CN105988059A - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN105988059A CN105988059A CN201510136599.6A CN201510136599A CN105988059A CN 105988059 A CN105988059 A CN 105988059A CN 201510136599 A CN201510136599 A CN 201510136599A CN 105988059 A CN105988059 A CN 105988059A
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Abstract
The invention discloses a detection device and a detection method and belongs to the circuit detection technical field. The detection device includes an electro-optical conversion screen which is arranged at one side of a circuit board to be detected and is used for displaying a detection pattern, and a power source board which is arranged at the other side of the circuit board to be detected and is used for providing voltage for the electro-optical conversion screen and the circuit board. According to the detection method, a voltage is applied between the electric conduction layer of the electro-optical conversion screen and the power source board; and the electro-optical conversion screen displays the detection pattern of the circuit board. Based on the detection pattern, the abnormal situations of lines in through holes and surface circuits in the circuit board can be judged accurately and intuitively.
Description
Technical field
The present invention relates to a kind of detection technique field, especially relate to a kind of detection device and detection method.
Background technology
At present, electronic product pursues miniaturization, product mass, the production automation, and SMT (Surface Mounted Technology, surface mounting technology) is increasingly becoming most popular a kind of packaged type in Electronic Assemblies industry.As the vitals in SMT technique, carry the difficult point in the detection always substrate manufacture field of the electric property of the substrate of chip component.Main reason is that: the invisibility of through hole circuit and high density, it is difficult to quickly and intuitively detect that conduction property is the best；CircuitFigureShape spacing is little is difficult to differentiate whether short circuit,FigureShape density high detection efficiency is low.
In prior art, traditional microscopic examination and ohmmeter detection all cannot meet production line balance.For the detection of circuit substrate electric property, commonly use in the industry flying probe tester.Flying probe tester does not relies on the pin being arranged on fixture or supportFigureCase.Based on this system, two or more probes are installed on the small magnetic head that can move freely on the x-y plane, and test point is directly controlled by CADI Gerber data.Double probes can move in the range of 4mil apart.Probe canIndependentGround is mobile, and does not has real they degree close to each other of restriction.It is to be measured as basis with electric capacity with the tester of two arms that can move back and forth.Circuit board be pressed against on the insulating barrier being placed on one piece of metallic plate, as another metallic plate of capacitor.If there being a short circuit between circuit, electric capacity is by bigger than on a point determined.If there being an open circuit, electric capacity will diminish.Flying probe tester is only capable of testing two or four test point.For the circuit substrate that number of vias is huge, the flying probe test technology of movement is slow, causes testing industry beat low.
Summary of the invention
In view of this, the present invention is directed to available circuit plate detection technique and exist above-mentioned or other is not enough, the present invention provides a kind of detection device and detection method, its utilize electro-optic conversion screen electrooptic effect can testing circuit plate the most intuitively, have that detection method is simple, accuracy of detection is high, the advantage of low cost.
In order to reach above-mentioned or other purpose, one aspect of the present invention proposes a kind of detection device, and for testing circuit plate, described circuit board has both sides, and described both sides are disposed with circuitFigureCase, including: electro-optic conversion screen, it is placed in the side of described circuit board, is used for showing detectionFigureCase；Power panel, is placed in the opposite side of described circuit board, for providing voltage for described electro-optic conversion screen and circuit board.
As an improvement of detection device, described electro-optic conversion screen also includes upper substrate, infrabasal plate and is located in the electro-optic conversion medium between described upper and lower substrate, and described upper substrate is provided with conductive layer near described electro-optic conversion media side.
As an improvement of detection device, described electro-optic conversion medium, under different voltage status or different current status, can show the combination of different brightness or different colors or different brightness and different colours.
As an improvement of detection device, described electro-optic conversion medium includes that charged black particles and white charged particles are distributed in coloring solution or clear solution.
As an improvement of detection device, described power panel also includes base plate and is arranged at the power electrode on described base plate.
In order to reach above-mentioned or other purpose, another aspect of the present invention proposes a kind of detection device, and for testing circuit plate, described circuit board has both sides, and described both sides are disposed with circuitFigureCase, including: Electronic Paper, it is placed in a side surface of described circuit board, is used for showing detectionFigureCase；Power panel, is placed in the opposite side surface of described circuit board, has base plate and is arranged at the power electrode on described base plate, for providing voltage for described electro-optic conversion screen.
As an improvement of detection device, described circuit board has both sides, is disposed with multiple near Electronic Paper sideUpper tableFace line unit, is disposed with multiple near power panel sideFollowing tableFace line unit, describedUpper tableFace line unit and describedFollowing tableElectrical connection is realized by through hole between the line unit of face.
As an improvement of detection device, the plurality ofUpper tableFace line unit is array distribution, each describedUpper tableFace line unit includes: the first line of odd-numbered lineFigureCase and the second circuit of even number lineFigureCase, and described first lineFigureCase and described second circuitFigureBetween case, insulation separates.
As an improvement of detection device, the plurality ofFollowing tableFace line unit is array distribution, each describedFollowing tableFace line unit includes: the 4th circuit of odd-numbered lineFigureCase and the 5th circuit of even number lineFigureCase, and described 4th circuitFigureCase and described 5th circuitFigureCase is separated by metal derby.
As an improvement of detection device, described first lineFigureCase and described 4th circuitFigureCase is electrically connected by through hole；Described second circuitFigureCase passes through the 5th circuitFigureCase is electrically connected by through hole.
As an improvement of detection device, described power electrode is divided into two groups, one group and described 4th circuitFigureCase is corresponding, another group and described 5th circuitFigureCase is corresponding.
As an improvement of detection device, described power electrode and described 4th circuitFigureCase or described 5th circuitFigureOne of case correspondence.
In order to reach above-mentioned or other purpose, another aspect of the invention provides a kind of detection method, including: being arranged between electro-optic conversion screen and power panel by circuit board to be detected, described electro-optic conversion screen is placed in the side of described circuit board, and described power panel is placed in the opposite side of described circuit board；Described power panel applies detection voltage and is supplied to described electro-optic conversion screen by described circuit board；Described electro-optic conversion screen shows the testing circuit of described circuit boardFigureCase.
As an improvement of detection method, described electro-optic conversion screen also includes upper substrate, infrabasal plate and is located in the electro-optic conversion medium between described upper and lower substrate, and described upper substrate is provided with conductive layer near described electro-optic conversion media side；Described power panel has base plate and is arranged at the power electrode on described base plate；The described side of described circuit board is disposed with multipleUpper tableFace line unit, described opposite side is disposed with multipleFollowing tableFace line unit, and describedUpper tableFace circuit passes through through hole with describedFollowing tableFace circuit electrical connection.
As an improvement of detection method, described detection voltage passes sequentially through describedFollowing tableUpper thread road and described through hole apply to describedUpper tableUpper thread road, and apply a voltage in described conductive layer, make the described electro-optic conversion medium of described electro-optic conversion screen transparency conducting layer withUpper tableVoltage difference is produced between upper thread road.
As an improvement of detection method, the plurality of upper,Following tableFace line unit is respectively in array distribution, describedUpper tableFace line unit includes the first line of odd-numbered lineFigureCase and the second circuit of even number lineFigureCase；DescribedFollowing tableFace line unit includes the 4th circuit of odd-numbered lineFigureCase and the 5th circuit of even number lineFigureCase；Wherein, described first lineFigureCase and described 4th circuitFigureCase is electrically connected by through hole；Described second circuitFigureCase passes through the 5th circuitFigureCase is electrically connected by through hole.
As an improvement of detection method, power panel is divided into odd-numbered line and even number line power electrode, described odd-numbered line power electrode is connected the first voltage V1, described first voltage V1 and passes sequentially through the described 4thFigureCase and described through hole are transmitted to first line described in odd-numbered lineFigureCase；Described even number line power electrode is connected the second voltage V2, described second voltage V2 by the 5thFigureCase and described through hole are transmitted to described second circuitFigureCase；The conductive layer of electro-optic conversion screen is connected tertiary voltage V3.
As an improvement of detection method, voltage is set: the first voltage V1 < tertiary voltage V3 < second voltage V2, in described conductive layer and described first lineFigureBetween case, formed with described conductive layer as positive polarity and with described first lineFigureCase is the longitudinal electric field of negative polarity；At described conductive layer and described second circuitFigureBetween case, formed with described second circuitFigureCase is positive polarity the longitudinal electric field with described conductive layer as negative polarity.
As an improvement of detection method, voltage is set: the first voltage V1 > tertiary voltage V3 > second voltage V2, in described conductive layer and described first lineFigureBetween case, formed with described conductive layer as negative polarity and with described first lineFigureCase is the longitudinal electric field of positive polarity；At described conductive layer and described second circuitFigureBetween case, formed with described second circuitFigureCase is negative polarity the longitudinal electric field with described conductive layer as positive polarity.
As an improvement of detection method, also include the described testing circuit according to described electro-optic conversion screenFigureCase, with normal testing circuitFigureCase contrasts, it is judged that the electrology characteristic of described circuit board under test circuit.
In order to reach above-mentioned or other purpose, further aspect of the present invention provides a kind of detection method, and for testing circuit plate, described circuit board has both sides, and side is disposed with multiple odd-numbered line first line in array distributionFigureCase and the second circuit of even number lineFigureCase, opposite side is disposed with multiple odd-numbered line the 4th circuit in array distributionFigureCase and the 5th circuit of even number lineFigureCase, described first, fourth circuitFigureCase and described second, five circuitsFigureElectrical connection is realized by through hole respectively between case, including:
Electro-optic conversion screen is placed in the side of circuit board, and described electro-optic conversion screen includes upper substrate, infrabasal plate and is located in the electro-optic conversion medium between described upper and lower substrate, and described upper substrate is provided with conductive layer near described electro-optic conversion media side；
Power panel is placed in the opposite side of described circuit board, and described power panel has multiple power electrode, the plurality of power electrode respectively with the plurality of first lineFigureCase or multiple 4th circuitFigureCase correspondence electrically connects；
By applying detection voltage between the conductive layer and described power electrode of described electro-optic conversion screen, described detection voltage passes sequentially through described power electrode and is transferred to described first lineFigureCase, described through hole, described 4th circuitFigureCase or described 4th circuitFigureCase, described through hole, described first lineFigureCase, it is achieved described electro-optic conversion screen shows the detection of described circuit boardFigureCase.
In order to reach above-mentioned or other purpose, another aspect of the invention provides a kind of detection method, and for testing circuit plate, described circuit board has both sides, and side is disposed with multiple odd-numbered line first line in array distributionFigureCase and the second circuit of even number lineFigureCase, opposite side is disposed with multiple odd-numbered line the 4th circuit in array distributionFigureCase and the 5th circuit of even number lineFigureCase, described first, fourth circuitFigureCase and described second, five circuitsFigureElectrical connection is realized by through hole respectively between case, including:
Electro-optic conversion screen is placed in the side of circuit board, and described electro-optic conversion screen includes upper substrate, infrabasal plate and is located in the electro-optic conversion medium between described upper and lower substrate, and described upper substrate is provided with conductive layer near described electro-optic conversion media side；
Power panel is placed in the opposite side of described circuit board, and described power panel has multiple power electrode, the plurality of power electrode respectively with the plurality of second circuitFigureCase or multiple 5th circuitFigureCase correspondence electrically connects；
By applying detection voltage between the conductive layer and described power electrode of described electro-optic conversion screen, described detection voltage passes sequentially through described power electrode and is transferred to described second circuitFigureCase, described through hole, described 5th circuitFigureCase or described 5th circuitFigureCase, described through hole, described second circuitFigureCase, it is achieved described electro-optic conversion screen shows the detection of described circuit boardFigureCase.
Compared with prior art, the invention have the advantages that
The present invention is by providing voltage to circuit board to be detected, make the electro-optic conversion medium generation brightness flop in electro-optic conversion screen or color change, thus go out circuit electric characteristic in electro-optic conversion screen display, finally can accurately, the short circuit of decision circuitry intuitively and open circuit conditions.Can reduce detection voltage, intensifier reliability and durability, improve detection efficiency, increase electro-optic conversion screen can the detection device for electric circuit inspection of range of application and the method for electric circuit inspection thereof.
Accompanying drawing explanation
By referenceAccompanying drawingDescribing embodiment in detail, above and other objects of the present invention, feature and advantage can become apparent,In accompanying drawing:
Figure 1The section detecting device for schematically showing the present invention simplifies signalFigure；
Figure 2For schematically showing the section signal of the detection device of the present invention one specific embodimentFigure；
Figure 3For schematically showingFigure 2The concrete structure signal of middle microcapsuleFigure；
Figure 4A is the three-dimensional signal schematically showing present invention circuit board to be testedFigure；
Figure 4B is for schematically showing present invention circuit board to be testedUpper tableThe structural representation in faceFigure；
Figure 4C is for schematically showing present invention circuit board to be testedFollowing tableThe structural representation in faceFigure；
Figure 5Detection device edge for another specific embodiment of the present inventionFigure 6The section signal in electric light display screen A-A ' direction in A, 6BFigure；
Figure 6A isFigure 5Middle detection device applies electro-optic conversion screen display effect signal during first group of voltageFigure；
Figure 6B isFigure 5Middle detection device applies electro-optic conversion screen display effect signal during second group of voltageFigure；
Figure 7Illustrate for schematically showing detection picture when display exception occurs in circuit board regional area of the present inventionFigure；
Figure 8For schematically showing the present inventionFigure 7When in detection device, through hole open circuit occurs in circuit board, the section along B-B ' direction is illustratedFigure；
Figure 9For circuit board regional area after schematically showing Switching power polarity of the present invention, detection picture signal during display exception occursFigure；
Figure 10 for schematically showing the present inventionFigure 9Detection device in circuit board time through hole open circuit occurs section along B-B ' direction illustrateFigure；
Figure 11 illustrates for schematically showing detection picture time short circuit occurs in circuit board regional area of the present inventionFigure；
Figure 12 for schematically showing the present inventionFigure 1When in 1 detection device, short circuit occurs in circuit board, the section along C-C ' direction is illustratedFigure；
Figure 13 there is detection picture signal during short circuit for circuit board regional area after schematically showing Switching power polarity of the present inventionFigure；
Figure 14 for schematically showing the present inventionFigure 1When in 3 detection devices, short circuit occurs in circuit board, the section along C-C ' direction is illustratedFigure；
Figure 15 for schematically showing the section simplified pinciple signal of another embodiment of the present invention detection deviceFigure；
Figure 16 illustrate for schematically showing the section along D-D ' direction of the detection device that the present invention one specific embodiment odd-numbered line powers upFigure；
Figure 17 for schematically showing the present inventionFigure 1Detection picture signal when circuit board under test in 6 is normalFigure；
Figure 1Detection picture signal when 8A is for schematically showing still another embodiment circuit board under test exception of the present inventionFigure；
Figure 18B is for schematically showing the present inventionFigure 1When in the detection device of 8A, through hole open circuit occurs in circuit board, the section along E-E ' direction is illustratedFigure；
Figure 19A detects picture signal for schematically showing when another specific embodiment circuit board under test of the present invention is short-circuitedFigure；
Figure 19B is for schematically showing the present inventionFigure 1Circuit board in the detection device of 9AUpper tableUpper thread roadFigureWhen short circuit occurs in case, the section along F-F ' direction is illustratedFigure；
Figure 19C is for schematically showing the present inventionFigure 1Circuit board in the detection device of 9AFollowing tableUpper thread roadFigureWhen short circuit occurs in case, the section along F-F ' direction is illustratedFigure；
Figure 20 for schematically showing the section signal of the detection device that the above embodiment of the present invention even number line powers upFigure；
Figure 21 normally detects picture for schematically showing when the above embodiment of the present invention circuit board under test even line electrode powers up；
Figure 2Detection picture signal 2A occurs open circuit for schematically showing when the above embodiment of the present invention circuit board under test even line electrode powers up timeFigure；
Figure 22B is for schematically showing the present inventionFigure 2Circuit board in 2A detection deviceFollowing tableDuring the short circuit of face, the section along H-H ' direction is illustratedFigure；
Figure 23A detects picture signal for schematically showing when the above embodiment of the present invention circuit board under test is short-circuitedFigure；
Figure 23B is for schematically showing the present inventionFigure 2Circuit board in 3A detection deviceUpper tableWhen short circuit occurs in face, the section along I-I ' direction is illustratedFigure；
Figure 23C is for schematically showing the present inventionFigure 2Circuit board in 3A detection deviceFollowing tableWhen short circuit occurs in face, the section along I-I ' direction is illustratedFigure。
Detailed description of the invention
Below in conjunction with in the embodiment of the present inventionAccompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Figure 1Signal is simplified for schematically showing the section of one embodiment of the invention detection deviceFigure。Such as figure 1Shown in, the present invention provides a kind of detection device, and for the circuit defect of testing circuit plate 120, described circuit board has both side surface, and its side or both side surface are disposed with circuitFigureCase, described detection device includes: electro-optic conversion screen 110, is arranged at a side surface of described circuit board 120, is used for showing detectionFigureCase；Power panel 130, is placed in the opposite side surface of described circuit board to be detected 120, for providing voltage for described electro-optic conversion screen and circuit board.
Use the detection method of above-described embodiment device, including: electro-optic conversion screen is placed in the side of circuit board；Power panel is placed in the opposite side of described circuit board；By applying voltage between the conductive layer and described power panel of described electro-optic conversion screen, described electro-optic conversion screen shows the detection of described circuit boardFigureCase.By the detection shown by contrastFigureCase is with normalFigureThe difference of case, it is achieved judge the defect such as short circuit, open circuit present in circuit board to be detected.
The electro-optic conversion screen that the present invention uses is the display screen shown by electro-optic conversion media implementation, electric field level according to the electro-optic conversion medium both sides being added on electro-optic conversion screen or size of current, change the distribution of electro-optic conversion medium, thus change optical path direction or color, the final light-out effect changing display screen.Display Technique directly can be transformed into different brightness or the optical signal of different colours the different size of signal of telecommunication, thus demonstratesFigureCase.The present invention utilizes the electro-optical characteristic of Display Technique, according to different brightness or the optical signal of different colours, it is judged that the electric field level between the electro-optic conversion medium both sides being added in display screen, it is achieved low cost, judge the defect of circuit board under test accurately.
Below in conjunction with specific embodiment andAccompanying drawingDetection device and detection method to the present invention describe in detail.
Figure 2Section signal for the detection device of the present invention one specific embodimentFigure。Such as figure 2Shown in, the present invention provides a kind of detection device 200, including: electro-optic conversion screen 210, it is placed in the upside of circuit board 220 to be detected, is used for showing detectionFigureCase；Power panel 230, is placed in the downside of described circuit board to be detected 220, for providing voltage for described electro-optic conversion screen 210 and described circuit board 220.Such as figure 2Shown in, electro-optic conversion screen 210, including upper substrate 211, infrabasal plate 214, and it is clipped in the electro-optic conversion medium 213 between upper substrate 211, infrabasal plate 214.Upper substrate 211 covers conductive layer 212 near electro-optic conversion medium 213 side, and conductive layer 212 is preferably transparent tin indium oxide (ITO) conducting film.Upper substrate 211, infrabasal plate 214 can be glass substrate or resin (PET) substrate.Infrabasal plate is preferably the multi-layer film structure that organic membrane replaces with inoranic membrane, it is also possible to for silicon dioxide, the isopyknic insulation film of aluminium sesquioxide.
Such as figure 2Shown in, circuit board 220 includes base material 223, is positioned at base material 223Upper tableFace is disposed withUpper tableUpper thread road 221, is positioned at base material 223Following tableFaceFollowing tableUpper thread road 224, connectsUpper tableUpper thread road 221 withFollowing tableThe through hole 222 on upper thread road 224.Upper tableUpper thread road 221,Following tableUpper thread road 224 is formed by conductive material；ConnectUpper tableUpper thread road 221 withFollowing tableThe through hole 222 on upper thread road 224, through base material 223, has and is electrically connected function.
Such as figure 2Shown in, power panel 203 includes base plate 231, is positioned at base plate 231Upper tableThe power electrode 232 in face.Power electrode 232 is formed by the metal material conducted electricity, external power supply.Power electrode 232 and circuit board 220Following tableUpper thread road about 224 one_to_one corresponding.Preferably, power electrode 232 be strip electrode or array distribution regular shape distribution electrode.
In conjunction with referenceFigure 2WithFigure 3, in electro-optic conversion medium 213 preferably microcapsule, it is filled with the solution 213c of electronegative black particles 213b and white particles 213a of positively charged.Under the effect of electric field, black particles 213b can correspondingly move up and down with white particles 213a.When being not added with voltage, black and white particle 213b is suspended in pigmented fluids 213c, and electro-optic conversion screen is shown that the color of solution；After making alive, electronegative black particles 213b moves on to positive pole side, and white particles 213a of positively charged moves on to negative pole side.By viewing detection picture, can the direct defect such as the short circuit on decision circuitry plate 220, open circuit.Owing to the contrast of black-white colors is high, by the mobile display color distortion of black and white particle, form height contrast parallax, facilitate tester's naked eyes direct viewing to judge, carry out optical detection differentiation without extra precision optical instrument.
Figure 4A is the three-dimensional signal that the present invention schematically shows circuit board under test of the present inventionFigure。Such as figure 4Shown in A, in the one of circuit board 220 implements,Upper tableUpper thread roadFigureCase 223a identicalFigureCase unit is array configuration,Following tableUpper thread roadFigureCase 223b identicalFigureCase unitFigureCase also configures in array,Upper tableUpper thread roadFigureCase 223a withFollowing tableUpper thread roadFigureCase 223b realizes being electrically connected by internal through hole 222.
Figure 4B is that the present invention schematically shows present invention circuit board to be testedUpper tableUpper thread roadFigureThe plane signal of caseFigure。Such as figure 4Shown in B, at circuit boardUpper tableThe array of face 223aFigureIn case, each arrayFigureCase unit comprises odd-numbered line first lineFigureCase 221a, such as spillFigureCase；Even number line the second circuitFigureCase 221c, such as convexFigureCase.Odd-numbered line first lineFigureCase 221a and even number line the second circuitFigureThe formation metal partition spaced a distance of case 221cFigureCase 221b, wherein, first and secondFigureCase is metal line.
Figure 4C is that the present invention schematically shows present invention circuit board to be testedFollowing tableUpper thread roadFigureCase plane is illustratedFigure。Such as figure 4Shown in C,Following tableThe array of face 223bFigureIn case, each arrayFigureCase unit comprises odd-numbered line the 4th circuitFigureCase 224a, even number line the 5th circuitFigureCase 224c, odd-numbered line the 4th circuitFigureCase 224a and even number line the 5th circuitFigureMetal derby 224b between case 224c, wherein fourth, fifth may be selected to be square metal blockFigureCase.
ReferenceFigure 4A to 4C,Upper tableUpper thread roadFigureCase 223a withFollowing tableFace 223bFigureCase realizes being electrically connected specially odd-numbered line first line by internal through hole 222FigureCase 221a and odd-numbered line the 4th circuitFigureCase 224a realizes being electrically connected by through hole 222.Even number line the second circuitFigureCase 221c and even number line the 5th circuitFigureCase 224c realizes being electrically connected by through hole 222.And described 4th circuitFigureCase and described 5th circuitFigureCase is separated by metal derby 224b.Described metal derby 224b does not has making alive in circuit board real work, and it can play the effects such as release electrostatic when real work.
Figure 5Circuit for another specific embodiment of present invention detection device connects section signalFigure。Such as figure 5Shown in, the present invention provides a kind of circuit board line characteristic detecting method step as follows:
A, power panel 330, circuit board 320 are fitted with electro-optic conversion screen 310, and described circuit board 320 and described power panel 330, by fitting after exactitude position, make the first power electrode 332b on power panel 330 and odd-numbered line the 4th circuit on circuit board 320FigureCase 324a is corresponding and contacts；Make the second source electrode 332a on power panel 330 and even number line the 5th circuit on circuit board 320FigureCase 324c is corresponding and contacts.
B, the first power line 333b of power panel 330 being connected the first power supply 342, apply the first voltage V1, described first voltage being applied on described first power line 333b is by being transmitted to the odd-numbered line of circuit board 330 after the first power electrode 332bFollowing tableFace the 4th circuitFigureCase 324a, then it is transmitted to odd-numbered line by through hole 322Upper tableFace first lineFigureCase 321a；The second source line 333c of power panel 330 being switched on power 343, applies the second voltage V2, described second voltage being applied on described second source line 333c is by being transmitted to the even number line of circuit board 320 after second source electrode 332aFollowing tableFace the 5th circuitFigureCase 324c, then it is transmitted to even number line by through hole 322Upper tableFace the second circuitFigureCase 321c；The conductive layer 312 of electro-optic conversion screen 310 is connected the 3rd power supply 341, applies tertiary voltage V3.
C, voltage is set: V1 < V3 < V2, in the odd-numbered line of conductive layer 312 and the circuit board 320 of electro-optic conversion screen 310Upper tableFace first lineFigureBetween case 321a, it is the longitudinal electric field for negative polarity on the downside of positive polarity on the upside of formation, makes the black particles in microcapsule 313 move up white particles simultaneously and move down；Conductive layer 312 and the even number line of circuit board 320 at electro-optic conversion screen 310Upper tableFace the second circuitFigureBetween case 321c, it is the longitudinal electric field for positive polarity on the downside of negative polarity on the upside of formation, makes the white particles in microcapsule 313 move up black particles simultaneously and move down；Not executing alive region, microcapsule state does not change.FormedSuch as figure 6Display picture shown in A: corresponding odd-numbered line on electric light display screen 310Upper tableFace first lineFigureCase region 315a shows black, corresponding even number lineUpper tableFace the second circuitFigureCase region 315b shows white, the color of other regions display microcapsule solution.
D, continue to arrange voltage: V1 > V3 > V2, in the odd-numbered line of conductive layer 312 and the circuit board 320 of electro-optic conversion screen 310Upper tableFace first lineFigureBetween case 321a, it is the longitudinal electric field for positive polarity on the downside of negative polarity on the upside of formation, makes the white particles in microcapsule 313 move up black particles simultaneously and move down；Conductive layer 312 and the even number line of circuit board 320 at electro-optic conversion screen 310Upper tableUpper thread roadFigureBetween case 321c, it is the longitudinal electric field for negative polarity on the downside of positive polarity on the upside of formation, makes the black particles in microcapsule 313 move up white particles simultaneously and move down；Not executing alive region, microcapsule state does not change.FormedSuch as figure 6Display picture shown in B: corresponding odd-numbered line on electric light display screen 310Upper tableFace first lineFigureCase region 315a shows white, corresponding even number lineUpper tableUpper thread roadFigureCase 315b display black, the color of other regions display microcapsule solution.
E, actually detected during, according to the display effect of electro-optic conversion screen, withFigure 6Normal detection picture contrast shown in A, 6B, it can be determined that the electrology characteristic of circuit board line.
In concrete implementation, described display result is the photoelectric display effect photoelectric display Contrast on effect with normal described circuit board shown in 6A, 6B of described circuit board to be detected, judges short circuit or the position of open circuit on described circuit board again according to the position of display defect.
In concrete implementation, occurSuch as figure 7During shown detection picture, the background color of electro-optic conversion screen 300 is the color of electro-optic conversion microcapsule solution, first lineFigureCase region 315a is black region, and its corresponding electronegative black particles moves to electro-optic conversion screen 300Upper tableFace, the second circuitFigureCase region 315b is white portion, and the white particles of its corresponding positively charged moves to electro-optic conversion screen 300Upper tableFace.According to display effect, can tentatively judge at the 3rd of electro-optic conversion screen 310FigureCase region 316a and the 4th circuitFigureCase region 316b occurs in that displayFigureCase is abnormal, by withFigure 6A, 6B normal pictures contrasts, and can determine whetherFigureCase abnormal area corresponding circuits plate respective regionsUpper tableUpper thread roadFigureCase disappearance orFollowing tableUpper thread roadFigureCase lacks, or through hole open circuit.Upper tableUpper thread roadFigureCase lacks, orFollowing tableUpper thread roadFigureCase lacks, or the identical consequence of through hole open circuit is not apply voltage below corresponding region 316a and region.
As a specific embodiment,Figure 8Detect circuit board in device for the present invention and the section signal of through hole open circuit occursFigure, in conjunction withFigure 7The detection picture of shown detection device.?Figure 8In, the 3rd power supply 341 ground connection, second source 342 exports negative voltage, and the first power supply 343 exports positive voltage.Connecting transparency conducting layer 312 ground connection of the first power supply 341, the power electrode 332b of the odd-numbered line connecting second source 342 connects negative voltage, and the power electrode 332a of the even number line connecting power supply 343 connects positive voltage.Correspondingly, corresponding circuits plate 320 odd-numbered line electrode 321a, the white particles of absorption positively charged, the most electronegative black particles is moved upwards up to the surface of electro-optic conversion screen 310, corresponding region display black.Corresponding circuits plate 320 even line electrode 321b, adsorbs electronegative black particles, and the white particles of positively charged is moved upwards up to the surface of electro-optic conversion screen 310, corresponding region display white simultaneously.Owing to circuit board exists through hole open circuit 322a and 322b, correspondenceUpper tableUpper thread roadFigureCase does not apply voltage, the color that electro-optic conversion medium is microcapsule solution of corresponding region 316a and 316b.
As an alternative embodiment, exchange the first power supply 343 and the positive-negative polarity of second source 342,Figure 7Shown detection picture switches toFigure 9Shown detection picture: odd-numbered line first lineFigureCase region 315a switches to white, even number line the second circuit from blackFigureCase region 315b switches to black from white, and through hole open circuit third and fourth occursFigureThere is not the change of color or brightness in case region 316a, 316b.
Figure 10 is correspondingFigure 9The section signal of the detection device of shown detection pictureFigure.?Figure 1In 0, the 3rd power supply 341 ground connection, second source 342 exports positive voltage, and the first power supply 343 exports negative voltage.Connecting transparency conducting layer 312 ground connection of the 3rd power supply 341, the power electrode 332b of the odd-numbered line connecting second source 342 connects negative voltage, and the power electrode 332a of the even number line connecting the first power supply 343 connects positive voltage.Correspondingly, corresponding circuits plate 320 odd-numbered line electrode 321a, adsorb electronegative black particles, the white particles of positively charged is moved upwards up to the surface of electro-optic conversion screen 310, corresponding region display white simultaneously.Corresponding circuits plate odd-numbered line electrode 321b, the white particles of absorption positively charged, the most electronegative black particles is moved upwards up to the surface of electro-optic conversion screen, corresponding region display black.Owing to circuit board exists through hole open circuit 322a and 322b, correspondenceUpper tableFace electrode does not apply voltage, correspondingly third and fourthFigureCase region 316a, 316b electro-optic conversion medium is the color of microcapsule solution.
Figure 11 is circuit board surfaceFigureDetection picture signal when case is short-circuitedFigure。Such as figure 1Shown in 1, the odd-numbered line of electro-optic conversion screen 310FigureCase 315a display black, even number lineFigureCase 315b display white.Adjacent odd-numbered lineFigureCase and even number lineFigureThe solution colour of region 316a, 316b display electro-optic conversion medium that case is short-circuited, this electro-optic conversion screen 310 displaying principle is with above-mentionedFigure 7Corresponding content is identical, does not repeats them here.
As an alternative embodiment,Figure 12 is circuit board surface of the present inventionFigureWhen case is short-circuited?Section is illustratedFigure。Such as figure 1Shown in 2, at circuit board 320Upper tableUpper thread roadFigureThere is short-circuited region 321a in case,Following tableUpper thread roadFigureThere is short-circuited region 324a in case, and the voltage applied information of detection device is as follows: the 3rd power supply 341 ground connection, second source 342 exports negative voltage, and the first power supply 343 exports positive voltage.Connecting transparency conducting layer 312 ground connection of the 3rd power supply 341, the power electrode 332b of the odd-numbered line connecting second source 342 connects negative voltage, and the power electrode 332a of the even number line connecting the first power supply 343 connects positive voltage.Correspondingly, corresponding circuits plate 320 odd-numbered line electrode 321a, the white particles of absorption positively charged, the most electronegative black particles is moved upwards up to the surface of electro-optic conversion screen 310, corresponding region display black.Corresponding circuits plate 320 even line electrode 321b, adsorbs electronegative black particles, and the white particles of positively charged is moved upwards up to the surface of electro-optic conversion screen, corresponding region display white simultaneously.Short-circuited region 316a of circuit board 320,316b, owing to positive-negative polarity neutralizes, corresponding electro-optic conversion medium could not show obvious black and white, the color of approximation display liquid.Preferably, equipment 334 sends alarm signal: lamp dodges or sends the sound, it is also possible to both have concurrently.Equipment 344 connects the first power supply 343 and second source 342 respectively, because the positive pole short circuit of the negative pole of second source 342 and the first power supply 343, is issued by alarm signal after short circuit current being detected by equipment 344.
As an alternative embodiment, exchange the first power supply 343 and the positive-negative polarity of second source 342,Figure 1Detection picture shown in 1 switches toFigure 1Detection picture shown in 3: odd-numbered line first lineFigureCase region 315a switches to white, even number line the second circuit from blackFigureCase region 315b switches to black from white, and through hole open circuit third and fourth occursFigureThere is not the change of color or brightness in case region 316a, 316b.
Figure 14 is correspondingFigure 1The section signal of the detection device of detection picture shown in 3Figure。Such as figure 1Shown in 4, at circuit board 320Upper tableUpper thread roadFigureThere is short-circuited region 316a in case,Following tableUpper thread roadFigureThere is short-circuited region 316b in case.ReferenceFigure 14, the voltage applied information of detection device 300 is as follows: the 3rd power supply 341 ground connection, second source 342 exports positive voltage, and the first power supply 343 exports negative voltage.Connecting transparency conducting layer 312 ground connection of the 3rd power supply 341, the power electrode 332b of the odd-numbered line connecting second source 342 connects positive voltage, and the power electrode 332a of the even number line connecting the first power supply 343 connects negative voltage.Correspondingly, corresponding circuits plate 320 odd-numbered line electrode 321a, adsorb electronegative black particles, the white particles of positively charged is moved upwards up to the surface of electro-optic conversion screen 310, corresponding region display white simultaneously.Corresponding circuits plate even line electrode 321c, the white particles of absorption positively charged, the most electronegative black particles is moved upwards up to the surface of electro-optic conversion screen, corresponding region display black.Short-circuited region 316a of circuit board 320,316b, owing to positive-negative polarity neutralizes, corresponding electro-optic conversion medium could not show obvious black and white, the color of approximation display liquid.Meanwhile, equipment 344 sends alarm signal: lamp dodges or sends the sound, it is also possible to both have concurrently.Equipment 344 connects the first power supply 343 and second source 342 respectively, because the negative pole short circuit of the positive pole of second source 342 and the first power supply 343, just can send alarm signal after being detected by equipment 344.
Electro-optic conversion screen in the detection device of the present invention one preferred embodiment uses micro-cup type electro phoretic display device, and micro-cup structure has the advantages such as the arbitrariness in moulding, structural intergrity and mechanical stability.The display effect of micro-cup structure and structural strength can be adjusted by the change of shape and size.Such as figure 1Micro-cup electrophoretic display technology shown in 5 relies on special micro-cup structure, it is possible to obtain color separation and excellent mechanical performance.In micro-cup structure, the size of micro-cup is generally about 50um, comprises white particles 413b of positively charged and the solution 413a of black in micro-cup.DisplayFigureThe resolution of shape is unrelated with the shape size of micro-cup, and is depending on the arrangement of the electrode 414a of bottom backplate, in i.e. the data from different pixels electrode can be displayed in same micro-cup.?Figure 1In 5, applying voltage between the transparency conducting layer 412 and the electrode 414a of infrabasal plate of upper substrate 411, during electrode 414a inclined negative polarity, white particles is gathered in bottom, and on display screen, respective regions 410a is shown as black；Electrode 414a polarization polarity chron white particles is gathered in top, and on display screen, respective regions 410a is shown as white.Middle micro-cup is belonging respectively to two different pixel regions in left-half with right half part, but can normally show in the same old way.Therefore, micro-cup thin film need not precisely para-position when fitting with bottom backplate.
Figure 16 is the present invention one specific embodiment, the invention provides a kind of detection device 400, the structure of the detecting device of the present embodiment is roughly the same with above-described embodiment with detection method, and its electro-optic conversion screen differing only in the present embodiment have employed micro-cup type electro phoretic display device, does not repeats them here.
Another embodiment of the present invention additionally provides a kind of detection method, and this detection method is applicable to the detection device of each embodiment above-mentioned, and it is as follows that this detection uses the detection device of above-described embodiment to carry out the method step of circuit board line Characteristics Detection:
A, power panel 430, circuit board 420 are fitted with electro-optic conversion screen 410, and described circuit board 420 and described power panel 430, by fitting after exactitude position, make the power electrode 432 on power panel 430 square with the odd-numbered line on circuit board 420FigureCase 432 is corresponding and contacts.
B, switching on power 440 between the conductive layer 412 and the power line 433 of power panel 430 of electro-optic conversion screen 410, apply voltage Vc, the described detection voltage being applied on described power line 433 is by being transmitted to the odd-numbered line of circuit board 420 after power electrode 432Following tableUpper thread roadFigureCase 424, then it is transmitted to odd-numbered line by through hole 422Upper tableUpper thread roadFigureCase 421.
C, in the odd-numbered line of conductive layer 412 and circuit board 420 of electro-optic conversion screen 410Upper tableUpper thread roadFigureBetween case 421, described applying voltage Vc forms electric field, makes the white particles in micro-cup 413 move up and down: corresponding odd-numbered lineUpper tableUpper thread roadFigureThe micro-cup of case 421, white particles is positioned at conductive layer 412 side；Do not execute alive even number lineUpper tableUpper thread roadFigureMicro-cup state above case does not change, and is shown as the secondary colour of dark solution and white particles.
D, display picture according to electro-optic conversion screen 410, normally detect picture contrast with electro-optic conversion screen, it can be determined that the electrology characteristic of circuit board line.
As a specific embodiment,Figure 17 show circuit board normal time detection picture signalFigure。Such as figure 1Shown in 7, when the line characteristic of odd-numbered line circuit board is normal, complete display odd-numbered line on electro-optic conversion screen 410Upper tableUpper thread roadFigureCase 415.Correspondingly, when completely showing on electro-optic conversion screenSuch as figure 1During picture shown in 7, can be with preliminary judgement circuit board odd-numbered lineUpper tableUpper thread roadFigureCase and odd-numbered lineFollowing tableUpper thread roadFigureCase and between the electrology characteristic of through hole normal.
In concrete implementation, described display result be described circuit board to be detected photoelectric display effect withFigure 1The photoelectric display Contrast on effect of normal described circuit board shown in 7, judges short circuit or the position of open circuit on described circuit board again according to the position of display defect.
Figure 1Detection picture signal when 8A show circuit board exceptionFigure.In conjunction with referenceFigure 18B, switch on power between the conductive layer 413 and the power line 433 of power panel 430 of electro-optic conversion screen 440, after applying voltage Vc, display on electro-optic conversion screen 410Such as figure 1Picture shown in 8A: by corresponding circuits plate odd-numbered lineUpper tableUpper thread roadFigureThe display that the display unit 1802 of case is constitutedFigureIn case array, withFigure 17 compare, and do not have display unit at position 416FigureCase.Position according to display defect can be to have occurred and that on circuit board described in preliminary judgementSuch as figure 1Through hole 422a open defect shown in 8B.The existence of through hole 422 open defect, makes the micro-cup on relevant position not controlled by applied voltage Vc, and the white particles in micro-cup does not moves up and down.
Figure 1Detection picture signal when 9A show circuit board short circuitFigure.In conjunction with referenceFigure 19B, switch on power between the conductive layer 412 and the power line 432 of power panel 430 of electro-optic conversion screen 410 440, after applying voltage Vc, appearance on electro-optic conversion screen 410Such as figure 1Picture shown in 9A: by corresponding circuits plate 420 odd-numbered lineUpper tableUpper thread roadFigureThe display that the display unit of case is constitutedFigureIn case array, withFigure 17 compare, and demonstrate corresponding circuits plate odd-numbered line at the 421a of position simultaneouslyUpper tableUpper thread roadFigureCase and corresponding circuits plate even number lineUpper tableUpper thread roadFigureCase.Position according to display defect can be to have occurred and that on circuit board described in preliminary judgementSuch as figure 1The odd-numbered line being connected shown in 9BUpper tableUpper thread roadFigureCase and even number lineUpper tableUpper thread roadFigureCircuit defect between case.The existence of described circuit defect, makes corresponding odd-numbered line on relevant positionUpper tableUpper thread roadFigureCase and even number lineUpper tableUpper thread roadFigureThe micro-cup of case is controlled by applied voltage Vc simultaneously, and the white particles in micro-cup 413 moves up.
In conjunction with reference to 19C, short circuit occurs in circuit boardFollowing tableUpper thread roadFigureIn case, occurSuch as figure 1Connected odd-numbered line shown in 9CFollowing tableUpper thread roadFigureCase and even number lineFollowing tableUpper thread roadFigureThe circuit defect of case 424a, also there will beSuch as figure 1The display of the correspondence position shown in 9AFigureCase.The existence of described circuit defect, makes corresponding odd-numbered line on relevant positionUpper tableUpper thread roadFigureCase and even number lineUpper tableUpper thread roadFigureThe micro-cup of case is controlled by applied voltage Vc simultaneously, and the white particles in micro-cup 413 moves up.
In conjunction with referenceFigure 16 to 19C, the detection method that the present invention provides, detects device testing circuit plate odd-numbered line circuit for the various embodiments described aboveFigureThe detection of the electrology characteristic of case.Corresponding circuits plate even number line circuitFigureThe detection device of the electrology characteristic of case is as follows with detection method:
Such as figure 2Shown in 0, the display device that the present invention provides comprises electro-optic conversion screen 510, circuit board 520, power panel 530, and additional power source 540.In electro-optic conversion screen 510, the upside of micro-cup 513 is conductive layer 512, and the downside of micro-cup 513 is the protective layer 514 processed through anti-steam.In circuit board 520, arrayUpper tableUpper thread roadFigureCase 521 and arrayFollowing tableUpper thread roadFigureCase 524 realizes being electrically connected by through hole 522.Being dispersed with power electrode 532 in power panel 530, power electrode 532 realizes being electrically connected by power line 533 and external power supply 540.The arrangement of power electrode 532 withFollowing tableUpper thread roadFigureThe arrangement of case 524 is corresponding.Corresponding circuits plate even number lineFigureThe detecting step of the circuit electrology characteristic of case is as follows:
A, power panel 530, circuit board 520 are fitted with electro-optic conversion screen 510, and described circuit board 520 and described power panel 530, by fitting after exactitude position, make the power electrode 532 on power panel 530 and the even number line side on circuit board 520
ShapeFigureCase, i.e.Following tableUpper thread roadFigureCase 524 is corresponding and contacts.
B, switching on power 540 between the conductive layer 512 and the power line 533 of power panel 530 of electro-optic conversion screen 510, apply voltage Vc, the described detection voltage being applied on described power line 533 is by being transmitted to the odd-numbered line of circuit board 520 after power electrode 532Following tableUpper thread roadFigureCase 524, then it is transmitted to even number line by through hole 522Upper tableUpper thread roadFigureCase 521.
C, in the even number line of conductive layer 512 and circuit board 530 of electro-optic conversion screen 510Upper tableUpper thread roadFigureBetween case 532, described applying voltage Vc forms electric field, makes the white particles in micro-cup 513 move up: not execute alive even number lineUpper tableUpper thread roadFigureMicro-cup 513 state above case does not change.
Display effect according to electro-optic conversion screen, it is judged thatSuch as figure 2The electrology characteristic of the circuit board line shown in 0.Such as figure 2Shown in 1, when the line characteristic of even number line circuit board is normal, complete display even number line on electro-optic conversion screen 510Upper tableUpper thread roadFigureCase 515.Correspondingly, when completely showing on electro-optic conversion screenSuch as figure 2During picture shown in 1, can be with preliminary judgement circuit board even number lineUpper tableUpper thread roadFigureCase and odd-numbered lineFollowing tableUpper thread roadFigureCase and between the electrology characteristic of through hole normal.
In concrete implementation, described display result be described circuit board to be detected photoelectric display effect withFigure 2The photoelectric display Contrast on effect of normal described circuit board shown in 1, judges short circuit or the position of open circuit on described circuit board again according to the position of display defect.
In one embodiment, in conjunction with referenceFigure 22A and 22B, switches on power between the conductive layer and the power line of power panel of electro-optic conversion screen 510, after applying voltage Vc, electro-optic conversion screen 510 occursSuch as figure 2Picture shown in 2A: by corresponding circuits plate even number lineUpper tableUpper thread roadFigureThe display that the display unit 513 of case is constitutedFigureIn case array, withFigure 21 compares, and does not has display unit at position 516FigureCase.Position according to display defect can be to have occurred and that on circuit board described in preliminary judgementSuch as figure 2Through hole 522a open defect shown in 2B.The existence of through hole open defect, makes the micro-cup on relevant position not controlled by applied voltage Vc, and the white particles in micro-cup 513 does not moves up and down.
In one embodiment, in conjunction with referenceFigure 23A and 23B, switches on power between the conductive layer and the power line of power panel of electro-optic conversion screen 510, after applying voltage Vc, electro-optic conversion screen 510 occursSuch as figure 2Picture shown in 3A: by corresponding circuits plate even number lineUpper tableUpper thread roadFigureThe display that the display unit of case is constitutedFigureIn case array, withFigure 21 compares, and demonstrates corresponding circuits plate even number line at position 516 simultaneouslyUpper tableUpper thread roadFigureCase and corresponding circuits plate odd-numbered lineUpper tableUpper thread roadFigureCase.Position according to display defect can be to have occurred and that on circuit board described in preliminary judgementSuch as figure 2The even number line being connected shown in 3BUpper tableUpper thread roadFigureCase and odd-numbered lineUpper tableUpper thread roadFigureCircuit defect between case 521a.The existence of described circuit defect, makes corresponding even number line on relevant positionUpper tableUpper thread roadFigureCase and odd-numbered lineUpper tableUpper thread roadFigureThe micro-cup of case is controlled by applied voltage Vc simultaneously, and the white particles in micro-cup 513 moves down.
In one embodiment, at circuit boardFollowing tableUpper thread roadFigureIn case, occurSuch as figure 2Connected odd-numbered line shown in 3CFollowing tableUpper thread roadFigureCase and even number lineFollowing tableUpper thread roadFigureThe circuit defect of case 524a, also there will beSuch as figure 1The display of the correspondence position 516 shown in 9AFigureCase.The existence of described circuit defect, makes corresponding odd-numbered line on relevant positionUpper tableUpper thread roadFigureCase and even number lineUpper tableUpper thread roadFigureThe micro-cup of case is controlled by applied voltage Vc simultaneously, and the white particles in micro-cup 513 moves up.
Preferably, described electro-optic conversion screen is particle mobile model Electronic Paper based on micro-cup electrophoretic display technology.Detecting odd-numbered lineFigureAfter the circuit electrology characteristic of case, in detection even number lineFigureBefore the circuit electrology characteristic of case,Figure 2In display device shown in 0, between the conductive layer and the power line of power panel of Electronic Paper, apply backward voltage-Vc, make the black of display in Electronic PaperFigureCase reverts to white, thus the whole face of Electronic Paper reverts to white.
Present invention utilizes electro-optic conversion technology, i.e. basis and be added in the electric field level of the electro-optic conversion medium both sides such as liquid crystal, thus change the light-out effect of electro-optic conversion medium.Display Technique based on electro-optic conversion directly can be transformed into the different size of signal of telecommunication optical signal of different brightness, and is converted into the optical signal of different colours, thus is shown asFigureCase.Electro-optical characteristic from Display Techniques such as liquid crystal is counter to be pushed away, can be according to different brightness or the optical signal of different colours, it is judged that be added in the electric field level of the both sides of the electric light display mediums such as liquid crystal.Utilize this feature, can be by the on or off characteristic of the display device test circuit such as liquid crystal.
The detection device of present invention offer and detection method, the electrology characteristic of display device testing circuit plate based on electro-optic conversion, more visual pattern, it is possible to achieve circuit board frontFigureCase disposably detects.Comparing flying probe and be up to the detection voltage of up to a hundred volts, for the display device testing circuit plate of electro-optic conversion, detection voltage declines an order of magnitude, even has only to several volt.When comparing flying probe, flying needle can prick the circuit on circuit boardFigureCase, with display device testing circuit plate based on electro-optic conversion, does not has additional mechanical force, does not results in circuit connectionFigureThe surface damage of case.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can be carried out multiple equivalents, these equivalents belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, in the case of reconcilable, can be combined by any suitable means.In order to avoid unnecessary repetition, various possible compound modes are illustrated by the present invention the most separately.
Claims (22)
1. a detection device, for testing circuit plate, described circuit board has both sides, and described both sides are disposed with circuit diagram
Case, including:
Electro-optic conversion screen, is placed in the side of described circuit board, is used for showing check pattern；
Power panel, is placed in the opposite side of described circuit board, for providing voltage for described electro-optic conversion screen and circuit board.
Detection device the most according to claim 1, it is characterised in that: described electro-optic conversion screen also include upper substrate, under
Substrate and be located in the electro-optic conversion medium between described upper and lower substrate, described upper substrate is near described electric light
Conversion media side is provided with conductive layer.
Detection device the most according to claim 2, it is characterised in that: described electro-optic conversion medium is at different voltage shapes
Under state or different current status, can show different brightness or different colors or different brightness with
The combination of different colours.
Detection device the most according to claim 3, it is characterised in that: described electro-optic conversion medium includes black bands electrochondria
Son and white charged particles are distributed in coloring solution or clear solution.
5. according to the detection device one of Claims 1-4 Suo Shu, it is characterised in that: described power panel also include base plate with
And it is arranged at the power electrode on described base plate.
6. a detection device, for testing circuit plate, described circuit board has both sides, and described both sides are disposed with circuit diagram
Case, including:
Electronic Paper, is placed in a side surface of described circuit board, is used for showing check pattern；
Power panel, is placed in the opposite side surface of described circuit board, has base plate and the power supply electricity being arranged on described base plate
Pole, for providing voltage for described electro-optic conversion screen.
Detection device the most according to claim 6, it is characterised in that: described circuit board has both sides, near Electronic Paper
Side is disposed with multiple upper surface line unit, is disposed with multiple lower surface line unit near power panel side,
Electrical connection is realized by through hole between described upper surface line unit and described lower surface line unit.
Detection device the most according to claim 7, it is characterised in that: the plurality of upper surface line unit is that array divides
Cloth, each described upper surface line unit includes: the first line pattern of odd-numbered line and the second circuit of even number line
Insulate between pattern, and described first line pattern and described second line pattern and separate.
Detection device the most according to claim 8, it is characterised in that: the plurality of lower surface line unit is that array divides
Cloth, each described lower surface line unit includes: the 4th line pattern of odd-numbered line and the 5th circuit of even number line
Pattern, and described 4th line pattern separated by metal derby with described 5th line pattern.
Detection device the most according to claim 8, it is characterised in that: described first line pattern and described 4th line
Road pattern is electrically connected by through hole；Described second line pattern is by the 5th line pattern by through hole electricity even
Connect.
11. according to the detection device described in any one of claim 7-10, it is characterised in that: described power electrode is divided into two groups,
One group is corresponding with described 4th line pattern, and another group is corresponding with described 5th line pattern.
12. according to the detection device described in any one of claim 7-10, it is characterised in that: described power electrode and described the
One of four line patterns or described 5th line pattern correspondence.
13. 1 kinds of detection methods, including:
Being arranged between electro-optic conversion screen and power panel by circuit board to be detected, described electro-optic conversion screen is placed in described circuit
The side of plate, described power panel is placed in the opposite side of described circuit board；
Described power panel applies detection voltage and is supplied to described electro-optic conversion screen by described circuit board；
Described electro-optic conversion screen shows the testing circuit pattern of described circuit board.
14. detection methods according to claim 13, it is characterised in that: described electro-optic conversion screen also include upper substrate,
Infrabasal plate and be located in the electro-optic conversion medium between described upper and lower substrate, described upper substrate is near described electricity
Light conversion media side is provided with conductive layer；Described power panel has base plate and is arranged at the power supply on described base plate
Electrode；The described side of described circuit board is disposed with multiple upper surface line unit, and described opposite side is disposed with many
Individual lower surface line unit, and described upper surface circuit electrically connected with described lower surface circuit by through hole.
15. detection methods according to claim 14, it is characterised in that: described detection voltage passes sequentially through described following table
Upper thread road and described through hole apply to described upper surface circuit, and applying one voltage is in described conductive layer, make described
The described electro-optic conversion medium of electro-optic conversion screen produces voltage difference between transparency conducting layer and upper surface circuit.
16. detection methods according to claim 14, it is characterised in that: the plurality of upper and lower surface lines unit divides
Not in array distribution, described upper surface line unit includes the first line pattern and the second of even number line of odd-numbered line
Line pattern；Described lower surface line unit includes the 4th line pattern and the 5th circuit of even number line of odd-numbered line
Pattern；Wherein, described first line pattern is electrically connected by through hole with described 4th line pattern；Described
Two line patterns are electrically connected by through hole by the 5th line pattern.
17. detection methods according to claim 16, it is characterised in that: power panel is divided into odd-numbered line and even number line electricity
Source electrode, connects described odd-numbered line power electrode the first voltage V1, described first voltage V1 and passes sequentially through institute
State the 4th pattern and described through hole is transmitted to first line pattern described in odd-numbered line；By described even number line power electrode
Connect the second voltage V2, described second voltage V2 and be transmitted to described second line by the 5th pattern and described through hole
Road pattern；The conductive layer of electro-optic conversion screen is connected tertiary voltage V3.
18. detection methods according to claim 17, it is characterised in that: voltage: the first voltage V1 < the 3rd electricity is set
Pressure V3 < second voltage V2, between described conductive layer and described first line pattern, is formed with described conductive layer
For positive polarity the longitudinal electric field with described first line pattern as negative polarity；At described conductive layer and described second
Between line pattern, formed with described second line pattern indulging as positive polarity and with described conductive layer as negative polarity
To electric field.
19. detection methods according to claim 17, it is characterised in that: voltage: the first voltage V1 > the 3rd electricity is set
Pressure V3 > second voltage V2, between described conductive layer and described first line pattern, is formed with described conductive layer
For negative polarity the longitudinal electric field with described first line pattern as positive polarity；At described conductive layer and described second
Between line pattern, formed with described second line pattern indulging as negative polarity and with described conductive layer as positive polarity
To electric field.
20. according to the detection method described in any one of claim 13-19, it is characterised in that: also include turning according to described electric light
Change the described testing circuit pattern of screen, with normal testing circuit pattern correspondance, it is judged that described circuit under test printed line
The electrology characteristic on road.
21. 1 kinds of detection methods, for testing circuit plate, described circuit board has both sides, and side is disposed with multiple in array
The odd-numbered line first line pattern of distribution and the second line pattern of even number line, opposite side is disposed with multiple in array
Distribution odd-numbered line the 4th line pattern and the 5th line pattern of even number line, described first, fourth line pattern with
Electrical connection is realized by through hole respectively between described second, five line patterns, including:
Electro-optic conversion screen is placed in the side of circuit board, and described electro-optic conversion screen includes upper substrate, infrabasal plate and sandwiched
Electro-optic conversion medium between described upper and lower substrate, described upper substrate is provided with near described electro-optic conversion media side
Conductive layer；
Power panel is placed in the opposite side of described circuit board, and described power panel has multiple power electrode, the plurality of power supply
Electrode electrical connection corresponding with the plurality of first line pattern or multiple 4th line pattern respectively；
By applying detection voltage, described detection voltage between the conductive layer and described power electrode of described electro-optic conversion screen
Pass sequentially through described power electrode and be transferred to described first line pattern, described through hole, described 4th line pattern or institute
State the 4th line pattern, described through hole, described first line pattern, it is achieved described electro-optic conversion screen shows described circuit board
Check pattern.
22. 1 kinds of detection methods, for testing circuit plate, described circuit board has both sides, and side is disposed with multiple in array
The odd-numbered line first line pattern of distribution and the second line pattern of even number line, opposite side is disposed with multiple in array
Distribution odd-numbered line the 4th line pattern and the 5th line pattern of even number line, described first, fourth line pattern with
Electrical connection is realized by through hole respectively between described second, five line patterns, including:
Electro-optic conversion screen is placed in the side of circuit board, and described electro-optic conversion screen includes upper substrate, infrabasal plate and sandwiched
Electro-optic conversion medium between described upper and lower substrate, described upper substrate is provided with near described electro-optic conversion media side
Conductive layer；
Power panel is placed in the opposite side of described circuit board, and described power panel has multiple power electrode, the plurality of electricity
Source electrode electrical connection corresponding with the plurality of second line pattern or multiple 5th line pattern respectively；
By applying detection voltage, described detection voltage between the conductive layer and described power electrode of described electro-optic conversion screen
Pass sequentially through described power electrode and be transferred to described second line pattern, described through hole, described 5th line pattern or institute
State the 5th line pattern, described through hole, described second line pattern, it is achieved described electro-optic conversion screen shows described circuit board
Check pattern.
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| CN107369388A (en) * | 2017-06-05 | 2017-11-21 | 莱特泰克（昆山）光电科技有限公司 | A kind of transparent video glass-making processes of multilayer LED |
| TWI826003B (en) * | 2022-03-23 | 2023-12-11 | 群創光電股份有限公司 | Sensing electronic device |
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| CN201464594U (en) * | 2009-05-27 | 2010-05-12 | 深圳晶华显示器材有限公司 | COG LCD short-circuit testing device |
| US20110109339A1 (en) * | 2009-11-12 | 2011-05-12 | Seung Seoup Lee | Apparatus and method for inspecting circuit of substrate |
| CN204613338U (en) * | 2015-03-26 | 2015-09-02 | 上海纪显电子科技有限公司 | Pick-up unit |
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| CN107369388A (en) * | 2017-06-05 | 2017-11-21 | 莱特泰克（昆山）光电科技有限公司 | A kind of transparent video glass-making processes of multilayer LED |
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| TWI826003B (en) * | 2022-03-23 | 2023-12-11 | 群創光電股份有限公司 | Sensing electronic device |
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