An embodiment of the present invention relates to a silk-screen printing plate.
The silk-screen printing process has been applied to the frame sealant printing of the thin-film transistor-liquid crystal display (TFT-LCD) manufacturing process for many years. This process has the advantages of relatively low equipment investment cost and relatively low technological requirements, as compared to coating the frame sealant with a seal dispenser. Hence, it is currently widely applied in production lines of low-generation liquid crystal panels.
Silk-screen printing plate is a key component for forming a frame sealant in certain width. However, the conventional silk-screen has defined mesh numbers. When relatively low mesh numbers are desired to satisfy the requirement of printing a frame sealant mixed with an oversize spacer, a new silk-screen must be prepared, resulting in the waste of material and inconvenient operation.
An embodiment of the present invention provides a silk-screen printing plate, comprising at least two woven fibers, wherein, at least one of the woven fibers is soluble, such that the silk-screen printing plate will have a reduced mesh as the dissolution of the woven fiber(s).
For instance, in the embodiment of the present invention, each woven fiber is a polymer fiber or an inorganic fiber.
For instance, in the embodiment of the present invention, the silk-screen printing plate comprises three woven fibers, in which two of the woven fibers are soluble in different solvents.
For instance, in the embodiment of the present invention, the solvent can be selected from the group consisting of cyclohexanone, tetrahydrofuran, xylene, dimethylformamide (DMF), and solvents having similar properties with the above solvents.
For instance, in the embodiment of the present invention, the three woven fibers are nylon, a polyethylene fiber, and a glass fiber, respectively, in which the nylon is soluble in a cyclohexanone solvent, and the polyethylene fiber is soluble in a tetrahydrofuran solvent.
For instance, in the embodiment of the present invention, the three woven fibers are nylon, a polyethylene fiber, and a carbon fiber, respectively, in which the nylon is soluble in a cyclohexanone solvent, and the polyethylene fiber is soluble in a tetrahydrofuran solvent.
For instance, in the embodiment of the present invention, the three woven fibers are nylon, a polyethylene fiber, and a Kevlar fiber, respectively, in which the nylon is soluble in a cyclohexanone solvent, and the polyethylene fiber is soluble in a tetrahydrofuran solvent.
For instance, in the embodiment of the present invention, the three woven fibers are a polypropylene fiber, a polyurethane fiber, and a Kevlar fiber, respectively, in which the polypropylene fiber is soluble in a xylene solvent, and the polyurethane fiber is soluble in a DMF solvent.
The figures of the examples will be simply described in order to illustrate the embodiments of the present invention more clearly. It is apparent that the described figures represent only a portion of the examples of the present invention, rather than limiting the scope of the invention.
The embodiments of the present invention will be described clearly and completely hereinafter. It is apparent that the described embodiments represent only a portion of, rather than all of the embodiments of the present invention. Based on the embodiments of the present invention, persons of ordinary skill in the art can obtain other embodiments without creative work, all of which are encompassed within the present invention.
The embodiment of the present invention provides a silk-screen printing plate. As illustrated in
For instance, as illustrated in
The silk-screen printing plate provided by the embodiments of the present invention can be applied to frame sealant printing. The silk-screen printing plate is formed by two woven fibers, wherein, one of the woven fibers is soluble, for example, in an organic solvent, namely, the silk-screen printing plate has a mesh that can be changed through the dissolution of the woven fiber, as compared to the traditional silk-screen printing plate. When display panels corresponding to printing have consistent dimensions and have consistent arrangement on a glass substrate, the mesh of the silk-screen printing plate can be reduced through the dissolution of one woven fiber to produce the silk-screen printing plate as desired by the silk-screen printing process.
Therefore, the embodiment of the present invention provides a silk-screen printing plate, of which the mesh can be reduced according to printing needs with an easy operation.
Moreover, each of the woven fibers can be a polymer fiber or an inorganic fiber. The basic component of the polymer fiber is a polymer or a material which possesses the properties of a polymer contained therein as main characteristics thereof, such as, rubber, a fiber, plastics, a polymeric adhesive, a polymer coating, and a polymer-based composite material. The inorganic fiber is a chemical fiber made by taking minerals as a raw material, comprising without limitation a glass fiber, a quartz glass fiber, a boron fiber, a ceramic fiber, a metal fiber, and the like.
When the silk-screen printing plate is formed by weaving, the two woven fibers are alternately woven in warp direction and weft direction, such that the woven structure of the silk-screen printing plate can be maintained with reduced mesh after the soluble woven fiber is dissolved. The weaving structure of the at least two woven fibers can be any one conventionally used in the field of silk-screen printing plate. For instance, the silk-screen printing plate can be formed by the at least two woven fibers in plain weave, twill weave, full twist weave, half twist weave, and the like.
Moreover, in another embodiment, the silk-screen printing plate comprises three woven fibers, namely, the silk-screen printing plate is formed by the three woven fibers. As illustrated in
For instance, as illustrated in
The woven fibers can be dissolved in the solvent by immersing into the solvent, or can be dissolved by a steam treatment from the corresponding solvent.
All of the above three woven fibers can be polymer fibers or inorganic fibers, or one or two of them are polymer fibers and the remaining two or one are inorganic fibers. No further description will be given here.
When the silk-screen printing plate is formed by weaving, the three woven fibers are arranged sequentially to form a group of fibers, and the silk-screen printing plate is obtained by weaving a plurality of fiber groups in warp direction and weft direction. Therefore, each fiber occurs periodically in warp direction and weft direction, such that the woven structure of the silk-screen printing plate can be maintained with reduced mesh after the soluble woven fiber is dissolved. The weaving structure of the fiber groups can be any one conventionally used in the field of silk-screen printing plate. For instance, the silk-screen printing plate can be formed in plain weave, twill weave, full twist weave, half twist weave, and the like.
The figures only illustrate weaving portions of the silk-screen printing plate. The weaving portions are, for instance, fixed on a frame.
In two woven fibers of a silk-screen printing plate provided by the example, as illustrated in
Cyclohexanone is an important chemical raw material useful for an intermediate for preparing nylon, caprolactam, and adipate, and is also an important industrial solvent.
The silk-screen printing plate as shown in
In three woven fibers of a silk-screen printing plate provided by the example, as illustrated in
Tetrahydrofuran is a heterocyclic organic compound, which is one of the most polar ethers, and used as a solvent with medium polarity in chemical reaction and extraction.
The silk-screen printing plate as shown in
In three woven fibers of a silk-screen printing plate provided by the example, as illustrated in
The silk-screen printing plate as shown in
In three woven fibers of a silk-screen printing plate provided by the example, as illustrated in
The silk-screen printing plate as shown in
In three woven fibers of a silk-screen printing plate provided by the example, as illustrated in
Xylene is a transparent colorless liquid, and is a product formed by substituting methyl groups for two hydrogen atoms on a benzene ring, which has three isomers, i.e., o-isomer, m-isomer, and p-isomer. Xylene refers to a mixture of the three isomers in industry.
DMF is a transparent liquid, can be miscible with water and most organic solvents, and is a common solvent used in chemical reaction.
The silk-screen printing plate as shown in
The examples of the present invention are not limited thereto. The silk-screen printing plate provided by the embodiments of the present invention can also comprise more than three woven fibers. The woven fibers are alternately woven to foil the silk-screen printing plate, wherein at least one of the woven fibers is soluble, for instance, in an organic solvent.
When the silk-screen printing plate is formed by weaving, the more than three woven fibers are arranged sequentially to form a group of fibers, and the silk-screen printing plate is obtained by weaving a plurality of fiber groups in warp direction and weft direction. Therefore, each fiber occurs periodically in warp direction and weft direction. A silk-screen printing plate with desired mesh number can be obtained by dissolving one or more woven fibers in a proper solvent. Persons skilled in the art can easily select a proper solvent based on the type of the fibers used.
It should be understood that the soaking time of the silk-screen printing plate in various solvents is not limited to the periods of time listed above. If the concentration of the solvent is different, the dissolution time will also vary. For instance, the dissolution time may be within an range of 30 to 200 minutes, including every value within the range.
Obviously, various modifications and variants can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, if the modifications and variants of the present invention fall within the scope of the appended claims of the present invention and equivalents thereof, the present invention is also intended to cover such modifications and variants.
Number | Date | Country | Kind |
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2013 1 0066467 | Mar 2013 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2013/075714 | 5/16/2013 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2014/131249 | 9/4/2014 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
3871411 | Sato et al. | Mar 1975 | A |
20020098314 | Uchiyama | Jul 2002 | A1 |
20030015107 | Furukawa et al. | Jan 2003 | A1 |
Number | Date | Country |
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202669145 | Jan 2013 | CN |
2002-211155 | Jul 2002 | JP |
Entry |
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“Tetrahydrofuran (THF) Storage and Handling” by BASF published in 1998. |
“Polyester|Physical and Chemical Properties of Polyester” by Textile Technologist published on Jun. 26, 2012. |
International Search Report dated Nov. 18, 2013; PCT/CN2013/075714. |
Written Opinion of the International Searching Authority dated Nov. 19, 2013; PCT/CN2013/075714. |
Renying Zhang; “Several Key Factors of Selection Screen”, Screen Print Magazine, vol. 12, Dec. 25, 2012; 4 pages. |
First Chinese Office Action dated Jun. 5, 2014; Appln. No. 201310066467.1. |
Number | Date | Country | |
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20150352830 A1 | Dec 2015 | US |