WO2005026279A1 - 多層異方性導電性接着剤及びこれを用いた接続構造体 - Google Patents
多層異方性導電性接着剤及びこれを用いた接続構造体 Download PDFInfo
- Publication number
- WO2005026279A1 WO2005026279A1 PCT/JP2004/013484 JP2004013484W WO2005026279A1 WO 2005026279 A1 WO2005026279 A1 WO 2005026279A1 JP 2004013484 W JP2004013484 W JP 2004013484W WO 2005026279 A1 WO2005026279 A1 WO 2005026279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesive layer
- adhesive
- film
- anisotropic conductive
- peak temperature
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
- H05K2203/1189—Pressing leads, bumps or a die through an insulating layer
-
- 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
- Y10T428/14—Layer or component removable to expose adhesive
-
- 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
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1471—Protective layer
-
- 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
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1476—Release layer
-
- 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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
-
- 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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2813—Heat or solvent activated or sealable
- Y10T428/2817—Heat sealable
- Y10T428/2826—Synthetic resin or polymer
-
- 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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2848—Three or more layers
-
- 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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/287—Adhesive compositions including epoxy group or epoxy polymer
Definitions
- the present invention relates to a multilayer anisotropic conductive adhesive constituted by laminating a plurality of adhesive layers, and a connection structure in which electronic components are electrically connected via the multilayer anisotropic conductive adhesive About.
- a film adhesive for example, an anisotropic conductive film (ACF) or an insulating material is used as a means for fixing the substrate electrode and the chip electrode in an electrically connected state.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 0 0-3 4 0 6 1 3 (FIG. 2 etc.) Disclosure of Invention
- meta PCT pressure 'tucker'test; 1 2 1 ° C ⁇ 10 0% RH or 1 1 0 ° C ⁇ 85% RH
- Tempoture Cycle Test -55 ° C / 125 ° C
- the reflow resistance is level 2 (85 ° C ⁇ 60% RH condition, 1 68 8h after moisture absorption pretreatment and through a reflow oven) specified by JEDEC (Joint Electron Device Engineering Council) standard
- JEDEC Joint Electron Device Engineering Council
- a polyimide is often formed as an insulating film on a silicon nitride film as a wiring protective layer on the chip side. Compared to the film alone, there was a problem that it was easy to peel off from the adhesive interface after reflow.
- a multi-layer anisotropic conductive adhesive that can sufficiently connect with reflow resistance and can be easily connected, and a connection structure using the same It is to provide.
- the multilayer anisotropic conductive adhesive of the present invention is formed by laminating a plurality of adhesive layers containing at least an insulating resin and a curing agent, and bonding at least one of the plurality of layers.
- the agent layer contains conductive particles, and at least the uppermost or lowermost adhesive layer has a DSC (differential scanning calorific value) exothermic peak temperature of 13 to 180 ° C.
- the DSC exothermic peak temperature is the DSC (Differential Scanning Calorimetry) measurement method, that is, the difference between the amount of heat input to and output from the sample placed in the temperature-controlled electric furnace and the reference material is measured together with the sample temperature. The peak temperature of the exothermic reaction obtained by this method.
- the multilayer anisotropic conductive adhesive of the present invention since at least one of the plurality of layers of the adhesive layer contains conductive particles, The upper and lower continuity of the adhesive is made by the conductive particles.
- at least the uppermost layer or the lowermost adhesive layer has a DSC exothermic peak temperature of 130 ° C. or more and 180 ° C. or less, so that the uppermost layer or the lowermost adhesive layer is a rib. It has the property that it is difficult to peel off even after the low treatment, and it is difficult to peel off after the reflow treatment on the side in contact with the adhesive layer.
- a first adhesive layer having a DSC exothermic peak temperature of 130 ° C. or higher and 180 ° C. or lower and the first adhesive layer It is also possible to have a second adhesive layer whose DSC exothermic peak temperature is 10 ° C. or more lower than that.
- the first adhesive layer faces the side of the electronic component that is easy to peel off after the reflow treatment to obtain good reflow resistance, and the opposite adhesive layer or central adhesive is obtained.
- the overall cost can be reduced by disposing a second exchange layer on the layer and using a relatively inexpensive material, for example, which is generally used for the second adhesive layer. And possible Become.
- the DSC exothermic peak temperature of the second adhesive layer can be configured to be 110 ° C. or higher and 140 ° C. or lower. is there.
- the thicknesses of the first adhesive layer and the second adhesive layer are both l o ⁇ um or more, and the first adhesive layer A configuration in which the ratio of the thickness to the thickness of the second adhesive layer is 0 ⁇ 2 or more and 7 or less is also possible.
- both the first adhesive layer and the second adhesive layer have a certain thickness or more, and if the ratio of the thickness is not extremely large or small, Good characteristics can be obtained.
- the first adhesive layer further contains a thermosetting resin, a thermoplastic resin, a spherical inorganic filler and a curing agent, and the inorganic filler is It is also possible to adopt a structure containing 70 parts by weight or more and 170 parts by weight or less with respect to 100 parts by weight of the total amount of the thermosetting resin and the thermoplastic resin.
- thermosetting resins thermoplastic resins
- spherical inorganic fillers spherical inorganic fillers and curing agents
- the amount of the inorganic filler is desirably 70 to 170 parts by weight with respect to 100 parts by weight of the total amount of the thermosetting resin and the thermoplastic resin. If there is too little inorganic filler, the effect of suppressing peeling after reflow treatment will be reduced. If there are too many inorganic boilers, the connection resistance will increase.
- thermosetting resin thermoplastic resin
- spherical inorganic boiler and curing agent is such that the DSC exothermic peak temperature in the first adhesive layer is 130 ° C or higher and 180 ° C or lower. Select so that the following characteristics can be obtained.
- the reflow resistance can be further improved.
- thermosetting resin contained in the first adhesive layer may be an epoxy resin
- thermoplastic resin may be a phenoxy resin
- the second adhesive layer contains 2-phenylimidazole or a latent imidazole curing agent as a curing agent for the second adhesive layer.
- connection structure of the present invention includes a first anisotropic electronic component having an electrode and an insulating film on the surface and a second electronic component having an electrode on the surface, the multilayer anisotropic conductive adhesive of the present invention described above. It is an electrical connection through.
- the first electronic component having an electrode and an insulating film on the surface and the second electronic component having an electrode on the surface are combined with each other.
- At least the uppermost or lowermost adhesive layer has a DSC exothermic peak temperature of 130 ° C or higher and 180 ° C or lower due to electrical connection via an isotropic conductive adhesive.
- the adhesive layer that is difficult to peel off after facing the reflow treatment faces the side of the electronic component that has been easy to peel off. If arranged in such a manner, good riff mouth-proofness can be obtained.
- the first electronic component having an electrode and an insulating film on the surface is a semiconductor chip, and the electrode is provided on the surface. It is also possible to configure the second electronic component to be a circuit board.
- the insulating film is a silicon nitride film
- the first electronic component having an electrode and an insulating film on the surface
- the DSC heat generation of the multilayer anisotropic conductive adhesive It is also possible to adopt a configuration in which an adhesive layer having a peak temperature of 130 ° C. or more and 180 ° C. or less is disposed so as to face each other.
- the DSC exothermic peak temperature of the multilayer anisotropic conductive adhesive is not lower than 130 ° C and not higher than 180 ° C Better reflow resistance can be obtained by placing the adhesive layer so that it faces the first electronic component.
- the insulating film is a polyimide film
- the second electronic component having an electrode on the surface
- the DSC exothermic peak temperature of the multilayer anisotropic conductive adhesive is 1 It is also possible to adopt a configuration in which an adhesive layer having a temperature of 30 ° C. or higher and 180 ° C. or lower is disposed so as to face each other.
- the DSC exothermic peak temperature of the multilayer anisotropic conductive adhesive is not less than 130 ° C and not more than 180 ° C Better reflow resistance can be obtained if the layer is placed facing the second electronic component.
- the multilayer anisotropic conductive adhesive has an adhesive layer having a DSC heat generation peak temperature of 130 ° C. or higher and 180 ° C. or lower. Therefore, it is possible to realize a connection material (adhesive) and a connection structure excellent in reflow resistance, which is impossible with conventional connection materials.
- FIG. 1 is a schematic cross-sectional view of an embodiment of the multilayer anisotropic conductive adhesive of the present invention
- FIG. 2 shows another example of the multilayer anisotropic conductive adhesive of the present invention
- FIG. 3 is a schematic cross-sectional view of another embodiment of the multilayer anisotropic conductive adhesive of the present invention.
- FIG. 1 shows a schematic configuration diagram (cross-sectional view) of an embodiment of the multilayer anisotropic conductive adhesive of the present invention.
- This multilayer anisotropic conductive adhesive 11 is configured by laminating a second adhesive layer 2 on a first adhesive layer 1.
- At least one of the first adhesive layer 1 and the second adhesive layer 2 is configured to contain conductive particles.
- the multilayer anisotropic conductive adhesive 11 is held by attaching a release film (not shown) to one or both main surfaces (upper surface / lower surface) before use.
- the multilayer anisotropic conductive adhesive 1 1 having this configuration, for example, a coating solution in which the material of the adhesive layer is dissolved in a solvent is prepared, and the coating solution is applied onto a release film (not shown).
- a film adhesive for each adhesive layer is formed. Then, bond the two layers of film adhesive so that the opposite side of the release film faces.
- the coating liquid can be overcoated due to the viscosity of the coating liquid or the volatility of the solvent, apply two layers of coating liquid on the same release film / rem It is also possible to produce anisotropic conductive adhesive 11.
- the DSC exothermic peak temperature of the lower first adhesive layer 1 in particular is 1300 ° C. to 180 °.
- the DSC exothermic peak temperature of the second upper adhesive layer 2 is C and the DSC emission of the first adhesive layer 1
- the temperature is 10 ° C or more lower than the thermal peak temperature (for example, less than 130 ° C).
- the first adhesive layer 1 has an effect that it is difficult to peel off after the reflow treatment.
- the first is especially on the side that is easily peeled after reflow treatment. It is considered that the reflow resistance can be improved more effectively if the adhesive layer 1 of.
- FIG. 2 shows a schematic configuration diagram (cross-sectional view) of an embodiment of the multilayer anisotropic conductive adhesive of the present invention.
- This multi-layer anisotropic conductive adhesive 1 2 is different from the multi-layer anisotropic conductive adhesive 1 1 in FIG. 1 in that the top and bottom of the first adhesive layer 1 and the second adhesive layer 2 are interchanged. It becomes the composition.
- the upper first adhesive layer 1 has a DSC exothermic peak temperature of 130 ° C. to 180 ° C.
- the lower DSC exothermic layer temperature of the second adhesive layer 2 is lower.
- the temperature is 10 ° C. or more lower than the DSC exothermic peak temperature of the first adhesive layer 1 (for example, less than 130 ° C.).
- the first adhesive layer 1 has an effect of making it difficult to peel off after the reflow treatment, and is good.
- An adhesive having anti-reflow characteristics can be constructed.
- the multilayer anisotropic conductive adhesive of FIG. 1 1 and Fig. 2 A more preferable one may be selected from the electric adhesives 12.
- the substrate is usually placed on the lower side and the chip is placed on the upper side for thermocompression bonding, depending on the structure of the electrodes and insulating films on the respective surfaces of the substrate and the chip Multi-layer anisotropic conductive adhesive may be selected.
- the first adhesive layer 1 on the chip side has better reflow resistance, so the upper layer on the chip side A multilayer anisotropic conductive adhesive 12 shown in FIG. 2 that is the first adhesive layer 1 may be selected.
- the first adhesive layer 1 is formed on the substrate. Since the reflow resistance is better on the side, the lower layer on the substrate side is the first adhesive layer 1 and the multilayer anisotropic conductive adhesive 11 shown in FIG. 1 may be selected.
- the DSC exothermic peak temperature between the first adhesive layer 1 and the second adhesive layer 2 has a certain difference, but in the present invention, 2
- a multilayer anisotropic conductive adhesive may be formed by laminating three or more adhesive layers.
- At least the uppermost layer or the lowermost adhesive layer that is, at least one of the adhesive layers, has a DSC exothermic peak temperature within the range of 130 ° C to 180 ° C. It consists of the adhesive layer in
- FIG. 3 shows a cross-sectional view in the case where three adhesive layers are laminated.
- This anisotropic conductive adhesive 20 is formed by laminating three adhesive layers 2 1, 2 2 and 2 3. Of the three adhesive layers 2 1, 2 2, and 2 3, at least one of the adhesive layers contains conductive particles.
- At least the uppermost adhesive layer 21 or the lowermost adhesive layer 23 is an adhesive layer having a DSC exothermic peak temperature in the range of 130 ° C. to 180 °.
- the three layers 2 1, 2 2, and 2 3 may be adhesive layers having a DSC heat generation peak temperature in the range of 130 ° C to 180 ° C.
- Phenoxy resin and epoxy resin are used as the insulating resin, imidazole hardener is used as the hardener, spherical silica is used as the filler, and gold metal is used as the conductive particles.
- resin particles each of these materials is used in parts by weight shown in Table 1 and mixed uniformly in a mixed solvent of toluene and ethyl acetate.
- Spherical silica (average particle diameter ⁇ 0.5 im, manufactured by Tatsumori)
- Gold-coated resin particles (average particle diameter ⁇ 5 / ⁇ ⁇ )
- each coating solution of Film 1 to Film 6 is applied to the release film, and after the solvent is removed, the adhesive layer of the film is sampled and the DSC (Differential Scanning Calorimetry) exothermic peak is reached. The temperature was measured. The results of measuring the DSC exothermic peak temperature are also shown in Table 1.
- Film 1 to Finalem 4 have DSC exothermic peak temperatures from 130 ° C to 180 °. Within the range of C, film 5 to film 6 have a DSC exothermic peak temperature of less than 130 ° C. (Example 1)
- Film 2 with a DSC exothermic peak temperature of 15 1 ° C as the first adhesive layer has a thickness of 40 ⁇ m.
- DSC exothermic peak temperature is 1 2 1 as the second adhesive layer.
- a multilayer anisotropic conductive adhesive having a two-layer structure was formed by laminating film 5 at a temperature of 10 / im and a thickness of 10 / im.
- the adhesive layer coating solution is applied onto the release film to produce films for each adhesive layer (film 2 and finalom 5), and then these two films are applied to the release film. They were laminated together on the opposite side of the film to obtain a multilayer anisotropic conductive adhesive having a thickness of about 50 ⁇ .
- Substrate used FR—5 glass epoxy substrate (glass epoxy layer 0 ⁇ 6 mmZ Cu pattern 35 juni / surface Ni / A u plating; 150 ⁇ pitch) Chip used: size 6.3 mm mouth, A wiring protective layer consisting of a silicon nitride film with a thickness of 0.4 mm, an Au start knob (top diameter ⁇ 50 m, thickness 30 ⁇ ) and a thickness of 5 m is formed. .
- Example 2 The connection structure of Example 1 was obtained by connecting the chip and the substrate by crimping under conditions of thrust 0.6 NZ bumps. (Example 2 to Example 5)
- Example 2 Except that the thicknesses of the first adhesive layer (film 2) and the second adhesive layer (film 5) were changed as shown in Table 2, respectively, in the same manner as in Example 1, The connection structures of Example 2 to Example 5 were obtained.
- Example 6 with a DSC exothermic peak temperature of 17 1 ° C as the first adhesive layer is 15 ⁇ m thick, and film 5 as the second adhesive layer is 3 5 thick. / im, a multi-layer anisotropic conductive contact with a two-layer structure A connection structure of Example 6 was obtained in the same manner as in Example 1 except that an adhesive was formed. '
- the first adhesive layer has a DSC exothermic peak temperature of 130 ° C.
- Film 4 has a thickness of 15 // ⁇
- the second adhesive layer has film 5 of a thickness of 35 ⁇ m. m, These were laminated to form a multilayer anisotropic conductive adhesive having a two-layer structure, and the others were carried out in the same manner as in Example 1 to obtain a connection structure of Example 7.
- the first adhesive layer has a DSC exothermic peak temperature of 14 45 ° C.
- Film 3 has a thickness of 15 ⁇
- the second adhesive layer has film 5 of a thickness of 35 ⁇ m.
- Example 1 except that the thicknesses of the first adhesive layer (Fi / REM 2) and the second adhesive layer (Film 5) were changed as shown in Table 2 respectively. Thus, a connection structure of Example 9 ⁇ Example 10 was obtained. (Comparative Example 2)
- Film 5 having a DSC exothermic peak temperature of 1 21 ° C is applied to the release film to a thickness of 50 ⁇ to form a film-like adhesive.
- the substrate and the chip were pressure-bonded under the same conditions as in Example 1 to obtain a connection structure of Comparative Example 2.
- connection reliability test Samples of each connection structure were pretreated for 2 4 h under 85 ° C 85% RH conditions, then passed through a reflow oven three times, and then PCT (1 110 ° C 85% RH ) And 20 Oh aging, and the conduction resistance was measured.
- each connected structure sample was pretreated for 85 hours at 85 ° C and 85% RH for 2 4 h, and then passed through a reflow furnace three times, and then TCT (-55 ° C / 125 ° C C. Each 15 minutes) was subjected to aging for 500 cycles and the conduction resistance was measured. In all cases, the X mark indicates that an open occurred, the ⁇ mark indicates that there was no open but an increase in resistance, and the ⁇ mark indicates that there was almost no increase in resistance.
- Table 2 shows the composition of the adhesives of the examples and comparative examples and the results of the evaluation tests.
- the temperature difference between the DSC exothermic peaks (chip side film vs. substrate side film)
- Table 2 also shows the film thickness ratio (chip side film / substrate side film).
- the DSC exothermic peak temperature of the adhesive layer on the chip side is 130 ° C. to 180 ° C., and particularly good results are obtained when hydroxymethylated imidazole is used as the curing agent. .
- the results are particularly good when the ratio is in the range of 0.2 to 6 with each being 10 // m or more.
- Example 2 From Table 2, the temperature difference between the DSC exothermic peaks of the two-layer film is less than 10 ° C, and the peak temperature is less than 130 ° C in both cases. It can be seen that the occurrence of peeling after reflow is large and the reliability is poor. In Example 1, it can be seen that there is a large amount of peeling after moisture absorption pretreatment and reflow, and the reliability is poor.
- the first adhesive layer having a DSC exothermic peak temperature in the range of 130 ° C. to 180 ° C. the first adhesive layer, the other adhesive layers, A two-layer adhesive is formed by laminating layers, and the first adhesive layer force is placed so as to be on the S chip side and crimped to improve the appearance and connection reliability after reflow. That is, it can be seen that the reflow resistance is good.
- Example 1 to Example 10 described above D S is provided on the chip side.
- the DSC exothermic peak temperature was 1300 ° C on the substrate side.
- the reflow resistance when the first adhesive layer in the range of ⁇ 180 ° C. was disposed was also examined.
- DSC exothermic peak temperature as the first adhesive layer is 15 1 ° C
- Film 2 has a thickness of 40 ⁇ m
- the second adhesive layer has DSC exothermic peak temperature of 1 2 1
- film 5 has a thickness of 1 O jum.
- a multi-layer anisotropic conductive adhesive of structure was formed.
- the adhesive layer coating solution is applied onto the release film to form films for each adhesive layer (film 2 and film 5), and then these two films are applied to the release film. They were laminated together on the opposite side to a multilayer anisotropic conductive adhesive having a thickness of about 50 / m.
- the following configuration was prepared as a substrate bending chip.
- Substrate used FR-5 glass epoxy substrate (glass epoxy layer 0.6 mm / Cu pattern 35 ⁇ ⁇ surface Ni / A u plating; 150 pitch) Chip used: Size 6.3 mm, thickness A wiring protection layer consisting of a 0.4 mm, Au stud bump (top diameter ⁇ 50 ⁇ , thickness 30 m) and a film thickness of 5 // m is formed.
- the release film is removed, and the first adhesive layer (film 2) is placed on the substrate side, and the second adhesive layer (film 5) is placed on the chip side. , 20 ° C ⁇ 20 seconds, with a thrust of 0.6 N / pump, the chip and the substrate are connected to obtain the connection structure of Example 11 It was.
- Example 16 Except that the thicknesses of the first adhesive layer (film 2) and the second adhesive layer (film 5) were changed as shown in Table 3, the same procedures as in Example 11 were performed. The connection structures of Example 1 2 to Example 15 were obtained. (Example 16)
- the first adhesive layer has a DSC exothermic peak temperature of 17 ° C.
- Film 1 has a thickness of 35 / zm
- the second adhesive layer has film 5 of a thickness of 15 zm.
- Film 4 with a DSC exothermic peak temperature of 130 ° C as the first adhesive layer is 35 ⁇ m thick
- film 5 as the second adhesive layer is 15 ⁇ m thick.
- a multilayer anisotropic conductive adhesive having a two-layer structure was formed by laminating ⁇ and these, and the connection structure of Example 17 was obtained in the same manner as Example 11 except for these.
- Film 3 with a DSC exothermic peak temperature of 14 45 ° C as the first adhesive layer is 3 5 ⁇ thick
- film 5 as the second adhesive layer is 1 thick.
- a multilayered anisotropic conductive adhesive having a two-layer structure was formed by laminating 5 ⁇ and these, and the connection structure of Example 18 was obtained in the same manner as Example 11 except for this.
- Film 6 with DSC exothermic peak temperature 1 1 18 ° C is 3 5 ⁇ m thick
- film 5 with DSC exothermic peak temperature 1 2 1 ° C is 1 5 / xm
- a multilayer anisotropic conductive adhesive having a layer structure was formed, and the film 6 was placed on the substrate side, and the film 5 was placed on the chip side. The connection structure was obtained.
- Example 1 1 except that the thicknesses of the first adhesive layer (film 2) and the second adhesive layer (film 5) were changed as shown in Table 3 respectively.
- Example 1 9 Connection structure of Example 20 was obtained. (Comparative Example 5)
- Film 5 having a DSC exothermic peak temperature of 1 21 ° C was applied to the release film to a thickness of 50 ⁇ to form a film-like adhesive. Using this adhesive, Under the same conditions as in Example 1 1, the substrate, chip and The connection structure of Comparative Example 5 was obtained.
- connection reliability test Samples of each connection structure were treated at 85 ° C 85% RH for 2 4 h after moisture absorption pretreatment and then passed through a reflow oven 3 times, and then PCT (1 110 ° C 85% RH ) And 20 Oh aging, and the conduction resistance was measured.
- each connected structure sample was pretreated for 2 4 h under 85 ° C 85% RH condition and then passed through a reflow oven 3 times, and then TCT (-5 5 ° C / 1 25 ° C Each 15 minutes) was subjected to aging of 500 cycles and the conduction resistance was measured. In all cases, the X mark indicates that an open occurred, the ⁇ mark indicates that there was no resistance but an increase in resistance, and the ⁇ mark indicates that there was little increase in resistance.
- Table 3 shows the composition of the adhesives of the examples and comparative examples and the results of the evaluation tests.
- the temperature difference between the DSC exothermic peaks (substrate side film to chip side film) and the film thickness ratio (chip side film) Rum Z board side film)
- the DSC exothermic peak temperature of the adhesive layer on the substrate side is 130 ° C to 180 ° C, and particularly good results are obtained when using hydroxymethylated imidazole as the curing agent. It is done.
- the thickness of the two-layer film is preferably 10 ⁇ or more, and the ratio is preferably in the range of 0.1 to 9, particularly preferably in the range of 0.2 to 4. A very good result can be obtained when it is in the range of 2 to 1.
- the temperature difference between the DSC exothermic peaks of the two-layer film is less than 10 ° C, and the peak temperature is less than 1300 ° C. It can be seen that the occurrence of peeling after reflow is large and the reliability is poor.
- Comparative Example 5 As shown in Table 3, in the case of a single layer as in Comparative Example 5 and Comparative Example 6, good characteristics as in the case of laminating two layers of films cannot be obtained. In Comparative Example 5 using only film 5 with a DSC exothermic peak temperature of 1 21 ° C, peeling occurred after moisture pretreatment and reflow.
- the first adhesive layer and the other adhesive layer are connected to each other.
- the appearance after reflow and connection reliability are improved, That is, it can be seen that the reflow resistance is good.
- the gold adhesive resin particles are included in the film of the two adhesive layers constituting the multilayer anisotropic conductive adhesive, but in the present invention, As described above, the desired conductivity can be obtained if at least one adhesive layer contains conductive particles.
- the present invention is not limited to the above-described embodiment, and various other configurations can be employed without departing from the gist of the present invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Non-Insulated Conductors (AREA)
- Wire Bonding (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/571,495 US7901768B2 (en) | 2003-09-12 | 2004-09-09 | Multilayer anisotropic conductive adhesive and connection structure using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-322029 | 2003-09-12 | ||
JP2003322029A JP4282417B2 (ja) | 2003-09-12 | 2003-09-12 | 接続構造体 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005026279A1 true WO2005026279A1 (ja) | 2005-03-24 |
Family
ID=34308654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013484 WO2005026279A1 (ja) | 2003-09-12 | 2004-09-09 | 多層異方性導電性接着剤及びこれを用いた接続構造体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7901768B2 (ja) |
JP (1) | JP4282417B2 (ja) |
KR (1) | KR101021437B1 (ja) |
TW (1) | TWI302933B (ja) |
WO (1) | WO2005026279A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7736541B2 (en) * | 2005-09-30 | 2010-06-15 | Sumitomo Electric Industries, Ltd. | Anisotropic conductive adhesive |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8063315B2 (en) | 2005-10-06 | 2011-11-22 | Endicott Interconnect Technologies, Inc. | Circuitized substrate with conductive paste, electrical assembly including said circuitized substrate and method of making said substrate |
JP4737177B2 (ja) * | 2006-10-31 | 2011-07-27 | 日立化成工業株式会社 | 回路接続構造体 |
KR20100009540A (ko) * | 2007-05-15 | 2010-01-27 | 히다치 가세고교 가부시끼가이샤 | 회로 접속 재료 및 회로 부재의 접속 구조 |
JP5192194B2 (ja) * | 2007-07-26 | 2013-05-08 | デクセリアルズ株式会社 | 接着フィルム |
WO2009017200A1 (ja) * | 2007-08-02 | 2009-02-05 | Hitachi Chemical Company, Ltd. | 回路接続材料、それを用いた回路部材の接続構造及び回路部材の接続方法 |
JP5226562B2 (ja) * | 2008-03-27 | 2013-07-03 | デクセリアルズ株式会社 | 異方性導電フィルム、並びに、接合体及びその製造方法 |
KR100979947B1 (ko) | 2008-04-08 | 2010-09-03 | 엘지이노텍 주식회사 | 접속 신뢰성이 우수한 이방도전필름 및 이를 이용한 회로접속구조체 |
JP5200744B2 (ja) * | 2008-08-01 | 2013-06-05 | 住友電気工業株式会社 | 接着剤およびこれを用いた電極接続方法 |
JP4596086B2 (ja) * | 2009-02-27 | 2010-12-08 | 日立化成工業株式会社 | 接着材リール |
JP4596089B2 (ja) * | 2009-03-26 | 2010-12-08 | 日立化成工業株式会社 | 接着材リール |
DE102009024385B4 (de) * | 2009-06-09 | 2011-03-17 | Semikron Elektronik Gmbh & Co. Kg | Verfahren zur Herstellung eines Leistungshalbleitermoduls und Leistungshalbleitermodul mit einer Verbindungseinrichtung |
JP5558140B2 (ja) | 2009-06-10 | 2014-07-23 | デクセリアルズ株式会社 | 絶縁性樹脂フィルム、並びにこれを用いた接合体及びその製造方法 |
JP5398455B2 (ja) * | 2009-09-30 | 2014-01-29 | デクセリアルズ株式会社 | 異方性導電フィルム及びその製造方法 |
JP4924773B2 (ja) * | 2009-12-24 | 2012-04-25 | 住友ベークライト株式会社 | 導電接続材料、電子部品の製造方法、導電接続材料付き電子部材および電子部品 |
JP5533354B2 (ja) * | 2010-06-30 | 2014-06-25 | デクセリアルズ株式会社 | シールドフィルム及びシールド配線板 |
JP5652246B2 (ja) * | 2010-08-23 | 2015-01-14 | 株式会社村田製作所 | 一液性熱硬化型樹脂組成物、それを用いた電子部品の製造方法、および電子部品 |
KR101362868B1 (ko) | 2010-12-29 | 2014-02-14 | 제일모직주식회사 | 이중층 이방성 도전성 필름 |
CN102140316A (zh) * | 2011-05-06 | 2011-08-03 | 广州方邦电子有限公司 | 导电胶膜及其制备方法 |
US9475963B2 (en) | 2011-09-15 | 2016-10-25 | Trillion Science, Inc. | Fixed array ACFs with multi-tier partially embedded particle morphology and their manufacturing processes |
KR101365107B1 (ko) * | 2012-09-21 | 2014-02-20 | 제일모직주식회사 | 이방성 도전 필름 및 이를 포함하는 반도체 장치 |
JP6608147B2 (ja) * | 2015-02-23 | 2019-11-20 | デクセリアルズ株式会社 | 多層接着フィルム、および接続構造体 |
KR102048695B1 (ko) | 2015-10-07 | 2019-11-26 | 데쿠세리아루즈 가부시키가이샤 | 이방성 도전 필름 및 접속 구조체 |
WO2018225773A1 (ja) * | 2017-06-07 | 2018-12-13 | 田中貴金属工業株式会社 | 熱伝導性導電性接着剤組成物 |
WO2019203572A1 (ko) * | 2018-04-17 | 2019-10-24 | 주식회사 엘지화학 | 반도체 회로 접속용 접착제 조성물 및 이를 포함한 접착 필름 |
KR102204964B1 (ko) | 2018-04-17 | 2021-01-19 | 주식회사 엘지화학 | 반도체 회로 접속용 접착제 조성물 및 이를 포함한 접착 필름 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05320610A (ja) * | 1992-05-26 | 1993-12-03 | Hitachi Chem Co Ltd | 接着剤組成物、該接着剤組成物を用いたフィルム状接着剤の製造方法、並びに該接着剤を用いた電極の接続体、及び接着剤付金属箔 |
JP2001302881A (ja) * | 2000-04-18 | 2001-10-31 | Three M Innovative Properties Co | 安定化されたカチオン重合性組成物およびそれを用いた接着剤フィルム並びに導体回路 |
JP2001323246A (ja) * | 2000-03-07 | 2001-11-22 | Sony Chem Corp | 電極接続用接着剤及びこれを用いた接着方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0668091B2 (ja) * | 1987-10-27 | 1994-08-31 | 三菱電機株式会社 | 熱硬化性絶縁樹脂ペースト |
EP0914027B1 (en) * | 1996-07-15 | 2002-10-09 | Hitachi Chemical Company, Ltd. | Film-like adhesive for connecting circuit and circuit board |
JP3649042B2 (ja) | 1999-05-28 | 2005-05-18 | セイコーエプソン株式会社 | Icチップの接続方法及び液晶装置の製造方法 |
JP2001207150A (ja) * | 2000-01-26 | 2001-07-31 | Sony Chem Corp | 接着剤組成物 |
JP3491595B2 (ja) * | 2000-02-25 | 2004-01-26 | ソニーケミカル株式会社 | 異方導電性接着フィルム |
KR100398314B1 (ko) * | 2001-07-19 | 2003-09-19 | 한국과학기술원 | 고접착력 3층 구조 aca 필름 |
JP3695407B2 (ja) * | 2002-02-25 | 2005-09-14 | ソニーケミカル株式会社 | 硬化性接着剤組成物の硬化物の硬化レベルの非破壊検査方法及び電子装置の製造方法 |
-
2003
- 2003-09-12 JP JP2003322029A patent/JP4282417B2/ja not_active Expired - Lifetime
-
2004
- 2004-09-09 US US10/571,495 patent/US7901768B2/en not_active Expired - Fee Related
- 2004-09-09 KR KR1020067004969A patent/KR101021437B1/ko active IP Right Grant
- 2004-09-09 WO PCT/JP2004/013484 patent/WO2005026279A1/ja active Application Filing
- 2004-09-10 TW TW093127372A patent/TWI302933B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05320610A (ja) * | 1992-05-26 | 1993-12-03 | Hitachi Chem Co Ltd | 接着剤組成物、該接着剤組成物を用いたフィルム状接着剤の製造方法、並びに該接着剤を用いた電極の接続体、及び接着剤付金属箔 |
JP2001323246A (ja) * | 2000-03-07 | 2001-11-22 | Sony Chem Corp | 電極接続用接着剤及びこれを用いた接着方法 |
JP2001302881A (ja) * | 2000-04-18 | 2001-10-31 | Three M Innovative Properties Co | 安定化されたカチオン重合性組成物およびそれを用いた接着剤フィルム並びに導体回路 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7736541B2 (en) * | 2005-09-30 | 2010-06-15 | Sumitomo Electric Industries, Ltd. | Anisotropic conductive adhesive |
TWI383405B (zh) * | 2005-09-30 | 2013-01-21 | Sumitomo Electric Industries | 異向導電性黏著劑 |
KR101278991B1 (ko) * | 2005-09-30 | 2013-07-02 | 스미토모덴키고교가부시키가이샤 | 이방 도전성 접착제 |
Also Published As
Publication number | Publication date |
---|---|
TW200516127A (en) | 2005-05-16 |
KR101021437B1 (ko) | 2011-03-15 |
US20070054114A1 (en) | 2007-03-08 |
TWI302933B (en) | 2008-11-11 |
JP2007131649A (ja) | 2007-05-31 |
US7901768B2 (en) | 2011-03-08 |
KR20060120646A (ko) | 2006-11-27 |
JP4282417B2 (ja) | 2009-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005026279A1 (ja) | 多層異方性導電性接着剤及びこれを用いた接続構造体 | |
JP3342703B2 (ja) | 回路接続用フィルム状接着剤及び回路板 | |
WO1996042107A1 (en) | Semiconductor device, wiring board for mounting semiconductor and method of production of semiconductor device | |
US9426896B2 (en) | Insulating resin film, bonded structure using insulating resin film, and production method of bonded structure | |
JP2006294650A (ja) | 電子部品の実装方法 | |
WO1998020542A1 (en) | Electronic parts device | |
TWI255001B (en) | Metal wiring substrate, semiconductor device and the manufacturing method thereof | |
JP2003282636A (ja) | 接続構造体の製造方法 | |
JP2005264109A (ja) | フィルム状接着剤およびこれを用いた半導体装置の製造方法 | |
TWI282353B (en) | Connection material and connection structure body | |
JP3486346B2 (ja) | ベアチップ実装構造 | |
JP2003243563A (ja) | 金属配線基板と半導体装置及びその製造方法 | |
JP4631984B2 (ja) | 回路部材接続用接着剤、回路板、及びその製造方法 | |
JP4631979B2 (ja) | 回路部材接続用接着剤並びに回路板及びその製造方法 | |
JP2015042754A (ja) | 半導体装置の製造方法 | |
JP2003049152A (ja) | 回路接続用接着剤及びそれを用いた接続方法、接続構造体 | |
JP4378788B2 (ja) | Icチップの接続方法 | |
JP4631998B1 (ja) | 回路部材接続用接着剤、回路板、及びその製造方法 | |
JP2004349561A (ja) | 半導体装置の接着方法とそれに使用される接着剤 | |
JP2009135506A (ja) | 接着フィルムおよびその用途ならびに半導体装置の製造方法 | |
JP4181239B2 (ja) | 接続部材 | |
JP2000312068A (ja) | 配線基板およびその製造方法 | |
JP3454223B2 (ja) | 半導体装置の製造方法 | |
JP2024536468A (ja) | 導電粒子の流動性を制御した異方導電性接着フィルムの製造方法 | |
JPH11135173A (ja) | 厚さ方向導電シート及びその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GM HR HU ID IL IN IS KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NA NI NO NZ OM PG PL PT RO RU SC SD SE SG SK SL SY TM TN TR TT TZ UA UG US UZ VC YU ZA ZM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SZ TZ UG ZM ZW AM AZ BY KG MD RU TJ TM AT BE BG CH CY DE DK EE ES FI FR GB GR HU IE IT MC NL PL PT RO SE SI SK TR BF CF CG CI CM GA GN GQ GW ML MR SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1020067004969 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007054114 Country of ref document: US Ref document number: 10571495 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10571495 Country of ref document: US |