CN104316541A - Defect detection device and polaroid attaching equipment - Google Patents
Defect detection device and polaroid attaching equipment Download PDFInfo
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- CN104316541A CN104316541A CN201410645979.8A CN201410645979A CN104316541A CN 104316541 A CN104316541 A CN 104316541A CN 201410645979 A CN201410645979 A CN 201410645979A CN 104316541 A CN104316541 A CN 104316541A
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Abstract
The invention provides a defect detection device and a polaroid attaching equipment. The defect detection device comprises a laser emitter and an image acquisition device, wherein the laser emitter is used for illuminating laser to the surface of a panel to be detected; the image acquisition device is used for obtaining height information of different positions in a region subjected to laser illumination according to laser reflected by the region subjected to laser illumination in the surface, and converting the height information into corresponding gray information to obtain a gray image of the region subjected to laser illumination. According to the defect detection device provided by the invention, the laser is emitted to the surface of the panel through the laser emitter at first, then the gray image of the region subjected to laser illumination is obtained according to the laser reflected by the surface of the panel to be detected through the image acquisition device, and the heights of different positions in the obtained gray image are displayed through different gray scales, so that the defect information in the illuminated region can be institutively reflected and the surface defect detection reliability of the panel is improved.
Description
Technical field
The present invention relates to display field, particularly relate to a kind of defect detecting device and polaroid attaching device.
Background technology
Thin Film Transistor-LCD (Thin Film Transistor-Liquid Crystal Display, be called for short TFT-LCD) be the flat-panel monitor of current main-stream, its basic structure comprises the structures such as color membrane substrates, liquid crystal layer, array base palte, polaroid.
In the manufacture craft of liquid crystal display, when Single Panel is after Sliming, because polishing cause easily makes the surface of panel occur concavo-convex defect point, therefore, the surface of counter plate before attaching polaroid (Pol) is needed to detect, at present, normally to judge on panel whether existing defects point in the mode of eye-observation, but, for sags and crests less on panel, it is not easily identified by the human eye, and easily causes undetected, thus causes the problem that panel surface defects detection reliability is not high.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is to provide a kind of defect detecting device and polaroid attaching device, can improve the reliability of panel surface defects detection.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of defect detecting device, comprising generating laser, image collecting device;
Described generating laser is used for the surperficial irradiating laser to measured panel;
Described image collecting device is used for the elevation information obtaining diverse location in the region of described illuminated laser according to the laser of the regional reflex of laser illuminated in described surface, and described elevation information is converted to corresponding half-tone information, obtain the gray level image in the region of described illuminated laser.
Further, described image collecting device comprises:
Light receiver module, for gathering the laser of the regional reflex of illuminated laser in described surface;
Modular converter, for obtaining the elevation information of diverse location in the region of described illuminated laser according to the laser of described reflection, and is converted to corresponding half-tone information, obtains the gray level image in the region of described illuminated laser by described elevation information.
Further, described defect detecting device also comprises conveyer, described generating laser is the linear laser transmitter be fixed on above described conveyer, controls the direction that described measured panel is being preset move the gray level image obtaining the described surperficial zones of different of multiple correspondence by described conveyer.
Further, the moving direction of described measured panel is vertical with the linear laser that described linear emitter is launched.
Further, described generating laser and described light receiver module are all positioned at directly over described conveyer.
Further, described image collecting device also comprises concatenation module, for being spliced by the multiple gray level images obtained, obtains the overall intensity image on the surface of described measured panel.
Further, also comprise display device, for showing the gray level image that described image collecting device obtains.
For solving the problems of the technologies described above, present invention also offers a kind of polaroid attaching device, comprising above-mentioned arbitrary defect detecting device.
(3) beneficial effect
Defect detecting device provided by the invention, first by the surface-emitting laser of generating laser to panel, then obtained the gray level image of illuminated laser region according to the laser of measured panel surface reflection by image collecting device, in the gray level image obtained, the height of diverse location is shown by different gray scales, thus the defect information in irradiated area can be reflected more intuitively, improve the reliability of panel surface defects detection.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of defect detecting device that embodiment of the present invention provides;
Fig. 2 is the schematic diagram of the another kind of defect detecting device that embodiment of the present invention provides.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the schematic diagram of a kind of defect detecting device that embodiment of the present invention provides, and this defect detecting device comprises generating laser 1, image collecting device 2;
Described generating laser 1 is for the surperficial irradiating laser to measured panel 3;
Described image collecting device 2 obtains the elevation information of diverse location in the region 31 of described illuminated laser for the laser reflected according to the region 31 of laser illuminated in described surface, and described elevation information is converted to corresponding half-tone information, obtain the gray level image in the region 31 of described illuminated laser.
Particularly, image collecting device can adopt laser triangulation to obtain the elevation information of diverse location in the region of illuminated laser, and wherein, this image collecting device comprises:
Light receiver module, for gathering the laser of the regional reflex of illuminated laser in described surface;
Modular converter, for obtaining the elevation information of diverse location in the region of described illuminated laser according to the laser of described reflection, and is converted to corresponding half-tone information, obtains the gray level image in the region of described illuminated laser by described elevation information.
The defect detecting device that embodiment of the present invention provides, first by the surface-emitting laser of generating laser to panel, then obtained the gray level image of illuminated laser region according to the laser of measured panel surface reflection by image collecting device, in the gray level image obtained, the height of diverse location is shown by different gray scales, thus the defect information in irradiated area can be reflected more intuitively, improve the reliability of panel surface defects detection.
See the schematic diagram that Fig. 2, Fig. 2 are the another kind of defect detecting devices that embodiment of the present invention provides, this defect detecting device comprises generating laser 1, image collecting device, conveyer 4;
Wherein, generating laser 1 is linear laser transmitter, image collecting device comprises light receiver module 21 and modular converter 22, generating laser 1 and light receiver module 21 are all fixed on the top of conveyer 4, control described measured panel 3 to move in the direction of presetting thus can obtain multiple gray level image corresponding to measured panel 3 zones of different on the surface by described conveyer.Preferably, above-mentioned generating laser 1 and light receiver module 21 can all be arranged at directly over conveyer 4.
In embodiment of the present invention, image collecting device can adopt laser triangulation to obtain the elevation information of each position, measured panel surface, particularly, generating laser 1 carries out laser irradiation with the emission angle preset to the surface of measured panel, the cross direction on measured panel surface produces a linear beam, light receiver module can adopt Array CCD sensor, the laser beam of panel surface to be measured is scanned, the direction of its scanning is perpendicular to measured panel surface, thus obtain the elevation information of each position on cross direction, irradiated area, in irradiated area, each position on its cross direction obtains respective elevation information, then by modular converter, the elevation information of each position is converted to corresponding half-tone information, thus obtain the gray level image of irradiated area, then, control by conveyer 4 direction that measured panel 3 is being preset to move, its moving direction can perpendicular with the linear laser art that described linear emitter is launched (namely the moving direction of measured panel be vertical with the cross direction of measured panel 4), thus change the position of the illuminated laser region in measured panel surface, light receiver module scans the laser beam of panel surface to be measured again, thus the elevation information of each position on cross direction in laser-irradiated domain after being changed, and then obtain corresponding gray level image, by controlling the translational speed of conveyer and the sweep frequency of light receiver module, thus the gray level image of measured panel surface (i.e. moving direction) regional on length direction can be obtained.Preferably, above-mentioned image collecting device also comprises concatenation module, is spliced by the multiple gray level images obtained by this concatenation module, thus can obtain the overall intensity image on the surface of measured panel.
Preferably, see Fig. 2, above-mentioned defect detecting device also comprises display device 5, can show the gray level image that image collecting device obtains in real time, thus facilitate user to check testing result by display device 5.
The defect detecting device that embodiment of the present invention provides, linear laser is irradiated on the surface of measured panel by generating laser, and the region of the illuminated laser in measured panel surface is changed by conveyer, make image capture module can obtain the gray level image of the surperficial regional in the direction of movement of measured panel, then the splicing of the gray level image of the regional obtained is obtained the overall intensity image on the surface of measured panel, the defect information on measured panel surface can be reflected intuitively by the overall intensity image of this measured panel, avoid the impact of human factor counter plate surface defects detection, improve the reliability of panel surface defects detection.
In addition, embodiment of the present invention additionally provides a kind of polaroid attaching device, comprises above-mentioned defect detecting device.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (8)
1. a defect detecting device, is characterized in that, comprises generating laser, image collecting device;
Described generating laser is used for the surperficial irradiating laser to measured panel;
Described image collecting device is used for the elevation information obtaining diverse location in the region of described illuminated laser according to the laser of the regional reflex of laser illuminated in described surface, and described elevation information is converted to corresponding half-tone information, obtain the gray level image in the region of described illuminated laser.
2. defect detecting device according to claim 1, is characterized in that, described image collecting device comprises:
Light receiver module, for gathering the laser of the regional reflex of illuminated laser in described surface;
Modular converter, for obtaining the elevation information of diverse location in the region of described illuminated laser according to the laser of described reflection, and is converted to corresponding half-tone information, obtains the gray level image in the region of described illuminated laser by described elevation information.
3. defect detecting device according to claim 2, it is characterized in that, described defect detecting device also comprises conveyer, described generating laser is the linear laser transmitter be fixed on above described conveyer, controls the direction that described measured panel is being preset move the gray level image obtaining the described surperficial zones of different of multiple correspondence by described conveyer.
4. defect detecting device according to claim 3, is characterized in that, the moving direction of described measured panel is vertical with the linear laser that described linear emitter is launched.
5. defect detecting device according to claim 3, is characterized in that, described generating laser and described light receiver module are all positioned at directly over described conveyer.
6. defect detecting device according to claim 3, is characterized in that, described image collecting device also comprises concatenation module, for being spliced by the multiple gray level images obtained, obtains the overall intensity image on the surface of described measured panel.
7., according to the arbitrary described defect detecting device of claim 1 to 6, it is characterized in that, also comprise display device, for showing the gray level image that described image collecting device obtains.
8. a polaroid attaching device, is characterized in that, comprise as arbitrary in claim 1-7 as described in defect detecting device.
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| CN201410645979.8A CN104316541A (en) | 2014-11-12 | 2014-11-12 | Defect detection device and polaroid attaching equipment |
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| CN201410645979.8A CN104316541A (en) | 2014-11-12 | 2014-11-12 | Defect detection device and polaroid attaching equipment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136821A (en) * | 2015-08-21 | 2015-12-09 | 深圳大学 | Imaging simulation method and system for detecting polaroid internal defects |
| CN106018431A (en) * | 2016-05-23 | 2016-10-12 | 南京林业大学 | Solid wood plate surface crack detecting system and detecting method |
| CN106896113A (en) * | 2016-12-27 | 2017-06-27 | 住华科技股份有限公司 | Defect detection system and method |
| CN109164123A (en) * | 2017-06-29 | 2019-01-08 | 宝山钢铁股份有限公司 | The sample previewing method and device of X fluorescence spectrometer |
| CN109521022A (en) * | 2019-01-23 | 2019-03-26 | 苏州鼎纳自动化技术有限公司 | Touch screen defect detecting device based on the confocal camera of line |
| CN109782459A (en) * | 2018-12-24 | 2019-05-21 | 惠科股份有限公司 | Polarizer sheet sticking detection method, device and display device |
| CN110346953A (en) * | 2019-07-02 | 2019-10-18 | 盐城华昱光电技术有限公司 | A kind of the sheet detection system and method for the removing of liquid crystal display die set polaroid |
| CN111429646A (en) * | 2020-05-07 | 2020-07-17 | 中国工商银行股份有限公司 | Banknote counter, banknote counting method, device, system and medium |
| CN115308216A (en) * | 2022-10-12 | 2022-11-08 | 山东创新精密科技有限公司 | Device and method for online detecting surface defects of aluminum profile |
| CN115979597A (en) * | 2023-02-13 | 2023-04-18 | 杭州简并激光科技有限公司 | Defect detection method for cone mirror of laser level meter |
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| CN105136821B (en) * | 2015-08-21 | 2017-11-10 | 深圳大学 | A kind of imaging simulation method and its system for being used to detect polaroid internal flaw |
| CN105136821A (en) * | 2015-08-21 | 2015-12-09 | 深圳大学 | Imaging simulation method and system for detecting polaroid internal defects |
| CN106018431A (en) * | 2016-05-23 | 2016-10-12 | 南京林业大学 | Solid wood plate surface crack detecting system and detecting method |
| CN106896113A (en) * | 2016-12-27 | 2017-06-27 | 住华科技股份有限公司 | Defect detection system and method |
| CN109164123A (en) * | 2017-06-29 | 2019-01-08 | 宝山钢铁股份有限公司 | The sample previewing method and device of X fluorescence spectrometer |
| CN109782459A (en) * | 2018-12-24 | 2019-05-21 | 惠科股份有限公司 | Polarizer sheet sticking detection method, device and display device |
| CN109782459B (en) * | 2018-12-24 | 2020-11-24 | 惠科股份有限公司 | Polaroid attaching detection method and device and display device |
| US11776113B2 (en) | 2018-12-24 | 2023-10-03 | HKC Corporation Limited | Polarizer attachment detection method and device, and display device |
| CN109521022A (en) * | 2019-01-23 | 2019-03-26 | 苏州鼎纳自动化技术有限公司 | Touch screen defect detecting device based on the confocal camera of line |
| CN110346953B (en) * | 2019-07-02 | 2022-08-09 | 晋城市龙鑫达光电科技有限公司 | Tearing detection system and method for stripping polaroid of liquid crystal display module |
| CN110346953A (en) * | 2019-07-02 | 2019-10-18 | 盐城华昱光电技术有限公司 | A kind of the sheet detection system and method for the removing of liquid crystal display die set polaroid |
| CN111429646A (en) * | 2020-05-07 | 2020-07-17 | 中国工商银行股份有限公司 | Banknote counter, banknote counting method, device, system and medium |
| CN111429646B (en) * | 2020-05-07 | 2021-12-03 | 中国工商银行股份有限公司 | Banknote counter, banknote counting method, device, system and medium |
| CN115308216A (en) * | 2022-10-12 | 2022-11-08 | 山东创新精密科技有限公司 | Device and method for online detecting surface defects of aluminum profile |
| CN115308216B (en) * | 2022-10-12 | 2023-03-10 | 山东创新精密科技有限公司 | Device and method for online detection of aluminum profile surface defects |
| CN115979597A (en) * | 2023-02-13 | 2023-04-18 | 杭州简并激光科技有限公司 | Defect detection method for cone mirror of laser level meter |
| CN115979597B (en) * | 2023-02-13 | 2024-01-12 | 杭州简并激光科技有限公司 | Defect detection method for conical mirror of laser level meter |
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Application publication date: 20150128 |