CN103383499B - Detect the device of liquid crystal coating state and the liquid crystal coating with the device - Google Patents
Detect the device of liquid crystal coating state and the liquid crystal coating with the device Download PDFInfo
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- CN103383499B CN103383499B CN201210254774.8A CN201210254774A CN103383499B CN 103383499 B CN103383499 B CN 103383499B CN 201210254774 A CN201210254774 A CN 201210254774A CN 103383499 B CN103383499 B CN 103383499B
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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
- G02F1/1313—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 specially adapted for a particular application
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G02F1/1341—Filling or closing of cells
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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
- G02F2203/00—Function characteristic
- G02F2203/69—Arrangements or methods for testing or calibrating a device
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The present invention discloses a kind of device of liquid crystal coating state for being used to detect the substrate for being coated with liquid crystal thereon and a kind of liquid crystal coating with the device.Coating condition checkout gear includes the light source with the first polarization plates and the detection camera with the second polarization plates.The light sent from light source is coated with the substrate of liquid crystal through the first polarization plates to be radiated, and the light that substrate or liquid crystal reflect or reflected incides detection camera through the second polarization plates.
Description
Technical field
It is used to detect the device of liquid crystal coating state and a kind of liquid crystal with the device this patent disclosure relates generally to a kind of
Coating machine.A kind of more particularly it relates to dress for the liquid crystal coating state for being used to detect the substrate for being coated with liquid crystal thereon
Put and a kind of liquid crystal coating with the device.
Background technology
Liquid crystal display (LCD) is the display using the light modulation properties of liquid crystal.In general, by by liquid crystal stratification
Two substrates are made between the substrate with chromatic filter layer and the substrate for being disposed with drive device and then to be bonded to each other to make
Make LCD.
Liquid crystal coating is the device being coated on liquid crystal in LCD manufacturing processes on substrate.Liquid crystal coating is configured to
Liquid crystal is coated on substrate in the form of drop or particulate.
The amount of liquid crystal being coated on by liquid crystal coating on substrate must be controlled in assigned error scope as precisely as possible
It is interior.Therefore, Korean Patent No.964949 proposes a kind of method to liquid crystal droplet quantity accurate counting.According to above patent, have
Liquid crystal droplet quantity may be counted in a reliable fashion.
Meanwhile the inventors found that it is necessary to detect the liquid crystal coating state of substrate.This needs detection inaccurate
The situation of coating of liquid crystalline, situation that such as some liquid crystal droplets are not discharged normally in liquid crystal coating process or not according to given
Liquid crystal coated pattern coating of liquid crystalline situation.
The content of the invention
Therefore, the problem of present invention produces in the prior art for more than, and it is an object of the invention to provide one kind
The device that liquid crystal is coated with state is detected by obtaining the image for the substrate for being coated with liquid crystal.
It is a further object of the present invention to provide a kind of liquid crystal coating for the device for having and being used to detect liquid crystal coating state.
In order to realize the above object the present invention provides a kind of device for being used to detect liquid crystal coating state, described device bag
Include：Luminous light source；The first polarization plates for being arranged on light source and being coated with thereon between the substrate of liquid crystal, first polarization plates
Make from the light of radiation of light source optionally through；Second polarization plates, second polarization plates make through after the first polarization plates by
Substrate or liquid crystal reflection or the light of refraction optionally through；And detection camera, the detection camera are received through the
The light of two polarization plates, and convert the light to electric signal.
It can be further comprised according to the coating condition checkout gear of the present invention：Main frame；Saddle, the saddle are arranged on master
Sentence supporting substrate in precalculated position on the top of framework；And support frame, the support frame are arranged on the upper of main frame
Pre-position in portion, light source and detection camera are installed on support frame.
According to one embodiment, coating condition checkout gear can further comprise tumbler, and the tumbler is used for
Adjust the polarization direction of the first polarization plates or be arranged on the polarization direction for detecting the second polarization plates on camera.
Described device can further comprise control unit, and described control unit analyzes the image obtained from detection camera,
And the rotational angle of the first polarization plates or the second polarization plates is controlled by tumbler.
In addition, the polarization direction for the first polarization plates being arranged on light source can be parallel to the side of the friction treatment on substrate
To.
According to one embodiment, light source can laterally be set along support frame, and it can be that line scanning is shone to detect camera
Camera or area scan camera.
In order to realize the above object the present invention provides a kind of liquid crystal coating for being used to for liquid crystal to be applied to substrate, it is described
Liquid crystal coating includes：Main frame；Support base is sentenced in saddle, the precalculated position that the saddle is arranged on the top of main frame
Plate；Support frame, the support frame are arranged on the pre-position on the top of main frame；Coating head unit, the coating
Head unit sets precalculated position on the support frame to sentence coating of liquid crystalline；Light source, the light source are set on the support frame
Pre-position, the first polarization plates are arranged on the light output mouth of light source；And detection camera, the detection camera are set
Pre-position on the support frame, the second polarization plates are arranged on the light incident surface of detection camera.
According to one embodiment, coating head unit and detection camera may be provided on the both sides of support frame.
In addition, liquid crystal coating is settable on the support frame.Support frame may include external force means so that external force to be applied
To the liquid crystal being coated on substrate.External force means may include supersonic generator, ion generator, plasma generator and electric field
Any of generator.
In addition, if it is the shape for the liquid crystal being coated on substrate according to the result of the graphical analysis obtained to detection camera
State is defective, then can be controlled operation with by the coating head unit extraly coating of liquid crystalline.
Brief description of the drawings
By the detailed description below in conjunction with accompanying drawing, can be clearly understood from the foregoing and other purpose of the present invention, feature and
Advantage, wherein：
Fig. 1 is to show the stereogram according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state；
Fig. 2 is to show the schematic diagram according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state；
Fig. 3 A and Fig. 3 B are shown in the device according to the preferred embodiment of the invention for detecting liquid crystal coating state
The view of the arrangement of polarization plates；
Fig. 4 is to show to be taken a picture by the detection according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state
The view of the example images of machine shooting；
Fig. 5 is to show to be used to control in the device according to the preferred embodiment of the invention for being used to detect liquid crystal coating state
The block diagram of the structure of the polarization plates of image-acquisition device；
Fig. 6 is the solid for showing the device for being used to detect liquid crystal coating state according to another preferred embodiment of the present invention
Figure；
Fig. 7 is that the liquid crystal for showing the device according to the preferred embodiment of the invention for having and being used to detect liquid crystal coating state applies
The stereogram of cloth machine；And
Fig. 8 is to show the liquid with the device for being used to detect liquid crystal coating state according to another preferred embodiment of the present invention
The side view of brilliant coating machine.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.It should be noted that in different figures, phase
Same or similar part will have same reference numeral.In addition, in order to increase the definition of description, will omit and phase of the present invention
The known function and structure closed.In addition, the preferred embodiments of the present invention are will be described below, but those skilled in the art will
Understand, technological thought not limited to this of the invention, but various other forms can be used.
Fig. 1 is to show the stereogram according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state, and
And Fig. 2 is to show the schematic diagram according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state.
The device 1 according to the preferred embodiment of the invention for being used to detect liquid crystal coating state includes having the first polarization plates 22
Light source 20 and with the second polarization plates 32 detection camera 30.Coating condition checkout gear 1 may also include to be provided with thereon
Light source 20 and the detection support frame 16 of camera 30, supporting substrate 12 saddle 14 and support frame 16 is installed thereon
With the main frame 10 of saddle 14.Support frame 16 can be configured to linearly move relative to substrate 12.Therefore, settable support frame
Driver element 18.According to one embodiment, support frame driver element 18 can be linear motor.Fig. 2 table of reference symbol 13
Show the liquid crystal 13 of coating on the substrate 12.In addition, coating condition checkout gear 1 according to the preferred embodiment of the invention may include pair
The image control unit 40 handled obtained from detection camera 30 and the display unit for exporting the image obtained
42。
Light source 20 sends light, such as blue light, feux rouges or visible ray.It is vertical along support frame 16 according to one embodiment, light source 20
Substrate 12 is positioned across to ground.The light sent from light source 20 is in the horizontal direction (assuming that the moving direction of support frame 16 is perpendicular
To) it is radiated substrate 12.The light output mouth of light source 20 is provided with the first polarization plates 22.From the light that light source 20 is sent by the first polarization
Plate 22 polarizes along specific direction, and the light radiation that only the first polarization plates 22 are polarized is to substrate 12.Here, the radiation of light source 20
The region that detection camera 30 obtains image can be set in direction.
Detect the image that camera 30 obtains substrate 12.According to one embodiment, detection camera 30 can be that area is swept
Retouch camera or line scan cameras.Area scan camera can only scan and transmit a frame every time.Area scan camera
Use the imaging sensor with multiple horizontal pixels and multiple vertical pixels.Line scan cameras uses only to be had in single file
The imaging sensor of multiple horizontal pixels, so as to obtain image by line.In usable floor area smear camera or line scanography
In the case that machine is as detection camera 30, the image obtained by detection camera 30 must be by sending from light source 20
The image that the region for the substrate 12 that light is radiated is shot and obtained.
Second polarization plates 32 are arranged on the leading section of detection camera 30.Therefore, detection camera 30 is only identified along spy
Determine the light of direction polarization.
According to one embodiment, the image obtained from detection camera 30 is output to display unit 42 by control unit 40.
In addition, the effect of control unit 40 is the image that analysis obtains from detection camera 30, so that it is determined that whether liquid crystal is normally coated with.
The example whether being normally coated with as determination liquid crystal, arrangement that can be to the liquid crystal being actually coated with or quantity count, and are applied with normal
The arrangement of the liquid crystal of cloth or quantity are contrasted.
This control unit 40 can perform at least one in following functions based on the image obtained from detection camera 30
Individual function：To being coated with function that liquid crystal quantity on the substrate 12 counts, by default liquid crystal coated pattern with being actually coated with
Function that liquid crystal pattern is contrasted, the liquid crystal quantity to coating count and calculated the liquid crystal total amount (unit being coated on substrate
The liquid crystal quantity of liquid crystal weight × coating) function or by the liquid crystal size of coating and the liquid crystal chi that is in normal state coated with
Little progress row contrasts so that it is determined that the whether correct function of liquid crystal of coating.
Fig. 3 A and Fig. 3 B are shown in the device according to the preferred embodiment of the invention for detecting liquid crystal coating state
The view of the arrangement of polarization plates.
As shown in Figure 3A, the first polarization plates 22 and the second polarization plates 32 may be disposed so that their polarization direction is consistent with each other.
Alternatively, as shown in Figure 3 B, the first polarization plates 22 and the second polarization plates 32 can be arranged so that their polarization direction is hung down mutually
Directly.However, according to one embodiment of present invention, the polarization direction of the first polarization plates 22 and the polarization direction of the second polarization plates 32
Between angle be not limited to Fig. 3 A or Fig. 3 B angle, but can be adjusted in the range of from 0 ° to 90 °, as long as coating can be improved
To the picture quality of the liquid crystal of substrate 12.
In the present invention, the first polarization plates 22 are arranged on the light output mouth of light source 20 and the second polarization plates 32 are arranged on
The reason for detecting on the leading section of camera 30 is as follows：
The state of matter of liquid crystal has the property between liquid and crystal, also referred to as quasicrystal or anisotropic liquid.
Although liquid crystal is liquid, but optically have the property of crystal.If electric field is applied to liquid crystal, the direction of molecules align
Sexually revise.For LCD by controlling the penetrating come display image of light, this make use of the liquid crystal molecule edge when voltage is applied to liquid crystal molecule
The property of equidirectional orientation.
Nematic liquid crystal is the most frequently used in an lcd.In nematic liquid crystal, rod shaped liquid crystal molecule is orientated along direction unanimous on the whole,
And do not have hierarchy.Most of liquid crystal molecule has strong (hard bar) shape.Liquid crystal has optical anisotropy
Property, i.e., there is different refractivity on the direction parallel to molecular axis and the direction perpendicular to molecular axis.These properties make partially
The light to shake changes its polarization direction when through liquid crystal.In an lcd, electric field is applied to liquid crystal by by arranging liquid in the form of desired
Crystalline substance, so as to control penetrating for light.
In the case of liquid crystal coating on the substrate 12, liquid crystal is also arranged as to a certain degree when electric field is not applied
It is upper that there is directionality.For example, when on the substrate 12 being coated on liquid crystal by friction treatment, the oriented friction side of liquid crystal
To possibility it is very big.When the liquid crystal of substrate 12 of the detection Jing Guo friction treatment is coated with state, the polarization of the first polarization plates 22
Direction may be configured as the frictional direction corresponding to substrate 12.Because the possibility pole of the oriented frictional direction of liquid crystal
Greatly.
Consideration is polarized and then is radiated by the first polarization plates 22 from the light that light source 20 is sent the situation of substrate 12.If
Water drippage is on the substrate 12 rather than liquid crystal, then and the light polarized by the first polarization plates 22 is reflected and reflected in water droplet, but not
Change its polarization direction.However, if liquid crystal falls on the substrate 12, then the light polarized by the first polarization plates 22 is due to liquid crystal
And change its polarization direction, and the light for changing polarization direction will incide detection camera 30.Here, changed by liquid crystal
Polarization direction can have different directions.
When the first polarization plates 22 and the second polarization plates 32 have polarization direction as shown in Figure 3A, reflected by substrate 12
Light will incide detection camera 30 in the case of the polarization direction of light is immovable.Therefore, shot by detection camera 30
The image in the region of substrate 12 will be bright.On the contrary, by liquid crystalline refractive and the light of reflection by the feelings of the change of polarized direction of light
Detection camera 30 is incided under condition so that some light are not passed through the second polarization plates 32.As a result, the part with liquid crystal will compare base
The region of plate 12 is dark.In addition, when the first polarization plates 22 and the second polarization plates 32 have polarization direction as shown in Figure 3 B, by base
The light that plate 12 reflects will incide detection camera 30 in the case of its polarization direction is immovable.Therefore, light is by the second polarization
Plate 32 stops so that the image in the region of the substrate 12 shot by detection camera 30 will be dark.On the contrary, by liquid crystalline refractive and
The light of reflection will incide detection camera 30 in the case of its change of polarized direction.Therefore, some light polarize through second
Plate 32 so that have the part of liquid crystal that the region than substrate 12 is bright.This principle allows detection camera 30 more clearly to know
Liquid crystal 13 on the substrate 12 is not coated with.
Fig. 4 is to show to be taken a picture by the detection according to the preferred embodiment of the invention for being used to detect the device of liquid crystal coating state
The view of the example images of machine shooting.
In Fig. 4, the polarization direction of the first polarization plates 22 and the second polarization plates 32 uses Fig. 3 A direction, and area is swept
Retouch camera and be used as detection camera 30.In the image that detection camera 30 is shot, it is bright that the region of substrate 12, which is shown, and
The display of liquid crystal 13 is dark.As a result, it also can clearly grasp liquid crystal in the case of image is not handled extraly and apply cloth-like
State.
Fig. 5 is to show to be used to control in the device according to the preferred embodiment of the invention for being used to detect liquid crystal coating state
The block diagram of the structure of the polarization plates of image-acquisition device.
When obtaining the image of the liquid crystal 13 of coating on the substrate 12, the molecule in liquid crystal 13 can according to circumstances be located
In different orientations.Therefore, in order to obtain even clearer picture, it is necessary to adjust the first polarization plates 22 and the second polarization plates 32
Polarization direction.First polarization plates 22 are arranged on the light output mouth of light source 20 so that may be not easily adjusted the first polarization plates 22.
Meanwhile second polarization plates 32 be attached to detection camera 30 leading section so that can manually or automatically rotate the second polarization
Plate 32 and be easily adjusted polarization direction.According to one embodiment of present invention, the first polarization plates 22 rather than the second polarization plates
32 can be rotatable, or the first polarization plates 22 and the second polarization plates 32 be able to can rotate naturally.
In Figure 5, tumbler 44 is arranged to rotate the second polarization plates 32, and control unit 40 controls tumbler 44
Rotation.As an example of tumbler 44, tumbler 44 can be arranged so that it includes motor (not shown) and company
It is connected to the travelling gear of motor, and the form of gear tooth is on the periphery of the second polarization plates 32, with inclined by revolution second
Vibration plate 32.Control unit 40 drives tumbler 44 to rotate the second polarization plates 32, so as to obtain image from detection camera 30.
The image and the angle of the second polarization plates 32 of setting that the analysis of control unit 40 obtains, in the angle lcd segment and substrate portion shape
Into clear contrast.As an example of the graphical analysis carried out by control unit 40, the histogram analysis of image can be carried out.Such as
The contrast of fruit image is high, then the substrate portion and lcd segment for meaning image form clear contrast each other.In the case,
The histogram distribution scope of image is wide.
Fig. 6 is the solid for showing the device for being used to detect liquid crystal coating state according to another preferred embodiment of the present invention
Figure.
The general structure of Fig. 6 device 1 for being used to detect liquid crystal coating state is still identical with Fig. 1.However, different from figure
1 device, Fig. 6 device 1 are provided with multiple detection cameras 30.In figure 6, detection camera 30 can be that area scanning shines
Camera.The respective regions that the multiple area scan camera shooting is divided into by wide substrate 12.
Fig. 7 is that the liquid crystal for showing the device according to the preferred embodiment of the invention for having and being used to detect liquid crystal coating state applies
The stereogram of cloth machine.
Liquid crystal coating 100 include main frame 10, on the upper surface of main frame 10 with the saddle of supporting substrate 12
14th, movably be arranged on main frame 10 on support frame 16 and be movably connected to support frame 16
And liquid crystal is applied to the coating head unit 50 of substrate 12 when being moved relative to substrate 12 via respective nozzle.Liquid crystal coating
100 also include the light source 20 with the first polarization plates 22 and the detection camera 30 with the second polarization plates 32.Light source 20 and inspection
Survey camera 30 and be installed on support frame 16.
Referring to Fig. 7, coating head unit 50 is arranged on a surface of support frame 16, and light source 20 and detection camera
30 are arranged on another surface of support frame 16.By this structure, when liquid crystal is discharged from coating head unit 50 and is being supported
When being coated with the substrate 12 when framework 16 moves, detection camera 30 can obtain the image for the substrate 12 for being coated with liquid crystal.According to
Situation, after all liquid crystal are all coated with the substrate 12, the image of whole substrate 12 can be obtained when support frame 16 drives,
So as to allow to check the state of liquid crystal coating.
According to one embodiment of present invention, find that liquid crystal is coated with if based on the image obtained by detection camera 30
Defect, operation can be controlled so that support frame 16 is moved to desired region, and is extraly arranged by coating head unit 50
Go out liquid crystal.
Control with regard to coating head unit 50 is further described to the function of above-mentioned control unit 40 below.
, can the apparent image for definitely obtaining liquid crystal coating state according to the present invention.
Control unit 40 carries out the state of liquid crystal of the preset coordinate value of the liquid crystal of substrate with being actually coated on substrate
Contrast, so that it is determined that whether the position of the liquid crystal of coating or pattern are correct, or the part that is missed of coating with the presence or absence of liquid crystal.
Control unit 40 can calculate the liquid being coated on substrate using the liquid crystal quantity of coating and the area of coating of liquid crystalline
Crystalline substance amount.Thus, whether the amount of liquid crystal that control unit 40 determines actually to be coated with reaches or beyond every unit panel liquid crystal to be coated with
Total amount.
Control unit 40 can be by calculating the area for the liquid crystal being each coated with to determine each liquid based on the image of acquisition
Whether the size of crystalline substance drop is correct.
In addition, the pattern or amount of the liquid crystal that control unit 40 can determine actually to be coated with after Integrated Checkout conditions above are
It is no in admissible error.
When control unit 40 determines that liquid crystal coating state is incorrect, liquid crystal is extraly coated with by control coating head unit 50
To specific miss location or extraly coating of liquid crystalline, thus supplements the amount of liquid crystal lacked.
Fig. 8 is to show the liquid with the device for being used to detect liquid crystal coating state according to another preferred embodiment of the present invention
The side view of brilliant coating machine.
Referring to Fig. 8, liquid crystal coating 100 further comprises external force means 60, and external force is applied to and is coated on substrate 12
On liquid crystal 13.According to one embodiment, external force means 60 are arranged on the bottom of support frame 16, but may be alternatively located at coating
In the rearward end of head unit 50.External force is applied on liquid crystal by external force means 60, so that the molecules align in liquid crystal is along certain party
To alignment.When the light radiation sent from light source 20 is reflected through the first polarization plates 22 to substrate 12 and substrate 12 and liquid crystal
Or the light of refraction is incided through the second polarization plates 32 when detecting camera 30, this is used for providing apparent liquid crystal image.Make
For external force means 60, supersonic generator, ion generator, plasma generator or field generator can be used.If external force
Being applied to makes the molecules align of liquid crystal more regular on the liquid crystal of coating, then is output to the image of detection camera 30 and can become more clear
It is clear.
As described above, the present invention can obtain the picture rich in detail of the state for the liquid crystal being coated on substrate.In addition, the present invention permits
Perhaps the image for the substrate being coated with the case of without extra image procossing or only with minimum image procossing based on liquid crystal come
Clearly identify liquid crystal coating state.
In addition, the present invention can become apparent from the lcd segment of image by adjusting the polarization direction of polarization plates.Root
According to the present invention, the orientation of liquid crystal can be adjusted by the way that external force is applied into liquid crystal, so as to allow the lcd segment of image to become more
Clearly.
In addition, the present invention will be integrated in liquid crystal coating for the device for detecting liquid crystal coating state, so as to allow
Liquid crystal coating state is easily detected when liquid crystal is coated with or had been coated with.In addition, if liquid crystal coating state is defective, then enter
Row control operation is with extraly coating of liquid crystalline, so as to solve the problems, such as to be caused by defective liquid crystal coating state.
Although describing the preferred embodiments of the present invention for example purposes, those skilled in the art will be clear
Chu, in the case of the scope of the invention disclosed in not departing from appended claims and essence, can carry out it is a variety of modification,
Increase and replacement.Therefore, the embodiment disclosed in the present invention and accompanying drawing are not restricted but exemplary, and this hair
The scope of bright technological thought is not limited to these embodiments and accompanying drawing.The scope of the present invention should be explained by following claim,
And it will be understood that all technological thoughts in claim are within the scope of the present invention.
Claims (10)
1. a kind of device for being used to detect liquid crystal coating state, including：
Luminous light source；
The first polarization plates being arranged between the light source and the substrate for being coated with liquid crystal, first polarization plates make from the light
The light of source radiation optionally through；
Second polarization plates, second polarization plates make through first polarization plates afterwards by the substrate or liquid crystal reflection or folding
Penetrate from the light that the light source is sent optionally through；
Camera is detected, the detection camera receives the light through second polarization plates, and the light is converted into telecommunications
Number；And
Tumbler, the tumbler adjust the polarization direction of first polarization plates or second polarization plates.
2. device according to claim 1, in addition to：
Control unit, the image that described control unit analysis obtains from the detection camera, and pass through the tumbler control
Make the rotational angle of first polarization plates or second polarization plates.
3. device according to claim 1, wherein, the polarization direction of first polarization plates is parallel on the substrate
The direction of friction treatment.
4. device according to claim 1, wherein, the detection camera is line scan cameras or area scanning photograph
Machine.
5. device according to claim 1, in addition to：
Just whether control unit, described control unit determine the coating of liquid crystal based on the image obtained from the detection camera
Really.
6. a kind of liquid crystal coating for being used to for liquid crystal to be applied to substrate, including：
Main frame；
The support substrate is sentenced on saddle, the top that the saddle is arranged on the main frame；
Support frame, the support frame are arranged at the top of the main frame；
Coating head unit, the coating head unit are arranged at the support frame with coating of liquid crystalline；
Light source, the light source are arranged at the support frame, and the first polarization plates are arranged on the light output mouth of the light source；Detection
Camera, the detection camera are arranged at the support frame, and the light that the second polarization plates are arranged on the detection camera enters
In reflective surface；
Tumbler, the tumbler adjust the polarization direction of first polarization plates or second polarization plates.
7. liquid crystal coating according to claim 6, wherein, the coating head unit and the detection camera are arranged on
On the both sides of the support frame.
8. liquid crystal coating according to claim 6, wherein, the support frame includes external force means so that external force to be applied
To the liquid crystal of coating on the substrate.
9. liquid crystal coating according to claim 8, wherein, the external force means include supersonic generator, ion is sent out
Any of raw device, plasma generator and field generator.
10. the liquid crystal coating according to any one of claim 6 to 9, wherein, if according to the detection camera
The result of the graphical analysis of acquisition be coated with liquid crystal on the substrate state it is defective, then be controlled operation to pass through
The coating head unit extraly coating of liquid crystalline.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0047614 | 2012-05-04 | ||
| KR1020120047614A KR20130124027A (en) | 2012-05-04 | 2012-05-04 | Device for inspecting liquid crystal dispensing state, and liquid crystal dispenser having the device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103383499A CN103383499A (en) | 2013-11-06 |
| CN103383499B true CN103383499B (en) | 2018-03-02 |
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| CN201210254774.8A Active CN103383499B (en) | 2012-05-04 | 2012-07-23 | Detect the device of liquid crystal coating state and the liquid crystal coating with the device |
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| Country | Link |
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| KR (1) | KR20130124027A (en) |
| CN (1) | CN103383499B (en) |
| TW (1) | TWI560505B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104317075B (en) * | 2014-10-14 | 2017-10-24 | 深圳市华星光电技术有限公司 | Lighting-up equipment of liquid crystal cell |
| CN104360548B (en) * | 2014-12-09 | 2017-06-06 | 合肥鑫晟光电科技有限公司 | Liquid crystal ink-jet application equipment and parameter regulation means, liquid crystal coating and inspection system |
| CN105739137A (en) * | 2016-04-22 | 2016-07-06 | 京东方科技集团股份有限公司 | Device and method for detecting diffusion of liquid crystals and manufacturing equipment of liquid crystal display panel |
| CN107526195A (en) * | 2017-09-25 | 2017-12-29 | 京东方科技集团股份有限公司 | A kind of liquid crystal punctures detection device and its detection method |
| KR102033337B1 (en) * | 2018-11-26 | 2019-11-08 | 주식회사 탑 엔지니어링 | Apparatus for inspecting substrate |
| JP7365886B2 (en) * | 2019-12-16 | 2023-10-20 | 花王株式会社 | Adhesive application state inspection method and inspection device |
| KR102612182B1 (en) | 2020-12-30 | 2023-12-13 | 세메스 주식회사 | Apparatus and method for inspecting dropped stated of ink droplet and methond |
| CN116256909B (en) * | 2023-05-15 | 2023-08-08 | 苏州优备精密智能装备股份有限公司 | Real-time detection processing system and processing method for liquid crystal coating |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI560505B (en) | 2016-12-01 |
| TW201346402A (en) | 2013-11-16 |
| CN103383499A (en) | 2013-11-06 |
| KR20130124027A (en) | 2013-11-13 |
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