CN103957637A - OLED lighting driving device of low power consumption - Google Patents
OLED lighting driving device of low power consumption Download PDFInfo
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- CN103957637A CN103957637A CN201410175896.7A CN201410175896A CN103957637A CN 103957637 A CN103957637 A CN 103957637A CN 201410175896 A CN201410175896 A CN 201410175896A CN 103957637 A CN103957637 A CN 103957637A
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Abstract
The invention provides an OLED lighting driving device of low power consumption which comprises a machine box, an input electrode and an output electrode. The OLED lighting driving device of low power consumption further comprises a control unit, the control unit comprises a switch power supply, a PWM adjusting module, a voltage adjusting module, a current adjusting module and display units, adjusting potentiometers of the PWM adjusting module, the voltage adjusting module and the current adjusting module are all located on a panel of the machine box, and two sets of display units are used for displaying forward voltage or current and negative voltage or current. The OLED lighting driving device of low power consumption has the advantages that through adjusting the voltage value of the PWM waveform, a light emitting layer of an OLED lighting panel keeps working in a high conversion efficiency state, and light emitting brightness adjustment of the OLED lighting panel is achieved through adjusting the duty ratio of the PWM waveform. By means of the mode, the efficiency of the OLED lighting panel is improved, the service life is prolonged, and low power consumption driving is achieved.
Description
Technical field
The invention belongs to OLED lighting technical field, relate to the Driving technique of OLED illumination panel, be specifically related to a kind of OLED lighting driving device of low-power consumption.
Background technology
OLED illumination attracts tremendous attention because having environment compatibility and can making area source as follow-on illuminating device.Common OLED lighting device mainly forms by the oled panel for luminous with for the power supply of driving OLED panel.Be illustrated in figure 1 the general power supply input form that OLED illumination drives, according to this traditional direct voltage of being inputted by power supply or the mode of 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, inputting general direct current (DC) voltage or the form of electric current drives, there is following defect: 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 the brightness of OLED luminescent layer is not directly proportional to driving voltage or electric current, therefore in the time adjusting brightness, the electric energy conversion efficiency of OLED can change, and particularly, in the time that low-light level is worked, the electric energy conversion efficiency of OLED is lower.
Summary of the invention
The object of the invention is to adopt DC driven to cause can not making the maximized deficiency of electric energy conversion efficiency in the time adjusting OLED brightness of illumination in order to solve existing OLED illumination driving power source, proposed a kind of OLED lighting driving device of low-power consumption.
Technical scheme of the present invention is: low power consumption OLED lighting driving device, 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, 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.
Further, control unit comprises the counter for obtaining output voltage frequency.
Further, the frequency of described voltage or electric current and duty ratio can independent regulation.
Further, the adjustable range of magnitude of voltage is 0 to 15V.
Further, the adjustable range of current value is 0～2A.
Beneficial effect of the present invention: low power consumption OLED lighting driving device of the present invention can make the luminescent layer of OLED illumination panel work in all the time high transformation efficiency state by the magnitude of voltage of adjusting PWM waveform, and the duty ratio of simultaneously adjusting PWM waveform realizes the adjusting to OLED illumination panel luminosity.By adopting aforesaid way to improve the efficiency of OLED illumination panel, extend its life-span, 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.
Brief description of the drawings
Fig. 1 is general power supply input form waveform schematic diagram;
Fig. 2 is the power supply input form schematic diagram of low power consumption OLED lighting driving device of the present invention;
Fig. 3 is the structural representation of low power consumption OLED lighting driving device of the present invention.
Embodiment
Following examples 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 Figures 2 and 3, the low power consumption OLED lighting driving device of the present embodiment, 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, and display unit is two groups, is respectively used to show forward voltage or electric current and negative voltage or electric current.In order to improve the stability of system, control unit preferably adopts the hardware system of the composition such as counter, clock unit to realize.Due to the implementation of the above-mentioned hardware system common practise that is this area, therefore do not describe in detail at this.In addition, regulate in order to realize accurate visuality, save the complexity that shows resource, reduces system simultaneously, in PWM adjustment process, display unit is used for display frequency and duty ratio, and does not separately establish the display unit for display frequency and duty ratio.Because the realization of above-mentioned functions is also the common practise of this area, therefore no longer describe in detail.Owing to adopting the system of hardware integration to be more conducive to improve the stability of system, therefore control unit optimal way is to adopt counter to realize obtaining of output voltage frequency.
Because electric current and voltage is mainly the adjusting for different components characteristic, device efficiency is maximized, and duty cycle adjustment is the brightness for regulating OLED illumination panel, the two functional independence, therefore in order to bring into play better the function of above-mentioned module, the frequency of voltage or electric current and duty ratio have adopted the mode of independent regulation in the present embodiment.For the development trend of most OLED illuminating product and product on market, the adjustable range of the magnitude of voltage of the drive unit of the present embodiment is 0 to 15V; The adjustable range of current value is 0～2A.
Adopt the drive unit of the present embodiment, can improve input DC power (voltage or electric current) in the driving method of Fig. 1, make OLED device generation thermalization and the short-life problem of contracting.As shown in Figure 3, on anode (Anode) end of the low power consumption OLED lighting driving device of the present embodiment, connect OLED+ power supply, then input forward (Positive) voltage or electric current.On negative electrode (Cathode) end, connect GND.When input driving power, power supply wave shape is the AC power (voltage or electric current) of PWM form.The frequency (Frequency) of driving power waveform is 0～500kHz, and duty ratio (Duty ratio) can be adjusted between 0～100%.Adjust frequency and duty ratio (Duty ratio), to the drive condition of quasi-optimal.Or the AC power of input PWM form, realize low-power consumption, high efficiency, the long-life drives.
In Fig. 3, a is the regulon of adjusting OLED+ power supply, is positioned on device panel, can adjust the driving power of 0～15V or 0～2A; B is the switch of adjusting the frequency (Frequency) of PWM AC power, and the scope of adjustment is 0～500kHz; C is the switch of adjusting duty ratio (Duty ratio), can adjust the t1 interval of Fig. 2, can in 0～100% scope, adjust; D represents, after adjusting a switch, and voltage or the electric current of actual input.The demonstration of d also has a supplementary function, can be according to the voltage of input or the variation of electric current, demonstrate the current/voltage of consumption, can also show frequency, duty ratio (Duty ratio), e and f are the anodes (Anode) throwing light on OLED, the power line that negative electrode (Cathode) connects; G is in order to use drive unit, and the input voltage arranging adopts AC110～220V.
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 (6)
1. low power consumption OLED lighting driving device, 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.
2. low power consumption OLED lighting driving device according to claim 1, is characterized in that, in PWM adjustment process, display unit is for display frequency and duty ratio.
3. low power consumption OLED lighting driving device according to claim 1 and 2, is characterized in that, control unit comprises the counter for obtaining output voltage frequency.
4. low power consumption OLED lighting driving device according to claim 3, is characterized in that, the frequency of described voltage or electric current and duty ratio can independent regulation.
5. low power consumption OLED lighting driving device according to claim 4, is characterized in that, the adjustable range of magnitude of voltage is 0 to 15V.
6. according to the low power consumption OLED lighting driving device described in any one claim of claim 3-5, it is characterized in that, the adjustable range of current value is 0 to-2A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410175896.7A CN103957637A (en) | 2014-04-28 | 2014-04-28 | OLED lighting driving device of low power consumption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410175896.7A CN103957637A (en) | 2014-04-28 | 2014-04-28 | OLED lighting driving device of low power consumption |
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| CN202455581U (en) * | 2012-02-21 | 2012-09-26 | 四川虹视显示技术有限公司 | Lighting device with OLED (Organic Light Emitting Diode) driven by PWM (Pulse Width Modulation) |
| CN102917499A (en) * | 2012-10-19 | 2013-02-06 | 西安文理学院 | DC (Direct Current)/DC-based LED (Light Emitting Diode) driving controller for lighting |
| CN103385038A (en) * | 2011-01-17 | 2013-11-06 | 美光工具公司 | Multi-mode portable lighting device |
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2014
- 2014-04-28 CN CN201410175896.7A patent/CN103957637A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2783695Y (en) * | 2005-02-25 | 2006-05-24 | 厦门万能达电子发展有限公司 | Moveable power source box for LED illumination lamp set |
| CN2932821Y (en) * | 2006-06-13 | 2007-08-08 | 天津市雅量电子科技有限公司 | Microprocessor-controlled power supply device |
| CN201341101Y (en) * | 2008-12-30 | 2009-11-04 | 北京九州佳佳光电科技有限公司 | Solar energy portable power supply |
| CN101466186A (en) * | 2008-12-31 | 2009-06-24 | 张家瑞 | Driving method and driving device capable of adjusting brightness of high-power LED |
| CN201656536U (en) * | 2010-04-12 | 2010-11-24 | 郑州众智电子设备有限公司 | Automatic floating charger of generator set storage battery |
| CN103385038A (en) * | 2011-01-17 | 2013-11-06 | 美光工具公司 | Multi-mode portable lighting device |
| CN102130598A (en) * | 2011-03-21 | 2011-07-20 | 天津市东文高压电源厂 | Pulse width modulation push-pull type positive output electrostatic spinning high-voltage complete machine power supply |
| CN202455581U (en) * | 2012-02-21 | 2012-09-26 | 四川虹视显示技术有限公司 | Lighting device with OLED (Organic Light Emitting Diode) driven by PWM (Pulse Width Modulation) |
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Application publication date: 20140730 |