CN105759136A - Detection method for failure mechanism of flexible RFID electronic tag during silver paste printing process - Google Patents
Detection method for failure mechanism of flexible RFID electronic tag during silver paste printing process Download PDFInfo
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- CN105759136A CN105759136A CN201410791193.7A CN201410791193A CN105759136A CN 105759136 A CN105759136 A CN 105759136A CN 201410791193 A CN201410791193 A CN 201410791193A CN 105759136 A CN105759136 A CN 105759136A
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Abstract
The invention relates to a detection method for the failure mechanism of a flexible RFID electronic tag during the silver paste printing process. The method specifically comprises the steps of selecting a plurality of RFID electronic tags printed by the conductive ink; selecting four different temperature and humidity conditions; placing the RFID electronic tags in a constant-temperature and constant-humidity test box; measuring the reading and writing situation and the direct-current resistance value, recording the resistance value and judging whether the normal reading-writing operation is enabled or not; recording the service life of each RFID electronic tag that changes in conductivity in each temperature and humidity condition; according to the detection result, determining the failure mechanism of the flexible RFID electronic tag during the silver paste printing process. According to the technical scheme of the invention, the failure mechanism of the printed RFID electronic tag in different temperature and humidity conditions can be detected. Meanwhile, the method is intuitive, simple and easy to operate, and fast and accurate in detection result judgment. The method improves the detection efficiency and reduces the production cost of an enterprise. Moreover, the method provides a certain theoretical basis for the research on the failure mechanism of related RFID electronic tags.
Description
Technical field
The invention belongs to electronic label technology field, the detection method of the flexible RFID failure mechanism of especially a kind of silver slurry printing.
Background technology
RFID technology, as a kind of emerging automatic identification technology, is just popularized rapidly in all trades and professions.At present the research of RFID smart card is focused primarily upon system and the aspect such as the exploitation of chip, cost reduction.And the analysis that RFID smart card carries out biometry is few, often also simply it is predicted from the read-write number of times of chip, this kind of Forecasting Methodology not only testing result is very inaccurate, and the prognosticator being also required to be correlated with possesses certain ABC and detection experience, this brings great inconvenience to the detection in the life-span of associated electrical label.Appearance due to conductive ink material so that printing RFID electric tag antenna is possibly realized, but the service life of the RFID of electrically conductive ink printing is equally but without carrying out the research be correlated with.When with flip-chip packaged technology by RFID chip package when the Inlay label of antenna that electrically conductive ink prints composition, its failure mechanism carries out studying and inquiring into also without people.Therefore, a kind of new detection method is needed at present badly to detect the failure mechanism of relevant RFID.
By retrieving, not yet find the patent publication us relevant to present patent application.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, for the defect of current RFID failure mechanism detection method, it is provided that a kind of method is simple, easily operated, it is judged that the detection method of the flexible RFID failure mechanism of the quick slurry printing of silver accurately.
To achieve these goals, the technical solution adopted in the present invention is as follows:
The detection method of the flexible RFID failure mechanism of a kind of silver slurry printing, specifically comprises the following steps that
(1) select the RFID that multiple electrically conductive ink prints, surface without breakage, zero defect, can normally read and write data；
(2) select temperature and humidity conditions 4 kinds different: 45 DEG C, 65%RH；45 DEG C, 85%RH；65 DEG C, 65%RH；65 DEG C, 85%RH, often place the RFID of equivalent number in group environment；
(3) RFID is placed in the proof box of constant temperature and humidity, measured read-write situation, DC resistance every 24 hours, record resistance value and whether can normally read and write；The aging conditions of the change of implementing monitoring RFID surface condition and chip junction conducting resinl；
(4) observing the resistance value of each RFID, label, under the environment of different humitures, if DC resistance changes, then illustrates that the electric conductivity of electrically conductive ink also there occurs change；
(5) record RFID that each electric conductivity changes service life under each humiture；
According to the resistance value of record, whether can normally read and write, the change of RFID surface condition, chip junction conducting resinl aging conditions and the testing result in service life, it is judged that the failure mechanism of the flexible RFID of silver slurry printing.
And, the quantity of the described step (1) RFID of middle electrically conductive ink printing is 40.
And, described step (2) in often organize in environment 10 RFID of placement.
And, the judgement of the described step (6) failure mechanism of the middle flexible RFID judging silver slurry printing is specific as follows:
1. the RFID of electrically conductive ink printing is under the environment of humiture, and resistance value changes, and humiture is more high, and resistance change is more big, then judge that electrically conductive ink is had a great impact by humiture；；
2., when measuring label D.C. resistance with circuit tester, circuit tester does not have reading, can not read and write data on reader normally；At this moment observe under scanning electron microscope, it is possible to the crackled phenomenon in printing layer surface occurs, additionally it is possible to be clearly seen that label surface has some water spots；These water spots cause that RFID surface texture becomes lax, this kind of fracture phenomenon finally occur, then judge that humiture causes tag coil generation open circuit, it is impossible to read-write data, cause RFID tag to use and lose efficacy；
3., when measuring the D.C. resistance of label with circuit tester, circuit tester can normally show reading, but can not normally read and write data on reader；Observe under scanning electron microscope and find not find fracture phenomenon, then judge that open circuit does not occur printing layer；When observing chip package place, find that the conducting resinl at chip package place occurs aging, then judge that humiture causes that conducting resinl occurs aging, resinous principle moisture absorption in aging conducting resinl expands, cause that cohesive force is gradually reduced, ultimately result in chip can not normally contact with antenna substrate, cause RFID tag to lose efficacy.
The present invention obtain advantage and have the benefit effect that
The RFID of printing failure mechanism under humiture environment can be detected by the inventive method, the method is relatively more directly perceived, method is simple, easily operated, testing result judges quick accurate, improves the efficiency of detection, reduces the production cost of enterprise；Simultaneously, the method possesses certain ABC and detection experience also without relevant prognosticator, the method brings great convenience to the detection in the life-span of associated electrical label, and the research for the failure mechanism of relevant RFID provides certain theoretical basis.
Accompanying drawing explanation
Fig. 1 is scanning electron microscope (SEM) photograph slight crack occur on the printing layer surface of the inventive method；
There is aging scanning electron microscope (SEM) photograph in the conducting resinl at the chip package place of Fig. 2 the inventive method.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described；Following embodiment is illustrative, is not determinate, it is impossible to limit protection scope of the present invention with following embodiment.
The method used in the present invention, if no special requirements, is the conventional method of this area.
For the defect of current RFID failure Mechanism, the present invention proposes the research method of the failure mechanism of a kind of RFID flexible label starching electrically conductive ink printing for silver.The present invention, from the use environment of environment and humidity, studies the failure mechanism of the Inlay label that RFID chip package is formed by flip-chip packaged technology at the antenna that electrically conductive ink prints.
Embodiment 1
The detection method of the flexible RFID failure mechanism of a kind of silver slurry printing, specifically comprises the following steps that
(1) select the RFID of 40 electrically conductive inks printing, surface without breakage, zero defect, can normally read and write data；
(2) select temperature and humidity conditions 4 kinds different: 45 DEG C, 65%RH；45 DEG C, 85%RH；65 DEG C, 65%RH；65 DEG C, 85%RH, often place 10 RFID in group environment；
(3) RFID is placed in the proof box of constant temperature and humidity, measured read-write situation, DC resistance every 24 hours, record resistance value and whether can normally read and write；The change of implementing monitoring RFID surface condition and chip junction conducting resinl aging conditions；
(4) observing the resistance value of each RFID, label, under the environment of different humitures, if DC resistance changes, then illustrates that the electric conductivity of electrically conductive ink also there occurs change；
(5) record each RFID service life under each humiture；
According to the resistance value of record, whether can normally read and write, the change of RFID surface condition, chip junction conducting resinl aging conditions and the testing result in service life, it is judged that the failure mechanism of the flexible RFID of silver slurry printing, obtain a result；
The judgement of the described step (6) failure mechanism of the middle flexible RFID judging silver slurry printing is specific as follows:
1. the RFID of electrically conductive ink printing is under the environment of humiture, and resistance value changes, and humiture is more high, and resistance change is more big, then judge that electrically conductive ink is had a great impact by humiture；
2., when measuring label D.C. resistance with circuit tester, circuit tester does not have reading, can not read and write data on reader normally；At this moment observe under scanning electron microscope, it is possible to the crackled phenomenon in printing layer surface occurs, additionally it is possible to be clearly seen that label surface has some water spots；These water spots cause that RFID surface texture becomes lax, this kind of fracture phenomenon finally occur, then judge that humiture causes tag coil generation open circuit, it is impossible to read-write data, cause RFID tag to use and lose efficacy；
3., when measuring the D.C. resistance of label with circuit tester, circuit tester can normally show reading, but can not normally read and write data on reader；Observe under scanning electron microscope and find not find fracture phenomenon, then judge that open circuit does not occur printing layer；When observing chip package place, find that the conducting resinl at chip package place occurs aging, then judge that humiture causes that conducting resinl occurs aging, resinous principle moisture absorption in aging conducting resinl expands, cause that cohesive force is gradually reduced, ultimately result in chip can not normally contact with antenna substrate, cause RFID tag to lose efficacy.
Embodiment 2
The detection method of the flexible RFID failure mechanism of a kind of silver slurry printing, specifically comprises the following steps that
(1) select the RFID that multiple electrically conductive ink prints, surface without breakage, zero defect, can normally read and write data；
(2) select temperature and humidity conditions 4 kinds different: 45 DEG C, 65%RH；45 DEG C, 85%RH；65 DEG C, 65%RH；65 DEG C, 85%RH, often place the RFID of equivalent number in group environment；
(3) RFID is placed in the proof box of constant temperature and humidity, measured read-write situation, DC resistance every 24 hours, record resistance value and whether can normally read and write；The change of implementing monitoring RFID surface condition and chip junction conducting resinl aging conditions；
(4) observing the resistance value of each RFID, label, under the environment of different humitures, if DC resistance changes, then illustrates that the electric conductivity of electrically conductive ink also there occurs change；
(5) record RFID that each electric conductivity changes service life under each humiture；
According to the resistance value of record, whether can normally read and write, the change of RFID surface condition, chip junction conducting resinl aging conditions and the testing result in service life, it is judged that the failure mechanism of the flexible RFID of silver slurry printing；
The judgement of the described step (6) failure mechanism of the middle flexible RFID judging silver slurry printing is specific as follows:
1. the RFID of electrically conductive ink printing is under the environment of humiture, if resistance value is on a declining curve, and humiture is more high, and resistance value declines more big, then judge that electrically conductive ink tool is had a great impact by humiture；
2., when measuring label D.C. resistance with circuit tester, circuit tester does not have reading, can not read and write data on reader normally；At this moment observe under scanning electron microscope, it is possible to the crackled phenomenon in printing layer surface occurs, additionally it is possible to be clearly seen that label surface has some water spots；These water spots cause that RFID surface texture becomes lax, this kind of fracture phenomenon finally occur, then judge that humiture causes tag coil generation open circuit, it is impossible to read-write data, cause RFID tag to use and lose efficacy；
3., when measuring the D.C. resistance of label with circuit tester, circuit tester can normally show reading, but can not normally read and write data on reader；Observe under scanning electron microscope and find not find fracture phenomenon, then judge that open circuit does not occur printing layer；When observing chip package place, find that the conducting resinl at chip package place occurs aging, then judge that humiture causes that conducting resinl occurs aging, resinous principle moisture absorption in aging conducting resinl expands, cause that cohesive force is gradually reduced, ultimately result in chip can not normally contact with antenna substrate, cause RFID tag to lose efficacy.
Use the related test results of the detection method of the flexible RFID failure mechanism of silver of the present invention slurry printing and be discussed below:
1, the RFID of electrically conductive ink printing is under the environment of humiture, and resistance value is on a declining curve.And humiture is more high, resistance value declines more big.This illustrates that electrically conductive ink is had a great impact by humiture.
2, when measuring label D.C. resistance with circuit tester, circuit tester does not have reading, can not read and write data on reader normally.At this moment observe under scanning electron microscope, it may appear that there is the phenomenon of slight crack (as shown in Figure 1) on printing layer surface, it is also possible to be clearly seen that label surface has some water spots.These water spots cause that RFID surface texture becomes lax, and final this fracture phenomenon occur, causes tag coil generation open circuit, it is impossible to read-write data, use and lose efficacy.
3, when measuring the D.C. resistance of label with circuit tester, circuit tester can normally show reading, but but can not normally read and write data on reader.Observing under scanning electron microscope and find not find fracture phenomenon, this illustrates that open circuit does not occur printing layer.When observing chip package place, it has been found that aging (as shown in Figure 2) occurs the conducting resinl at chip package place.Resinous principle moisture absorption in aging conducting resinl expands, and causes that cohesive force is gradually reduced, and ultimately results in chip and can not normally contact with antenna substrate, will also result in RFID equally and lost efficacy.
4, the phenomenon that above-mentioned 2,3 two kind of situation is set forth is likely to cause the inefficacy of RFID, but finds in test, 45 DEG C, under the environment of 65%RH, and 10 labels are all the inefficacies caused by the antenna generation open circuit of printing.45 DEG C, under the environment of 85%RH, 8 labels are the inefficacies caused by the antenna generation open circuit of printing, and other 2 labels are owing to aging caused inefficacy occurs the conducting resinl of encapsulation.65 DEG C, 65%RH and 65 DEG C, 85%RH environment under, be all 9 labels be the inefficacy caused by the antenna generation open circuit of printing, 1 label is owing to aging caused inefficacy occurs the conducting resinl of encapsulation.It is to say, under identical temperature and humidity, the inefficacy 80% of label is all owing to printing layer occurs in that open circuit causes.
Claims (4)
1. the detection method of the flexible RFID failure mechanism of a silver slurry printing, it is characterised in that: specifically comprise the following steps that
(1) select the RFID that multiple electrically conductive ink prints, surface without breakage, zero defect, can normally read and write data；
(2) select temperature and humidity conditions 4 kinds different: 45 DEG C, 65%RH；45 DEG C, 85%RH；65 DEG C, 65%RH；65 DEG C, 85%RH, often place the RFID of equivalent number in group environment；
(3) RFID is placed in the proof box of constant temperature and humidity, measured read-write situation, DC resistance every 24 hours, record resistance value and whether can normally read and write；The aging conditions of the change of implementing monitoring RFID surface condition and chip junction conducting resinl；
(4) observing the resistance value of each RFID, label, under the environment of different humitures, if DC resistance changes, then illustrates that the electric conductivity of electrically conductive ink also there occurs change；
(5) record RFID that each electric conductivity changes service life under each humiture；
According to the resistance value of record, whether can normally read and write, the change of RFID surface condition, chip junction conducting resinl aging conditions and the testing result in service life, it is judged that the failure mechanism of the flexible RFID of silver slurry printing.
2. the detection method of the flexible RFID failure mechanism of silver slurry printing according to claim 1, it is characterised in that: the quantity of the described step (1) RFID of middle electrically conductive ink printing is 40.
3. the detection method of flexible RFID failure mechanism of silver slurry printing according to claim 1, it is characterised in that: described step (2) in often organize 10 RFID of placement in environment.
4. the detection method of the flexible RFID failure mechanism of the silver slurry printing according to any one of claims 1 to 3, it is characterised in that: the judgement of the described step (6) failure mechanism of the middle flexible RFID judging silver slurry printing is specific as follows:
1. the RFID of electrically conductive ink printing is under the environment of humiture, and resistance value changes, and humiture is more high, and resistance change is more big, then judge that electrically conductive ink is had a great impact by humiture；
2., when measuring label D.C. resistance with circuit tester, circuit tester does not have reading, can not read and write data on reader normally；At this moment observe under scanning electron microscope, it is possible to the crackled phenomenon in printing layer surface occurs, additionally it is possible to be clearly seen that label surface has some water spots；These water spots cause that RFID surface texture becomes lax, this kind of fracture phenomenon finally occur, then judge that humiture causes tag coil generation open circuit, it is impossible to read-write data, cause RFID tag to use and lose efficacy；
3., when measuring the D.C. resistance of label with circuit tester, circuit tester can normally show reading, but can not normally read and write data on reader；Observe under scanning electron microscope and find not find fracture phenomenon, then judge that open circuit does not occur printing layer；When observing chip package place, find that the conducting resinl at chip package place occurs aging, then judge that humiture causes that conducting resinl occurs aging, resinous principle moisture absorption in aging conducting resinl expands, cause that cohesive force is gradually reduced, ultimately result in chip can not normally contact with antenna substrate, cause RFID tag to lose efficacy.
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| CN201410791193.7A CN105759136A (en) | 2014-12-18 | 2014-12-18 | Detection method for failure mechanism of flexible RFID electronic tag during silver paste printing process |
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Cited By (3)
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| CN106814108A (en) * | 2017-01-13 | 2017-06-09 | 永道无线射频标签(扬州)有限公司 | It is a kind of to detect detecting system and its application method that whether conducting resinl has fine fisssure to hinder |
| CN110044412A (en) * | 2019-04-10 | 2019-07-23 | 江苏麦瑞特科技有限公司 | A kind of folding tag technique computer automatic checkout system |
| CN117677061A (en) * | 2024-01-29 | 2024-03-08 | 深圳特新界面科技有限公司 | Preparation method and system of environment-friendly aqueous conductive paste printed electronic tag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814108A (en) * | 2017-01-13 | 2017-06-09 | 永道无线射频标签(扬州)有限公司 | It is a kind of to detect detecting system and its application method that whether conducting resinl has fine fisssure to hinder |
| CN106814108B (en) * | 2017-01-13 | 2019-07-16 | 永道无线射频标签(扬州)有限公司 | A kind of detection system and its application method whether detection conducting resinl has fine fisssure to hurt |
| CN110044412A (en) * | 2019-04-10 | 2019-07-23 | 江苏麦瑞特科技有限公司 | A kind of folding tag technique computer automatic checkout system |
| CN117677061A (en) * | 2024-01-29 | 2024-03-08 | 深圳特新界面科技有限公司 | Preparation method and system of environment-friendly aqueous conductive paste printed electronic tag |
| CN117677061B (en) * | 2024-01-29 | 2024-04-09 | 深圳特新界面科技有限公司 | Preparation method and system of environment-friendly aqueous conductive paste printed electronic tag |
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Application publication date: 20160713 |