CN102768315A - System for testing brightness characteristic of organic electroluminescent device - Google Patents
System for testing brightness characteristic of organic electroluminescent device Download PDFInfo
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- CN102768315A CN102768315A CN2012102580214A CN201210258021A CN102768315A CN 102768315 A CN102768315 A CN 102768315A CN 2012102580214 A CN2012102580214 A CN 2012102580214A CN 201210258021 A CN201210258021 A CN 201210258021A CN 102768315 A CN102768315 A CN 102768315A
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Abstract
The invention discloses a system for testing the brightness characteristic of an organic electroluminescent device, comprising a clamp, a brightness testing module, a testing system base, a voltage-current source meter and a computer, wherein the clamp is fixedly provided with the organic electroluminescent device; the clamp is vertically fixed on the testing system base on which the brightness testing module is vertically fixed; the voltage-current source meter can be connected with the computer and controlled by the computer; and a voltage-current source is controlled by the electronic computer to provide power for the electroluminescent device and measure a response signal of the electroluminescent device and an output signal of the brightness testing module, so that the photoelectric characteristic of the organic electroluminescent device can be obtained. The system for testing the brightness characteristic of the organic electroluminescent device is simple in structure, convenient and flexible in use, convenient to implement and capable of rapidly measuring the current-voltage brightness characteristics of the organic electroluminescent device in a larger range.
Description
Technical field
The present invention relates to the organic electroluminescence device measuring technology, relate in particular to a kind of test macro of organic electroluminescence device light characteristic.
Background technology
Organic electroluminescence device is a kind of a kind of new type light source after the inorganic semiconductor light emitting diode.Be different from traditional inorganic semiconductor light emitting diode, it uses organic film material as luminescent material, and the organic materials different through chemosynthesis can be so that device obtains the emergent light of different colours.Secondly, organic electroluminescence device is a surface light-emitting device, can under the situation of not using any external parts, realize the large tracts of land uniformly light-emitting.Once more, but it has the characteristics of frivolous flexibility.This technology can be used for various fields such as military affairs, medical treatment, engineering, amusement and education, becomes a focus of lighting display technology using area research on the our times.
In the development process of organic electroluminescence device, the current/voltage light characteristic of measuring element is a requisite test event.Through analyzing the current/voltage light characteristic of organic electroluminescence device, quality that can the comparative device performance, thus device is optimized research, all have great significance for research and commercial production organic electroluminescence device.
The electric current and voltage luminance test of organic electroluminescence device mainly contains two kinds of test modes, and a kind of is the steady current method of testing, promptly through device is applied particular current signal, measures the brightness of the voltage and the emergent light at its two ends; Another kind is the constant voltage method of testing, through device being applied the specific voltage signal, measures the brightness through its size of current and emergent light.Wherein, more commonly used with the constant voltage method of testing.At present, measure organic electroluminescence device and mainly use special-purpose testing apparatus to measure, perhaps use colourity nitometer test system building such as BM7, PR650.Such testing apparatus has the measuring accuracy height, the automaticity advantages of higher.But simultaneously, it costs an arm and a leg, and function is fixing with operation, is difficult for changing according to tester's demand.
Therefore, those skilled in the art is devoted to develop a kind of simple and easy effective organic electroluminescence device light characteristic test macro, and the current/voltage luminance test characteristic of organic electroluminescence device is measured.
Summary of the invention
In view of above-mentioned technological deficiency, the invention provides a kind of system of the simple and easy light characteristic of organic electroluminescence device easily, make it possible to use lower cost to measure the current/voltage light characteristic of organic electroluminescence device effectively.Through using general purpose personal computer Control current voltage source table that organic electroluminescence device is supplied power, current/voltage source table is measured the electrical response signal of organic electroluminescence device and the output signal of luminance test module simultaneously.The test data of computer acquisition current/voltage source table can be analyzed the current/voltage light characteristic that obtains organic electroluminescence device.
For realizing above-mentioned purpose, the test macro of organic electroluminescence device light characteristic of the present invention comprises the anchor clamps, luminance test module, test macro base, electric current and voltage source table, the computing machine that are fixed with organic electroluminescence devices; Said clip vertical is fixed on the said test macro base, and said luminance test module is vertically fixed on the said test macro base, and said electric current and voltage source table can link to each other with said computing machine, accepts the control of said computing machine.
The test macro of above-mentioned organic electroluminescence device light characteristic; Wherein, Said clamps organic electroluminescence device, and the electrode of said organic electroluminescence device is connected with said test macro base through said anchor clamps, so that to this organic electroluminescence device power supply.
The test macro of above-mentioned organic electroluminescence device light characteristic, wherein, said luminance test module comprises photoelectric sensor, converts visible light signal to be associated with visible light brightness electric signal through said photoelectric sensor, is voltage or electric current output.
The test macro of above-mentioned organic electroluminescence device light characteristic, wherein, said photoelectric sensor is photodiode, phototriode or photoresistance, its light receiving surface is towards organic electroluminescence device.
The test macro of above-mentioned organic electroluminescence device light characteristic, wherein, keeping parallelism and height such as grade between said anchor clamps and the said luminance test module.
The test macro of above-mentioned organic electroluminescence device light characteristic, wherein, said current/voltage source table output current measuring voltage, or output voltage is measured electric current, the response signal of while measuring element and the output signal of said luminance test module.
The test macro of above-mentioned organic electroluminescence device light characteristic, wherein, the said current/voltage of said computer control source table output signal specific, and gather the signal data that said current/voltage source table measures, and analyze and obtain device property.
The present invention is simple in structure, and is easy to use flexible, is convenient to realize, can in a big way, measure the current/voltage light characteristic of organic electroluminescence device apace.
Description of drawings
Fig. 1 is the current/voltage light characteristic test macro synoptic diagram of the organic electroluminescence device of a preferred embodiment of the present invention;
Fig. 2 is the luminance test module circuit diagram.
Embodiment
Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.
In preferred embodiments of the present invention, native system mainly comprises following module: be fixed with anchor clamps, luminance test module, test macro base, the electric current and voltage source table of organic electroluminescence devices, computing machine.Organic electroluminescence device is fixed in the anchor clamps, and through connector it is vertically fixed on the test macro base; The luminance test module is also passed through the connector vertical fixing in the test macro base, and keeps the parallel grade with organic electroluminescence device of luminance test module height; Anchor clamps, luminance test module, test macro base will place under the dark surrounds during measurement; Show power supply to be provided through computer control electric current and voltage source, simultaneously the response signal of measuring element and the output signal of luminance test module to device.Through the data analysis of computing machine, just can obtain the current/voltage luminosity response of organic electroluminescence device.
Be fixed with the anchor clamps of organic electroluminescence devices, be used for fixing organic electroluminescence device, and the electrode of organic electroluminescence device is connected with the system testing base plate through anchor clamps, so that device is supplied power;
The luminance test module, it converts visible light signal to electric signal through photoelectric sensor.Photoelectric sensor commonly used can be photodiode, photoresistance etc.When sensor received the radiation of visible light of different brightness, its physical parameter changed, and used change-over circuit and amplifying circuit etc., just can obtain the electric signal that is associated with visible light brightness.Use standard sources that the luminance test module is proofreaied and correct, can obtain the relation of its output electric signal and test brightness, thereby can carry out the measurement of brightness.
The test macro base is used for fixing anchor clamps and luminance test module, makes organic electroluminescence device and luminance test module perpendicular to base, and keeping parallelism also waits height between the above two, so that measure.
Electric current and voltage source table is used for to organic electroluminescence device power supply being provided, simultaneously the response signal of measuring element and the output signal of luminance test module;
Computing machine is used for Control current voltage source table output signal specific, and gathers the signal data that current/voltage source table measures, and analyzes and obtain device property.
As shown in Figure 1, be the current/voltage light characteristic test macro synoptic diagram of organic electroluminescence device.Wherein, organic electroluminescence device anchor clamps 1 and luminance test module 2 vertical fixing are on test macro base 3, and the two keeping parallelism.Current/voltage source table 4 is supplied power to organic electroluminescence device 11 through the interface 31 on the test macro base 3, and the output signal of measuring element response and luminance test module 2.Computing machine 5 is connected to current/voltage source table 4, the size of Controlling Source table 4 output, and the data message that acquisition source table 4 measures, and final analysis obtains the current/voltage light characteristic of organic electroluminescence device 11.
Organic electroluminescence device anchor clamps 1, it is fixed therein organic electroluminescence device 11 on the one hand, and the electrode with device 11 is connected with test system backplane 3 on the other hand.
Current/voltage source table 4 has used two single pass source table Keithley 2400 in this example.Wherein, first source table 41 is used for power supply being provided for organic electroluminescence device 11 through interface 31, and the response signal of measuring element, the output signal of second source table 42 Measurement of Luminance test module 2.Current/voltage source table 4 also can use the source table of other types to replace.
The computing machine 5 of present embodiment is used for Control current voltage source table 4 and gather its measurement data.Is furnished with gpib interface on the computing machine 5, so that be connected with Keithley 2400.Use Labview software that Keithley is controlled and image data and analysis on the computing machine.
The computing machine 5 of present embodiment also can adopt the interface of other types to be connected with current/voltage source table 4 as required, also can use the software of other types, and for example C++ comes Control current voltage source table 4.
As shown in Figure 2, be the example circuit diagram of luminance test module 2.Among this embodiment, use photodiode to be sensor, this sensor produces the photogenerated current of different sizes under different illumination intensity.
The described circuit diagram of present embodiment comprises two parts.The change-over circuit that first is made up of operational amplifier A P1 is transformed into voltage signal with photogenerated current through resistance R 1.The amplifying circuit that second portion is made up of operational amplifier A P2 is adjusted the signal magnification ratio through the variation of ratio between variable resistor R3 and the fixed resistance R2, so that obtain suitable output signal.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (7)
1. the test macro of an organic electroluminescence device light characteristic is characterized in that, comprises the anchor clamps, luminance test module, test macro base, electric current and voltage source table, the computing machine that are fixed with organic electroluminescence devices; Said clip vertical is fixed on the said test macro base, and said luminance test module is vertically fixed on the said test macro base, and said electric current and voltage source table links to each other with said computing machine, accepts the control of said computing machine.
2. the test macro of organic electroluminescence device light characteristic as claimed in claim 1; It is characterized in that; Said clamps organic electroluminescence device; And the electrode of said organic electroluminescence device is connected with said test macro base through said anchor clamps, so that to this organic electroluminescence device power supply.
3. the test macro of organic electroluminescence device light characteristic as claimed in claim 1; It is characterized in that; Said luminance test module comprises photoelectric sensor, converts visible light signal to be associated with visible light brightness electric signal through said photoelectric sensor, is voltage or electric current output.
4. the test macro of organic electroluminescence device light characteristic as claimed in claim 3 is characterized in that, said photoelectric sensor is photodiode, phototriode or photoresistance, and its light receiving surface is towards organic electroluminescence device.
5. the test macro of organic electroluminescence device light characteristic as claimed in claim 1 is characterized in that, keeping parallelism and height such as grade between said anchor clamps and the said luminance test module.
6. the test macro of organic electroluminescence device light characteristic as claimed in claim 1; It is characterized in that; Said current/voltage source table output current measuring voltage, or output voltage is measured electric current, the response signal of while measuring element and the output signal of said luminance test module.
7. the test macro of organic electroluminescence device light characteristic as claimed in claim 1; It is characterized in that; The said current/voltage of said computer control source table output signal specific, and gather the signal data that said current/voltage source table measures, and analyze and obtain device property.
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| CN2012102580214A CN102768315A (en) | 2012-07-24 | 2012-07-24 | System for testing brightness characteristic of organic electroluminescent device |
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Cited By (2)
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| CN104181450A (en) * | 2014-09-02 | 2014-12-03 | 中国科学院半导体研究所 | System and method for testing light-emitting diode response characteristics |
| CN104575346A (en) * | 2015-01-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Organic ELD (electroluminescent display) panel detection method and device |
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| CN104181450A (en) * | 2014-09-02 | 2014-12-03 | 中国科学院半导体研究所 | System and method for testing light-emitting diode response characteristics |
| CN104575346A (en) * | 2015-01-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Organic ELD (electroluminescent display) panel detection method and device |
| CN104575346B (en) * | 2015-01-28 | 2017-03-22 | 京东方科技集团股份有限公司 | Organic ELD (electroluminescent display) panel detection method and device |
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Application publication date: 20121107 |