CN107255875A - A kind of orientation detection method and orientation detection means - Google Patents
A kind of orientation detection method and orientation detection means Download PDFInfo
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- CN107255875A CN107255875A CN201710706180.9A CN201710706180A CN107255875A CN 107255875 A CN107255875 A CN 107255875A CN 201710706180 A CN201710706180 A CN 201710706180A CN 107255875 A CN107255875 A CN 107255875A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
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- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a kind of orientation detection method and orientation detection means, is related to display technology field, the wasting of resources not prompt enough, caused of the detection for solution in the prior art to the orientation level of alignment film, the problem of increasing production cost.The orientation detection method includes：When friction roller carries out friction matching to alignment film, the electrostatic field value of each sample area on the friction roller is gathered respectively in multiple sampling time points；The variable quantity of the electrostatic field produced according to same sample area on the friction roller in consecutive sampling times point correspondence, determines the sampling abnormal area on the friction roller；According to the sampling abnormal area on the friction roller, the friction matching parameter when friction roller carries out friction matching to alignment film is adjusted.The orientation detection method that the present invention is provided is used to be monitored the process of alignment of alignment film.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of orientation detection method and orientation detection means.
Background technology
In a liquid crystal display, orientation ability refers to the ability that alignment film makes liquid crystal molecule be arranged along a direction, orientation
Ability can be characterized by measuring the optical anisotropy value of the alignment film after friction, and optical anisotropy value is bigger, then matches somebody with somebody
It is stronger to ability, it is on the contrary then orientation ability is weaker.When the orientation ability of alignment film is weaker, the arrangement of liquid crystal molecule easily by
The influence of the transverse electric field produced in liquid crystal display by electrode wiring, and the substrate segment produced when making liquid crystal display
The influence of difference, and the pre-tilt angle that these influences are easily caused liquid crystal molecule deviates desired value, makes the arrangement of liquid crystal molecule uneven
One, influence the display effect of liquid crystal display.
Because friction matching process is a kind of microcosmic process, in the process rubbed using friction roller to alignment film
In, it is impossible to the effective monitoring to orientation level is realized, is usually to complete with backward, in follow-up inspection in the prior art therefore
Survey and orientation level is detected in device, but this detection is carried out after process of alignment is completed, when in subsequent detection
When detecting abnormal in device, there is substantial amounts of product orientation to complete, therefore, in the prior art in the presence of due to alignment film
The detection of orientation level is not prompt enough, the caused wasting of resources, the problem of increasing production cost.
The content of the invention
It is an object of the invention to provide a kind of orientation detection method and orientation detection means, for solving in the prior art
The problem of detection to the orientation level of the alignment film wasting of resources not prompt enough, caused, increase production cost.
To achieve these goals, the present invention provides following technical scheme：
The first aspect of the present invention provides a kind of orientation detection method, including：
When friction roller carries out friction matching to alignment film, gathered respectively on the friction roller in multiple sampling time points
The electrostatic field value of each sample area；
The variable quantity of the electrostatic field produced according to same sample area on the friction roller in consecutive sampling times point correspondence,
Determine the sampling abnormal area on the friction roller；
According to the sampling abnormal area on the friction roller, adjust when the friction roller carries out friction matching to alignment film
Friction matching parameter.
Further, it is described when friction roller carries out friction matching to alignment film, gathered respectively in multiple sampling time points
The electrostatic field value of each sample area on the friction roller, including：
According to the size of the alignment film, the multiple sampling time point is set；
The friction roller is divided into multiple sample areas；
In each sampling time point, the electrostatic field value that each sample area correspondence is produced is gathered.
Further, in each sampling time point, after gathering the corresponding electrostatic field value of each sample area,
The orientation detection method also includes：
The electrostatic field value of collection is compared with default electrostatic field threshold value；
When the electrostatic field value of any collection is more than the default electrostatic field threshold value, the friction roller is controlled to stop to orientation
Film friction matching, to check the friction roller.
Further, it is described that the quiet of generation is corresponded in consecutive sampling times point according to same sample area on the friction roller
The variable quantity of electric field, determines the sampling abnormal area on the friction roller, including：
By same sample area on the friction roller consecutive sampling times point correspondence produce electrostatic field variable quantity with
Default change standard value is compared；
By the sample area corresponding with the variable quantity of the electrostatic field more than the default change standard value, it is defined as
Sampling abnormal area on the friction roller.
Further, the friction matching parameter when the regulation friction roller carries out friction matching to alignment film it
Afterwards, the orientation detection method also includes：
Calculated according to the electrostatic field value of collection in each sampling time point, the friction roller carries out friction to alignment film and matched somebody with somebody
Xiang Shi, the homogeneous angle value of early warning of the electrostatic field of generation；
The homogeneous angle value of early warning of the multiple sampling time point is compared with the homogeneous angle value of preset standard；
When any homogeneous angle value of early warning angle value homogeneous less than the preset standard, the friction roller pair is adjusted again
Alignment film carries out friction matching parameter during friction matching.
Based on the technical scheme of above-mentioned orientation detection method, the second aspect of the present invention provides a kind of orientation detection means,
Including：
Electrostatic collecting unit, for when friction roller carries out friction matching to alignment film, in multiple sampling time points difference
Gather the electrostatic field value of each sample area on the friction roller；
The integrated treatment unit being connected with the electrostatic collecting unit, for according to same sample area on the friction roller
The variable quantity of the electrostatic field produced in consecutive sampling times point correspondence, determines the sampling abnormal area on the friction roller；
It is connected with the integrated treatment unit, and the adjustment unit being connected with the friction roller, for according to the friction
Sampling abnormal area on roller, adjusts the friction matching parameter when friction roller carries out friction matching to alignment film.
Further, the electrostatic collecting unit includes：Positioned at friction roller top and biography synchronous with the friction roller
Dynamic sensor array, the sample region on each sensor correspondence friction roller that the sensor array includes
Domain, and electrostatic field value of each the described sensor for gathering correspondence sample area.
Further, the electrostatic collecting unit includes：
Subelement is configured, for the size according to the alignment film, the multiple sampling time point is set；
The dispensing unit, is additionally operable to the friction roller being divided into multiple sample areas；
The collection subelement being connected with the configuration subelement, in each sampling time point, collection
The electrostatic field value that each sample area correspondence is produced.
Further, the integrated treatment unit includes：
With the comparing subunit that is connected of collection subelement, for by the electrostatic field value of collection and default electrostatic field threshold value
It is compared；
The control subelement being connected with the comparing subunit, for being more than described preset when the electrostatic field value of any collection
During electrostatic field threshold value, the friction roller is controlled to stop to alignment film friction matching, to check the friction roller.
Further, the comparing subunit, is additionally operable to same sample area on the friction roller in neighbouring sample
Between put the variable quantity for the electrostatic field that correspondence is produced and the default standard value that changes is compared；
The integrated treatment unit also includes：The determination subelement being connected with the comparing subunit, for will with more than
The corresponding sample area of variable quantity of the electrostatic field of the default change standard value, is defined as adopting on the friction roller
Sample abnormal area.
Further, the integrated treatment unit also includes：
Early warning uniformity computation subunit, for being calculated according to the electrostatic field value of collection in each sampling time point, institute
When stating friction roller to alignment film progress friction matching, the homogeneous angle value of early warning of the electrostatic field of generation；
The comparing subunit, is additionally operable to the homogeneous angle value of early warning and preset standard of the multiple sampling time point is homogeneous
Angle value compares；
The adjustment unit, is additionally operable to when any homogeneous angle value of early warning angle value homogeneous less than the preset standard,
The friction matching parameter when friction roller carries out friction matching to alignment film is adjusted again.
The orientation detection scheme that the present invention is provided can be when friction roller carries out friction matching to alignment film, in multiple samplings
Time point, the electrostatic field value that each sample area correspondence on collection friction roller is produced in real time, and can be according to collecting
Electrostatic field value, obtains the variable quantity of the electrostatic field that same sample area is produced in consecutive sampling times point correspondence on friction roller, base
In the variable quantity of obtained electrostatic field, friction roller is determined in real time during to alignment film friction matching, in each period, friction
The variation tendency for the electrostatic field that each sample area correspondence on roller is produced.Then according to the variation tendency of the electrostatic field of determination,
The sampling abnormal area on friction roller is determined in real time, for each sampling abnormal area, to friction of the friction roller in friction matching
Orientation parameter is adjusted in real time.Therefore, the orientation detection method that the present invention is provided, can rub in friction roller to alignment film
When wiping orientation, orientation situation of the friction roller to alignment film is monitored in real time, can be in time to friction roller when there is abnormal problem
It is adjusted, reduces the wasting of resources, production cost has been saved to greatest extent.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Liquid crystal distribution schematic diagram when Fig. 1 a have stronger orientation ability for alignment film in the prior art；
Liquid crystal distribution schematic diagram when Fig. 1 b have weaker orientation ability for alignment film in the prior art；
The schematic diagram for the transverse electric field influence liquid crystal distribution that Fig. 2 produces for electrode wiring in the prior art；
Fig. 3 is the first pass figure of orientation detection method provided in an embodiment of the present invention；
Fig. 4 is the second flow chart of orientation detection method provided in an embodiment of the present invention；
Fig. 5 is provided in an embodiment of the present invention in the corresponding trajectory coordinates figure of sampling time each sample area of point；
Fig. 6 is the first structure schematic diagram of orientation detection means provided in an embodiment of the present invention；
Fig. 7 is the second structural representation of orientation detection means provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram that sensor array provided in an embodiment of the present invention is arranged in orientation equipment.
Reference：
A- liquid crystal molecules are in normal resting state, and B- liquid crystal molecules are in unusual distributions,
1- pixel electrodes, 2- signal electrodes,
3- alignment films, 4- liquid crystal molecules,
5- power lines, 6- friction rollers,
7- electrostatic collecting units, 71- sensor arrays,
72- signal transmssion lines, 73- signal processing units,
74- sensor motion brackets, 8- integrated treatment units,
9- adjustment units, 10- substrates.
Embodiment
In order to further illustrate orientation detection method provided in an embodiment of the present invention and orientation detection means, with reference to saying
Bright book accompanying drawing is described in detail.
As stated in the Background Art, the power of the orientation ability of alignment film can influence the row of liquid crystal molecule in liquid crystal display
Row uniformity, when the orientation ability of alignment film is stronger, as shown in Figure 1a, alignment film enables to liquid crystal molecule 4 according to certain
Pre-tilt angle arrangement, make liquid crystal molecule be in normal resting state A, when the orientation ability of alignment film is weaker, as shown in Figure 1 b, point
The transverse electric field that liquid crystal molecule 4 of the cloth on alignment film is easily produced by substrate segment difference in liquid crystal display and by electrode wiring
Influence, cause liquid crystal alignment pre-tilt angle difference or reversion, make liquid crystal molecule be in unusual distributions B.
Specifically, aforesaid substrate segment difference refers to array base palte or color membrane substrates because surface formed by each road preparation technology is tied
The rugged state of structure, such as after each dry etching and wet etching, the surface texture formed by subregion is etched away
It is uneven, this rugged state of surface texture is likely to result in difference or the reversion of the pre-tilt angle of the orientation of liquid crystal molecule 4,
It is bad so as to cause liquid crystal display to show.As shown in Fig. 2 the transverse electric field that above-mentioned electrode wiring is produced refers to the He of pixel electrode 1
Electric field in the horizontal direction produced between signal electrode 2, scan electrode is (as the power line 5 in Fig. 2 is produced in the horizontal direction
Horizontal electric field component), the electric field in this horizontal direction is likely to result in the orientation of liquid crystal molecule 4 that is distributed on alignment film 3
The reversion of pre-tilt angle, it is in unusual distributions B to make liquid crystal molecule, in turn results in liquid crystal display and shows bad.
Due to being usually to complete, with backward, to detect orientation level in follow-up detection means in the prior art
, and this detection carries out after process of alignment is completed, and this is allowed for when detecting exception in subsequent detection device
When, there is substantial amounts of product orientation to complete, the problem of result in the wasting of resources, increase production cost.
Presence based on above mentioned problem, the present inventor it has been investigated that, using friction roller to alignment film carry out
During friction matching, rubbed between the friction cloth and alignment film on friction roller, electrostatic field can be produced, work as friction roller
During orientation normal to alignment film, uniform frictional force is produced between friction cloth and alignment film, so that uniform electrostatic field is produced, and
When friction roller is abnormal to the orientation of alignment film, anomalous variation occurs for the frictional force between friction cloth and alignment film, and then causes
Anomalous variation occurs for the electrostatic field of generation, when therefore, it can carry out friction matching to alignment film by measuring friction roller, generation
The change of electrostatic field, to judge that friction roller, with the presence or absence of abnormal, is matched somebody with somebody to the friction process of alignment film so as to realize to alignment film
Effectively monitored in real time to effect.
As shown in figure 3, the embodiment of the present invention provides a kind of orientation detection method, the orientation detection method includes following step
Suddenly：
Step 101, when friction roller carries out friction matching to alignment film, friction roller is gathered respectively in multiple sampling time points
On each sample area electrostatic field value；
Specifically, when carrying out friction matching to alignment film using friction roller, friction roller is rolled to from one end of alignment film
The other end is realized to the overall orientation of alignment film.During whole friction matching, multiple sampling time points are set, and are rubbing
Wipe and multiple sample areas are set on roller, each sample area correspondence gathered respectively on friction roller in multiple sampling time points is produced
Raw electrostatic field value.
Step 102, the change of the electrostatic field produced according to same sample area on friction roller in consecutive sampling times point correspondence
Change amount, determines the sampling abnormal area on friction roller；
In more detail, same sample area on friction roller is made the difference in the electrostatic field that consecutive sampling times point correspondence is produced
Value is calculated, and the variable quantity of the electrostatic field that same sample area is produced in consecutive sampling times point correspondence on friction roller is obtained, to meter
The variable quantity of obtained whole electrostatic fields is judged, with the variable quantity for the electrostatic field for determining exception, by the electrostatic with exception
The corresponding sample area of variable quantity, be defined as the sampling abnormal area on friction roller.
Step 103, according to the sampling abnormal area on friction roller, when regulation friction roller is to alignment film progress friction matching
Friction matching parameter.
Furthermore, when it is determined that after sampling abnormal area on friction roller, you can determine the defect area on friction roller
Domain, can be according to the defect situation of the defect area, and friction when specific regulation friction roller carries out friction matching to alignment film is matched somebody with somebody
To parameter, the friction matching parameter may include：Intrusion, rotary speed, the transfer rate of friction roller and the friction of friction roller
Cloth hairy state of friction cloth etc. on roller.It is worth noting that, the main points of the orientation ability of enhancing alignment film are enhancing frictional strengths
And rubbing intensity, and strengthen frictional strength and rubbing intensity can realize control by adjusting above-mentioned friction matching parameter.
It can be seen from the specific implementation process of above-mentioned orientation detection method, orientation detection method provided in an embodiment of the present invention
When friction roller carries out friction matching to alignment film, in multiple sampling time points, each on friction roller can be gathered in real time
The electrostatic field value that sample area correspondence is produced, and same sample region on friction roller can be obtained according to the electrostatic field value collected
The variable quantity for the electrostatic field that domain is produced in consecutive sampling times point correspondence, based on the variable quantity of obtained electrostatic field, is determined in real time
Friction roller is during to alignment film friction matching, and it is quiet that each sample area correspondence on each period, friction roller is produced
The variation tendency of electric field.Then according to the variation tendency of the electrostatic field of determination, the sampling abnormal area on friction roller is determined in real time,
For each sampling abnormal area, friction matching parameter of the friction roller in friction matching is adjusted in real time.Therefore, it is of the invention
The orientation detection method that embodiment is provided, can monitor friction roller in real time when friction roller carries out friction matching to alignment film
To the orientation situation of alignment film, when there is abnormal problem, friction roller can be adjusted in time, reduce the wasting of resources,
Production cost has been saved to greatest extent.
The step 101 that above-described embodiment is provided, when friction roller carries out friction matching to alignment film, in multiple sampling times
Point gathers the electrostatic field value of each sample area on friction roller respectively, may particularly include following steps：
Step 1011, according to the size of alignment film, multiple sampling time points are set；
Specifically, so that length direction of the friction roller along alignment film carries out orientation to alignment film as an example, defining to alignment film
The whole orientation time is that (i.e. length direction of the friction roller along alignment film, time other end used time is rolled to from one end of alignment film to T
For T), then sampling time point be set according to Electrostatic collection limit value, and Electrostatic collection limit value can be according to the reality of alignment film
Border size is set, and optionally, Electrostatic collection limit value is arranged within 15%T, for example：Electrostatic collection limit value is set to
9%T, so when carrying out orientation to an alignment film, just sets a sampled point so as to one every 9%T period
When individual alignment film carries out orientation, the sampling time point of more than 10 can be set, it is ensured that to the monitoring of process of alignment more
Accurately.
It for details, reference can be made to such as table 1 below, each sampling time point in table 1, is to be set according to Electrostatic collection limit value,
For example：Between first sampling time point (0.4%T) and second sampling time point (0.7%T), the Electrostatic collection of selection
Limit value is 0.3%T, between second sampling time point (0.7%T) and the 3rd sampling time point (8.5%T), is chosen
Electrostatic collection limit value be 1.5%T.
In addition, the change of the electrostatic field produced for same sample area on friction roller in consecutive sampling times point correspondence
Amount, is illustrated below, first sample region from table 1, it can be seen that on first sampling time point, correspondence friction roller
The electrostatic field value that domain is collected is 334V, first sample area institute on second sampling time point, correspondence friction roller
The electrostatic field value collected is 520V, accordingly, it is capable to access first sample area in first sampling time point and second
The variable quantity of electrostatic field between sampling time point is 186V.
Table 1
Step 1012, friction roller is divided into multiple sample areas；
Furthermore, the sample area to friction roller can be evenly dividing according to the length of the friction roller of use, and
The Zone Full that the sample area divided is covered on friction roller, for example：Along the length direction of friction roller, in friction
11 sample areas are evenly dividing on roller (as shown in table 1, to correspond to each sampling time point, adopt respectively in 11 sample areas
Collect an electrostatic field value, that is, corresponded to each sampling time point and acquire 11 electrostatic field values), each sample area is right
A collection subelement is answered, each collection subelement gathers the electrostatic field produced by corresponding sample area.
Step 1013, in each sampling time point, the electrostatic field value that each sample area correspondence is produced is gathered；
In more detail, in each sampling time point of setting, each sample area on friction roller is gathered respectively and is being rubbed
The electrostatic field value that correspondence is produced in process of alignment.
According to the process of 1011~step 1013 of above-mentioned steps, gather every on friction roller respectively in multiple sampling time points
The electrostatic field value of one sample area so that each electrostatic field value that sampling is obtained, corresponds to a sampling time point and rubs
A sample area on roller is wiped, so when the electrostatic field value for determining that the electrostatic field value sampled is exception, or calculating are obtained
Electrostatic field variable quantity for abnormal variable quantity when, it becomes possible to accurately positioning and the abnormal electrostatic field value, or abnormal
Orientation abnormal area on the corresponding alignment film of variable quantity, and the sampling abnormal area on friction roller so that staff's energy
The position where abnormal area on enough faster locking friction rollers, and regulation is targetedly made in time.
In above-mentioned steps 1013, in each sampling time point, after gathering the corresponding electrostatic field value of each sample area, such as
Shown in Fig. 4, the orientation detection method that above-described embodiment is provided also includes：
Step 1014, the electrostatic field value of collection is compared with default electrostatic field threshold value；
Specifically, when gathering the electrostatic field that each pickup area correspondence is produced, can be by the electrostatic field value of collection with presetting
Electrostatic field threshold value is compared in real time, and whether the electrostatic field value gathered with real-time judge meets requirement.It is worth noting that, default
Electrostatic field threshold value is generally 150%E, and wherein E is produced standard in the case that friction roller carries out normal orientation to alignment film
Electrostatic field value, further, since in the case that friction roller carries out normal orientation to alignment film, in the different orientation periods, generation
Standard electrostatic value may be different, therefore standard electrostatic field value can be a standard electrostatic curvature of field line, corresponding actual use
In the default electrostatic field value compared, the curve can be chosen in the electrostatic field value corresponding to correspondence sampling time point.
Step 1015, when the electrostatic field value of any collection is more than default electrostatic field threshold value, control friction roller stop to
To film friction matching, to check friction roller；
In more detail, during the electrostatic field value of collection and default electrostatic field threshold value are compared, appoint when having
When the electrostatic field value of one collection is more than default electrostatic field threshold value, friction roller can be controlled to stop to alignment film friction matching, and it is right
Friction roller is checked.
In above-mentioned steps 1014 and step 1015, it can realize and real-time judge is carried out to the electrostatic field value of collection, with true
Whether the electrostatic field value collected surely meets requirement, when the electrostatic field value collected is unsatisfactory for requiring, can control to rub in time
Wipe roller to stop checking to alignment film friction matching, and to friction roller, the defect area production on friction roller is avoided well
Electrode on raw excessive electrostatic field value, the substrate of caused carrying alignment film is breakdown, the problem of wounded substrate.Moreover,
According to the specific sample mode of 1011~step 1013 of above-mentioned steps, when the electrostatic field value for having any collection is more than default electrostatic field
During threshold value, the orientation exceptions area being more than on the corresponding alignment film of electrostatic field value of default electrostatic field threshold value can be accurately positioned
Sampling abnormal area on domain, and friction roller so that follow-up inspection and regulation more precise and high efficiency to friction roller.
The step 102 that above-described embodiment is provided, according to same sample area on friction roller in consecutive sampling times point correspondence
The variable quantity of the electrostatic field of generation, determines the sampling abnormal area on friction roller, may particularly include following steps：
Step 1021, the change of the electrostatic field same sample area on friction roller produced in consecutive sampling times point correspondence
Amount is compared with default change standard value；
Furthermore, the electrostatic that same sample area is produced in consecutive sampling times point correspondence on friction roller is obtained
After the variable quantity of field, the variable quantity of the corresponding electrostatic field of each sample area on friction roller is compared with default change standard value
Compared with wherein default change standard value is generally 50%E, wherein E is institute in the case that friction roller carries out normal orientation to alignment film
The standard electrostatic value of generation.
Step 1022, by the sample area corresponding with the variable quantity of the electrostatic field more than default change standard value, it is determined that
For the sampling abnormal area on friction roller.
Specifically, after the variable quantity of obtained electrostatic field is compared with default change standard value, when there is electrostatic field
Variable quantity when being more than default change standard value, by adopting corresponding to variable quantity of the electrostatic field for being more than default change standard value
Sample region, is defined as the sampling abnormal area on friction roller.In order to more intuitively show the variable quantity of obtained electrostatic field with it is pre-
If changing the relation of standard value, when actually comparing, the comparative result of the variable quantity of each electrostatic field can be corresponded to, phase is drawn
The trajectory coordinates figure answered, for example：Each sampling time point of correspondence, draws the track of each sample area on a correspondence friction roller
Coordinate diagram, the corresponding position coordinates of each sample area is set to by the abscissa of the trajectory coordinates figure, by the vertical of the trajectory coordinates figure
Coordinate is set to electrostatic field value, and the track of the sample area of the variable quantity of the normal electrostatic field of correspondence is plotted as into thicker line
Bar, thinner lines are plotted as by the trajectory diagram of the sample area of the variable quantity of the abnormal electrostatic field of correspondence.
Referring to Fig. 5, be included in the variable quantity of the corresponding electrostatic field of each sample area of a certain sampling time point in Fig. 5, it is quiet
Electric field value and trajectory schematic diagram, it can be seen that in each sample area of correspondence, when the corresponding electrostatic field in the region from Fig. 5
Variable quantity it is larger, and during more than default change standard value, to should the track of sample area be plotted as thicker lines, phase
Anti- is then plotted as thinner lines, and this trajectory coordinates figure is more intuitively reflected in the electrostatic field corresponding to each sample area
Variable quantity whether meet requirement, and, each sample area whether be sampling abnormal area.
In above-mentioned steps 103, according to the sampling abnormal area on friction roller, alignment film is rubbed in regulation friction roller
After friction matching parameter during orientation, the orientation detection method that above-described embodiment is provided also includes：
Step 104, calculated according to the electrostatic field value of collection in each sampling time point, friction roller rubs to alignment film
When wiping orientation, the homogeneous angle value of early warning of the electrostatic field of generation；
Specifically, the homogeneous angle value A of early warning of each corresponding electrostatic field of sampling time point calculation is as follows：
Will be in the maximum E in each sampling time point, the electrostatic field value of each sample area correspondence collectionmaxAnd minimum
Value EminIt is updated in formula (1), calculates the homogeneous angle value of early warning for the electrostatic field for obtaining the corresponding sampling time point.
Step 105, the homogeneous angle value of early warning of multiple sampling time points is compared with the homogeneous angle value of preset standard；
In more detail, during friction roller carries out friction matching to alignment film, gathered in real time in each sampling time point
The corresponding electrostatic field value of each sample area, and the homogeneous angle value of early warning of the corresponding electrostatic field of each sampling time point is calculated in real time, will
The obtained homogeneous angle value of early warning is compared in real time with the homogeneous angle value of preset standard.It should be noted that preset standard uniformity
Value is chosen as 50%.
Step 106, when the homogeneous angle value of any early warning angle value homogeneous less than preset standard, friction roller is adjusted again to orientation
Film carries out friction matching parameter during friction matching.
Furthermore, when the homogeneous angle value of obtained early warning is compared in real time with the homogeneous angle value of preset standard,
When any homogeneous angle value of early warning of appearance angle value homogeneous less than preset standard, friction roller can be adjusted again and alignment film is rubbed
Friction matching parameter during orientation is wiped, to cause alignment film that there is more preferable orientation ability.And during comparing in real time, when
When the homogeneous angle value of early warning compared is more than or equal to preset standard value, the electrostatic field value that can proceed with next sampling time point is adopted
Collection operation.
Referring to Fig. 6, the embodiment of the present invention additionally provides a kind of orientation detection means, including：
Electrostatic collecting unit 7, for when friction roller 6 carries out friction matching to alignment film, in multiple sampling time points minute
The electrostatic field value of each sample area that Cai Ji be on friction roller 6.
The integrated treatment unit 8 being connected with electrostatic collecting unit 7, for according to same sample area on friction roller 6 in phase
The variable quantity for the electrostatic field that adjacent sampling time point correspondence is produced, determines the sampling abnormal area on friction roller 6.
It is connected with integrated treatment unit 8, and the adjustment unit 9 being connected with friction roller 6, for according to adopting on friction roller 6
Sample abnormal area, regulation friction roller 6 carries out friction matching parameter during friction matching to alignment film.
Orientation detection means provided in an embodiment of the present invention includes electrostatic collecting unit 7 and integrated treatment unit 8, wherein quiet
Electric collecting unit 7 can be when friction roller 6 carries out friction matching to alignment film, in multiple sampling time points, collection friction in real time
The electrostatic field value that each sample area correspondence on roller 6 is produced；Integrated treatment unit 8 can be according to the electrostatic field collected
Value, obtains the variable quantity of the electrostatic field that same sample area is produced in consecutive sampling times point correspondence on friction roller 6, and is based on
The variable quantity of the electrostatic field arrived, determines friction roller 6 during to alignment film friction matching, in each period, friction roller 6 in real time
On each sample area correspondence produce electrostatic field variation tendency；Then integrated treatment unit 8 can also be according to determination
The variation tendency of electrostatic field, determines the sampling abnormal area on friction roller 6 in real time；Adjustment unit 9 can be abnormal for each sampling
Region, is adjusted in real time to friction matching parameter of the friction roller 6 in friction matching.Therefore, it is provided in an embodiment of the present invention
Orientation detection means, can monitor friction roller 6 in real time to alignment film when friction roller 6 carries out friction matching to alignment film
Orientation situation, when there is abnormal problem, can be adjusted to friction roller 6, reduce the wasting of resources, to greatest extent in time
Production cost is saved.
As shown in Figure 7 and Figure 8, the electrostatic collecting unit 7 that above-described embodiment is provided includes：Positioned at the top of friction roller 6 and with
On the sensor array 71 of the Synchronous Transmission of friction roller 6, each sensor correspondence friction roller 6 that sensor array 71 includes
One sample area, and electrostatic field value of each sensor for gathering correspondence sample area.
Specifically, sensor array 71 can be connected with signal processing unit 73 by signal transmssion line 72, sensor array
The electrostatic field value collected through signal transmssion line 72 can be transferred to signal processing unit 73,73 pairs of signal processing unit by row 71
The electrostatic field value received is carried out after signal transacting, and the electrostatic field value after processing is transmitted to integrated treatment unit 8.Need explanation
, above-mentioned signal processing unit 73 is chosen as signal amplifier and traffic filter, through signal amplifier and traffic filter
Electrostatic field value after processing is more accurate so that judgement of the follow-up integrated treatment unit 8 to electrostatic field value is more accurate.
In process of alignment of the application above-mentioned orientation detection means detection friction roller 6 to alignment film, concrete application mode is such as
Under：The friction roller 6 for wrapping friction cloth is fixed on the portal frame of the delivery unit of orientation equipment by roller folder first, by passing
Intrusion, rotating speed and the friction relative to the base station in orientation equipment of friction roller 6 when sending the button setting friction matching of unit
Sensor array 71, is then fixed on the delivery unit of orientation equipment by speed by sensor motion bracket 74, and is caused
Sensor array 71 can be located at the top of friction roller 6, realize and the Synchronous Transmission of friction roller 6.When friction roller 6 rubs to alignment film
When wiping orientation, friction roller 6 can carry out friction matching according to the intrusion of setting, rotating speed and friction velocity to alignment film, pass
Sensor array 71 follows the Synchronous Transmission of friction roller 6, and carries out electrostatic to each sample area on friction roller 6 according to sampling time point
The collection of field value.
In the orientation detection means that above-described embodiment is provided, electrostatic collecting unit 7 can include：Configuration being connected is single
Member and collection subelement, wherein, configuration subelement is used for the size according to alignment film, sets multiple sampling time points；And match somebody with somebody
Put subelement and be additionally operable to 6 points of friction roller be multiple sample areas；Subelement is gathered, in each sampling time point, adopting
Collect the electrostatic field value that each sample area correspondence is produced.It should be noted that above-mentioned collection subelement is chosen as ultrasonic electrostatic biography
Sensor array or infrared ray electrostatic sensor array etc..
The electrostatic collecting unit 7 of said structure, each on friction roller 6 can be gathered respectively in multiple sampling time points
The electrostatic field value of sample area so that each electrostatic field value that sampling is obtained, corresponds to a sampling time point and friction roller 6
On a sample area, so when determining that the electrostatic field value that samples is abnormal electrostatic field value, or calculate obtain quiet
When the variable quantity of electric field is abnormal variable quantity, it becomes possible to accurately positioning and the abnormal electrostatic field value, or abnormal change
Measure the orientation abnormal area on corresponding alignment film, and the sampling abnormal area on friction roller 6 so that staff can be more
The quickly position where the abnormal area on locking friction roller 6, and targetedly make regulation in time.
The integrated treatment unit 8 that above-described embodiment is provided includes：With the comparing subunit that is connected of collection subelement and with than
The control subelement connected compared with subelement, wherein comparing subunit are used to enter the electrostatic field value of collection with default electrostatic field threshold value
Row compares；Subelement is controlled to be used for when the electrostatic field value of any collection is more than default electrostatic field threshold value, control friction roller 6 stops
To alignment film friction matching, to check friction roller 6.
Comparing subunit in the integrated treatment unit 8 of said structure can be realized to be carried out in real time to the electrostatic field value of collection
Judge, to determine whether the electrostatic field value collected meets requirement, control subelement can be discontented in the electrostatic field value collected
When foot is required, control friction roller 6 stops to alignment film friction matching in time, to check friction roller 6, therefore said structure
Integrated treatment unit 8 avoid defect area on friction roller 6 well and produce excessive electrostatic field value, caused carrying
Electrode on the substrate 10 of alignment film is breakdown, the problem of wounded substrate 10.
Above-mentioned comparing subunit is additionally operable to produce same sample area on friction roller 6 in consecutive sampling times point correspondence
The variable quantity of electrostatic field is compared with default change standard value；Above-mentioned integrated treatment unit 8 also includes connecting with comparing subunit
The determination subelement connect, the determination subelement is used for will be corresponding with the variable quantity of the electrostatic field more than default change standard value
Sample area, is defined as the sampling abnormal area on friction roller 6.
Comparing subunit is after the variable quantity of obtained electrostatic field is compared with default change standard value, when there is electrostatic
When the variable quantity of field is more than default change standard value, determination subelement can be by this more than the electrostatic field for presetting change standard value
Sample area corresponding to variable quantity, is defined as the sampling abnormal area on friction roller 6.And in order to more intuitively show what is obtained
The variable quantity of electrostatic field and the relation of default change standard value, can be by the variable quantity of electrostatic field with presetting when actually comparing
The relation of change standard value is reduced to friction track of the friction roller 6 on alignment film, the i.e. variable quantity for each electrostatic field
Comparative result, draw corresponding trajectory coordinates figure, and the display subelement (display) included by integrated treatment unit 8 enters
Row display, specifically, when some sample area is sampling abnormal area on friction roller 6, the electrostatic field of the sampling abnormal area
Value and friction track are illustrated as exception in normal region, for example, friction track is shown as into certain border and the area of width
Domain (i.e. thicker lines).
The integrated treatment unit 8 that above-described embodiment is provided also includes：
Early warning uniformity computation subunit, for being calculated according to the electrostatic field value of collection in each sampling time point, rubs
When wiping roller 6 to alignment film progress friction matching, the homogeneous angle value of early warning of the electrostatic field of generation.
Comparing subunit, is additionally operable to the homogeneous angle value of early warning of multiple sampling time points and the homogeneous angle value ratio of preset standard
Compared with.
Adjustment unit 9, is additionally operable to when the homogeneous angle value of any early warning angle value homogeneous less than preset standard, regulation friction again
Roller 6 carries out friction matching parameter during friction matching to alignment film.
Above-mentioned early warning uniformity computation subunit can calculate obtain friction roller 6 to alignment film carry out friction matching when, production
The homogeneous angle value of early warning of raw electrostatic field, comparing subunit can be by the homogeneous angle value of obtained early warning and the homogeneous angle value of preset standard
Compared in real time, when any homogeneous angle value of early warning of appearance angle value homogeneous less than preset standard, adjustment unit 9 can be adjusted again
Friction matching parameter when friction roller 6 carries out friction matching to alignment film is saved, to cause alignment film that there is more preferable orientation ability.
It should be noted that above-mentioned integrated treatment unit 8 is chosen as computer, it is all kinds of included by integrated treatment subelement
Subelement can correspond to each functional unit in computer.
In addition, each embodiment in this specification is described by the way of progressive, identical phase between each embodiment
As part mutually referring to what each embodiment was stressed is the difference with other embodiment.In the present invention
For product embodiments, because the specific work process of each unit included by it is substantially similar to embodiment of the method, institute
To describe fairly simple, referring to the explanation of embodiment of the method part in place of correlation.
In the description of above-mentioned embodiment, specific features, structure, material or feature can be in any one or many
Combined in an appropriate manner in individual embodiment or example.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of orientation detection method, it is characterised in that including：
When friction roller carries out friction matching to alignment film, gather each on the friction roller respectively in multiple sampling time points
The electrostatic field value of individual sample area；
The variable quantity of the electrostatic field produced according to same sample area on the friction roller in consecutive sampling times point correspondence, it is determined that
Sampling abnormal area on the friction roller；
According to the sampling abnormal area on the friction roller, the friction when friction roller carries out friction matching to alignment film is adjusted
Orientation parameter.
2. orientation detection method according to claim 1, it is characterised in that described to be rubbed in friction roller to alignment film
During orientation, the electrostatic field value of each sample area on the friction roller is gathered respectively in multiple sampling time points, including：
According to the size of the alignment film, the multiple sampling time point is set；
The friction roller is divided into multiple sample areas；
In each sampling time point, the electrostatic field value that each sample area correspondence is produced is gathered.
3. orientation detection method according to claim 2, it is characterised in that in each sampling time point, collection
After the corresponding electrostatic field value of each sample area, the orientation detection method also includes：
The electrostatic field value of collection is compared with default electrostatic field threshold value；
When the electrostatic field value of any collection is more than the default electrostatic field threshold value, the friction roller is controlled to stop rubbing to alignment film
Orientation is wiped, to check the friction roller.
4. orientation detection method according to claim 1, it is characterised in that described according to same sampling on the friction roller
The variable quantity for the electrostatic field that region is produced in consecutive sampling times point correspondence, determines the sampling abnormal area on the friction roller,
Including：
The variable quantity for the electrostatic field that same sample area on the friction roller is produced in consecutive sampling times point correspondence is with presetting
Change standard value is compared；
By the sample area corresponding with the variable quantity of the electrostatic field more than the default change standard value, it is defined as described
Sampling abnormal area on friction roller.
5. orientation detection method according to claims 1 to 4, it is characterised in that the regulation friction roller to
After friction matching parameter when carrying out from friction matching to film, the orientation detection method also includes：
Calculated according to the electrostatic field value of collection in each sampling time point, the friction roller carries out friction matching to alignment film
When, the homogeneous angle value of early warning of the electrostatic field of generation；
The homogeneous angle value of early warning of the multiple sampling time point is compared with the homogeneous angle value of preset standard；
When any homogeneous angle value of early warning angle value homogeneous less than the preset standard, the friction roller is adjusted again to orientation
Film carries out friction matching parameter during friction matching.
6. a kind of orientation detection means, it is characterised in that including：
Electrostatic collecting unit, for when friction roller carries out friction matching to alignment film, being gathered respectively in multiple sampling time points
The electrostatic field value of each sample area on the friction roller；
The integrated treatment unit being connected with the electrostatic collecting unit, for according to same sample area on the friction roller in phase
The variable quantity for the electrostatic field that adjacent sampling time point correspondence is produced, determines the sampling abnormal area on the friction roller；
It is connected with the integrated treatment unit, and the adjustment unit being connected with the friction roller, for according to the friction roller
Sampling abnormal area, adjust the friction matching parameter when friction roller carries out friction matching to alignment film.
7. orientation detection means according to claim 6, it is characterised in that the electrostatic collecting unit includes：Positioned at institute
State above friction roller and with the sensor array of the friction roller Synchronous Transmission, the sensor array include each
A sample area on the sensor correspondence friction roller, and each described sensor is for gathering correspondence sample area
Electrostatic field value.
8. orientation detection means according to claim 6, it is characterised in that the electrostatic collecting unit includes：
Subelement is configured, for the size according to the alignment film, the multiple sampling time point is set；
The dispensing unit, is additionally operable to the friction roller being divided into multiple sample areas；
The collection subelement being connected with the configuration subelement, in each sampling time point, gathering each institute
State the electrostatic field value that sample area correspondence is produced.
9. the orientation detection means according to claim 7 or 8, it is characterised in that the integrated treatment unit includes：
The comparing subunit being connected with the collection subelement, for the electrostatic field value of collection and default electrostatic field threshold value to be carried out
Compare；
The control subelement being connected with the comparing subunit, is more than the default electrostatic for the electrostatic field value when any collection
During the threshold value of field, the friction roller is controlled to stop to alignment film friction matching, to check the friction roller.
10. orientation detection means according to claim 9, it is characterised in that
The comparing subunit, is additionally operable to produce same sample area on the friction roller in consecutive sampling times point correspondence
The variable quantity of electrostatic field is compared with default change standard value；
The integrated treatment unit also includes：
The determination subelement being connected with the comparing subunit, for by with more than it is described it is default change standard value the electrostatic
The corresponding sample area of variable quantity, be defined as the sampling abnormal area on the friction roller.
11. orientation detection means according to claim 9, it is characterised in that the integrated treatment unit also includes：
Early warning uniformity computation subunit, it is described to rub for being calculated according to the electrostatic field value of collection in each sampling time point
When wiping roller to alignment film progress friction matching, the homogeneous angle value of early warning of the electrostatic field of generation；
The comparing subunit, is additionally operable to the homogeneous angle value of early warning of the multiple sampling time point and the homogeneous angle value of preset standard
Compare；
The adjustment unit, is additionally operable to when any homogeneous angle value of early warning angle value homogeneous less than the preset standard, again
Adjust the friction matching parameter when friction roller carries out friction matching to alignment film.
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| CN201710706180.9A CN107255875B (en) | 2017-08-17 | 2017-08-17 | Alignment detection method and alignment detection device |
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| CN107255875B (en) | 2020-04-24 |
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