012-01-18 | 昆山工研院新型平板显示技术中心有限公司 | Lighting device |
| CN102325398B (en) * | 2011-08-23 | 2013-09-04 | 昆山工研院新型平板显示技术中心有限公司 | Lighting device |
| CN102625544A (en) * | 2012-04-13 | 2012-08-01 | 余塘 | Low-cost high-performance LED constant current drive circuit |
| CN102625544B (en) * | 2012-04-13 | 2015-07-22 | 余塘 | Low-cost high-performance LED constant current driving circuit |
| CN102665362A (en) * | 2012-05-28 | 2012-09-12 | 济南九恒实业有限公司 | Earthing type protective infrared human-sensing LED smart lamp |
| CN102665362B (en) * | 2012-05-28 | 2014-04-09 | 济南九恒实业有限公司 | Earthing type protective infrared human-sensing LED smart lamp |
| CN103607810A (en) * | 2013-10-31 | 2014-02-26 | 汤志新 | Control circuit of LED lighting equipment |
| WO2015139437A1 (en) * | 2014-03-18 | 2015-09-24 | 深圳创维－Rgb电子有限公司 | Oled drive power supply device |
| CN104968101A (en) * | 2015-06-23 | 2015-10-07 | 成都亿信标准认证集团有限公司 | Anti-lightning LED power supply protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111104 |