CN102998721B - Method for coating diffusion film coating - Google Patents
Method for coating diffusion film coating Download PDFInfo
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- CN102998721B CN102998721B CN201210579556.1A CN201210579556A CN102998721B CN 102998721 B CN102998721 B CN 102998721B CN 201210579556 A CN201210579556 A CN 201210579556A CN 102998721 B CN102998721 B CN 102998721B
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Abstract
The invention discloses a method for coating a diffusion film coating and relates to the field of optical thin films of the plane display technology. The method comprises steps of cleaning and drying a substrate, coating an anti-scraping layer which is made of an anti-scraping layer material in advance, drying the anti-scraping layer, coating the diffusion film coating to the surface of the anti-scraping layer, and conducting infrared ray drying and drying. The method is a novel coating method and the good diffusion film coating can be prepared.
Description
Technical field
The present invention relates to field of optical films in flat panel display, particularly a kind of painting method route applying diffusion barrier layer in flat panel display on substrate.
Background technology
Three large major fields of modern high technology are material, the energy and information science.They constantly propose new performance requirement to material.In recent years, thin film technique had had the progress of advancing by leaps and bounds along with high-tech development.Due to mutual propelling and the combination of coating technique, membraneous material, surface physics three, making thin film technique become a comprehensive applied science, is the new emphasis of industrial development from now on.In some developed countries, thin film technique is applied by comprehensive.Except development optical thin film integrated circuit thin-film, liquid crystal display film, disk, CD film, also a large amount of cutter hard films, sun power film, gas sensor film, plastics metalizing goods, building glass membrane product, various decorating film and volume produced plates film product etc.Why film becomes the focus of research, and has broad application prospects, and is closely related with the following characteristics of membraneous material:
In many situations, performance and the effect of material function occur in material surface.As physical chemical phenomenons such as chemical catalysis, optical reflection, field emission, thermoelectron effusions.Using function membraneous material than using the not only reserved resource of body block functional material, and reduces costs.Membraneous material often has some performances not available for its block materials.This is because membraneous material easily forms thin crystalline substance, noncrystalline state, membraneous material is easily in metastable state, and film is nonstoichiometry ratio often, special material surface energy state etc.
Film plating process has wet method and dry method.Wet method comprises plating and electroless plating.Dry method comprises chemical vapour deposition technique (CVD) and physical vaporous deposition (PVD).The preparation of film often adopts PVD method and CVD.PVD method METAL HEATING PROCESS is gasified under vacuum or ultravacuum, by between gaseous atom or and do to protect to collide and be caught to combine on base material between the inert atom of gas to prepare film.CVD is the rete utilizing the thermal decomposition of gaseous substance, thermal synthesis or Chemical Transport etc. to generate solid deposited on base material.General depositing temperature is up to about 1000e, and some material is unable to bear high temperature, then can using plasma chemical vapour deposition technique.It promotes chemical reaction with gas discharge plasma, can operate at a lower temperature (500-600e) like this.CVD comprises the chemical vapor deposition (MOCVD) and metallorganics plasma activated chemical vapour deposition (MOPCVD) etc. of metallorganics.Colloidal sol in recent years-gel method plated film gets more and more people's extensive concerning, the advantages such as production cost is relatively low, plated film efficiency is high, plated film homogeneity is good that it has.The research of its application is very active, also plays an important role at development, the material modification and widening in purposes of new material.
Thin film coated is a kind of important Modern Surface Engineering Technology.Chemical composition, the institutional framework of coat can be completely different with matrix material.Coated film thickness is very little and dimension precision requirement is very high, can play the effect of 3 aspects: optimizing surface performance, carry out microfabrication and produce new functional material.But film often often there will be fold in coating procedure, striped, and the defect such as bubble.The quality of thin film coated machining process on forming thin film has important impact, but the most of researchist mainly preparation of Study of Thin coating and forming method, and the machining process route research of the coating of film is less, therefore the research of the complete application method of film coating is seemed and be even more important.
The inventive method is exactly in the coating procedure of film, easily occur some defects for current, in the coating processes process of optical thin film, also do not form a good complete application technique processing method, propose a kind of painting method applying a kind of diffusion barrier layer on substrate.
Summary of the invention
The object of the inventive method is to provide a kind of coating job operation of optical diffusion, produce a kind of good optical thin film, avoid occurring some defects in film formation process, yield rate is high, film-formation result good, thus improves the utilization factor of membraneous material and the functional effect of enhanced film.
To achieve these goals, the technical solution used in the present invention first adopts the method for Ultrasonic Cleaning to clean to light guide plate, then the scratch-resistant layer of the anti-scratch material composition of precoating layer is carried out on its surface, and drying process is carried out to it, again in this scratch-resistant layer surface coating one deck optical diffusion coating, finally infrared drying and dry process are carried out to it.Whole coating procedure is that the good optical thin film of preparation provides realistic basis.Concrete grammar is as follows:
1. Ultrasonic Cleaning: be sent in ultrasonic cleaning equipment through inlet conveyor by light guide plate to be cleaned, when substrate passes through and soaks in cleaning fluid (pure water) from rinse bath, substrate upper and lower surface just can be cleaned simultaneously.This is because ultrasound wave vibration plate is equipped with in the bottom of rinse bath, ultrasonic frequency controls within the scope of 28KHz-40KHz, the cavitation in the hole utilizing the ultrasound wave in this frequency range to produce in water is removed the dirt on substrate, the moment of breaking in hole can be released huge energy and be impacted being formed around hole, the dirt film of substrate surface is broken up and reaches the effect of decontamination.Facts have proved remove in this way big-and-middle size attachment particle very effective.
2. precoating: the scratch-resistant layer applying the anti-scratch material composition of one deck on the glass substrate, adopt intaglio printing mode to apply, the THICKNESS CONTROL of this scratch-resistant layer, between 1um-2um, then carries out drying and processing with drying baker at 55 DEG C-70 DEG C.This scratch-resistant layer has very stronger hardness and anti-scratch ability, when diffusion barrier and light guide plate contact, can effectively protect diffusion barrier not to be scraped off.
3. diffusion barrier coating: diffusion layer material adopts and be mixed into diffusion particle silicon dioxide in aromatic series saturated polyester, and the ratio of aromatic series saturated polyester and diffusion particle silicon dioxide is 10:0.8-10:1.5.First prepare diffusion layer coating emulsion, then utilize reverse gravure roll application mode to apply, the THICKNESS CONTROL of coating is between 2um-3um.The homogeneity no matter this coating method is applying, the accuracy of metering, or there is very large advantage speed aspect.
4. dry: in order to ensure good drying, being also reach maximum crystalline rate to help simultaneously, Coated Surface Temperature be made to maintain within the scope of 80 DEG C-125 DEG C.Suitable drying means is the key obtaining good coat.The most effective dry means are that infrared heating and dielectric heating combine, and adopt gradient-heated and gradient cooling means, namely coating surface temperature section increase, sub-sectional cooling.The most last stage adopts infrared heating, then by medium heated at high speed air, makes diffusion barrier layer be in the constant rate of speed heating period, finally uses infrared heating again.What complete that moisture content all removes with film is coalescent.Last after heat drying, coat film is cooled to less than 32 DEG C, preferably between 24 DEG C-30 DEG C, prevents from being stained with dust or self-adhesion occurring.
The innovation of painting method of the present invention is in the preparation field of optical thin film, provides a kind of novel thin film coated adding method, utilizes the method can apply out good functional film on substrate, thus makes it have good performance requirement.
Advantage of the present invention:
1. pair substrate carries out Ultrasonic Cleaning, and this cleaning method can remove stronger adhering contaminant on substrate, thus haves laid a good foundation for subsequent coated process.
2. between substrate and diffusion barrier layer, apply the scratch-resistant layer of the anti-scratch material composition of one deck, this scratch-resistant layer effectively can stop the wearing and tearing of diffusion particle (silicon dioxide) in substrate and diffusion barrier, thus effectively raises the diffusion effect of diffusion barrier.
3. diffusion barrier coating adopts reverse gravure roll application mode to apply, the homogeneity no matter this coating method is applying, the accuracy of metering, or there is very large advantage speed aspect.
4. will obtain good coat and just must have suitable drying means, adopt infrared heating and dielectric heating to combine in this method, and adopt gradient-heated and gradient cooling means, this drying means is the key obtaining good film coating.
5. this invention is the painting method route that the coating of diffusion barrier provides complete set, thus provides a kind of realistic basis for obtaining good diffusion barrier layer.
Accompanying drawing explanation
Fig. 1 is the coating job operation process flow diagram applying one deck diffusion barrier on light guide plate substrate.
Embodiment
To apply diffusion barrier on light guide plate substrate, this method method flow diagram as shown in Figure 1, concrete steps are: the first step, Ultrasonic Cleaning, are sent in ultrasonic cleaning equipment by TFT-LCD glass substrate to be cleaned through inlet conveyor, ultrasonic frequency controls at 28KHz-40KHz, transporting velocity is 3m/min, and pure water flow is 30L/min, now, clean best results, then carry out drying and processing with drying baker at about 60 DEG C.Second step, precoating, apply the scratch-resistant layer of the anti-scratch material composition of one deck on the glass substrate, adopt intaglio printing mode to apply, the THICKNESS CONTROL of this scratch-resistant layer is between 1um-2um.3rd step, dry, after precoating completes, at 55-70 DEG C, carry out drying and processing with drying baker.4th step, diffusion barrier applies, first preparation coating emulsion, and the proportioning of each composition of its coating emulsion is 10:1:0.5:0.36:3, concrete configuration weighs as follows: aromatic series saturated polyester 50kg, silicon dioxide 5kg, resin wax 2.5kg, algae emulsion 1.8kg, ion exchange water 15kg, after choosing weighing on request, first aromatic series saturated polyester emulsion is added in dosage bunker, then add resin wax.Resin is cured be first with resin cured add concentration that pure water is mixed be 30% the cured solution of resin after add silicon dioxide again, after stirring, add the algae emulsion by concentration 75%, add ion exchange water after stirring, just become coating emulsion used.Then reverse gravure roll application mode coating emulsion is adopted to apply.5th step, dry, after apply, after applying emulsion face applying on the adhesive, carry out infrared drying, can carry out in infared dryer, then use 90-120 DEG C of heated-air drying, cool at 30 DEG C afterwards.The coating of whole film completes.
Claims (6)
1. the painting method of a diffusion barrier layer, it is characterized in that: first utilize ultrasound wave to clean substrate, drying and processing is carried out to it, then substrate surface precoating layer anti-scratch material composition scratch-resistant layer and drying carried out to it process, utilize reverse gravure roll application mode to apply one deck diffusion barrier again on scratch-resistant layer surface, finally utilize infrared heating and dielectric heating to combine, and adopt gradient-heated and gradient cooling means to carry out drying process to it; Specifically comprise the following steps:
A) Ultrasonic Cleaning: be sent in ultrasonic cleaning equipment through inlet conveyor by light guide plate to be cleaned, passes through when substrate and when soaking in cleaning fluid, is cleaned the while of substrate upper and lower surface from rinse bath;
B) precoating: the scratch-resistant layer applying the anti-scratch material composition of one deck on the glass substrate, adopt intaglio printing mode to apply, the THICKNESS CONTROL of this scratch-resistant layer, between 1um-2um, then carries out drying and processing with drying baker at 55-70 DEG C;
C) diffusion barrier coating: diffusion layer material adopts and be mixed into diffusion particle silicon dioxide in aromatic series saturated polyester, and the ratio of aromatic series saturated polyester and diffusion particle silicon dioxide is 10:0.8-10:1.5; First prepare diffusion layer coating emulsion, then utilize reverse gravure roll application mode to apply diffusion layer coating emulsion coating, the THICKNESS CONTROL of diffusion barrier layer is between 2um-3um;
D) dry: infrared heating and dielectric heating combine, and adopt gradient-heated and gradient cooling, namely the temperature section of coating surface increase, sub-sectional cooling, Coated Surface Temperature is maintained within the scope of 80 DEG C-125 DEG C.
2. the painting method of a kind of diffusion barrier layer according to claim 1, it is characterized in that: described step D) in, the most last stage adopts infrared heating, then by medium heated at high speed air, diffusion barrier layer is made to be in the constant rate of speed heating period, finally use infrared heating again, what complete that moisture content all removes with film is coalescent; Last after heat drying, coat film is cooled to less than 32 DEG C.
3. the painting method of a kind of diffusion barrier layer according to claim 2, is characterized in that: last after heat drying, coat film is cooled between 24 DEG C-30 DEG C.
4. the painting method of a kind of diffusion barrier layer according to claim 1, it is characterized in that: described steps A) in, ultrasound wave vibration plate is equipped with in the bottom of rinse bath, ultrasonic frequency controls within the scope of 28KHz-40KHz, the cavitation in the hole utilizing the ultrasound wave in this frequency range to produce in water is removed the dirt on substrate, the moment of breaking in hole releases huge energy and impacts being formed around hole, and the dirt film of substrate surface is broken up and cleaning base plate upper and lower surface.
5. the painting method of a kind of diffusion barrier layer according to claim 1 or 4, is characterized in that: described steps A) in, cleaning fluid is pure water.
6. the painting method of a kind of diffusion barrier layer according to claim 1 or 2, it is characterized in that: described step C) in, the preparation method of described diffusion layer coating emulsion is: first aromatic series saturated polyester, silicon dioxide, resin wax, algae emulsion and ion exchange water are weighed according to mass ratio 10:1:0.5:0.36:3; After weighing, first aromatic series saturated polyester emulsion is added in dosage bunker, then add resin wax; Resin is cured be first with resin cured add concentration that pure water is mixed be 30% the cured solution of resin after, then add silicon dioxide, after stirring, add the algae emulsion by concentration 75%, add ion exchange water after stirring, just become coating emulsion used.
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| CN105700063A (en) * | 2016-04-12 | 2016-06-22 | 东莞轩朗实业有限公司 | Glass light guide plate |
| CN106166649B (en) * | 2016-07-22 | 2018-02-27 | 江苏大学 | The laser light conducting board processing method and device of a kind of high evenness |
| CN109049725B (en) * | 2018-07-31 | 2024-07-23 | 张家港卡福新材料有限公司 | Carrier type automatic cleaning method for floor forming |
| CN114167646A (en) * | 2021-12-03 | 2022-03-11 | 南京兰埔成新材料有限公司 | Preparation method of high-shading high-transmission low-haze back coating film for backlight display |
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| CN102565895A (en) * | 2011-12-28 | 2012-07-11 | 南京理工大学常熟研究院有限公司 | Optical diffusion film and method for preparing same |
| CN102593239A (en) * | 2011-10-11 | 2012-07-18 | 江苏大学 | Preparation method of latticed textured azo compound (AZO) transparent conductive membrane |
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| CN102593239A (en) * | 2011-10-11 | 2012-07-18 | 江苏大学 | Preparation method of latticed textured azo compound (AZO) transparent conductive membrane |
| CN102565895A (en) * | 2011-12-28 | 2012-07-11 | 南京理工大学常熟研究院有限公司 | Optical diffusion film and method for preparing same |
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Effective date of registration: 20220826 Address after: No. 1, Industrial Park, Shuangdian Town, Rudong County, Nantong City, Jiangsu Province, 226404 Patentee after: JIANGSU YUDI OPTICAL Co.,Ltd. Address before: 226404 Shuangdian Town Industrial Park, Rudong County, Nantong City, Jiangsu Province Patentee before: JIANGSU YUDI OPTICAL Co.,Ltd. Patentee before: JIANGSU University |