CN1318904C - Directional detecting method and device for coordinating film - Google Patents
Directional detecting method and device for coordinating film Download PDFInfo
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- CN1318904C CN1318904C CNB2004100424645A CN200410042464A CN1318904C CN 1318904 C CN1318904 C CN 1318904C CN B2004100424645 A CNB2004100424645 A CN B2004100424645A CN 200410042464 A CN200410042464 A CN 200410042464A CN 1318904 C CN1318904 C CN 1318904C
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Abstract
The present invention relates to a directional detection method of a direction-matching film, which is used for directional detection of a glass baseplate of which surface forms the direction-matching film and is carried out the surface-grinding treatment. The present invention at least comprises the following steps that a layer of water molecules is uniformly adsorbed on the direction-matching film surface of the glass baseplate firstly; a proper light source is used to lead light rays to be projected on the direction-matching film surface secondly; an image pick-up device is used to pick up an image reflected by the direction-matching film surface thirdly; finally, directional comparison detection of the direction-matching film is carried out according to the image and a detection device comprises a conveyor belt, a water molecule anchorage device, the light source and the image pick-up device; the direction-matching film surface of the glass baseplate is upward; the glass baseplate is driven to move via the conveyor belt after the glass baseplate is arranged on the conveyor belt; the water molecule anchorage device is arranged above the conveyor belt; the water molecules around the glass baseplate are adsorbed on the direction-matching film surface in a liquid particle mode according to a condensing principle; the light source is arranged above the conveyor belt; the projecting light rays are arranged on the back of the direction-matching film surface; the image pick-up device picks up the image reflected by the direction-matching film surface; the directional detection is carried out.
Description
Technical field
The invention relates to a kind of method and device of oriented detection of liquid crystal alignment film, but be meant that especially a kind of robotization detects the method and the device of the capacity of orientation of liquid crystal alignment film.
Background technology
At present, liquid crystal material is a kind of crystallinity liquid, have optical anisotropy and flowability, can make molecule do the rotation of different directions according to electric field or variation of temperature, form transparent, translucent, opaque state, and liquid crystal flat panel display promptly is to utilize this principle utilization to rotate the long axis direction of liquid crystal molecule, changes the brightness of penetrating light and imaging.
For making liquid crystal material can on the surface of glass substrate, can present the arrangement and the orientation of systematicness in advance, must form alignment film prior to glass baseplate surface, the material of alignment film is usually based on the polyamide class, after utilizing the embossing mode to be printed on glass baseplate surface, again with felt carry out face mill handle poly-vinegar resinoid surface that (Rubbing) make alignment materials along fixed direction present the orientation state, and after the processing of face mill, usually must carry out the oriented detection of alignment film, to guarantee glass substrate after injecting liquid crystal molecule, liquid crystal molecule can present the arrangement of systematicness on the alignment film surface.
The oriented detection technology of existing alignment film is with the hand-held glass substrate of personnel, before a steam ejiction opening, adjust glass substrate position and angle, when water vapor is contacted with the alignment film surface, because the relative temperature of the alignment film of glass substrate is lower, therefore make the vaporous water molecule can condense into liquid particulate and be attached on the alignment film, also cooperate suitable light source projects on the alignment film surface this moment, utilize reflection ray, on alignment film, adhere to arranging situation with the visual inspection hydrone, judge the directed quality of alignment film.
As shown in Figure 1, it is held with both hands and gets glass substrate 1 for personnel, in a steam ejiction opening 31 before, invest glass substrate 1 with water vapor 32 sprays after, utilize light source 22 throw lights after, adjust glass substrate 1 reflective angle, with the directed quality of naked eyes 4 observation alignment films 10.
Take a broad view of prior art, can find to have following shortcoming:
1. every sheet glass substrate must be piecewise with the attached steam of artificial spray and constantly adjust reflective angle and observe and detect, efficient is low, is unable to cope with the mass-produced demand of product.
2. the accuracy that can't improve judge in conjunction with other device, the personnel that can only rely on are with visual examination, may lack experience or various environmental factor causes erroneous judgement because of personnel, make defective products enter next processing procedure or non-defective unit is rejected.
Therefore, for the research staff of the oriented detection association area of being engaged in alignment film, there's no one who doesn't or isn't be devoted to solve the shortcoming of prior art, in the hope of obtaining more good merchantable brand matter.
Summary of the invention
Fundamental purpose of the present invention is to provide the oriented detection method and the device of an alignment film, to improve the efficient of alignment film oriented detection.
Fundamental purpose of the present invention is to provide the oriented detection method and the device of an alignment film, to improve the accuracy rate of alignment film oriented detection.
The oriented detection device of alignment film provided by the present invention is applicable to that a surface has formed alignment film, and the oriented detection of the glass substrate of process face mill processing, and it comprises a conveying belt, a hydrone attachment device, a light source, an image capture unit.
The direction that conveying belt could carry and drive the past conveying belt conveying of glass substrate moves, and for the ease of carrying out oriented detection, the alignment film surface of glass substrate must be up.
The hydrone attachment device is located at the top of conveying belt, comprise a condenser, a temperature and humidity controller and a plurality of baffler, wherein temperature and humidity controller is positioned at the place ahead of condenser, condenser can be with the temperature cooling of glass baseplate surface, temperature and humidity controller then can produce the environment of relatively-high temperature degree and high humility, when the glass substrate cooling of process condenser earlier, in the hot and humid environment that enters warm and humid controller again and provided, will make airborne vaporous water molecule form liquid particulate and be attached to the alignment film surface of glass substrate.
Among the present invention, temperature and humidity controller also can comprise one or more steam ejiction openings, a certain amount of water vapor is sprayed on the alignment film surface of this glass substrate.
Baffler is arranged between condenser and the temperature and humidity controller or the both sides of hydrone attachment device, required operating environment can be isolated into single chamber, the light source and the image capture unit at mutual interfere with or compromise rear when preventing both starts.
Light source is located at the conveying belt top, its ray cast is in the place ahead of temperature and humidity controller, alignment film surface attachment one deck liquid water molecules particulate when glass substrate, and by after the irradiate light of light source projects, just see through the image capture unit that is arranged at the conveying belt top and capture the image that the alignment film surface is reflected, carry out the detection of directed quality according to institute's picked image information again.
The detection of directed quality can manual type be carried out, and its embodiment is that image information is sent to a display, again by naked eyes in addition interpretation of alignment film.
The detection of directed quality can also an image identification system be judged, the first alignment film image with standard orientation of its embodiment is stored among the database, again the alignment film image information that captured and the standard video in the database are compared, to judge the directed quality of alignment film.
The oriented detection method of alignment film provided by the present invention comprises: (a) make hydrone evenly be attached to alignment film surface (b) again with a light source with the alignment film surface of ray cast in glass substrate; (c) utilize the image capture unit acquisition alignment film image that light reflected again; (d) carry out oriented detection according to the alignment film image that is captured again at last.
The hydrone adherence method that adopted of step (a) wherein, after can utilizing condenser that glass substrate is cooled off, again glass substrate is placed the environment of relatively-high temperature and high humility, make alignment film surface attachment one deck liquid water molecules particulate of glass substrate, wherein the environment of relatively-high temperature and high humility can utilize temperature and humidity controller to be reached; In addition, also can take to reach and make hydrone be attached to the purpose on alignment film surface in the mode that water vapor spray invests the alignment film surface.
Wherein step (d) oriented detection of being carried out can be adopted manual type, utilizes naked eyes that the alignment film image is carried out interpretation; Also can adopt the image identification system that the alignment film image is carried out the interpretation comparison in addition.
Description of drawings
Fig. 1 is the detection synoptic diagram of prior art.
Fig. 2 A is the pick-up unit synoptic diagram of the embodiment of the invention.
Fig. 2 B is another pick-up unit synoptic diagram of the embodiment of the invention.
Fig. 3 A is the detection method process flow diagram of the embodiment of the invention.
Fig. 3 B is another detection method process flow diagram of the embodiment of the invention.
The figure number explanation:
1 glass substrate, 22 light sources
10 alignment films surface, 23 image capture units
11 hydrone adhesion layers, 24 messaging devices
20 conveying belt, 25 displays
21 hydrone attachment devices, 26 image identification systems
211 condensers, 31 steam ejiction openings
212 temperature and humidity controllers, 32 water vapor
213 bafflers, 4 naked eyes
Embodiment
The present invention discloses a kind of oriented detection method of alignment film and can implement the device of the method.
See also Fig. 2 A, it is the oriented detection device synoptic diagram of alignment film of the present invention.It comprises a conveying belt 20, a hydrone attachment device 21, a light source 22 and an image capture unit 23.
Conveying belt 20 can carry a glass substrate 1 and drive it and move toward directions X, and wherein this glass substrate 1 is one to have formed alignment film 10, and the glass plate of handling through the face mill, and its alignment film 10 surfaces up.
With regard on the practice, as long as hydrone attachment device 21 possesses wherein condensation effect that just can produce hydrone of condenser 211 or temperature and humidity controller 212, yet the two uses its condensation effect better simultaneously.Wherein temperature and humidity controller 212 can be a plurality of steam ejiction openings and temperature and the humidity that sees through logic control circuit control steam, to reach the effect of Temperature and Humidity Control.In addition, the equipment arround the steam of being discharged for fear of temperature and humidity controller 212 can have influence on more is provided with baffler 213 to isolate different operation areas in two sides of temperature and humidity controller 212.
The image that the alignment film 10 of image capture unit 23 fechtable irradiate light glass substrates 1 is reflected, this image capture unit 23 can be Charged Coupled Device (CCD), and utilize a messaging device 24 (for example digital signal processor DSP) with after the image processing, export the image of alignment film 10 to display 25.The testing staff can directly carry out oriented detection to the alignment film 10 of glass substrate 1 by transmission display device 25 this moment.
See also Fig. 2 B, flourish along with the image identification technology, the present invention more can be in conjunction with an image identification system 26, it is an image identification system configuration synoptic diagram, alignment film 10 image informations that image capture unit 23 is captured, transfer to image identification system 26, compare, to judge the directed quality of alignment film with the standard alignment film image that is stored in the database.
See also Fig. 3 A and Fig. 3 B, it is the process flow diagram of alignment film detection method of the present invention, and its step comprises: at first a glass substrate 1 is placed on the conveying belt, wherein this glass substrate 1 is one to have formed alignment film 10, and the glass plate of process face mill processing, its alignment film 10 surfaces are (S31) up; Glass substrate 1 is delivered to hydrone attachment device 21 places, utilize condenser 212 that glass substrate is cooled off earlier, utilize temperature and humidity controller 213 that the environment of high temperature and high humility is provided again, the hydrones that make alignment film 10 surfaces of glass substrate 1 produce liquid particulates condense (S32); With the ray cast of light source 22 to alignment film 10 surfaces (S33); The image information (S34) that utilizes image capture unit 23 acquisition alignment films 10 to be reflected; Carry out the oriented detection of alignment film 10 according to institute's picked image information, wherein this step is sent to the image information of alignment film after the display earlier, utilizes manual type (S35a) to carry out interpretation again, as Fig. 3 A.Or this step also can be to utilize an image identification system to receive the alignment film image that is captured, and compares with the standard alignment film image that is stored in the database, to judge the directed quality (S35b) of alignment film, as Fig. 3 B.
Take a broad view of the above, detection method of the present invention and pick-up unit have following advantage:
1. be different from the existing detection technique, personnel must be sprayed glass substrate attached water gas piecewise, and constantly adjust reflective angle for detection, detection method that the present invention discloses and pick-up unit can be fast and make hydrone attached to the alignment film surface equably after, utilize image capture unit to take with the suitableeest angle, but the flow process robotization of oriented detection operation is carried out, and simplification personnel action is so can promote the oriented detection efficient of alignment film really.
2. embodiment one of in the present invention more utilizes and the combining of image identification system, and effectively reduces the erroneous judgement that human factor causes, so can improve the oriented detection accuracy rate of alignment film really.
The above only is the preferred embodiment of the oriented detection method and the device of alignment film of the present invention; it is not in order to limit practical range of the present invention; anyly have the knack of this skill person and all should belong to scope of the present invention in the modification of doing without prejudice to spirit of the present invention, thus protection scope of the present invention when with following described application range as foundation.
Claims (10)
1, a kind of oriented detection method of alignment film is characterized in that, is applicable to that a surface has formed alignment film, and the oriented detection of the glass substrate of process face mill processing, and its step comprises:
One deck hydrone is adhered to the liquid particulate form in alignment film surface at this glass substrate;
With the alignment film surface of ray cast to this glass substrate;
Utilize an image capture unit to capture the image information on this alignment film surface;
Carry out the oriented detection of this alignment film according to this image information.
2, the method for claim 1, it is characterized in that, in the environment of this glass substrate by dislocation one relatively-high temperature in the environment of a relative low temperature and relative high humility, make the vaporous water molecule arround this alignment film be condensed into the liquid water molecules particulate, and then be attached to this alignment film surface.
3, the method for claim 1 is characterized in that, a certain amount of water vapor of alignment film surface sprinkling of this glass substrate, and when this water vapor contacts with this alignment film, the vaporous water molecule will condense into the liquid water molecules particulate and be attached to this alignment film surface.
4, the method for claim 1, it is characterized in that, this image capture unit more comprises a messaging device, it can be with this image information that is captured, image in a display, see through this display with manual type again institute's picked image information is carried out interpretation, defective whether occurs with the directed quality of judging this alignment film.
5, the method for claim 1, it is characterized in that, comprise that more an image identification system carries out oriented detection to this alignment film, this image identification system carries out interpretation according to the institute's picked image information and the degree of variation of the image information that sets, and judges whether the directed quality of this alignment film defective occurs.
6, a kind of oriented detection device of liquid crystal orienting film is characterized in that, is applicable to that a surface has formed alignment film, and the oriented detection of the glass substrate of process face mill processing, and it comprises:
One conveying belt can carry and drive this glass substrate and move, and wherein the alignment film surface of this glass substrate up;
One hydrone attachment device is located at the top of this conveying belt, and utilizes condensation principle to make the hydrone arround this glass substrate be attached to this alignment film surface with liquid particulate;
One light source be located at this conveying belt top, and throw light is in this alignment film surface;
One image capture unit, fechtable are from the image of this alignment film surface reflection, to carry out oriented detection.
7, device as claimed in claim 6, it is characterized in that, this hydrone attachment device comprises a condenser, after this condenser can be cooled to this glass substrate one relative low temperature, makes the vaporous water molecule arround it condense into liquid particulate and be attached to this alignment film surface.
8, device as claimed in claim 6, it is characterized in that, this hydrone attachment device comprises a temperature and humidity controller, this temperature and humidity controller produces the environment of a relatively-high temperature and high humility, after making this glass substrate move into this environment, the vaporous water molecule arround this glass substrate condenses into liquid particulate and is attached to this alignment film surface.
9, device as claimed in claim 6 is characterized in that, this image capture unit more comprises a messaging device and a display, sees through this messaging device and changes this image information, images on this display.
10, device as claimed in claim 6, it is characterized in that this image capture unit more comprises an image identification system, can compare institute's picked image information and be set in this intrasystem standard value image information, according to degree of variation between the two, whether the directed quality of judging alignment film defectiveness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100424645A CN1318904C (en) | 2004-05-21 | 2004-05-21 | Directional detecting method and device for coordinating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100424645A CN1318904C (en) | 2004-05-21 | 2004-05-21 | Directional detecting method and device for coordinating film |
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| Publication Number | Publication Date |
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| CN1580908A CN1580908A (en) | 2005-02-16 |
| CN1318904C true CN1318904C (en) | 2007-05-30 |
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| CNB2004100424645A Active CN1318904C (en) | 2004-05-21 | 2004-05-21 | Directional detecting method and device for coordinating film |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929017B (en) * | 2012-11-19 | 2015-06-10 | 深圳市华星光电技术有限公司 | Endpoint detection method and device of optical alignment liquid crystal material |
| CN104317077B (en) * | 2014-10-22 | 2017-08-25 | 合肥京东方光电科技有限公司 | A kind of alignment films detection machine |
| CN104407457B (en) * | 2014-12-22 | 2017-06-30 | 合肥京东方光电科技有限公司 | A kind of detection means, detection method and friction orientation equipment |
| TWI553304B (en) * | 2015-08-17 | 2016-10-11 | 財團法人工業技術研究院 | Highly reflective surface profile measurement system with air condensation and method thereof |
| CN105182616B (en) * | 2015-08-28 | 2018-10-09 | 京东方科技集团股份有限公司 | Oriented film coating detection device |
| CN106444162B (en) * | 2016-08-22 | 2019-07-30 | 厦门天马微电子有限公司 | Glass substrate, liquid crystal display device and electronic equipment |
| TWI620926B (en) * | 2016-11-04 | 2018-04-11 | 財團法人工業技術研究院 | Workpiece surface detection method and system using the same |
| CN106855662B (en) * | 2017-03-13 | 2019-09-17 | 深圳市华星光电技术有限公司 | Repair the undesirable method of liquid crystal display panel orientation |
| CN108036725B (en) * | 2017-12-01 | 2021-06-04 | 信利（惠州）智能显示有限公司 | Method and device for detecting rubbing alignment film |
| CN109001231A (en) * | 2018-10-15 | 2018-12-14 | 芜湖东旭光电装备技术有限公司 | A kind of surface defects detection equipment |
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| JPH1114548A (en) * | 1997-06-20 | 1999-01-22 | Iinuma Gauge Seisakusho:Kk | Inspection method for orientation film for liquid-crystal display element and manufacture of liquid-crystal display element |
| JPH11202333A (en) * | 1998-01-13 | 1999-07-30 | Canon Inc | Method and device for checking alignment layer and production of liquid crystal element |
| JP2001124686A (en) * | 1999-10-27 | 2001-05-11 | Seiko Epson Corp | Inspecting method for liquid crystal panel substrate and manufacturing method for liquid crystal panel |
| JP2001305503A (en) * | 2000-04-24 | 2001-10-31 | Seiko Epson Corp | Inspection method of substrate for liquid crystal and inspection device |
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2004
- 2004-05-21 CN CNB2004100424645A patent/CN1318904C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1114548A (en) * | 1997-06-20 | 1999-01-22 | Iinuma Gauge Seisakusho:Kk | Inspection method for orientation film for liquid-crystal display element and manufacture of liquid-crystal display element |
| JPH11202333A (en) * | 1998-01-13 | 1999-07-30 | Canon Inc | Method and device for checking alignment layer and production of liquid crystal element |
| JP2001124686A (en) * | 1999-10-27 | 2001-05-11 | Seiko Epson Corp | Inspecting method for liquid crystal panel substrate and manufacturing method for liquid crystal panel |
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| CN1580908A (en) | 2005-02-16 |
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