CN106885995A - Test device and detection method - Google Patents
Test device and detection method Download PDFInfo
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- CN106885995A CN106885995A CN201710022100.8A CN201710022100A CN106885995A CN 106885995 A CN106885995 A CN 106885995A CN 201710022100 A CN201710022100 A CN 201710022100A CN 106885995 A CN106885995 A CN 106885995A
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
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Abstract
The invention discloses a kind of test device and detection method, test device is used to provide test signal for module to be measured, and module to be measured has the first input port and the second input port with the second polarity of the first polarity, and test device includes：Drive module, produces the first test signal with the first polarity and the second test signal with the second polarity；Control module, for producing control signal according to the first test signal；And relay, for the test signal with the first input port of backlight module and the matched polarity of the second input port to be provided for backlight module according to control signal.Test device disclosed by the invention and detection method, the Auto-matching of test device and module polarity to be measured can be realized, no matter whether the two connection end polarity matches, test operation can be normally completed, avoiding cannot normally use because operating personnel's connection error causes test device in the prior art, and the problem that the operating efficiency thus brought is reduced.
Description
Technical field
The present invention relates to electronic circuit field, more particularly to a kind of test device and detection method.
Background technology
At present, it is necessary to be examined to the backlight module in liquid crystal display device in the production process of liquid crystal display device
Test, mainly LED (light emitting diode) the electric light energization situation on backlight module is tested, i.e., to detect lighting rate.
Existing detection method is two using the golden finger in two electrodes and backlight module by hand by backlight lighting device
Electrode is connected.But because two electrode tips of backlight lighting device typically manually add polarity mark, but due to operator
The problem of mark or polarity mark mistake is forgotten in the carelessness of member often, although and two electrode tips of golden finger equally add
Added with electrode designations, but due to two electrodes of two electrodes of backlight lighting device and golden finger being attached after, to prevent
Junction is broken, it will usually be intertwined and connected place using adhesive tape, and the adhesive tape for being used often covers the electrode designations on golden finger,
Operating personnel are have impact on to confirm electrode connection status.
If two polarity of electrode reversal connections of two electrodes of backlight lighting device and golden finger, backlight module cannot be normal
It is lit, to tester with very big inconvenience, have impact on the operating efficiency of tester.
The content of the invention
In view of this, it is an object of the invention to provide a kind of test device and detection method, it can realize backlight
The intermediate polarity Auto-matching of ignition device and backlight module.
According to the first aspect of the invention, there is provided a kind of test device, for providing test signal for module to be measured, institute
First input port of the module to be measured with the first polarity and the second input port with the second polarity are stated, including：Drive mould
Block, produces the first test signal with the first polarity and the second test signal with the second polarity；Control module, for root
Control signal is produced according to first test signal；And relay, for being the backlight module according to the control signal
Test signal with the first input port of the backlight module and the matched polarity of the second input port is provided.
Preferably, the drive module has power end, earth terminal, the first output end and the second output end, the drive
The power end of dynamic model block receives first voltage, the earth terminal ground connection of the drive module, the first output end of the drive module
It is respectively used to export the first test signal and the second test signal with the second output end；
The relay have control signal, first input end, the second input, the 3rd input, the 4th input,
First output end and the second output end, the control signal of the relay are used to receiving control signal, and the of the relay
One input and the 4th input are connected with the first output end of drive module, the second input of the relay and the 3rd defeated
Enter end to be connected with the second output end of drive module, the first output end of the relay is used in the control signal be first
The first test signal is exported during level, the second test signal, the relay are exported when the control signal is second electrical level
The second output end be used to export the second test signal when the control signal is the first level, be the in the control signal
The first test signal is exported during two level.
Preferably, the control module includes：Comparison module, for by the first test signal and first voltage comparison operation
Module, carries out logical operation to generate control signal based on second voltage to the comparative result of comparison module.
Preferably, the comparison module includes：First resistor, the first end of the first resistor is used to receive the first test
Signal；Second resistance, the first end ground connection of the second resistance, the of the second end of the second resistance and the first resistor
Two ends are connected；Comparator, the in-phase input end of the comparator is connected with the second end of the second resistance, the comparator
In-phase input end receives first voltage.
Preferably, the computing module includes：With door, the output end of the first input end with door and the comparator
It is connected, it is described to be connected with the output end of door with described with the second input of door；3rd resistor, the first end of the 3rd resistor
Second voltage is received, the second end of the 3rd resistor is connected with described with the second input of door；And not gate, the not gate
It is connected with the output end of door with described, the output end of the not gate is used for output control signal.
Preferably, first polarity is positive polarity, and the second polarity is negative polarity.
Preferably, the second voltage is 3.3V.
Preferably, the module to be measured includes the backlight module of liquid crystal display device, first test signal and second
Test signal is the point modulating signal of backlight module.
According to the second aspect of the invention, there is provided a kind of detection method, including：Produce the first test with the first polarity
Signal and the second test signal with the second polarity；Control signal is produced according to first test signal；And using after
Electrical equipment is input into for the backlight module is provided according to the control signal with the first input port of the backlight module and second
The test signal of the matched polarity of port.
Preferably, the first test signal generation control signal includes：First test signal is compared with first voltage；
The comparative result of comparison module is carried out logical operation to generate control signal based on second voltage.
Test device and detection method according to embodiments of the present invention, it is possible to achieve test device and module polarity to be measured
Auto-matching,, when being connected with module to be measured, no matter whether the two connection end polarity matches, and can normally complete test behaviour for it
Make, it is to avoid in the prior art cannot normally be used because operating personnel's connection error causes test device, and thus bring
Operating efficiency reduction problem.
Brief description of the drawings
By description referring to the drawings to inventive embodiments, of the invention above-mentioned and other purposes, feature and excellent
Point will be apparent from, in the accompanying drawings：
Fig. 1 shows the structure chart of the test device that first embodiment of the invention is provided；
Fig. 2 shows the equivalent circuit diagram of control module in the test device that first embodiment of the invention is provided；
Fig. 3 shows the display situation of oscillograph in Fig. 2.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
It is detailed to describe some specific detail sections during text is to the detailed description of the embodiment of the present invention, those skilled in the art are come
Saying the description of part without these details can also completely understand the present invention.It is known in order to avoid obscuring essence of the invention
Method, process, flow are not described in detail.
In various figures, identical element is represented using similar reference.For the sake of clarity, in accompanying drawing
Various pieces are not necessarily to scale.Additionally, may not shown some known parts in figure.Flow chart, frame in accompanying drawing
Figure illustrates system, method, the possible System Framework of circuit, function and the operation of embodiments of the invention, the square frame of accompanying drawing
And square frame order is used only to preferably illustrate the process and step of embodiment, without should be in this, as the limit to invention itself
System.
Fig. 1 shows the structure chart of the test device that first embodiment of the invention is provided.As shown in figure 1, the present invention first
The test device that embodiment is provided includes control module 100, drive module 200 and relay 300, the drive module 200
For producing the first test signal A with the first polarity and the second test signal K with the second polarity；The control module
100 are used to produce control signal CONTROL according to first test signal；The relay 300 is used for according to the control
Signal CONTROL provides the first input port BL_A and the second input port with the module to be measured for the module to be measured
The test signal of the matched polarity of BL_K, the relay 300 is, for example, two channel relay, the first of the module to be measured
The second input port B L_K that input port B L_A has the first polarity, the module to be measured has the second polarity, described to be measured
Module includes the backlight module of liquid crystal display device, and the first test signal A and the second test signal K are, for example, backlight module
Point modulating signal, first polarity is, for example, positive pole, and second polarity is, for example, negative pole.
Fig. 1 (a) shows the structure chart of control module in the test device that first embodiment of the invention is provided.Such as Fig. 1 a institutes
Show, the control module 100 include comparison module 110 and computing module 120, the comparison module 110 include first resistor R1,
Second resistance R2 and comparator U1, the computing module 120 includes 3rd resistor R3 and door U2 and not gate U3.
The first end of the first resistor R1 is used to receive the first test signal A；First termination of the second resistance R2
Ground, second end of the second resistance R2 is connected with second end of the first resistor R1；The homophase input of the comparator U1
End be connected with second end of the second resistance R2, the in-phase input end of comparator U1 reception first voltage VCC1, described
The power end of comparator U1 receives the earth terminal ground connection of second voltage VCC2, the comparator U1；It is described defeated with the first of door U2
Enter end to be connected with the output end of the comparator U1；The first end of the 3rd resistor R3 receives second voltage VCC2, and described the
Second end of three resistance R3 is connected to second input and output end with door U2 simultaneously；The not gate U3 and described and door
The output end of U2 is connected, and the output end of the not gate U3 is used for output control signal CONTROL.
That the first voltage VCC1 is, for example, 2.5V；The second voltage VCC2 is, for example, 3.3V；The first resistor
R1 is, for example, the R0603 type resistance of resistance 50K Ω, error 5%；The second resistance R2 is, for example, resistance 10K Ω, error 5%
R0603 type resistance；The 3rd resistor R3 is, for example, the R0603 type resistance of resistance 10K Ω, error 5%.
Fig. 1 (b) shows the structure chart of drive module in the test device that first embodiment of the invention is provided.Such as Fig. 1 (b) institutes
Show, the drive module 200 has power end A0, earth terminal A1, the first output terminals A 2 and the second output terminals A 3.The driving
The power end A0 of module receives supply voltage VIN, and the supply voltage VIN is, for example, 12V, the earth terminal A1 ground connection.It is described
First output terminals A 2 and the second output terminals A 3 are respectively used to export the first test signal A and the second test signal K.
Fig. 1 (c) shows the structure chart of the test device repeat circuit that first embodiment of the invention is provided.Such as Fig. 1 (c) institutes
Show, the relay has control signal A5, first input end K11, the second input K12, the 3rd input K21, the 4th
Input K22, the first output end C1, the second output end C2 and power end A4.
Wherein, the first input end K11 of the relay 300 is used to receive the first test signal A, the relay 300
The second input K12 be used for receive the second test signal K, the first output end C1 and first input end of the relay 300
The first normally-closed contact is constituted between K11, is constituted between the first output end C1 and the second input K12 of the relay 300
One normally opened contact, the 3rd input K21 of the relay 300 is used to receive the second test signal K, the relay 300
4th input K22 is used to receiving the first test signal A, the second output end C2 of the relay 300 and the 3rd input it
Between K21 constitute the second normally-closed contact, constitute second between the second output end C2 of the relay 300 and the 4th input K22
Normally opened contact, the power end A4 is used to receive second voltage VCC2, the control signal A5 for receiving the control mould
The control signal CONTROL that block is provided.The first output end C1 and the second output end C2 of the relay 300 are used to be treated with described
Module connection is surveyed, for providing test signal for the module to be measured.With described previously, the second voltage VCC2 is, for example,
3.3V。
The relay 300 also include coil (not shown), when the coil not it is electric when, the relay 300
The first normally-closed contact closure, first normally opened contact disconnects, the first output end C1 and the first input end K11 phases
Connection；The second normally-closed contact closure, second normally opened contact disconnects, and the second output end C2 and the described 3rd is input into
End K21 is connected.
For the ease of preferably implementing the present invention, second embodiment of the invention provides a kind of detection method.Wherein noun
Implication is identical with above-mentioned test device, implements the explanation during details refers to test device embodiment.
When starting detection, if the first output end C1 of the relay 300 is connected to the first input port of module to be measured
BL_A, and the second output end C2 of the relay 300 is connected to the second output port of module to be measured, due to connection end polarity
Match, the drive module 100 by supply voltage VIN it is boosted after through being exported by first output terminals A 2, had
First test signal A of the first level, the level value of the first test signal A is, for example, 21V~24V.
The comparator U1 homophase inputs terminal voltage is higher than the comparator U1 anti-phase input terminal voltages, the comparator U1
It is output as high level.Now, the first input end with door U2 is due to being connected to the output end of the comparator U1, it is described with
The first input end of door U2 is high level.Those skilled in the art it should be clear that it is described with door U2 under current annexation,
When the first input end with door U2 is high level, the output end with door U2 is also high level.Accordingly, it is described non-
The input of door U3 is high level, and the output end of the not gate U3 exports low level control signal CONTROL.
Due to the coil in the relay 300 not it is electric when, the relay 300 the first normally-closed contact closure, institute
The disconnection of the first normally opened contact is stated, the first output end C1 is connected with the first input end K11；Second normally-closed contact
Closure, second normally opened contact disconnects, and the second output end C2 is connected with the 3rd input K21.
Now, the relay 300 receives the low level control signal CONTROL so that the relay 300
One normally-closed contact, the first normally opened contact, the second normally-closed contact and the second normally opened contact continue keep work as the coil of relay 300
State when must not be electric, the first output end C1 is connected with the first input end K11, receives and export with positive polarity
The first test signal A, the second output end C2 is connected with the 3rd input K21, receives and export with negative pole
Second test signal K of property, the test device is correctly matched with the module to be measured, can be normally carried out test operation.
If the first output end C1 of the relay 300 is connected to the second input port B L_K of module to be measured, and described
Second output end C2 of relay 300 is connected to the first output port of module to be measured, because connection end polarity is not matched that, institute
Drive module 100 is stated without boosting, the supply voltage VIN is directly exported through first output terminals A 2, obtain first
Test signal A, the level value of the first test signal A is mutually all 12V with the level value of supply voltage VIN.
The comparator U1 homophase inputs terminal voltage is less than the comparator U1 anti-phase input terminal voltages, the comparator U1
It is output as low level.It is described with door U2 first input ends due to being connected to the output end of the comparator U1, the comparator U1
First input end be low level, it is described it is same with door U2 first input ends also be low level, can by the logical relation with door U2
Know, the output end with door U2 is also necessarily low level.Due to described described and door is connected to door U2 the second input
The output end of U2, it is described to be pulled to low level with door U2 the second input terminal voltage.Accordingly, the input of the not gate U3 is
Low level, the output end of the not gate U3 exports the control signal CONTROL of high level.
Due to the coil in the relay 300 not it is electric when, the relay 300 the first normally-closed contact closure, institute
The disconnection of the first normally opened contact is stated, the first output end C1 is connected with the first input end K11；Second normally-closed contact
Closure, second normally opened contact disconnects, and the second output end C2 is connected with the 3rd input K21.
Now, the relay 300 receives the control signal CONTROL of the high level, makes first normally-closed contact
Disconnect, first normally opened contact closure, the relay 300 is with negative polarity the via the first output end C1 outputs
Two test signal K；Second normally-closed contact disconnects, the second normally opened contact closure, and the relay is via described second
Output end C2 first test signal As of the output with positive polarity, the test device is correctly matched with the module to be measured, can be just
Often complete lighting operation.
Fig. 2 shows the equivalent circuit diagram of control module in the test device that first embodiment of the invention is provided.Such as Fig. 2 institutes
Show, the output end Q of the waveform generator U4 in equivalent circuit diagram corresponds to the output end of comparator U1 in control module in Fig. 1,
The waveform generator U4 such as output frequency 5Hz, the square wave of dutycycle 50%.The output of the waveform generator U4 and Fig. 1
Middle comparator U1 is output as equivalent during high level.
Fig. 3 shows the display situation of oscillograph in Fig. 2.As shown in figure 3, showing not gate U3 in Fig. 2 in oscillogram
Output waveform, it can be seen that comparator U1 is output as high level in working as Fig. 2, the output of the not gate U3 persistently keeps
It is high level, the thus Theoretical Proof process above with experimental verification.
Relative to test device and detection method that prior art, the present invention are provided, because the test device can be real
The Auto-matching of existing polarity,, when being connected with module to be measured, no matter whether the two connection end polarity matches, and is carried by the present invention for it
The detection method of confession can normally complete test operation, it is to avoid in the prior art because operating personnel connection error causes to survey
Trial assembly is put cannot normally be used, and the problem that the operating efficiency thus brought is reduced.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet
It is only described specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation
Book is chosen and specifically describes these embodiments, is in order to preferably explain principle of the invention and practical application, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.
Claims (10)
1. a kind of test device, for providing test signal for module to be measured, the module to be measured has the first of the first polarity
Input port and the second input port with the second polarity, it is characterised in that including：
Drive module, produces the first test signal with the first polarity and the second test signal with the second polarity；
Control module, for producing control signal according to first test signal；And
Relay, for according to the control signal for the backlight module provides the first input port with the backlight module
With the test signal of the matched polarity of the second input port.
2. test device according to claim 1, it is characterised in that
The drive module has power end, earth terminal, the first output end and the second output end, the power supply of the drive module
End receives first voltage, the earth terminal ground connection of the drive module, first output end and the second output end of the drive module
It is respectively used to export the first test signal and the second test signal；
The relay has control signal, first input end, the second input, the 3rd input, the 4th input, first
Output end and the second output end, the control signal of the relay are used to receive control signal, and the first of the relay is defeated
Enter end and the 4th input is connected with the first output end of drive module, second input and the 3rd input of the relay
It is connected with the second output end of drive module, the first output end of the relay is used in the control signal be the first level
When export the first test signal, export the second test signal when the control signal is second electrical level, the of the relay
Two output ends are used to export the second test signal when the control signal is the first level, are the second electricity in the control signal
Usually export the first test signal.
3. test device according to claim 1, it is characterised in that the control module includes：
Comparison module, for the first test signal to be compared with first voltage；
Computing module, carries out logical operation to generate control signal based on second voltage to the comparative result of comparison module.
4. test device according to claim 3, it is characterised in that the comparison module includes：
First resistor, the first end of the first resistor is used to receive the first test signal；
Second resistance, the first end ground connection of the second resistance, the of the second end of the second resistance and the first resistor
Two ends are connected；
Comparator, the in-phase input end of the comparator is connected with the second end of the second resistance, the same phase of the comparator
Input receives first voltage.
5. test device according to claim 4, it is characterised in that the computing module includes：
With door, it is described to be connected with the output end of the comparator with the first input end of door, second input with door with
It is described to be connected with the output end of door；
3rd resistor, the first end of the 3rd resistor receives second voltage, the second end and the described and door of the 3rd resistor
The second input be connected；And
Not gate, the not gate is connected with described with the output end of door, and the output end of the not gate is used for output control signal.
6. test device according to claim 1, it is characterised in that first polarity is positive polarity, the second polarity is
Negative polarity.
7. test device according to claim 6, it is characterised in that the second voltage is 3.3V.
8. test device according to claim 1, it is characterised in that the module to be measured includes the back of the body of liquid crystal display device
Optical module, first test signal and the second test signal are the point modulating signal of backlight module.
9. a kind of detection method, it is characterised in that including：
Produce the first test signal with the first polarity and the second test signal with the second polarity；
Control signal is produced according to first test signal；And
Using relay according to the control signal for the backlight module provides the first input port with the backlight module
With the test signal of the matched polarity of the second input port.
10. detection method according to claim 9, it is characterised in that first test signal produces control signal bag
Include：
First test signal is compared with first voltage；
The comparative result of comparison module is carried out logical operation to generate control signal based on second voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022100.8A CN106885995B (en) | 2017-01-12 | 2017-01-12 | Test device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022100.8A CN106885995B (en) | 2017-01-12 | 2017-01-12 | Test device and detection method |
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| CN106885995A true CN106885995A (en) | 2017-06-23 |
| CN106885995B CN106885995B (en) | 2019-11-19 |
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ID=59175797
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| CN201710022100.8A Active CN106885995B (en) | 2017-01-12 | 2017-01-12 | Test device and detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732489A (en) * | 2018-08-31 | 2018-11-02 | 长鑫存储技术有限公司 | Test method, test equipment, test carrier plate and test system |
| CN109655682A (en) * | 2018-11-07 | 2019-04-19 | 广东核电合营有限公司 | A kind of automatic testing circuit and device on the spot |
| US11988710B2 (en) | 2018-08-31 | 2024-05-21 | Changxin Memory Technologies, Inc. | Test methods, tester, load board and test system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000058278A (en) * | 1998-08-04 | 2000-02-25 | Canon Inc | Backlight device |
| US20070216232A1 (en) * | 2006-03-14 | 2007-09-20 | Li Feng | Multi-functional safety power supply switch of touch screen type |
| CN103943087A (en) * | 2014-04-04 | 2014-07-23 | 京东方科技集团股份有限公司 | Drive circuit of displayer and display device |
| CN104053281A (en) * | 2014-06-16 | 2014-09-17 | 京东方光科技有限公司 | Lighting jig |
| CN105096859A (en) * | 2015-07-29 | 2015-11-25 | 深圳市华星光电技术有限公司 | Driving method and apparatus of LCD |
| CN205015449U (en) * | 2015-09-30 | 2016-02-03 | 深圳Tcl数字技术有限公司 | Be shaded and adjust test system |
-
2017
- 2017-01-12 CN CN201710022100.8A patent/CN106885995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000058278A (en) * | 1998-08-04 | 2000-02-25 | Canon Inc | Backlight device |
| US20070216232A1 (en) * | 2006-03-14 | 2007-09-20 | Li Feng | Multi-functional safety power supply switch of touch screen type |
| CN103943087A (en) * | 2014-04-04 | 2014-07-23 | 京东方科技集团股份有限公司 | Drive circuit of displayer and display device |
| CN104053281A (en) * | 2014-06-16 | 2014-09-17 | 京东方光科技有限公司 | Lighting jig |
| CN105096859A (en) * | 2015-07-29 | 2015-11-25 | 深圳市华星光电技术有限公司 | Driving method and apparatus of LCD |
| CN205015449U (en) * | 2015-09-30 | 2016-02-03 | 深圳Tcl数字技术有限公司 | Be shaded and adjust test system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732489A (en) * | 2018-08-31 | 2018-11-02 | 长鑫存储技术有限公司 | Test method, test equipment, test carrier plate and test system |
| CN108732489B (en) * | 2018-08-31 | 2023-09-05 | 长鑫存储技术有限公司 | Test method, test equipment, test carrier plate and test system |
| US11988710B2 (en) | 2018-08-31 | 2024-05-21 | Changxin Memory Technologies, Inc. | Test methods, tester, load board and test system |
| CN109655682A (en) * | 2018-11-07 | 2019-04-19 | 广东核电合营有限公司 | A kind of automatic testing circuit and device on the spot |
| CN109655682B (en) * | 2018-11-07 | 2021-09-24 | 广东核电合营有限公司 | On-site automatic test circuit and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106885995B (en) | 2019-11-19 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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