Source: http://www.patentsencyclopedia.com/app/20120228805
Timestamp: 2018-02-24 08:45:16
Document Index: 800831911

Matched Legal Cases: ['application No. 110', '§119', 'art 111', 'arts 111', 'art 111', 'art 111', 'arts 3110']

USPC Class: 264460
Class name: Plastic and nonmetallic article shaping or treating: processes direct application of electrical or wave energy to work (e.g., electromagnetic wave, particulate, magnetic, induction heat, sonic, electrostatic energy, etc.) forming articles by uniting randomly associated particles
Patent application number: 20120228805
1. A method of manufacturing a fiber, the method comprising: preparing a solution comprising a functional particle and a carrier polymer; and drawing a fiber by spinning the solution.
2. The method of claim 1, wherein, in the preparing of the solution, the solution is prepared by dispersing a functional particle to a solution where the carrier polymer is dissolved.
3. The method of claim 1, wherein, in the drawing of the fiber by spinning the solution, a method of electrospinning forming an electric field at a region to which the solution is spun is used during spinning the solution.
4. The method of claim 1, wherein the functional particle comprises at least one of an electrically conductive particle, a far-infrared radiation particle, a fluorescent particle, a phosphorescent particle, and a magnetic particle.
5. The method of claim 4, wherein the electrically conductive particle comprises at least one of Ni, Ag, Cu, Au, Sn--Pb base, Sn--Ag base, Sn--Ag--Cu base, Sn--Bi base, Sn--Zn--Bi base, Sn--In base, Sn--Zn--Al base and Sn--Bi--Ag base, a compound of them, or a particle where an electric conductive film is coated on an outer surface of a polymer core.
6. The method of claim 1, wherein the carrier polymer comprises at least one or a compound of polyolefine, polystyrene, polyvinylalcohol, polyacrylonitrile, polyamide, polyester, aramide, acrylic, polythylene oxide (PEO), polycaprolactone, polycarbonate, polyethylene terephthalate, polybezimidazole (PBI), poly(2-hydroxyethylmethacrylate), polyvinylidene fluoride, poly(ether imide), styrene-butadiene-styrene triblock copolymer (SBS), poly(ferrocenyldimethylsilane), polyphenylenesulfide, and polyetheretherketone.
7. The method of claim 1, wherein, in the drawing of the fiber by spinning the solution, plural strands of the fiber are regularly arranged or irregularly arranged forming a net structure.
8. A method of manufacturing an adhesive, the method comprising: preparing a solution comprising a functional particle and a carrier polymer; drawing a fiber by spinning the solution; and forming an adhesive by allowing the fiber to subside into a binding resin.
9. The method of claim 8, wherein, in the drawing of the fiber by spinning the solution, a method of electrospinning forming an electric field at a region to which the solution is spun is used during spinning the solution.
10. The method of claim 8, wherein the forming of the adhesive comprises: preparing an adhesive film; arranging the fiber on the adhesive film; and allowing the fiber to subside into the adhesive film.
11. The method of claim 10, wherein the preparing of the adhesive film comprises: preparing a release film; and forming a binding resin layer by applying a binding resin solution on one side of the release film.
12. The method of claim 10, wherein the allowing of the fiber to subside into the adhesive film comprises applying heat and compressing pressure.
13. The method of claim 11, wherein the allowing of the fiber to subside into the adhesive film comprises allowing the fiber to subside into the binding resin layer of the adhesive film.
14. The method of claim 8, wherein an electrically conductive particle is used for the functional particle.
15. The method of claim 14, wherein the electrically conductive particle comprises at least one of Ni, Ag, Cu, Au, Sn--Pb base, Sn--Ag base, Sn--Ag--Cu base, Sn--Bi base, Sn--Zn--Bi base, Sn--In base, Sn--Zn--Al base and Sn--Bi--Ag base, a compound of them, or a particle where an electric conductive film is coated on an outer surface of a polymer core.
16. The method of claim 8, wherein the carrier polymer comprises at least one or a compound of polyolefine, polystyrene, polyvinylalcohol, polyacrylonitrile, polyamide, polyester, aramide, acrylic, polythylene oxide (PEO), polycaprolactone, polycarbonate, polyethylene terephthalate, polybezimidazole (PBI), poly(2-hydroxyethylmethacrylate), polyvinylidene fluoride, poly(ether imide), styrene-butadiene-styrene triblock copolymer (SBS), poly(ferrocenyldimethylsilane), polyphenylenesulfide, and polyetheretherketone.
[0001] This application is a Divisional Application of U.S. application Ser. No. 13/075,147, filed Mar. 29, 2011, which claims priority to Korean Patent application No. 110-2011-0022041 filed on Mar. 11, 2011 and all the benefits accruing therefrom under 35 U.S.C. §119, the contents of which are incorporated by reference in their entirety.
[0010] As the necessity of ultrafine pitch connection is increased, the importance of technology for applying an electrical stability in vertical direction and electrical selectivity in X-Y direction without undesired electric current between electrodes is increased ->.
[0016] The present disclosure also provides a fiber having excellent mechanical strength for easily bonding ultrafine connection parts, a fiber aggregate, an adhesive including the same, and manufacturing methods thereof.
[0022] A diameter of the electrically conductive particle may be approximately 0.1 nm to approximately 50 nm.
[0024] A diameter of the extension part forming the fiber may be approximately 10 nm to 100nm.
[0025] A weight ratio between the carrier polymer and the functional particle may be approximately 1:0.25-25.
[0028] A diameter of the functional particle including the polymer core and the electric conductive film coated on the outer surface of the polymer core may be approximately 0.1 nm to approximately 50 nm.
[0056] At a process of the drawing the fiber by spinning the solution, a method of electrospinning forming an electric field at a region to which the solution is spun may be used during spinning the solution.
[0062] At a process of the drawing the fiber by spinning the solution, a method of electrospinning forming an electric field at a region to which the solution is spun may be used during spinning the solution.
[0150] FIG. 12 is a magnified image of the fiber according to the present disclosure, and FIGS. 13A and 13B are magnified images for describing a relation between a thickness of the coating part embedding the functional particle and a diameter of the functional particle.
[0152] It is preferable to appropriately adjust a diameter of the functional particle 112 corresponding to a size of an electric connection part of an electronic component and a distance to a neighboring electric connection part. For instance, in the case of bonding with a width of approximately 200 μm and a distance of approximately 200 μm (pitch of approximately 400 μm, refer to FIG. 8) between electric connection parts, a relatively large conductive particle, e.g., an electrically conductive particle having a diameter of approximately 20 μm, may be used. Also, in the case where a distance between electric connection parts is a fine pitch ranging from approximately 20 μm to approximately 30 μm, the functional particle 112 having a diameter of approximately 3 μm may be used. Therefore, it is good to use the functional particle 112 for ACA (Anisotropic Conductive Adhesives) having a diameter ranging from approximately 0.1 μm to approximately 50 μm for bonding electronic components. More preferably, it is good to use the functional particle 112 for ACA having a diameter ranging from approximately 0.1 μm to approximately 20 μm.
[0153] Also, it is preferable that the carrier polymer 111 and the functional particle 112 included in the fiber 110 maintain a certain weight ratio for achieving the best efficiency even though a small amount of the functional particle 112 is used. For instance, it is preferable that a weight ratio between the carrier polymer 111 and the functional particle 112 is approximately 1:0.25-25. That is, in the case where a weight ratio of the functional particle 112 is too smaller than approximately 0.25 wt %, electrical conductivity cannot be sufficiently exhibited. In the case where a weight ratio of the functional particle 112 is too greater than approximately 25, a defect of short may occur when electronic components are bonded to each other, and manufacturing cost is increased because a large amount of functional particles is unnecessarily used.
[0160] Meanwhile, it is preferable that a diameter of the extension part 111a of the fiber 111 is approximately 10 nm to approximately 100 nm considering production quality during manufacture of an adhesive, or production processability during a thermocompression bonding process. For physically fixing distances between the coating parts 111b embedding the functional particles 112 with the maintenance of dispersed state, a diameter of the extension part 111a of the fiber 111 is limited as described above. For example, in the case of using an electrically conductive particle having a diameter of approximately 20 μm for the functional particle 112, it is preferable to maintain a diameter of the extension part 111a of the fiber 111 as approximately 10 μm.
[0171] Thereafter, as illustrated in FIG. 14D, pressure is applied to the first electronic component 3100 from bottom to top, and to the second electronic component from top to bottom while applying heat to the first and second connection parts 3110 and 4110 and the adhesive 300. Herein, heating and pressuring time is preferably several seconds to several tens of seconds, heating temperature is preferably approximately 120° C. to approximately 200° C. , and compressing pressure is preferably approximately 40 Mpa to approximately 80 Mpa.
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