CN104950489B - A kind of liquid crystal display detection method - Google Patents
A kind of liquid crystal display detection method Download PDFInfo
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- CN104950489B CN104950489B CN201510344263.9A CN201510344263A CN104950489B CN 104950489 B CN104950489 B CN 104950489B CN 201510344263 A CN201510344263 A CN 201510344263A CN 104950489 B CN104950489 B CN 104950489B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 22
- 102100023941 G-protein-signaling modulator 2 Human genes 0.000 claims abstract description 8
- 101000904754 Homo sapiens G-protein-signaling modulator 2 Proteins 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of liquid crystal display detection method, step includes: storage standard picture, and standard picture is at least two determined in preparatory experiment, in the full-screen image in inerrancy welding, the first screen image and the second screen image；The image definition that whole pins export is full-screen image, the image definition of only a part pin output is the first screen image, the image definition that only rest part pin exports is the second screen image；For liquid crystal display to be detected, image to be checked is obtained, image to be checked is at least two images corresponding with above-mentioned standard image；Image to be checked is compared with standard picture, if every kind of corresponding image shows identical, liquid crystal display welding mistake, otherwise, liquid crystal display has welding mistake.The present invention can accurate judgement liquid crystal display quality, and greatly promote detection efficiency.
Description
Technical field
The present invention relates to a kind of liquid crystal display detection methods.
Background technique
In ammeter assembling and ammeter automation line design process, meter circuit plate is inevitable during welding to be will appear
Rosin joint, solder skip connect phenomena such as tin, and this inevitable problem can make display when normally powering on display of our ammeter
Leakage is aobvious out, void is aobvious, disconnected aobvious or white screen state, influences ammeter total quality, LCD screen to next station in order not to circulate
It has checked into an essential process.
The method of liquid crystal display detection at present mainly includes artificial detection and machine detection two ways.
The domestic most of producer of ammeter industry all or using manually carries out visual detection to liquid crystal display state, and
It is whether disposable all displays of detection electric energy meter are normal when manually inspection LCD screen.Since ammeter produces
Amount is big, and the detection workload of liquid crystal display is quite big, and visual fatigue can be generated by, which working long hours, the problems such as missing inspection, false retrieval occurs, because
The efficiency and reliability of this manual inspection are obviously not so good as machine detection.
Machine detection generally requires and uses CCD technology, carries out Image Acquisition with CCD camera, to the image of acquisition with normally
In the case of full-screen image be compared.But due to and not all welding defect all can be in full frame middle embodiment, so this ratio
To that can not judge all problems, cause final detection result inaccurate.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal display detection methods, can not judge all ask to solve the prior art
Topic, leads to the problem of testing result inaccuracy.
To achieve the above object, the solution of the present invention includes:
A kind of liquid crystal display detection method, step include: storage standard picture, and standard picture is determined in preparatory experiment
, full-screen image in inerrancy welding, at least two in the first screen image and the second screen image；Whole pins are equal
The image definition of output is full-screen image, the image definition of only a part pin output is the first screen image, only rest part draws
The image definition of foot output is the second screen image；For liquid crystal display to be detected, image to be checked is obtained, image to be checked is and above-mentioned mark
Corresponding at least two image of quasi- image；Image to be checked is compared with standard picture, if every kind of corresponding image shows
Identical, then liquid crystal display welding mistake, otherwise, liquid crystal display has welding mistake.
Further, it when judgement has welding mistake, alarms.
Further, first screen image is even number screen image, and only even number pin exports；Second screen image is surprise
Number screen image, only odd number screen image exports.
Further, image and standard picture to be checked are obtained by CCD camera.
Further, detection of the liquid crystal display detection method for ammeter liquid crystal display is stated.
Due in the detection, not merely comparing full-screen image, and compare full-screen image, the first screen image, the second screen drawing
In at least two, therefore the present invention can accurate judgement with the presence or absence of welding mistake, not only accuracy of judgement but also judge speed
Fastly, detection efficiency can be greatly promoted.
Detailed description of the invention
Fig. 1 is CCD camera scheme of installation；
Fig. 2 is several situation schematic diagrams of full-screen image；
Fig. 3 is several situation schematic diagrams of odd number screen image；
Fig. 4 is several situation schematic diagrams of even number screen image.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
A kind of ammeter liquid crystal display detection method: including: storage standard picture, and standard picture is determined in preparatory experiment
, in inerrancy welding and full-screen image, the first screen image and the second screen image when various mis-welds at least
Two kinds；The image definition that whole pins export is full-screen image, the image definition of only a part pin output is the first screen figure
The image definition that picture, only rest part pin export is the second screen image.
For liquid crystal display to be detected, image to be checked is obtained, image to be checked is corresponding with above-mentioned standard image at least two
Image；Image to be checked is compared with standard picture, when every kind of image shows identical, the corresponding welding situation of standard picture
For the welding situation of liquid crystal display to be checked.
In the present embodiment, the first screen image is even number screen image, and only even number pin exports；Second screen image is odd number
Screen image, only odd number screen image exports.First screen image, the second screen image also can be used except odd even classification in addition to conduct its
His embodiment.
Specifically, it is necessary first to store full-screen image, even number screen image and the odd number screen image of welding mistake, solderless
Full-screen image, even number screen image and the odd number screen image of wrong accidentally constitute one group of standard picture.Such as the odd number screen in Fig. 2,3,4
(original), full frame (original), (original) the one group of standard picture for welding mistake of even number screen.Odd number screen (1,2 pins are connected),
Full frame (1,2 pins are connected), even number screen (1,2 pins are connected) are odd number screen, the full frame and even number screen figure when 1,2 pins are shorted
Picture.
Image to be checked is obtained, image to be checked is also the full-screen image to liquid crystal display to be checked, odd number screen image and even number screen figure
Image to be checked is compared picture with standard picture, i.e., by the full-screen image of image to be checked and the full-screen image of standard picture into
Row comparison, the odd number screen image of the odd number screen image of image to be checked and standard picture is compared, by the even number of image to be checked
The even number screen image of screen image and standard picture compares.If the display situation of various images is coincide, i.e., image to be checked
Full-screen image match with the full-screen image of standard picture, the odd number screen image of image to be checked and the odd number screen figure of standard picture
As matching, the even number screen image of image to be checked matches with the even number screen image of standard picture, then judges liquid crystal display welding
Mistake then judges that liquid crystal display has welding mistake conversely, there is any image to misfit.
Image acquisition mode are as follows: the optical information of measurand (ammeter liquid crystal display) is by optical system, in the photosurface of CCD
Optical imagery is formed in member, CCD device is converted into the optical information in photosensitive member the quantity of electric charge with intensity proportional.With certain frequency
The clock pulses of rate drives CCD, obtains the vision signal of measurand in CCD output end.Each in vision signal
It is strong and weak that the size of discrete voltage signal corresponds to the received light intensity of photosensitive member institute, and the timing of signal output then corresponds to CCD light
The sequence of quick member position.It, will after carrying out binaryzation or quantification treatment to the vision signal that CCD is exported by subsequent processing route
Measured target is separated from background, is prepared for further data processing and analysis.As shown in Figure 1, CCD camera 3 is pacified
In shield, right above ammeter liquid crystal display to be checked.CCD camera transfers information in control device, control dress
It sets and is alarmed, shown.
The process flow of CCD test:
1, control electric energy meter turns over screen.
It controls tooling and sends 645 agreements to electric energy meter, electric energy meter carries out turning over screen, return information after taking orders.
2, capture pictorial information.
After camera receives the information that electric energy meter is passed back, start to take pictures to liquid crystal display.
3, compare pictorial information.
The image of shooting is compared control device with the standard picture of storage.
4, export comparing result.
Export the information of comparison result.
5, terminal shows result.
According to comparison result, if it is determined that there is welding mistake, then directly alarmed by buzzer and LED light reaction.
Other type of alarms can certainly be used.
Method of the invention also can be used in the liquid crystal display of other instruments in addition to being used for ammeter liquid crystal display.
It is presented above that the present invention relates to specific embodiments, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are modified, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is to be finely adjusted to be formed to above-described embodiment, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (4)
1. a kind of liquid crystal display detection method, which is characterized in that step includes:
Standard picture is stored, standard picture is the first screen image determined in preparatory experiment, in inerrancy welding
With one of the second screen image and full-screen image；The image definition that whole pins export is full-screen image, only a part is drawn
The image definition of foot output is the first screen image, the image definition that only rest part pin exports is the second screen image；
For liquid crystal display to be detected, image to be checked is obtained, image to be checked is at least two images corresponding with above-mentioned standard image；
Image to be checked is compared with standard picture, it is no if every kind of corresponding image shows identical, liquid crystal display welding mistake
Then, liquid crystal display has welding mistake.
2. a kind of liquid crystal display detection method according to claim 1, which is characterized in that when judgement has welding mistake, carry out
Alarm.
3. a kind of liquid crystal display detection method according to claim 1 or 2, which is characterized in that first screen image is even
Number screen image, only even number pin exports；Second screen image is odd number screen image, and only odd number screen image exports.
4. a kind of liquid crystal display detection method according to claim 3, which is characterized in that the liquid crystal display detection method is used for
The detection of ammeter liquid crystal display.
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| CN201510344263.9A CN104950489B (en) | 2015-06-19 | 2015-06-19 | A kind of liquid crystal display detection method |
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| CN201510344263.9A CN104950489B (en) | 2015-06-19 | 2015-06-19 | A kind of liquid crystal display detection method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657954B (en) * | 2016-12-06 | 2018-09-11 | 海信集团有限公司 | A kind of DMD data faults detection method, equipment and system |
| CN107255874A (en) * | 2017-08-10 | 2017-10-17 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter liquid-crystal apparatus fault detection method and system |
| CN109302604A (en) * | 2018-10-24 | 2019-02-01 | 深圳市万屏时代科技有限公司 | A kind of display screen health monitoring system |
| CN110187534B (en) * | 2019-06-18 | 2022-07-08 | 深圳市全洲自动化设备有限公司 | Method and system for detecting pin deviation of LCD product through AOI test |
| CN113270057A (en) * | 2021-07-19 | 2021-08-17 | 杭州炬华科技股份有限公司 | Liquid crystal fault detection method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003069199A (en) * | 2001-08-30 | 2003-03-07 | Hitachi Electronics Eng Co Ltd | Method for detecting whether acf is pasted |
| JP3450801B2 (en) * | 2000-05-31 | 2003-09-29 | キヤノン株式会社 | Pupil position detecting device and method, viewpoint position detecting device and method, and stereoscopic image display system |
| CN1831600A (en) * | 2006-03-16 | 2006-09-13 | 友达光电股份有限公司 | Method for raising production good rate of liquid crystal panel, manufacturing method and used system |
| CN101556381A (en) * | 2008-04-10 | 2009-10-14 | 东捷科技股份有限公司 | Detection device and image illumination level compensation method |
| JP2011196685A (en) * | 2010-03-17 | 2011-10-06 | Sharp Corp | Defect detection device, defect repairing device, display panel, display device, defect detection method and program |
| CN103257465A (en) * | 2013-04-17 | 2013-08-21 | 合肥京东方光电科技有限公司 | Detecting device and method |
| CN103645573A (en) * | 2013-11-22 | 2014-03-19 | 大连日佳电子有限公司 | Liquid crystal display (LCD) detection method and system based on machine vision |
-
2015
- 2015-06-19 CN CN201510344263.9A patent/CN104950489B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3450801B2 (en) * | 2000-05-31 | 2003-09-29 | キヤノン株式会社 | Pupil position detecting device and method, viewpoint position detecting device and method, and stereoscopic image display system |
| JP2003069199A (en) * | 2001-08-30 | 2003-03-07 | Hitachi Electronics Eng Co Ltd | Method for detecting whether acf is pasted |
| CN1831600A (en) * | 2006-03-16 | 2006-09-13 | 友达光电股份有限公司 | Method for raising production good rate of liquid crystal panel, manufacturing method and used system |
| CN101556381A (en) * | 2008-04-10 | 2009-10-14 | 东捷科技股份有限公司 | Detection device and image illumination level compensation method |
| JP2011196685A (en) * | 2010-03-17 | 2011-10-06 | Sharp Corp | Defect detection device, defect repairing device, display panel, display device, defect detection method and program |
| CN103257465A (en) * | 2013-04-17 | 2013-08-21 | 合肥京东方光电科技有限公司 | Detecting device and method |
| CN103645573A (en) * | 2013-11-22 | 2014-03-19 | 大连日佳电子有限公司 | Liquid crystal display (LCD) detection method and system based on machine vision |
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