CN201281691Y - LCD panel foreign matter detecting system - Google Patents
LCD panel foreign matter detecting system Download PDFInfo
- Publication number
- CN201281691Y CN201281691Y CNU2008201526550U CN200820152655U CN201281691Y CN 201281691 Y CN201281691 Y CN 201281691Y CN U2008201526550 U CNU2008201526550 U CN U2008201526550U CN 200820152655 U CN200820152655 U CN 200820152655U CN 201281691 Y CN201281691 Y CN 201281691Y
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- lcd panel
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- 238000003384 imaging method Methods 0.000 claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000005286 illumination Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract 2
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- 239000000758 substrate Substances 0.000 description 4
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- 238000004519 manufacturing process Methods 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
A foreign matter detection system for an LCD panel comprises the LCD panel to be detected, a CCD lens, a coaxial light source, an image acquisition mechanism, an imaging analysis mechanism, a control mechanism and an I/O module. The coaxial light source and the CCD lens are positioned on the same axis and provide illumination for the system; the CCD lens is used for acquiring a simulation image of the LCD panel to be tested; the image acquisition mechanism is used for converting the simulation signal acquired by the CCD lens into a digital signal and is connected with the imaging analysis mechanism through an I/O module; the control mechanism is used for controlling various parameters related to the detection system, such as detection precision and the like, and is connected with the system through the I/O module. The system introduces the CCD system to detect the foreign matters before the polarizing plate attaching process, thereby not only liberating human resources and reducing the cost, but also improving the detection accuracy and ensuring the quality of liquid crystal panel products.
Description
Technical field
The utility model relates to a kind of detection system, relates in particular to a kind of detection system of the LCD panel foreign matter before Polarizer attaches processing procedure.
Background technology
The LCD panel comprises liquid crystal layer, go up lower glass substrate and Polarizer up and down, and wherein liquid crystal layer places between the lower glass substrate, and Polarizer places outside the lower glass substrate respectively again up and down.Being crisscross arranged of Polarizer can make light source produce phasic difference when electric field and no electric field are arranged and present the state of light and shade up and down, in order to demonstration captions or pattern.Therefore, before carrying out Polarizer attaching processing procedure, need check the foreign matters such as small chips of glass of face glass surface attachment.At present a lot of producers mainly are to carry out hand inspection by the production operation personnel for the small foreign matter of glass baseplate surface, find foreign matter with this.But this method is subjected to artificial factor bigger, is easy to because staff's carelessness causes some small foreign body not to be detected, thereby influences the quality of LCD panel.Simultaneously, this classic method has also increased the human cost of producing.
China Patent No. is that 200410027909.2 patent of invention discloses a kind of LCD Panel detection system and method.As shown in Figure 1, it is the system architecture figure of this LCD Panel detection system, and this LCD Panel detection system comprises a tested LCD Panel10, a zoom microscope 11, a CCD (Charge CoupledDevice) video camera 12, an image pick-up card 13 and a computing machine 14.This zoom microscope 11 is used to amplify the picture image of tested LCD Panel.This ccd video camera 12 is used to gather the image on the zoom microscope.This image pick-up card 13 is used for the image that ccd video camera 12 just collects and is converted to digital signal by simulate signal.This computing machine 14 comprises CPU (central processing unit), stored memory, is used to store the digital signal after the conversion, obtains between the color template region of the circumstances in which people get things ready for a trip of going forward side by side, the image rotation processing, covers up operations such as a sign indicating number coding, analysis, thereby detect the bad point on the LCD Panel.But above-mentioned LCD Panel detection system just go bad a little inspection for LCDPanel, is not detected for the foreign matter on the glass substrate before the Polarizer attaching processing procedure, so also fail to solve defective in the conventional art.
The utility model content
At above-mentioned defective, the purpose of this utility model is to propose a kind of LCD panel foreign matter detection system, influenced by human factor excessive to solve in traditional liquid crystal manufacturing technology before Polarizer attaches processing procedure detection to LCD panel foreign matter, can not well ensure the quality of products and defect of high cost.
The utility model proposes a kind of LCD panel foreign matter detection system, it is characterized in that, comprise some CCD camera lenses in order to images acquired, provide illumination light source mechanism, in order to image by simulate signal be converted into the image acquisition mechanism of digital signal, in order to realize I/O module, imaging analysis mechanism and the mounting bracket of digital signal input and output, described some CCD camera lenses are arranged on the described mounting bracket, described CCD camera lens and described image acquisition mechanism link, and described image acquisition mechanism and described imaging analysis mechanism link by the I/O module.
According to the described LCD panel of the utility model preferred embodiment foreign matter detection system, its light source mechanism is a coaxial light source, and itself and described CCD camera lens and are set on the described CCD camera lens on same axle.
According to the described LCD panel of the utility model preferred embodiment foreign matter detection system, the camera lens in the linear scanning system of its CCD camera lens employing DALSA (Dare Sa).
According to the described LCD panel of the utility model preferred embodiment foreign matter detection system, also comprise one in order to adjust the control gear of detected parameters
The utility model detects the CCD system applies to LCD panel foreign matter, not only liberated human resources, has reduced cost, and has improved the degree of accuracy that detects, and has guaranteed the quality of liquid crystal panel product.
Description of drawings
Fig. 1 is the system architecture figure of existing a kind of LCD Panel detection system;
Fig. 2 is the schematic diagram of a kind of LCD panel of the utility model foreign matter detection system;
Fig. 3 is the system architecture figure of a kind of LCD panel of the utility model foreign matter detection system;
Fig. 4 is the structural drawing of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, specify the utility model.
Core of the present utility model is: in the liquid crystal manufacture process, especially before Polarizer attaches processing procedure, introduced the CCD system of prior art, LCD panel surface foreign matter is detected, thereby substituted the operation of traditional manual detection foreign matter.
See also Fig. 2, it is the schematic diagram of a kind of LCD panel of the utility model foreign matter detection system.Coaxial light source 2 is used to this system that illumination is provided, and it is set on the CCD camera lens 1, and is on the same axis with CCD camera lens 1, evidence, and this coaxial light source is better than backlight illumination for the effect that detects foreign matter.If have foreign matter 4 on the tested LCD panel 3, the effect of its reflection source can form strong and weak difference, and the CCD system can calculate the gray difference that reflection produces, and catches and imaging according to the value of setting, thereby reaches the purpose that detects foreign matter.
See also Fig. 3, it is the system architecture figure of a kind of LCD panel of the utility model foreign matter detection system.As seen from the figure, coaxial light source mechanism links to each other with the CCD camera lens, and both are on the same axis; The CCD camera lens is used to obtain the emulating image of tested LCD panel, and its inside is provided with optical lens carries out photoelectricity coupled CCD photoelectric sensor; Image acquisition mechanism then is used for the simulate signal that the CCD camera lens obtains is converted into digital signal, and its inside mainly is to be made of the A/D conversion module, links by the I/O module between it and the imaging analysis mechanism; Imaging analysis mechanism handles the digitized view data that obtains and analyze, and gives the imaging demonstration; Control gear is in order to control various parameters relevant with this detection system, and as accuracy of detection etc., it links with this system by the I/O module.
See also Fig. 4, it is a preferred embodiment of the present utility model.This embodiment has increased the support of CCD detection system and fixation of C CD system on existing equipment, it has comprised transmission microscope carrier 8, support 6, fixed body 7, CCD camera lens 1 and coaxial light source 2.Transmit microscope carrier 8 and be and be responsible for the transportation work that Polarizer attaches LCD panel before the processing procedure, it is made up of a series of rollers side by side.Metals such as support 6 employing stainless steels are made, and it constitutes by the metal support plate that is erected at transmission microscope carrier 8 both sides with across the number of metal bar between support plate.Support 6 is arranged on and transmits microscope carrier 8 tops, and the position must select suitably, utilizes support 6 the CCD system to be installed in directly over the LCD panel that will detect, and assurance LCD panel can both arrive CCD at every turn and detect in the scope.The CCD system is arranged between the support 6 by fixed body 7, specifically, is to utilize nut etc. that the Metallic rod of 6 on fixed body 7 and support is fixed.It is adjustable that Metallic rod between support can be arranged to upper-lower position, thus the CCD system can not only be on Metallic rod left and right adjusting, simultaneously also can up-down adjustment.CCD camera lens 1 is arranged on the low side of fixed body 7, and over against mobile microscope carrier 8, its outer cover is provided with coaxial light source 2, and both are on the same axis.
The CCD system of present embodiment has adopted the linear scanning system of DALSA (Dare Sa), this system has comprised image acquisition mechanism, imaging analysis mechanism, control gear and I/O module, these four parts can be incorporate, link to each other with photoelectric sensor in the CCD camera lens by transmission line.Certainly, present embodiment also can adopt the sector scanning system of COGNEX (Cognex), but through test, for dynamic, the small object that detects, because line sweep system is with by the imaging of line sweep mode, with respect to the simple regional exposure imaging of sector scanning system, better effects if is caught in imaging.So the small foreign matter of scanning of a surface, linear scanning system is better than the sector scanning system, so the preferred version of present embodiment is to adopt the linear scanning system of DALSA (Dare Sa).
Before this LCD panel foreign matter detection system comes into operation, need carry out a series of debugging to it, as:
1) owing to check the difference of target call, promptly checks the difference of object particle volume, can select the quantity of CCD camera lens and the multiplying power of amplification as requested.
2) distance between CCD camera lens and the LCD panel is adjusted, adjusted focal length, light source power.
3),, adjust the shutter film speed according to the influence factors such as flowing velocity of object to the dynamic chek object.
4) according to the color of detected material, shape and to reflection of light etc., also to wait to determine the accuracy of detection value according to the influence of working environment light, such as 200um.
Above-mentioned detected parameters can be adjusted control by control gear.
In addition, the utility model except as above-mentioned embodiment improving on the existing equipment, the equipment of can also independently making uses.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, any those skilled in the art can think variation, all should drop in the protection domain of the present utility model.
Claims (4)
1, a kind of LCD panel foreign matter detection system, it is characterized in that, comprise some CCD camera lenses in order to images acquired, provide illumination light source mechanism, in order to image by simulate signal be converted into the image acquisition mechanism of digital signal, in order to realize I/O module, imaging analysis mechanism and the mounting bracket of digital signal input and output, described some CCD camera lenses are arranged on the described mounting bracket, described some CCD camera lenses and described image acquisition mechanism link, and described image acquisition mechanism and described imaging analysis mechanism link by the I/O module.
2, LCD panel foreign matter detection system as claimed in claim 1 is characterized in that, described light source mechanism is a coaxial light source, and itself and described CCD camera lens and are set on the described CCD camera lens on same axle.
3, LCD panel foreign matter detection system as claimed in claim 1 is characterized in that, the camera lens in the linear scanning system of described CCD camera lens employing Dare Sa.
As claim 1,2 or 3 described LCD panel foreign matter detection systems, it is characterized in that 4, also comprise one in order to adjust the control gear of detected parameters, described control gear links by described I/O module and this LCD panel foreign matter detection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201526550U CN201281691Y (en) | 2008-09-03 | 2008-09-03 | LCD panel foreign matter detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201526550U CN201281691Y (en) | 2008-09-03 | 2008-09-03 | LCD panel foreign matter detecting system |
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| CN201281691Y true CN201281691Y (en) | 2009-07-29 |
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| CNU2008201526550U Expired - Fee Related CN201281691Y (en) | 2008-09-03 | 2008-09-03 | LCD panel foreign matter detecting system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621149A (en) * | 2012-03-21 | 2012-08-01 | 深圳市华星光电技术有限公司 | Substrate detection device and method |
| CN103076345A (en) * | 2013-01-16 | 2013-05-01 | 东莞市三姆森光电科技有限公司 | A detection method of ITO conductive glass and its automatic optical detection system |
| CN103440654A (en) * | 2013-08-27 | 2013-12-11 | 南京大学 | LCD foreign body defect detection method |
| CN104316541A (en) * | 2014-11-12 | 2015-01-28 | 京东方科技集团股份有限公司 | Defect detection device and polaroid attaching equipment |
| CN104808213A (en) * | 2015-05-11 | 2015-07-29 | 合肥京东方光电科技有限公司 | Foreign matter detecting device and coating system |
| CN105388642A (en) * | 2015-11-14 | 2016-03-09 | 合肥骇虫信息科技有限公司 | Liquid crystal display panel foreign matter detection system |
| CN106773160A (en) * | 2016-12-15 | 2017-05-31 | 东旭科技集团有限公司 | The hand inspection servicing unit of glass substrate, inspection system and its inspection method |
| CN106842650A (en) * | 2017-04-10 | 2017-06-13 | 京东方科技集团股份有限公司 | The processing unit of display base plate foreign matter, the processing method of display base plate foreign matter |
| CN110018178A (en) * | 2019-04-28 | 2019-07-16 | 华南理工大学 | A kind of mobile phone bend glass typical defect on-line measuring device and method |
| CN111709921A (en) * | 2020-06-02 | 2020-09-25 | Oppo（重庆）智能科技有限公司 | Detection method, detection device, electronic device and computer readable storage medium |
-
2008
- 2008-09-03 CN CNU2008201526550U patent/CN201281691Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621149B (en) * | 2012-03-21 | 2015-07-22 | 深圳市华星光电技术有限公司 | Substrate detection device and method |
| CN102621149A (en) * | 2012-03-21 | 2012-08-01 | 深圳市华星光电技术有限公司 | Substrate detection device and method |
| CN103076345A (en) * | 2013-01-16 | 2013-05-01 | 东莞市三姆森光电科技有限公司 | A detection method of ITO conductive glass and its automatic optical detection system |
| CN103440654A (en) * | 2013-08-27 | 2013-12-11 | 南京大学 | LCD foreign body defect detection method |
| CN103440654B (en) * | 2013-08-27 | 2016-08-10 | 南京大学 | A kind of LCD foreign body defect detection method |
| CN104316541A (en) * | 2014-11-12 | 2015-01-28 | 京东方科技集团股份有限公司 | Defect detection device and polaroid attaching equipment |
| US10005093B2 (en) | 2015-05-11 | 2018-06-26 | Boe Technology Group Co., Ltd. | Foreign object detecting device and coating system |
| CN104808213A (en) * | 2015-05-11 | 2015-07-29 | 合肥京东方光电科技有限公司 | Foreign matter detecting device and coating system |
| CN105388642B (en) * | 2015-11-14 | 2019-01-15 | 合肥骇虫信息科技有限公司 | A kind of liquid crystal display panel filth test system |
| CN105388642A (en) * | 2015-11-14 | 2016-03-09 | 合肥骇虫信息科技有限公司 | Liquid crystal display panel foreign matter detection system |
| CN106773160A (en) * | 2016-12-15 | 2017-05-31 | 东旭科技集团有限公司 | The hand inspection servicing unit of glass substrate, inspection system and its inspection method |
| CN106773160B (en) * | 2016-12-15 | 2019-07-05 | 东旭科技集团有限公司 | The manual inspection auxiliary device of glass substrate checks system and its inspection method |
| CN106842650A (en) * | 2017-04-10 | 2017-06-13 | 京东方科技集团股份有限公司 | The processing unit of display base plate foreign matter, the processing method of display base plate foreign matter |
| WO2018188497A1 (en) * | 2017-04-10 | 2018-10-18 | 京东方科技集团股份有限公司 | Display substrate foreign matter processing device and display substrate foreign matter processing method |
| CN106842650B (en) * | 2017-04-10 | 2019-06-07 | 京东方科技集团股份有限公司 | Processing unit, the processing method of display base plate foreign matter of display base plate foreign matter |
| CN110018178A (en) * | 2019-04-28 | 2019-07-16 | 华南理工大学 | A kind of mobile phone bend glass typical defect on-line measuring device and method |
| CN110018178B (en) * | 2019-04-28 | 2024-06-07 | 华南理工大学 | Device and method for detecting typical defects of curved glass of mobile phone on line |
| CN111709921A (en) * | 2020-06-02 | 2020-09-25 | Oppo（重庆）智能科技有限公司 | Detection method, detection device, electronic device and computer readable storage medium |
| CN111709921B (en) * | 2020-06-02 | 2022-11-15 | Oppo（重庆）智能科技有限公司 | Detection method, detection device, electronic device and computer readable storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20160903 |