CN107526195A - A kind of liquid crystal punctures detection device and its detection method - Google Patents
A kind of liquid crystal punctures detection device and its detection method Download PDFInfo
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- CN107526195A CN107526195A CN201710875460.2A CN201710875460A CN107526195A CN 107526195 A CN107526195 A CN 107526195A CN 201710875460 A CN201710875460 A CN 201710875460A CN 107526195 A CN107526195 A CN 107526195A
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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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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a kind of liquid crystal and punctures detection device, including：Fall to penetrate light source, the incident ray of the liquid crystal panel is incident to for providing；Imaging device, it is described to fall to penetrate light source and the imaging device into predetermined angle for receiving the reflection light from the liquid crystal panel；The polarizer, it is arranged on described to fall to penetrate between light source and the liquid crystal panel；Analyzer, it is arranged between the imaging device and the liquid crystal panel, wherein, the polarization direction of the polarizer is vertical with the polarization direction of the analyzer；Detection module, for falling to penetrate incident ray that light source sends after the polarizer, the liquid crystal panel, the analyzer inject the imaging device described, image is obtained from the imaging device, the liquid crystal for determining the liquid crystal panel according to described image punctures state.The liquid crystal puncture detection device of the embodiment of the present invention is simple to operate, and automaticity is high, saves human resources, is effectively improved the detection efficiency of liquid crystal puncture.
Description
Technical field
The present invention relates to technical field of liquid crystal display, and detection device and its detection side are punctured more particularly to a kind of liquid crystal
Method.
Background technology
With the high-resolution very fast development of liquid crystal display and the intensification of the market demand of narrow frame, the width of sealant
More and more narrow, in order to improve transmitance, negative liquid crystal is also more and more used in liquid crystal display product, and liquid crystal punctures
Become the problem of inevitable in liquid crystal display product.
In liquid crystal panel, puncturing generation more than 50% has the brilliant risk of disconnected glue leakage；Puncture and occur within 50%, seal frame
The adhesion of glue can reduce, and cause two substrate separation (Peel off), it is bad to ultimately result in display.
At present, in order to avoid there is Peel off risk, special microscope observation panel (panel) is typically used
Carry out liquid crystal and puncture monitoring.Each teams and groups inspect a Q panel (a Q panel includes 50 single panel) by random samples and carried out
Monitoring, each Q panel monitoring need to spend 30min~60min.Such monitor mode punctures for liquid crystal can play prison
Control acts on, but because amount detection is less, automaticity is low, under-represented, and detection needs special microscope every time
And engineer corresponds to for a long time, the waste of manpower and financial resources is caused.
The content of the invention
The invention provides a kind of liquid crystal to puncture detection device, to solve in the prior art liquid crystal to be punctured to detect to take
Long, the problem of automaticity is low.
On the one hand, the present invention provides a kind of liquid crystal and punctures detection device, including：
Fall to penetrate light source, the incident ray of the liquid crystal panel is incident to for providing；
Imaging device, it is described to fall to penetrate light source and the imaging dress for receiving the reflection light from the liquid crystal panel
It is set to predetermined angle；
The polarizer, it is arranged on described to fall to penetrate between light source and the liquid crystal panel；
Analyzer, it is arranged between the imaging device and the liquid crystal panel, wherein, the polarization direction of the polarizer
It is vertical with the polarization direction of the analyzer；
Detection module, for falling to penetrate incident ray that light source sends through the polarizer, the liquid crystal panel, institute described
After stating the analyzer injection imaging device, image is obtained from the imaging device, determines that the liquid crystal of the liquid crystal panel punctures
State.
Alternatively, the detection module is used for the size for detecting bright areas in described image, according to the bright areas
Size determine liquid crystal puncture size, wherein, the bright areas in described image is incident to the imaging by the analyzer
Light in device produces.
Alternatively, the detection module be additionally operable to obtain the sealant of the liquid crystal panel glue it is wide, and according to puncture chi
It is very little to puncture degree with the wide liquid crystal for determining the sealant of the glue.
Alternatively, the position-adjustable of the polarizer and the analyzer；
It is described to be polarized after liquid crystal puncture degree detecting of the liquid crystal puncture detection device to the liquid crystal panel terminates
Fall to penetrate between light source and the liquid crystal panel described in device is extensible；The extensible imaging device of analyzer and the liquid crystal
Between panel.
Alternatively, the liquid crystal punctures detection device and is additionally operable to that the liquid crystal panel is carried out to align detection and sealant glue
Wide detection.
Fixed test point is alternatively provided with the liquid crystal panel, the liquid crystal punctures detection device can be along the liquid crystal
Panel moves, and carries out liquid crystal to the liquid crystal panel in the fixed test point and puncture detection.
On the other hand, present invention also offers a kind of liquid crystal to puncture detection method, and puncturing detection applied to above-mentioned liquid crystal sets
It is standby, including：
When carrying out liquid crystal and puncturing detection, fall to penetrate light source described in opening, make described to fall to penetrate and be polarized described in the light warp of light source
Enter the imaging device after device, the liquid crystal panel, the analyzer；
The detection module obtains image from the imaging device, and the liquid crystal of the liquid crystal panel is determined according to described image
Puncture state.
Alternatively, the detection module obtains image from the imaging device, and the liquid crystal surface is determined according to described image
The liquid crystal of plate punctures state, including：
The size of bright areas in the detection module detection described image；
Determine that liquid crystal punctures size according to the size of the bright areas；
Wherein, the light that the bright areas in described image is incident to by the analyzer in the imaging device produces
It is raw.
Alternatively, the detection module obtains image from the imaging device, and the liquid crystal surface is determined according to described image
The liquid crystal of plate punctures state, in addition to：
The glue that the detection module obtains the sealant of the liquid crystal panel is wide；
And puncture degree with the wide liquid crystal for determining the sealant of the glue according to size is punctured.
Alternatively, before the progress liquid crystal punctures detection, in addition to：
The detection device moves along the liquid crystal panel；
When the detection device is moved to the fixed test point on the liquid crystal panel, then carries out the liquid crystal and puncture inspection
Survey.
Compared with prior art, the embodiment of the present invention has advantages below：
The liquid crystal of the embodiment of the present invention punctures detection device, falls to penetrate incident ray that light source is sent through stating the polarizer, liquid crystal
After panel and analyzer inject the imaging device, image can be obtained from imaging device by detection mould, so it is true by analyzing
The liquid crystal for determining liquid crystal panel punctures state.The detection device is simple to operate, and automaticity is high, saves human resources, effectively
Improve the detection efficiency of liquid crystal puncture.
Brief description of the drawings
Fig. 1 show a kind of liquid crystal puncture assay device structures schematic diagram that the present invention applies example；
Fig. 2 show a kind of liquid crystal penetration length testing result schematic diagram of the embodiment of the present invention；
A kind of liquid crystal that Fig. 3 show the embodiment of the present invention punctures detection method flow chart.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's every other implementation acquired under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
In one embodiment of the invention, there is provided a kind of liquid crystal punctures detection device, its structural representation reference picture 1
Shown, the liquid crystal, which punctures detection device, to be included：Fall to penetrate light source 1, the incident ray 11 of liquid crystal panel 5 is incident to for providing；Into
As device 2, for receiving the reflection light 21 of the liquid crystal panel 5 come, and fall to penetrate light source 1 and imaging device 2 into predetermined angle,
To ensure that the light for falling to penetrate light source 1 can enter in imaging device 2 after the reflection of liquid crystal panel 5；The polarizer 3, it is arranged on and falls to penetrate
Between light source 1 and liquid crystal panel 5；Analyzer 4, be arranged between imaging device 2 and liquid crystal panel 5, wherein, the polarizer 3 it is inclined
The direction that shakes is vertical with the polarization direction of analyzer 4；Detection module (does not mark) in figure, in the incidence for falling to penetrate light source 1 and sending
Light 11 obtains image, according to image after the polarizer 3, liquid crystal panel 5, analyzer 4 inject imaging device 2 from imaging device 2
Determine that the liquid crystal of liquid crystal panel 5 punctures state.
Above-mentioned liquid crystal punctures detection device, and the polarizer 3 is vertical with the polarization direction of analyzer 4, falls to penetrate the light warp of light source 1
After the polarizer 3, incident ray 11 is changed into the polarization direction identical polarised light with the polarizer 3, then is reflected through liquid crystal panel 5, such as
Fruit punctures without liquid crystal, after reflection light 21 is mapped to analyzer 4, does not have light and enters imaging device 2, and working as has liquid crystal puncture
When, because the optically-active of liquid crystal acts on, the polarization direction for having part reflection light 12 changes, so as to be entered by analyzer 4
Enter imaging device 2, detection module is after the image of imaging device 2 is obtained, it may be determined that the puncture state of liquid crystal panel.
The detection device is simple to operate, and automaticity is high, saves human resources, is effectively improved the inspection of liquid crystal puncture
Survey efficiency.
Specifically, above-mentioned liquid crystal, which punctures detection device, can detect liquid crystal puncture size.Shown in reference picture 2, for the present invention
A kind of liquid crystal penetration length testing result schematic diagram of embodiment, detection module is from the acquisition image of imaging device 2, detection image
The size of bright areas 6, determine that liquid crystal punctures size according to the size of bright areas 6, for example, penetration length is shown in Fig. 2
0.22mm.Wherein, the light that bright areas 6 is incident to by analyzer 4 in imaging device 2 in image produces.
Above-mentioned liquid crystal, which punctures detection device, to be added on existing Align Inspection (to level detection apparatus)
Liquid crystal punctures detection function, and therefore, the liquid crystal in the embodiment of the present invention punctures detection device and can be also used for entering liquid crystal panel
The detection that row contraposition detects and sealant glue is wide, its contraposition detection detection wide with sealant glue is same as the prior art, herein
Repeat no more.That is, the wide detection side of sealant glue can be carried out by existing Align Inspection counter plates
Glue is wide obtaining for method, and puncturing the puncture size that the detection module of detection device obtains further according to the liquid crystal in the embodiment of the present invention obtains
Liquid crystal to sealant punctures degree, specifically, the value of the degree of puncture is puncture size and the wide ratio of sealant glue.Certainly,
The detection module of the embodiment of the present invention can also be utilized to obtain the glue of the sealant of liquid crystal panel according to the image of imaging device
Width, and puncture degree with the wide liquid crystal for determining sealant of glue according to size is punctured.
When carrying out contraposition detection with the wide detection of sealant glue, it is not necessary to the polarizer 3 and analyzer 4, therefore, the polarizer
3 with the position-adjustable of analyzer 4, specifically can be by the simple structure such as connecting rod and support, by the polarizer 3 and analyzer
4 are connected to fall to penetrate on light source 1 and imaging device 2, pass through these structures, it is possible to achieve the polarizer 3 turns with analyzer 4
It is dynamic.When carrying out liquid crystal puncture detection, the polarizer 3, which is located at, to be fallen to penetrate between light source 1 and liquid crystal panel 5, and analyzer 4 fills positioned at imaging
Put between 2 and liquid crystal panel 5, and after liquid crystal puncture degree detecting of the liquid crystal puncture detection device to liquid crystal panel 5 terminates,
The polarizer 3 can be removed fall to penetrate between light source 1 and liquid crystal panel 5, by analyzer 4 remove imaging device 2 and liquid crystal panel 5 it
Between.
The above-mentioned detection that degree is punctured to liquid crystal, is that the fixing point on liquid crystal panel is detected, is united according to data
Meter, the puncture position of liquid crystal panel are relatively fixed, and therefore, need to only detect the puncture degree can reflection entire surface of fixing point position
The puncture degree of plate.Fixed test point is provided with liquid crystal panel 5, the liquid crystal punctures detection device and can moved along liquid crystal panel 5
It is dynamic, make to fall to penetrate light source 1, the polarizer 3, analyzer 4 and imaging device 2 and move to predeterminated position, in fixed test point to liquid crystal panel 5
Carry out liquid crystal and puncture detection.
Equally, can also be that above-mentioned fixing point is detected for the wide detection of glue, can so make glue it is wide detection with
The detection that liquid crystal punctures synchronously is carried out, and saves detection time.
Above-mentioned liquid crystal punctures detection device and moved along liquid crystal panel, specifically can will fall to penetrate light source 1 and imaging device 2 is consolidated
It is scheduled on the guide rail of liquid crystal pricking device, falls to penetrate the movement of light source 1 and imaging device 2 by controls such as motors, its implementation
Have a variety of, will not be repeated here.
The light source 1 that falls to penetrate that above-mentioned liquid crystal punctures detection device can be LED, and imaging device 2 can be ccd video camera,
Detection module carries out calculation process according to image in ccd video camera.
Detection device is punctured using the liquid crystal of the embodiment of the present invention, detection efficiency can be effectively improved, with a Q panel
Exemplified by, each single panel need to detect two fixing points, using the equipment, detect the liquid crystal each put and puncture degree only
2s, one Q panel of detection is needed only to need 1.67min, and in the prior art, it is necessary to 30~60min.
It can be seen from the above technical proposal that the embodiment of the present invention includes advantages below：
The liquid crystal of the embodiment of the present invention punctures detection device, falls to penetrate incident ray that light source is sent through stating the polarizer, liquid crystal
After panel and analyzer inject the imaging device, image can be obtained from imaging device by detection mould, so it is true by analyzing
The liquid crystal for determining liquid crystal panel punctures state.The detection device is simple to operate, and automaticity is high, saves human resources, effectively
Improve the detection efficiency of liquid crystal puncture.
The embodiment of the present invention additionally provides a kind of liquid crystal and punctures detection method, and the liquid crystal applied to above-described embodiment punctures inspection
Measurement equipment, shown in reference picture 3, comprise the following steps：
Step 100, when carrying out liquid crystal and puncturing detection, opening falls to penetrate light source, make to fall to penetrate the light of light source by the polarizer,
Enter imaging device after liquid crystal panel, analyzer.
In the present embodiment, the polarizer that the liquid crystal punctures detection device is vertical with the polarization direction of analyzer, and opening falls to penetrate
After light source, falling to penetrate the light of light source after the polarizer, incident ray is changed into the polarization direction identical polarised light with the polarizer, then
Reflected through liquid crystal panel, if punctured without liquid crystal, after reflection light is mapped to analyzer, does not have light and enter imaging device, and
When there is liquid crystal puncture, because the optically-active of liquid crystal acts on, the polarization direction for having part reflection light changes, so as to pass through
Analyzer enters imaging device.
Before carrying out liquid crystal and puncturing detection, it is also necessary to detection device is moved along liquid crystal panel, moved in detection device
During fixed test point on to liquid crystal panel, then carry out liquid crystal and puncture detection.Because according to data statistics, the puncture of liquid crystal panel
Position is relatively fixed, and therefore, the puncture degree can that need to only detect fixing point position reflects the puncture degree of whole panel.
The liquid crystal, which punctures detection device, can also carry out contraposition detection and the wide detection of sealant glue, and carry out both
During detection, it is not necessary to which the polarizer and analyzer, therefore, the position of the polarizer and analyzer is adjustable.Worn when carrying out liquid crystal
, it is necessary to adjust the position of the polarizer and analyzer before thorn detection, it is located at the polarizer and falls to penetrate between light source and liquid crystal panel, examines
Inclined device is between imaging device and liquid crystal panel, then carries out liquid crystal and puncture detection, wherein each fixed inspection on plate over there
When measuring point is detected, normal bright state can be kept by falling to penetrate light source, can also be worked as the polarizer and be moved to test position with analyzer
When, then open and penetrate light source, when often having detected a fixed test point, closing falls to penetrate light source, carries out next fixed test point
Detection when, then open and fall to penetrate light source.
Step 200, detection module obtains image from imaging device, and the liquid crystal for determining liquid crystal panel according to described image punctures
Degree.
Detailed process is the size of bright areas in detection module test pattern, liquid to be determined according to the size of bright areas
Crystalline substance punctures size.Wherein, the light that bright areas is incident to by analyzer in imaging device in image produces.
The glue that above-mentioned detection module can also obtain liquid crystal panel sealant is wide, and determines to seal according to puncture size and glue are wide
The liquid crystal of frame glue punctures degree.
The wide detection of above-mentioned sealant glue, detection can be punctured with liquid crystal and separate progress, can also synchronously be carried out, specifically
Illustrate in upper one embodiment, will not be repeated here.
The liquid crystal, which punctures detection device, can also carry out contraposition detection and the wide detection of sealant glue, be punctured when completing liquid crystal
Detection, or when align detection or the wide detection of sealant glue, the polarizer can be removed fall to penetrate light source and liquid crystal panel it
Between, analyzer is removed between imaging device and liquid crystal panel.
It can be seen from the above technical proposal that the embodiment of the present invention includes advantages below：
A kind of liquid crystal of the embodiment of the present invention punctures detection method, and detection device, this method operation are punctured applied to liquid crystal
Simply, and liquid crystal puncture detection device automaticity it is higher, save human resources, be effectively improved liquid crystal puncture inspection
Survey efficiency.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.For system embodiment
For, because it is substantially similar to embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
Defend oneself bright.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for range of embodiment of the invention.
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 defined by scope of the claims.
Claims (10)
1. a kind of liquid crystal punctures detection device, it is characterised in that including：
Fall to penetrate light source, the incident ray of the liquid crystal panel is incident to for providing；
Imaging device, for receiving the reflection light from the liquid crystal panel, it is described fall penetrate light source and the imaging device into
Predetermined angle；
The polarizer, it is arranged on described to fall to penetrate between light source and the liquid crystal panel；
Analyzer, it is arranged between the imaging device and the liquid crystal panel, wherein, the polarization direction of the polarizer and institute
The polarization direction for stating analyzer is vertical；
Detection module, for falling to penetrate incident ray that light source sends through the polarizer, the liquid crystal panel, the inspection described
After inclined device injects the imaging device, image is obtained from the imaging device, the liquid crystal panel is determined according to described image
Liquid crystal punctures state.
2. liquid crystal according to claim 1 punctures detection device, it is characterised in that the detection module is described for detecting
The size of bright areas in image, determine that liquid crystal punctures size according to the size of the bright areas, wherein, in described image
The light that bright areas is incident to by the analyzer in the imaging device produces.
3. liquid crystal according to claim 2 punctures detection device, it is characterised in that the detection module is additionally operable to obtain institute
State that the glue of the sealant of liquid crystal panel is wide, and journey is punctured with the wide liquid crystal for determining the sealant of the glue according to size is punctured
Degree.
4. liquid crystal according to claim 1 punctures detection device, it is characterised in that
The position-adjustable of the polarizer and the analyzer；
After liquid crystal puncture degree detecting of the liquid crystal puncture detection device to the liquid crystal panel terminates, the polarizer can
Fall to penetrate between light source and the liquid crystal panel described in removal；The extensible imaging device of analyzer and the liquid crystal panel
Between.
5. liquid crystal according to claim 1 punctures detection device, it is characterised in that the liquid crystal punctures detection device and also used
In carrying out aligning detection and the wide detection of sealant glue to the liquid crystal panel.
6. the liquid crystal according to any one of claim 1 to 5 punctures detection device, it is characterised in that on the liquid crystal panel
Fixed test point is provided with, the liquid crystal punctures detection device and can moved along the liquid crystal panel, and in the fixed test point
Liquid crystal is carried out to the liquid crystal panel and punctures detection.
7. a kind of liquid crystal punctures detection method, detection device is punctured applied to the liquid crystal as described in any one of claim 1 to 6,
It is characterised in that it includes：
When carrying out liquid crystal and puncturing detection, fall to penetrate light source described in opening, make described to fall to penetrate the light of light source through the polarizer, institute
Enter the imaging device after stating liquid crystal panel, the analyzer；
The detection module obtains image from the imaging device, and the liquid crystal for determining the liquid crystal panel according to described image punctures
State.
8. liquid crystal according to claim 7 punctures detection method, it is characterised in that the detection module fills from the imaging
Acquisition image is put, determines that the liquid crystal of the liquid crystal panel punctures state according to described image, including：
The size of bright areas in the detection module detection described image；
Determine that liquid crystal punctures size according to the size of the bright areas；
Wherein, the light that the bright areas in described image is incident to by the analyzer in the imaging device produces.
9. liquid crystal according to claim 8 punctures detection method, it is characterised in that the detection module fills from the imaging
Acquisition image is put, determines that the liquid crystal of the liquid crystal panel punctures state according to described image, in addition to：
The glue that the detection module obtains the sealant of the liquid crystal panel is wide；
And puncture degree with the wide liquid crystal for determining the sealant of the glue according to size is punctured.
10. liquid crystal according to claim 7 punctures detection method, it is characterised in that punctures detection in the progress liquid crystal
Before, in addition to：
The detection device moves along the liquid crystal panel；
When the detection device is moved to the fixed test point on the liquid crystal panel, then carries out the liquid crystal and puncture detection.
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| CN201710875460.2A CN107526195A (en) | 2017-09-25 | 2017-09-25 | A kind of liquid crystal punctures detection device and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710875460.2A CN107526195A (en) | 2017-09-25 | 2017-09-25 | A kind of liquid crystal punctures detection device and its detection method |
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| JP2004348054A (en) * | 2003-05-26 | 2004-12-09 | Alps Electric Co Ltd | Device and method for measuring liquid crystal cell |
| CN102645763A (en) * | 2011-07-22 | 2012-08-22 | 京东方科技集团股份有限公司 | Frame sealing glue width detecting method, system and equipment |
| CN103383499A (en) * | 2012-05-04 | 2013-11-06 | 塔工程有限公司 | Device for detecting liquid crystal coating state and liquid crystal coater comprising same |
| 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 |
-
2017
- 2017-09-25 CN CN201710875460.2A patent/CN107526195A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004348054A (en) * | 2003-05-26 | 2004-12-09 | Alps Electric Co Ltd | Device and method for measuring liquid crystal cell |
| CN102645763A (en) * | 2011-07-22 | 2012-08-22 | 京东方科技集团股份有限公司 | Frame sealing glue width detecting method, system and equipment |
| CN103383499A (en) * | 2012-05-04 | 2013-11-06 | 塔工程有限公司 | Device for detecting liquid crystal coating state and liquid crystal coater comprising same |
| 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 |
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Application publication date: 20171229 |