WO2019078046A1 - 硬化性シリコーン組成物及び光半導体装置 - Google Patents
硬化性シリコーン組成物及び光半導体装置 Download PDFInfo
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- WO2019078046A1 WO2019078046A1 PCT/JP2018/037485 JP2018037485W WO2019078046A1 WO 2019078046 A1 WO2019078046 A1 WO 2019078046A1 JP 2018037485 W JP2018037485 W JP 2018037485W WO 2019078046 A1 WO2019078046 A1 WO 2019078046A1
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- curable silicone
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- HMVBQEAJQVQOTI-UHFFFAOYSA-N 3,5-dimethylhex-3-en-1-yne Chemical compound CC(C)C=C(C)C#C HMVBQEAJQVQOTI-UHFFFAOYSA-N 0.000 description 1
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
Definitions
- the present invention relates to a curable silicone composition, and an optical semiconductor device produced using the composition.
- a curable silicone composition is cured to form a cured product excellent in transparency, electrical insulation, heat resistance, and weather resistance, and thus, it can be used as a sealing agent, adhesive, or covering agent for electric and electronic parts. It is used.
- a curable silicone composition for example, an organopolysiloxane having an alkenyl group and a phenyl group, an organopolysiloxane having a silicon-bonded hydrogen atom in one molecule, an organopoly having an epoxy-containing organic group and an alkenyl group.
- Curable silicone composition comprising a siloxane and a catalyst for hydrosilylation reaction (see Patent Document 1), having at least two alkenyl groups in one molecule, and at least 30 mol% of all the silicon-bonded organic groups being aryl groups
- Organopolysiloxanes having at least two silicon-bonded hydrogen atoms in one molecule, wherein at least 15 mol% of all organic groups bonded to silicon atoms are aryl groups, in one molecule, silicon atoms bonded At least 5 mol% of all organic groups are alkenyl groups, Kutomo 15 mol% are aryl groups include at least 10 mole percent organopolysiloxane is an epoxy-containing organic group, and a curable silicone composition comprising a hydrosilylation catalyst (see Patent Document 2).
- curable silicone composition When such a curable silicone composition is used as a sealant for a light emitting element in an optical semiconductor device such as a light emitting diode (LED), the curable silicone composition converts the wavelength of light emitted from the light emitting element. A phosphor is blended into the composition.
- the optical semiconductor devices manufactured using these curable silicone compositions have problems such as insufficient light extraction efficiency and changes in light extraction efficiency with time.
- the present invention is a curable silicone composition capable of forming an optical semiconductor device having a good light extraction efficiency from a light emitting element and a small rate of change over time, and a good light extraction efficiency from a light emitting element. It is an object of the present invention to provide an optical semiconductor device having a small change rate of
- the curable silicone composition of the present invention is (A) Average composition formula: R 11 a SiO (4-a) / 2 (Wherein, R 11 represents a non-substituted or halogen-substituted monovalent hydrocarbon group, an alkoxy group, or a hydroxyl group, provided that at least two of R 11 in one molecule are alkenyl groups, and at least 5 moles of all R 11 % Is an aryl group, and a is a number of 0.6 to 2.2.) Organopolysiloxanes represented by (B) An alkenyl group in an organopolysiloxane ⁇ (A) component having at least two silicon-bonded hydrogen atoms in one molecule and at least 5 mol% of silicon-bonded groups other than hydrogen atoms being an aryl group.
- the amount of silicon-bonded hydrogen atoms in this component is 0.1 to 5 moles per mole, ⁇ (C) Average unit formula: (R 21 SiO 3/2 ) b (R 22 SiO 3/2 ) c (R 23 2 SiO 2/2 ) d (R 23 3 SiO 1/2 ) e (XO 1/2 ) f
- R 21 is an aryl group
- R 22 is an alkenyl group
- R 23 is independently an alkyl group, an alkenyl group, an aryl group, or an epoxy-containing organic group, provided that the sum of R 21 , R 22 and R 23 in one molecule is
- at least 5 mol% is an alkenyl group
- at least 15 mol% is an aryl group
- at least 10 mol% is an epoxy-containing organic group
- X is a hydrogen atom or an alkyl group
- b to f are When the sum of b to e is 1, respectively, b is a positive number, c is a positive number
- Organopolysiloxanes (0.1 to 20 parts by mass with respect to a total of 100 parts by mass of the (A) component and the (B) component), and (D) a hydrosilylation-enhancing amount of the composition (D) It comprises at least a reaction catalyst.
- the component (A) has a general formula: R 12 3 SiO (R 12 2 SiO) m SiR 12 3 (Wherein, R 12 is independently an unsubstituted or halogen-substituted monovalent hydrocarbon group, provided that at least two of R 12 are alkenyl groups in one molecule, and at least 5 mol% of all R 12 are An aryl group, m is an integer of 5 to 1,000.)
- R 12 is The same as above except that in one molecule at least two of R 12 are alkenyl groups, at least 5 mol% of all R 12 are aryl groups, Y is a hydrogen atom or an alkyl group, g to k And g is
- the component (B) has a general formula: R 31 3 SiO (R 31 2 SiO) n SiR 31 3 (Wherein, R 31 independently represents an unsubstituted or halogen-substituted monovalent hydrocarbon group having no aliphatic unsaturated bond, or a hydrogen atom, provided that at least two of R 31 in one molecule are hydrogen) At least 5 mol% of all R 31 which is an atom, excluding a hydrogen atom, is an aryl group, and n is an integer of 1 to 1,000.)
- a linear organopolysiloxane represented by and / or an average unit formula: (R 31 SiO 3/2 ) p (R 31 2 SiO 2/2 ) q (R 31 3 SiO 1/2 ) r (SiO 4/2 ) s (ZO 1/2 ) t ⁇ wherein, R 31 represents The same as above except that in one molecule at least two of R 31 are hydrogen atoms, at least 5 mol% of all
- t is a number of 0 to 0.4
- q / p is a number of 0 to 10
- r / p is a number of 0 to 5.
- ⁇ It is preferable that it is the branched organopolysiloxane represented by these.
- composition may further contain (D) a hydrosilylation reaction inhibitor in an amount of 0.0001 to 5 parts by mass with respect to 100 parts by mass in total of the components (A) to (C).
- the optical semiconductor device of the present invention is characterized in that the optical semiconductor element is coated with a cured product of the above-mentioned curable silicone composition.
- the curable silicone composition of the present invention is characterized in that it can form an optical semiconductor device having a high light extraction efficiency from the light emitting element and a small change rate. Further, the optical semiconductor device of the present invention is characterized in that the light extraction efficiency is good and the change rate over time is small.
- Component (A) is an average composition formula: R 11 a SiO (4-a) / 2 Organopolysiloxane represented by
- R 11 is an unsubstituted or halogen-substituted monovalent hydrocarbon group, an alkoxy group, or a hydroxyl group, and as the monovalent hydrocarbon group of R 11 , specifically, a methyl group, an ethyl group, a propyl group, Alkyl groups such as butyl, pentyl, hexyl and heptyl; alkenyls such as vinyl, allyl, butenyl, pentenyl and hexenyl; and aryls such as phenyl, tolyl, xylyl and naphthyl And aralkyl groups such as benzyl group and phenethyl group; and halogen substituted alkyl groups such as 3-chloropropyl group and 3,3,3-trifluoropropyl group.
- At least two of R 11 are an alkenyl group.
- this alkenyl group a vinyl group is preferable.
- at least 5 mol%, preferably at least 10 mol%, at least 15 mol%, or at least 15 mol% of all R 11 in one molecule, because attenuation of light of the cured product to be obtained is small due to refraction, reflection, scattering, etc. 20 mol% is an aryl group.
- a phenyl group is preferable.
- a part of R 11 may be an alkoxy group or a hydroxyl group as long as the object of the present invention is not impaired. Specific examples of the alkoxy group of R 11 include a methoxy group, an ethoxy group and a propoxy group.
- a is a number within the range of 0.6 to 2.2, preferably a number within the range of 0.8 to 2.2, or a number within the range of 1.0 to 2.2 is there. This is because the handling workability of the present composition is improved when a is at least the lower limit of the above range, while a cured product obtained by curing the present composition as the upper limit of the above range is at the same or lower The mechanical properties of are improved.
- the molecular structure of the component (A) is not limited, and examples thereof include linear, partially branched linear, branched, cyclic, and two types of linear and branched structures.
- Component (A) may be one organopolysiloxane having such a molecular structure, or a mixture of two or more organopolysiloxanes.
- (A) component a general formula: R 12 3 SiO (R 12 2 SiO) m SiR 12 3
- the branched organopolysiloxane represented by is preferred.
- R 12 is independently a non-substituted or halogen-substituted monovalent hydrocarbon group, the same groups as the R 11 can be exemplified.
- at least two of R 12 are alkenyl groups.
- this alkenyl group a vinyl group is preferable.
- at least 5 mole%, preferably at least 10 mole%, at least 15 mole%, or at least 15 mole% of all R 12 in one molecule, because the attenuation of light of the resulting cured product is small due to refraction, reflection, scattering, etc. 20 mol% is an aryl group.
- a phenyl group is preferable.
- Y is an alkoxy group or a hydroxyl group.
- Specific examples of the alkoxy group of Y include a methoxy group, an ethoxy group and a propoxy group.
- m is an integer within the range of 5 to 1,000, preferably an integer within the range of 5 to 500, an integer within the range of 10 to 500, an integer within the range of 5 to 300, or 10 It is an integer in the range of ⁇ 300. This is because the flexibility of a cured product obtained by curing the present composition is improved when m is not less than the lower limit of the above range, while the present composition is not more than the upper limit of the above range. It is because the handling workability of is improved.
- g to k are respectively a total of g to j, 1, g is a positive number, h is 0 or a positive number, i is 0 or a positive number, j is 0 to 0 , H / g is a number in the range of 0 to 10, i / g is a number in the range of 0 to 5, and preferably g is A number in the range of 0.1 to 0.9, h is a number in the range of 0 to 0.6, and i is a number in the range of 0 to 0.8.
- Component (B) is an organopolysiloxane having at least two silicon-bonded hydrogen atoms in one molecule.
- Examples of the group to be bonded to a silicon atom other than a hydrogen atom in the component (B) include unsubstituted or halogen-substituted monovalent hydrocarbon groups having no aliphatic unsaturated bond, and specifically, methyl group Alkyl groups such as ethyl, propyl, butyl, pentyl, hexyl and heptyl; aryl groups such as phenyl, tolyl, xylyl and naphthyl; aralkyl such as benzyl and phenethyl; 3 Examples thereof include halogenated alkyl groups such as -chloropropyl group and 3,3,3-trifluoropropyl group.
- an alkoxy group or a hydroxyl group may be bonded to the silicon atom in the molecule within the range not impairing the object of the present invention. Specifically as this alkoxy group, a methoxy group, an ethoxy group, and a propoxy group are illustrated.
- the molecular structure of the component (B) is not limited, and examples thereof include linear, partially branched linear, branched, cyclic, and two types of linear and branched structures.
- the component (B) may be one organopolysiloxane having such a molecular structure, or a mixture of two or more organopolysiloxanes.
- (B) component a general formula: R 31 3 SiO (R 31 2 SiO) n SiR 31 3
- the branched organopolysiloxane represented by is preferred.
- R 31 is independently an unsubstituted or halogen-substituted monovalent hydrocarbon group having no aliphatic unsaturated bond, or a hydrogen atom.
- the monovalent hydrocarbon group for R 31 include alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl and heptyl; phenyl, tolyl, xylyl and naphthyl And aryl groups such as groups; aralkyl groups such as benzyl and phenethyl groups; and halogenated alkyl groups such as 3-chloropropyl and 3,3,3-trifluoropropyl.
- At least two of R 31 are hydrogen atoms.
- at least 5 mol%, preferably at least 10 mol%, at least 15 mol of all R 31 excluding hydrogen atoms in one molecule, because the attenuation of light of the cured product obtained is small due to refraction, reflection, scattering, etc. %, Or at least 20 mole% is an aryl group.
- this aryl group a phenyl group is preferable.
- Z is an alkoxy group or a hydroxyl group.
- Specific examples of the alkoxy group of Z include a methoxy group, an ethoxy group and a propoxy group.
- n is an integer within the range of 1 to 1,000, preferably an integer within the range of 1 to 500, an integer within the range of 1 to 300, an integer within the range of 1 to 100, or 1 It is an integer in the range of ⁇ 50. This is because the composition of the present composition is stabilized when n is at least the lower limit of the above range, while the handling workability of the present composition is improved when it is at the upper limit of the above range. .
- p to t are, when the sum of p to s is 1, respectively, p is a positive number, q is 0 or a positive number, r is 0 or a positive number, and s is 0 to 0 , T is a number in the range of 0 to 0.4, and q / p is a number in the range of 0 to 10, r / p is a number in the range of 0 to 5, and preferably p is A number in the range of 0.1 to 0.6, r is a number in the range of 0.3 to 0.9. This is because when p to t is in the above range, the mechanical strength of the obtained cured product is improved.
- the content of the component (B) is such that the silicon-bonded hydrogen atoms in this component are in the range of 0.1 to 5 mol, preferably 0, per 1 mol of the alkenyl group in the component (A). And an amount in the range of 5 to 5 moles, an amount in the range of 0.5 to 3 moles, or an amount in the range of 0.5 to 2 moles. This is because if the content of the component (B) is less than the lower limit of the above range, the resulting composition tends to be not sufficiently cured, while if it exceeds the upper limit of the above range, the resulting cure is obtained It is because the heat resistance of a thing tends to fall.
- Component (C) is an average unit formula: (R 21 SiO 3/2 ) b (R 22 SiO 3/2 ) c (R 23 2 SiO 2/2 ) d (R 23 3 SiO) 1/2 ) e (XO 1/2 ) f
- Organopolysiloxane represented by
- R 21 is an aryl group, and examples thereof include a phenyl group, a tolyl group, a xylyl group and a naphthyl group, preferably a phenyl group.
- R 22 is an alkenyl group, and a vinyl group, an allyl group, a butenyl group, a pentenyl group and a hexenyl group are exemplified, and preferably a vinyl group.
- R 23 is independently an alkyl group, an alkenyl group, an aryl group or an epoxy-containing organic group.
- alkyl group of R 23 specifically, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, heptyl group and the like, preferably a methyl group.
- the aryl group of R 23 specifically, a phenyl group, a tolyl group, a xylyl group, a naphthyl group and the like, preferably phenyl group.
- Specific examples of the epoxy-containing organic group of R 23 include 3-glycidoxypropyl group, 3,4-epoxycyclohexylethyl group, 3,4-epoxybutyl group and 5,6-epoxyhexyl group. Preferably, it is a 3-glycidoxypropyl group.
- At least 5 mol%, preferably at least 8 mol%, of the total of R 21 , R 22 and R 23 in one molecule is an alkenyl group. This is because the mechanical strength of the obtained cured product can be improved when the content of the alkenyl group is at least the above lower limit.
- At least 15 mol%, preferably at least 25 mol%, of the total of R 21 , R 22 and R 23 in one molecule is an aryl group. This is because when the content of the aryl group is at least the above lower limit, the compatibility with other components is improved, and the refractive index of the obtained cured product is increased.
- the total of R 21, R 22 and R 23 in one molecule, at least 10 mol%, preferably at least 20 mol% is an epoxy-containing organic group. This is because the adhesiveness with respect to base materials, such as case resin, improves that content of an epoxy containing organic group is more than the said minimum.
- X is an alkoxy group or a hydroxyl group.
- Specific examples of the alkoxy group of X include a methoxy group, an ethoxy group and a propoxy group.
- b to f are respectively a total of b to e being 1, b is a positive number, c is a positive number, d is 0 or a positive number, and e is 0 or a positive number , F is a number of 0 to 0.02, c / b is a number of 0.1 to 5, and c + b is a number of 0.2 to 0.8.
- the viscosity at 25 ° C. of the component (C) is not limited, it is preferably in the range of 100 to 50,000 mPa ⁇ s, or in the range of 1,000 to 20,000 mPa ⁇ s. This is because when the viscosity at 25 ° C. of the component (C) is within the above range, the adhesion of the present composition to a substrate such as a case resin is improved.
- the content of the component (C) is in the range of 0.1 to 20 parts by mass, preferably 0.1 to 10 parts by mass with respect to 100 parts by mass in total of the components (A) and (B). Or within the range of 0.2 to 10 parts by mass. This is because when the content of the component (C) is at least the lower limit of the above range, the light extraction efficiency of the obtained optical semiconductor device is good and the change rate can be reduced, while the above range It is because discoloration of the hardened
- Component (D) is a catalyst for hydrosilylation reaction to accelerate the curing of the composition.
- component (D) include a platinum-based catalyst, a rhodium-based catalyst and a palladium-based catalyst, and a platinum-based catalyst is preferable because it can significantly accelerate the curing of the present composition.
- platinum-based catalyst include fine platinum powder, chloroplatinic acid, alcohol solution of chloroplatinic acid, platinum-alkenyl siloxane complex, platinum-olefin complex, platinum-carbonyl complex, and in particular, platinum-alkenyl siloxane complex Is preferred.
- alkenyl siloxane 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane, The alkenyl siloxane which substituted a part of methyl group of these alkenyl siloxanes by the ethyl group, the phenyl group, etc., and the alkenyl siloxane which substituted the vinyl group of these alkenyl siloxanes with the allyl group, the hexenyl group etc. is illustrated.
- 1,3-divinyl-1,1,3,3-teramethyldisiloxane is preferable because the stability of the platinum-alkenylsiloxane complex is good.
- 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, 1,3-diallyl-1,1 may be used as this complex.
- an alkenyl siloxane such as 3,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane or an organosiloxane oligomer such as a dimethylsiloxane oligomer, and particularly to add an alkenyl siloxane. Is preferred.
- the content of the component (D) is an amount to accelerate the curing of the composition, and specifically, the content of metal atoms in the component is 0.01 to 500 ppm by mass with respect to the composition. Preferably, the amount is in the range of 0.01 to 100 ppm, or in the range of 0.01 to 50 ppm. This is because when the content of the component (D) is less than the lower limit of the above range, the present composition tends not to be sufficiently cured, while when it exceeds the upper limit of the above range, the obtained cured product The problem of coloring etc. may occur.
- the present composition may contain (E) a hydrosilylation reaction inhibitor to improve its handling workability.
- a hydrosilylation reaction inhibitor to improve its handling workability.
- alkynes such as 2-methyl-3-butyn-2-ol, 3,5-dimethyl-1-hexyn-3-ol and 2-phenyl-3-butyn-2-ol.
- Enyne compounds such as 3-methyl-3-penten-1-yne and 3,5-dimethyl-3-hexene-1-yne; 1,3,5,7-tetramethyl-1,3,5,7 -Tetravinylcyclotetrasiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetrahexenylcyclotetrasiloxane, benzotriazole are exemplified.
- the content of the component (E) is not limited, it is preferably in the range of 0.0001 to 5 parts by mass, preferably 0.0001 to 2 parts by mass with respect to a total of 100 parts by mass of the components (A) to (C).
- the pot life of the present composition is improved and the workability is improved when the content of the component (E) is not less than the lower limit of the above range, while it is not more than the upper limit of the above range This is because the curability of the present composition is improved.
- the present composition can be used as a lens material or the like because it forms a transparent cured product, but the wavelength of light emitted from a light emitting device formed by sealing or coating with the cured product of the present composition
- the phosphors may be incorporated into the present composition to convert light of the desired wavelength.
- oxide-based phosphors, oxynitride-based phosphors, nitride-based phosphors, sulfide-based phosphors, oxysulfide-based phosphors, which are widely used for light-emitting diodes (LEDs) Examples are yellow, red, green and blue light emitting phosphors composed of body and the like.
- oxide-based phosphors As oxide-based phosphors, yttrium, aluminum, garnet-based YAG-based green to yellow light-emitting phosphors including cerium ions, terbium, aluminum, garnet-based TAG-based yellow light-emitting phosphors including cerium ions, Examples are silicate based green to yellow light emitting phosphors including cerium and europium ions. Examples of oxynitride phosphors include silicon including europium ions, aluminum, oxygen, and nitrogen-based sialon red to green light emitting phosphors.
- nitride-based phosphors examples include calcium, strontium, aluminum, silicon, and cathode-based red light-emitting phosphors based on nitrogen, including europium ions.
- a sulfide type fluorescent substance ZnS type green color development fluorescent substance containing a copper ion and an aluminum ion is illustrated.
- the oxysulfide phosphor include europium ion Y 2 O 2 S based red phosphors may be exemplified. These phosphors may be used alone or in combination of two or more.
- the content of the phosphor is not limited, but in order to sufficiently convert the wavelength of light emitted from the light emitting element, 100 parts by mass of a total of the components (A) to (D) is used. Preferably within a range of 0 to 250 parts by mass, within a range of 1 to 100 parts by mass, within a range of 1 to 50 parts by mass, or within a range of 1 to 30 parts by mass.
- inorganic fillers such as silica, glass, alumina, zinc oxide and the like as other optional components; fine particles of organic resin such as polymethacrylate resin; It may contain dyes, pigments, flame retardants, solvents and the like.
- the viscosity at 25 ° C. of the present composition is not limited, but is preferably in the range of 100 to 1,000,000 mPa ⁇ s, or in the range of 500 to 50,000 mPa ⁇ s. This is because when the viscosity is less than the lower limit of the above range, the mechanical strength of the obtained cured product tends to decrease, and when the upper limit of the above range is exceeded, the handling workability of the composition obtained is Because it tends to decrease.
- composition proceeds curing at room temperature or heating, heating is preferred for rapid curing.
- the heating temperature is preferably in the range of 50 to 200 ° C.
- the optical semiconductor device of the present invention is characterized in that the optical semiconductor element is sealed with the cured product of the above-mentioned curable silicone composition.
- a light emitting diode (LED), a photocoupler, and a CCD are exemplified.
- the optical semiconductor element a light emitting diode (LED) chip and a solid-state imaging element are exemplified.
- FIG. 1 A cross-sectional view of a single surface mount LED as an example of the optical semiconductor device of the present invention is shown in FIG.
- a light emitting element (LED chip) 1 is die-bonded on a lead frame 2, and the light emitting element (LED chip) 1 and a lead frame 3 are wire-bonded by bonding wires 4.
- a frame 5 is provided around the light emitting element (LED chip) 1, and the light emitting element (LED chip) 1 inside the frame 5 is made of the cured product 6 of the curable silicone composition of the present invention It is sealed.
- the light emitting element (LED chip) 1 is die-bonded to the lead frame 2, and the light emitting element (LED chip) 1 and the lead frame 3 are bonded by gold bonding wire.
- wire bonding with 4 and then filling the curable silicone composition of the present invention inside the frame material 5 provided around the light emitting element (LED chip) 1 curing is carried out by heating at 50 to 200 ° C. The method of making it be illustrated.
- the curable silicone composition and the optical semiconductor device of the present invention will be described in detail by examples and comparative examples.
- the viscosity is a value at 25 ° C.
- the following components were used to prepare curable silicone compositions of Examples and Comparative Examples.
- Me, Ph, Vi and Ep each represent a methyl group, a phenyl group, a vinyl group and a 3-glycidoxypropyl group.
- (A1): average formula: ViMe 2 SiO (MePhSiO) 23 SiMe 2 Vi Is represented by the average composition formula: Me 1.08 Ph 0.92 Vi 0.08 SiO 0.96 Of methylvinylpolysiloxane blocked with dimethylvinylsiloxy group at both ends of molecular chain (content of phenyl group 44.2 mol%)
- (A2): average formula: ViMe 2 SiO (Me 2 SiO) 200 (Ph 2 SiO) 50 SiMe 2 Vi Is represented by the average composition formula: Me 1.60 Ph 0.40 Vi 0.01 SiO 1.00 Of both-terminal dimethylvinylsiloxy group-capped dimethyldiphenylpolysiloxane (content of phenyl group 19.8 mol%)
- component (B2): having at least two silicon-bonded hydrogen atoms in one molecule, an average unit formula: (HMe 2 SiO 1/2 ) 0.60 (PhSiO 3/2 ) 0.40 Organopolysiloxane (phenyl group content 25.0 mol%)
- the properties of the curable silicone composition were measured as follows.
- the refractive index of the curable silicone composition was measured at 25 ° C. using an Abbe refractometer. In addition, visible light (589 nm) was used as a light source.
- the characteristic of the surface mounting type light emitting diode (LED) produced using curable silicone composition was measured as follows.
- Curable Silicone Composition of Example 1-5 and Comparative Examples 1 and 2 In 5 g of each, 1.035 g of green phosphor (product name: GAL530 manufactured by INTEMATIX), red phosphor (product name manufactured by INTEMATIX: ER6535) 0 .082g was added and mixed uniformly to prepare seven curable silicone compositions. These curable silicone compositions were injected into an optical semiconductor device as shown in FIG. 1 and cured at 150 ° C. for 2 hours to produce an optical semiconductor device. The light extraction efficiency of these optical semiconductor devices was measured using a total radiant flux measurement apparatus using an integrating sphere.
- the light extraction efficiency of each optical semiconductor device was measured in the same manner as described above. From the light extraction efficiency, the rate of change (retention ratio%) with respect to the initial light extraction efficiency was determined.
- Example 1-6 Comparative Examples 1 and 2
- a curable silicone composition was prepared with the composition shown in Table 1.
- SiH / Vi represents a value of the total number of moles of silicon-bonded hydrogen atoms in the component (B) to 1 mole in total of vinyl groups in the component (A).
- the properties of this curable silicone composition and the properties of the optical semiconductor device manufactured using this composition are shown in Table 1.
- the component (c4) used in Comparative Examples 1 and 2 in the table does not have a siloxane unit represented by the formula: ViSiO 3/2 , and is outside the scope of the present invention.
- the curable silicone composition of the present invention is excellent in the initial light extraction efficiency and has a small change with time of the light extraction efficiency.
- the curable silicone composition of the present invention can form an optical semiconductor device having a good light extraction efficiency from the light emitting element and a small change rate thereof, the sealing of the light emitting element in the optical semiconductor device such as a light emitting diode (LED) It is suitable as an agent or a coating agent.
- the curable silicone composition of the present invention is also suitable as an optical member requiring transparency, since it retains good transparency.
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Abstract
Description
(A)平均組成式:
R11 aSiO(4-a)/2
(式中、R11は非置換又はハロゲン置換の一価炭化水素基、アルコキシ基、もしくは水酸基、ただし、一分子中、少なくとも2個のR11はアルケニル基であり、全R11の少なくとも5モル%はアリール基であり、aは0.6~2.2の数である。)
で表されるオルガノポリシロキサン、
(B)一分子中に少なくとも2個のケイ素原子結合水素原子を有し、水素原子以外のケイ素原子結合基の少なくとも5モル%がアリール基であるオルガノポリシロキサン{(A)成分中のアルケニル基1モルに対して、本成分中のケイ素原子結合水素原子が0.1~5モルとなる量}、
(C)平均単位式:
(R21SiO3/2)b(R22SiO3/2)c(R23 2SiO2/2)d(R23 3SiO1/2)e(XO1/2)f{式中、R21はアリール基、R22はアルケニル基、R23は独立して、アルキル基、アルケニル基、アリール基、又はエポキシ含有有機基、ただし、一分子中のR21、R22及びR23の合計に対して、少なくとも5モル%がアルケニル基であり、少なくとも15モル%がアリール基であり、少なくとも10モル%がエポキシ含有有機基であり、Xは水素原子又はアルキル基であり、b~fは、それぞれ、b~eの合計を1としたとき、bは正の数、cは正の数、dは0又は正の数、eは0又は正の数、fは0~0.02の数、かつ、c/bは0.1~5の数、b+cは0.2~0.8の数である。}
で表されるオルガノポリシロキサン{(A)成分と(B)成分の合計100質量部に対して0.1~20質量部}、及び
(D)本組成物の硬化を促進する量のヒドロシリル化反応用触媒から少なくともなることを特徴とする。
R12 3SiO(R12 2SiO)mSiR12 3
(式中、R12は独立して、非置換又はハロゲン置換の一価炭化水素基、ただし、一分子中、少なくとも2個のR12はアルケニル基であり、全R12の少なくとも5モル%がアリール基であり、mは5~1,000の整数である。)
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R12SiO3/2)g(R12 2SiO2/2)h(R12 3SiO1/2)i(SiO4/2)j(YO1/2)k{式中、R12は前記と同じ、ただし、一分子中、少なくとも2個のR12はアルケニル基であり、全R12の少なくとも5モル%がアリール基であり、Yは水素原子又はアルキル基であり、g~kは、それぞれ、g~jの合計を1としたとき、gは正の数、hは0又は正の数、iは0又は正の数、jは0~0.3の数、kは0~0.4の数、かつ、h/gは0~10の数、i/gは0~5の数である。}
で表される分岐鎖状のオルガノポリシロキサンであることが好ましい。
R31 3SiO(R31 2SiO)nSiR31 3
(式中、R31は独立して、脂肪族不飽和結合を有さない非置換もしくはハロゲン置換の一価炭化水素基、又は水素原子、ただし、一分子中、少なくとも2個のR31は水素原子であり、水素原子を除く全R31の少なくとも5モル%がアリール基であり、nは1~1,000の整数である。)
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R31SiO3/2)p(R31 2SiO2/2)q(R31 3SiO1/2)r(SiO4/2)s(ZO1/2)t{式中、R31は前記と同じ、ただし、一分子中、少なくとも2個のR31は水素原子であり、水素原子を除く全R31の少なくとも5モル%がアリール基であり、Zは水素原子又はアルキル基であり、p~tは、それぞれ、p~sの合計を1としたとき、pは正の数、qは0又は正の数、rは0又は正の数、sは0~0.3の数、tは0~0.4の数、かつ、q/pは0~10の数、r/pは0~5の数である。}
で表される分岐鎖状のオルガノポリシロキサンであることが好ましい。
(A)成分は、平均組成式:
R11 aSiO(4-a)/2
で表されるオルガノポリシロキサンである。
R12 3SiO(R12 2SiO)mSiR12 3
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R12SiO3/2)g(R12 2SiO2/2)h(R12 3SiO1/2)i(SiO4/2)
j(YO1/2)k
で表される分岐鎖状のオルガノポリシロキサンが好ましい。
R31 3SiO(R31 2SiO)nSiR31 3
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R31SiO3/2)p(R31 2SiO2/2)q(R31 3SiO1/2)r(SiO4/2)s(ZO1/2)t
で表される分岐鎖状のオルガノポリシロキサンが好ましい。
(R21SiO3/2)b(R22SiO3/2)c(R23 2SiO2/2)d(R23 3SiO
1/2)e(XO1/2)f
で表されるオルガノポリシロキサンである。
本発明の光半導体装置は、上記の硬化性シリコーン組成物の硬化物により光半導体素子を封止してなることを特徴とする。このような本発明の光半導体装置としては、発光ダイオード(LED)、フォトカプラー、CCDが例示される。また、光半導体素子としては、発光ダイオード(LED)チップ、固体撮像素子が例示される。
(a1):平均式:
ViMe2SiO(MePhSiO)23SiMe2Vi
で表され、平均組成式:
Me1.08Ph0.92Vi0.08SiO0.96
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖メチルフェニルポリシロキサン(フェニル基の含有量=44.2モル%)
(a2):平均式:
ViMe2SiO(Me2SiO)200(Ph2SiO)50SiMe2Vi
で表され、平均組成式:
Me1.60Ph0.40Vi0.01SiO1.00
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルジフェニルポリシロキサン(フェニル基の含有量=19.8モル%)
(a3):平均式:
ViPh2SiO(Me2SiO)11.3SiPh2Vi
で表され、平均組成式:
Me1.70Ph0.30Vi0.15SiO0.93
で表される分子鎖両末端ジフェニルビニルシロキシ基封鎖ジメチルポリシロキサン(フェニル基の含有量=14.0モル%)
(a4):一分子中に少なくとも2個のビニル基を有し、平均単位式:
(Me2ViSiO1/2)0.25(PhSiO3/2)0.75
で表され、平均組成式:
Me0.50Ph0.75Vi0.25SiO1.25
で表されるオルガノポリシロキサン(フェニル基の含有量=50.0モル%)
(a5):一分子中に少なくとも2個のビニル基を有し、平均単位式:
(Me2ViSiO1/2)0.11(Me3SiO1/2)0.14(MeSiO3/2)0.53(PhSiO3/2)0.22
で表され、平均組成式:
Me1.17Ph0.22Vi0.11SiO1.25
で表されるオルガノポリシロキサン(フェニル基の含有量=14.7モル%)
(a6):一分子中に少なくとも2個のビニル基を有し、平均単位式:
(Me2ViSiO1/2)0.20(PhSiO3/2)0.80
で表され、平均組成式:
Me0.40Ph0.80Vi0.20SiO1.30
で表されるオルガノポリシロキサン(フェニル基の含有量=57.1モル%)
(b1):式:
HMe2SiO(Ph2SiO)SiMe2H
で表されるオルガノトリシロキサン(フェニル基の含有量=33.3モル%)
(b2):一分子中に少なくとも2個のケイ素原子結合水素原子を有し、平均単位式:
(HMe2SiO1/2)0.60(PhSiO3/2)0.40
で表されるオルガノポリシロキサン(フェニル基の含有量=25.0モル%)
(c1):粘度が4,800mPa・sであり、平均単位式:
(ViSiO3/2)0.21(PhSiO3/2)0.31(EpMeSiO2/2)0.48
で表されるオルガノポリシロキサン(ビニル基の含有量=14.2モル%、フェニル基の含有量=21.0モル%、3-グリシドキシプロピル基の含有量=32.4モル%)
(c2):粘度が6,000mPa・sであり、平均単位式:
(ViSiO3/2)0.24(PhSiO3/2)0.27(EpMeSiO2/2)0.49
で表されるオルガノポリシロキサン(ビニル基の含有量=16.1モル%、フェニル基の含有量=18.1モル%、3-グリシドキシプロピル基の含有量=32.9モル%)
(c3):粘度が7,000mPa・sであり、平均単位式:
(ViSiO3/2)0.15(PhSiO3/2)0.31(EpMeSiO2/2)0.54
で表されるオルガノポリシロキサン(ビニル基の含有量=9.7モル%、フェニル基の含有量=20.1モル%、3-グリシドキシプロピル基の含有量=35.1モル%)
(c4):粘度が19,000mPa・sであり、平均単位式:
(PhSiO3/2)0.53(EpMeSiO2/2)0.29(Me2ViSiO1/2)0.1
8
で表されるオルガノポリシロキサン(ビニル基の含有量=10.9モル%、フェニル基の含有量=32.1モル%、3-グリシドキシプロピル基の含有量=17.6モル%)
(d):白金金属の含有量が約4質量%である、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の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液
(e1):1-エチニルシクロヘキサン-1-オール
(e2):平均式:
(MeViSiO)4
で表される環状メチルビニルポリシロキサン
硬化性シリコーン組成物の屈折率を、アッベ式屈折率計を用いて25℃で測定した。なお、光源として、可視光(589nm)を用いた。
硬化性シリコーン組成物の調製直後の25℃における粘度(mPa・s)を回転粘度計(トキメック株式会社製のE型粘度計VISCONIC EMD)を使用して測定した。
また、25℃において、その粘度が5万mPa・sに達するまでの時間を測定した。
実施例1-5及び比較例1、2の硬化性シリコーン組成物 各5gに、緑蛍光体(INTEMATIX製の製品名:GAL530) 1.035g、赤色蛍光体(INTEMATIX製の製品名:ER6535) 0.082g加えて均一に混合して、7種の硬化性シリコーン組成物を調製した。これらの硬化性シリコーン組成物を、図1に示すような光半導体装置に注入し、150℃で2時間硬化させて光半導体装置を作製した。これらの光半導体装置の光取り出し効率を、積分球を用いた全放射束測定装置を使用して放射束測定を行った。
表1に示した組成で硬化性シリコーン組成物を調製した。なお、表1中の「SiH/Vi」は、(A)成分中のビニル基の合計1モルに対する、(B)成分中のケイ素原子結合水素原子の合計モル数の値を表す。また、この硬化性シリコーン組成物の特性およびこの組成物を用いて作製した光半導体装置の特性を表1に示した。
2 リードフレーム
3 リードフレーム
4 ボンディングワイヤ
5 枠材
6 硬化性シリコーン組成物の硬化物
Claims (5)
- (A)平均組成式:
R11 aSiO(4-a)/2
(式中、R11は非置換又はハロゲン置換の一価炭化水素基、アルコキシ基、もしくは水酸基、ただし、一分子中、少なくとも2個のR11はアルケニル基であり、全R11の少なくとも5モル%がアリール基であり、aは0.6~2.2の数である。)
で表されるオルガノポリシロキサン、
(B)一分子中、少なくとも2個のケイ素原子結合水素原子を有し、水素原子以外のケイ素原子結合基の少なくとも5モル%がアリール基であるオルガノポリシロキサン{(A)成分中のアルケニル基1モルに対して、本成分中のケイ素原子結合水素原子が0.1~5モルとなる量}、
(C)平均単位式:
(R21SiO3/2)b(R22SiO3/2)c(R23 2SiO2/2)d(R23 3SiO1/2)e(XO1/2)f{式中、R21はアリール基、R22はアルケニル基、R23は独立して、アルキル基、アルケニル基、アリール基、又はエポキシ含有有機基、ただし、一分子中のR21、R22及びR23の合計に対して、少なくとも5モル%がアルケニル基であり、少なくとも15モル%がアリール基であり、少なくとも10モル%がエポキシ含有有機基であり、Xは水素原子又はアルキル基であり、b~fは、それぞれ、b~eの合計を1としたとき、bは正の数、cは正の数、dは0又は正の数、eは0又は正の数、fは0~0.02の数、かつ、c/bは0.1~5の数、b+cは0.2~0.8の数である。}
で表されるオルガノポリシロキサン{(A)成分と(B)成分の合計100質量部に対して0.1~20質量部}、及び
(D)本組成物の硬化を促進する量のヒドロシリル化反応用触媒
を少なくとも含んでなる硬化性シリコーン組成物。 - (A)成分が、一般式:
R12 3SiO(R12 2SiO)mSiR12 3
(式中、R12は独立して、非置換又はハロゲン置換の一価炭化水素基、ただし、一分子中、少なくとも2個のR12はアルケニル基であり、全R12の少なくとも5モル%がアリール基であり、mは5~1,000の整数である。)
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R12SiO3/2)g(R12 2SiO2/2)h(R12 3SiO1/2)i(SiO4/2)j(YO1/2)k{式中、R12は前記と同じ、ただし、一分子中、少なくとも2個のR12はアルケニル基であり、全R12の少なくとも5モル%がアリール基であり、Yは水素原子又はアルキル基であり、g~kは、それぞれ、g~jの合計を1としたとき、gは正の数、hは0又は正の数、iは0又は正の数、jは0~0.3の数、kは0~0.4の数、かつ、h/gは0~10の数、i/gは0~5の数である。}
で表される分岐鎖状のオルガノポリシロキサンである、請求項1に記載の硬化性シリコーン組成物。 - (B)成分が、一般式:
R31 3SiO(R31 2SiO)nSiR31 3
(式中、R31は独立して、脂肪族不飽和結合を有さない非置換もしくはハロゲン置換の一価炭化水素基、又は水素原子、ただし、一分子中、少なくとも2個のR31は水素原子であり、水素原子以外の全R31の少なくとも5モル%がアリール基であり、nは1~1,000の整数である。)
で表される直鎖状のオルガノポリシロキサン及び/又は平均単位式:
(R31SiO3/2)p(R31 2SiO2/2)q(R31 3SiO1/2)r(SiO4/2)s(ZO1/2)t{式中、R31は前記と同じ、ただし、一分子中、少なくとも2個のR31は水素原子であり、水素原子以外の全R31の少なくとも5モル%がアリール基であり、Zは水素原子又はアルキル基であり、p~tは、それぞれ、p~sの合計を1としたとき、pは正の数、qは0又は正の数、rは0又は正の数、sは0~0.3の数、tは0~0.4の数、かつ、q/pは0~10の数、r/pは0~5の数である。}
で表される分岐鎖状のオルガノポリシロキサンである、請求項1に記載の硬化性シリコーン組成物。 - さらに、(D)ヒドロシリル化反応抑制剤を、(A)成分~(C)成分の合計100質量部に対して0.0001~5質量部含有する、請求項1乃至3のいずれか1項に記載の硬化性シリコーン組成物。
- 請求項1乃至4のいずれか1項に記載の硬化性シリコーン組成物の硬化物により被覆されている光半導体素子を含んでなる光半導体装置。
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CN111225956A (zh) | 2020-06-02 |
JPWO2019078046A1 (ja) | 2021-03-04 |
EP3699237A1 (en) | 2020-08-26 |
JP7222569B2 (ja) | 2023-02-15 |
JP2022158926A (ja) | 2022-10-17 |
KR20200059251A (ko) | 2020-05-28 |
US20200299510A1 (en) | 2020-09-24 |
EP3699237A4 (en) | 2021-07-14 |
TW201917173A (zh) | 2019-05-01 |
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