CN100405069C - Contactless detection device of display panel - Google Patents
Contactless detection device of display panel Download PDFInfo
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- CN100405069C CN100405069C CNB2006100757727A CN200610075772A CN100405069C CN 100405069 C CN100405069 C CN 100405069C CN B2006100757727 A CNB2006100757727 A CN B2006100757727A CN 200610075772 A CN200610075772 A CN 200610075772A CN 100405069 C CN100405069 C CN 100405069C
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Abstract
The present invention relates to a contactless detection device of a display panel, which comprises a plurality of signal input sensors, a plurality of signal detection sensors and a control circuit, wherein the signal input sensors are assembled in a first detection sliver, and the signal detection sensors are assembled in a second detection sliver. When the device is used for detecting a panel, the control circuit can be used for controlling the signal input sensors in the first detection sliver to provide detection signals and controlling the signal detection sensors in the second detection sliver to synchronously receive the detection signals in order to greatly shorten the testing time.
Description
Technical field
The invention relates to a kind of contactless detection device of display panel, refer to a kind of contactless detection device that is applicable to the gate/source distribution that detects thin-film transistor array base-plate especially.
Background technology
Fig. 1 shows the synoptic diagram of the panel 1 of a flat-panel screens.Have many horizontal lines 110 and multi-drop line 120 on display panel 1, wherein horizontal line 110 is called gate wirings (Gate Lines) again, and perpendicular line 120 is called source electrode distribution (Source Lines) again.Yet in the manufacture process of display panel 1, perpendicular line 110 on the display panel 1 or horizontal line 120 might break (Open) or the situation of short circuit (Short).Therefore, can detect the gate/source distribution usually.
The detection method of the panel of flat-panel screens mainly contains two kinds at present: contact detection method and non-contact detecting method.
Fig. 2 shows the synoptic diagram of known contact detection method.Known contact detection method is to utilize probe 21 to come display panel 22 is detected, and wherein have a plurality of probes 2111,2112,2113,2114,2115,2116 on the probe 21, and the quantity of described probe is fixed.When the horizontal line 221,222,223 of display panel 22 detected, the probe 2111,2112,2113,2114,2115,2116 of probe 21 was aimed at the both sides of described horizontal line 221,222,223 respectively.Also promptly, probe 2111,2112 is aimed at the both sides of horizontal line 221, and probe 2113,2114 is aimed at the both sides of horizontal line 222, and probe 2115,2116 is aimed at the both sides of horizontal line 223.Then, the probe 2111,2112 on the probe 21,2113,2114,2115,2116 with 221,222,223 contacts of described horizontal line, and probe 21 is at described horizontal line 221, potential difference (PD) is provided respectively between 222,223 both sides, goes out horizontal line 221 for probe 21 energy measurements, 222,223 resistance value.If when wherein the resistance measurement value of a horizontal line 222 exceeds gate wirings resistance value one setting range, then represent this horizontal line 222 to break.When if wherein the resistance value of a horizontal line 223 is close to zero, then represent this horizontal line 223 possibility short circuits.
Yet it is very consuming time to adopt probe to detect display panel.For example: the probe wherein number of probes of a side is 384, the resolution of display panel to be detected is 768 * 1024 (768 horizontal line * 1024 perpendicular line), then the probe on the probe must be aimed at the horizontal line on the display panel earlier, then the probe on the probe contacts with horizontal line on the display panel, and leaves display panel again in the detection probe that finishes afterwards.Because the number of probes of probe is 384, be that (768) half, so probe must detect twice to display panel just can finish horizontal line detection partly to the display panel horizontal line.So probe must repeat the horizontal detection that above-mentioned steps (aim at, contact, detect and leave) just can be finished display panel again, will be very consuming time so.
In addition, the number of probes of probe is fixed, and the resolution of display panel may have many kinds, so need very many probe to detect the display panel of different resolution, therefore can cause production cost to improve.For example: the probe wherein number of probes of a side is 384, the resolution of display panel to be detected may be 768 * 1024 (768 horizontal line * 1024 perpendicular line), various resolution such as 1088 * 612 or 1280 * 1024, so must prepare the probe of multiple different probe number, to detect the display panel of different resolution.
Fig. 3 a and Fig. 3 b show the synoptic diagram of known contactless detection device.In Fig. 3 a, be to utilize input pickup 31 and receiving sensor 32 to come wherein horizontal line 33 of display panel is detected, above-mentioned input pickup 31 can provide high voltage, so that horizontal line 33 is discharged voltage, can respond to and produce electric charge for horizontal line 33, make receiving sensor 32 can receive the induced charge that horizontal line 33 is produced.Therefore, receiving sensor 32 can be judged whether defectiveness of detected horizontal line 33 by receiving induced charge.
Fig. 3 b shows that known contactless detection device 30 detects the synoptic diagram of display panel 3, and the both sides of contactless detection device 30 are organized respectively and are provided with input pickup 31 and receiving sensor 32.Because non-contact detection device 30 adopts the induced charge mode to detect display panel 3, so the distance (Gap) of the probe of contactless detection device 30 and display panel 3 must be very little, for example: 100 microns (mm).In addition, can only detect a horizontal line (or perpendicular line) during contactless detection device 30 each detections, so contactless detection device 30 must adopt scan mode, for example: from top to bottom, display panel 3 is detected.Because contactless detection device 30 is very little with the spacing of display panel 3, when having the situation of particulate (Particle) on the display panel 3, contactless detection device 30 is drawn together easily when mobile on display panel 3 and is hindered display panel 3.
Therefore, how to provide a kind of pick-up unit of display panel to become the problem of needing solution badly.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of contactless detection device of display panel, so that can reduce detection time (Tact-Time), and increases the display panel production capacity effectively.
Another object of the present invention is to provide a kind of contactless detection device of display panel, so that can significantly reduce the checkout equipment cost.
A further object of the present invention is to provide a kind of contactless detection device of display panel, draws together the probability of hindering display panel so that can reduce when detecting panel.
According to a characteristic of the present invention, it is the contactless detection device that proposes a kind of display panel, in order to a display panel that includes many metal line is detected, the contactless detection device of display panel comprises: first detects rectangular, the rectangular and control circuit of second detection.Above-mentioned first detects rectangular group is provided with a plurality of signal input pickups.Above-mentioned second detects rectangular group is provided with a plurality of signal detection sensors, and described signal input pickup can be formed the detecting units of organizing with described signal detection sensor more.Above-mentioned control circuit electrically is connected with described signal input pickup and described signal detection sensor respectively.When contactless detection device detected display panel, the corresponding metal line of each group detecting unit energy was controlled at least one group of detecting unit for control circuit at least one metal wire is detected.
According to another characteristic of the present invention, it is the contactless detection device that proposes a kind of display panel, in order to a display panel that includes many metal line is detected, this contactless detection device comprises: first detects rectangular, signal detection sensor and control circuit.Above-mentioned first detects rectangular group is provided with a plurality of signal input pickups.Above-mentioned signal detection sensor can be formed a detecting unit with the signal input pickup.Above-mentioned control circuit electrically is connected with described signal input pickup and signal detection sensor respectively.When contactless detection device detects display panel, the corresponding metal wire of detecting unit energy, can metal wire be detected the control detection unit for control circuit, when desiring to make detecting unit to detect next metal line, the signal detection sensor can the mechanical type displacement, so that it can be corresponding with another signal input pickup and detects next metal line.
According to another characteristic of the present invention, it is the contactless detection device that proposes a kind of display panel, in order to a display panel that includes many metal line is detected, this contactless detection device comprises: signal input pickup, second detects rectangular and control circuit.Above-mentioned second detects rectangular group is provided with a plurality of signal detection sensors, and the signal input pickup can be formed a detecting unit with at least one signal detection sensor.Above-mentioned control circuit electrically is connected with signal input pickup and described signal detection sensor respectively.When contactless detection device detects display panel, the corresponding metal wire of detecting unit energy, for control circuit control detection unit metal wire is detected, and when detecting unit detects next metal line, the signal input pickup can the mechanical type displacement, so that it can be corresponding with at least one signal detection sensor and detects next metal line.
When above-mentioned control circuit detected metal wire in the control detection unit, the signal input pickup of control circuit control detection unit provided detection signal, and the synchronous detection signal of signal detection sensor of control circuit control detection unit.In another was implemented, control circuit can be controlled many group detecting units and come metal wire is detected.
In addition, the signal input pickup of control circuit control detection unit provides voltage, so that metal wire can produce induced charge, and the signal detection sensor of control circuit control detection unit detects metal wire by receiving induced charge.
Above-mentioned control circuit is that the control detection unit detects metal wire in order, to reach the electron scanning mode metal wire is detected, with can the acceleration detection time with avoid the scratch display panel.
Above-mentioned detecting unit can comprise a signal input pickup and a signal detection sensor, also can comprise a signal input pickup and a plurality of signal detection sensor.
Above-mentioned display panel to be detected can be an also uncut thin-film transistor array base-plate, perhaps is a thin-film transistor array base-plate through cutting.
Description of drawings
Fig. 1 is the synoptic diagram of the panel of a flat-panel screens.
Fig. 2 is the synoptic diagram of known contact detection method.
Fig. 3 a is the synoptic diagram of known non-contact detecting.
Fig. 3 b is the synoptic diagram that known non-contact detection device detects panel.
Fig. 4 is the functional block diagram of the contactless panel detection device of a preferred embodiment of the present invention.
Fig. 5 is the synoptic diagram that the contactless panel detection device of a preferred embodiment of the present invention detects panel.
Fig. 6 a, Fig. 6 b are the synoptic diagram of the present invention's second preferred embodiment.
Fig. 7 is the synoptic diagram of the present invention's the 3rd preferred embodiment.
Fig. 8 is the synoptic diagram of the present invention's the 4th preferred embodiment.
The primary clustering symbol description:
Horizontal line 110,221,222,223,33
Non-contact detection device 30
Receiving sensor 33
Metal wire 401,402,403,404,601
First detects rectangular 42,62,72
Second detects rectangular 43,63,83
Signal input pickup 421,422,423,621,721,722,821
Signal detection sensor 431,432,433,6311,6312,6313,731,831,832
Display unit 44
Embodiment
The present invention is mounted on first with a plurality of signal input pickups (Signal Input Sensor) to detect rectangular (Detecting Bar), with a plurality of signal detection sensors (Signal Detecting Sensor) be mounted on second detect rectangular, when display panel is detected, can be directly by first detect rectangular with second detect and rectangular metal wire on the display panel detected, wherein first detect each signal input pickup in rectangular and can aim at metal wire to be detected on the display panel, second each signal detection sensor that detects in rectangular also can detect the signal input pickup in rectangular and is positioned at the opposite side of the metal wire to be detected of display panel with respect to first.Therefore, when detecting display panel, as long as controlling described signal input pickup by the electronics mode provides detection signal, and control the synchronous detection signal of described signal detection sensor simultaneously and just can finish detection fast, significantly to reduce detection time.
First preferred embodiment of the contactless detection device of relevant display panel of the present invention, please in the lump with reference to Fig. 4 and Fig. 5, wherein Fig. 4 shows the functional block diagram of contactless detection device, Fig. 5 shows that contactless detection device detects the synoptic diagram of display panel.In Fig. 4, contactless detection device comprises control circuit 41, a plurality of signal input pickup 421,422,423 and a plurality of signal detection sensor 431,432,433.
Above-mentioned control circuit 41 electrically connects with described signal input pickup 421,422,423 and described signal detection sensor 431,432,433 respectively.
The preferred embodiment that contactless detection device detects display panel is to be example with the horizontal line 401,402,403 that detects display panel 40 as shown in Figure 5.Described signal input pickup 421,422,423 is mounted on first and detects in rectangular 42, and described signal detection sensor 431,432,433 is mounted on second and detects in rectangular 43.In the present embodiment, the display panel 40 that contactless detection device detected can be uncut thin-film transistor array base-plate.In other embodiments, display panel 40 to be detected also can be the thin-film transistor array base-plate that process is cut.
In addition, each signal input pickup 421,422,423 can aim at each metal line 401 of display panel 40 respectively, 402, a side of 403, each signal detection sensor 431,432,433 can aim at the opposite side of each metal line 401,402,403 of display panel 40 respectively, and above-mentioned signal input pickup 421 can be formed one group of detecting unit with signal detection sensor 431, so that the detection signal that signal input pickup 421 is provided can be received by signal detection sensor 431.Similar ground, signal input pickup 422 can be formed one group of detecting unit with signal detection sensor 432, and signal input pickup 423 can be formed one group of detecting unit with signal detection sensor 433.So first detects the rectangular 42 and second described signal input pickup 421,422,423 that detects in rectangular 43 can form many group detecting units with described signal detection sensor 431,432,433.
When detecting, control circuit 41 can once be controlled one group of detecting unit and come the wherein metal line 401,402 on the display panel 40, and 403 detect.For example: 421 pairs of metal wires 401 of control circuit 41 control signal input pickups provide voltage, so that metal wire 401 produces induced charge, whether and the signal detection sensor 431 that belongs to same group of detecting unit with signal input pickup 421 can receive the induced charge that metal wire 401 is produced, break or short circuit to judge this metal wire 401.
Then, control circuit 41 Sustainable Control signal input pickups 422 provide the detecting voltage signal, so that signal detection sensor 432 can be detected the induced charge that metal wire 402 is produced.So, control circuit 41 is control signal input pickup 421 in regular turn, 422,423 provide detection signal, and control signal detection sensor 431,432,433 receive synchronously detection signals, utilize the electron scanning mode to come described metal wire 401,402 on the counter plate 40 reaching, 403 detect, and draw together the probability of hindering display panel 40 with reduction detection time with significantly.
In other embodiments, for the acceleration detection time, control circuit 410 can once be controlled the metal wire 401,402 of many group detecting units to display panel 40, and 403 detect.Also be, control circuit 410 can be controlled the signal input pickup 421 of odd number simultaneously, 423 come metal wire 401,403 supply voltages are so that metal wire 401,403 produces induced charge, control circuit 410 is also controlled the signal detection sensor 431 of odd number simultaneously, 433 receive induced charge, to detect metal wire 401,403.Afterwards, control circuit 410 can be controlled the signal input pickup 422 of even number and the signal detection sensor 432 of even number comes the metal wire 402 of dual numbers to detect, significantly to reduce detection time.
Fig. 6 a and Fig. 6 b show the synoptic diagram of the present invention's second preferred embodiment.In Fig. 6 a, first detection rectangular 62 includes a plurality of signal input pickups 621, the second detections rectangular 63 and includes a plurality of signal detection sensors 6311,6312,6313, wherein signal input pickup 621 and described signal detection sensor 6311,6312,6313 form a detecting unit.
Because in the present embodiment, detecting unit includes a signal input pickup 621 and three signal detection sensors 6311,6312,6313, therefore when the metal wire 601 of 621 pairs of display panels 60 of signal input pickup provides voltage, metal wire 601 can produce induced charge, and described signal detection sensor 6311,6312,6313 can receive the induced charge that metal wire 601 is produced, so can increase the accuracy of measurement result, and increase the signal intensity and the unnecessary noise of filtration that receives effectively.
Fig. 6 b shows the synoptic diagram of a plurality of signal detection sensors of this enforcement employing.A1 is the waveform of the signal that received of a signal detection sensor, A2 is the waveform of the signal that received of three signal detection sensors, hence one can see that, utilize a plurality of signal detection sensors to receive a signal simultaneously, can make waveform tool additivity, so when detecting display panel, can increase the accuracy of measurement result.
Fig. 7 shows the synoptic diagram of the present invention's the 3rd preferred embodiment, in some is implemented, can utilize the rectangular 72 and signal detection sensors 731 of first detection to detect display panel 70, wherein first detection rectangular 72 includes a plurality of signal input pickups 721,722.So control circuit can be controlled first and detect rectangular 72 input pickup 721,722 detection signal is provided in regular turn, and control signal detection sensor 731 mechanical types move and receive detection signal.
Fig. 8 shows the synoptic diagram of the present invention's the 4th preferred embodiment, also can utilize signal input pickup 821 and second to detect rectangular 83 and detect panel 80, and wherein second detection rectangular 83 includes a plurality of signal detection sensors 831,832.So, control circuit can the control signal input pickup 821 machineries move providing detection signal at diverse location, and control second and detect rectangular 83 signal detection sensor 831,832 and receive detection signal in regular turn.
By above explanation as can be known, it is rectangular that the present invention utilizes a plurality of signal input pickups to form first detection, and utilize a plurality of signal detection sensors form second detect rectangular, for directly utilize first detect rectangular with second detect and rectangular display panel detected.In addition, control circuit is also controlled first and is detected rectangular signal input pickup detection signal is provided in regular turn, and controls second and detect rectangular signal detection sensor and receive detection signal synchronously, to reach the electronic type scanning panel, reducing detection time, and increase the display panel production capacity effectively.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described, but not only limits to the foregoing description.
Claims (20)
1. the contactless detection device of a display panel, is characterized in that this contactless detection device comprises in order to a display panel that includes many metal line is detected:
One first detection is rectangular, and group is provided with a plurality of signal input pickups;
One second detection is rectangular, and group is provided with a plurality of signal detection sensors, and described signal input pickup and described signal detection sensor are formed many group detecting units; And
One control circuit electrically is connected with described signal input pickup and described signal detection sensor respectively,
When this contactless detection device detected described display panel, the corresponding metal line of each group detecting unit was controlled at least one group of detecting unit for described control circuit at least one metal wire is detected.
2. contactless detection device as claimed in claim 1, it is characterized in that, the signal input pickup that described control circuit is controlled at least one group of detecting unit provides detection signal, and described control circuit is controlled the synchronous detection signal of signal detection sensor of this at least one group of detecting unit.
3. contactless detection device as claimed in claim 1, it is characterized in that, the signal input pickup that described control circuit is controlled at least one group of detecting unit provides voltage, so that at least one metal wire produces induced charge, and described control circuit is controlled the signal detection sensor of this at least one group of detecting unit, detects described at least one metal wire by receiving induced charge.
4. contactless detection device as claimed in claim 1 is characterized in that, described control circuit is controlled described at least one group of detecting unit in regular turn described at least one metal wire is detected.
5. contactless detection device as claimed in claim 1 is characterized in that, each detecting unit comprises a signal input pickup and a signal detection sensor.
6. contactless detection device as claimed in claim 1 is characterized in that, each detecting unit comprises a signal input pickup and a plurality of signal detection sensor.
7. contactless detection device as claimed in claim 1 is characterized in that, described display panel is uncut thin-film transistor array base-plate.
8. contactless detection device as claimed in claim 1 is characterized in that, described display panel is the thin-film transistor array base-plate through cutting.
9. contactless detection device, is characterized in that this contactless detection device comprises in order to a display panel that includes many metal line is detected:
One first detection is rectangular, and group is provided with a plurality of signal input pickups;
One signal detection sensor can be formed a detecting unit with a signal input pickup; And
One control circuit electrically is connected with described signal input pickup and described signal detection sensor respectively,
When this contactless detection device detects described display panel, the corresponding metal line of described detecting unit energy, controlling this detecting unit for this control circuit detects this metal wire, and when this detecting unit detects next metal line, described signal detection sensor can displacement, so that it is corresponding with another signal input pickup energy and detect next metal line.
10. contactless detection device as claimed in claim 9, it is characterized in that, the described signal input pickup that described control circuit is controlled described detecting unit provides detection signal, and this control circuit is controlled the synchronous detection signal of signal detection sensor of this detecting unit.
11. contactless detection device as claimed in claim 9, it is characterized in that, the described signal input pickup that described control circuit is controlled described detecting unit provides voltage, so that described metal wire produces induced charge, and this control circuit is controlled the signal detection sensor of this detecting unit, detects described metal wire by receiving induced charge.
12. contactless detection device as claimed in claim 9 is characterized in that, described control circuit is controlled described signal input pickup in regular turn detection signal is provided, and controls the displacement of described signal detection sensor with synchronous detection signal.
13. a contactless detection device, is characterized in that this contactless detection device comprises in order to a display panel that includes many metal line is detected:
One signal input pickup;
One second detection is rectangular, and group is provided with a plurality of signal detection sensors, and described signal input pickup can be formed a detecting unit with at least one signal detection sensor; And
One control circuit electrically is connected with described signal input pickup and described signal detection sensor respectively,
When this contactless detection device detects described display panel, the corresponding metal line of described detecting unit energy, controlling this detecting unit for described control circuit detects this metal wire, and when this detecting unit detects next metal line, described signal input pickup can displacement, so that it is corresponding with another at least one signal detection sensor energy and detect next metal line.
14. contactless detection device as claimed in claim 13, it is characterized in that, the signal input pickup that described control circuit is controlled described detecting unit provides detection signal, and this control circuit is controlled the synchronous detection signal of at least one signal detection sensor of described detecting unit.
15. contactless detection device as claimed in claim 13, it is characterized in that, the signal input pickup that described control circuit is controlled described detecting unit provides voltage, so that described metal wire produces induced charge, and this control circuit is controlled at least one signal detection sensor of described detecting unit, detects described at least one metal wire by receiving induced charge.
16. contactless detection device as claimed in claim 13, it is characterized in that, described control circuit is controlled the described signal input pickup of displacement in regular turn, to aim at described metal wire, and detection signal is provided, and this control circuit and control at least one signal detection sensor synchronous detection signal in regular turn.
17. contactless detection device as claimed in claim 13 is characterized in that, described detecting unit comprises a signal input pickup and a signal detection sensor.
18. contactless detection device as claimed in claim 13 is characterized in that, described detecting unit comprises a signal input pickup and a plurality of signal detection sensor.
19. contactless detection device as claimed in claim 13 is characterized in that, described display panel is uncut thin-film transistor array base-plate.
20. contactless detection device as claimed in claim 13 is characterized in that, described display panel is the thin-film transistor array base-plate through cutting.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100757727A CN100405069C (en) | 2006-04-26 | 2006-04-26 | Contactless detection device of display panel |
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| CNB2006100757727A CN100405069C (en) | 2006-04-26 | 2006-04-26 | Contactless detection device of display panel |
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| CN1831550A CN1831550A (en) | 2006-09-13 |
| CN100405069C true CN100405069C (en) | 2008-07-23 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI478018B (en) * | 2011-01-21 | 2015-03-21 | Egalax Empia Technology Inc | Method and device for inspecting the strips of a touch panel |
| CN103728515B (en) * | 2013-12-31 | 2017-01-18 | 深圳市华星光电技术有限公司 | Device and method for detecting circuit of array substrate with wires densely arranged |
| CN104299549B (en) * | 2014-11-12 | 2017-04-05 | 昆山国显光电有限公司 | Alignment device and its method are surveyed in screen health check-up |
| CN105185283B (en) * | 2015-10-23 | 2017-12-08 | 京东方科技集团股份有限公司 | Detection means, frame substrate, the method for detection frame substrate upper substrate position |
| CN105609022B (en) * | 2015-12-30 | 2018-08-14 | 昆山工研院新型平板显示技术中心有限公司 | GIP detection circuits and panel display apparatus |
| CN105869554B (en) * | 2016-06-17 | 2019-01-22 | 京东方科技集团股份有限公司 | Detection circuit, the recognition methods of structure feature and display base plate |
| TWI634339B (en) * | 2017-11-21 | 2018-09-01 | 興城科技股份有限公司 | Method and apparatus for testing a tft panel |
| CN108226759B (en) * | 2018-03-15 | 2020-03-06 | 京东方科技集团股份有限公司 | Line fault detection method and device for non-display area of display panel |
| CN109727562B (en) * | 2019-01-25 | 2022-05-06 | 南京京东方显示技术有限公司 | Panel detection device and detection method |
| CN110672948B (en) | 2019-09-29 | 2021-04-20 | 云谷（固安）科技有限公司 | Touch panel detection equipment and system |
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| JPH1026647A (en) * | 1996-07-11 | 1998-01-27 | Okano Hightech Kk | Method and device for inspecting substrate |
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| JPH1026647A (en) * | 1996-07-11 | 1998-01-27 | Okano Hightech Kk | Method and device for inspecting substrate |
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| 特开2003-90855 2003.03.28 |
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