CN103558699A - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN103558699A CN103558699A CN201310559747.6A CN201310559747A CN103558699A CN 103558699 A CN103558699 A CN 103558699A CN 201310559747 A CN201310559747 A CN 201310559747A CN 103558699 A CN103558699 A CN 103558699A
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract 3
- 238000003475 lamination Methods 0.000 abstract 2
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 239000011521 glass Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The invention discloses a detection device and a detection method, wherein the detection device comprises a lower fixing unit, an upper fixing unit and a detection platform, the lower fixing unit is used for fixing a lower polarizer, the upper fixing unit is used for fixing an upper polarizer, the lower fixing unit and the upper fixing unit are mounted on the detection platform, a panel to be detected is arranged between the upper polarizer and the lower polarizer, and after lamination, the upper polarizer and/or the lower polarizer is in full contact with the panel to be detected. After the lower fixing unit and the upper fixing unit are utilized to respectively fix the lower polarizer and the upper polarizer and the upper polarizer and/or the lower polarizer is in full contact with the panel to be detected after lamination, foreign object defects existing on the surface to be detected are detected out on the panel to be detected between the upper polarizer and the lower polarizer before a signal is inputted, and after the signal is inputted, other defects, such as ununiform brightness, are then detected out. When the detection device is utilized, a large number of polarizers cannot be wasted in the process of detection, so that cost can be saved, and meanwhile, panels with foreign object defects or ununiform brightness can be detected out in time.
Description
Technical field
The present invention relates to display technique field, particularly a kind of checkout equipment and method.
Background technology
In the process of liquid crystal display device, because Pad regional space is limited, wiring interval surplus (Pad Pitch Margin) the industry design standards of small-size product is between 10～20um at present, and the size at the pad spacing edge of full contact (Full Contact) design need to be more than 20um, visible 10～20um pad spacing edge cannot meet the requirement of full contact design.In industry, many generally requirements reach FHD(Full High Definition at present, full HD) resolution standard is 1920*1080, take 10.1 inches with 32 inches be example, both have a long way to go at Pad district size, but the quantity of required wiring is consistent, therefore both corresponding line thicknesses etc. exist larger gap.Full contact is main uses the cabling contact of Blade YuPad district to reach the object that signal transmits, wherein Blade is a kind of high-precision blade, Pad is display screen signal access terminal, the signal that signal generator is produced is by a series of structure, finally by blade, access contacting of terminal with signal, import display screen, settling signal transmission.The alignment mode of full contact is optical registration, itself there is a certain amount of trueness error in this alignment mode, the cabling of 10.1 inches is thinner in addition, therefore easily there is the state of Blade and circuit disappearance, correct transmission of signal, 32 inches cabling is thicker, can comprise this error, so all adopt shorting bar pattern to detect to small-size product in industry at present, therefore generally use short-circuited terminal (Shorting Bar) to design into box detection in industry at present.But in short-circuited terminal method for designing, inevitably there is line resistance, becoming box detection-phase cannot avoid the signal attenuation coming due to line stopband, to occurring gray difference after product interpolation signal, causing and cannot correctly detect Mura badness (being that panel luminance is inhomogeneous).
Another aspect, for small-size product, due to high PPI(Pixels Per Inch in industry in recent years, the number of pixels of per inch) development trend, pixel (Pixel) is done less and less.According to the common way in current industry, becoming the box stage cannot effectively to be detected for foreign matter badness such as particulates, but need to after carrying out polarizer sheet sticking, backlight module could be detected, for existing the panel of foreign matter badness just to cause the polaroid wasting of resources, strengthened industry cost like this.
In sum, for undersized liquid crystal display product, to box detection-phase, Mura badness and foreign matter badness cannot detected in time, and in testing process, waste a large amount of polaroids.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is how in the situation that not wasting polaroid, and the Mura badness in time liquid crystal display product surface being existed and detection place of foreign matter badness come.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of checkout equipment, comprise: lower fixed cell, upper fixed cell and detection board, described lower fixed cell is for fixing lower polaroid, fixed unit is for fixing upper polaroid, described lower fixed cell and fixed cellular installation are on described detection board, and panel to be detected is placed between polaroid and lower polaroid, entirely contact after pressing between described upper polaroid and/or described lower polaroid and described panel to be detected.
Further, described lower fixed cell comprises fixed head and the first force fit plate, is provided with the first pickup groove on described fixed head, for described lower polaroid is installed, and on described the first force fit plate, be provided with view window, the position of described view window is corresponding with the position of described the first pickup groove.
Further, between described fixed head and described the first force fit plate, by hinging manner, connect.
Further, fixed unit comprises the second force fit plate, on described the second force fit plate, is provided with the second pickup groove, and for described upper polaroid is installed, and the position of described the second pickup groove is corresponding with the position of described view window and/or described the first pickup groove.
Further, fixed unit also comprises short-circuited terminal, and after described panel to be detected is placed between described the first force fit plate and described the second force fit plate, described short-circuited terminal is realized and entirely being contacted with described panel to be detected.
Further, the size of described upper polaroid and described lower polaroid is not less than the size of described view window, and the size of described view window is not less than the size of described panel to be detected.
Further, also comprise signal generator and signal controller, described signal generator for generation of and input signal, described signal controller produces different signals for controlling described signal generator.
Further, also comprise backlight and backlight controller, described backlight comprises the first backlight and the second backlight, the backlight that described the first backlight is used while inputting for no signal, the backlight of described the second backlight for there being signal when input to use, described backlight controller is according to whether there being the switching between the first backlight and described the second backlight described in signal input control.
For solving the problems of the technologies described above, the present invention also provides a kind of detection method based on above-mentioned checkout equipment, comprising:
Panel to be detected is placed between upper fixed cell and lower fixed cell;
By pressing, realizing polaroid and lower polaroid detects between panel and entirely contacts with described band;
Pass into different signals described panel to be detected is detected, according to testing result, detect into the bad substrate to be detected of box.
Further, described panel to be detected be placed between upper fixed cell and lower fixed cell and specifically comprised:
Lower polaroid is arranged in the first pickup groove of fixed head in lower fixed cell, the first force fit plate is folded to and on described fixed head, carries out pressing;
Panel to be detected is placed on described lower polaroid;
Upper polaroid is arranged in the second pickup groove of the second force fit plate in upper fixed cell, and carries out pressing.
Further, described lower polaroid, corresponding to the position of view window on the first force fit plate, after described the first force fit plate is folded on described fixed head, is observed by described view window in the position of described the first pickup groove.
Further, the position of described the second pickup groove with described in to obtain the position of view window and described the first pickup groove also corresponding.
Further, fixed unit also comprises short-circuited terminal, and after described panel to be detected is placed between described the first force fit plate and described the second force fit plate, described short-circuited terminal is realized and entirely being contacted with described panel to be detected.
Further, the size of described upper polaroid and described lower polaroid is not less than the size of described view window, and the size of described view window is not less than the size of described panel to be detected.
Further, under the control of described signal controller, described signal generator produces unlike signal, and treats and detect panel and detect by passing into different signals.
Further, the in the situation that of input signal not, open backlight, by described view window, detect the foreign matter badness of panel surface to be detected; After input signal, open backlight, by described view window, detect inhomogeneous bad of panel luminance to be detected.
(3) beneficial effect
A kind of checkout equipment and method that the embodiment of the present invention provides, wherein checkout equipment comprises: lower fixed cell, upper fixed cell and detection board, lower fixed cell is for fixing lower polaroid, upper fixed cell is for fixing upper polaroid, lower fixed cell and upper fixed cell are arranged on and detect on board, panel to be detected is placed between polaroid and lower polaroid, entirely contacts after pressing between upper polaroid and/or lower polaroid and panel to be detected.By lower fixed cell and upper fixed cell, fix respectively lower polaroid and upper polaroid, after pressing, realize full contact, to the panel to be detected in the middle of upper and lower polaroid, before passing into signal, check out the foreign matter badness existing on surface to be detected, pass into and reexamine out that other is bad after signal, as the problem of brightness irregularities.Utilize in this checkout equipment testing process and can not waste a large amount of polaroids, can save cost, will have foreign matter badness or exist the panel of brightness irregularities to detect in time simultaneously.Meanwhile, the present invention also provides a kind of detection method based on above-mentioned checkout equipment, and realization is treated detection panel and become the foreign matter badness of box stage existence and the problem of brightness irregularities to detect in time.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of checkout equipment of providing in the embodiment of the present invention one;
Fig. 2 is the lower fixed cell that provides in the embodiment of the present invention one structural representation under open mode;
Fig. 3 is the lower fixed cell that provides in the embodiment of the present invention one structural representation under stitching state;
Fig. 4 is the structural representation of the upper fixed cell that provides in the embodiment of the present invention one;
Fig. 5 is the flow chart of steps of a kind of detection method of providing in the embodiment of the present invention two;
Fig. 6 is the flow chart of steps of step S1 in the embodiment of the present invention two.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
At panel, becoming the detection that the box stage carries out it, is mainly to realize according to the wave characteristic of light.For completing the panel that attaches polaroid, by open backlight below panel, detect, because lower polaroid has had effect partially to incident light, liquid crystal molecule in panel has optical activity under voltage field effect, incident light changes the direction of propagation and spreads out of from upper polaroid after the optically-active effect of liquid crystal in panel, in human eye, form picture and carry out bad detecting, the foreign matter erroneous judgement impact that may exist only has the foreign matter on polaroid surface, so foreign matter badness can be detected, and can get rid of its impact by wiping.
But to box test phase, the general consideration based on cost does not detect after can not attaching polaroid on panel again, once defective because detect panel, the polaroid being attached on panel has just cancelled, and causes the waste of polaroid.So in the detection to box test phase, be generally manually by upper and lower polarizer sheet sticking on white glass, centre is put panel and is detected, but owing to having attached glass, cause polaroid to contact with panel, have a certain amount of gap, hour add that the transmittance that white glass causes declines like this in pixel, this gap of several centimetres can cause foreign matter badness and Mura badness.In addition, the molecule in the middle of the polaroid existing in attaching process and glass and the molecule between glass and panel, when final test and the foreign matter badness phenomenon of panel inside very similar, finally cause operator to differentiate, be difficult to detect.
Embodiment mono-
A kind of checkout equipment is provided in the embodiment of the present invention one, form schematic diagram as shown in Figure 1, specifically comprise: lower fixed cell 10, upper fixed cell 20 and detection board, lower fixed cell 10 is for fixing lower polaroid, upper fixed cell 20 is for fixing upper polaroid, lower fixed cell 10 and upper fixed cell 20 are arranged on and detect on board, and panel to be detected is placed between polaroid and lower polaroid, after pressing, between upper polaroid and/or lower polaroid and panel to be detected, entirely contact.
By above-mentioned checkout equipment, realize full contact the between polaroid and panel to be detected, before passing into signal and afterwards, by opening backlight, realize the clothing badness that existed by panel to be detected and the real-time detection of Mura badness.
Preferably, the structural representation of the lower fixed cell 10 in the present embodiment as shown in Figure 2, specifically comprise fixed head 11 and the first force fit plate 12, on fixed head 11, be provided with the first pickup groove 13, be used for installing lower polaroid, and on the first force fit plate 12, be provided with view window 14, the position of view window 14 is corresponding with the position of the first pickup groove 13.By view window, can see the lower polaroid of installing in the first pickup groove.
Further, between the fixed head in this enforcement 11 and the first force fit plate 12, by hinging manner, connect.Shown in Fig. 2 is the state of the first force fit plate while opening, and while being pressed on fixed head, schematic diagram as shown in Figure 3.After pressing box, can only see the first force fit plate and the lower polaroid of seeing by view window.
Preferably, the structural representation of the upper fixed cell 20 in this enforcement as shown in Figure 4, comprises on the second force fit plate 21, the second force fit plates 21 and is provided with the second pickup groove 22, be used for installing polaroid, and the position of the second pickup groove 22 is corresponding with the position of view window 14 and/or the first pickup groove 13.In addition, upper fixed cell 20 also comprises short-circuited terminal (not shown in Fig. 4), and after panel to be detected is placed between the first force fit plate 12 and the second force fit plate 21, short-circuited terminal is realized and entirely being contacted with panel to be detected.
It should be noted that, the upper polaroid in the present embodiment and the size of lower polaroid are not less than the size of view window, and the size of above-mentioned view window is not less than the size of panel to be detected.In addition, the size of upper and lower polaroid can not be greater than the size that detects board.
Further, the checkout equipment in the present embodiment also comprises signal generator and signal controller (not shown in figure 1), signal generator for generation of and input signal, signal controller produces different signals for control signal generator.
Further, checkout equipment in the present embodiment also comprises backlight and backlight controller (not shown in figure 1), backlight comprises the first backlight and the second backlight, the backlight that the first backlight is used while inputting for no signal, the backlight that the second backlight is used while being used for having signal input, whether backlight controller basis has the switching between signal input control the first backlight and the second backlight.
Signal controller in embodiment of the present invention checkout equipment, can control pattern generator input signal, under the state of five signal inputs, detects foreign matter badness and the Mura badness of ADS pattern.For super fringe field switching display technique ADS and the super long switching edge display technique HADS product of superelevation transmitance, attaching under the state of polaroid, if backlight is opened and plus signal not, namely open the first backlight, under normal condition due to plus signal not, liquid crystal molecule does not carry out deflection, and the light source of backlight cannot light-transmitting panel, and the state of observing by view window is for entirely black.If now panel inside has the operations such as the foreign matters such as molecule or orientation abnormal, can cause arranging of liquid crystal to occur abnormal, there is the sub-pix liquid crystal of arranging different from normal liquid crystal, under the state of plus signal not, also backlight light direction can be changed, what view window was observed is exactly that this pixel has shinny phenomenon, thereby carries out bad interception.It should be noted that, because liquid crystal molecule is arranged extremely sometimes also not obvious, generally that the brightness adjustment of backlight is obviously visible with top to normal twice, so need to use backlight controller to there being the backlight under the two states of signal and no signal to control, when adding signal, back light source brightness is not high, and its brightness is reduced while adding signal, carry out the inspection of other badness, in the present embodiment, take and check that Mura is bad and describe as example.
In sum, the checkout equipment by using embodiment mono-to provide, has the following advantages:
Without by polarizer sheet sticking on glass, can get rid of the impact of molecule between polaroid and glass;
2. polaroid is changed easily and is facilitated wiping;
3. owing to having removed the impact of white glass, higher transmittance can ensure, and polaroid can be close to panel surface, realizes contact entirely, make substantially can reach complete with polarizer sheet sticking after identical testing result.
Embodiment bis-
The embodiment of the present invention two provides a kind of detection method, and flow chart of steps as shown in Figure 5, specifically comprises the following steps:
Step S1, panel to be detected is placed between upper fixed cell and lower fixed cell.
Step S2, by pressing, realize polaroid and lower polaroid and detect between panel and entirely contact with band.
Step S3, pass into different signals and treat and detect panel and detect, according to testing result, detect into the bad substrate to be detected of box.
Based on said method, it is zero pressure box that upper polaroid and lower polaroid and the panel between the two are carried out to distance, reaches the effect of full contact, identical with the effect after polarizer sheet sticking completes.Owing to not having the real polarizer sheet sticking that completes in testing process, therefore do not cause the waste of polaroid, can also detect in time the foreign matter badness and the Mura badness that on panel, exist.
Preferably, in step S1, panel to be detected is placed on to flow chart of steps between upper fixed cell and lower fixed cell as shown in Figure 6, specifically comprises the following steps:
Step S11, lower polaroid is arranged in the first pickup groove of fixed head in lower fixed cell, the first force fit plate is folded to and on fixed head, carries out pressing.
Step S12, panel to be detected is placed on lower polaroid.
Step S13, upper polaroid is arranged in the second pickup groove of the second force fit plate in upper fixed cell, and carries out pressing.
Wherein, lower polaroid, corresponding to the position of view window on the first force fit plate, after the first force fit plate is folded on fixed head, is observed by view window in the position of the first pickup groove.And the position of the second pickup groove is also corresponding with the position that obtains view window and the first pickup groove.
Further, the upper fixed cell in the present embodiment, except the second force fit plate and the second pickup groove, also comprises short-circuited terminal, and after panel to be detected is placed between the first force fit plate and the second force fit plate, short-circuited terminal is realized and entirely being contacted with panel to be detected.
Preferably, the upper polaroid in the present embodiment and the size of lower polaroid are not less than the size of view window, and the size of view window is not less than the size of panel to be detected.
During detection, need to be under the control of signal controller, signal generator produces unlike signal, and treats and detect panel and detect by passing into different signals.The in the situation that of input signal not, open backlight, by view window, detect the foreign matter badness of panel surface to be detected; After input signal, open backlight, by view window, detect inhomogeneous bad of panel luminance to be detected.
Quick-reading flow sheets for said process is described below:
Lower polaroid is arranged on fixed head; By the first force fit plate upset, polaroid under pressing; Place panel to be detected; Place the second force fit plate and upper polaroid; Access different signals and detect (comprising the situation that any signal does not access).
In sum, the detection method that adopts the present embodiment to provide, can not waste under the prerequisite of a large amount of polaroids, upper polaroid and lower polaroid are carried out to pressing, realize full contact, whether the effect of simulation polarizer sheet sticking after completing, by backlight and add signal to realize the detection of counter plate, will there is foreign matter badness or exist the panel of brightness irregularities to detect in time.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (16)
1. a checkout equipment, it is characterized in that, comprise: lower fixed cell, upper fixed cell and detection board, described lower fixed cell is for fixing lower polaroid, fixed unit is for fixing upper polaroid, described lower fixed cell and fixed cellular installation are on described detection board, and panel to be detected is placed between polaroid and lower polaroid, entirely contact after pressing between described upper polaroid and/or described lower polaroid and described panel to be detected.
2. checkout equipment as claimed in claim 1, it is characterized in that, described lower fixed cell comprises fixed head and the first force fit plate, on described fixed head, be provided with the first pickup groove, be used for installing described lower polaroid, and on described the first force fit plate, be provided with view window, the position of described view window is corresponding with the position of described the first pickup groove.
3. checkout equipment as claimed in claim 2, is characterized in that, between described fixed head and described the first force fit plate, by hinging manner, connects.
4. checkout equipment as claimed in claim 2, it is characterized in that, fixed unit comprises the second force fit plate, on described the second force fit plate, be provided with the second pickup groove, be used for installing described upper polaroid, and the position of described the second pickup groove is corresponding with the position of described view window and/or described the first pickup groove.
5. checkout equipment as claimed in claim 4, it is characterized in that, fixed unit also comprises short-circuited terminal, and after described panel to be detected is placed between described the first force fit plate and described the second force fit plate, described short-circuited terminal is realized and entirely being contacted with described panel to be detected.
6. checkout equipment as claimed in claim 2, is characterized in that, the size of described upper polaroid and described lower polaroid is not less than the size of described view window, and the size of described view window is not less than the size of described panel to be detected.
7. the checkout equipment as described in any one in claim 1-6, it is characterized in that, also comprise signal generator and signal controller, described signal generator for generation of and input signal, described signal controller produces different signals for controlling described signal generator.
8. checkout equipment as claimed in claim 7, it is characterized in that, also comprise backlight and backlight controller, described backlight comprises the first backlight and the second backlight, the backlight that described the first backlight is used while inputting for no signal, the backlight of described the second backlight for there being signal when input to use, described backlight controller is according to whether there being the switching between the first backlight and described the second backlight described in signal input control.
9. a detection method for the checkout equipment based on described in claim 1-8, is characterized in that, comprising:
Panel to be detected is placed between upper fixed cell and lower fixed cell;
By pressing, realizing polaroid and lower polaroid detects between panel and entirely contacts with described band;
Pass into different signals described panel to be detected is detected, according to testing result, detect into the bad substrate to be detected of box.
10. detection method as claimed in claim 9, is characterized in that, described panel to be detected is placed between upper fixed cell and lower fixed cell and is specifically comprised:
Lower polaroid is arranged in the first pickup groove of fixed head in lower fixed cell, the first force fit plate is folded to and on described fixed head, carries out pressing;
Panel to be detected is placed on described lower polaroid;
Upper polaroid is arranged in the second pickup groove of the second force fit plate in upper fixed cell, and carries out pressing.
11. detection methods as claimed in claim 10, it is characterized in that, described lower polaroid, corresponding to the position of view window on the first force fit plate, after described the first force fit plate is folded on described fixed head, is observed by described view window in the position of described the first pickup groove.
12. detection methods as claimed in claim 11, is characterized in that, the position of described the second pickup groove with described in to obtain the position of view window and described the first pickup groove also corresponding.
13. detection methods as claimed in claim 9, it is characterized in that, fixed unit also comprises short-circuited terminal, and after described panel to be detected is placed between described the first force fit plate and described the second force fit plate, described short-circuited terminal is realized and entirely being contacted with described panel to be detected.
14. detection methods as claimed in claim 9, is characterized in that, the size of described upper polaroid and described lower polaroid is not less than the size of described view window, and the size of described view window is not less than the size of described panel to be detected.
15. detection methods as claimed in claim 13, is characterized in that, under the control of described signal controller, described signal generator produces unlike signal, and treat and detect panel and detect by passing into different signals.
16. detection methods as claimed in claim 11, is characterized in that, the in the situation that of input signal not, open backlight, detect the foreign matter badness of panel surface to be detected by described view window; After input signal, open backlight, by described view window, detect inhomogeneous bad of panel luminance to be detected.
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Cited By (7)
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| CN105116572A (en) * | 2015-09-18 | 2015-12-02 | 信利（惠州）智能显示有限公司 | Liquid crystal substrate detection device |
| CN105607310A (en) * | 2016-01-04 | 2016-05-25 | 京东方科技集团股份有限公司 | Panel detection device |
| CN106841990A (en) * | 2017-02-16 | 2017-06-13 | 京东方科技集团股份有限公司 | Display screen detection means |
| CN107036787A (en) * | 2017-04-14 | 2017-08-11 | 京东方科技集团股份有限公司 | Detection method and detecting system |
| CN110426873A (en) * | 2019-08-26 | 2019-11-08 | 深圳市全洲自动化设备有限公司 | A kind of LCD LCD panel test method |
| CN112730250A (en) * | 2020-12-29 | 2021-04-30 | 业成科技（成都）有限公司 | Detection jig and detection method |
| CN113567093A (en) * | 2021-09-26 | 2021-10-29 | 武汉精创电子技术有限公司 | Device and method for detecting product image quality |
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