CN203465488U - Liquid crystal display panel detecting system - Google Patents
Liquid crystal display panel detecting system Download PDFInfo
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- CN203465488U CN203465488U CN201320510647.XU CN201320510647U CN203465488U CN 203465488 U CN203465488 U CN 203465488U CN 201320510647 U CN201320510647 U CN 201320510647U CN 203465488 U CN203465488 U CN 203465488U
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Abstract
The utility model discloses a liquid crystal display panel detecting system which is designed in order to solve the problems that in the prior art, a liquid crystal display panel is manually knocked, the magnitude and the angle of the force and the evenness of the force are difficult to control, so that the detection result errors are large, the fragmentation of the liquid crystal display panel is caused during detection and the like. The liquid crystal display panel detecting system comprises a pressing device, wherein the pressing device is designed to be separated from the liquid crystal display panel so as to release a pressing medium to the surface of the liquid crystal display panel. The liquid crystal display panel detecting system has the advantages that the structure is simple, the implementation is convenient and simple, and the force, the angle and the evenness of pressure applied to the liquid crystal display panel are easy to control, so that the detection errors are reduced, the detection precision is improved, and the scrap caused by the fragmentation of the liquid crystal display panel due to manual knocking is favorably reduced.
Description
Technical field
The utility model relates to demonstration field, relates in particular to a kind of liquid crystal panel detection system.
Background technology
In the manufacturing process of display panels, need to check that Touch Mura(spot or local look uneven).Display panels comprises array base palte and color membrane substrates, array base palte and color membrane substrates are supported by the chock insulator matter being positioned between the two, and in the space with color membrane substrates, box-like being become at array base palte, poured into liquid crystal molecule, simultaneously also pair array substrate and color film base substrate have certain supporting role to liquid crystal molecule.
When the liquid crystal molecule amount of pouring into is lower than standard value lower limit, the pair array substrate of liquid crystal molecule and the supporting role of color membrane substrates are little, and the supporting role of chock insulator matter is large.Under the effect that this situation is knocked in external force, chock insulator matter will depart from original position, the anchorage force that need to provide due to chock insulator matter is large, thereby the resistance that is returned to original position is also large, cause chock insulator matter cannot be returned in time original position, there is light leakage phenomena in the original position that forms chock insulator matter place, forms Touch Mura.
In order to detect the look uneven that causes less due to the liquid crystal molecule amount of pouring into, existing detection method is, the surface of panel is knocked in artificial passing through, and by eye-observation, after knocking, whether whether display panels occurs that look uneven.This implementation method is without special pick-up unit, detect also comparatively simple, but there is following problem:
First: manually knock detection, the dynamics of knocking easily occurs inequality, causes detection architecture error large;
Second: knock, overexertion or the angle of knocking are not right, the problem that the appearance that easily causes panel is broken, causes the scrappage of panel to rise;
Utility model content
(1) utility model object
For the problems referred to above, the utility model aim to provide a kind of impact power all, power and angle all control accurately easy liquid crystal panel detection system.
(2) technical scheme
For reaching above-mentioned purpose, liquid crystal panel detection system of the present invention comprises device for exerting;
The setting separated with liquid crystal panel of described device for exerting, in order to discharge to liquid crystal panel surface the medium of exerting pressure.
Preferably, described device for exerting is in order to the gas injection apparatus to liquid crystal panel surface gas jet; The described medium of exerting pressure is mobile gas.
Preferably, described gas injection apparatus comprises piezoelectric injector, and described piezoelectric injector gas ejection end is provided with a transparent air cavity; Described transparent air cavity one side is evenly distributed with some pores.
Preferably, described device for exerting is for to launch hyperacoustic ultrasonic unit to liquid crystal panel surface; The described medium of exerting pressure is ultrasound wave.
Preferably, also comprise testing result identifying unit;
Described ultrasonic unit is also for carrying out ultrasonic imaging to described liquid crystal panel;
Described testing result identifying unit, receives described ultrasonic imaging, and according to described ultrasonic imaging, liquid crystal panel is judged.
Preferably, also comprise in order to liquid crystal panel is carried out to image acquisition, and the vision inspection apparatus that carries out result judgement according to the image gathering.
Preferably, described vision inspection apparatus comprises:
Infrared camera, in order to described liquid crystal panel infrared imaging, and exports infrared detection image;
Testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.
Preferably, also comprise signal generator and backlight;
Described backlight provides display backlight for liquid crystal panel;
Described signal generator is in order to provide detection signal to liquid crystal panel, and described liquid crystal panel shows image according to described detection signal;
Described vision inspection apparatus comprises camera and testing result decision maker:
Described camera, gathers the shown image of liquid crystal panel and detects picture to form;
Described testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.
(3) beneficial effect of the utility model liquid crystal panel detection system
The utility model liquid crystal panel detection system, provides a kind of device of manually knocking in the past of replacing, and liquid crystal panel property performance period is exerted pressure, for detection of going out Touch Mura, compared to manually knocking, the dynamics of exerting pressure and angle controllability are good, thereby are conducive to improve accuracy in detection and precision.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of liquid crystal panel detection system described in the utility model embodiment;
Fig. 2 is the plan structure schematic diagram of the transparent cavity described in Fig. 1;
Fig. 3 is the structural representation of the another kind of liquid crystal panel detection system described in the utility model embodiment.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model is described further.
The present embodiment liquid crystal panel detection system, comprises device for exerting; The setting separated with liquid crystal panel of described device for exerting, in order to discharge to liquid crystal panel surface the medium of exerting pressure.And two kinds of equipment of exerting pressure below proposing in the present embodiment; Be a gas injection apparatus, another kind is ultrasonic unit.
Described device for exerting is in order to the gas injection apparatus to liquid crystal panel surface gas jet.The described medium of exerting pressure is mobile gas, and mobile gas sprays to described liquid crystal panel, thereby makes described liquid crystal panel surface stressed.The structure of described gas injection apparatus can be to comprise the isostructural entity apparatus of atmosphere storage chamber, airflow line and shower nozzle, when application, pass through to open and close shower nozzle, control the ejection of gas, when gas is sprayed onto the surface of described liquid crystal panel, liquid crystal panel surface has born the momentum that gas motion speed changes, thereby be subject to pressure, thereby realized, exerted pressure.Employing gas is exerted pressure, the gentleness of exerting pressure, and can realize the control to pressure by controlling the amount of disposable ejection and the speed of gas ejection of air-flow, by controlling the angle of gas ejection, realize the control of the angle of exerting pressure, thereby have and realize easyly, the effective advantage of exerting pressure, adopts gas injection apparatus to exert pressure with respect to manually knocking, there is the advantages such as the dynamics of exerting pressure and angle are controlled conveniently, and dynamics is even.
A kind of concrete gas injection apparatus is below provided; Described gas injection apparatus comprises piezoelectric injector, and described piezoelectric injector gas ejection end is provided with a transparent air cavity; Described transparent air cavity one side is evenly distributed with some pores.Described pore is used for aiming at liquid crystal panel surface, and gas is ejected into liquid crystal panel surface to exert pressure from described pore.Described air cavity is arranged to transparent, convenient detection while continuing liquid crystal panel to exert pressure or after exerting pressure.Wherein, piezo jet device is normally that circular piezoelectric pottery twin lamella and the support that 20cm, thickness are 1mm forms by diameter.The edge of wafer is fixed on support, and piezoelectric bimorph is bonded together and is formed by two opposite polarity piezoelectric ceramic pieces, and pumping signal is added on the upper and lower surface of twin lamella, and two piezoelectric ceramic pieces are connected on circuit.Therefore under electric field excitation, when a certain moment, wherein a slice was extended, another sheet shortens, and makes potsherd produce flexural vibrations.Piezoelectric bimorph is done continuous periodicity flexural vibrations under the driving of additional periodic activation signals, thereby makes gas ejection.Concrete wherein said transparent air cavity 110 is arranged on a side of the reception pressure of liquid crystal panel as Figure 1-Figure 2, and described piezoelectric injector 120 is connected with described transparent air cavity 110 by pipeline; The direction that the air-flow that wherein said arrow represents sprays from the pore 111 of transparent air cavity 110 to liquid crystal panel.Wherein 130 stilts that prevent for liquid crystal panel, are column in the present embodiment, and concrete can be also block, in concrete implementation process, arranges as required.When described liquid crystal panel is assembled with backlight, the backlight that can directly utilize liquid crystal panel to carry is provided by backlight providing, when described liquid crystal panel is not also assembled with backlight, also needing provides light source to liquid crystal panel, therefore backlight 140 is also provided in the present embodiment.Described backlight can be the backlight of cold-cathode tube, can also be the backlight of light emitting diode.If described liquid crystal panel is not also for attaching upper and lower Polarizer, in the process detecting, also need to be under increasing between backlight 140 and liquid crystal panel Polarizer, in the bright dipping side of liquid crystal panel, also need to arrange Polarizer, guarantee liquid crystal panel demonstrates required picture like this.
In traditional testing process, to liquid crystal panel or liquid-crystal apparatus, provide backlight and output detection signal, by the logical detection picture to liquid crystal panel of human eye, observe by the look inequality after knocking and carry out bad judgement or the judgement of grade, this judgement will cause undetected, strong dependence staff's detectability, experience and duty, thus the accuracy of testing result and degree of accuracy are not very stable.In order to address the above problem, the liquid crystal panel detection system described in the present embodiment, has also set up vision inspection apparatus, and the look inequality after whether having occurred exerting pressure in order to automatic decision is Touch Mura.
The structure of several concrete vision inspection apparatus is below provided:
The first: vision inspection apparatus comprises infrared camera and testing result identifying unit.Described infrared camera, in order to described liquid crystal panel infrared imaging, and exports infrared detection image; Described testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.What described testing result identifying unit was concrete can enter oneself for the examination image processing module, contrast module etc.Described image processing module is in order to carry out the infrared detection image of collection denoising, to deepen the processing such as contrast; Described contrast module is in order to will gather image and be stored in the good image of its inside or the bad image of different brackets contrasts contrasting between infrared detection image maybe, thereby judge whether liquid crystal panel is non-defective unit or judgement grade.When the realization of contrast module is the contrast between infrared detection image; The contrast of the image before described infrared camera can gather liquid crystal panel is exerted pressure and after exerting pressure.Concrete described image processing module can be common image processor; Described contrast module can be the contrast device consisting of logical circuit, for example the contrast device in common mimic channel; Also can be PLC Programmable Logic Controller, DSP digital signal processor or the MCU single-chip microcomputer etc. that are packaged with firmware.Adopt infrared imaging, the ultrared difference of utilizing the interior chock insulator matter of liquid crystal panel and liquid crystal molecule to send realizes the imaging of image, thereby deformation and the skew of chock insulator matter before and after exerting pressure can show accurately.Adopt infrared imaging, detection signal that need not be outside the liquid crystal panel amount of imports, realizes simple and efficient.
The second: liquid crystal panel detection system also comprises signal generator and backlight;
Described backlight provides display backlight for liquid crystal panel;
Described signal generator is in order to provide detection signal to liquid crystal panel, and described liquid crystal panel shows image according to described detection signal;
Described vision inspection apparatus comprises camera and testing result decision maker:
Described camera, gathers the shown image of liquid crystal panel and detects picture to form; Described camera can be CCD camera.The English full name of CCD is Charge-coupled Device; CCD Chinese full name is charge coupled cell, and ccd image sensor is otherwise known as.CCD is a kind of semiconductor devices, optical image can be converted into digital signal.The size of the area covering according to the CCD camera lens of selecting, can adopt the disposable whole detection picture that just can shoot display panels, or adopt the CCD camera lens of scan-type, by controlling relatively moving of camera lens and liquid crystal panel, realize the reception or the image acquisition that detect picture.
Described testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.Same described testing result judging unit, the method of judging has multiple, can be the comparison of carrying out between image, can be also single a kind of threshold decision that detects picture epigraph colour difference, realizes the bad judgement of liquid crystal panel detection and the division of grade.
Specifically as shown in Figure 3, described liquid crystal panel detection system comprises, contraposition board is in order to prevent that liquid crystal panel 210, camera 220 are in order to gather image, and by the image transmitting gathering to image processor, by image processor, image is processed, can be for the image of comparison thereby obtain; Described the comparer image after reception & disposal and pre-stored image from described image processor are processed, or receive two width images before and after exerting pressure and compare, thereby obtain comparative result, carry out liquid crystal panel and whether occur that look uneven, the judgement of look uneven corresponding grade.In the process of the image acquisition shown in Fig. 3, to adopt the mode of scanning to detect liquid crystal panel, and by step motor control contraposition board, thereby mobile liquid crystal panel, thereby realize the scanning of the everywhere of 220 pairs of liquid crystal panel viewing areas of camera, thereby extract the detection of the look inequality whether whole liquid crystal panel occur after knocking.
The another kind of device for exerting providing is in the present embodiment ultrasonic unit.Ultrasound wave is exerted pressure to liquid crystal panel as the medium of exerting pressure.Described device for exerting is ultrasonic unit transmitting ultrasound wave, and liquid crystal panel is experienced hyperacoustic pressure, thereby realizes exerting pressure to liquid crystal panel.Described ultrasonic unit can be any one of existing ultrasonic unit, therefore concrete structure does not just repeat at this.
Same ultrasonic unit can also be for imaging, at the ultrasonic unit described in this present embodiment also in order to by ultrasound wave, the inner structure of liquid crystal panel is carried out to imaging, thereby can well reflect chock insulator matter shape and position by ultrasonic imaging.In addition described crystal panel detection system also comprises testing result identifying unit; And described testing result identifying unit, receives described ultrasonic imaging, and according to described ultrasonic imaging, liquid crystal panel is judged.
Same can ultrasonic imaging, the ultrasonic imaging before liquid crystal panel is exerted pressure with exert pressure after the contrast of ultrasonography, or only gather the ultrasonography after exerting pressure, then by standard picture to recently carrying out the division etc. of bad judgement or grade.
Comprehensively above-mentioned, the liquid crystal panel detection system described in the present embodiment, provides device for exerting, and described device for exerting has two kinds of structures at least, a kind of gas of gas jet spray exert pressure, ultrasonic unit that a kind of ultrasound wave is exerted pressure.Vision inspection apparatus is provided in addition.Vision inspection apparatus can be traditional common optically detecting camera lens, can also be infrared imaging camera lens, can also be the ultrasonic imaging of ultrasonic unit.When carrying out bad judgement, can be, before and after exerting pressure, liquid crystal panel is detected to picture or the skew of inner structure chock insulator matter and the contrast of deformation, or the contrast of detected image and standard picture or the direct judgement of judging the look inequality on detection picture etc. realize the detection of final Mura, there is testing result and removed the error that human factor causes, reduced the risk of the excessive and fragmentation that angle is not right of power, and have simple in structurely, realize easy advantage.
Above embodiment is only for illustrating the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (8)
1. a liquid crystal panel detection system, is characterized in that, comprises device for exerting;
The setting separated with liquid crystal panel of described device for exerting, in order to discharge to liquid crystal panel surface the medium of exerting pressure.
2. liquid crystal panel detection system according to claim 1, is characterized in that, described device for exerting is in order to the gas injection apparatus to liquid crystal panel surface gas jet; The described medium of exerting pressure is mobile gas.
3. liquid crystal panel detection system according to claim 2, is characterized in that, described gas injection apparatus comprises piezoelectric injector, and described piezoelectric injector gas ejection end is provided with a transparent air cavity; Described transparent air cavity one side is evenly distributed with some pores.
4. liquid crystal panel detection system according to claim 1, is characterized in that, described device for exerting is for to launch hyperacoustic ultrasonic unit to liquid crystal panel surface; The described medium of exerting pressure is ultrasound wave.
5. liquid crystal panel detection system according to claim 4, is characterized in that, also comprises testing result identifying unit;
Described ultrasonic unit is also for carrying out ultrasonic imaging to described liquid crystal panel;
Described testing result identifying unit, receives described ultrasonic imaging, and according to described ultrasonic imaging, liquid crystal panel is judged.
6. according to the liquid crystal panel detection system described in claim 1,2,3 or 4, it is characterized in that, also comprise in order to liquid crystal panel is carried out to image acquisition, and the vision inspection apparatus that carries out result judgement according to the image gathering.
7. liquid crystal panel detection system according to claim 6, is characterized in that, described vision inspection apparatus comprises:
Infrared camera, in order to described liquid crystal panel infrared imaging, and exports infrared detection image;
Testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.
8. liquid crystal panel detection system according to claim 6, is characterized in that, also comprises signal generator and backlight;
Described backlight provides display backlight for liquid crystal panel;
Described signal generator is in order to provide detection signal to liquid crystal panel, and described liquid crystal panel shows image according to described detection signal;
Described vision inspection apparatus comprises camera and testing result decision maker:
Described camera, gathers the shown image of liquid crystal panel and detects picture to form;
Described testing result judging unit, receives described infrared detection image, according to described infrared detection image, carries out liquid crystal panel to judge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320510647.XU CN203465488U (en) | 2013-08-20 | 2013-08-20 | Liquid crystal display panel detecting system |
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| CN201320510647.XU CN203465488U (en) | 2013-08-20 | 2013-08-20 | Liquid crystal display panel detecting system |
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| CN203465488U true CN203465488U (en) | 2014-03-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614899A (en) * | 2015-03-02 | 2015-05-13 | 合肥京东方光电科技有限公司 | Liquid crystal pouring method, device for dispersing liquid crystals and liquid crystal screen manufacturing equipment |
| WO2015143769A1 (en) * | 2014-03-27 | 2015-10-01 | 深圳市华星光电技术有限公司 | Light-on jig and light-on test method |
| CN106482930A (en) * | 2016-10-25 | 2017-03-08 | 弘森电子(上海)有限公司 | The pressure detection method of display floater and device |
| CN106526907A (en) * | 2015-09-10 | 2017-03-22 | 由田新技股份有限公司 | Panel pressing inspection machine |
| CN107505742A (en) * | 2017-09-27 | 2017-12-22 | 京东方科技集团股份有限公司 | Mechanism for testing and its method of testing |
| CN109799629A (en) * | 2019-03-07 | 2019-05-24 | 昆山龙腾光电有限公司 | Testing device of display panel and test method |
| CN109991767A (en) * | 2017-12-29 | 2019-07-09 | 由田新技股份有限公司 | Panel pressing checks equipment |
| CN111176002A (en) * | 2020-01-20 | 2020-05-19 | 京东方现代（北京）显示技术有限公司 | Knocking jig |
-
2013
- 2013-08-20 CN CN201320510647.XU patent/CN203465488U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143769A1 (en) * | 2014-03-27 | 2015-10-01 | 深圳市华星光电技术有限公司 | Light-on jig and light-on test method |
| CN104614899A (en) * | 2015-03-02 | 2015-05-13 | 合肥京东方光电科技有限公司 | Liquid crystal pouring method, device for dispersing liquid crystals and liquid crystal screen manufacturing equipment |
| CN106526907A (en) * | 2015-09-10 | 2017-03-22 | 由田新技股份有限公司 | Panel pressing inspection machine |
| CN106526907B (en) * | 2015-09-10 | 2019-09-10 | 由田新技股份有限公司 | Panel pressing inspection machine |
| CN106482930A (en) * | 2016-10-25 | 2017-03-08 | 弘森电子(上海)有限公司 | The pressure detection method of display floater and device |
| CN107505742A (en) * | 2017-09-27 | 2017-12-22 | 京东方科技集团股份有限公司 | Mechanism for testing and its method of testing |
| CN109991767A (en) * | 2017-12-29 | 2019-07-09 | 由田新技股份有限公司 | Panel pressing checks equipment |
| CN109799629A (en) * | 2019-03-07 | 2019-05-24 | 昆山龙腾光电有限公司 | Testing device of display panel and test method |
| CN111176002A (en) * | 2020-01-20 | 2020-05-19 | 京东方现代（北京）显示技术有限公司 | Knocking jig |
| CN111176002B (en) * | 2020-01-20 | 2023-06-23 | 京东方现代（北京）显示技术有限公司 | Knocking jig |
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