CN1321822C - Alignment film production system - Google Patents
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- CN1321822C CN1321822C CNB2004100980006A CN200410098000A CN1321822C CN 1321822 C CN1321822 C CN 1321822C CN B2004100980006 A CNB2004100980006 A CN B2004100980006A CN 200410098000 A CN200410098000 A CN 200410098000A CN 1321822 C CN1321822 C CN 1321822C
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 55
- 238000000576 coating method Methods 0.000 claims abstract description 55
- 238000011084 recovery Methods 0.000 claims abstract description 51
- 239000003973 paint Substances 0.000 claims description 57
- 239000004642 Polyimide Substances 0.000 claims description 42
- 229920001721 polyimide Polymers 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 235000014347 soups Nutrition 0.000 claims 3
- 239000007888 film coating Substances 0.000 abstract description 35
- 238000009501 film coating Methods 0.000 abstract description 35
- 238000004064 recycling Methods 0.000 abstract description 15
- 238000003860 storage Methods 0.000 description 27
- 238000001035 drying Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 238000007639 printing Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000002542 deteriorative effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000007774 anilox coating Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Coating Apparatus (AREA)
Abstract
Description
技术领域technical field
本发明有涉及一种取向膜制作系统，特别是涉及一种因可有效回收取向膜涂料而可节省制造成本的取向膜制作系统。The present invention relates to an alignment film manufacturing system, in particular to an alignment film manufacturing system that can save manufacturing costs due to the effective recovery of alignment film paint.
背景技术Background technique
一般而言，液晶显示器面板主要是由两片基板，以及位于基板之间的液晶层所组成，在公知主动或被动矩阵式液晶显示器中通常必须在基板上涂布取向膜(alignment layer)，以对液晶层中的液晶分子进行取向，进而使液晶分子在基板之间产生扭转。传统的取向膜工艺主要是可区分为取向膜印刷以及取向处理两个步骤，其中取向膜的材料通常以聚亚醯胺(Polyimide，PI)为主，通过转印辊(printing roller)涂布于基板后，再以定向摩擦(rubbing)的方式进行取向处理。Generally speaking, a liquid crystal display panel is mainly composed of two substrates and a liquid crystal layer located between the substrates. In known active or passive matrix liquid crystal displays, an alignment film (alignment layer) must usually be coated on the substrate to The liquid crystal molecules in the liquid crystal layer are aligned, and then the liquid crystal molecules are twisted between the substrates. The traditional alignment film process can be divided into two steps: alignment film printing and alignment treatment. The material of the alignment film is usually polyimide (PI), which is coated on the surface by a printing roller. After the substrate, orientation treatment is carried out by orientation rubbing.
为了有效地利用取向膜涂料并避免浪费，在涂布取向膜的制作过程中可适当地回收取向膜材料例如聚亚醯胺(polyimide)，以达到节省成本的目的。首先参阅图1，如美国专利6,386,102号所披露的取向膜印刷装置(Alignmentlayer printing device)，当取向膜涂料80聚亚醯胺经由传墨辊54(aniloxroller)依一特定方向转印于一基板上后，剩余的取向膜涂料80往下落入盛接容器72内，其中通过传感器82量测剩余取向膜涂料80的品质参数，并传送一电子讯号至微处理器84，上述微处理器84可据此判断并驱动下方控制阀86，以将取向膜涂料80直接通过管路88排放至废料桶70，或者经由管路74以及控制阀76使得取向膜涂料80可直接回收再使用。In order to effectively utilize the alignment film coating and avoid waste, the alignment film material such as polyimide can be properly recycled during the production process of the coating alignment film, so as to achieve the purpose of cost saving. Referring first to Fig. 1, as disclosed in U.S. Patent No. 6,386,102, the alignment film printing device (Alignmentlayer printing device), when the alignment film coating 80 polyimide is transferred on a substrate according to a specific direction via ink transfer roller 54 (aniloxroller) Afterwards, the remaining alignment film paint 80 falls down into the holding container 72, wherein the quality parameters of the remaining alignment film paint 80 are measured by the sensor 82, and an electronic signal is sent to the microprocessor 84, and the above microprocessor 84 can be used according to This judges and drives the lower control valve 86 to directly discharge the alignment film paint 80 to the waste bin 70 through the pipeline 88 , or directly recycle the alignment film paint 80 through the pipeline 74 and the control valve 76 .
如前所述，公知的取向膜印刷装置是将残余的取向膜涂料80直接回收再使用，然而在回收的过程中并未对使用过的取向膜涂料80采取进一步适当的处理。由于聚亚醯胺(Polyimide，PI)容易与水分子作用而变质，同时导致黏度下降，故传统的取向膜涂料回收方式实不易控制取向膜涂料80的品质，甚至可能对显示器的功能以及显示品质产生不良的影响。As mentioned above, the known alignment film printing device directly recycles the residual alignment film coating 80 for reuse, but does not take further appropriate treatment for the used alignment film coating 80 during the recycling process. Because polyimide (PI) is easy to interact with water molecules to deteriorate and cause a decrease in viscosity, it is not easy to control the quality of alignment film 80 by the traditional recycling method of alignment film coating, and may even affect the function and display quality of the display. produce adverse effects.
发明内容Contents of the invention
有鉴于上述公知取向膜涂料回收方式的缺点，本发明提出一种取向膜制作系统，包括一取向膜涂布装置以及一涂料回收系统。上述涂料回收系统连接取向膜涂布装置，并接收由取向膜涂布装置产生的一回收取向膜涂料。上述的回收取向膜涂料被导入涂料回收系统中的一混合容器内。一新鲜取向膜涂料自上述涂料回收系统中的一新鲜涂料容器输入至上述混合容器，其中上述新鲜取向膜涂料与上述回收取向膜涂料在混合容器中混合至一目标黏度，以供应上述取向膜涂布装置使用。In view of the disadvantages of the above-mentioned methods of recycling the paint of the known alignment film, the present invention proposes an alignment film manufacturing system, which includes an alignment film coating device and a paint recycling system. The paint recycling system is connected to the alignment film coating device, and receives a recycled alignment film paint produced by the alignment film coating device. The above-mentioned recovered alignment film paint is introduced into a mixing container in the paint recovery system. A fresh alignment film coating is input from a fresh coating container in the coating recovery system to the mixing container, wherein the fresh alignment coating and the recycling alignment coating are mixed to a target viscosity in the mixing container to supply the alignment coating Cloth device is used.
在一较佳实施例中，上述涂料回收系统还包括一盛接容器，收集由取向膜涂布装置所产生的回收取向膜涂料。此外，上述涂料回收系统还包括一第一暂存容器以及一涂料回收管路，涂料回收管路连接盛接容器与第一暂存容器，以将回收取向膜涂料导入上述第一暂存容器中。In a preferred embodiment, the above-mentioned paint recycling system further includes a receiving container for collecting the recycled paint for the alignment film produced by the alignment film coating device. In addition, the above-mentioned paint recovery system also includes a first temporary storage container and a paint recovery pipeline, the paint recovery pipeline connects the receiving container and the first temporary storage container, so as to import the recovered alignment film paint into the first temporary storage container .
在一较佳实施例中，上述涂料回收系统还包括一第二暂存容器，连接第一暂存容器与混合容器。此外，上述涂料回收系统还包括一过程药液供给容器以及一涂料供应管路，其中过程药液供给容器连接混合容器，涂料供应管路连接过程药液供给容器以及上述取向膜涂布装置。In a preferred embodiment, the above paint recovery system further includes a second temporary storage container connected to the first temporary storage container and the mixing container. In addition, the paint recovery system also includes a process chemical supply container and a paint supply pipeline, wherein the process chemical supply container is connected to the mixing container, and the paint supply pipeline is connected to the process chemical supply container and the above-mentioned alignment film coating device.
在一较佳实施例中，上述涂料回收系统还包括一废液瓶，连接第一暂存容器。此外，上述涂料回收系统还包括一湿度控制腔室，混合容器以及新鲜涂料容器设置于湿度控制腔室内。In a preferred embodiment, the above paint recovery system further includes a waste liquid bottle connected to the first temporary storage container. In addition, the above-mentioned paint recovery system further includes a humidity control chamber, and the mixing container and the fresh paint container are arranged in the humidity control chamber.
在一较佳实施例中，上述涂料回收系统还包括一氮气供给装置，输出氮气至混合容器以及新鲜涂料容器中。此外，上述涂料回收系统还包括一设置于涂料供应管路中的金属离子去除装置。In a preferred embodiment, the above-mentioned paint recycling system further includes a nitrogen gas supply device, which outputs nitrogen gas to the mixing container and the fresh paint container. In addition, the above-mentioned paint recovery system also includes a metal ion removal device arranged in the paint supply pipeline.
在一较佳实施例中，上述涂料回收系统还包括一设置于第一暂存容器内的液位计，当回收取向膜涂料超过一极限高度时，回收取向膜涂料由第一暂存容器传送至第二暂存容器。In a preferred embodiment, the above-mentioned coating recovery system also includes a liquid level gauge arranged in the first temporary storage container, and when the recovery alignment film coating exceeds a limit height, the recovery alignment film coating is conveyed by the first temporary storage container to the second staging container.
在一较佳实施例中，上述涂料回收系统还包括一设置于第一暂存容器内的黏度检测计，当回收取向膜涂料黏度超出一容许范围时，回收取向膜涂料由第一暂存容器传送至上述废液瓶。In a preferred embodiment, the above paint recovery system further includes a viscosity detector arranged in the first temporary storage container. Transfer to waste bottle above.
在一较佳实施例中，上述取向膜涂布装置包括一传墨辊以及一挡板。上述挡板与传墨辊表面接触，以刮除传墨辊表面上的回收取向膜涂料。In a preferred embodiment, the above-mentioned alignment film coating device includes an ink transfer roller and a baffle. The above-mentioned baffle is in contact with the surface of the ink transfer roller to scrape off the recovered orientation film paint on the surface of the ink transfer roller.
在一较佳实施例中，上述取向膜涂布装置包括一传墨辊以及一刮刀，上述传墨辊绕一中心轴转动，具有一滚动面以及一环状凹槽，其中环状凹槽位于滚动面的边缘。此外，上述刮刀在上述滚动面上沿着中心轴方向往复滑动。In a preferred embodiment, the above-mentioned alignment film coating device includes an ink transfer roller and a scraper, the above-mentioned ink transfer roller rotates around a central axis, has a rolling surface and an annular groove, wherein the annular groove is located at The edge of the scroll surface. In addition, the scraper reciprocally slides along the center axis direction on the rolling surface.
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例并结合附图做详细说明。In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings.
附图说明Description of drawings
图1是表示公知取向膜印刷装置的示意图；Fig. 1 is the schematic diagram that represents known alignment film printing device;
图2是表示本发明中取向膜制作系统的示意图；Fig. 2 is the schematic diagram representing the production system of alignment film among the present invention;
图3a是表示取向膜涂布装置中传墨辊与刮刀的示意图；以及Fig. 3 a is the schematic diagram that represents ink transfer roller and scraper in the coating device of alignment film; And
图3b是表示取向膜涂布装置中传墨辊与刮刀辊的示意图。Fig. 3b is a schematic diagram showing an ink transfer roller and a doctor roller in an alignment film coating device.
附图符号说明：Explanation of reference symbols:
12、23、34、35、W’～连接管路12, 23, 34, 35, W'～connecting pipeline
10～第一暂存容器10～The first temporary storage container
20～第二暂存容器20～Second Temporary Storage Container
30～混合容器30～mixing container
40～新鲜涂料容器40 ~ fresh paint container
50～过程药液供给容器50～process liquid supply container
54～传墨辊54～Ink transfer roller
80～取向膜涂料80～Orientation film coating
72～盛接容器72～container
82～传感器82～sensor
84～微微处理器84 ~ Microprocessor
86～控制阀86～control valve
88～管路88～Pipeline
70～废料桶70～Waste bin
74～管路74～Pipeline
A～流量计A～Flow meter
B1～刮刀B1～scraper
B1’～刮刀辊B1'～scraper roller
B2～挡板B2～Baffle
C～盛接容器C～Container
D～干燥装置D～drying device
E～金属离子去除装置E～Metal ion removal device
G～滚动面G～rolling surface
G’～凹槽G' ~ Groove
L1、L2～液位计L1, L2～liquid level gauge
J～注射器J ~ Syringe
K～湿度控制腔室K～humidity control chamber
M～微处理器M ~ Microprocessor
N～过滤器N～Filter
N2～氮气供给装置N2～nitrogen supply device
N2’～管路N2'～pipeline
P～取向膜涂布装置P～Alignment film coating device
P1～传墨辊P1～ink transfer roller
P2～转印辊P2～transfer roller
R～取向膜涂料回收系统R～Alignment Film Coating Recovery System
S～承载台S～carrying platform
S’～基板S'～substrate
T1～涂料回收管路T1～Paint recovery pipeline
T2～涂料供应管路T2～Paint supply pipeline
V～黏度检测计V～viscosity detector
W～废液瓶W～waste bottle
X～中心轴X～central axis
具体实施方式Detailed ways
首先参阅图2，该图是表示本发明中取向膜制作系统的示意图。如图所示，于本实施例中的取向膜制作系统主要是由一取向膜涂布装置P以及一取向膜涂料回收系统R所组成，其中取向膜材料为聚亚醯胺(polyimide)。上述取向膜涂布装置P主要是包括一传墨辊P1(anilox roller)、一转印辊P2(printingroller)、一刮刀B1(blade)以及一挡板B2，在图2中上述传墨辊P1以及转印辊P2分别依逆时针以及顺时针方向转动(如箭头方向所示)，因此当取向膜涂料由注射器J洒落于传墨辊P1后，可通过刮刀B1将涂料均匀地涂抹在传墨辊P1表面。此外，传墨辊P1转动时会将取向膜涂料转移至转印辊P2表面，接着再将取向膜材料以凸版印刷的方式转印涂布于位在承载台S上方的基板S’表面。特别地是，于本实施例中上述挡板B2是与该传墨辊P1表面接触，以将传墨辊P1表面上残余未利用的回收取向膜涂料刮除，并使涂料落入下方盛接容器C中以利于回收。Referring first to FIG. 2 , this figure is a schematic view showing an alignment film production system in the present invention. As shown in the figure, the alignment film production system in this embodiment is mainly composed of an alignment film coating device P and an alignment film paint recovery system R, wherein the alignment film material is polyimide. The above-mentioned alignment film coating device P mainly includes an ink transfer roller P1 (anilox roller), a transfer printing roller P2 (printing roller), a doctor blade B1 (blade) and a baffle B2, and in Fig. 2, the above-mentioned ink transfer roller P1 And the transfer roller P2 rotates counterclockwise and clockwise respectively (as shown by the direction of the arrow), so when the alignment film paint is sprinkled on the ink transfer roller P1 by the syringe J, the paint can be evenly applied to the ink transfer roller P1 by the scraper B1 Roller P1 surface. In addition, when the ink transfer roller P1 rotates, it will transfer the coating of the alignment film to the surface of the transfer roller P2, and then transfer and coat the alignment film material on the surface of the substrate S' above the carrier S by letterpress printing. In particular, in this embodiment, the above-mentioned baffle plate B2 is in contact with the surface of the ink transfer roller P1, so as to scrape off the remaining unused recycled alignment film paint on the surface of the ink transfer roller P1, and make the paint fall into the bottom to receive in container C for recycling.
如图2所示，使用过后的残余涂料是自传墨辊P1落入盛接容器C内，并经过涂料回收管路T1进入下方的取向膜涂料回收系统R。在本实施例中，上述回收管路T1内部设有流量计A、过滤器N以及干燥装置D，其中流量计A可检测回收管路T1内的聚亚醯胺流量，并传送一流量讯号至微处理器M，此外过滤器N以及干燥装置D则是用以在回收的过程中过滤聚亚醯胺的杂质以及水分以确保其品质。As shown in Figure 2, the residual paint after use is dropped into the receiving container C by the ink transfer roller P1, and enters the alignment film paint recovery system R below through the paint recovery pipeline T1. In this embodiment, a flow meter A, a filter N and a drying device D are arranged inside the recovery pipeline T1, wherein the flow meter A can detect the flow rate of polyimide in the recovery pipeline T1 and send a flow signal to The microprocessor M, the filter N and the drying device D are used to filter the impurities and moisture of the polyimide during the recycling process to ensure its quality.
上述聚亚醯胺首先经由回收管路T1进入第一暂存容器10，如图所示，上述第一暂存容器10内设有干燥装置D、黏度检测计V以及上、下液位计L1、L2(level meter)，其中干燥装置D可避免容器内的聚亚醯胺与水分作用而变质，而黏度检测计V则用以检测第一暂存容器10内聚亚醯胺的黏度，并传送一黏度讯号至上述微处理器M。此外，上、下两个液位计L1、L2分别用以检测第一暂存容器10内的极限液面高度，当聚亚醯胺存量不足或过量时会传送一警报讯号至微处理器M：例如当聚亚醯胺液面超过上液位计L1的一极限高度时，微处理器M会接收到上述警报讯号，而系统则立即将过量的聚亚醯胺经由连接管路12传输至第二暂存容器20内。The above-mentioned polyimide first enters the first temporary storage container 10 through the recovery pipeline T1, as shown in the figure, the above-mentioned first temporary storage container 10 is equipped with a drying device D, a viscosity detector V, and upper and lower liquid level gauges L1 , L2 (level meter), wherein the drying device D can prevent the polyimide in the container from deteriorating due to the action of moisture, and the viscosity detector V is used to detect the viscosity of the polyimide in the first temporary storage container 10, and Send a viscosity signal to the above-mentioned microprocessor M. In addition, the upper and lower liquid level gauges L1 and L2 are respectively used to detect the limit liquid height in the first temporary storage container 10, and when the polyimide stock is insufficient or excessive, an alarm signal will be sent to the microprocessor M : For example, when the polyimide liquid level exceeds a limit height of the upper liquid level gauge L1, the microprocessor M will receive the above-mentioned alarm signal, and the system will immediately transmit excessive polyimide to the Inside the second temporary storage container 20.
在图2中，连接管路12同样设有过滤器N以及干燥装置D以防止聚亚醯胺变质。如图所示，一第二暂存容器20与第一暂存容器10一样设有干燥装置D、黏度检测计V以及上、下液位计L1、L2等组件，并可与微处理器M之间传递电子讯号，因此可通过微处理器M监控各暂存容器中的聚亚醯胺存量与品质。如此一来，聚亚醯胺可被安全地存放在第一、第二暂存容器10、20，以利于进一步地回收使用。In FIG. 2 , the connecting pipeline 12 is also provided with a filter N and a drying device D to prevent deterioration of polyimide. As shown in the figure, a second temporary storage container 20, like the first temporary storage container 10, is provided with components such as a drying device D, a viscosity detector V, upper and lower liquid level gauges L1, L2, and can communicate with the microprocessor M Electronic signals are transmitted between them, so the quantity and quality of polyimide in each temporary storage container can be monitored by the microprocessor M. In this way, the polyimide can be safely stored in the first and second temporary storage containers 10, 20 for further recycling.
特别是，本发明的取向膜涂料回收系统R主要是通过将新鲜的取向膜涂料与使用过的回收取向膜涂料适当地混合，再将其回收使用。如图2所示，储存于第二暂存容器20中的聚亚醯胺以及储存于一新鲜涂料容器40的新鲜聚亚醯胺涂料可通过连接管路23、34分别传送到中央的混合容器30内，此外微处理器M可根据黏度检测计V各容器内所监测到的黏度数值，控制回收聚亚醯胺以及新鲜聚亚醯胺分别由连接管路23、34进入混合容器30的质量比例，如此一来可在混合容器30内将聚亚醯胺混合至一目标黏度，并可利于回收再使用。然而，亦可直接将第一暂存容器10内的聚亚醯胺传送至混合容器30进行混合，也可同样地达到上述功效。In particular, the alignment film recycling system R of the present invention mainly mixes the fresh alignment film paint with the used recycled alignment film paint properly, and then recycles them for use. As shown in Figure 2, the polyimide stored in the second temporary storage container 20 and the fresh polyimide paint stored in a fresh paint container 40 can be sent to the central mixing container through connecting pipelines 23, 34 respectively 30, in addition, the microprocessor M can control the quality of recycled polyimide and fresh polyimide entering the mixing container 30 through the connecting pipelines 23 and 34 according to the viscosity values monitored in each container of the viscosity detector V In this way, the polyimide can be mixed to a target viscosity in the mixing container 30, and it can be recycled and reused. However, the polyimide in the first temporary storage container 10 can also be directly transferred to the mixing container 30 for mixing, and the above effects can also be achieved in the same way.
更进一步，在混合容器30内混合后的聚亚醯胺涂料经由连接管路35传送至右方过程药液供给容器50中储存，并通过一涂料供应管路T2传送至上方取向膜涂布装置P中再度使用。特别是，在涂料供应管路T2中设有一金属离子去除装置E，其可为一电透析或化学层析装置，用以去除聚亚醯胺中的金属离子，以确保取向膜的特性。如前所述，通过本发明的取向膜涂布装置P以及取向膜涂料回收系统R，可使得聚亚醯胺涂料有效率地循环再使用，不仅可避免浪费同时可大幅地节省成本。Furthermore, the polyimide paint mixed in the mixing container 30 is sent to the right process liquid supply container 50 through the connecting pipeline 35 for storage, and is sent to the upper alignment film coating device through a paint supply pipeline T2 Used again in P. In particular, a metal ion removal device E is provided in the paint supply pipeline T2, which can be an electrodialysis or chemical chromatography device, to remove metal ions in polyimide to ensure the characteristics of the alignment film. As mentioned above, through the alignment film coating device P and the alignment film coating recovery system R of the present invention, the polyimide coating can be efficiently recycled, which can not only avoid waste but also greatly save costs.
然而，为了有效监控并确保系统中聚亚醯胺的品质，上述第一暂存容器10更通过一连接管路W’连接一废液瓶W，当第一暂存容器10内黏度计V检测到的聚亚醯胺黏度值超过容许范围时，便立即将第一暂存容器10内的聚亚醯胺排放至废液瓶W不再使用，直到容器内聚亚醯胺黏度回复至容许范围内为止，如此可避免品质不良的聚亚醯胺因回收误用而影响取向膜的品质。However, in order to effectively monitor and ensure the quality of polyimide in the system, the above-mentioned first temporary storage container 10 is further connected to a waste liquid bottle W through a connecting pipeline W', when the viscometer V in the first temporary storage container 10 detects When the polyimide viscosity value obtained exceeds the allowable range, the polyimide in the first temporary storage container 10 is immediately discharged to the waste liquid bottle W and is no longer used until the polyimide viscosity in the container returns to the allowable range In this way, poor quality polyimide can be avoided from affecting the quality of the alignment film due to recycling and misuse.
如图2所示，为了避免聚亚醯胺与系统流路中的水气作用而变质，上述第一、第二暂存容器10、20、混合容器30、新鲜涂料容器40以及过程药液供给容器50皆设置于一湿度控制腔室K内。此外，通过一氮气供给装置N2将干燥的氮气分别经由管路N2’注入上述各容器以及盛接容器C中，以防止管路内部的聚亚醯胺与水气接触，进而可确保聚亚醯胺的品质以利于回收使用。As shown in Figure 2, in order to avoid polyimide from deteriorating due to the action of water vapor in the system flow path, the above-mentioned first and second temporary storage containers 10, 20, mixing container 30, fresh paint container 40 and process liquid supply The containers 50 are all arranged in a humidity control chamber K. In addition, through a nitrogen gas supply device N2, dry nitrogen gas is injected into the above-mentioned containers and the receiving container C through the pipeline N2', so as to prevent the polyimide inside the pipeline from contacting with moisture, thereby ensuring that the polyimide The quality of the amine is good for recycling.
综上所述，由于各容器内均设有黏度检测计V、上、下液位计L1、L2以及干燥装置D，并与取向膜涂料回收系统R中的微处理器M联机，因此不仅可实时监控系统中的聚亚醯胺的品质参数，同时可通过各种干燥手段防止聚亚醯胺受潮而变质。此外，各连接管路设置有流量计A以精确地控制各容器聚亚醯胺存量以及混合聚亚醯胺的比例，因此可由此提供品质稳定且可回收利用的取向膜涂料。In summary, since each container is equipped with a viscosity detector V, upper and lower liquid level gauges L1, L2, and a drying device D, and is connected with the microprocessor M in the alignment film coating recovery system R, it can not only The quality parameters of the polyimide in the system are monitored in real time, and various drying methods can be used to prevent the polyimide from deteriorating due to moisture. In addition, each connecting pipeline is provided with a flow meter A to accurately control the polyimide stock in each container and the ratio of the mixed polyimide, thus providing a stable quality and recyclable alignment film coating.
接着参阅图3a，该图是表示取向膜涂布装置P中传墨辊P1与刮刀B1的示意图。如图所示，于本实施例中传墨辊P1与刮刀B1的滚动面G两侧边缘设有环状凹槽G’，环绕该中心轴X，当传墨辊P1绕中心轴X转动时，上方的刮刀B1同时沿中心轴X方向往复滑动，以将聚亚醯胺均匀地涂布在滚动面G上，其中剩余的聚亚醯胺涂料可被迅速地导入两侧的凹槽G’中，并落至上述盛接容器C内。此外如图3b所示，也可利用一刮刀辊B1’(doctorroller)取代上述刮刀B1，通过刮刀辊B1’与滚动面G间滚动同时沿中心轴X方向来回运动，由此可均匀地将聚亚醯胺均涂布于滚动面G上，同时可借助两侧的凹槽G’迅速地汇集残余涂料，进而有效率地将其导入上述盛接容器C中。Next, refer to FIG. 3 a , which is a schematic view showing the ink transfer roller P1 and the doctor blade B1 in the alignment film coating device P. Referring to FIG. As shown in the figure, in this embodiment, the edges of both sides of the rolling surface G of the ink transfer roller P1 and the scraper B1 are provided with annular grooves G', which surround the central axis X. When the ink transfer roller P1 rotates around the central axis X , the upper scraper B1 slides back and forth along the central axis X at the same time to evenly coat the polyimide on the rolling surface G, and the remaining polyimide coating can be quickly introduced into the groove G' on both sides and fall into the above-mentioned receiving container C. In addition, as shown in Figure 3b, a doctorroller B1' (doctorroller) can also be used to replace the above-mentioned doctorroller B1. By rolling between the doctorroller B1' and the rolling surface G while moving back and forth along the central axis X direction, the polymer can be uniformly The imide is coated on the rolling surface G, and at the same time, the residual coating can be quickly collected by means of the grooves G' on both sides, and then it can be efficiently introduced into the above-mentioned receiving container C.
通过本发明虽以较佳实施例披露如上，然其并非用以限定本发明的范围，任何本技术领域的普通技术人员，在不脱离本发明的精神和范围内，当然可做些许的更动与润饰，因此本发明的保护范围应当以权利要求书范围所界定的为准。Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person of ordinary skill in the art can certainly make some changes without departing from the spirit and scope of the present invention. and modification, therefore, the scope of protection of the present invention should be defined by the scope of the claims.
Claims (17)
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| CN100450640C (en) * | 2006-07-17 | 2009-01-14 | 友达光电股份有限公司 | spin coating system |
| US8911070B2 (en) | 2011-11-16 | 2014-12-16 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | System for recycling inkjet-printing material |
| CN102490473A (en) * | 2011-11-16 | 2012-06-13 | 深圳市华星光电技术有限公司 | Inkjet printing coating recycling system and method |
| JP5773053B1 (en) * | 2014-12-06 | 2015-09-02 | ウシオ電機株式会社 | Photo-alignment apparatus and photo-alignment method |
| CN105524627B (en) * | 2015-12-03 | 2017-12-01 | 阜阳欣奕华材料科技有限公司 | A kind of purification process and purification devices of liquid crystal aligning liquid waste liquid |
| CN106925492B (en) * | 2017-03-20 | 2019-04-05 | 京东方科技集团股份有限公司 | Coating fluid recyclable device and coating system |
| CN107367870B (en) * | 2017-07-28 | 2020-07-21 | 武汉华星光电技术有限公司 | Alignment film printing device and printing method thereof |
| CN120362083A (en) * | 2025-06-26 | 2025-07-25 | 宁德时代新能源科技股份有限公司 | Paint recycling device and method |
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| JP2001313242A (en) * | 2000-04-28 | 2001-11-09 | Shin Sti Technology Kk | Resist coating equipment |
| CN1457933A (en) * | 2002-04-10 | 2003-11-26 | 三协雷杰株式会社 | Fluid jet recorering device |
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| JP2001313242A (en) * | 2000-04-28 | 2001-11-09 | Shin Sti Technology Kk | Resist coating equipment |
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