JP2009249392A - Epoxy resin molding material for sealing and electronic parts device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoxy resin molding material for sealing which is free from degradation in moldability such as fluidity and curability, and colorability, and avoids short circuit trouble due to a conductive material even when used for a package in which the distance between pads or between wires is narrow, and to provide an electronic parts device equipped with an element sealed with the molding material. <P>SOLUTION: The epoxy resin molding material for sealing comprises an epoxy resin, a curing agent and melanin, wherein the melanin may be eumelanin. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is excellent in fluidity, curability and colorability suitable as a sealing material for an electronic component device, and is particularly short-circuited by a conductive substance even in an electronic component device such as a semiconductor device having a short distance between pads or wires. The present invention relates to an epoxy resin molding material for sealing that does not cause defects, and an electronic component device including an element sealed with the epoxy resin molding material for sealing.

  Conventionally, in the field of element sealing of electronic component devices such as transistors and ICs, resin sealing has been the mainstream in terms of productivity and cost, and epoxy resin molding materials have been widely used. This is because epoxy resins are balanced in various properties such as electrical properties, moisture resistance, heat resistance, mechanical properties, and adhesiveness with inserts.

  In recent years, along with the high density mounting of electronic component devices on printed wiring boards, electronic component devices are mainly used in surface mount type packages rather than conventional pin insertion type packages. Surface-mount ICs, LSIs, etc. are thin and small packages in order to increase the mounting density and reduce the mounting height, and the volume occupied by the device package increases, resulting in a very thick package. It has become thinner.

  In addition, in order to cope with further reduction in size and weight, CSP (Quad Flat Package), SOP (Small Outline Package), and other forms of packages are easy to cope with higher pin count and CSP capable of higher density mounting. It is shifting to an area mounting package such as BGA (Ball Grid Array) including (Chip Size Package). In recent years, these packages have been developed with new structures such as face-down type, stacked type, flip chip type, and wafer level type in order to realize high speed and multiple functions. Many have a single-side sealed package form in which only one side on the element mounting surface side is sealed with a sealing material such as an epoxy resin molding material, and then solder balls are formed on the back surface to join the circuit board. ing.

  As such packages become smaller and more pins are used, the distances between pitches such as between inner leads, between pads, and between wires are acceleratingly narrowing. For this reason, since carbon black that has been used in the past is electrically conductive, there has been a problem that the aggregates enter between the inner leads, between the pads, and between the wires, resulting in poor electrical characteristics. For this reason, methods using organic dyes, organic pigments, and inorganic pigments instead of carbon black (for example, see Patent Documents 1 to 4) have been studied. However, fluidity, coloring, and curability are reduced. However, it has not reached a satisfactory level.

JP 60-119760 A Japanese Unexamined Patent Publication No. 63-179921 Japanese Patent Laid-Open No. 11-60904 JP 2003-160713 A

  The present invention has been made in view of such a situation, and even when used for a package having a short distance between pads or wires without reducing moldability and colorability such as fluidity and curability, a short circuit failure due to a conductive material. It is an object of the present invention to provide an epoxy resin molding material for sealing that does not generate a problem, and an electronic component device including an element sealed thereby.

As a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by a sealing epoxy resin molding material containing melanin, and the present invention has been completed. It was.
The present invention relates to the following.
(1) An epoxy resin molding material for sealing containing an epoxy resin, a curing agent, and melanin.
(2) The sealing epoxy resin molding material according to (1), wherein the melanin is eumelanin.
(3) The epoxy resin molding material for sealing according to (1), wherein melanin is a pigment component of squid ink.
(4) The epoxy for sealing according to any one of (1) to (3), wherein the ratio of melanin is 0.1 to 1.5% by mass with respect to the total amount of the epoxy resin molding material for sealing. Resin molding material.
(5) The epoxy resin is a biphenyl type epoxy resin, a thiodiphenol type epoxy resin, a novolac type epoxy resin, a naphthalene type epoxy resin, a triphenylmethane type epoxy resin, a bisphenol F type epoxy resin, a phenol / aralkyl type epoxy resin, or a naphthol. -The epoxy resin molding material for sealing in any one of (1)-(4) containing at least 1 sort (s) in any one of an aralkyl type epoxy resin.
(6) The curing agent contains at least one of a phenol / aralkyl resin, a naphthol / aralkyl resin, a triphenylmethane type phenol resin, a novolac type phenol resin, and a copolymer type phenol / aralkyl resin (1) to ( 5) The epoxy resin molding material for sealing according to any one of the above.
(7) An electronic component device including an element sealed with the sealing epoxy resin molding material according to any one of (1) to (6).

  The epoxy resin molding material for sealing of the present invention has a great fluidity and curability, and an electronic component device having excellent electrical characteristics can be obtained, so that its industrial value is great.

  The epoxy resin used in the present invention is not particularly limited as long as it contains two or more epoxy groups in one molecule. For example, it has a phenol novolak type epoxy resin, an orthocresol novolak type epoxy resin, or a triphenylmethane skeleton. Phenols such as epoxy resin, cresol, xylenol, resorcin, catechol, bisphenol A, bisphenol F, etc. and / or naphthols such as α-naphthol, β-naphthol, dihydroxynaphthalene and formaldehyde, acetaldehyde, propionaldehyde, Epoxidized novolac resin obtained by condensation or cocondensation with a compound having an aldehyde group such as benzaldehyde or salicylaldehyde under an acidic catalyst, alkyl substitution, aromatic ring placement By reaction of polychlorinated acid such as diglycidyl ether such as substituted or unsubstituted bisphenol A, bisphenol F, bisphenol S, biphenol, thiodiphenol, stilbene type epoxy resin, hydroquinone type epoxy resin, phthalic acid, dimer acid and epichlorohydrin Glycidyl ester type epoxy resin obtained, glycidyl amine type epoxy resin obtained by reaction of polyamine such as diaminodiphenylmethane, isocyanuric acid and epichlorohydrin, epoxidized product of co-condensation resin of dicyclopentadiene and phenol, epoxy resin having naphthalene ring, Phenol aralkyl resin, naphthol aralkyl synthesized from phenols and / or naphthols and dimethoxyparaxylene or bis (methoxymethyl) biphenyl Epoxidized products of aralkyl type phenolic resins such as fat, trimethylolpropane type epoxy resin, terpene modified epoxy resin, linear aliphatic epoxy resin obtained by oxidizing olefinic bond with peracid such as peracetic acid, alicyclic epoxy resin These may be used, and one of these may be used alone, or two or more may be used in combination.

  Among these, from the viewpoint of compatibility between fluidity and curability, it is preferable to contain a biphenyl type epoxy resin which is a diglycidyl ether of alkyl-substituted, aromatic ring-substituted or unsubstituted biphenol, and fluidity and flame retardancy. It is preferable to contain a bisphenol F-type epoxy resin that is a diglycidyl ether of alkyl-substituted, aromatic-ring-substituted or unsubstituted bisphenol F from the viewpoint of both compatibility, and alkyl from the viewpoint of compatibility between fluidity and reflowability. It is preferable to contain a thiodiphenol type epoxy resin which is a diglycidyl ether of a substituted, aromatic ring-substituted or unsubstituted thiodiphenol. From the viewpoint of both curability and flame retardancy, an alkyl-substituted, aromatic ring Phenol aralkyl synthesized from substituted or unsubstituted phenol and bis (methoxymethyl) biphenyl It preferably contains an epoxidized resin.

  Examples of the biphenyl type epoxy resin include an epoxy resin represented by the following general formula (I).

（ここで、Ｒ^１〜Ｒ^８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）

(Here, R ^{1 to} R ⁸ are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or 1 to 1. Indicates an integer of 3.)

The biphenyl type epoxy resin represented by the general formula (I) can be obtained by reacting a biphenol compound with epichlorohydrin by a known method. As R < ¹ > -R < ⁸ > in general formula (I), C1-C10, such as a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, a tert-butyl group etc., for example. C1-C10 alkenyl groups, such as an alkyl group, a vinyl group, an allyl group, a butenyl group, etc. are mentioned, Especially, a hydrogen atom or a methyl group is preferable. Examples of such an epoxy resin include 4,4′-bis (2,3-epoxypropoxy) biphenyl or 4,4′-bis (2,3-epoxypropoxy) -3,3 ′, 5,5 ′. -Epoxy resin mainly composed of tetramethylbiphenyl, epoxy resin obtained by reacting epichlorohydrin with 4,4'-biphenol or 4,4 '-(3,3', 5,5'-tetramethyl) biphenol Etc. Among these, an epoxy resin mainly composed of 4,4′-bis (2,3-epoxypropoxy) -3,3 ′, 5,5′-tetramethylbiphenyl is preferable. Such an epoxy resin can be obtained as a commercial product under the trade name YX-4000 manufactured by Japan Epoxy Resin Co., Ltd. The blending amount of the biphenyl type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples thereof include thiodiphenol type epoxy resins, for example, epoxy resins represented by the following general formula (II).

（ここで、Ｒ^１〜Ｒ^８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）

(Here, R ^{1 to} R ⁸ are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or 1 to 1. Indicates an integer of 3.)

The thiodiphenol type epoxy resin represented by the general formula (II) can be obtained by reacting a thiodiphenol compound with epichlorohydrin by a known method. As R < ¹ > -R < ⁸ > in general formula (II), it is C1-C10, such as a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, a tert-butyl group, for example. C1-C10 alkenyl groups, such as an alkyl group, a vinyl group, an allyl group, a butenyl group, etc. are mentioned, Especially, a hydrogen atom, a methyl group, or a tert- butyl group is preferable. Examples of such an epoxy resin include an epoxy resin mainly composed of diglycidyl ether of 4,4′-dihydroxydiphenyl sulfide, and 2,2 ′, 5,5′-tetramethyl-4,4′-dihydroxydiphenyl. Epoxy resin based on diglycidyl ether of sulfide, epoxy resin based on diglycidyl ether of 2,2'-dimethyl-4,4'-dihydroxy-5,5'-di-tert-butyldiphenyl sulfide Among them, an epoxy mainly composed of an epoxy resin mainly composed of diglycidyl ether of 2,2′-dimethyl-4,4′-dihydroxy-5,5′-di-tert-butyldiphenyl sulfide Resins are preferred. Such an epoxy resin is commercially available as a trade name YSLV-120TE manufactured by Nippon Steel Chemical Co., Ltd. The blending amount of the thiodiphenol type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples of the bisphenol F type epoxy resin include an epoxy resin represented by the following general formula (III).

（ここで、Ｒ^１〜Ｒ^８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）

(Here, R ^{1 to} R ⁸ are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or 1 to 1. Indicates an integer of 3.)

The bisphenol F type epoxy resin represented by the general formula (III) can be obtained by reacting a bisphenol F compound with epichlorohydrin by a known method. As R < ¹ > -R < ⁸ > in general formula (III), it is C1-C10, such as a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, a tert-butyl group, for example. C1-C10 alkenyl groups, such as an alkyl group, a vinyl group, an allyl group, a butenyl group, etc. are mentioned, Especially, a hydrogen atom or a methyl group is preferable. Examples of such an epoxy resin include an epoxy resin mainly composed of 4,4′-methylenebis (2,6-dimethylphenol) diglycidyl ether, and 4,4′-methylenebis (2,3,6-trimethyl). (Epoxy) epoxy resin mainly composed of diglycidyl ether, epoxy resin mainly composed of 4,4′-methylenebisphenol diglycidyl ether, etc., among others, 4,4′-methylene bis (2,6- An epoxy resin mainly composed of diglycidyl ether of (dimethylphenol) is preferred. Such an epoxy resin is commercially available as a trade name YSLV-80XY manufactured by Nippon Steel Chemical Co., Ltd. The blending amount of the bisphenol F-type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples of the epoxidized phenol / aralkyl resin include epoxy resins represented by the following general formula (IV).

（ここで、Ｒ^１〜Ｒ^９は水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、ｎは０又は１〜１０の整数を示す。）

(Here, R ^{1 to} R ⁹ are selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and all may be the same or different. 3 represents an integer, and n represents 0 or an integer of 1 to 10.)

The epoxidized product of the biphenylene skeleton-containing phenol / aralkyl resin represented by the general formula (IV) is obtained by adding epichlorohydrin to a phenol / aralkyl resin synthesized from alkyl-substituted, aromatic-ring-substituted or unsubstituted phenol and bis (methoxymethyl) biphenyl. It can be obtained by reacting by a known method. Examples of R ^{1 to} R ⁹ in the general formula (IV) include a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, a pentyl group, a hexyl group, Chain alkyl groups such as octyl group, decyl group and dodecyl group, cyclic alkyl groups such as cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group and cyclohexenyl group, and aryl group-substituted alkyl groups such as benzyl group and phenethyl group , Alkoxy groups substituted alkyl groups such as methoxy group substituted alkyl groups, ethoxy group substituted alkyl groups, butoxy group substituted alkyl groups, amino group substituted alkyl groups such as aminoalkyl groups, dimethylaminoalkyl groups, diethylaminoalkyl groups, hydroxyl group substituted alkyl groups , Phenyl group, naphthyl group, biphenyl group, etc. Alkyl group, tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group and other alkyl group-substituted aryl groups, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert- Examples include alkoxy group-substituted aryl groups such as butoxyphenyl group and methoxynaphthyl group, amino group-substituted aryl groups such as dimethylamino group and diethylamino group, and hydroxyl group-substituted aryl groups. Among them, a hydrogen atom or a methyl group is preferable. Moreover, as an n in general formula (IV), 6 or less is more preferable on average, and such an epoxy resin is commercially available as a product name NC-3000S manufactured by Nippon Kayaku Co., Ltd.

Moreover, it is preferable to contain the epoxy resin shown by the said general formula (I) from a viewpoint of coexistence of a flame retardance, reflow resistance, and fluidity, Especially R < ¹ > of the said general formula (IV)- More preferably, R ⁸ is a hydrogen atom, and R ^{1 to} R ^{8 in} the general formula (I) are hydrogen atoms and n = 0. In particular, the blending mass ratio is preferably (I) / (IV) = 50/50 to 5/95, more preferably 40/60 to 10/90, and 30/70 to 15/85. Is more preferred. As a compound satisfying such a blending mass ratio, CER-3000L (trade name, manufactured by Nippon Kayaku Co., Ltd.) and the like are commercially available.

  The biphenyl type epoxy resin, thiodiphenol type epoxy resin, bisphenol F type epoxy resin and epoxidized product of phenol / aralkyl resin may be used alone or in combination of two or more. However, when 2 or more types are used in combination, the blending amount is preferably 50% by mass or more, more preferably 60% by mass or more, and still more preferably 80% by mass or more in the total amount of the epoxy resin.

  The curing agent used in the present invention is not particularly limited as it is generally used for an epoxy resin molding material for sealing. For example, phenol, cresol, resorcin, catechol, bisphenol A, bisphenol F, phenylphenol, thiol Condensation or cocondensation of phenols such as diphenol and aminophenol and / or naphthols such as α-naphthol, β-naphthol and dihydroxynaphthalene with compounds having an aldehyde group such as formaldehyde, benzaldehyde and salicylaldehyde in an acidic catalyst Phenolic aralkyl resin, naphthol aralkyl tree synthesized from novolac type phenolic resin, phenols and / or naphthols and dimethoxyparaxylene or bis (methoxymethyl) biphenyl Aralkyl-type phenol resins such as fats, copolymer-type phenol-aralkyl resins in which the phenol / novolak structure and the phenol-aralkyl structure are random, block or alternately repeated, paraxylylene and / or metaxylylene-modified phenol resin, melamine-modified phenol resin, terpene Examples thereof include modified phenol resins, dicyclopentadiene modified phenol resins, cyclopentadiene modified phenol resins, polycyclic aromatic ring modified phenol resins, and the like. These may be used alone or in combination of two or more.

  Of these, phenol / aralkyl resins and copolymeric phenol / aralkyl resins are preferred from the viewpoint of fluidity, flame retardancy and reflow resistance, and triphenylmethane type from the viewpoint of heat resistance, low expansion rate and low warpage. Phenol resins are preferred and preferably contain at least one of these phenol resins.

  Examples of the phenol / aralkyl resin include a resin represented by the following general formula (V).

（ここで、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）

(Here, R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and all may be the same or different. I is an integer of 0 or 1-3. X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)

  As R in the general formula (V), for example, methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, octyl group, Decyl group, chain alkyl group such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group Substituted alkyl group, ethoxy group substituted alkyl group, alkoxy group substituted alkyl group such as butoxy group substituted alkyl group, aminoalkyl group, dimethylaminoalkyl group, amino group substituted alkyl group such as diethylaminoalkyl group, hydroxyl group substituted alkyl group, phenyl group, Unsubstituted aryl groups such as naphthyl group and biphenyl group, Alkyl group-substituted aryl groups such as ryl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl group, Examples include an alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable.

  X represents a group containing an aromatic ring, for example, an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, a benzyl group or a phenethyl group. And a divalent group containing an arylene group such as a divalent group obtained from a group, an aralkyl group-substituted arylene group, and a xylylene group. Among them, from the viewpoint of achieving both flame retardancy and reflow resistance, a substituted or unsubstituted biphenylene group is preferable, and examples thereof include a phenol / aralkyl resin represented by the following general formula (VI). From the standpoint of achieving both good and curability, a substituted or unsubstituted phenylene group is preferred, and examples thereof include a phenol / aralkyl resin represented by the following general formula (VII). n shows 0 or the integer of 1-10, and 6 or less is more preferable on average.

（ここで、ｎは０又は１〜１０の整数を示す。）

(Here, n represents 0 or an integer of 1 to 10.)

（ここで、ｎは０又は１〜１０の整数を示す。）

(Here, n represents 0 or an integer of 1 to 10.)

  As a biphenylene skeleton containing phenol aralkyl resin represented by the above general formula (VI), MEH-7851 manufactured by Meiwa Kasei Co., Ltd. may be mentioned as a commercial product, and as a phenol aralkyl resin represented by the general formula (VII) As a commercial product, trade name XLC manufactured by Mitsui Chemicals, Inc. may be mentioned. The blending amount of the phenol-aralkyl resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the curing agent in order to exhibit its performance.

  Examples of the triphenylmethane type phenol resin include a phenol resin represented by the following general formula (VIII).

（ここで、Ｒは水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、ｎは０〜１０の整数を示す。）

(Here, R is selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 to 10.)

  Examples of R in the general formula (VIII) include a hydrogen atom, an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, and a tert-butyl group, a vinyl group, an allyl group, and a butenyl group. C1-C10 substituted or unsubstituted monovalent hydrocarbon group such as alkenyl group, halogenated alkyl group, amino group-substituted alkyl group, mercapto group-substituted alkyl group, etc., among which methyl group, ethyl group Alkyl groups and hydrogen atoms such as methyl groups and hydrogen atoms are more preferable. When using a triphenylmethane type phenol resin, the blending amount is preferably 30% by mass or more, more preferably 50% by mass or more, based on the total amount of the curing agent in order to exhibit its performance.

  As copolymerization type phenol aralkyl resin, the phenol resin shown, for example by the following general formula (IX) is mentioned.

（ここで、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基及び水酸基から選ばれ、すべてが同一でも異なっていてもよい。またＸは芳香環を含む二価の基を示す。ｎ及びｍは０又は１〜１０の整数を示す。）

(Wherein R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms and a hydroxyl group, all of which may be the same or different. And n and m are each 0 or an integer of 1 to 10.)

  Examples of R in the general formula (IX) include a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, a pentyl group, a hexyl group, an octyl group, Decyl group, chain alkyl group such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group Substituted alkyl group, ethoxy group substituted alkyl group, alkoxy group substituted alkyl group such as butoxy group substituted alkyl group, aminoalkyl group, dimethylaminoalkyl group, amino group substituted alkyl group such as diethylaminoalkyl group, hydroxyl group substituted alkyl group, phenyl group, Unsubstituted aryl groups such as naphthyl group and biphenyl group Alkyl group-substituted aryl group such as tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl group, Examples include an alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable, and n and m are 0. Or the integer of 1-10 is shown and 6 or less is more preferable on average.

X in the general formula (IX) is, for example, an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, an aralkyl group-substituted arylene group, or a benzyl group. , Divalent groups obtained from an aralkyl group such as a phenethyl group, divalent groups containing an arylene group such as a xylylene group, etc., among others, substituted or unsubstituted from the viewpoint of storage stability and flame retardancy The phenylene group and biphenylene group are preferred.
As the compound represented by the general formula (IX), HE-510 (trade name, manufactured by Air Water Co., Ltd.) and the like are commercially available.
In the case of using a copolymeric phenol / aralkyl resin, the blending amount thereof is preferably 30% by mass or more, more preferably 50% by mass or more, based on the total amount of the curing agent in order to exhibit its performance.

  The above-mentioned phenol / aralkyl resin, triphenylmethane type phenol resin and copolymer type phenol / aralkyl resin may be used alone or in combination of two or more. When used in combination, the blending amount is preferably 50% by mass or more, more preferably 60% by mass or more, and further preferably 80% by mass or more in the total amount of phenol resin.

  In the present invention, the equivalent ratio of the epoxy resin and the curing agent, that is, the ratio of the number of hydroxyl groups in the curing agent to the epoxy group (number of hydroxyl groups in the curing agent / number of epoxy groups in the epoxy resin) is not particularly limited, Is preferably set in the range of 0.5 to 2 and more preferably in the range of 0.6 to 1.3 in order to suppress the unreacted content of the resin. In order to obtain a sealing epoxy resin molding material excellent in moldability and solder reflow resistance, it is more preferably set in the range of 0.8 to 1.2.

  Melanin used in the present invention is a generic name for brown or black polymer pigments produced by oxidation of phenols with oxidase, and is a body color pigment widely distributed in the animal and plant kingdoms. Among them, eumelanin showing a black color is a compound in which 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid are polymerized. Since melanin is usually strongly bound to a protein by covalent bond or ionic bond and is difficult to separate, melanin is a generic name including a mixture or compound with protein.

  The melanin used in the present invention is not particularly limited as long as it is the above polymer pigment, but black eumelanin is preferable from the viewpoint of colorability. Eumelanin is not particularly limited as long as it is the above compound or mixture, and examples thereof include squid obtained from a black bag in the internal organs of squid (squid), an extract of its pigment component, and a processed product thereof. These are available as commercially available products such as Ikasumi Powder, Aika Black S, Sepia IC (trade name, manufactured by Nippon Chlorophyll Co., Ltd.) and the like.

  The melanin used in the present invention may be used alone or in combination, or may be used by previously mixing with a resin such as an epoxy resin or a curing agent.

  The blending amount of melanin used in the present invention is not particularly limited as long as the effect of the present invention is achieved, but is 0.1% by mass to the total blending amount of the epoxy resin molding material for sealing. 1.5 mass% is preferable and 0.1 mass%-1 mass% are more preferable.

  The sealing epoxy resin molding material of the present invention may contain a colorant as long as the effects of the present invention are achieved. Colorants that can be used are dyes such as azo, anthraquinone and phthalocyanine, azine, azo, anthraquinone, diimonium, diiminium, phthalocyanine, metal salt organic pigments, Al, Mg, Fe, Ti, etc. Examples thereof include metal oxide inorganic pigments, composite metal oxide pigments such as Cu, Cr, and Mn, pitch, and carbon black. Among these, phthalocyanine dyes or pigments, aniline black, perylene black, black iron oxide, black titanium oxide, and pitch are preferable from the viewpoint of colorability, and black titanium oxide or pitch is more preferable from the viewpoint of laser mark property. Examples of such black titanium oxide include commercially available product name Titanium Black manufactured by Gemco Co., Ltd., and examples of pitch include product name MCMB Green manufactured by Osaka Gas Chemical Co., Ltd.

  When using a colorant that does not contain melanin, the total amount of melanin and the colorant that does not contain melanin is not particularly limited as long as the effects of the present invention are achieved. 0.1 to 1.5% by mass is preferable, and 0.1 to 1% by mass is more preferable. The blending amount of melanin is preferably 30% by mass or more, more preferably 45% by mass or more, and more preferably 60% by mass or more in the colorant not containing melanin and melanin from the viewpoint of colorability and short circuit failure. It is more preferable to contain.

  The molding material of the present invention may contain a curing accelerator. As a hardening accelerator used by this invention, it is generally used with the epoxy resin molding material for sealing, and there is no limitation in particular. For example, 1,8-diazabicyclo [5.4.0] undecene-7,1,5-diazabicyclo [4.3.0] nonene-5,5,6-dibutylamino-1,8-diazabicyclo [5.4 .0] cycloamidine compounds such as undecene-7 and these compounds to maleic anhydride, 1,4-benzoquinone, 2,5-toluquinone, 1,4-naphthoquinone, 2,3-dimethylbenzoquinone, 2,6-dimethyl Quinones such as benzoquinone, 2,3-dimethoxy-5-methyl-1,4benzoquinone, 2,3-dimethoxy-1,4-benzoquinone, phenyl-1,4-benzoquinone, π such as diazophenylmethane, phenol resin, etc. Compound with intramolecular polarization formed by adding a compound with bond, benzyldimethylamine, triethanolamine, dimethylamine Tertiary amines such as ethanol and tris (dimethylaminomethyl) phenol and their derivatives, imidazoles such as 2-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-heptadecylimidazole and the like Derivatives, organic phosphines such as tributylphosphine, methyldiphenylphosphine, triphenylphosphine, tris (4-methylphenyl) phosphine, diphenylphosphine, phenylphosphine and the like, and maleic anhydride, the above quinone compounds, diazophenylmethane Phosphorus compounds with intramolecular polarization formed by adding a compound having a π bond such as phenol resin, tetraphenylphosphonium tetraphenylborate, tetraphenylphosphonium ethyltrif Tetra-substituted phosphonium and tetra-substituted borates such as nylborate and tetrabutylphosphonium tetrabutylborate, tetraphenylboron salts such as 2-ethyl-4-methylimidazole and tetraphenylborate, N-methylmorpholine and tetraphenylborate, and derivatives thereof These may be used alone or in combination of two or more.

Among these, an adduct of a tertiary phosphine and a quinone compound is preferable from the viewpoint of curability and fluidity, and an adduct of a cycloamidine compound and a phenol resin is preferable from the viewpoint of storage stability, and diazabicycloundecene. The novolac type phenol resin salt is more preferable.
The blending amount of these curing accelerators is preferably 60% by mass or more, more preferably 80% by mass or more in the total amount of the curing accelerator.

  The tertiary phosphine used in the adduct of the tertiary phosphine and the quinone compound is not particularly limited, but examples thereof include dibutylphenylphosphine, butyldiphenylphosphine, ethyldiphenylphosphine, triphenylphosphine, and tris (4-methylphenyl) phosphine. , Tris (4-ethylphenyl) phosphine, tris (4-propylphenyl) phosphine, tris (4-butylphenyl) phosphine, tris (isopropylphenyl) phosphine, tris (tert-butylphenyl) phosphine, tris (2,4- Dimethylphenyl) phosphine, tris (2,6-dimethylphenyl) phosphine, tris (2,4,6-trimethylphenyl) phosphine, tris (2,6-dimethyl-4-ethoxyphenyl) phosphine, tris (4-methoxyphenyl) phosphine, tertiary phosphines are exemplified with an aryl group such as tris (4-ethoxyphenyl) phosphine, triphenylphosphine is preferable in view of moldability.

  Further, the quinone compound used for the adduct of the tertiary phosphine and the quinone compound is not particularly limited, and examples thereof include o-benzoquinone, p-benzoquinone, diphenoquinone, 1,4-naphthoquinone, anthraquinone, and the like. P-benzoquinone is preferable from the viewpoint of stability or storage stability.

  The blending amount of the curing accelerator is not particularly limited as long as the curing acceleration effect is achieved, but is 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of the epoxy resin and the curing agent. Preferably, 0.3-5 mass parts is more preferable. If it is less than 0.1 parts by mass, it is difficult to cure in a short time, and if it exceeds 10 parts by mass, the curing rate tends to be too fast and a good molded product tends not to be obtained.

  The molding material of the present invention may contain an inorganic filler. The inorganic filler used in the present invention is blended in a molding material for hygroscopicity, linear expansion coefficient reduction, thermal conductivity improvement and strength improvement, and is generally used for epoxy resin molding materials for sealing. It is not particularly limited as long as it is, for example, fused silica, crystalline silica, alumina, zircon, calcium silicate, calcium carbonate, potassium titanate, silicon carbide, silicon nitride, aluminum nitride, boron nitride, beryllia, Examples include powders such as zirconia, zircon, fosterite, steatite, spinel, mullite, titania, or beads made of these spheroids, glass fibers, etc., and these may be used alone or in combination of two or more. Also good. Among these, fused silica is preferable from the viewpoint of reducing the linear expansion coefficient, and alumina is preferable from the viewpoint of high thermal conductivity, and the filler shape is preferably spherical from the viewpoint of fluidity during molding and mold wear. In particular, spherical fused silica is preferable from the viewpoint of a balance between cost and performance.

  The blending amount of the inorganic filler is preferably 70 to 95% by mass in the epoxy resin molding material for sealing, from the viewpoint of flame retardancy, moldability, hygroscopicity, reduction of linear expansion coefficient and improvement of strength, and hygroscopicity, linear expansion. From the viewpoint of reducing the coefficient, 84 to 95% by mass is more preferable. If it is less than 70% by mass, the flame retardancy and reflow resistance tend to decrease, and if it exceeds 95% by mass, the fluidity tends to be insufficient.

The molding material of the present invention may contain a silane compound. Silane compounds are various silane compounds such as epoxy silane, mercapto silane, amino silane, alkyl silane, ureido silane, and vinyl silane.
Examples of these are vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxy. Propylmethyldimethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-methacryloxypropyldimethylmethoxysilane, γ-methacryloxypropyldimethylethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-acryloxypropyltriethoxysilane , Β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ Glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropyldimethylmethoxysilane, γ-glycidoxypropyldimethylethoxysilane, vinyltriacetoxysilane, γ-mercaptopropyltrimethoxy Silane, γ-mercaptopropyltriethoxysilane, bis (triethoxysilylpropyl) tetrasulfide, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ- [bis (β-hydroxyethyl)] aminopropyltri Ethoxysilane, N-β- (aminoethyl) -γ-aminopropyltriethoxysilane, N- (trimethoxysilylpropyl) ethylenediamine, isocyanatepropyltrimethoxysilane, isocyanate group Pyrtriethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, diphenylsilanediol, triphenylmethoxy Silane, triphenylethoxysilane, triphenylsilanol, N-β- (N-vinylbenzylaminoethyl) -γ-aminopropyltrimethoxysilane, γ-chloropropyltrimethoxysilane, hexamethyldisilane, γ-anilinopropyltri Methoxysilane, γ-anilinopropyltriethoxysilane, 2-triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, 3-triethoxysilyl- -(1,3-dimethyl-butylidene) propylamine, N- (3-triethoxysilylpropyl) phenylimine, 3- (3- (triethoxysilyl) propylamino) -N, N-dimethylpropionamide, N- Silane compounds such as triethoxysilylpropyl-β-alanine methyl ester, 3- (triethoxysilylpropyl) dihydro-3,5-furandion, bis (trimethoxysilyl) benzene, 1H-imidazole, 2-alkylimidazole, It is a reaction product of imidazole compounds such as 2,4-dialkylimidazole and 4-vinylimidazole and γ-glycidoxypropylalkoxysilane such as γ-glycidoxypropyltrimethoxysilane and γ-glycidoxypropyltriethoxysilane. Imidazole-based silane compounds It is. One of these silane compounds may be used alone, or two or more thereof may be used in combination.

  These silane compounds may be silane compounds obtained by polymerizing one kind or a combination of two or more kinds. The polymerized silane compound is preferably a compound having a weight average molecular weight of 3000 or less obtained by polymerizing an alkoxysilyl group portion of γ-glycidoxypropyltrimethoxysilane from the viewpoint of a balance between fluidity and reflow resistance. . These polymerized silane compounds may be used alone or in combination of two or more, or may be used in combination with a silane compound.

  The total amount of the silane compound is preferably 0.06 to 2% by mass, more preferably 0.1 to 0.75% by mass in the epoxy resin molding material for sealing, from the viewpoints of moldability and adhesiveness. 0.7 mass% is more preferable. If it is less than 0.06% by mass, the adhesion to various package members tends to be reduced, and if it exceeds 2% by mass, molding defects such as voids tend to occur.

  A conventionally well-known coupling agent may be mix | blended with the epoxy resin molding material for sealing of this invention. For example, isopropyl triisostearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, isopropyl tri (N-aminoethyl-aminoethyl) titanate, tetraoctyl bis (ditridecyl phosphite) titanate, tetra (2,2-diallyloxymethyl) -1-butyl) bis (ditridecyl) phosphite titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate, isopropyltrioctanoyl titanate, isopropyldimethacrylisostearoyl titanate, isopropylisostearoyldiacrylic Titanate, isopropyl tri (dioctyl phosphate) titanate, isopropyl tricumi Examples include titanate coupling agents such as phenyl titanate and tetraisopropyl bis (dioctyl phosphite) titanate, aluminum chelates, aluminum / zirconium compounds, etc. Even if one of these is used alone, two or more are combined. It may be used. Further, the total blending amount of these coupling agents is preferably 0.06 to 2% by mass, more preferably 0.1 to 0.75% by mass in the sealing epoxy resin molding material from the viewpoint of moldability and adhesiveness. More preferably, it is 2 to 0.7% by mass. If it is less than 0.06% by mass, the adhesion to various package members tends to be reduced, and if it exceeds 2% by mass, molding defects such as voids tend to occur.

Moreover, an anion exchanger can be blended with the epoxy resin molding material for sealing of the present invention, if necessary, for the purpose of improving the moisture resistance and high temperature storage characteristics of the IC. The anion exchanger is not particularly limited, and conventionally known anion exchangers can be used. Examples thereof include hydrotalcites and hydrated oxides of elements selected from magnesium, aluminum, titanium, zirconium, and bismuth. These may be used alone or in combination of two or more. Of these, hydrotalcite represented by the following composition formula (X) is preferable.
Mg _1-X Al _X (OH) ₂ (CO ₃ ) _{X / 2} · mH ₂ O (X)
(In formula (X), 0 <X ≦ 0.5, m is a positive number)

  The amount of the anion exchanger is not particularly limited as long as it is sufficient to capture anions such as halogen ions, but is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the epoxy resin. 1 to 5 parts by mass is more preferable.

  In the sealing epoxy resin molding material of the present invention, an adhesion promoter can be used as necessary in order to further improve the adhesion. Examples of the adhesion promoter include derivatives such as imidazole, triazole, tetrazole and triazine, anthranilic acid, gallic acid, malonic acid, malic acid, maleic acid, aminophenol, quinoline and the like, and derivatives thereof, aliphatic acid amide compounds, Examples thereof include dithiocarbamate and thiadiazole derivatives. One of these may be used alone, or two or more may be used in combination.

  A release agent may be used in the sealing epoxy resin molding material of the present invention as necessary. As a mold release agent, it is preferable to use 0.01-10 mass parts with respect to 100 mass parts of epoxy resins, and, as for a release agent, it is more preferable to use 0.1-5 mass parts. If it is less than 0.01 parts by mass, the releasability tends to be insufficient, and if it exceeds 10 parts by mass, the adhesiveness tends to decrease. Examples of the oxidized or non-oxidized polyolefin include low molecular weight polyethylene having a number average molecular weight of about 500 to 10,000, such as trade name H4 manufactured by Hoechst Corporation, PE, and PED series. Other examples of the release agent include carnauba wax, montanic acid ester, montanic acid, stearic acid, and the like. These may be used alone or in combination of two or more. When these other release agents are used in addition to the oxidized or non-oxidized polyolefin, the blending amount is set to 0.100 parts by mass with respect to 100 parts by mass of the epoxy resin. 1-10 mass parts is preferable, and 0.5-3 mass parts is more preferable.

A conventionally known flame retardant can be blended in the sealing epoxy resin molding material of the present invention as required. For example, red phosphorus coated with inorganic substances such as brominated epoxy resin, antimony trioxide, red phosphorus, aluminum hydroxide, magnesium hydroxide, zinc oxide and / or thermosetting resins such as phenol resin, phosphoric acid ester, etc. Phosphorus compounds, melamine, melamine derivatives, melamine-modified phenol resins, compounds having a triazine ring, nitrogen-containing compounds such as cyanuric acid derivatives and isocyanuric acid derivatives, phosphorus and nitrogen-containing compounds such as cyclophosphazene, aluminum hydroxide, magnesium hydroxide And a composite metal hydroxide represented by the following composition formula (XI).
^{_{p (M 1 a O b)}} · q (M 2 c O d) · r (M 3 e O f) · mH 2 O ··· (XI)
(In formula (XI), M ¹ , M ² and M ³ represent different metal elements, a, b, c, d, p, q and m are positive numbers, and r is 0 or a positive number. .)

M ¹ , M ² and M ^{3 in the} composition formula (XI) are not particularly limited as long as they are different metal elements, but from the viewpoint of flame retardancy, M ¹ is a metal element of the third period, group IIA Preferably selected from metal elements belonging to the alkaline earth metal elements, group IVB, group IIB, group VIII, group IB, group IIIA and group IVA, and M ² is selected from transition metal elements of groups IIIB to IIB, More preferably, M ¹ is selected from magnesium, calcium, aluminum, tin, titanium, iron, cobalt, nickel, copper and zinc, and M ² is selected from iron, cobalt, nickel, copper and zinc. From the viewpoint of fluidity, it is preferable that M ¹ is magnesium, M ² is zinc or nickel, and r = 0. The molar ratio of p, q and r is not particularly limited, but preferably r = 0 and p / q is 1/99 to 1/1. The metal element is classified into a long-period periodic table in which the typical element is the A group and the transition element is the B group (Source: Kyoritsu Shuppan Co., Ltd., “Chemical Dictionary 4”, February 15, 1987). (Reduced plate 30th printing). Further, compounds containing metal elements such as zinc oxide, zinc stannate, zinc borate, iron oxide, molybdenum oxide, zinc molybdate, dicyclopentadienyl iron, etc. may be mentioned, and one of these may be used alone. Two or more kinds may be used in combination. Although the compounding quantity of a flame retardant does not have a restriction | limiting in particular, 1-30 mass parts is preferable with respect to 100 mass parts of epoxy resins, and 2-15 mass parts is more preferable.

  Moreover, you may use coloring agents, such as carbon black, an organic dye, an organic pigment, a titanium oxide, a red lead, a bengara, for the epoxy resin molding material for sealing of this invention. Furthermore, as other additives, stress relaxation agents such as silicone oil and silicone rubber powder can be blended as required.

  The epoxy resin molding material for sealing of the present invention can be prepared by any method as long as various components can be uniformly dispersed and mixed, but as a general method, components of a predetermined blending amount are mixed by a mixer or the like. A method of cooling and pulverizing after mixing sufficiently, melt-kneading with a mixing roll, an extruder or the like can be mentioned. For example, a predetermined amount of the above-described components can be uniformly stirred and mixed, and can be obtained by a method such as kneading, cooling, and pulverizing with a kneader, roll, extruder, or the like that has been heated to 70 to 140 ° C. in advance. It is easy to use if it is tableted with dimensions and mass that match the molding conditions.

  As an electronic component device provided with an element sealed with an epoxy resin molding material for sealing obtained in the present invention, a semiconductor chip is mounted on a support member such as a lead frame, a wired tape carrier, a wiring board, glass, or a silicon wafer. An electronic component device equipped with active elements such as transistors, diodes and thyristors, and passive elements such as capacitors, resistors and coils, and encapsulated with the epoxy resin molding material for sealing of the present invention Etc. As such an electronic component device, for example, a semiconductor element is fixed on a lead frame, a terminal portion of a device such as a bonding pad and a lead portion are connected by wire bonding or a bump, and then the sealing epoxy resin of the present invention is used. DIP (Dual Inline Package), PLCC (Plastic Leaded Chip Carrier), QFP (Quad Flat Package), SOP (Small Outline Package), SOJ (Small Out Package), which is sealed by molding using a molding material. General resin-sealed type I such as lead package, TSOP (Thin Small Outline Package), TQFP (Thin Quad Flat Package), etc. A semiconductor chip connected to a tape carrier with a bump is sealed with a tape carrier package (TCP) sealed with an epoxy resin molding material of the present invention, wiring formed on a wiring board or glass, wire bonding, flip chip bonding COB (Chip) in which active elements such as semiconductor chips, transistors, diodes, thyristors and / or passive elements such as capacitors, resistors, coils, etc., which are connected by solder, etc., are sealed with the sealing epoxy resin molding material of the present invention On Board) Modules, hybrid ICs, multi-chip modules, devices mounted on the surface of the organic substrate with the wiring board connection terminals formed on the back, and the devices and the wiring formed on the organic substrate were connected by bump or wire bonding After, the epoxy resin molding material for sealing of the present invention Examples thereof include BGA (Ball Grid Array) and CSP (Chip Size Package) in which the element is sealed with a material. Moreover, the epoxy resin molding material for sealing of the present invention can also be used effectively for printed circuit boards.

  As a method for sealing an element using the epoxy resin molding material for sealing of the present invention, a low-pressure transfer molding method is the most common, but an injection molding method, a compression molding method, or the like may be used.

EXAMPLES Next, although an Example demonstrates this invention, the scope of the present invention is not limited to these Examples.
(Examples 1-11, Comparative Examples 1-7)
The following components are blended in parts by mass shown in Tables 1 to 3 below, and roll kneading is performed under conditions of a kneading temperature of 80 ° C. and a kneading time of 10 minutes. An epoxy resin molding material was prepared. The blank in the table indicates no blending.

As an epoxy resin, an epoxy equivalent of 196, a biphenyl type epoxy resin having a melting point of 106 ° C. (epoxy resin 1, trade name YX-4000 manufactured by Japan Epoxy Resin Co., Ltd.),
A thiodiphenol type epoxy resin having an epoxy equivalent of 242 and a melting point of 118 ° C. (epoxy resin 2, trade name YSLV-120TE manufactured by Nippon Steel Chemical Co., Ltd.)
Bisphenol F type epoxy resin having an epoxy equivalent of 192 and a melting point of 79 ° C. (epoxy resin 3, trade name YSLV-80XY manufactured by Nippon Steel Chemical Co., Ltd.),
Biphenylene skeleton-containing phenol / aralkyl epoxy resin having an epoxy equivalent of 241 and a softening point of 96 ° C. (epoxy resin 4, Nippon Kayaku Co., Ltd., trade name CER-3000L),
A bisphenol A-type brominated epoxy resin (epoxy resin 5) having an epoxy equivalent of 375, a softening point of 80 ° C., and a bromine content of 48 mass% was used.

As a curing agent, a phenol aralkyl resin having a hydroxyl group equivalent of 199 and a softening point of 89 ° C. (curing agent 1, trade name MEH-7851 manufactured by Meiwa Kasei Co., Ltd.),
Phenol aralkyl resin having a hydroxyl group equivalent of 176 and a softening point of 70 ° C. (curing agent 2, trade name “Mirex XLC” manufactured by Mitsui Chemicals, Inc.)
Triphenylmethane type phenolic resin having a hydroxyl group equivalent of 104 and a softening point of 83 ° C. (curing agent 3, trade name MEH-7500 manufactured by Meiwa Kasei Co., Ltd.),
A phenol resin having a hydroxyl group equivalent of 156 and a softening point of 83 ° C. (curing agent 4, trade name HE-510 manufactured by Air Water Co., Ltd.) was used.

As the melanin, squid ink powder (melanin 1), Aika black S (melanin 2), as the curing accelerator, betaine type adduct of triphenylphosphine and p-benzoquinone (curing accelerator 1), tributylphosphine and p-benzoquinone Betaine adduct (curing accelerator 2), spherical filler silica having an average particle size of 17.5 μm and specific surface area of 3.8 m ² / g as an inorganic filler, and γ-glycidoxypropyltrimethoxysilane as a silane compound (Silane compound) and other additive components were carnauba wax, antimony trioxide, and carbon black.

The epoxy resin molding materials for sealing of Examples and Comparative Examples were evaluated by the following various characteristic tests (1) to (5). The evaluation results are shown in Tables 1 to 3 below. The epoxy resin molding material for sealing was molded by a transfer molding machine under conditions of a mold temperature of 180 ° C., a molding pressure of 6.9 MPa, and a curing time of 90 seconds unless otherwise specified. Further, post-curing was performed at 180 ° C. for 5 hours.
(1) Spiral flow Using a spiral flow measurement mold in accordance with EMMI-1-66, the sealing epoxy molding material was molded under the above conditions, and the flow distance (cm) was determined.
(2) Hardness under heat The epoxy resin molding material for sealing is molded into a disc having a diameter of 50 mm and a thickness of 3 mm under the above conditions, and immediately after molding, a Shore D hardness meter (HD-1120 (type D )).
(3) Solder reflow resistance An 80-pin flat package having an outer dimension of 20 × 14 × 2 mm, in which a 6 × 8 mm silicon chip is mounted on a copper lead frame, is molded under the above conditions using an epoxy resin molding material for sealing. It is made by post-curing, humidified for 168 hours under conditions of 85 ° C. and 60% RH, and then subjected to reflow treatment under conditions of 245 ° C. and 10 seconds. The presence or absence of occurrence of peeling inside the package was observed by FOCUS), and the number of peeling occurrence packages with respect to the number of test packages (10) was evaluated.
(4) Colorability The epoxy resin molding material for sealing was molded into a disk having a diameter of 50 mm and a thickness of 3 mm under the above conditions, and using a spectroscopic color meter SE-2000 (manufactured by Nippon Denshoku Industries Co., Ltd.), C L ^* (brightness) of the L ^* a ^* b ^* color system was determined by a light source, a viewing angle of 2 degrees, and a reflection method, and used as an index of blackness.
(5) Electrical characteristics A 176-pin flat package having an external dimension of 20 mm × 20 mm × 1.4 mm, in which a silicon chip of 8 mm × 8 mm × 0.4 mm is mounted on a copper lead frame, is formed by using an epoxy resin molding material for sealing. It was produced under the conditions, and was evaluated by the number of packages in which short-circuit defects occurred with respect to the number of test packages (500).

The following things were understood from Tables 1-3. The comparative examples 1-7 which do not contain the melanin in this invention are all inferior to fluidity | liquidity, coloring property, and an electrical property.
On the other hand, Examples 1-11 are excellent in an electrical property, and fluidity, heat hardness, reflow resistance, and coloring property are equivalent or more compared with the comparative example of the same resin composition except melanin.

Claims (7)

  An epoxy resin molding material for sealing containing an epoxy resin, a curing agent, and melanin.   The epoxy resin molding material for sealing according to claim 1, wherein the melanin is eumelanin.   The epoxy resin molding material for sealing according to claim 1, wherein melanin is a pigment component of squid ink.   The ratio of melanin is 0.1-1.5 mass% with respect to the total compounding quantity of the epoxy resin molding material for sealing, The epoxy resin molding material for sealing in any one of Claims 1-3.   Epoxy resin is biphenyl type epoxy resin, thiodiphenol type epoxy resin, novolac type epoxy resin, naphthalene type epoxy resin, triphenylmethane type epoxy resin, bisphenol F type epoxy resin, phenol aralkyl type epoxy resin and naphthol aralkyl type. The epoxy resin molding material for sealing according to any one of claims 1 to 4, comprising at least one of epoxy resins.   The curing agent contains at least one of a phenol aralkyl resin, a naphthol aralkyl resin, a triphenylmethane type phenol resin, a novolac type phenol resin and a copolymer type phenol aralkyl resin. The epoxy resin molding material for sealing as described in 2.   An electronic component device provided with the element sealed with the epoxy resin molding material for sealing in any one of Claims 1-6.