WO2011155482A1 - 光半導体装置用ダイボンド材及びそれを用いた光半導体装置 - Google Patents
光半導体装置用ダイボンド材及びそれを用いた光半導体装置 Download PDFInfo
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- WO2011155482A1 WO2011155482A1 PCT/JP2011/063023 JP2011063023W WO2011155482A1 WO 2011155482 A1 WO2011155482 A1 WO 2011155482A1 JP 2011063023 W JP2011063023 W JP 2011063023W WO 2011155482 A1 WO2011155482 A1 WO 2011155482A1
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- die bond
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- optical semiconductor
- silicone resin
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/64—Heat extraction or cooling elements
- H01L33/641—Heat extraction or cooling elements characterized by the materials
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/02—Polysilicates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
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Definitions
- the present invention relates to a die bond material for an optical semiconductor device used for die bonding an optical semiconductor element such as a light emitting diode (LED) element, and an optical semiconductor device using the die bond material for the optical semiconductor device.
- an optical semiconductor element such as a light emitting diode (LED) element
- Optical semiconductor elements such as light emitting diode (LED) elements are widely used as light sources for display devices.
- An optical semiconductor device using an optical semiconductor element has low power consumption and long life.
- the optical semiconductor device can be used even in a harsh environment. Accordingly, optical semiconductor devices are used in a wide range of applications such as mobile phone backlights, liquid crystal television backlights, automobile lamps, lighting fixtures, and signboards.
- Patent Document 1 discloses an optical semiconductor device in which an LED element is mounted on a substrate.
- the LED element is bonded to the upper surface of the substrate using a die bond material.
- This die bond material includes an alkenyl group-containing polyorganosiloxane, a polyorganohydrogensiloxane having three or more hydrogen atoms bonded to silicon atoms, a platinum catalyst, and an adhesion promoter.
- the alkenyl group-containing polyorganosiloxane is a polyorganosiloxane having an amount of hydroxyl groups bonded to silicon atoms of 50 to 3000 ppm, having an average of one or more alkenyl groups bonded to silicon atoms, and having SiO 4/2 units. Including.
- the optical semiconductor element joined by the die bonding material may be thermally deteriorated.
- fillers such as alumina and zinc oxide are known as materials having excellent heat dissipation because of their high thermal conductivity.
- specific gravity of alumina and zinc oxide is relatively large. For this reason, if alumina and zinc oxide are added to the die bond material, there is a problem that alumina and zinc oxide settle in the die bond material.
- the conventional die bond material for optical semiconductor devices to which the filler is added has a problem that cracks are likely to occur in the optical semiconductor device using the die bond material.
- An object of the present invention is to provide a die bond material for an optical semiconductor device that has high thermal conductivity and is less likely to cause cracks in an optical semiconductor device using a die bond material, and an optical semiconductor device using the die bond material for an optical semiconductor device Is to provide.
- a first silicone resin having a hydrogen atom bonded to a silicon atom a second silicone resin not having a hydrogen atom bonded to a silicon atom and having an alkenyl group, and hydrosilyl
- a catalyst for oxidization reaction anhydrous magnesium carbonate not containing water of crystallization represented by the chemical formula MgCO 3 , and a surface of the anhydrous magnesium carbonate coated with an organic resin, a silicone resin or silica.
- the first silicone resin has a hydrogen atom represented by the following formula (1A) or the following formula (1B) and bonded to a silicon atom.
- the second silicone resin is a first silicone resin represented by the following formula (51A) or the following formula (51B), which does not have a hydrogen atom bonded to a silicon atom and has an alkenyl group. 2 silicone resin.
- R7 to R10 each represents a hydrocarbon group having 1 to 8 carbon atoms, and R11 represents a divalent hydrocarbon group having 1 to 8 carbon atoms.
- R51 to R56 each represents at least one phenyl group, at least one alkenyl group, and phenyl and alkenyl groups
- Other than R51 to R56 represent a hydrocarbon group having 1 to 8 carbon atoms
- R57 to 60 each represents a hydrocarbon group having 1 to 8 carbon atoms
- R61 represents a divalent hydrocarbon having 1 to 8 carbon atoms. Represents a group.
- the first silicone resin is a first silicone resin having a hydrogen atom bonded to a silicon atom and an alkenyl group.
- the average particle diameter of the substance is 3 ⁇ m or less.
- the average particle diameter is 0.01 to 2 ⁇ m and the thermal conductivity is 10 W / m ⁇ K or more. Further fillers are included.
- the filler is at least one selected from the group consisting of aluminum oxide, boron nitride, silicon nitride, and zinc oxide.
- An optical semiconductor device includes an optical semiconductor device die-bonding material configured according to the present invention, a connection target member, and an optical semiconductor element connected to the connection target member using the optical semiconductor device die-bonding material. Is provided.
- the die bond material for an optical semiconductor device includes a first silicone resin having a hydrogen atom bonded to a silicon atom, and a second silicone resin not having a hydrogen atom bonded to a silicon atom and having an alkenyl group. And a hydrosilylation catalyst, an anhydrous magnesium carbonate not containing water of crystallization represented by the chemical formula MgCO 3 , and a coated body in which the surface of the anhydrous magnesium carbonate is coated with an organic resin, a silicone resin or silica. Since at least one of the substances is included, the thermal conductivity can be increased. Furthermore, in the optical semiconductor device using the die bond material, it is possible to make it difficult for the die bond material to crack.
- FIG. 1 is a front sectional view showing an optical semiconductor device according to an embodiment of the present invention.
- the die bond material for an optical semiconductor device includes a first silicone resin having a hydrogen atom bonded to a silicon atom, and a second silicone resin not having a hydrogen atom bonded to a silicon atom and having an alkenyl group. And a hydrosilylation catalyst and a substance (X).
- the substance (X) includes magnesium carbonate anhydrous salt (X1) not containing water of crystallization represented by the chemical formula MgCO 3 , and a coated body in which the surface of the magnesium carbonate anhydrous salt is coated with an organic resin, silicone resin or silica It is at least one of (X2).
- the thermal conductivity of the die bond material can be increased. Furthermore, not only can the thermal conductivity of the die bond material be increased, but it is also possible to make it difficult for cracks to occur in the die bond material in an optical semiconductor device using the die bond material.
- the die bond material has high thermal conductivity, the amount of heat generated from the optical semiconductor element can be sufficiently dissipated, and thermal degradation of the optical semiconductor element can be suppressed. For this reason, the optical semiconductor device can be used for a long time, and the reliability of the optical semiconductor device can be improved.
- thermal conductivity of nitride is very high.
- the thermal conductivity of aluminum nitride is 150 to 250 W / m ⁇ K
- the thermal conductivity of boron nitride is 30 to 50 W / m ⁇ K.
- nitrides are very expensive.
- Alumina is relatively inexpensive and has a relatively high thermal conductivity of 20 to 35 W / m ⁇ K.
- alumina has a Mohs hardness of 9, which is high.
- Magnesium oxide is inexpensive and has a good thermal conductivity of 45 to 60 W / m ⁇ K.
- magnesium oxide has low water resistance.
- Silica is very inexpensive.
- silica has a low thermal conductivity of 2 W / m ⁇ K.
- the specific gravity of alumina and zinc oxide is relatively large, there is also a problem that alumina and zinc oxide settle in the die bond material.
- the anhydrous magnesium carbonate (X1) containing no water of crystallization represented by the chemical formula MgCO 3 has a relatively good thermal conductivity of 15 W / m ⁇ K and a low Mohs hardness of 3.5. Therefore, by using the magnesium carbonate salt (X1) or the covering (X2) containing the magnesium carbonate salt, the thermal conductivity of the die bond material can be increased, and cracks in the die bond material can be suppressed. Furthermore, the anhydrous magnesium carbonate (X1) is less expensive than nitride. Therefore, the production cost of the die bond material for optical semiconductor devices can be reduced by using the magnesium carbonate salt (X1) or the covering body (X2) containing the magnesium carbonate salt.
- the chemical formula MgCO 3 magnesium carbonate does not contain crystal water represented by anhydrous salt (X1), for example different from the hydroxy magnesium carbonate of Formula 4MgCO 3 ⁇ Mg (OH 2) ⁇ 4H 2 O.
- This hydroxy magnesium carbonate is sometimes simply referred to as magnesium carbonate.
- this hydroxy magnesium carbonate is heated to around 100 ° C., it releases crystal water.
- hydroxy magnesium carbonate is not suitable for the use of the optical semiconductor device by which high heat resistance is requested
- the content ratios of the aryl groups determined by the following formula (X) in the first silicone resin and the second silicone resin are each preferably 10 mol% or more, more preferably 20 mol% or more, preferably 50 mol%. Below, more preferably 40 mol% or less.
- the content ratio of the aryl group is not less than the above lower limit and not more than the above upper limit, the gas barrier properties are further enhanced and the die bond material is hardly peeled off.
- the 1st silicone resin contained in the die-bonding material for optical semiconductor devices which concerns on this invention has the hydrogen atom couple
- the hydrogen atom is directly bonded to the silicon atom.
- the first silicone resin preferably has a hydrogen atom bonded to a silicon atom and an aryl group.
- the aryl group include an unsubstituted phenyl group, a substituted phenyl group, an unsubstituted phenylene group, and a substituted phenylene group.
- the first silicone resin preferably has a hydrogen atom bonded to a silicon atom and an alkenyl group.
- the first silicone resin is preferably a first silicone resin represented by the following formula (1A) or the following formula (1B).
- a first silicone resin other than the first silicone resin represented by the following formula (1A) or the following formula (1B) may be used.
- the first silicone resin represented by the following formula (1B) may have a phenylene group or may not have a phenylene group.
- the said 1st silicone resin only 1 type may be used and 2 or more types may be used together.
- the structural unit represented by (R4R5SiO 2/2 ) and the structural unit represented by (R6SiO 3/2 ) may each have an alkoxy group, and have a hydroxy group. You may have.
- R7 to R10 each represents a hydrocarbon group having 1 to 8 carbon atoms, and R11 represents a divalent hydrocarbon group having 1 to 8 carbon atoms.
- the structural unit represented by (R4R5SiO 2/2 ), the structural unit represented by (R6SiO 3/2 ), and the structural unit represented by (R7R8R9R10Si 2 R11O 2/2 ) are Each may have an alkoxy group and may have a hydroxy group.
- At least one of R1 to R6 represents a phenyl group, at least one represents a hydrogen atom, and the phenyl group and the hydrogen atom R1 to R6 other than the above preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- At least one of R1 to R6 represents a phenyl group, at least one represents a hydrogen atom, a phenyl group and a hydrogen atom R1 to R6 other than the above preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- At least one of R1 to R6 represents a hydrogen atom, at least one represents an alkenyl group, and a hydrogen atom and an alkenyl group R1 to R6 other than the above preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- At least one of R1 to R6 represents a hydrogen atom, at least one represents an alkenyl group, and a hydrogen atom and an alkenyl group R1 to R6 other than the above preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- At least one of R1 to R6 represents a phenyl group, at least one represents a hydrogen atom, and at least one represents alkenyl.
- R1 to R6 other than a phenyl group, a hydrogen atom, and an alkenyl group preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- At least one of R1 to R6 represents a phenyl group, at least one represents a hydrogen atom, and at least one represents alkenyl.
- R1 to R6 other than a phenyl group, a hydrogen atom, and an alkenyl group preferably represent a hydrocarbon group having 1 to 8 carbon atoms.
- the above formula (1A) and the above formula (1B) show an average composition formula.
- the hydrocarbon group in the above formula (1A) and the above formula (1B) may be linear or branched.
- R1 to R6 in the above formula (1A) and the above formula (1B) may be the same or different.
- R7 to R10 in the above formula (1B) may be the same or different.
- the oxygen atom part in the structural unit represented by R11O 2/2 ) represents an oxygen atom part forming an siloxane bond, an oxygen atom part of an alkoxy group, or an oxygen atom part of a hydroxy group.
- the content of alkoxy groups is small, and the content of hydroxy groups is also small.
- an organosilicon compound such as an alkoxysilane compound is hydrolyzed and polycondensed in order to obtain a first silicone resin
- most of the alkoxy groups and hydroxy groups are converted into partial skeletons of siloxane bonds. Because. That is, most of oxygen atoms of the alkoxy group and oxygen atoms of the hydroxy group are converted into oxygen atoms forming a siloxane bond.
- the hydrocarbon group having 1 to 8 carbon atoms in the above formula (1A) and the above formula (1B) is not particularly limited, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, and an n-pentyl group.
- the divalent hydrocarbon group having 1 to 8 carbon atoms in the above formula (1B) is not particularly limited, and examples thereof include methylene group, ethylene group, propylene group, butylene group, pentylene group, hexylene group, cyclohexylene group and phenylene. Groups and the like.
- examples of the alkenyl group include a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group.
- the alkenyl group in the first silicone resin is preferably a vinyl group or an allyl group, and more preferably a vinyl group.
- required from the following formula (X1) in the 1st silicone resin represented by the said Formula (1A) or the said Formula (1B) becomes like this.
- it is 10 mol% or more,
- it is 50 mol% or less. is there.
- the content ratio of the aryl group is 10 mol% or more, the gas barrier property is further enhanced.
- the content ratio of the aryl group is 50 mol% or less, the die bond material is hardly peeled off.
- the content ratio of the aryl group is more preferably 20 mol% or more. From the viewpoint of making the peeling of the die bond material more difficult to occur, the content ratio of the aryl group is more preferably 40 mol% or less.
- aryl group (average number of aryl groups contained in one molecule of the first silicone resin whose average composition formula is represented by the above formula (1A) or the above formula (1B) ⁇ aryl group
- the aryl group in the above formula (X1) represents a phenyl group
- the content ratio of the aryl group is the content ratio of the phenyl group.
- the aryl group in the above formula (X1) represents a phenyl group and a phenylene group
- the content ratio indicates the total content ratio of the phenyl group and the phenylene group.
- the aryl group in the above formula (X1) represents a phenyl group
- the content ratio indicates the content ratio of the phenyl group.
- the structural unit of (R7R8R9R10Si 2 R11O 2/2 ) is preferably a structural unit represented by the following formula (1b-1).
- the structural unit represented by the following formula (1b-1) has a phenylene group, and the phenylene group is a substituted or unsubstituted phenylene group.
- the term “phenylene group” includes a substituted phenylene group in which a hydrocarbon group having 1 to 8 carbon atoms is substituted on a benzene ring.
- Ra represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms
- R7 to R10 each represents a hydrocarbon group having 1 to 8 carbon atoms.
- the hydrocarbon group may be linear or branched.
- the bonding sites of the three groups bonded to the benzene ring in the above formula (1b-1) are not particularly limited.
- the terminal oxygen atom generally forms a siloxane bond with an adjacent silicon atom, and shares an oxygen atom with the adjacent structural unit. Therefore, one oxygen atom at the terminal is defined as “O 1/2 ”.
- the structural unit of (R7R8R9R10Si 2 R11O 2/2 ) is preferably a structural unit represented by the following formula (1b-2).
- the structural unit represented by the following formula (1b-2) has a phenylene group, and the phenylene group is a substituted or unsubstituted phenylene group.
- the bonding site of Ra bonded to the benzene ring in the following formula (1b-2) is not particularly limited.
- Ra represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms
- R7 to R10 each represents a hydrocarbon group having 1 to 8 carbon atoms.
- the structural unit represented by (R7R8R9R10Si 2 R11O 2/2 ) is more preferably a structural unit represented by the following formula (1b-3).
- the structural unit represented by the following formula (1b-3) has a phenylene group, and the phenylene group is an unsubstituted phenylene group.
- R7 to R10 each represent a hydrocarbon group having 1 to 8 carbon atoms.
- the structural unit represented by (R4R5SiO 2/2 ) (hereinafter also referred to as a bifunctional structural unit) is represented by the following formula (1 -2), that is, a structure in which one of the oxygen atoms bonded to the silicon atom in the bifunctional structural unit constitutes a hydroxy group or an alkoxy group may be included.
- the structural unit represented by (R4R5SiO 2/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (1-b), and is further represented by the following formula (1-2-b). A portion surrounded by a broken line of the structural unit may be included. That is, a structural unit having a group represented by R4 and R5 and having an alkoxy group or a hydroxy group remaining at the terminal is also included in the structural unit represented by (R4R5SiO 2/2 ).
- the structural unit represented by (R4R5SiO 2/2 ) is a broken line of the structural unit represented by the following formula (1-b) The part enclosed by is shown.
- the structural unit represented by (R4R5SiO 2/2 ) having the remaining alkoxy group or hydroxy group has the following formula: A portion surrounded by a broken line in the structural unit represented by (1-2-b) is shown.
- X represents OH or OR
- OR represents a linear or branched alkoxy group having 1 to 4 carbon atoms.
- R4 and R5 in the above formulas (1-b), (1-2) and (1-2-b) are the same groups as R4 and R5 in the above formulas (1A) and (1B). .
- the structural unit represented by (R6SiO 3/2 ) (hereinafter also referred to as trifunctional structural unit) is represented by the following formula (1 -3) or a structure represented by the following formula (1-4), that is, a structure in which two oxygen atoms bonded to a silicon atom in the trifunctional structural unit each constitute a hydroxy group or an alkoxy group, or a trifunctional
- One of the oxygen atoms bonded to the silicon atom in the structural unit may include a structure constituting a hydroxy group or an alkoxy group.
- the structural unit represented by (R6SiO 3/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (1-c), and further includes the following formula (1-3-c) or the following formula A portion surrounded by a broken line of the structural unit represented by (1-4-c) may be included. That is, a structural unit having a group represented by R6 and having an alkoxy group or a hydroxy group remaining at the terminal is also included in the structural unit represented by (R6SiO 3/2 ).
- R6 in the above formulas (1-c), (1-3), (1-3-c), (1-4) and (1-4-c) represents the above formula (1A) and the above formula (1B). It is the same group as R6 in).
- the structural unit represented by (R7R8R9R10Si 2 R11O 2/2 ) has a structure represented by the following formula (1-5), that is, (R7R8R9R10Si 2
- One of the oxygen atoms bonded to the silicon atom in the structural unit of R 11 O 2/2 ) may contain a structure constituting a hydroxy group or an alkoxy group.
- the structural unit represented by (R7R8R9R10Si 2 R11O 2/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (1-d), and further represented by the following formula (1-5-d)
- the part enclosed by the broken line of the structural unit represented may be included. That is, a structural unit having a group represented by R7, R8, R9, R10 and R11 and having an alkoxy group or a hydroxy group remaining at the terminal is also a structure represented by (R7R8R9R10Si 2 R11O 2/2 ). Included in the unit.
- R7 to R11 in the above formulas (1-d), (1-5) and (1-5-d) are the same groups as R7 to R11 in the above formula (1B).
- the linear or branched alkoxy group having 1 to 4 carbon atoms is not particularly limited, and examples thereof include methoxy group, ethoxy group, n-propoxy group, n- Examples include butoxy group, isopropoxy group, isobutoxy group, sec-butoxy group and t-butoxy group.
- the lower limit of a / (a + b + c) is 0.05, and the upper limit is 0.50.
- a / (a + b + c) satisfies the above lower limit and upper limit, the heat resistance of the die bond material can be further increased, and peeling of the die bond material can be further suppressed.
- a preferable lower limit of a / (a + b + c) is 0.10, a more preferable lower limit is 0.15, a preferable upper limit is 0.45, and a more preferable upper limit is 0.40.
- the lower limit of b / (a + b + c) is 0, and the upper limit is 0.40.
- the storage elastic modulus at a high temperature of the die-bonding material can be increased.
- the structural unit of (R4R5SiO 2/2 ) does not exist in the above formula (1A).
- the lower limit of c / (a + b + c) is 0.30, and the upper limit is 0.80.
- the storage elastic modulus at a high temperature of the die-bonding material can be increased.
- c / (a + b + c) satisfies the above upper limit, the heat resistance of the die bond material becomes high, and the thickness of the cured product of the die bond material is difficult to decrease under a high temperature environment.
- the preferable minimum of c / (a + b + c) is 0.35, the more preferable minimum is 0.40, and a preferable upper limit is 0.75.
- the lower limit of a / (a + b + c + d) is 0.05, and the upper limit is 0.50.
- a / (a + b + c + d) satisfies the above lower limit and upper limit, the heat resistance of the die bond material can be further increased, and peeling of the die bond material can be further suppressed.
- a preferable lower limit of a / (a + b + c + d) is 0.10, a more preferable lower limit is 0.15, a preferable upper limit is 0.45, and a more preferable upper limit is 0.40.
- the lower limit of b / (a + b + c + d) is 0, and the upper limit is 0.40.
- the storage elastic modulus at a high temperature of the die bond material can be increased.
- the structural unit of (R4R5SiO 2/2 ) does not exist in the above formula (1B).
- the lower limit of c / (a + b + c + d) is 0.30, and the upper limit is 0.80.
- the storage elastic modulus at a high temperature of the die bond material can be increased.
- c / (a + b + c + d) satisfies the above upper limit, the heat resistance of the die bond material becomes high, and the thickness of the cured product of the die bond material is difficult to decrease under a high temperature environment.
- the preferable lower limit of c / (a + b + c + d) is 0.35, the more preferable lower limit is 0.40, and the preferable upper limit is 0.75.
- the lower limit of d / (a + b + c + d) is 0.01, and the upper limit is 0.40.
- d / (a + b + c + d) satisfies the above lower limit and upper limit, a die bond material for an optical semiconductor device that has a high gas barrier property against corrosive gas and hardly cracks or peels even when used in a harsh environment is obtained. be able to.
- the preferable lower limit of d / (a + b + c + d) is 0.03, the more preferable lower limit is 0.05, the preferable upper limit is 0.35, and the more preferable upper limit is 0.30.
- NMR Si-nuclear magnetic resonance analysis
- TMS tetramethylsilane
- each peak corresponding to the structural unit represented by (R1R2R3SiO 1/2 ) a in (1A) and the above formula (1B) appears in the vicinity of +10 to ⁇ 5 ppm
- the above formula (1A) and the above formula (1B) (R4R5SiO 2/2 ) b and the respective peaks corresponding to the bifunctional structural unit of the formula (1-2) appear in the vicinity of ⁇ 10 to ⁇ 50 ppm
- the peaks in the formula (1A) and the formula (1B) R6SiO 3/2 ) c and peaks corresponding to the trifunctional structural units of the above formula (1-3) and the above formula (1-4) appear in the vicinity of ⁇ 50 to ⁇ 80 ppm
- the above formula (1B) (R7R8R R10Si 2 R11O 2/2) peaks corresponding to the respective structural units of d and the equation (1-5) appears in the vicinity of 0 ⁇ -5 ppm.
- the ratio of each structural unit in the above formula (1A) and the above formula (1B) can be measured by measuring 29 Si-NMR and comparing the peak areas of the respective signals.
- the second silicone resin contained in the die bond material for optical semiconductor devices according to the present invention has an alkenyl group.
- the alkenyl group is directly bonded to the silicon atom.
- the carbon atom in the carbon-carbon double bond of the alkenyl machine may be bonded to the silicon atom, and the carbon atom different from the carbon atom in the carbon-carbon double bond of the alkenyl group is bonded to the silicon atom. It may be.
- the second silicone resin preferably has an alkenyl group and an aryl group.
- the aryl group include an unsubstituted phenyl group, a substituted phenyl group, an unsubstituted phenylene group, and a substituted phenylene group.
- the second silicone resin is preferably a second silicone resin represented by the following formula (51A) or the following formula (51B).
- a second silicone resin other than the second silicone resin represented by the following formula (51A) or the following formula (51B) may be used.
- the silicone resin represented by the following formula (51B) may have a phenylene group or may not have a phenylene group.
- the said 2nd silicone resin only 1 type may be used and 2 or more types may be used together.
- the structural unit represented by (R54R55SiO 2/2 ) and the structural unit represented by (R56SiO 3/2 ) may each have an alkoxy group, You may have.
- R51 to R56 each represents at least one phenyl group, at least one alkenyl group, and phenyl and alkenyl groups
- Other than R51 to R56 represent a hydrocarbon group having 1 to 8 carbon atoms
- R57 to 60 each represents a hydrocarbon group having 1 to 8 carbon atoms
- R61 represents a divalent hydrocarbon having 1 to 8 carbon atoms. Represents a group.
- the structural unit represented by (R54R55SiO 2/2 ), the structural unit represented by (R56SiO 3/2 ), and the structural unit represented by (R57R58R59R60Si 2 R61O 2/2 ) are Each may have an alkoxy group and may have a hydroxy group.
- the above formula (51A) and the above formula (51B) show the average composition formula.
- the hydrocarbon group in the above formula (51A) and the above formula (51B) may be linear or branched.
- R51 to R56 in the above formula (51A) and the above formula (51B) may be the same or different.
- R57 to R60 in the above formula (51B) may be the same or different.
- the oxygen atom part in the structural unit represented by / 2 ) represents an oxygen atom part forming a siloxane bond, an oxygen atom part of an alkoxy group, or an oxygen atom part of a hydroxy group.
- examples of the alkenyl group include a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group.
- the alkenyl group in the second silicone resin and the alkenyl group in the above formula (51A) and the above formula (51B) are preferably vinyl groups or allyl groups, More preferably.
- the hydrocarbon group having 1 to 8 carbon atoms in the above formula (51A) and the above formula (51B) is not particularly limited, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, and an n-pentyl group.
- the divalent hydrocarbon group having 1 to 8 carbon atoms in the above formula (51B) is not particularly limited, and examples thereof include methylene group, ethylene group, propylene group, butylene group, pentylene group, hexylene group, cyclohexylene group and phenylene. Groups and the like.
- required from the following formula (X51) in the 2nd silicone resin represented by the said Formula (51A) or the said Formula (51B) becomes like this.
- it is 10 mol% or more, Preferably it is 50 mol% or less.
- the content ratio of the aryl group is 10 mol% or more, the gas barrier property is further enhanced.
- the content ratio of the aryl group is 50 mol% or less, the die bond material is hardly peeled off.
- the content ratio of the aryl group is more preferably 20 mol% or more.
- the aryl group content is more preferably 40 mol% or less.
- aryl groups (average number of aryl groups contained in one molecule of the second silicone resin whose average composition formula is represented by the above formula (51A) or the above formula (51B) ⁇ aryl group
- the aryl group in the above formula (X51) represents a phenyl group
- the aryl group content ratio is the phenyl group content ratio.
- the aryl group in the above formula (X51) represents a phenyl group and a phenylene group.
- the content ratio indicates the total content ratio of the phenyl group and the phenylene group.
- the aryl group in the above formula (X51) represents a phenyl group
- the content ratio indicates the content ratio of the phenyl group.
- the structural unit of (R57R58R59R60Si 2 R61O 2/2 ) is preferably a structural unit represented by the following formula (51b-1).
- the structural unit represented by the following formula (51b-1) has a phenylene group, and the phenylene group is a substituted or unsubstituted phenylene group.
- Rb represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms
- R57 to R60 each represents a hydrocarbon group having 1 to 8 carbon atoms.
- the hydrocarbon group may be linear or branched. Note that the bonding sites of the three groups bonded to the benzene ring in the formula (51b-1) are not particularly limited.
- the structural unit of (R57R58R59R60Si 2 R61O 2/2 ) is preferably a structural unit represented by the following formula (51b-2).
- the structural unit represented by the following formula (51b-2) has a phenylene group, and the phenylene group is a substituted or unsubstituted phenylene group.
- the bonding site of Rb bonded to the benzene ring in the following formula (51b-2) is not particularly limited.
- Rb represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms
- R57 to R60 each represents a hydrocarbon group having 1 to 8 carbon atoms.
- the structural unit represented by (R57R58R59R60Si 2 R61O 2/2 ) is more preferably a structural unit represented by the following formula (51b-3).
- the structural unit represented by the following formula (51b-3) has a phenylene group, and the phenylene group is an unsubstituted phenylene group.
- R57 to R60 each represents a hydrocarbon group having 1 to 8 carbon atoms.
- the structural unit represented by (R54R55SiO 2/2 ) (hereinafter also referred to as a bifunctional structural unit) has the following formula (51 -2), that is, a structure in which one of the oxygen atoms bonded to the silicon atom in the bifunctional structural unit constitutes a hydroxy group or an alkoxy group may be included.
- the structural unit represented by (R54R55SiO 2/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (51-b), and is further represented by the following formula (51-2-b). A portion surrounded by a broken line of the structural unit may be included. That is, a structural unit having a group represented by R54 and R55 and having an alkoxy group or a hydroxy group remaining at the terminal is also included in the structural unit represented by (R54R55SiO 2/2 ).
- X represents OH or OR
- OR represents a linear or branched alkoxy group having 1 to 4 carbon atoms.
- R54 and R55 in the above formulas (51-b), (51-2) and (51-2-b) are the same groups as R54 and R55 in the above formula (51A) or the above formula (51B). .
- the structural unit represented by (R56SiO 3/2 ) (hereinafter also referred to as trifunctional structural unit) is represented by the following formula (51 -3) or a structure represented by the following formula (51-4), that is, a structure in which two oxygen atoms bonded to a silicon atom in the trifunctional structural unit each constitute a hydroxy group or an alkoxy group, or a trifunctional
- One of the oxygen atoms bonded to the silicon atom in the structural unit may include a structure constituting a hydroxy group or an alkoxy group.
- the structural unit represented by (R56SiO 3/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (51-c), and further includes the following formula (51-3-c) or the following formula A portion surrounded by a broken line of the structural unit represented by (51-4-c) may be included. That is, a structural unit having a group represented by R56 and having an alkoxy group or a hydroxy group remaining at the terminal is also included in the structural unit represented by (R56SiO 3/2 ).
- R56 in the above formulas (51-c), (51-3), (51-3-c), (51-4) and (51-4-c) is the same as in the above formulas (51A) and (51B).
- R56 is the same group as R56.
- the structural unit represented by (R57R58R59R60Si 2 R61O 2/2 ) is a structure represented by the following formula (51-5), that is, (R57R58R59R60Si 2 R61O 2/2 ) may contain a structure in which one of oxygen atoms bonded to a silicon atom in the structural unit constitutes a hydroxy group or an alkoxy group.
- the structural unit represented by (R57R58R59R60Si 2 R61O 2/2 ) includes a portion surrounded by a broken line of the structural unit represented by the following formula (51-d), and further represented by the following formula (51-5-d)
- the part enclosed by the broken line of the structural unit represented may be included. That is, the structural unit having a group represented by R57, R58, R59, R60 and R61 and having an alkoxy group or a hydroxy group remaining at the terminal is also a structure represented by (R57R58R59R60Si 2 R61O 2/2 ). Included in the unit.
- R57 to R61 in the above formulas (51-d), (51-5) and (51-5-d) are the same groups as R57 to R61 in the above formula (51B).
- the linear or branched alkoxy group having 1 to 4 carbon atoms is not particularly limited.
- methoxy group, ethoxy group, n-propoxy group, n- Examples include butoxy group, isopropoxy group, isobutoxy group, sec-butoxy group and t-butoxy group.
- the lower limit of p / (p + q + r) is 0.05, and the upper limit is 0.50.
- the heat resistance of the die bond material can be further increased, and peeling of the die bond material can be further suppressed.
- the preferable lower limit of p / (p + q + r) is 0.10, the more preferable lower limit is 0.15, the preferable upper limit is 0.45, and the more preferable upper limit is 0.40.
- the lower limit of q / (p + q + r) is 0, and the upper limit is 0.40.
- q / (p + q + r) When the above upper limit is satisfied, the storage elastic modulus at a high temperature of the die bond material can be increased.
- the preferable upper limit of q / (p + q + r) is 0.35, and a more preferable upper limit is 0.30.
- the structural unit of (R54R55SiO 2/2 ) does not exist in the above formula (51A).
- the lower limit of r / (p + q + r) is 0.30, and the upper limit is 0.80.
- the storage elastic modulus at a high temperature of the die-bonding material can be increased.
- r / (p + q + r) satisfies the above upper limit, the heat resistance of the die bond material becomes high, and the thickness of the cured product of the die bond material becomes difficult to decrease under a high temperature environment.
- the lower limit of p / (p + q + r + s) is 0.05, and the upper limit is 0.50.
- the heat resistance of the die bond material can be further increased, and peeling of the die bond material can be further suppressed.
- the lower limit of q / (p + q + r + s) is 0, and the upper limit is 0.40.
- the storage elastic modulus at a high temperature of the die bond material can be increased.
- the lower limit of r / (p + q + r + s) is 0.30, and the upper limit is 0.80.
- the storage elastic modulus at a high temperature of the die-bonding material can be increased.
- the above upper limit is satisfied, the heat resistance of the die bond material is increased, and the thickness of the cured product of the die bond material is difficult to decrease under a high temperature environment.
- the lower limit of s / (p + q + r + s) is 0.01 and the upper limit is 0.40.
- s / (p + q + r + s) satisfies the above lower limit and upper limit, a die bond material for optical semiconductor devices that has a high gas barrier property against corrosive gas and hardly cracks or peels even when used in harsh environments is obtained. be able to.
- the preferable lower limit of s / (p + q + r + s) is 0.03, the more preferable lower limit is 0.05, the preferable upper limit is 0.35, and the more preferable upper limit is 0.30.
- the ratio of each structural unit in the above formula (51A) and the above formula (51B) can be measured by measuring 29 Si-NMR and comparing the peak areas of the respective signals.
- the content of the second silicone resin is 10 parts by weight or more and 400 parts by weight or less with respect to 100 parts by weight of the first silicone resin.
- the contents of the first and second silicone resins are within this range, it is possible to obtain a die bond material having a higher storage elastic modulus at a high temperature and a more excellent gas barrier property.
- the content of the second silicone resin is 100% by weight of the first silicone resin.
- a more preferred lower limit is 30 parts by weight
- a still more preferred lower limit is 50 parts by weight
- a more preferred upper limit is 300 parts by weight
- a still more preferred upper limit is 200 parts by weight.
- the die bond material for an optical semiconductor device according to the present invention is represented by the first silicone resin represented by the above formula (1B) and the above formula (51B). It is preferable that at least one of the second silicone resins is included.
- the preferable lower limit of the alkoxy group content of the first and second silicone resins is 0.5 mol%, the more preferable lower limit is 1 mol%, the preferable upper limit is 10 mol%, and the more preferable upper limit is 5 mol%.
- the content of the alkoxy group is within the above preferred range, the adhesion of the die bond material can be enhanced.
- the adhesion of the die bond material can be improved.
- the alkoxy group content satisfies the preferable upper limit, the storage stability of the first and second silicone resins and the die bond material is increased, and the heat resistance of the die bond material is further increased.
- the content of the alkoxy group means the amount of the alkoxy group contained in the average composition formula of the first and second silicone resins.
- the first and second silicone resins do not contain silanol groups.
- the storage stability of the first and second silicone resins and the die bond material is increased.
- the silanol group can be reduced by heating under vacuum.
- the content of silanol groups can be measured using infrared spectroscopy.
- the preferred lower limit of the number average molecular weight (Mn) of the first and second silicone resins is 500, the more preferred lower limit is 800, the still more preferred lower limit is 1000, the preferred upper limit is 50000, and the more preferred upper limit is 15000.
- Mn number average molecular weight
- the volatile components are reduced at the time of thermosetting, and the thickness of the cured product of the die bond material is hardly reduced under a high temperature environment.
- viscosity adjustment is easy.
- the number average molecular weight (Mn) is a value obtained by using polystyrene as a standard substance by gel permeation chromatography (GPC).
- the number average molecular weight (Mn) is determined by two measuring devices manufactured by Waters (column: Shodex GPC LF-804 (length: 300 mm) manufactured by Showa Denko KK), measuring temperature: 40 ° C., flow rate: 1 mL / min, solvent: Tetrahydrofuran, standard substance: polystyrene) means a value measured.
- the method for synthesizing the first and second silicone resins is not particularly limited, and examples thereof include a method in which an alkoxysilane compound is hydrolyzed and subjected to a condensation reaction, and a method in which a chlorosilane compound is hydrolyzed and condensed. Of these, a method of hydrolyzing and condensing the alkoxysilane compound from the viewpoint of reaction control is preferable.
- Examples of the method of hydrolyzing and condensing the alkoxysilane compound include a method of reacting an alkoxysilane compound in the presence of water and an acidic catalyst or a basic catalyst. Further, the disiloxane compound may be hydrolyzed and used.
- organosilicon compound for introducing a phenyl group into the first and second silicone resins examples include triphenylmethoxysilane, triphenylethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, methyl (phenyl) dimethoxysilane, and Examples thereof include phenyltrimethoxysilane.
- Examples of the organosilicon compound for introducing the structural units (R57R58R59R60Si 2 R61O 2/2 ) and (R7R8R9R10Si 2 R11O 2/2 ) into the first and second silicone resins include 1,4-bis (dimethyl Methoxysilyl) benzene, 1,4-bis (diethylmethoxysilyl) benzene, 1,4-bis (ethoxyethylmethylsilyl) benzene, 1,6-bis (dimethylmethoxysilyl) hexane, 1,6-bis (diethylmethoxy) And silyl) hexane and 1,6-bis (ethoxyethylmethylsilyl) hexane.
- organosilicon compound for introducing an alkenyl group into the first and second silicone resins examples include vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane, methoxydimethylvinylsilane, and 1,3-divinyl-1, Examples include 1,3,3-tetramethyldisiloxane.
- organosilicon compound for introducing a hydrogen atom bonded to a silicon atom into the first silicone resin examples include trimethoxysilane, triethoxysilane, methyldimethoxysilane, methyldiethoxysilane, and 1,1,3,3. -Tetramethyldisiloxane and the like.
- Examples of the acidic catalyst include inorganic acids, organic acids, acid anhydrides of inorganic acids and derivatives thereof, and acid anhydrides of organic acids and derivatives thereof.
- Examples of the inorganic acid include hydrochloric acid, phosphoric acid, boric acid, and carbonic acid.
- examples of the organic acid include formic acid, acetic acid, propionic acid, butyric acid, lactic acid, malic acid, tartaric acid, citric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid, maleic acid and oleic acid. Is mentioned.
- Examples of the basic catalyst include alkali metal hydroxides, alkali metal alkoxides, and alkali metal silanol compounds.
- alkali metal hydroxide examples include sodium hydroxide, potassium hydroxide and cesium hydroxide.
- alkali metal alkoxide include sodium-t-butoxide, potassium-t-butoxide, and cesium-t-butoxide.
- alkali metal silanol compound examples include a sodium silanolate compound, a potassium silanolate compound, and a cesium silanolate compound. Of these, a potassium-based catalyst or a cesium-based catalyst is preferable.
- the hydrosilylation reaction catalyst contained in the die bond material for optical semiconductor devices according to the present invention includes a hydrogen atom bonded to a silicon atom in the first silicone resin, and an alkenyl group in the second silicone resin. Is a catalyst for hydrosilylation reaction.
- hydrosilylation reaction catalyst various catalysts that cause the hydrosilylation reaction to proceed can be used.
- the said catalyst for hydrosilylation reaction only 1 type may be used and 2 or more types may be used together.
- hydrosilylation reaction catalyst examples include platinum-based catalysts, rhodium-based catalysts, and palladium-based catalysts.
- a platinum-based catalyst is preferable because the transparency of the die-bonding material can be increased.
- platinum-based catalyst examples include platinum powder, chloroplatinic acid, platinum-alkenylsiloxane complex, platinum-olefin complex, and platinum-carbonyl complex.
- platinum-alkenylsiloxane complex or a platinum-olefin complex is preferred.
- Examples of the alkenylsiloxane in the platinum-alkenylsiloxane complex include 1,3-divinyl-1,1,3,3-tetramethyldisiloxane and 1,3,5,7-tetramethyl-1,3,5. , 7-tetravinylcyclotetrasiloxane and the like.
- Examples of the olefin in the platinum-olefin complex include allyl ether and 1,6-heptadiene.
- alkenylsiloxane, organosiloxane oligomer, allyl ether or olefin is added to the platinum-alkenylsiloxane complex or platinum-olefin complex.
- the alkenylsiloxane is preferably 1,3-divinyl-1,1,3,3-tetramethyldisiloxane.
- the organosiloxane oligomer is preferably a dimethylsiloxane oligomer.
- the olefin is preferably 1,6-heptadiene.
- the content of the catalyst for hydrosilylation reaction is preferably in the range of 0.01 to 0.5 parts by weight.
- the content of the hydrosilylation reaction catalyst is not less than the above lower limit, it is easy to sufficiently cure the die bond material, and the gas barrier property of the die bond material can be further enhanced.
- the content of the catalyst for hydrosilylation reaction is not more than the above upper limit, the die bond material is more difficult to discolor.
- the content of the hydrosilylation reaction catalyst is more preferably 0.02 parts by weight or more, and more preferably 0.3 parts by weight or less.
- the substance (X) contained in the die bond material for an optical semiconductor device according to the present invention includes magnesium carbonate anhydrous salt (X1) not containing water of crystallization represented by the chemical formula MgCO 3 , and the surface of the magnesium carbonate anhydrous salt. It is at least one of the covering (X2) covered with an organic resin, a silicone resin or silica. As the substance (X), only the anhydrous magnesium carbonate (X1) may be used, or only the covering (X2) may be used. The anhydrous magnesium carbonate (X1) and the covering (X2) Both of these may be used.
- a coated body in which the surface of the anhydrous magnesium carbonate is coated with a silicone resin or silica is more preferable, and a coated body in which the surface of the anhydrous magnesium carbonate is coated with a silicone resin is more preferable.
- the substance (X) as a filler, it is possible to sufficiently increase the thermal conductivity and heat resistance of the cured product of the die bond material. Further, the use of the substance (X) makes it difficult for cracks to occur in the cured product of the die bond material.
- anhydrous magnesium carbonate (X1) containing no crystal water represented by the chemical formula MgCO 3 . Since natural products contain impurities, physical properties such as heat resistance may not be stable when natural products are used. For this reason, it is desirable that the magnesium carbonate anhydrous salt (X1) is a synthetic product.
- the coated body (X2) has a core / shell structure in which magnesium carbonate anhydrous salt (X1) is a core and a coating layer formed of an organic resin, a silicone resin, or silica is a shell. Since the said covering body (X2) has the said coating layer, the dispersibility to resin is high. Furthermore, the use of the covering body (X2) having the covering layer can further improve the moisture and heat resistance of the cured product of the die bond material.
- the method of coating the surface of the magnesium carbonate anhydrous salt (X1) with the coating layer is not particularly limited.
- this method for example, a method of spray drying a dispersion in which magnesium carbonate anhydrous salt (X1) is dispersed in a solution in which a silane coupling agent which is an organic resin, a silicone resin or a silica raw material is dissolved, an organic resin
- a silane coupling agent which is an organic resin, a silicone resin or a silica raw material is dissolved
- an organic resin after dispersing magnesium carbonate anhydrous salt (X1) in a solution in which silicone resin is dissolved, an organic resin or an organic resin or a silicone resin poor solvent is added to the surface of magnesium carbonate anhydrous salt (X1).
- a medium in which magnesium carbonate anhydrous salt (X1) is dispersed to increase the molecular weight and dissolve in the medium.
- the organic resin is not particularly limited as long as it can cover the surface of anhydrous magnesium carbonate (X1).
- the organic resin may be a thermosetting resin or a thermoplastic resin.
- the organic resin examples include (meth) acrylic resin, styrene resin, urea resin, melamine resin, phenolic resin, thermoplastic urethane resin, thermosetting urethane resin, epoxy resin, thermoplastic polyimide.
- (meth) acrylic resins or styrene resins are preferred because there are many types of monomers, the covering layer can be designed widely, and the reaction can be easily controlled by heat or light.
- the styrene resin is not particularly limited.
- examples of the styrene resin include styrene, o-methyl styrene, m-methyl styrene, p-methyl styrene, p-methoxy styrene, p-phenyl styrene, p-chloro styrene, p-ethyl styrene, pn-butyl styrene.
- P-tert-butylstyrene P-tert-butylstyrene, pn-hexylstyrene, pn-octylstyrene, pn-nonylstyrene, pn-decylstyrene, pn-dodecylstyrene, 2,4-dimethylstyrene, Examples include 3,4-dichlorostyrene and divinylbenzene.
- Examples of the (meth) acrylic resin include alkyl (meth) acrylate, (meth) acrylonitrile, (meth) acrylamide, (meth) acrylic acid, glycidyl (meth) acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, Examples include ethylene glycol di (meth) acrylate, trimethylolpropane (meth) acrylate, and dipentaerythritol (meth) acrylate.
- alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, cumyl (meth) acrylate, cyclohexyl (meth) acrylate, and myristyl (meth) acrylate. , Palmityl (meth) acrylate, stearyl (meth) acrylate, and isobornyl (meth) acrylate.
- the thickness of the coating layer is preferably in the range of 10 nm to 1 ⁇ m.
- the thickness of the coating layer is 10 nm or more, the effect of improving the dispersibility of the cover (X2) in the resin and the effect of improving the heat and moisture resistance of the cured product of the die bond material are sufficiently obtained.
- the thickness of the coating layer is 1 ⁇ m or less, the thermal conductivity of the coated body (X2) is further increased.
- the shape of the substance (X) is not particularly limited.
- the substance (X) preferably has a substantially polyhedral shape or a shape having an aspect ratio which is a ratio of the major axis to the minor axis in the range of 1 to 2.
- the substance (X) can be filled in the die bond material at a high density, and therefore the heat dissipation of the cured product of the die bond material can be improved.
- Substance (X) has the formula MgCO 3 with crystal water does not include the spherical magnesium carbonate anhydrous salt represented (X1x1), and the spherical surface of the magnesium carbonate anhydrous salt (X1x1), an organic resin, a silicone resin or silica It is preferable that it is at least one substance (Xx1) in the coated body (X2x1).
- a coating body (X2x1) can be made spherical by coat
- the substance (Xx1) is preferably spherical.
- the substance (Xx1) can be filled at a high density in the die bond material, and therefore the heat dissipation of the cured product of the die bond material can be enhanced. Furthermore, the dielectric breakdown characteristics of the cured product of the die bond material can be enhanced.
- the spherical shape is not limited to a true spherical shape.
- the spherical shape includes a shape in which the true sphere is slightly flattened or distorted.
- a spherical shape has a shape with an aspect ratio in the range of 1 to 1.5, or many parts of the surface, for example, 30% or more of the surface is a curved surface rather than a flat surface, and a part of the surface
- a shape in which less than 70% of the surface is not a curved surface but a flat surface or the like is included.
- a shape in which 50% or more of the surface is a curved surface is more preferable, and a shape in which a portion of 70% or more of the surface is a curved surface is more preferable.
- the spherical magnesium carbonate anhydrous salt (X1x1), the coated body (X2x1) or the spherical substance (Xx1) using the spherical magnesium carbonate anhydrous salt is pulverized by a jet mill or a rotating rotor and a stator.
- -A material that has been spheroidized by a surface treatment device is preferred.
- the sphericity can be increased, and a spherical shape or a shape close to a spherical shape can be obtained.
- the aggregate of the substance (X) can be crushed by the spheroidization treatment.
- the substance (Xx1) can be filled in the die bond material at a high density. For this reason, the heat dissipation of the hardened
- the average particle size of the substance (X) is preferably in the range of 0.01 to 40 ⁇ m.
- the average particle size of the substance (X) is more preferably 0.1 ⁇ m or more, more preferably 10 ⁇ m or less, and still more preferably 3 ⁇ m or less.
- the average particle diameter is not less than the above lower limit, it is easy to fill the substance (X) with high density.
- the average particle size is not more than the above upper limit, the thickness of the die bond material in the optical semiconductor device does not become too thick, and the dielectric breakdown characteristics of the cured product of the die bond material can be further enhanced.
- the average particle diameter of the substance (X) is particularly preferably 3 ⁇ m or less. In this case, the substance (X) is more difficult to settle in the die bond material, and cracks in the die bond material are further less likely to occur.
- the “average particle size” is an average particle size obtained from a particle size distribution measurement result in a volume average measured by a laser diffraction particle size distribution measuring device.
- two or more kinds of substances (X) having different shapes may be used, and two or more kinds of substances having different particle sizes may be used.
- Substance (X) may be used.
- the substance (X) has a substantially polyhedral magnesium carbonate anhydrous salt (X1x2) not containing water of crystallization represented by the chemical formula MgCO 3 , and the surface of the substantially polyhedral magnesium carbonate anhydrous salt (X1x2) is an organic resin, It is also preferable that it is at least one substance (Xx2) in the covering (X2x2) covered with silicone resin or silica.
- the surface of the substantially polyhedral magnesium carbonate anhydrous salt (X1x2) is coated with an organic resin, silicone resin, or silica, whereby the coated body (X2x2) can be formed into a substantially polyhedral shape.
- the substance (Xx2) is preferably spherical.
- a filler (Y) other than the substance (X) is further included, and the filler (Y) is a plate-like filler.
- the substance (Xx2) is substantially polyhedral and includes a plate-like filler
- the substance (Xx2) and the plate-like filler are not in point contact but in surface contact in the die bond material, and the substance (Xx2) and The contact area with the plate filler is increased.
- a plurality of substances (Xx2) dispersed at a distance in the die bond material are brought into contact or close to each other via a plate-like filler, so that each filler in the die bond material is bridged or effectively brought into proximity. It becomes the structure made. For this reason, the thermal conductivity of the hardened
- the “substantially polyhedral shape” includes not only a polyhedral shape constituted only by a plane, which is a general definition of a polyhedron, but also a shape having a flat surface and a curved surface with a certain ratio or less.
- the substantially polyhedral shape includes, for example, a shape constituted by a curved surface of 10% or less of the surface and a plane of 90% or more of the surface.
- the substantially polyhedral shape is preferably a substantially cubic shape or a substantially rectangular parallelepiped shape.
- the content of the substance (X) is preferably in the range of 20 to 90% by weight.
- the content of the substance (X) in 100% by weight of the die bond material is more preferably 30% by weight or more, and more preferably 80% by weight or less.
- cured material of die-bonding material can be improved further as content of the said substance (X) is more than the said minimum.
- flexibility or adhesiveness of a die-bonding material can be improved further as content of the said substance (X) is below the said upper limit.
- the content of the substance (X) is more preferably in the range of 30 to 90% by weight in 100% by weight of the die bond material.
- the die bond material for optical semiconductor devices according to the present invention may contain a filler (Y) different from the substance (X) in addition to the substance (X).
- a filler (Y) By using the filler (Y), the thermal conductivity of the cured product of the die bond material can be further enhanced.
- a filler (Y) only 1 type may be used and 2 or more types may be used together.
- the filler (Y) may be an inorganic filler or an organic filler.
- the filler (Y) is preferably an inorganic filler.
- the filler (Y) is not particularly limited. From the viewpoint of further improving the heat dissipation of the cured product of the die bond material, the filler is made of alumina (aluminum oxide), silica, boron nitride, aluminum nitride, silicon nitride, carbon nitride, silicon carbide, zinc oxide, magnesium oxide, talc. It is preferably at least one selected from the group consisting of mica and hydrotalcite.
- the filler (Y) is at least one selected from the group consisting of aluminum oxide, boron nitride, silicon nitride and zinc oxide from the viewpoint of further increasing the thermal conductivity of the cured product of the die bond material and further improving the heat dissipation. Particularly preferred is a seed.
- the filler (Y) preferably has a thermal conductivity of 10 W / m ⁇ K or more.
- the thermal conductivity of the filler (Y) is more preferably 15 W / m ⁇ K or more, and further preferably 20 W / m ⁇ K or more.
- the upper limit of the thermal conductivity of the filler (Y) is not particularly limited. Inorganic fillers having a thermal conductivity of about 300 W / m ⁇ K are widely known, and inorganic fillers having a thermal conductivity of about 200 W / m ⁇ K are easily available.
- the filler (Y) is particularly preferably spherical.
- the filler (Y) can be filled at a high density, the heat dissipation of the cured product of the die bond material can be further enhanced.
- the average particle size of the filler (Y) is preferably in the range of 0.01 to 40 ⁇ m.
- the average particle diameter of the filler (Y) is preferably 0.01 ⁇ m or more, preferably 10 ⁇ m or less, more preferably 2 ⁇ m or less.
- the average particle diameter is not less than the above lower limit, it becomes easy to fill the filler (Y) at a high density.
- the average particle size is not more than the above upper limit, the dielectric breakdown characteristics of the cured product of the die bond material can be further enhanced.
- the average particle diameter of the filler (Y) is particularly preferably in the range of 0.01 to 2 ⁇ m. In this case, the filler (Y) is more difficult to settle in the die bond material, and cracks are less likely to occur in the die bond material.
- the above-mentioned “average particle diameter” is an average particle diameter obtained from a volume average particle size distribution measurement result measured with a laser diffraction particle size distribution measuring apparatus.
- the filler (Y) is preferably a plate-like filler.
- the average particle diameter of the substance (Xx2) is preferably in the range of 0.01 to 40 ⁇ m, and the average long diameter of the plate filler is preferably in the range of 0.01 to 10 ⁇ m.
- the average major axis of the plate-like filler is less than 0.01 ⁇ m, it is difficult to fill the plate-like filler, or the plate-like filler efficiently and sufficiently bridges between the substantially polyhedral substances (Xx2). May not be possible.
- the average major axis of the plate filler exceeds 10 ⁇ m, the insulating property of the die bond material tends to be lowered.
- the average major axis of the plate filler is more preferably in the range of 0.5 to 9 ⁇ m, and more preferably in the range of 1 to 9 ⁇ m.
- the average thickness of the plate filler is preferably 100 nm or more. When the thickness of the plate filler is 100 nm or more, the thermal conductivity of the cured product can be further increased.
- the aspect ratio of the plate filler is preferably in the range of 2-50. When the aspect ratio of the plate filler exceeds 50, it may be difficult to fill the plate filler.
- the aspect ratio of the plate filler is more preferably within the range of 3 to 45.
- the plate filler is preferably at least one of alumina and boron nitride.
- the thermal conductivity of the cured product of the die bond material can be further increased.
- the combined use of the substance (Xx2) and at least one of alumina and boron nitride can further increase the thermal conductivity of the cured product of the die bond material.
- the content thereof is appropriately determined depending on the type, particle size and shape of the substance (X) and the filler (Y). .
- the total content of the substance (X) and the inorganic filler (Y) in 100% by weight of the die bond material is preferably in the range of 60 to 90% by weight.
- the total content of the substance (X) and the inorganic filler (Y) is 60% by weight or more, the heat dissipation of the cured product can be further enhanced.
- the total content of the substance (X) and the filler (Y) is 90% by weight or less, the flexibility or adhesiveness of the die bond material is further increased.
- the content of the substance (X) is preferably 0.1% in a total of 100% by weight of the substance (X) and the filler (Y). % Or more, more preferably 1% by weight or more, particularly preferably 10% by weight or more, and most preferably 30% by weight or more.
- the content of the substance (X) in the die bond material of 100% by weight is more preferably in the range of 20 to 80% by weight.
- the substance (Xx2) and the plate filler are preferably contained in a volume ratio of 70:30 to 99: 1. Further, the total content of the substance (Xx2) and the plate filler in 100% by weight of the die bond material is preferably in the range of 60 to 90% by weight. Further, the content of the substance (Xx2) and the plate-like filler in the die bond material is 70:30 to 99: 1 by volume, and the substance (Xx2) in the die bond material 100% by weight and the content are The total content with the plate-like filler is more preferably in the range of 60 to 90% by weight. When the contents of the substance (X2x) and the plate-like filler are each in the preferred range, the thermal conductivity of the cured product of the die bond material can be further increased.
- the die bond material for an optical semiconductor device according to the present invention may further contain a coupling agent in order to impart adhesiveness.
- the coupling agent is not particularly limited, and examples thereof include a silane coupling agent.
- the silane coupling agent include vinyltriethoxysilane, vinyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, and ⁇ -methacryloxypropyltrimethoxy.
- Examples thereof include silane, ⁇ -aminopropyltrimethoxysilane, and N-phenyl-3-aminopropyltrimethoxysilane.
- a coupling agent only 1 type may be used and 2 or more types may be used together.
- the die bond material for an optical semiconductor device includes an ultraviolet absorber, an antioxidant, a solvent, a colorant, a filler, an antifoaming agent, a surface treatment agent, a flame retardant, a viscosity modifier, and a dispersant as necessary.
- the die bond material for optical semiconductor devices according to the present invention may be in the form of a paste or a film.
- the die bond material for an optical semiconductor device according to the present invention is preferably in a paste form. Even if the die bond material is in a paste form, the substance (X) is difficult to settle and can maintain a good dispersion state.
- the first silicone resin, the second silicone resin, and the hydrosilylation reaction catalyst are prepared separately in a liquid containing one or more of them, and a plurality of liquids are prepared immediately before use.
- the die-bonding material for optical semiconductor devices according to the present invention may be prepared by mixing.
- the liquid A containing the second silicone resin and the hydrosilylation reaction catalyst and the liquid B containing the first silicone resin are prepared separately, and the liquid A and the liquid B are mixed immediately before use.
- a die bond material may be prepared.
- the substance (X) and the filler (Y) may be included in the A liquid or the B liquid, respectively.
- the storage stability is improved by separately forming the second silicone resin and the hydrosilylation reaction catalyst and the first silicone resin into two liquids of the first liquid and the second liquid. Can be made.
- the method for producing a die bond material for an optical semiconductor device according to the present invention is not particularly limited. Or the method of mixing the said 1st silicone resin, the said 2nd silicone resin, the said catalyst for hydrosilylation reaction, the said substance (X), and the other component mix
- the die bond material for an optical semiconductor device according to the present invention is disposed on a connection target member such as a substrate or disposed on the lower surface of the optical semiconductor element, and the connection target member and the optical semiconductor element are connected via the die bond material.
- a connection target member such as a substrate or disposed on the lower surface of the optical semiconductor element
- the curing temperature of the die bond material for optical semiconductor devices according to the present invention is not particularly limited.
- the curing temperature of the die bond material for an optical semiconductor device is preferably 80 ° C. or higher, more preferably 100 ° C. or higher, preferably 180 ° C. or lower, more preferably 150 ° C. or lower.
- the curing temperature is equal to or higher than the preferable lower limit, the die bond material is sufficiently cured.
- the curing temperature is equal to or lower than the preferable upper limit, thermal deterioration of the die bonding material and the member bonded by the die bonding material hardly occurs.
- the curing method is not particularly limited, but it is preferable to use a step cure method.
- the step cure method is a method in which the resin is temporarily cured at a low temperature and then cured at a high temperature. By using the step cure method, curing shrinkage of the die bond material can be suppressed.
- An optical semiconductor device includes a die bond material for an optical semiconductor device, a connection target member, and an optical semiconductor element connected to the connection target member using the die bond material for an optical semiconductor device.
- optical semiconductor device examples include a light emitting diode device, a semiconductor laser device, and a photocoupler.
- Such optical semiconductor devices include, for example, backlights such as liquid crystal displays, illumination, various sensors, light sources such as printers and copiers, vehicle measuring instrument light sources, signal lights, indicator lights, display devices, and light sources for planar light emitters. , Displays, decorations, various lights, switching elements and the like.
- the light-emitting element that is the optical semiconductor element is not particularly limited as long as it is a light-emitting element using a semiconductor.
- the light-emitting element is a light-emitting diode
- an LED-type semiconductor material is laminated on a substrate, for example. Structure is mentioned.
- the semiconductor material include GaAs, GaP, GaAlAs, GaAsP, AlGaInP, GaN, InN, AlN, InGaAlN, and SiC.
- Examples of the material of the substrate include sapphire, spinel, SiC, Si, ZnO, and GaN single crystal. Further, a buffer layer may be formed between the substrate and the semiconductor material as necessary. Examples of the material of the buffer layer include GaN and AlN.
- FIG. 1 is a front sectional view showing an optical semiconductor device according to an embodiment of the present invention.
- the optical semiconductor device 1 of the present embodiment includes a housing 2 that is a connection target member and an optical semiconductor element 3.
- An optical semiconductor element 3 made of LEDs is mounted in the housing 2.
- the optical semiconductor element 3 is surrounded by an inner surface 2 a having light reflectivity of the housing 2.
- the optical semiconductor element 3 is used as a light emitting element formed of an optical semiconductor.
- the inner surface 2a of the housing 2 is formed so that the diameter of the inner surface 2a increases toward the opening end. Accordingly, among the light emitted from the optical semiconductor element 3, the light B ⁇ b> 1 that has reached the inner surface 2 a is reflected by the inner surface 2 a and travels forward of the optical semiconductor element 3.
- the optical semiconductor element 3 is connected to a lead electrode 4 provided in the housing 2 using a die bond material 5.
- the die bond material 5 is a die bond material for optical semiconductor devices.
- a bonding pad (not shown) provided on the optical semiconductor element 3 and the lead electrode 4 are electrically connected by a bonding wire 6.
- a sealing agent 7 is filled in a region surrounded by the inner surface 2 a so as to seal the optical semiconductor element 3 and the bonding wire 6.
- the die bond material 5 may be disposed so as to protrude from the bottom of the optical semiconductor element 3 and surround the periphery thereof, or may be disposed so as not to protrude from the bottom of the optical semiconductor element 3.
- the thickness of the die bond material 5 is preferably in the range of 2 to 50 ⁇ m.
- the optical semiconductor device 1 when the optical semiconductor element 3 is driven, light is emitted as indicated by a broken line A. In this case, not only the light irradiated from the optical semiconductor element 3 to the side opposite to the upper surface of the lead electrode 4, that is, the upper side, but also the light that reaches the die bond material 5 is reflected as indicated by the arrow B 2.
- FIG. 1 is merely an example of an optical semiconductor device according to the present invention, and the mounting structure of the optical semiconductor element 3 can be appropriately modified.
- Synthesis Example 1 Synthesis of First Silicone Resin A 1000 mL separable flask equipped with a thermometer, a dropping device and a stirrer was charged with 120 g of dimethyldimethoxysilane, 54 g of methyltrimethoxysilane, and 1,1,3,3-tetra 40 g of methyldisiloxane was added and stirred at 50 ° C. Into this, a solution of 1.2 g of hydrochloric acid and 83 g of water was slowly added dropwise. After the addition, the solution was stirred at 50 ° C. for 6 hours and reacted to obtain a reaction solution. Next, the polymer was obtained by removing the volatile component under reduced pressure.
- the polymer (A) had the following average composition formula (A1).
- Me represents a methyl group.
- the molecular weight of each polymer obtained in Synthesis Example 1 and Synthesis Examples 2 to 8 was measured by GPC measurement by adding 1 mL of tetrahydrofuran to 10 mg, stirring until dissolved.
- GPC measurement a measuring device manufactured by Waters (column: Shodex GPC LF-804 (length: 300 mm) x 2 manufactured by Showa Denko KK), measuring temperature: 40 ° C., flow rate: 1 mL / min, solvent: tetrahydrofuran, standard substance: Polystyrene) was used.
- Synthesis Example 2 Synthesis of First Silicone Resin
- a 1000 mL separable flask equipped with a thermometer, a dropping device and a stirrer 48 g of dimethyldimethoxysilane, 163 g of methyltrimethoxysilane, and 1,1,3,3-tetra 27 g of methyldisiloxane was added and stirred at 50 ° C.
- a solution of 1.2 g of hydrochloric acid and 102 g of water was slowly added dropwise. After the addition, the solution was stirred at 50 ° C. for 6 hours and reacted to obtain a reaction solution.
- the polymer was obtained by removing the volatile component under reduced pressure.
- polymer (B) was obtained.
- the number average molecular weight (Mn) of the obtained polymer (B) was 1500.
- the polymer (B) had the following average composition formula (B1).
- Me represents a methyl group.
- the polymer was obtained by removing the volatile component under reduced pressure.
- 150 g of hexane and 150 g of ethyl acetate were added, washed 10 times with 300 g of ion-exchanged water, reduced in pressure to remove volatile components, and polymer (C) was obtained.
- the number average molecular weight (Mn) of the obtained polymer (C) was 1300.
- the polymer (C) had the following average composition formula (C1).
- the mixture was stirred at 50 ° C. for 6 hours and reacted to obtain a reaction solution.
- the polymer was obtained by removing the volatile component under reduced pressure.
- 150 g of hexane and 150 g of ethyl acetate were added, washed 10 times with 300 g of ion-exchanged water, reduced in pressure to remove volatile components, and polymer (D) was obtained.
- the number average molecular weight (Mn) of the obtained polymer (D) was 1200.
- the polymer (D) had the following average composition formula (D1).
- Me represents a methyl group
- Ph represents a phenyl group
- Phe represents a phenylene group
- the content ratio of the phenyl group and the phenylene group (the content ratio of the aryl group) in the obtained polymer (D) was 26 mol%.
- the number average molecular weight (Mn) of the obtained polymer (E) was 1000.
- the polymer (E) had the following average composition formula (E1).
- Me represents a methyl group
- Ph represents a phenyl group
- Vi represents a vinyl group
- Phe represents a phenylene group.
- the content ratio of the phenyl group and the phenylene group (the content ratio of the aryl group) of the obtained polymer (E) was 31 mol%.
- Synthesis Example 6 Synthesis of Second Silicone Resin
- 41 g of trimethylmethoxysilane, 72 g of dimethyldimethoxysilane, 81 g of methyltrimethoxysilane, and vinylmethyldimethoxysilane 52 g was added and stirred at 50 ° C.
- a solution obtained by dissolving 0.8 g of potassium hydroxide in 114 g of water was slowly dropped therein, and after the dropwise addition, the mixture was stirred at 50 ° C. for 6 hours and reacted to obtain a reaction solution.
- 0.9 g of acetic acid was added to the reaction solution, the pressure was reduced to remove volatile components, and potassium acetate was removed by filtration to obtain a polymer (F).
- the number average molecular weight (Mn) of the obtained polymer (F) was 2000.
- the polymer (F) had the following average composition formula (F1).
- Me represents a methyl group
- Vi represents a vinyl group
- the number average molecular weight (Mn) of the obtained polymer (G) was 2200.
- the polymer (G) had the following average composition formula (G1).
- Me represents a methyl group
- Ph represents a phenyl group
- Vi represents a vinyl group
- the content ratio of the phenyl group of the obtained polymer (G) was 14 mol%.
- the number average molecular weight (Mn) of the obtained polymer (H) was 1500.
- the polymer (H) had the following average composition formula (H1).
- Me represents a methyl group
- Ph represents a phenyl group
- Vi represents a vinyl group
- Phe represents a phenylene group.
- the content ratio of the phenyl group and the phenylene group (the content ratio of the aryl group) of the obtained polymer (H) was 16 mol%.
- Example 1 5 parts by weight of polymer A, 5 parts by weight of polymer F, 0.02 parts by weight of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex of platinum, and the magnesium carbonate anhydrous salt (X1) 60 parts by weight of polyhedral synthetic magnesite (manufactured by Kamishima Chemical Co., Ltd., trade name: MSL, average particle diameter 6 ⁇ m) was mixed and defoamed to obtain a die bond material for an optical semiconductor device.
- X1 magnesium carbonate anhydrous salt
- Example 2 Magnesite (manufactured by Kamishima Chemical Industry Co., Ltd., trade name: MSL, average particle diameter 6 ⁇ m) was synthesized into synthetic magnesite 6 ⁇ m (acrylic resin-coated synthetic magnesite 6 ⁇ m) whose surface obtained in Synthesis Example 9 was coated with methacrylic resin. A die bond material was obtained in the same manner as in Example 1 except that the change was made.
- Example 3 Magnesite (manufactured by Kamishima Chemical Industry Co., Ltd., trade name: MSL, average particle diameter 6 ⁇ m) was synthesized into synthetic magnesite 6 ⁇ m (silicone resin-coated synthetic magnesite 6 ⁇ m) whose surface obtained in Synthesis Example 10 was coated with a silicone resin. A die bond material was obtained in the same manner as in Example 1 except that the change was made.
- Example 4 Magnesite (product name: MSL, average particle diameter 6 ⁇ m, manufactured by Kamishima Chemical Industry Co., Ltd.) corresponding to anhydrous magnesium carbonate (X1), synthetic magnesite 6 ⁇ m whose surface obtained in Synthesis Example 11 was coated with silica ( A die bond material was obtained in the same manner as in Example 1 except that the silica-coated synthetic magnesite was changed to 6 ⁇ m.
- MSL average particle diameter 6 ⁇ m, manufactured by Kamishima Chemical Industry Co., Ltd.
- Example 5 A die bond material was obtained in the same manner as in Example 1 except that 5 parts by weight of polymer A was changed to 5 parts by weight of polymer B, and 5 parts by weight of polymer F was changed to 5 parts by weight of polymer G.
- Example 6 A die bond material was obtained in the same manner as in Example 1 except that 5 parts by weight of polymer A was changed to 5 parts by weight of polymer C and 5 parts by weight of polymer F were changed to 5 parts by weight of polymer G.
- Example 7 A die bond material was obtained in the same manner as in Example 1 except that 5 parts by weight of polymer A was changed to 5 parts by weight of polymer D and 5 parts by weight of polymer F were changed to 5 parts by weight of polymer G.
- Example 8 A die bond material was obtained in the same manner as in Example 1 except that 5 parts by weight of polymer A was changed to 5 parts by weight of polymer E and 5 parts by weight of polymer F were changed to 5 parts by weight of polymer G.
- Example 9 A die bond material was obtained in the same manner as in Example 1 except that 5 parts by weight of polymer A was changed to 5 parts by weight of polymer E and 5 parts by weight of polymer F was changed to 5 parts by weight of polymer H.
- Synthetic magnesite (trade name: MSL, manufactured by Kamishima Chemical Industry Co., Ltd., trade name: MSL, average particle size: 6 ⁇ m) is substantially polyhedral synthetic magnesite (trade name: manufactured by Kamishima Chemical Industry Co., Ltd.) corresponding to the magnesium carbonate anhydrous salt (X1).
- a die bond material was obtained in the same manner as in Example 1 except that MSS was changed to an average particle diameter of 1.2 ⁇ m.
- Synthetic magnesite 1.2 ⁇ m (acrylic resin-coated synthetic magnesite 1) whose surface obtained in Synthesis Example 12 was coated with methacrylic resin (manufactured by Kamishima Chemical Co., Ltd., trade name: MSL, average particle size 6 ⁇ m).
- MSL methacrylic resin
- Example 12 Magnesite (manufactured by Kamishima Chemical Industry Co., Ltd., trade name: MSL, average particle diameter 6 ⁇ m), synthetic magnesite 1.2 ⁇ m (silicone resin-coated synthetic magnesite 1 whose surface obtained in Synthesis Example 13 was coated with a silicone resin) A die bond material was obtained in the same manner as in Example 1, except that the thickness was changed to 2 ⁇ m).
- Example 13 Magnesite (manufactured by Kamishima Chemical Co., Ltd., trade name: MSL, average particle size 1.2 ⁇ m), synthetic magnesite 1.2 ⁇ m (silica-coated synthetic magnesite 1 whose surface obtained in Synthesis Example 14 was coated with silica) A die bond material was obtained in the same manner as in Example 1, except that the thickness was changed to 2 ⁇ m).
- Example 14 In the same manner as in Example 1, except that 10 parts by weight of aluminum nitride corresponding to the filler (Y) (manufactured by Tokuyama Corporation, average particle size 0.6 ⁇ m, thermal conductivity 100 W / m ⁇ K) was further mixed. The material was obtained.
- Example 15 Except that 10 parts by weight of boron nitride corresponding to the filler (Y) (manufactured by Mizushima Alloy Iron Co., Ltd., average particle size 0.5 ⁇ m, thermal conductivity 50 W / m ⁇ K) was further mixed, the same as in Example 1 A die bond material was obtained.
- Example 16 Except that 10 parts by weight of silicon nitride corresponding to the filler (Y) (manufactured by Denki Kagaku Kogyo Co., Ltd., average particle size 1.5 ⁇ m, thermal conductivity 35 W / m ⁇ K) was further mixed, the same as in Example 1 A die bond material was obtained.
- Example 17 In the same manner as in Example 1, except that 10 parts by weight of zinc oxide corresponding to the filler (Y) (manufactured by Hakusuitec Co., Ltd., average particle size of 0.2 ⁇ m, thermal conductivity of 25 W / m ⁇ K) was further mixed. The material was obtained.
- Example 18 In the same manner as in Example 1, except that 10 parts by weight of alumina corresponding to the filler (Y) (manufactured by Sumitomo Chemical Co., Ltd., average particle size 0.4 ⁇ m, thermal conductivity 20 W / m ⁇ K) was further mixed. The material was obtained.
- the thermal conductivity of the obtained evaluation sample was measured using a thermal conductivity meter “Rapid thermal conductivity meter QTM-500” manufactured by Kyoto Electronics Industry Co., Ltd. In addition, it is better that the thermal conductivity is high, and the thermal conductivity needs to be 0.3 W / m ⁇ K or more.
- Dielectric breakdown voltage An evaluation sample used in the above (1) evaluation of thermal conductivity was prepared. Using a withstand voltage tester (MODEL7473, manufactured by EXTECH Electronics), an AC voltage was applied between the cured products so that the voltage increased at a rate of 1 kV / second. The voltage at which the cured product was broken was defined as the dielectric breakdown voltage.
- Adhesiveness die shear strength
- a die-bonding material for an optical semiconductor device was applied on an Ag-plated Cu substrate so that the adhesion area was 3 mm ⁇ 3 mm, and a 3 mm square Si chip was placed thereon to obtain a test sample.
- the obtained test sample was heated at 150 ° C. for 3 hours to cure the die bond material.
- the die shear strength (before moisture absorption) at 185 ° C. was evaluated at a speed of 300 ⁇ / sec using a die shear tester (manufactured by Arctech, model number: DAGE 4000).
- test sample was left in a high-temperature and high-humidity oven at 85 ° C. and 85 RH% for 100 hours, and then the die shear strength (after moisture absorption) at 185 ° C. was evaluated.
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Abstract
Description
本発明に係る光半導体装置用ダイボンド材に含まれている第1のシリコーン樹脂は、珪素原子に結合した水素原子を有する。該水素原子は、珪素原子に直接結合している。ダイボンド材のガスバリア性をより一層高める観点からは、第1のシリコーン樹脂は、珪素原子に結合した水素原子と、アリール基とを有することが好ましい。該アリール基としては、無置換のフェニル基、置換フェニル基、無置換のフェニレン基、及び置換フェニレン基が挙げられる。
本発明に係る光半導体装置用ダイボンド材に含まれている第2のシリコーン樹脂は、アルケニル基を有する。該アルケニル基は、珪素原子に直接結合している。上記アルケニル機の炭素-炭素二重結合における炭素原子が、珪素原子に結合していてもよく、上記アルケニル基の炭素-炭素二重結合における炭素原子とは異なる炭素原子が、珪素原子に結合していてもよい。
上記第1,第2のシリコーン樹脂のアルコキシ基の含有量の好ましい下限は0.5モル%、より好ましい下限は1モル%、好ましい上限は10モル%、より好ましい上限は5モル%である。アルコキシ基の含有量が上記好ましい範囲内であると、ダイボンド材の密着性を高めることができる。
本発明に係る光半導体装置用ダイボンド材に含まれているヒドロシリル化反応用触媒は、上記第1のシリコーン樹脂中の珪素原子に結合した水素原子と、上記第2のシリコーン樹脂中のアルケニル基とをヒドロシリル化反応させる触媒である。
本発明に係る光半導体装置用ダイボンド材に含まれている物質(X)は、化学式MgCO3で示される結晶水を含まない炭酸マグネシウム無水塩(X1)、及び該炭酸マグネシウム無水塩の表面が、有機樹脂、シリコーン樹脂又はシリカにより被覆されている被覆体(X2)の内の少なくとも一方である。物質(X)として、上記炭酸マグネシウム無水塩(X1)のみが用いられてもよく、被覆体(X2)のみが用いられてもよく、炭酸マグネシウム無水塩(X1)と上記被覆体(X2)との双方が用いられてもよい。
本発明に係る光半導体装置用ダイボンド材は、上記物質(X)に加えて、該物質(X)とは異なるフィラー(Y)を含んでいてもよい。フィラー(Y)の使用により、ダイボンド材の硬化物の熱伝導性をより一層高めることができる。フィラー(Y)は1種のみが用いられてもよく、2種以上が併用されてもよい。
本発明に係る光半導体装置用ダイボンド材は、接着性を付与するために、カップリング剤をさらに含有してもよい。
本発明に係る光半導体装置用ダイボンド材は、必要に応じて、紫外線吸収剤、酸化防止剤、溶剤、着色剤、充填剤、消泡剤、表面処理剤、難燃剤、粘度調節剤、分散剤、分散助剤、表面改質剤、可塑剤、防黴剤、レベリング剤、安定剤、カップリング剤、タレ防止剤又は蛍光体等を含有してもよい。
本発明に係る光半導体装置用ダイボンド材は、ペースト状であってもよく、フィルム状であってもよい。本発明に係る光半導体装置用ダイボンド材は、ペースト状であることが好ましい。ダイボンド材がペースト状であっても、上記物質(X)は沈降し難く、良好な分散状態を維持できる。
本発明に係る光半導体装置は、光半導体装置用ダイボンド材と、接続対象部材と、上記光半導体装置用ダイボンド材を用いて上記接続対象部材に接続された光半導体素子とを備える。
本実施形態の光半導体装置1は、接続対象部材であるハウジング2と、光半導体素子3とを有する。ハウジング2内にLEDからなる光半導体素子3が実装されている。この光半導体素子3の周囲を、ハウジング2の光反射性を有する内面2aが取り囲んでいる。本実施形態では、光半導体により形成された発光素子として、光半導体素子3が用いられている。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、ジメチルジメトキシシラン120g、メチルトリメトキシシラン54g、及び1,1,3,3-テトラメチルジシロキサン40gを入れ、50℃で攪拌した。その中に、塩酸1.2gと水83gとの溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、減圧して揮発成分を除去してポリマーを得た。得られたポリマーにヘキサン150gと酢酸エチル150gとを添加し、イオン交換水300gで10回洗浄を行い、減圧して揮発成分を除去してポリマー(A)を得た。
得られたポリマー(A)の数平均分子量(Mn)は1500であった。29Si-NMRより化学構造を同定した結果、ポリマー(A)は、下記の平均組成式(A1)を有していた。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、ジメチルジメトキシシラン48g、メチルトリメトキシシラン163g、及び1,1,3,3-テトラメチルジシロキサン27gを入れ、50℃で攪拌した。その中に、塩酸1.2gと水102gとの溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、減圧して揮発成分を除去してポリマーを得た。得られたポリマーにヘキサン150gと酢酸エチル150gとを添加し、イオン交換水300gで10回洗浄を行い、減圧して揮発成分を除去してポリマー(B)を得た。
得られたポリマー(B)の数平均分子量(Mn)は1500であった。29Si-NMRより化学構造を同定した結果、ポリマー(B)は、下記の平均組成式(B1)を有していた。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、ジメチルジメトキシシラン48g、ビニルメチルジメトキシシラン26g、フェニルトリメトキシシラン119g、メチルトリメトキシシラン54g、及び1,1,3,3-テトラメチルジシロキサン27gを入れ、50℃で攪拌した。その中に、塩酸1.2gと水101gとの溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、減圧して揮発成分を除去してポリマーを得た。得られたポリマーにヘキサン150gと酢酸エチル150gとを添加し、イオン交換水300gで10回洗浄を行い、減圧して揮発成分を除去してポリマー(C)を得た。
上記式(C1)中、Meはメチル基、Phはフェニル基、Viはビニル基を示す。
得られたポリマー(C)のフェニル基の含有比率は18モル%であった。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、ジメチルジメトキシシラン26g、フェニルトリメトキシシラン119g、メチルトリメトキシシラン54g、1,4-ビス(ジメチルメトキシシリル)ベンゼン40g、及び1,1,3,3-テトラメチルジシロキサン27gを入れ、50℃で攪拌した。その中に、塩酸1.4gと水99gとの溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、減圧して揮発成分を除去してポリマーを得た。得られたポリマーにヘキサン150gと酢酸エチル150gとを添加し、イオン交換水300gで10回洗浄を行い、減圧して揮発成分を除去してポリマー(D)を得た。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、ビニルメチルジメトキシシラン26g、フェニルトリメトキシシラン119g、メチルトリメトキシシラン54g、1,4-ビス(ジメチルメトキシシリル)ベンゼン40g、及び1,1,3,3-テトラメチルジシロキサン27gを入れ、50℃で攪拌した。その中に、水酸化カリウム0.8gを水114gに溶かした溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、反応液に酢酸0.9gを加え、減圧して揮発成分を除去し、酢酸カリウムをろ過により除去して、ポリマー(E)を得た。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、トリメチルメトキシシラン41g、ジメチルジメトキシシラン72g、メチルトリメトキシシラン81g、及びビニルメチルジメトキシシラン52gを入れ、50℃で攪拌した。その中に、水酸化カリウム0.8gを水114gに溶かした溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、反応液に酢酸0.9gを加え、減圧して揮発成分を除去し、酢酸カリウムをろ過により除去して、ポリマー(F)を得た。
トリメチルメトキシシラン41g、ビニルメチルジメトキシシラン52g、メチルトリメトキシシラン54g、及びフェニルトリメトキシシラン158gを入れ、50℃で攪拌した。その中に、水酸化カリウム0.8gを水114gに溶かした溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、反応液に酢酸0.9gを加え、減圧して揮発成分を除去し、酢酸カリウムをろ過により除去して、ポリマー(G)を得た。
温度計、滴下装置及び攪拌機を備えた1000mLのセパラブルフラスコに、トリメチルメトキシシラン41g、ビニルメチルジメトキシシラン52g、メチルトリメトキシシラン54g、フェニルトリメトキシシラン119g、及び1,4-ビス(ジメチルメトキシシリル)ベンゼン40gを入れ、50℃で攪拌した。その中に、水酸化カリウム0.8gを水114gに溶かした溶液をゆっくりと滴下し、滴下後に50℃で6時間攪拌し、反応させて、反応液を得た。次に、反応液に酢酸0.9gを加え、減圧して揮発成分を除去し、酢酸カリウムをろ過により除去して、ポリマー(H)を得た。
攪拌機、ジャケット、還流冷却器及び温度計が取り付けられた2Lの容器内に、分散媒体であるメチルイソブチルケトン1000gと、略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)600gと、ジペンタエリスリトールヘキサメタクリレート50gと、アゾビスイソブチロニトリル1gとを加え、攪拌により混合し、表面処理溶液中にマグネサイトが分散された分散液を調製した。その後、減圧して容器内の脱酸素を行った後、窒素により内部を大気圧まで戻し、容器内を窒素雰囲気とした。その後、攪拌しながら容器内を70℃に加熱し、8時間反応を行った。室温まで冷却した後、反応溶液をセントルにより脱溶剤し、更に真空乾燥することにより、表面がメタクリル樹脂により被覆された合成マグネサイト6μm(アクリル樹脂被覆合成マグネサイト6μm)を得た。
表面を被覆するためのモノマーであるジペンタエリスリトールヘキサメタクリレートを、両末端メタクリロキシ基含有シリコーン(チッソ社製、商品名:サイラプレーンFM-7721)に変更したこと以外は合成例9と同様にして、表面がシリコーン樹脂により被覆された合成マグネサイト6μm(シリコーン樹脂被覆合成マグネサイト6μm)を得た。
攪拌機、ジャケット、還流冷却器及び温度計が取り付けられた2Lの容器内に、分散媒体であるpH9に調整されたイオン交換水1,000gと、略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)600gと、テトラエトキシシラン60gとを加え、攪拌することにより混合し、表面処理溶液中にマグネサイトが分散された分散液を調製した。その後、攪拌しながら容器内を70℃に加熱し、8時間反応を行った。室温まで冷却した後、反応溶液をセントルにより脱水し、更に真空乾燥することにより、表面がシリカにより被覆された合成マグネサイト6μm(シリカ被覆合成マグネサイト6μm)を得た。
略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSS、平均粒子径1.2μm)に変更したこと以外は合成例9と同様にして、表面がメタクリル樹脂により被覆された合成マグネサイト1.2μm(アクリル樹脂被覆合成マグネサイト1.2μm)を得た。
略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSS、平均粒子径1.2μm)に変更したこと以外は合成例10と同様にして、表面がシリコーン樹脂により被覆された合成マグネサイト1.2μm(シリコーン樹脂被覆合成マグネサイト1.2μm)を得た。
略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSS、平均粒子径1.2μm)に変更したこと以外は合成例11と同様にして、表面がシリカにより被覆された合成マグネサイト1.2μm(シリカ被覆合成マグネサイト1.2μm)を得た。
ポリマーA5重量部、ポリマーF5重量部、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン錯体0.02重量部、及び上記炭酸マグネシウム無水塩(X1)に相当する略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)60重量部を混合し、脱泡を行い、光半導体装置用ダイボンド材を得た。
マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、合成例9で得られた表面がメタクリル樹脂により被覆された合成マグネサイト6μm(アクリル樹脂被覆合成マグネサイト6μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、合成例10で得られた表面がシリコーン樹脂により被覆された合成マグネサイト6μm(シリコーン樹脂被覆合成マグネサイト6μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
炭酸マグネシウム無水塩(X1)に相当するマグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、合成例11で得られた表面がシリカにより被覆された合成マグネサイト6μm(シリカ被覆合成マグネサイト6μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
ポリマーA5重量部をポリマーB5重量部に変更したこと、並びにポリマーF5重量部をポリマーG5重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
ポリマーA5重量部をポリマーC5重量部に変更したこと、並びにポリマーF5重量部をポリマーG5重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
ポリマーA5重量部をポリマーD5重量部に変更したこと、並びにポリマーF5重量部をポリマーG5重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
ポリマーA5重量部をポリマーE5重量部に変更したこと、並びにポリマーF5重量部をポリマーG5重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
ポリマーA5重量部をポリマーE5重量部に変更したこと、ポリマーF5重量部をポリマーH5重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、上記炭酸マグネシウム無水塩(X1)に相当する略多面体状の合成マグネサイト(神島化学工業社製、商品名:MSS、平均粒子径1.2μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、合成例12で得られた表面がメタクリル樹脂により被覆された合成マグネサイト1.2μm(アクリル樹脂被覆合成マグネサイト1.2μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、合成例13で得られた表面がシリコーン樹脂により被覆された合成マグネサイト1.2μm(シリコーン樹脂被覆合成マグネサイト1.2μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径1.2μm)を、合成例14で得られた表面がシリカにより被覆された合成マグネサイト1.2μm(シリカ被覆合成マグネサイト1.2μm)に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
上記フィラー(Y)に相当する窒化アルミニウム(トクヤマ社製、平均粒子径0.6μm、熱伝導率100W/m・K)10重量部をさらに混合したこと以外は実施例1と同様にして、ダイボンド材を得た。
上記フィラー(Y)に相当する窒化ホウ素(水島合金鉄社製、平均粒子径0.5μm、熱伝導率50W/m・K)10重量部をさらに混合したこと以外は実施例1と同様にして、ダイボンド材を得た。
上記フィラー(Y)に相当する窒化ケイ素(電気化学工業社製、平均粒子径1.5μm、熱伝導率35W/m・K)10重量部をさらに混合したこと以外は実施例1と同様にして、ダイボンド材を得た。
上記フィラー(Y)に相当する酸化亜鉛(ハクスイテック社製、平均粒子径0.2μm、熱伝導率25W/m・K)10重量部をさらに混合したこと以外は実施例1と同様にして、ダイボンド材を得た。
上記フィラー(Y)に相当するアルミナ(住友化学社製、平均粒子径0.4μm、熱伝導率20W/m・K)10重量部をさらに混合したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、酸化マグネシウム(堺化学工業社製、平均粒子径1.1μm、熱伝導率30W/m・K)60重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、結晶水含有炭酸マグネシウム(神島化学工業社製、平均粒子径9μm、熱伝導率15W/m・K)60重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、酸化亜鉛(ハクスイテック社製、平均粒子径0.2μm、熱伝導率25W/m・K)60重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、アルミナ(住友化学社製、平均粒子径0.4μm、熱伝導率20W/m・K)60重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
合成マグネサイト(神島化学工業社製、商品名:MSL、平均粒子径6μm)を、シリカ(トクヤマ社製、平均粒子径15μm、熱伝導率2W/m・K)60重量部に変更したこと以外は実施例1と同様にして、ダイボンド材を得た。
(1)熱伝導率
実施例及び比較例で得られた各光半導体装置用ダイボンド材を150℃で3時間加熱し、硬化させ、100mm×100mm×厚さ50μmの硬化物を得た。この硬化物を評価サンプルとした。
上記(1)熱伝導率の評価で用いた評価サンプルを用意した。耐電圧試験器(MODEL7473、EXTECH Electronics社製)を用いて、硬化物間に、1kV/秒の速度で電圧が上昇するように、交流電圧を印加した。硬化物が破壊した電圧を、絶縁破壊電圧とした。
実施例及び比較例で得られた各光半導体装置用ダイボンド材を150℃で3時間加熱し、硬化させ、100mm×100mm×厚さ1mmの硬化物を得た。この硬化物を直径6cmの円形に裁断し、評価サンプルを得た。
AgメッキしたCu基板上に、接着面積が3mm×3mmになるように光半導体装置用ダイボンド材を塗布し、3mm角のSiチップを載せて、テストサンプルを得た。
実施例及び比較例で得られた各光半導体装置用ダイボンド材を23℃及び50%RHの条件で100時間放置した後、フィラーの沈降の有無を目視にて確認した。沈降が生じていない場合を「○」、沈降が生じている場合を「×」と判定した。
硬化物を半田リフロー炉(プレヒート150℃×100秒+リフロー[最高温度260℃])に3回通過させた後に、硬化物にクラックが生じているか否かを観察した。ダイボンド材にクラックが生じている場合を「×」、クラックが生じていない場合を「○」と判定した。
結果を下記の表1,2に示す。
2…ハウジング
2a…内面
3…光半導体素子
4…リード電極
5…ダイボンド材
6…ボンディングワイヤー
7…封止剤
Claims (7)
- 珪素原子に結合した水素原子を有する第1のシリコーン樹脂と、
珪素原子に結合した水素原子を有さず、かつアルケニル基を有する第2のシリコーン樹脂と、
ヒドロシリル化反応用触媒と、
化学式MgCO3で示される結晶水を含まない炭酸マグネシウム無水塩、及び該炭酸マグネシウム無水塩の表面が、有機樹脂、シリコーン樹脂又はシリカにより被覆されている被覆体の内の少なくとも一方の物質とを含む、光半導体装置用ダイボンド材。 - 前記第1のシリコーン樹脂が、下記式(1A)又は下記式(1B)で表され、かつ珪素原子に結合した水素原子を有する第1のシリコーン樹脂であり、
前記第2のシリコーン樹脂が、下記式(51A)又は下記式(51B)で表され、かつ珪素原子に結合した水素原子を有さず、かつアルケニル基を有する第2のシリコーン樹脂である、請求項1に記載の光半導体装置用ダイボンド材。
- 前記第1のシリコーン樹脂が、珪素原子に結合した水素原子と、アルケニル基とを有する第1のシリコーン樹脂である、請求項1又は2に記載の光半導体装置用ダイボンド材。
- 前記物質の平均粒子径が3μm以下である、請求項1~3のいずれか1項に記載の光半導体装置用ダイボンド材。
- 前記物質とは異なり、平均粒子径が0.01~2μmであり、かつ熱伝導率が10W/m・K以上であるフィラーをさらに含む、請求項1~4のいずれか1項に記載の光半導体装置用ダイボンド材。
- 前記フィラーが、酸化アルミニウム、窒化ホウ素、窒化ケイ素及び酸化亜鉛からなる群から選択された少なくとも1種である、請求項5に記載の光半導体装置用ダイボンド材。
- 請求項1~6のいずれか1項の光半導体装置用ダイボンド材と、
接続対象部材と、
前記光半導体装置用ダイボンド材を用いて前記接続対象部材に接続された光半導体素子とを備える、光半導体装置。
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US13/392,911 US20120153342A1 (en) | 2010-06-08 | 2011-06-07 | Die-bonding material for optical semiconductor devices and optical semiconductor device using same |
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CN2011800049417A CN102668141A (zh) | 2010-06-08 | 2011-06-07 | 光半导体装置用晶片接合材料及使用其的光半导体装置 |
JP2011529084A JP4911806B2 (ja) | 2010-06-08 | 2011-06-07 | 光半導体装置用ダイボンド材及びそれを用いた光半導体装置 |
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EP2581954A4 (en) | 2014-07-30 |
KR101265913B1 (ko) | 2013-05-20 |
JPWO2011155482A1 (ja) | 2013-08-01 |
US20120153342A1 (en) | 2012-06-21 |
JP4911806B2 (ja) | 2012-04-04 |
TW201213485A (en) | 2012-04-01 |
JP2012049567A (ja) | 2012-03-08 |
EP2581954A1 (en) | 2013-04-17 |
KR20120038412A (ko) | 2012-04-23 |
CN102668141A (zh) | 2012-09-12 |
TWI398503B (zh) | 2013-06-11 |
JP5065520B2 (ja) | 2012-11-07 |
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