CN1184486C - Electron product circuit signal position detecting system and its method - Google Patents
Electron product circuit signal position detecting system and its method Download PDFInfo
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- CN1184486C CN1184486C CN 01144715 CN01144715A CN1184486C CN 1184486 C CN1184486 C CN 1184486C CN 01144715 CN01144715 CN 01144715 CN 01144715 A CN01144715 A CN 01144715A CN 1184486 C CN1184486 C CN 1184486C
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- objective table
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Abstract
The present invention relates to a system and a method for the signal positioning detection of an electronic product circuit. The present invention is proposed for providing a system and a method for the detection of an electronic product, which can detect a damaged part of a display to effectively repair damaged parts to reduce the manufacturing cost. The system comprises an objective table provided with a transparent working area, an objective table moving mechanism, a lifting mechanism, a probe assembled on the lifting mechanism, a tester connected with the probe, a moving mechanism, an image inductor arranged on the moving mechanism, and an image display connected with the image inductor, wherein the probe and the image inductor respectively correspond to the parts above and below the objective table. In the method of the present invention, the image inductor is adjusted to be in alignment with the probe; a transparent carrier is placed; a signal generator is connected; the image of an object to be detected is focused; the objective table is adjusted to enable the image of a detected endpoint to be displayed at the center of a cross mark; the probe is adjusted to contact the detected endpoint; the tester receives an output signal from the detected endpoint of the transparent carrier through the probe.
Description
Technical field
The invention belongs to electronic product detecting system and method thereof, particularly a kind of electron product circuit signal position detecting system and method thereof.
Background technology
As shown in Figure 1, known LCD (liquid crystal display device) 10 comprises liquid crystal panel (liquid crystal panel) 100, a plurality of volume bearing-type encapsulating structure (tapecarrier packages is called for short TCPs) 102 and common printed-wiring board (PWB) (common printed wiringboard) 104.Liquid crystal panel 100 owners will comprise upper strata glass substrate 110, lower floor's glass substrate 112 and be clipped in the upper and lower layer of liquid crystal layer between the glass substrate 110,112.
Each winding bearing-type encapsulating structure 102 all has in order to the liquid crystal drive integrated circuit wafer (liquid crystal driverr IC chip) 106 that drives liquid crystal layer and is connected to the outer lead road (outer leads) of its lead-out terminal (outputtermnals)/input terminal (input termnals) and liquid crystal drive integrated circuit wafer 106.Liquid crystal drive integrated circuit wafer 106 is that the lead-out terminal by winding bearing-type encapsulating structure 102 is connected with liquid crystal panel 100, and is connected to common printed-wiring board (PWB) 104 by the input terminal of winding bearing-type encapsulating structure 102.By the circuit on the common printed-wiring board (PWB) 104 to liquid crystal drive integrated circuit wafer 106 transmission signals and power is provided.
Yet,, may be common wiring board 104 or liquid crystal drive integrated circuit wafer 106 defectiveness and can't correctly drive liquid crystal panel 100 according to signal when complete LCD 10 normally during show image; Also may be that liquid crystal panel 100 is impaired and can't demonstrate correct image.And this can by survey one by one with liquid crystal panel 100 on normally the lead-out terminal of the winding bearing-type encapsulating structure 102 that is connected of show image zone confirm really impaired part.Yet, in general, the width of each lead-out terminal of winding bearing-type encapsulating structure 102 is about tens of microns (μ m), and the lead-out terminal that is adjacent is arranged densely, be difficult to use manual mode to be surveyed, the system that needs a kind of lead-out terminal that these can be waitd upon survey accurately to locate and detected.Yet the position detecting system that does not cooperate these needs at present when there is defective in existing its that start after 10 assemblings of a LCD are finished, will must be eliminated whole LCD 10 because of determining damaged part, cause the production capacity loss.
Summary of the invention
The purpose of this invention is to provide a kind ofly detect the display damage position, with effective faulty restoration parts, reduce the electron product circuit signal position detecting system and the method thereof of manufacturing cost.
System of the present invention comprises in order to the objective table that carries thing to be detected, uses objective table travel mechanism, elevating mechanism, probe, tester, travel mechanism, image sensor and the video display of moving stage; At least be provided with a transparent workspace on the objective table; Probe group and is positioned at objective table top on elevating mechanism, and is driven along moving perpendicular to the objective table direction by elevating mechanism; Tester is connected with probe, to receive thing output signal to be detected; Image sensor is installed in the travel mechanism, and is positioned at objective table below and relative with probe; Video display system is connected the image that obtains with the show image inductor with image sensor; Placing the object to be detected on the objective table is LCD, and it comprises that liquid crystal panel and at least one are embedded at liquid crystal panel winding bearing-type encapsulating structure on every side; Liquid crystal panel comprises the layer glass substrate and is formed with connection line in one of them; Connection line comprises and extends around the liquid crystal panel and plural outer lead road that at least a portion is not covered by winding bearing-type encapsulating structure.
The inventive method comprises:
Adjust image sensor
Adjust image sensor with the travel mechanism of electron product circuit signal position detecting system of the present invention, make itself and probe alignment, so that probe is shown in the central point of video display screen cross mark by picked image;
Put thing to be detected
Thing storing to be detected is positioned in the upper area of the transparent workspace of objective table:
Connect signal generator
Thing to be detected is connected with signal generator, and the input signal that utilizes signal generator to provide drives thing to be detected;
Focus on
Make the tested end points of thing to be detected image definition be shown on the screen of video display;
Adjust objective table
By objective table travel mechanism moving stage, so that the image of the tested end points of thing to be detected placed on it is shown in the center of the cross mark of screen;
Adjust probe
Drive the probe edge that is mounted on it by elevating mechanism and move towards objective table, contact with the tested end points of thing to be detected to make probe perpendicular to the objective table direction; Receive the output signal that is subjected to end points from thing to be detected through probe by tester.
Wherein:
Image sensor has autofocus mechanism.
Image sensor has can be along the focusing device perpendicular to movable image inductor mobile mechanism on the objective table direction.
Moving structure comprise the mobile mechanism on a large scale that has moving stage on a large scale respectively and among a small circle the small scope mobile mechanism of moving stage horizontal stroke, vertically move structure.
Video display comprises screen, aims at the cross mark that shows at video display for it when having the probe alignment image sensor on screen.
Tester is an oscillograph.
Image sensor can be the charge coupled cell video camera.
Because system of the present invention comprises objective table, objective table travel mechanism, elevating mechanism, probe, tester, travel mechanism, image sensor and the video display that is provided with transparent workspace; Probe group and is positioned at objective table top on elevating mechanism, and is driven along moving perpendicular to the objective table direction by elevating mechanism; Tester is connected with probe, to receive thing output signal to be detected; Image sensor is installed in the travel mechanism, is positioned at objective table below and relative with probe; Video display system is connected the image that obtains with the show image inductor with image sensor; Placing the object to be detected on the objective table is LCD, and it comprises that liquid crystal panel and at least one are embedded at liquid crystal panel winding bearing-type encapsulating structure on every side; Liquid crystal panel comprises the layer glass substrate and is formed with connection line in one of them; Connection line comprises and extends around the liquid crystal panel and plural outer lead road that at least a portion is not covered by winding bearing-type encapsulating structure; The inventive method comprise with travel mechanism adjust image sensor with probe alignment; Thing storing to be detected is positioned in the upper area of the transparent workspace of objective table: thing to be detected is connected with signal generator, to drive thing to be detected; Focusing is shown on the screen of video display the image of the tested end points of thing to be detected; By objective table travel mechanism moving stage, so that the image of the tested end points of thing to be detected placed on it is shown in the center of the cross mark of screen; Drive probe along moving towards objective table, to contact by elevating mechanism with the tested end points of thing to be detected perpendicular to the objective table direction; Receive the output signal that is subjected to end points from thing to be detected through probe by tester.Electron product circuit signal position detecting system of the present invention and method thereof, because accurate detection and localization, be applicable to detect and arrange fine and close small again end points, therefore can be normally during show image in LCD, use and detect the relevant outer lead road that the defect areas liquid crystal panel is arranged, whether meet thereby detect, thereby judge the liquid crystal panel defectiveness or send winding bearing-type encapsulating structure and the wiring board defectiveness that drives signal by the driving signal of winding bearing-type encapsulating structure output and the signal of signal generator input.Just defective part can be keeped in repair or eliminate by above-mentioned judgement, make good part obtain to make full use of, reduce cost.Not only detect the display damage position, with effective faulty restoration parts, and reduce manufacturing cost, thereby reach purpose of the present invention.
Description of drawings
Fig. 1, be the liquid crystal display device structure schematic sectional view.
Fig. 2, be LCD liquid crystal panel surface configuration figure.
Fig. 3, be the liquid crystal display device structure schematic sectional view.
Fig. 4, for structural representation front elevation of the present invention.
Embodiment
The present invention is for accurately location and detection are positioned at the system of transparency carrier upper extreme point.As shown in Figure 4, electron product circuit signal position detecting system 20 of the present invention comprises board 201, objective table 120, objective table travel mechanism, elevating mechanism 128, probe 126, tester 130, travel mechanism 134, image sensor 132 and video display 130.
Objective table 120 is provided with a transparent workspace at least in order to carrying transparency carrier 121 on it.
Objective table travel mechanism comprises being arranged at respectively and is parallel on objective table 120 planes and is mounted on horizontal moving structure 122 between board 201 and the objective table 120, vertically moves structure 124, with relative board 201 moving stages 120 on longitudinal and transverse direction in mutually perpendicular direction respectively.
Horizontal moving structure 122 and vertically move structure 124 and have (macro-scale) the on a large scale mobile mechanism of moving stage 120 on a large scale and small scope (micro-scale) mobile mechanism of moving stage 120 among a small circle respectively.
Elevating mechanism 128 is mounted on the board 201, and vertical objective table 120 directions in edge are with respect to objective table 120 ascending, descendings.
Probe 126 is mounted on the elevating mechanism 128, and is positioned at objective table 120 tops, drives it relative to transparency carrier 121 upper and lower moving by the ascending, descending of elevating mechanism 128, with contact, leave the transparency carrier 121 that is carried on the objective table 120.
Tester 130 can be oscillograph (oscilloscope), and it is to be connected with probe 126, to receive the signal of transparency carrier 120 by probe 126 outputs.
Travel mechanism 134 is installed on the board 201, and is positioned at objective table 120 belows.
Image sensor 132 can be charge coupled cell video camera (CCD camera), and it is installed in the travel mechanism 134, and is positioned at objective table 120 belows and relative with probe 126.Image sensor 132 the bests have autofocus mechanism, and/or have in addition can be along the focusing device 136 perpendicular to movable image inductor 132 mobile mechanisms on objective table 120 directions.
Video display 138 is to be connected the image that obtains with show image inductor 132 with image sensor 132, it comprises screen (screen) 142, on screen 142, has cross mark 144, when operating system, probe 126 is to aim at image sensor 132, so that probe 126 can be presented at by picked image on the central point of cross mark 144 of video display 138 screens 142.
As shown in Figure 1, LCD 10 to be detected comprises liquid crystal panel 100, a plurality of winding bearing-type encapsulating structure 102 and common printed-wiring board (PWB) 104.Liquid crystal panel 100 comprises upper strata glass substrate 110, lower floor's glass substrate 112 and is folded in the upper and lower layer of liquid crystal layer between the glass substrate 110,112.
As shown in Figure 2, typically be provided with on lower floor's glass substrate 112 of liquid crystal panel 100 by a plurality of signal line (signal lines) 114 and a plurality of sweep traces (scanning lines) 116 matrixes that are configured to, and be provided with by be placed in the pixel electrode of signal line 114 and sweep trace 116 each adjacent confluce as the membrane transistor (thin film trahsistor is called for short TFT) of on-off element.Pixel electrode and membrane transistor are formed among an active area (active area) 1A.Signal line 114 and sweep trace 116 typically extend active area 1A and form fine and close and only tens of certainly microns (μ m) the wide outer lead roads of arrangement; And a plurality of connection pads of formation district 117 is assembled on the outer lead road, a plurality of connection pads district 117 is distributed in outer connection gasket zone (the out-lead bonding that draws around the active area 1A, abbreviation OLB) among the 1B, makes that the plural lead-out terminal of each winding bearing-type encapsulating structure 102 is overlapping with corresponding outer lead road in each connection pad district 117.And as shown in Figure 3, utilize anisotropy conducting film (anisotropic conductive film) 119 to make the lead-out terminal of winding bearing-type encapsulating structure 102 and the outer lead road of liquid crystal panel 100 electrically connect, therefore, transmit on the outer lead road that common wiring board 104 and winding bearing-type encapsulating structure 102 signal that imposes on liquid crystal panel 100 just can mat lower floor glass substrate 112.At this moment, the outer lead road of lower floor's glass substrate 112 of subregion is not covered by winding bearing-type encapsulating structure 102, the outer lead road district 118 that is referred to as not to be capped, the outer lead road of detecting the outer lead road district 118 that is not capped just can obtain its corresponding winding bearing-type encapsulating structure 102 lead-out terminal outputs in order to drive the signal of liquid crystal panel 100.
Each outer lead road in the outer lead road district 118 that is not capped for the lower floor's glass substrate 112 that detects above-mentioned LCD 10 liquid crystal panels 100 with electron product circuit signal position detecting system of the present invention 20 the invention provides a kind of method that is positioned at the transparency carrier upper extreme point in order to accurate detection and localization.
Position finding and detection method of the present invention may further comprise the steps:
Step 1
Adjust image sensor 132
At first the travel mechanism 134 with electron product circuit signal position detecting system 20 of the present invention adjusts image sensor 132, image sensor 132 is aimed at probe 126 on perpendicular to objective table 120 directions, promptly is to make probe 126 be shown in the central point of the cross mark 144 of video display 138 screens 142 by picked image; At this moment, probe 126 ties up on the plane away from the position of objective table 120;
Step 2
Put thing to be detected
Then, as shown in Figure 4, to put for the thing to be detected of transparency carrier 121 or LCD 10 to be detected and be positioned on the objective table 120, make that the outer lead road district 118 that is not capped to be detected is the transparent workspace upper area that places objective table 120 on end points of transparency carrier 121 or the LCD 10, the transparent workspace that makes image sensor 132 can see through objective table 120 obtain the image in the outer lead to be detected road district 118 that is not capped on transparency carrier 121 tested end points or the LCD 10;
Step 3
Connect signal generator
To detect thing for waiing upon of transparency carrier 121 or LCD to be detected 10 and be connected, and utilize input signal driving that signal generator provides to wait upon the detection thing for transparency carrier 121 or LCD to be detected 10 with signal generator;
Step 4
Focusing
Utilize the autofocus mechanism of focusing device 136 or image sensor 132 to carry out focusing, make for the image definition of waiing upon tested end points that detects thing or the outer lead road district 118 that is not capped of transparency carrier 121 or LCD to be detected 10 be shown on the screen 142 of video display 138; Just as shown in Figure 4, on the screen 142 of video display 138, demonstrate the first outer lead road 146 and the second outer lead road 148 is not capped part;
Step 5
Adjust objective table 120
As shown in Figure 4, by being mounted on horizontal stroke between board 201 and the objective table 120 in mutually perpendicular direction, vertically moving structure 122,124 relative board 201 moving stages 120, so that place the tested end points of thing to be detected on the objective table 120 or the district 118, outer lead road that is not capped demonstrates the first outer lead road 146 on the screen 142 of video display 138 the image that is not capped part is shown in the center of the cross mark 144 of screen 142;
Step 6
Adjust probe 126
Driving probe 126 edges that are mounted on it by elevating mechanism 128 moves towards objective table 120 perpendicular to objective table 120 directions, to make probe 126 contact with the tested end points of thing to be detected or the outer lead road district 118 that is not capped, this moment is because probe 126 and the first outer lead road, 146 unmasked portions all are positioned position with cross mark 144 centrally aligneds of video display 138 screens 142 via image sensor 132, make probe 126 also aim at the first outer lead road, 146 unmasked portions perpendicular to objective table 120 directions, therefore, probe 126 can contact the first outer lead road, 146 unmasked portions directly and accurately; The last output signal that receives from the first outer lead road, 146 unmasked portions through probe 126 by tester 130 again.
Yet, detection for LCD 10 outer lead roads, usually need to detect a plurality of outer leads road, therefore the present invention also provides the method that detects a plurality of end points, promptly detect the first outer lead road 146 according to said method after, along probe 126 being removed from the first outer lead road, 146 unmasked portions perpendicular to objective table 120 directions; Moving stage 120 then, make the image of the second outer lead road, 148 unmasked portions be shown in cross mark 144 centers of video display 138 screens 142; Again probe 126 edges are moved towards objective table 120 perpendicular to objective table 120 directions, contact with the second outer lead road, 148 unmasked portions to make probe 126; The last output signal that receives from the second outer lead road, 148 unmasked portions through probe 126 by tester 130 again.So, detect on end points or the LCD outer lead road district that is not capped to be detected and then analogize in the same manner if there is third and fourth to wait upon.
Electron product circuit signal position detecting system 20 of the present invention and method thereof, because accurate detection and localization, be applicable to detect and arrange fine and close small again end points, therefore can be normally during show image in LCD 10, use and detect the relevant outer lead road that defect areas liquid crystal panel 100 is arranged, whether meet thereby detect, thereby judge liquid crystal panel 100 defectiveness or send winding bearing-type encapsulating structure 102 and wiring board 104 defectiveness that drive signal by the driving signal of winding bearing-type encapsulating structure 102 outputs and the signal of signal generator input.Just can keep in repair or eliminate with regard to defective part by above-mentioned judgement, make good part obtain to make full use of, reduce cost.
Claims (10)
1, a kind of electron product circuit signal position detecting system, it comprises probe, the objective table in order to carry thing to be detected, travel mechanism, image sensor and video display; It is characterized in that it also comprises on the objective table travel mechanism that uses moving stage, elevating mechanism, tester, the objective table is provided with a transparent workspace at least; Probe group and is positioned at objective table top on elevating mechanism, and is driven along moving perpendicular to the objective table direction by elevating mechanism; Tester is connected with probe, to receive thing output signal to be detected; Image sensor is installed in the travel mechanism, and is positioned at objective table below and relative with probe; Video display system is connected the image that obtains with the show image inductor with image sensor; Placing the object to be detected on the objective table is LCD, and it comprises that liquid crystal panel and at least one are embedded at liquid crystal panel winding bearing-type encapsulating structure on every side; Liquid crystal panel comprises the layer glass substrate and is formed with connection line in one of them; Connection line comprises and extends around the liquid crystal panel and plural outer lead road that at least a portion is not covered by winding bearing-type encapsulating structure.
2, electron product circuit signal position detecting system according to claim 1 is characterized in that described image sensor has autofocus mechanism.
3, electron product circuit signal position detecting system according to claim 1, it is characterized in that described image sensor has can be along the focusing device perpendicular to movable image inductor mobile mechanism on the objective table direction.
4, electron product circuit signal position detecting system according to claim 1, it is characterized in that described moving structure comprise the mobile mechanism on a large scale that has moving stage on a large scale respectively and among a small circle the small scope mobile mechanism of moving stage horizontal stroke, vertically move structure.
5, electron product circuit signal position detecting system according to claim 1 is characterized in that described video display comprises screen, aims at the cross mark that shows at video display for it when having the probe alignment image sensor on screen.
6, electron product circuit signal position detecting system according to claim 1 is characterized in that described tester is an oscillograph.
7, electron product circuit signal position detecting system according to claim 1 is characterized in that described image sensor can be the charge coupled cell video camera.
8, a kind of electron product circuit signal position finding and detection method is characterized in that it comprises:
Adjust image sensor
Adjust image sensor with the travel mechanism of electron product circuit signal position detecting system of the present invention, make itself and probe alignment, so that probe is shown in the central point of video display screen cross mark by picked image;
Put LCD
The LCD storing that will have the outer lead road district that is not capped is positioned in the upper area of the transparent workspace of objective table:
Connect signal generator
The outer lead road district that LCD is not capped is connected with signal generator, and the input signal that utilizes signal generator to provide drives LCD;
Focus on
Make the outer lead road district that LCD is not capped image definition be shown on the screen of video display;
Adjust objective table
By objective table travel mechanism moving stage, so that the image in the outer lead road district that LCD placed on it is not capped is shown in the center of the cross mark of screen;
Adjust probe
Drive the probe edge that is mounted on it by elevating mechanism and move towards objective table, contact with the outer lead road district that makes probe and LCD not be capped perpendicular to the objective table direction; Receive the output signal in the outer lead road district that is not capped from LCD through probe by tester.
9, electron product circuit signal position finding and detection method according to claim 8 is characterized in that described tester is an oscillograph.
10, electron product circuit signal position finding and detection method according to claim 8 is characterized in that described image sensor can be the charge coupled cell video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144715 CN1184486C (en) | 2001-12-21 | 2001-12-21 | Electron product circuit signal position detecting system and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144715 CN1184486C (en) | 2001-12-21 | 2001-12-21 | Electron product circuit signal position detecting system and its method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427265A CN1427265A (en) | 2003-07-02 |
| CN1184486C true CN1184486C (en) | 2005-01-12 |
Family
ID=4677793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144715 Expired - Fee Related CN1184486C (en) | 2001-12-21 | 2001-12-21 | Electron product circuit signal position detecting system and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1184486C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316255C (en) * | 2003-07-10 | 2007-05-16 | 宏达国际电子股份有限公司 | Testing system for electronic equipment |
| WO2005093441A1 (en) * | 2004-03-26 | 2005-10-06 | Quanta Display Inc. | Line defect testing-repairing device and method |
| CN100357752C (en) * | 2004-03-26 | 2007-12-26 | 广辉电子股份有限公司 | Line defect detection maintenance equipment and method |
| KR101269660B1 (en) * | 2006-10-09 | 2013-05-30 | 삼성디스플레이 주식회사 | Apparatus of testing panel and testing method using the same |
| TW201216391A (en) * | 2010-10-11 | 2012-04-16 | Ind Tech Res Inst | Detection method and detection device for LED chips on wafer and transparent probe card thereof |
| TWI416144B (en) * | 2011-05-06 | 2013-11-21 | Fu Lai Yao | The method and device for detecting the touch point of the substrate line with the probe |
| CN103018505A (en) * | 2012-12-04 | 2013-04-03 | 无锡圆方半导体测试有限公司 | Probe correcting device |
| CN104849610A (en) * | 2015-06-02 | 2015-08-19 | 深圳市极而峰工业设备有限公司 | Automatic circuit detection device |
-
2001
- 2001-12-21 CN CN 01144715 patent/CN1184486C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1427265A (en) | 2003-07-02 |
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