CN105973548A - Water vapor transmittance testing clamp based on active metal electrical method - Google Patents
Water vapor transmittance testing clamp based on active metal electrical method Download PDFInfo
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- CN105973548A CN105973548A CN201610296409.1A CN201610296409A CN105973548A CN 105973548 A CN105973548 A CN 105973548A CN 201610296409 A CN201610296409 A CN 201610296409A CN 105973548 A CN105973548 A CN 105973548A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
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Abstract
The invention discloses a water vapor transmittance testing clamp based on an active metal electrical method. The water vapor transmittance testing clamp comprises a clamp cover and a clamp base, wherein external threads are arranged outside the clamp base, and a testing cavity is arranged in the clamp base and provided with an insulation clamping slot for housing a package device. The insulation clamping slot is provided with a through hole, and the through hole is used for placing a test probe which is in contact with a test electrode of the package device. Internal threads corresponding to the external threads on the clamp base are provided in the interior the clamp cover. In the process of measuring the water vapor transmittance based on the active metal (calcium, magnesium, etc.) electrical method, the package device is clamped with the water vapor transmittance testing clamp for measurement, thereby effectively improving the accuracy of the measurement result and the stability of the testing process. The water vapor transmittance testing clamp is applicable for measurement of packaging devices of various specifications and has the advantages of high test efficiency, low manufacture cost and easy operation.
Description
Technical field
The present invention relates to testing vapor transmission fixture, a kind of based on active metal electric method and test fixture that packaging water vapor transmittance can be measured under various temperature and humidity conditions.
Background technology
Organic electroluminescence device (OLED) has active illuminating, low in energy consumption, fast response time, operating temperature range width, can realize the features such as Flexible Displays, is with a wide range of applications in illumination and display field.But service life is short is one of key issue restricting OLED industrialization, mainly OLED especially sensitive to the water oxygen in environment (especially steam).Therefore, high reliability packaging technology becomes one of key issue being badly in need of solution, and water vapor transmittance is to evaluate the topmost technical parameter of packaging performance, so water vapor transmittance carries out the basis that high-precision test is research encapsulation performance.
At present, the method used for measuring the maturing apparatus of water vapor transmittance on the market mainly has coulomb coulometry and radiosiotope tracer method.The former is to utilize coulomb electrical quantity sensor to detect, but its measuring accuracy is only 5 × 10-5 g·m-2·d-1, it is impossible to reach the test request of OLED encapsulation performance；The certainty of measurement of the latter can reach 2 × 10-7 g·m-2·d-1, but this method of testing somewhat expensive, the radioactive substance of employing has certain danger, and harsh to test equipment and environmental requirement, the experiment parameter simultaneously related to is more, it is difficult to control.Consider certainty of measurement to require and test environment requirement, a lot of laboratory environments gradually adopt active metal (calcium, magnesium etc.) electric method to carry out the test of water vapor transmittance, the method mainly utilizes the vivacious type of metal, with it as test sensor, by the change of active metal resistance value, water vapor transmittance is evaluated.This method of testing is quick, simple, and certainty of measurement reaches 1 × 10-6 g·m-2·d-1, it is possible to meet the test request of OLED packaging performance.
In prior art, utilize the test system of active metal (calcium, magnesium etc.) electric method test water vapor transmittance, the test electrode generally using alligator clamp directly to clamp packaging is measured for active metal resistance value measure, but when the water vapor transmittance of OLED encapsulation performance being measured based on active metal (calcium, magnesium etc.) electric method, its measurement accuracy depends primarily on the accurate measurement to active metal resistance change, directly the metering system of clamping is easy to, by external interference, affect the accuracy of measurement result；Also the test system having part comparative maturity uses the mode of clamp, fixture is utilized to fix packaged sample, measure again, this test mode can be effectively improved the accuracy of measurement, but due to factors such as structure imperfections, can typically be only used to measure under specific humiture environment, and the packaging specification that can test is single, it is difficult to meet more measurement demand.
Summary of the invention
In order to overcome the existing deficiency measured based on active metal (calcium, magnesium etc.) electric method and do not use the test fixture of test fixture and use to be difficult to meet more measurement demand in the test system of water vapor transmittance, it is an object of the invention to provide a kind of simple structure, Quick-clamped, and can be used under various humiture environment, different size packaging being carried out the test fixture of water vapor transmittance measurement.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of testing vapor transmission fixture based on active metal electric method, including clamp cover and clamping fixture seat, external screw thread is offered outside described clamping fixture seat, it is internally provided with test chamber, being provided with the insulation draw-in groove for placing packaging in described test chamber, described insulation draw-in groove offers through hole, places test probe in described through hole, described test probe and the test contact electrode of packaging, offer the female thread that the external screw thread offered with clamping fixture seat is connected inside described clamp cover.
Offer cylinder table inside described clamp cover, when described clamp cover and clamping fixture seat are threaded connection clamping, described cylinder table in the vertical direction hold out against packaging, so that described packaging keeps good contact with test probe.
Described insulation draw-in groove is equipped with multiple different size, and convenient dismounting as required.
Described test probe end is provided with test winding displacement, is external on test instrunment by described test winding displacement.
Described clamp cover and clamping fixture seat use aluminum alloy materials to make, and described insulation draw-in groove uses POM plastic to make.
The present invention compared with prior art, has following obvious outstanding feature and a remarkable advantage:
During measuring water vapor transmittance based on active metal (calcium, magnesium etc.) electric method, start again after using the present invention that packaging is clamped to measure, it is possible to be effectively improved the accuracy of measurement result and the stability of test process；Fixture uses the clamping mode that screw thread screws, the test electrode making packaging keeps good contact with test probe, use aluminum alloy material to make plus jig main body, the water vapor transmittance under various temperature and humidity conditions can be can be consequently used for measure in continuous firing under hot and humid environment；Additionally fixture is internal adds interchangeable insulation draw-in groove, one can separate jig main body (aluminum alloy material) tests electrode on packaging, avoid them to contact with each other, eliminate the measurement error produced due to electrode contact, two come by changing insulation draw-in groove, it is possible to adapt to the packaging of different size；The batch production simple, convenient of fixture overall structure, it is possible to realize to while multiple samples, quickly, efficiently measure.
Accompanying drawing explanation
Fig. 1 is the test fixture integral installation distribution structure schematic diagram of the present invention.
Fig. 2 is the test fixture integral installation distribution structure schematic diagram without clamp cover of the present invention.
Fig. 3 is the test fixture entirety generalized section of the present invention.
Fig. 4 is the test fixture entirety 3D exploded perspective view of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is illustrated.
As shown in Figures 1 to 4, a kind of testing vapor transmission fixture based on active metal electric method, including clamp cover 1 and clamping fixture seat 2, described clamping fixture seat 2 is outside offers external screw thread, it is internally provided with test chamber, the insulation draw-in groove 3 for placing packaging 6 it is provided with in described test chamber, described insulation draw-in groove 3 offers through hole, test probe 4 is placed in described through hole, described test probe 4 and the test contact electrode of packaging 6, described clamp cover 1 is internal offers the female thread that the external screw thread offered with clamping fixture seat 2 is connected.
As it is shown in figure 1, in the present embodiment, clamp cover 1 is opened above a large through-hole and eight small through hole so that in test process the steam in surrounding above clamp cover 1 well into fixture inside.
As in figure 2 it is shown, described clamping fixture seat 2 is internally provided with test chamber, described test chamber is internally provided with the insulation draw-in groove 3 for placing packaging.The generally test electrode of packaging 6 is all disposed within the edge of packaging 6, therefore in test process, test electrode can encounter clamp body, again because clamp body uses aluminum alloy material to make, so when testing electrode and directly contacting, the resistance measurement that can cause metal is inaccurate, and then affects the calculating of water vapor transmittance.After adding the insulation draw-in groove 3 that POM plastic material is made, packaging 6 is separated effectively with clamp body, it is possible to avoid the measurement error caused due to the electrode tip change in resistance of packaging.Further, clamping fixture seat 2 and insulation draw-in groove 3 all offer square groove, so that the steam in surrounding can be well into fixture inside below clamping fixture seat 2 during measuring, in conjunction with the through hole that clamp cover 1 described above is opened above, can ensure that the steam in test environment can abundant must enter in test chamber, it is to avoid owing to the use of fixture causes the water vapour environment inside and outside fixture inconsistent.
The most described insulation draw-in groove 3 offers through hole, and through hole is used for placing test probe 4, with the test contact electrode on packaging in test process.In addition, difference is put in size dimension position different, test electrode for packaging 6, devise the insulation draw-in groove 3 of different size for measuring selection, the packaging size tested as required and test electrode position, select corresponding insulation draw-in groove 3 to be replaced.As for the lead to the hole site design (putting position of test probe) on insulation draw-in groove 3, it is to use Kelvin's four probe method to carry out putting design, the i.e. measurement to each calcium electric resistance value is respectively provided with 4 test points (4 groups test probe) and measures, so the impact that contact resistance brings must effectively can be eliminated, resistance actual measured value is made to be the actual value of measured resistance, also to ensure that there is good Ohmic contact in test process, often group test probe have employed the design of double probe.
As shown in Figure 3, described clamp cover 1 and clamping fixture seat 2 are cylinder design, clamp cover 1 is internal offers female thread, clamping fixture seat 2 column part offers corresponding external screw thread, therefore clamp cover 1 and clamping fixture seat 2 are threaded connection realization Guan Bi clamping, additionally, clamp cover 1 is internal offers Small Cylindrical platform, when clamp cover 1 is threaded connection and is closely placed on clamping fixture seat 2, described Small Cylindrical platform just in the vertical direction holds out against packaging 6, horizontal direction location in conjunction with insulation draw-in groove 3, the test probe 4 with elastic syringe needle is made on test electrode on packaging 6 and insulation draw-in groove 3 to keep good contact.Further, the elastic needle head end of test probe 4 and the test contact electrode of packaging 6, the other end is then external to test instrunment end by test winding displacement 5.Owing to test needs, the most whole test fixture to be put in the accelerated ageing environment that humiture is higher together with packaging, utilize test winding displacement 5 to carry out cabling and effectively can must connect the test instrunment outside the test fixture in ageing environment and packaging and ageing environment, keep long-time and effectively measure.
When using the present invention, outward winding clamp cover 1, size according to packaging 6 and the position at test electrode place thereof, suitably insulation draw-in groove 3 is selected to load clamping fixture seat 2, put into packaging 6 after installing, clamp cover 1 is threaded connection and is tightened on clamping fixture seat 2, then one end of test winding displacement 5 is connected with the lower end of test probe 4, the other end attaches on background test instrument, is finally put in required humiture environment together with test fixture by packaging 6 and measures.
Claims (5)
1. a testing vapor transmission fixture based on active metal electric method, including clamp cover (1) and clamping fixture seat (2), it is characterized in that: described clamping fixture seat (2) is outside offers external screw thread, it is internally provided with test chamber, the insulation draw-in groove (3) for placing packaging (6) it is provided with in described test chamber, described insulation draw-in groove (3) offers through hole, test probe (4) is placed in described through hole, described test probe (4) and the test contact electrode of packaging (6), described clamp cover (1) is internal offers the female thread that the external screw thread offered with clamping fixture seat (2) is connected.
Testing vapor transmission fixture based on active metal electric method the most according to claim 1, it is characterized in that: described clamp cover (1) is internal offers cylinder table, when described clamp cover (1) is threaded connection clamping with clamping fixture seat (2), described cylinder table in the vertical direction hold out against packaging (6) so that described packaging with test probe (4) keep good contact.
Testing vapor transmission fixture based on active metal electric method the most according to claim 1, it is characterised in that: described insulation draw-in groove is equipped with multiple different size, and convenient dismounting as required.
Testing vapor transmission fixture based on active metal electric method the most according to claim 1, it is characterised in that: described test probe (4) end is provided with test winding displacement (5), is external on test instrunment by described test winding displacement (5).
Testing vapor transmission fixture based on active metal electric method the most according to claim 1, it is characterised in that: described clamp cover (1) and clamping fixture seat (2) use aluminum alloy materials to make, and described insulation draw-in groove (3) uses POM plastic to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610296409.1A CN105973548B (en) | 2016-05-07 | 2016-05-07 | Testing vapor transmission fixture based on active metal electric method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610296409.1A CN105973548B (en) | 2016-05-07 | 2016-05-07 | Testing vapor transmission fixture based on active metal electric method |
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| CN105973548A true CN105973548A (en) | 2016-09-28 |
| CN105973548B CN105973548B (en) | 2019-04-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108044542A (en) * | 2017-12-27 | 2018-05-18 | 合肥知常光电科技有限公司 | A kind of optical element quick-replaceable positioner |
| CN108074833A (en) * | 2017-12-18 | 2018-05-25 | 武汉华星光电半导体显示技术有限公司 | A kind of testing film and for assessing the gauge of thin-film package performance and test method |
| CN114563325A (en) * | 2022-03-15 | 2022-05-31 | 中国科学院苏州纳米技术与纳米仿生研究所 | Device and method for testing water permeability by electrical Ca membrane method |
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Cited By (4)
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| CN108074833A (en) * | 2017-12-18 | 2018-05-25 | 武汉华星光电半导体显示技术有限公司 | A kind of testing film and for assessing the gauge of thin-film package performance and test method |
| CN108074833B (en) * | 2017-12-18 | 2021-03-02 | 武汉华星光电半导体显示技术有限公司 | Test film, jig for evaluating film packaging performance and test method |
| CN108044542A (en) * | 2017-12-27 | 2018-05-18 | 合肥知常光电科技有限公司 | A kind of optical element quick-replaceable positioner |
| CN114563325A (en) * | 2022-03-15 | 2022-05-31 | 中国科学院苏州纳米技术与纳米仿生研究所 | Device and method for testing water permeability by electrical Ca membrane method |
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| CN105973548B (en) | 2019-04-16 |
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