CN103957620A - Driving method and power source for bipolar OLED illumination - Google Patents
Driving method and power source for bipolar OLED illumination Download PDFInfo
- Publication number
- CN103957620A CN103957620A CN201410174707.4A CN201410174707A CN103957620A CN 103957620 A CN103957620 A CN 103957620A CN 201410174707 A CN201410174707 A CN 201410174707A CN 103957620 A CN103957620 A CN 103957620A
- Authority
- CN
- China
- Prior art keywords
- oled
- voltage
- bipolarity
- driving method
- pwm
- 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.)
- Pending
Links
- 238000005286 illumination Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- 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]
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a driving method for bipolar OLED illumination. According to the method, an OLED panel and a power source device connected with an electrode of the OLED panel are included, the power source device outputs bipolar driving voltages or currents in a PWM mode, and the polarity of the bipolar voltages or currents can be changed within a PWM period. An OLED illumination power source achieving the driving method comprises a machine case and a control unit, regulator potentiometers of PWM, voltage and current regulating modules of the control unit are all arranged on a machine case panel, and two sets of display units are arranged and are used for displaying forward voltages or currents and backward voltages or currents respectively. The driving method and the power source have the advantages that the efficiency of the OLED illumination panel is improved, the service life of the OLED illumination panel is prolonged, and meanwhile low-power-consumption driving is achieved. If a common direct-current power source (voltages or currents) is used for driving, the mode has the defects that degradation of an OLED device is caused, and the service life of the OLED device is shortened.
Description
Technical field
The invention belongs to OLED lighting technical field, relate to the technology of improving the life-span of OLED illumination panel by driving power, be specifically related to a kind of bipolarity OLED illumination driving method and power supply.
Background technology
OLED illumination has environment compatibility and can make area source, so attract tremendous attention as follow-on illuminating device.Existing OLED illuminating device forms by the oled panel for luminous with for the power source special of driving OLED panel conventionally.According to traditional type of drive, i.e. the general power supply input form that OLED illumination drives, as shown in Figure 1, the direct voltage that OLED illumination panel is inputted by power supply or current drives.Anode (Anode) end of OLED illumination is connected with OLED+ voltage, input forward (Positive) voltage or electric current.Negative electrode (Cathode) end is connected with GND, and the form of inputting general direct current (DC) voltage or electric current drives.Because direct voltage drive can cause OLED illumination panel persistent fever, cause the thermalization (Degradation) of OLED device, cause and shorten the life-span.And, owing to adopting the oled panel of DC power supply all the time in forward conduction state, also can cause the quick aging of oled panel organic material, cause the oled panel lost of life.
Summary of the invention
The object of the invention is to adopt direct current supply to cause not long shortcoming of oled panel thermalization and life-span in order to solve the dedicated power supply apparatus of existing OLED illumination, proposed a kind of method and this supply unit that adopts bipolarity power drives OLED illumination panel.
Technical scheme of the present invention is: a kind of bipolarity OLED illumination driving method, comprise oled panel and the supply unit being connected with oled panel electrode, it is characterized in that, bipolarity driving voltage or the electric current of described supply unit output PWM form, described bipolarity voltage or electric current can change polarity at a PWM in the cycle.
Further, the forward voltage of described bipolarity voltage or electric current or current value and negative voltage or current value can independent regulation.
Further, the voltage of described PWM form or the frequency of electric current and duty ratio can independent regulation.
Further, the brightness of oled panel is by regulating the voltage of PWM form or duty ratio or forward voltage or the current value adjustment of electric current.
Further, the adjustable range of forward voltage values is 0 to 15V.
Further, the adjustable range of negative voltage value is 0 to-15V.
Realize the bipolarity OLED mains lighting supply of above-mentioned driving method, comprise cabinet, input electrode and output electrode, it is characterized in that, also comprise control unit, described control unit comprises Switching Power Supply, PWM adjustment module, Voltage Regulator Module, current regulating module and display unit, the regulator potentiometer of PWM adjustment module, Voltage Regulator Module and current regulating module is all positioned on cabinet panel, and display unit is two groups, is respectively used to show forward voltage or electric current and negative voltage or electric current.
Further, in PWM adjustment process, display unit is for display frequency and duty ratio.
Beneficial effect of the present invention: bipolarity OLED illumination driving method of the present invention and power supply have improved the efficiency of OLED illumination panel, have extended its life-span, have realized low-power consumption driving simultaneously.。Adopt general DC power supply (voltage or electric current) to drive, there is the thermalization (Degradation) and the short-life shortcoming of contracting that cause OLED device.
Accompanying drawing explanation
Fig. 1 is the power supply output waveform schematic diagram that existing OLED illumination drives;
Fig. 2 is the power supply output waveform schematic diagram that bipolarity of the present invention exchanges form;
Fig. 3 is power supply architecture schematic diagram of the present invention.
Embodiment
Following examples of the present invention are that principle according to the present invention designs, and below in conjunction with accompanying drawing and specific embodiment, the invention will be further elaborated.
As shown in Figure 2, the bipolarity OLED illumination driving method of the present embodiment, comprise oled panel and the supply unit being connected with oled panel electrode, it is characterized in that, bipolarity driving voltage or the electric current of described supply unit output PWM form, described bipolarity voltage or electric current can change polarity at a PWM in the cycle.Research shows, the recovery and long-term use that intermittently to OLED illumination panel, provide reverse voltage can contribute to OLED organic material, and then can extend the useful life of OLED illumination panel.Because the forward conduction voltage of different components may be different with reverse reparation voltage, and along with the growth of service time, the optimum value of above-mentioned voltage also may change, therefore, in order better to meet the power supply of OLED illumination panel, increase to greatest extent useful life, the method for the present embodiment is set to the forward voltage of bipolarity voltage or electric current or current value and negative voltage or current value can independent regulation.For convenient luminosity and the type of lighting that regulates panel, the voltage of PWM form of the present embodiment method or the frequency of electric current and duty ratio are set to can independent regulation.
In the method for the present embodiment, the brightness of oled panel is by regulating the voltage of PWM form or duty ratio or forward voltage or the current value adjustment of electric current.By the benefit of said method brightness adjusting, be can guarantee to supply with the voltage constant of OLED organic material, be conducive to improve electric energy conversion efficiency, there is energy-saving effect.
In order to reduce commercialization cost, increase Project Realization, according to the market demand, the present embodiment is further provided with following preferred parameter: 1, the adjustable range of forward voltage values is 0 to 15V; 2, the adjustable range of negative voltage value is 0 to-15V.
As shown in Figure 3, the present embodiment also provides a kind of bipolarity OLED mains lighting supply that realizes above-mentioned driving method, comprise cabinet, input electrode and output electrode, also comprise control unit, described control unit comprises Switching Power Supply, PWM adjustment module, Voltage Regulator Module, current regulating module and display unit, the regulator potentiometer of PWM adjustment module, Voltage Regulator Module and current regulating module is all positioned on cabinet panel, display unit is two groups, is respectively used to show forward voltage or electric current and negative voltage or electric current.In PWM adjustment process, display unit is for display frequency and duty ratio, because the realization of this function is those of ordinary skill in the art's common practise, therefore at this, do not describe in detail, and the present embodiment is not also because unexposed this common practise causes disclosing insufficient.
In device shown in the present embodiment Fig. 3, on the anode of OLED illumination panel (Anode) end, connect OLED (pos), on negative electrode (Cathode) end, connect OLED (neg), thereby realize, drive.Can adjust the voltage of the power supply of supplying from bipolarity power supply device, frequency (f), t1 (duty ratio Duty ratio) interval, form optimum condition, thereby improve the thermalization of the OLED illumination panel of having made, device stability, long-life characteristics.
AC power comprises 2 bipolarity driving power forms of anode supply (Positive) and cathode power (Negative), as shown in Figure 2, adopt Switching Power Supply, can input reverse voltage (Reverse voltage) to oled panel, thereby improve the stabilisation of OLED illuminating device, realize low-power consumption and drive.
As shown in Figure 3, on the anode of power supply (Anode) end, connect OLED (pos) power supply, then input forward (Positive) voltage or electric current.On negative electrode (Cathode) end, connect OLED (neg), negative (Negative) voltage of input or electric current.During input driving power, power supply wave shape is the AC power (voltage or electric current) of PWM form.The frequency of driving power waveform (Frequency) is 0～500kHz, and duty ratio (Duty ratio) is between 0～100%, adjusts.Adjust frequency and duty ratio (Duty ratio), the drive condition to quasi-optimal.Or the AC power of input PWM form, realize low-power consumption, high efficiency, the long-life drives.
Especially, negative (Negative) power supply of input OLED (neg), the polarity of reversion OLED illuminating device, thus improve the stabilisation of device.Regulator potentiometer a in Fig. 3 is the switch of adjusting forward power supply, and adjustable scope is 0～+ 15V or 0～2A; Regulator potentiometer b is the switch of adjusting negative sense power supply, and the scope of the driving power of adjustment is 0～-15V or 0～-2A; Regulator potentiometer c is the switch of adjusting the frequency (Frequency) of PWM AC power, and the scope of adjustment is 0～500KHz; Regulator potentiometer d is the switch of adjusting duty ratio (Duty ratio), can adjust t1 interval in Fig. 2, and the scope of adjustment is 0～100%; After charactron display unit e passes through to adjust a or b switch for demonstration, the forward of actual input and driving voltage or the electric current of negative sense, wherein charactron also can adopt other forms of display unit alternative; F in Fig. 3 is the power line being connected with negative electrode (Cathode) with the anode (Anode) of OLED illumination with g.H is the input voltage arranging in order to use drive unit, adopts AC110～220V input.
Those of ordinary skill in the art will appreciate that, embodiment described here is in order to help reader understanding's principle of the present invention, should be understood to that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not depart from essence of the present invention according to these technology enlightenments disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (8)
1. bipolarity OLED illumination driving method, comprise oled panel and the supply unit being connected with oled panel electrode, it is characterized in that, bipolarity driving voltage or the electric current of described supply unit output PWM form, described bipolarity voltage or electric current can change polarity at a PWM in the cycle.
2. bipolarity OLED illumination driving method according to claim 1, is characterized in that, the forward voltage of described bipolarity voltage or electric current or current value and negative voltage or current value can independent regulation.
3. bipolarity OLED illumination driving method according to claim 1 and 2, is characterized in that, the voltage of described PWM form or the frequency of electric current and duty ratio can independent regulation.
4. bipolarity OLED illumination driving method according to claim 3, is characterized in that, the brightness of oled panel is by regulating the voltage of PWM form or duty ratio or forward voltage or the current value adjustment of electric current.
5. bipolarity OLED according to claim 4 illumination driving method, is characterized in that, the adjustable range of forward voltage values is 0 to 15V.
6. according to the bipolarity OLED illumination driving method described in claim 4 or 5, it is characterized in that, the adjustable range of negative voltage value is 0 to-15V.
7. bipolarity OLED mains lighting supply, it is characterized in that, comprise cabinet, input electrode and output electrode, it is characterized in that, also comprise control unit, described control unit comprises Switching Power Supply, PWM adjustment module, Voltage Regulator Module, current regulating module and display unit, and the regulator potentiometer of PWM adjustment module, Voltage Regulator Module and current regulating module is all positioned on cabinet panel, display unit is two groups, is respectively used to show forward voltage or electric current and negative voltage or electric current.
8. bipolarity OLED mains lighting supply according to claim 7, is characterized in that, in PWM adjustment process, display unit is for display frequency and duty ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174707.4A CN103957620A (en) | 2014-04-28 | 2014-04-28 | Driving method and power source for bipolar OLED illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174707.4A CN103957620A (en) | 2014-04-28 | 2014-04-28 | Driving method and power source for bipolar OLED illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103957620A true CN103957620A (en) | 2014-07-30 |
Family
ID=51334805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410174707.4A Pending CN103957620A (en) | 2014-04-28 | 2014-04-28 | Driving method and power source for bipolar OLED illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103957620A (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355939A (en) * | 1999-06-09 | 2002-06-26 | 剑桥显示技术有限公司 | Light-emitting devices |
| JP2005078828A (en) * | 2003-08-28 | 2005-03-24 | Konica Minolta Holdings Inc | Illumination device and driving method of illumination device |
| US20070024539A1 (en) * | 2005-08-01 | 2007-02-01 | Bo-Yong Chung | Scan driver and organic light emitting display device having the same |
| CN1928972A (en) * | 2005-09-06 | 2007-03-14 | 精工爱普生株式会社 | Light emitting device, driving method thereof, and image forming apparatus |
| JP2007266088A (en) * | 2006-03-27 | 2007-10-11 | Matsushita Electric Works Ltd | Lighting system and illuminator for organic el |
| CN101174382A (en) * | 2006-10-31 | 2008-05-07 | Lg.菲利浦Lcd株式会社 | Organic light emitting diode display and driving method thereof |
| CN101297603A (en) * | 2005-10-26 | 2008-10-29 | 松下电工株式会社 | OLED driver, lighting device equipped with the driver, and adjustment method of the device |
| CN101313631A (en) * | 2005-11-25 | 2008-11-26 | 松下电工株式会社 | OLED driver and illuminator equipped with such driver |
| CN101527994A (en) * | 2008-03-07 | 2009-09-09 | 杨泰和 | Bipolar charging and discharging LED driving circuit |
| CN101682953A (en) * | 2007-06-05 | 2010-03-24 | 皇家飞利浦电子股份有限公司 | A lighting system for horticultural applications |
| CN201504346U (en) * | 2009-08-24 | 2010-06-09 | 东莞彩显有机发光科技有限公司 | Drive controller of OLED illuminating lamp or backlight source |
| CN202455580U (en) * | 2011-12-30 | 2012-09-26 | 华凌光电(常熟)有限公司 | Alternating current drive organic light-emitting device |
| CN102752940A (en) * | 2012-07-19 | 2012-10-24 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof |
| WO2012152641A2 (en) * | 2011-05-06 | 2012-11-15 | Osram Ag | A dimmable led driver and a method for controlling the same |
| CN202587479U (en) * | 2012-03-08 | 2012-12-05 | 厦门兴恒隆照明科技有限公司 | Intelligent LED driving power supply |
| US20120319604A1 (en) * | 2011-06-17 | 2012-12-20 | Intersil Americas Inc. | Cascade boost and inverting buck converter with independent control |
| JP5182205B2 (en) * | 2009-04-23 | 2013-04-17 | サンケン電気株式会社 | Organic EL element driving device |
| CN103260301A (en) * | 2012-06-28 | 2013-08-21 | 凹凸电子（武汉）有限公司 | Drive circuit driving light-emitting diode light source and controller |
| CN103262652A (en) * | 2011-07-14 | 2013-08-21 | 软动力学传感器公司 | Driver circuit for LEDs for time-of-flight calculation |
-
2014
- 2014-04-28 CN CN201410174707.4A patent/CN103957620A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355939A (en) * | 1999-06-09 | 2002-06-26 | 剑桥显示技术有限公司 | Light-emitting devices |
| CN1175502C (en) * | 1999-06-09 | 2004-11-10 | 剑桥显示技术有限公司 | Light-emitting devices |
| JP2005078828A (en) * | 2003-08-28 | 2005-03-24 | Konica Minolta Holdings Inc | Illumination device and driving method of illumination device |
| US20070024539A1 (en) * | 2005-08-01 | 2007-02-01 | Bo-Yong Chung | Scan driver and organic light emitting display device having the same |
| CN1928972A (en) * | 2005-09-06 | 2007-03-14 | 精工爱普生株式会社 | Light emitting device, driving method thereof, and image forming apparatus |
| CN101297603A (en) * | 2005-10-26 | 2008-10-29 | 松下电工株式会社 | OLED driver, lighting device equipped with the driver, and adjustment method of the device |
| CN101313631A (en) * | 2005-11-25 | 2008-11-26 | 松下电工株式会社 | OLED driver and illuminator equipped with such driver |
| JP2007266088A (en) * | 2006-03-27 | 2007-10-11 | Matsushita Electric Works Ltd | Lighting system and illuminator for organic el |
| CN101174382A (en) * | 2006-10-31 | 2008-05-07 | Lg.菲利浦Lcd株式会社 | Organic light emitting diode display and driving method thereof |
| CN101682953A (en) * | 2007-06-05 | 2010-03-24 | 皇家飞利浦电子股份有限公司 | A lighting system for horticultural applications |
| CN101527994A (en) * | 2008-03-07 | 2009-09-09 | 杨泰和 | Bipolar charging and discharging LED driving circuit |
| JP5182205B2 (en) * | 2009-04-23 | 2013-04-17 | サンケン電気株式会社 | Organic EL element driving device |
| CN201504346U (en) * | 2009-08-24 | 2010-06-09 | 东莞彩显有机发光科技有限公司 | Drive controller of OLED illuminating lamp or backlight source |
| WO2012152641A2 (en) * | 2011-05-06 | 2012-11-15 | Osram Ag | A dimmable led driver and a method for controlling the same |
| US20120319604A1 (en) * | 2011-06-17 | 2012-12-20 | Intersil Americas Inc. | Cascade boost and inverting buck converter with independent control |
| CN103262652A (en) * | 2011-07-14 | 2013-08-21 | 软动力学传感器公司 | Driver circuit for LEDs for time-of-flight calculation |
| CN202455580U (en) * | 2011-12-30 | 2012-09-26 | 华凌光电(常熟)有限公司 | Alternating current drive organic light-emitting device |
| CN202587479U (en) * | 2012-03-08 | 2012-12-05 | 厦门兴恒隆照明科技有限公司 | Intelligent LED driving power supply |
| CN103260301A (en) * | 2012-06-28 | 2013-08-21 | 凹凸电子（武汉）有限公司 | Drive circuit driving light-emitting diode light source and controller |
| CN102752940A (en) * | 2012-07-19 | 2012-10-24 | 矽力杰半导体技术(杭州)有限公司 | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106455227B (en) | A kind of LED linear constant-current control circuit and LED light emission device | |
| CN201039532Y (en) | A LED light-adjusting device | |
| CN105491761A (en) | LED lamp with adjustable color temperature and color temperature adjustment method of LED lamp | |
| WO2008137460A3 (en) | High power factor led-based lighting apparatus and methods | |
| CN204014221U (en) | The single colour temperature regulating circuit that drives of two-way LED illumination | |
| CN106376143B (en) | A kind of circuit of the multiple LED pixel points of single channel constant current drive control | |
| CN104093252A (en) | A flicker-free non-isolated LED constant current drive circuit | |
| CN104363685A (en) | Flyback direct-drive LED (Light Emitting Diode) power supply circuit based on current feedback and television | |
| CN105792481A (en) | Constant current controller for automatically detecting the maximum working current of light source and its detection method | |
| CN104244493A (en) | Linear high voltage LED driving circuit | |
| CN203301820U (en) | Linear high-voltage LED (Light Emitting Diode) drive circuit | |
| CN101990347A (en) | Driving and dimming method suitable for alternating current LEDs | |
| CN201904072U (en) | LED backlight circuit driven and controlled by Scaler chip in display | |
| CN201846509U (en) | LED switch dimming power source | |
| CN202353871U (en) | Constant-current adjustable driving circuit for light emitting diode (LED) lamp | |
| CN202268152U (en) | Backlight constant-current and constant-voltage driving circuit for display screen | |
| CN103672798A (en) | Adjustable-light daylight lamp controlled by section switch | |
| CN103672799A (en) | Adjustable-light down light controlled by section switch | |
| CN103957620A (en) | Driving method and power source for bipolar OLED illumination | |
| CN203136246U (en) | Dimming circuit suitable for linear high-voltage LED driver | |
| CN102779486A (en) | LED (Light-Emitting Diode) driving circuit capable of regulating current balance by negative voltage | |
| CN103906315A (en) | AC-LED drive circuit low in THD and high in current control precision | |
| CN203645892U (en) | Constant current adjustable backlight circuit | |
| CN103957637A (en) | OLED lighting driving device of low power consumption | |
| WO2017173871A1 (en) | Light-emitter and plant growth modulation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |
|
| RJ01 | Rejection of invention patent application after publication |