WO2007010684A1 - 複合多孔質樹脂基材及びその製造方法 - Google Patents
複合多孔質樹脂基材及びその製造方法 Download PDFInfo
- Publication number
- WO2007010684A1 WO2007010684A1 PCT/JP2006/311589 JP2006311589W WO2007010684A1 WO 2007010684 A1 WO2007010684 A1 WO 2007010684A1 JP 2006311589 W JP2006311589 W JP 2006311589W WO 2007010684 A1 WO2007010684 A1 WO 2007010684A1
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- WIPO (PCT)
- Prior art keywords
- porous resin
- base material
- frame plate
- electrode
- porous
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/119—Details of rigid insulating substrates therefor, e.g. three-dimensional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0116—Porous, e.g. foam
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/015—Fluoropolymer, e.g. polytetrafluoroethylene [PTFE]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09045—Locally raised area or protrusion of insulating substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09845—Stepped hole, via, edge, bump or conductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10378—Interposers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2018—Presence of a frame in a printed circuit or printed circuit assembly
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/368—Assembling printed circuits with other printed circuits parallel to each other
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
Definitions
- the present invention relates to a composite porous resin substrate in which a porous resin substrate on which an electrode and Z or a circuit are formed and a frame plate are combined.
- the composite porous resin base material of the present invention is, for example, an anisotropic conductive film used for electrical connection between two circuit devices, a semiconductor integrated circuit device (for example, a semiconductor chip), or the like. It can be suitably used for various connector or interposer applications such as an anisotropic conductive film used for electrical inspection of circuit devices such as printed circuit boards.
- electrode and z or circuit means an electrode or circuit or an electrode and circuit.
- Patent Document 1 uses an electrically insulating porous resin film as a base film, and a plurality of locations of the base film in the thickness direction from the first surface to the second surface A method is disclosed in which a plurality of through-holes penetrating through are provided, and then a conductive metal is attached to the grease portion of the inner wall surface of each through-hole to form a conduction portion.
- the conductive portion is obtained by adhering a conductive metal to the resin portion constituting the porous structure of the inner wall surface of the through hole by electroless plating or the like. Can be called.
- the adhesion amount of the conductive metal By adjusting the adhesion amount of the conductive metal, the conductivity in the film thickness direction of the cylindrical electrode can be controlled. Normally, by applying a load in the film thickness direction to the porous resin base material, the entire porous resin base material including the cylindrical electrode is compressed to conduct.
- This anisotropic conductive film is elastic in the film thickness direction and can conduct in the film thickness direction with a low compressive load.
- the anisotropic conductive film is used to fine-tune the size and pitch of each conductive part. can do.
- the anisotropic conductive film for example, as an anisotropic conductive film for inspection of a semiconductor integrated circuit device or the like, can obtain electrical conduction in the film thickness direction with a low compressive load, and can be repeatedly applied with a load. The film thickness is restored by elasticity and can be used repeatedly for inspection.
- each electrode of the circuit device corresponds to each electrode of the inspection device (checker or tester). It is necessary to connect correctly.
- each electrode of the inspection device is arranged on a rigid substrate, it is difficult to accurately connect each electrode of the circuit device and each electrode of the inspection device in correspondence with each other.
- there is a problem that the electrode is easily damaged by contact between the electrodes.
- an elastic anisotropic conductive film is interposed between the electrode region of the circuit device and the electrode region of the inspection device, and each electrode is electrically connected through the anisotropic conductive film.
- An anisotropic conductive film is provided with a plurality of conducting portions that can conduct only in the thickness direction.
- the conductive part is also called a conductive part or an electrode.
- the electrode pitch of the circuit device becomes finer, the conductive portion of the anisotropic conductive film is made finer, the anisotropic conductive film is interposed, and a pitch conversion board is additionally arranged on the circuit device side. It corresponds.
- each electrode of the circuit device and each electrode of the inspection device On the other hand, it is necessary to set and fix the positional relationship of the porous resin base material so that electrical connection can be made accurately.
- pinning is simple. For this purpose, a plurality of pin holes are provided in the peripheral portion of the porous resin base material, and the porous resin base material is fixed to a predetermined location of the inspection apparatus with the pins through the pin holes.
- the connector When the porous resin base material is disposed between a semiconductor integrated circuit device (for example, a semiconductor chip) and a circuit board such as a printed circuit board, the connector has a stress relaxation function and a conduction function. Or it can serve as an interposer. Also in this case, it is preferable to fix the porous resin base material in a predetermined position by pinning.
- the porous resin base material is based on a porous resin film rich in flexibility, If only pinned, the porous resin base material may be deformed during use or the peripheral force of the pin hole may be damaged, and the initially fixed position may not be maintained.
- a method of attaching a rigid frame plate to the peripheral portion of the porous resin base material can be considered.
- the frame plate is a metal plate having an opening, and the conductive portion of the porous resin base material is disposed in the opening. If a hole for pinning is made in the place where the frame plate exists and the porous resin base material is fixed to the circuit device through the hole through the pin, the deformation or breakage of the porous resin base material can be prevented. it can.
- the compression in the thickness direction of the porous resin base material is hindered, and it becomes difficult to conduct the conduction portion with a low compression load. Further, the elasticity of the entire porous resin base material is impaired by the rigid frame plate. Further, the presence of the frame plate hinders contact between the electrode and / or circuit of the porous resin base material and the electrode or circuit of the circuit device or inspection device.
- anisotropic conductive sheet anisotropic conductive film
- a frame plate by arranging a frame plate, the anisotropic conductive sheet is converted into an electric circuit.
- a method of holding and fixing parts with a specific positional relationship has been proposed.
- Patent Document 2 discloses an anisotropic conductive material in which a metal plate is arranged as a frame plate in the periphery of an anisotropic conductive sheet based on a rubber-like elastic body.
- Sex sheet anisotropic conductive elastomer sheet
- a frame plate having an opening is disposed in a molding die, and a polymer substance forming material containing conductive particles exhibiting magnetic properties is supplied.
- Form a molding material layer is supplied to a region including the upper and lower sides of the opening edge of the frame plate.
- a plurality of ferromagnetic layers and magnetic layers are alternately formed on the upper mold and the lower mold in the mold.
- the conductive particles exhibiting magnetism gather between the opposing ferromagnetic layers of the upper mold and the lower mold and are aligned in the thickness direction.
- an elastic polymer substance sheet anisotropic conductive sheet in which a plurality of conductive parts made of conductive particles oriented in the thickness direction is formed is obtained.
- JP 2002-324600 A uses a frame plate made of a magnetic material in order to solve the above problem of the method described in Patent Document 2, A method has been proposed in which conductive particles existing above and below are fixed to the opening edge of the frame plate to prevent them from gathering at the conductive portion forming portion near the frame plate.
- the technique of attaching the frame plate in the anisotropic conductive elastomer sheet disclosed in Patent Documents 2 and 3 can be applied to an anisotropic conductive film having a porous resin film as a base film.
- the polymer substance-forming materials disclosed in Patent Documents 2 and 3 exhibit fluidity in an uncured state, but become an elastic film (elastic polymer substance sheet) when cured.
- an electrode and Z or a circuit are usually formed after the porous resin film is formed. Since the porous resin film is generally made porous by a drawing process of the resin material, the opening edge of the frame plate is located at the peripheral edge of the porous resin film when the porous resin film is formed. It is difficult to make a composite with an embedded structure. is there. On the other hand, if the opening edge of the frame plate is embedded in the peripheral edge of the already formed porous resin film, the porous resin film is deformed or damaged.
- Patent Document 1 Japanese Patent Laid-Open No. 2004-265844
- Patent Document 2 Japanese Patent Laid-Open No. 11-40224
- Patent Document 3 Japanese Patent Laid-Open No. 2002-324600
- An object of the present invention is to provide a rigid frame plate that does not impair the performance and elasticity of the porous resin base material on which the electrode and Z or circuit are formed. It is an object of the present invention to provide a composite porous resin base material having a structure with an attached structure.
- the present inventors have found that the peripheral part surrounding the functional part of the porous resin base material having a functional part in which an electrode and Z or a circuit are formed.
- the inventors have conceived a method of forming a stepped portion having a height different from the height of the functional portion and arranging a frame plate on the surface of the stepped portion.
- a stepped portion having a height lower than that of the functional portion is formed, and a frame plate having a thickness smaller than the height of the stepped portion is disposed on the surface of the stepped portion.
- a method of hot pressing can be employed.
- the porous resin substrate can easily form a step by hot pressing.
- the elastomer present in the peripheral part is moved to the central part, so that the thickness of the functional part is likely to fluctuate or deform easily.
- the porous resin base material has a dense porous structure at the hot-pressed portion, but the thickness of the functional part where the electrode and Z or circuit are formed by forming a step by hot pressing. It does not change or change shape. Further, by controlling the hot press conditions, a step having a desired step and shape can be provided.
- the thickness of the frame plate is preferably smaller than the height of the step.
- the upper surface of the functional part is positioned above the upper surface of the frame plate. Elasticity and continuity in the functional part are not impaired. Since the functional part forming the electrode and Z or circuit protrudes upward, the contact between the electrode and Z or circuit of the functional part and the electrode or circuit of the circuit device or inspection device is not hindered.
- the rigidity is higher than that of the porous resin film which is the base film of the porous resin substrate!
- An arbitrary frame plate formed using a metal alloy material or a resin material can be used. After the frame plate is placed, a hole for pinning is provided at a desired location where the frame plate exists through the frame plate and the porous resin base material, and the electrode of the circuit device or inspection device is passed through the hole. If pinned to the region, the porous resin base material can be fixed and held in a predetermined positional relationship.
- the functional part on which the electrode and the Z or the circuit are formed may be formed after the frame plate is arranged. That is, a step portion is formed in the peripheral portion of the porous resin membrane, a frame plate is disposed on the step portion, and then the porous resin membrane portion (center portion) located in the opening of the frame plate is disposed. Electrodes and Z or circuits may be formed. In addition, a step is formed in the peripheral portion of the porous resin film, and an electrode and a Z or circuit are formed in the porous resin film portion (central portion) located in the opening of the frame plate. You may arrange
- step portion having a height different from the height of the functional portion in the peripheral portion surrounding the functional portion of the porous resin film having the functional portion in which the electrode and Z or the circuit are formed.
- a composite porous resin base material formed and having a frame plate disposed on the surface of the stepped portion.
- Step 2 of disposing a frame plate having a thickness smaller than the height of the step on the surface of the step portion;
- Step A forming a stepped portion having a height lower than the height of the central portion in the peripheral portion surrounding the central portion of the porous resin membrane A:
- step B a step B of disposing a frame plate having a thickness smaller than the height of the step on the surface of the step;
- the manufacturing method of the composite porous resin base material containing this is provided.
- Step I of forming a stepped portion having a height lower than the height of the central portion in the peripheral portion surrounding the central portion of the porous resin film;
- the manufacturing method of the composite porous resin base material containing this is provided.
- a rigid frame plate that does not impair the performance, such as elasticity and conduction, of the porous resin base material is formed on the porous resin base material on which the electrode and Z or circuit are formed.
- a composite porous resin substrate having an attached structure is provided.
- the composite porous resin base material of the present invention includes a frame plate having a small film thickness disposed in a stepped portion provided in the peripheral part of the porous resin film, wherein the electrode and the Z or circuit are provided. There is no loss of elasticity or conduction in the formed functional part. Protruding the functional part forming the electrode and Z or circuit does not hinder the contact between the electrode and Z or circuit of the functional part and the electrode or circuit of the circuit device or inspection device.
- FIG. 1 is a schematic view showing an example of a composite porous resin base material of the present invention.
- FIG. 2 is a flow chart showing an example of a production process for a composite porous resin base material of the present invention.
- FIG. 3 is an explanatory view showing the relationship between the height of the functional part, the height of the step part, and the thickness of the frame plate in the composite porous resin base material of the present invention.
- FIG. 4 is an explanatory view showing a method for forming a stepped portion by hot pressing.
- Porous resin film (base film):
- An anisotropic conductive film for burn-in test such as a semiconductor integrated circuit device is preferably excellent in heat resistance of the base film.
- the anisotropic conductive film needs to be electrically insulating in the lateral direction (the direction perpendicular to the film thickness direction). Therefore, the synthetic resin forming the base film of the porous resin base material needs to be electrically insulating.
- Examples of the synthetic resin material for forming the porous resin film used as the base film include polytetrafluoroethylene (PTFE), tetrafluoroethylene Z-hexafluoropropylene copolymer ( FEP), tetrafluoroethylene Z perfluoroalkyl butyl ether copolymer (PFA), polyvinylidene fluoride (PVDF), polyfluorovinylidene copolymer, ethylene Z tetrafluoroethylene copolymer ( Fluorine resin such as ETFE resin; Polyimide (PI), Polyamideimide (PAI), Polyamide (PA), Modified Polyphenylene ether (mPPE), Polyphenylene sulfide (PPS), Polyetheretherketone (PEEK) Engineering plastics such as polysulfone (PSU), polyethersulfone (PES), and liquid crystal polymer (LCP).
- PTFE polytetrafluoroethylene
- FEP tetrafluoro
- polytetrafluoroethylene which is preferred for fluorine resin, is particularly preferred from the viewpoints of heat resistance, processability, mechanical properties, dielectric properties, and the like.
- Examples of the method for producing a porous resin film made of a synthetic resin include a pore making method, a phase separation method, a solvent extraction method, a stretching method, and a laser irradiation method.
- the average pore size A stretching method is preferred in terms of easy control of the porosity.
- the porous resin film used as the base film of the anisotropic conductive film preferably has a porosity of about 20 to 80%. From the viewpoint of making fine pitches in the conductive part, it is preferable that the porous resin membrane has an average pore diameter of 10 m or less or a bubble point of 2 kPa or more. The following is preferable. The lower limit of the average pore diameter is about 0.05 m.
- the bubble point of the porous resin membrane is preferably 5 kPa or more, more preferably 10 kPa or more. The upper limit of bubble point is about 300kPa, but it is not limited to this.
- the film thickness of the porous resin membrane can be appropriately selected according to the purpose of use and use location. 1S Usually 20 to 3000 ⁇ m, preferably ⁇ is 25 to 2000 ⁇ m, more preferred ⁇ Is 30 ⁇ : LOOO ⁇ m. Therefore, the thickness of the porous resin membrane includes the regions of the film (less than 250 m) and the sheet (250 / z m or more). If the thickness of the porous resin film is too thin, it becomes difficult to form a stepped portion having a step enough to dispose a frame plate having an oka lj property.
- porous resin membranes porous polytetrafluoroethylene membrane obtained by stretching method
- stretched porous PTFE membrane is superior in heat resistance, workability, mechanical properties, dielectric properties, etc., and since it is easy to obtain a porous resin membrane with uniform pore size distribution, anisotropic conductive properties can be obtained. It is the most excellent material for the base film.
- the stretched porous PTFE membrane has a microstructure composed of a large number of fibrils and nodes, and a conductive metal such as plating particles can be adhered to the fibrils.
- the expanded porous PTFE membrane used in the present invention can be produced, for example, by the method described in JP-B-42-13560.
- liquid lubricant is mixed with PTFE green powder and extruded into a tube or plate by ram extrusion.
- the plate is rolled with a rolling roll.
- the liquid lubricant is removed from the extruded product or the rolled product.
- an unsintered stretched porous PTFE is obtained in the form of a film.
- the unsintered expanded porous PTFE membrane must be secured to prevent shrinkage.
- the stretched porous PTFE membrane has a microstructure composed of very thin fibrils formed by PTFE and nodes connected to each other by the fibrils. In a stretched porous PTFE membrane, this fine structure forms a porous structure!
- the first surface force is also applied to multiple locations of the base film made of the electrically insulating porous resin film formed of synthetic resin.
- a through-hole penetrating in the thickness direction is formed over the second surface, and then a conductive metal is attached to the porous structure (for example, fibrils) on the inner wall surface of each through-hole to conduct the film in the thickness direction.
- a plurality of conducting portions capable of imparting are independently formed.
- the conductive metal is attached by electroless plating, or a combination of electroless plating and electric plating, in which the plated particles are attached to the porous portion of the porous structure of the inner wall surface of each through hole. be able to.
- a method of providing a plurality of through holes in the thickness direction of the porous resin film and a method of forming a conductive portion (tubular electrode) by adhesion of a conductive metal on the inner wall surface of the through hole are particularly limited. However, for example, the method described below can be exemplified.
- an electroconductive metal is attached to the resin portion of the inner wall surface of the through hole e;
- the manufacturing method of the porous resin base material containing this can be mentioned.
- a resin material is preferably used as the material for the mask layer.
- a porous fluorine resin film is used as the porous resin film, it is preferable to use the same kind of porous fluorine resin film as the mask layer.
- a nonporous resin film or a porous resin film made of a resin material other than the above can also be used. From the viewpoint of the balance between fusibility between layers and peelability, it is preferable to use a porous resin film having the same quality as the porous resin film as the material of the mask layer.
- Mask layers are arranged on both sides of the porous resin membrane, and the three layers are generally integrated by fusion.
- a stretched porous PTFE membrane is used as the porous resin membrane, it is preferable to use the same stretched porous PTFE membrane as the mask layer.
- These three layers can be made into a laminate in which the respective layers are fused by thermocompression bonding. This laminate can be easily peeled off in a later step.
- a plurality of through-holes are formed in the laminate in the thickness direction.
- a method of forming a through hole i) a method of mechanically drilling, ii) a method of etching by an optical ablation method, iii) an ultrasonic head having at least one vibrator at the tip thereof, and the vibration
- a method of punching by applying ultrasonic energy by pressing the tip of the child For example, a method of punching by applying ultrasonic energy by pressing the tip of the child.
- a pressing method, a punching method, a drilling method or the like can be employed.
- a machining method for example, a through hole having a relatively large diameter of 50 m or more, in many cases 75 ⁇ m or more, and further 100 ⁇ m or more can be formed inexpensively. This can be done by forming through holes with a smaller diameter by machining.
- the through-hole is formed by the optical ablation method
- light is applied to the surface of the laminate through a light shielding sheet (mask) having a plurality of independent light transmission parts (openings) in a predetermined pattern.
- a method of forming a pattern-like through hole by irradiating Light is transmitted through the plurality of openings of the light shielding sheet, and the irradiated portions of the laminate are etched to form through holes.
- this method for example, it is possible to form a through hole having a relatively small diameter of 10 to 200 m, often 15 to 150 ⁇ m, and more preferably 20 to: LOO ⁇ m.
- Examples of irradiation light in the optical abrasion method include synchrotron radiation light and laser light.
- a pattern-shaped through-hole is formed by applying ultrasonic energy to the laminate using an ultrasonic head having at least one vibrator at the tip. Ultrasonic energy is applied only to the vicinity of the contact of the tip of the vibrator, the temperature rises locally due to the vibrational energy of the ultrasonic wave, the resin is easily cut and removed, and a through hole is formed. .
- a method in which a porous polymer of the porous fluororesin sheet is impregnated with a soluble polymer such as polymethyl methacrylate or paraffin in a solution or in a molten state and solidified before being perforated is adopted. You can also. This method is preferable because the porous structure of the inner wall of the through hole is easily retained. After drilling, the soluble polymer or paraffin can be removed by dissolving or melting.
- the shape of the through-hole is arbitrary, such as a circle, an ellipse, a star, an octagon, a hexagon, a quadrangle, and a triangle.
- the diameter of the through-hole can be reduced to usually 5 to: LOO / z m, and further to 5 to 30 m in a field of application where a small-diameter through-hole is suitable.
- through-holes with relatively large diameters are suitable, and penetration: fL diameters are usually 50-3000 ⁇ m, many ⁇ 75-2000 ⁇ m and even 100-1500 / ⁇ ⁇ Can be bigger. It is preferable to form a plurality of through holes in a predetermined pattern according to the distribution of electrodes of a circuit device such as a semiconductor integrated circuit device or a printed circuit board.
- the laminate In order to attach a catalyst that promotes the reduction reaction of metal ions (also referred to as "plating catalyst”) to the surface of the laminate including the inner wall surface of the through-hole, the laminate is treated with, for example, a palladium-tin colloid catalyst application liquid And soaking with sufficient stirring.
- a catalyst that adheres to and remains on the inner wall surface of the through hole a conductive metal is selectively attached to the inner wall surface.
- the method for attaching the conductive metal include the electroless plating method, the sputtering method, and the conductive metal paced coating method. Among these, the electroless plating method is preferable.
- the catalyst for example, palladium soot
- the catalyst is activated.
- the conductive metal plated particles
- the conductive metal include copper, nickel, silver, gold, nickel alloy, etc.
- the plating particles are deposited so as to be entangled with the resin portion (mainly fibrils) exposed on the inner wall surface of the through hole of the stretched porous PTFE membrane.
- the adhesion state of the conductive metal can be controlled.
- a conductive metal layer is formed while maintaining a porous structure, and it is possible to provide elasticity in the film thickness direction as well as elasticity.
- the thickness of the microporous structure is preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less, and even more preferably 1 ⁇ m. m or less.
- the particle diameter of the conductive metal is preferably about 0.001 to 5 / ⁇ ⁇ .
- the amount of conductive metal deposited is preferably about 0.01 to 4. OgZml in order to maintain the porous structure and elasticity.
- the conductive part (cylindrical electrode) produced as described above is preferably coated with a noble metal or a noble metal alloy in order to improve oxidation prevention and electrical contact. Good.
- a noble metal or a noble metal alloy As noble metals, noradium, rhodium and gold are preferred because of their low electrical resistance.
- the thickness of the coating layer is preferably 0.005 to 0.5 m, more preferably 0.01 to 0.1 m.
- a cylindrical electrode having a structure in which conductive metal particles adhere to the fibril is formed on the inner wall surface of the through hole.
- a stress in the thickness direction is applied to the porous fluororesin base material, the distance between the fibrils is reduced, so that the stress is relaxed and the structure of the cylindrical electrode is maintained without being destroyed. Therefore, even if a compressive force is repeatedly applied to the stretched porous PTFE base material, the cylindrical electrode is unlikely to deteriorate.
- the cylindrical electrode has a structure in which a conductive metal adheres only to the inner wall surface of the through hole provided in the thickness direction of the porous fluororesin film.
- a conductive metal adheres only to the inner wall surface of the through hole provided in the thickness direction of the porous fluororesin film.
- the contact area with Z or the electrode of the semiconductor chip can be increased.
- electrodes and circuits having various structures can be formed on the porous resin base material used in the present invention.
- a plating catalyst is applied to the porous resin film in the same pattern as the shape of the electrode or circuit, and the plating catalyst is used to form an electrode by electroless plating or a combination of electroless plating and electrolytic plating.
- there is a method of forming a circuit there is a method of forming a circuit.
- the porous resin base material is provided with a functional part having an electrode and Z or a circuit.
- a functional part having an electrode and Z or a circuit.
- an electrode and a z or circuit are formed around the functional part. It has a place.
- a frame plate that is higher than the porous resin film constituting the base film of the porous resin base material and is formed of a rigid material force.
- Typical materials for forming the frame plate include metal materials, ceramic materials, and resin materials.
- Examples of the metal material constituting the frame plate include copper, nickel, chromium, cobalt, iron, magnesium, manganese, molybdenum, indium, lead, palladium, titanium, tandastene, aluminum, gold, platinum, and silver. And alloys containing two or more of these metals, such as stainless steel.
- Examples of the resin material constituting the frame plate include polyester, polyamide, fluorine resin, various engineering plastics, elastomers, etc. Among these, heat resistance having a melting point or glass transition temperature of 150 ° C or higher A preferred resin material is preferred. The melting point and glass transition temperature are values measured by a differential scanning calorimeter (DSC).
- Examples of the heat-resistant resin material constituting the frame plate include polybutylene terephthalate, polyethylene terephthalate, nylon 6, nylon 66, nylon 46, polyphenylene sulfide, polyether ether ketone, wholly aromatic polyester.
- These resin materials can be blended with fibrous fillers such as glass fibers, granular or powdery inorganic fillers, etc., in order to improve heat resistance and strength.
- the method of forming the resin material into the shape of the frame plate is not particularly limited, and any method such as injection molding, compression molding, extrusion molding, or the like can be used.
- the frame plate may be a stretched resin material.
- the frame plate may be a cross-linked or hardened material after molding the resin material.
- the thickness of the frame plate is usually 5 to 1500 ⁇ m, preferably 10 to: LOOO ⁇ m, more preferably 20 to 700 ⁇ m. If the thickness of the frame plate is too thin, it will be difficult to obtain sufficient rigidity and strength depending on the material. If the thickness of the frame plate is too thick, handling of the composite porous resin base material becomes difficult.
- the frame plate usually has a frame shape having an opening, but the shape of the opening and the shape of the opening can be arbitrarily selected according to the shape of the porous resin substrate and the shape of the functional part. Can be designed.
- the size of the frame plate can be arbitrarily designed according to the shape of the porous resin base material as long as the reinforcing effect can be achieved. However, it is necessary to have a portion that is thick enough to make a hole for pinning.
- the composite porous resin base material 1 has a functional part 3 in which a conductive part (cylindrical electrode) 4 is formed on a porous resin film 2, and a peripheral part (porous material) surrounding the functional part.
- a step portion 5 having a height lower than the height of the functional portion is formed on a portion of the resin film only. On the surface of the stepped portion 5, there is a step height.
- a pinning hole 7 is formed through the frame plate 6 and the stepped portion 5 of the porous resin base material.
- the pinning hole 7 can be formed by an arbitrary method such as a mechanical drilling method, an optical abrasion method, or a drilling method using ultrasonic energy.
- a frame plate in which holes for pinning are formed in advance may be used, but in this case, the stepped portion of the porous resin base material in the lower layer is drilled using the pinning holes in the frame plate. To do.
- FIG. 2 is a process diagram showing an example of a method for producing a composite porous resin base material.
- the porous resin base material 21 has a functional part 203 in which a conduction part (cylindrical electrode) 204 is formed at the central part of the porous resin film 202.
- a stepped portion 205 having a height lower than the height of the functional portion 203 is formed in the peripheral portion surrounding the functional portion 203 of the porous resin base material 21 by heating press.
- a frame plate 206 having a thickness smaller than the height of the step is disposed on the surface of the stepped portion 205 to produce the composite porous resin base material 23.
- the height b of the stepped portion is usually 20 to 90%, preferably 30 to 80%, more preferably 40 to 70% of the thickness a of the porous resin base material. If the height b of the step is too high, the thickness d of the frame plate cannot be made sufficiently thick. If the height b of the stepped portion is too low, the elasticity of the entire porous resin base material may be impaired, or deformation may occur during hot pressing.
- the height difference e between the upper surface of the functional part 3 and the upper surface of the frame plate 6 is a force depending on the thickness of the porous resin base material, usually 2 to 500 ⁇ m or more, preferably 3 to 400 ⁇ m. More preferably, it is 5 to 300 ⁇ m. If this difference e is too short, the elasticity of the functional part is impaired, and connection with the electrodes of the circuit device becomes difficult. If this difference e is too long, an excessive compressive force may be generated in the functional part. Since the functional part 3 protrudes moderately, it is possible to achieve conduction with a circuit device or the like with a low load.
- the method of forming the stepped portion is not particularly limited! However, the hot press method is preferred.
- the hot press method for example, as shown in FIG. 4, two molds 401 and 402 are used.
- the porous resin substrate 403 is placed on the substrate.
- the upper mold 402 is hot-pressed and fitted into the lower mold 401.
- the shape of the step portion and the height of the step can be controlled. If the mold is removed after hot pressing, a porous resin base material 404 having a step is obtained.
- the heating temperature at the time of hot pressing is a temperature that is less than the thermal decomposition temperature of the resin material constituting the porous resin material, and can be appropriately set depending on the type of the resin material.
- the base membrane is a stretched porous fluororesin membrane such as a stretched PTFE membrane
- it is usually 200 to 320 ° C, preferably 250 to 310 ° C.
- the pressure is a pressure at which the upper and lower molds are held together.
- the pressurization time can be appropriately set according to the type of the resin material under the condition that the shape of the stepped portion is fixed.
- the force is usually sufficient for 100 to 1000 seconds, preferably 200 to 800 seconds, but is not limited thereto.
- a method other than the heat press method may be employed.
- a force that can increase mechanical force such as cutting, in general, it is difficult to cut a thin porous resin substrate with an accurate film thickness. Absent.
- the step portion can be formed by the optical abrasion method, it is difficult to efficiently etch a wide region.
- the frame plate may be simply placed on the stepped portion! However, it can be adhered or adhered to the stepped portion using an adhesive or a pressure-sensitive adhesive. Adhering or sticking the frame plate to the stepped part facilitates the formation of pin holes and positioning when pinning. Use of an adhesive makes it easier to reuse the frame plate.
- the adhesive or pressure-sensitive adhesive is fixed by adhering or sticking between the metal material, ceramic material, resin material, etc. constituting the frame plate and the resin material constituting the porous resin substrate. It is desirable to select what can be done.
- Examples of the adhesive include poly (butyl acetate), poly (butyl alcohol), poly (butyral), polyvinyl acetal, polyolefin, polyvinyl chloride, poly (methyl methacrylate), polystyrene, polyamide, Thermoplastic resin adhesives such as polyisobutylene, heat-melting fluorine resin, modified polyphenylene ether resin, urea resin, melamine resin, phenol resin, resorcinol resin Epoxy resin , Polyurethane-based, unsaturated polyester-based thermosetting resin-based adhesives; black-prene rubber, nitrile rubber, SBR, SBS, SIS, butyl rubber, polysulfide, silicone rubber, etc. Forces that can include, but are not limited to, one-system adhesives.
- These adhesives can be applied to the adhesive surface in various forms such as a solution, emulsion, and solvent-free.
- the adhesive can be applied to the adhesive surface in the form of a film or sheet (dry film).
- Hot melt adhesives can be applied to the adhesive surface by heating and melting.
- the bonding surface is the upper surface of the stepped portion or the lower surface of the frame plate.
- Examples of the pressure-sensitive adhesive include a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive.
- Rubber adhesives include solvent adhesives such as natural rubber, styrene butadiene, polyisobutylene, and isoprene; styrene isoprene block copolymer, styrene butadiene block copolymer, styrene ethylene-butylene block copolymer And hot-melt adhesives such as ethylene acetate butyl thermoplastic elastomers.
- Acrylic pressure-sensitive adhesives include a solution type and an emulsion type. These pressure-sensitive adhesives can also be applied by a method of applying to the pressure-sensitive adhesive surface, like the adhesive. Double-sided adhesive tape may be placed on the adhesive surface and the stepped part and the frame plate fixed by adhesion
- the composite porous resin substrate of the present invention can be produced using a porous resin substrate in which electrodes and Z or circuits are formed in advance.
- a step was provided in the porous resin film (base film), and a frame plate was placed on the step.
- a composite porous resin base material can be produced by forming an electrode and Z or a circuit in a portion (center portion) of the porous resin film corresponding to the opening of the frame plate.
- the method for forming the electrode and Z or the circuit is as described above.
- a porous resin layer is laminated on both sides of the porous resin film as a mask layer.
- the laminate is hot-pressed to provide a step in the porous resin film, and then an electrode and a Z or circuit are formed. It is preferable to prevent the occurrence of poor conduction of electrodes and Z or circuit due to hot pressing at high temperature.
- Porosity (ASTM-D-792) 60%, average pore size 0.1 m, bubble point (measured according to ASTM-F-316-76 using isopropyl alcohol) 150 kPa, thickness 600 m
- Two stainless steel plates with a thickness of 3 mm were placed on both sides of a base membrane made of a stretched porous PTFE membrane, with a stretched porous PTFE sheet with a porosity of 60%, an average pore size of 0.1 ⁇ m, and a thickness of 30 ⁇ m.
- the sample was sandwiched between the two, and a load was applied, and heat treatment was performed at 350 ° C for 30 minutes. After heating, the steel plate was quenched with top-strength water to obtain a porous PTFE membrane laminate fused in three layers.
- the laminate obtained as described above was cut into a 40 mm square. This sample was hot-pressed using the mold shown in Fig. 4 (heating temperature 300 ° C, pressing time 600 seconds), and a step with a step of 300 ⁇ m and a width of 10 mm was formed around the periphery of the base film. To be formed.
- a drill is operated at a rotational speed of 100, OOOZ, and a feed speed of 0. Olmm / rev.
- a through hole with a diameter of 250 ⁇ was drilled at the location.
- Degrease treatment by immersing the laminate with through-holes in ethanol for 1 minute to make it hydrophilic and then immersing it in Melplate PC-321 made by Meltex Co., Ltd. diluted in lOOmlZL for 4 minutes at a temperature of 60 ° C. Went.
- the laminate was immersed in 0.8% hydrochloric acid at a ratio of 180 gZL of Meltex Co., Ltd.'s PC-236 for 2 minutes. .
- the laminate was manufactured by Meltex Co., Ltd. in an aqueous solution in which 3% of Enpactactivator 444 manufactured by Meltex Co., Ltd., 1% of Enpactactivator Additive and 3% of hydrochloric acid were dissolved.
- Enplate PC-236 was immersed in a solution of 150 gZL at a rate of 150 gZL for 5 minutes to allow the catalyst particles to adhere to the surface of the laminate and the wall surface of the through hole.
- the laminated body is melted ( The plate was immersed in a 5% solution of Enplate PA-360, Inc. for 5 minutes to activate the radium catalyst core.
- the first and third mask layers were peeled off to obtain a porous PTFE membrane in which catalytic palladium particles adhered only to the inner wall surface of the through hole.
- gold plating was performed.
- the substitution gold plating method from nickel was adopted by the following method.
- a porous PTFE membrane with copper particles attached to the inner wall surface of the through-hole is immersed as a pre-dip for 3 minutes in Atotech's activator sip tech SIT additive (80mlZL), then applied as a catalyst for Atotech sip tech Immerse in SIT Activator Conc (125ml / L), Atotech Activator One-Ship Tech SIT Additive (80ml / L) for 1 minute, and then Atotech One-Site Tech SIT Post Dip (25mlZL) for 1 minute The catalyst was deposited on the copper particles by dipping.
- a base film was applied to an electroless nickel plating solution bathed with sodium hypophosphite (20 gZL), trisodium citrate (40 gZL), ammonium borate (13 gZL), and nickel sulfate (22 gZL).
- sodium hypophosphite (20 gZL), trisodium citrate (40 gZL), ammonium borate (13 gZL), and nickel sulfate (22 gZL).
- Wetex replacement gold plating solution [Melplate AU-6630A (200mlZL), Melplate AU-6630B (100mI ZL), Melplate AU-6630C (20mlZL), sodium sulfite aqueous solution (1.OgZL as gold)
- the base film was soaked for 5 minutes, and a gold coating of conductive particles was performed.
- the composite porous resin base material of the present invention is, for example, an anisotropic conductive film used for electrical connection between two circuit devices!
- the kite can be suitably used as an anisotropic conductive film used for electrical inspection of a circuit device such as a semiconductor integrated circuit device or a printed circuit board.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Laminated Bodies (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Structure Of Printed Boards (AREA)
- Non-Insulated Conductors (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Hybrid Cells (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06757212A EP1912286A4 (en) | 2005-07-19 | 2006-06-09 | POROUS RESIN COMPOSITE MATERIAL AND METHOD FOR MANUFACTURING THE SAME |
CN2006800265330A CN101228667B (zh) | 2005-07-19 | 2006-06-09 | 复合多孔树脂基材及其制造方法 |
KR1020087003769A KR101204621B1 (ko) | 2005-07-19 | 2006-06-09 | 복합 다공질 수지기재 및 그 제조방법 |
US11/988,723 US20090081419A1 (en) | 2005-07-19 | 2006-06-09 | Composite Porous Resin Base Material and Method for Manufacturing the Same |
HK08111750.9A HK1115943A1 (en) | 2005-07-19 | 2008-10-24 | Composite porous resin base material and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-208286 | 2005-07-19 | ||
JP2005208286A JP4604893B2 (ja) | 2005-07-19 | 2005-07-19 | 複合多孔質樹脂基材及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007010684A1 true WO2007010684A1 (ja) | 2007-01-25 |
Family
ID=37668570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/311589 WO2007010684A1 (ja) | 2005-07-19 | 2006-06-09 | 複合多孔質樹脂基材及びその製造方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090081419A1 (ja) |
EP (1) | EP1912286A4 (ja) |
JP (1) | JP4604893B2 (ja) |
KR (1) | KR101204621B1 (ja) |
CN (1) | CN101228667B (ja) |
HK (1) | HK1115943A1 (ja) |
TW (1) | TWI378603B (ja) |
WO (1) | WO2007010684A1 (ja) |
Families Citing this family (14)
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---|---|---|---|---|
JP2008218285A (ja) * | 2007-03-06 | 2008-09-18 | Sumitomo Electric Ind Ltd | 異方導電性シートの形成方法 |
EP2461426B1 (en) | 2009-09-02 | 2016-11-23 | Polymatech Japan Co., Ltd. | Anisotropic conductor, method for manufacturing anisotropic conductor, and anisotropic conductor arrangement sheet |
TWI498923B (zh) * | 2013-09-23 | 2015-09-01 | Taiwan Green Point Entpr Co | Plastic body with conductive wiring layer and its making method |
KR101522780B1 (ko) * | 2013-10-07 | 2015-05-26 | 삼성전기주식회사 | 전자부품 내장 인쇄회로기판 및 그 제조방법 |
EP3146560A4 (en) * | 2014-05-23 | 2018-04-18 | Materion Corporation | Air cavity package |
JP6560156B2 (ja) * | 2015-05-07 | 2019-08-14 | 信越ポリマー株式会社 | 異方導電性シートおよびその製造方法 |
TWI548315B (zh) * | 2015-07-31 | 2016-09-01 | 臻鼎科技股份有限公司 | 電路基板及其製作方法、電路板和電子裝置 |
CN106413271B (zh) * | 2015-07-31 | 2019-04-26 | 鹏鼎控股(深圳)股份有限公司 | 电路基板及其制作方法、电路板和电子装置 |
KR102547818B1 (ko) * | 2015-12-15 | 2023-06-26 | 삼성전자주식회사 | 커넥터 어셈블리 |
JP6454766B2 (ja) * | 2017-04-27 | 2019-01-16 | 株式会社Jmt | 異方導電性シートおよび異方導電性シートを用いた電気的接続装置 |
JP7080879B2 (ja) | 2017-05-18 | 2022-06-06 | 信越ポリマー株式会社 | 電気コネクターおよびその製造方法 |
JP7102402B2 (ja) * | 2017-05-31 | 2022-07-19 | 日東電工株式会社 | ポリテトラフルオロエチレン及び充填剤を含有する板状の複合材料 |
JP7175132B2 (ja) * | 2018-08-10 | 2022-11-18 | 信越ポリマー株式会社 | 電気コネクターの製造方法 |
TWI742642B (zh) * | 2020-05-05 | 2021-10-11 | 泰可廣科技股份有限公司 | 具有斜向導線式導電膠片的電連接組件 |
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2005
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2006
- 2006-06-09 KR KR1020087003769A patent/KR101204621B1/ko not_active IP Right Cessation
- 2006-06-09 CN CN2006800265330A patent/CN101228667B/zh not_active Expired - Fee Related
- 2006-06-09 US US11/988,723 patent/US20090081419A1/en not_active Abandoned
- 2006-06-09 WO PCT/JP2006/311589 patent/WO2007010684A1/ja active Application Filing
- 2006-06-09 EP EP06757212A patent/EP1912286A4/en not_active Withdrawn
- 2006-07-06 TW TW095124571A patent/TWI378603B/zh not_active IP Right Cessation
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2008
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Also Published As
Publication number | Publication date |
---|---|
HK1115943A1 (en) | 2008-12-12 |
EP1912286A1 (en) | 2008-04-16 |
JP4604893B2 (ja) | 2011-01-05 |
US20090081419A1 (en) | 2009-03-26 |
CN101228667A (zh) | 2008-07-23 |
TWI378603B (en) | 2012-12-01 |
EP1912286A4 (en) | 2011-04-06 |
KR20080036197A (ko) | 2008-04-25 |
KR101204621B1 (ko) | 2012-11-27 |
TW200707848A (en) | 2007-02-16 |
JP2007026922A (ja) | 2007-02-01 |
CN101228667B (zh) | 2012-02-29 |
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