WO2005112091A1 - 粘接着シート並びにそれを用いた半導体装置及びその製造方法 - Google Patents
粘接着シート並びにそれを用いた半導体装置及びその製造方法 Download PDFInfo
- Publication number
- WO2005112091A1 WO2005112091A1 PCT/JP2005/008971 JP2005008971W WO2005112091A1 WO 2005112091 A1 WO2005112091 A1 WO 2005112091A1 JP 2005008971 W JP2005008971 W JP 2005008971W WO 2005112091 A1 WO2005112091 A1 WO 2005112091A1
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- WIPO (PCT)
- Prior art keywords
- adhesive sheet
- adhesive layer
- adhesive
- epoxy resin
- molecular weight
- Prior art date
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Definitions
- Adhesive sheet, semiconductor device using the same, and method of manufacturing the same are Adhesive sheet, semiconductor device using the same, and method of manufacturing the same
- the present invention relates to an adhesive sheet, a semiconductor device using the same, and a method for manufacturing the same.
- silver paste has been mainly used for joining a semiconductor element and a supporting member for mounting a semiconductor element.
- the supporting members used are also required to be smaller and finer.
- silver paste has various problems, such as the occurrence of problems during wire bonding due to protrusion and inclination of semiconductor elements, difficulty in controlling the thickness of the adhesive layer, and generation of voids in the adhesive layer. there were.
- a film-like adhesive has recently been used. The film-like adhesive is used in accordance with an individual sticking method or a wafer backside sticking method.
- a reel-shaped adhesive film is cut into individual pieces by cutting or punching, and then bonded to a support member.
- the semiconductor element singulated by the dicing step is joined to the obtained support member with an adhesive film to produce a support member with a semiconductor element.
- Complete the conductor element the individual sticking method requires a special assembling device for cutting out the adhesive film and bonding it to the support member, and has a problem that the assembling cost is higher than the method using silver paste. .
- the wafer backside bonding method first, an adhesive film is attached to a semiconductor wafer, and then bonded to a dicing tape, and then diced in a dicing process to obtain a semiconductor element with an adhesive. Next, the semiconductor element with the adhesive is bonded to a support member, and the semiconductor device is completed through subsequent steps such as heating, curing, and wire bonding.
- the wafer backside bonding method does not require a device to singulate the adhesive film because the semiconductor device with adhesive is bonded to the support member, and there is no conventional silver paste assembly device as it is. Or, it can be used by improving a part of the apparatus such as adding a hot plate. Therefore, the wafer backside sticking method is attracting attention as a method of keeping the assembly cost relatively low among the assembling methods using the film adhesive.
- dicing tapes used are roughly classified into pressure-sensitive type and UV type.
- the pressure-sensitive tape is usually obtained by applying an adhesive to a polychlorinated vinyl or polyolefin base film.
- This dicing tape needs to have a sufficiently high adhesive force so that each element does not scatter when the dicing saw rotates when it is cut.
- the dicing tape needs to have a low adhesive strength so that an adhesive does not adhere to each element at the time of pickup and that the element can be picked up without damaging the element.
- this dicing tape must satisfy the conflicting performance depending on the process.
- a wide variety of adhesive sheets with various adhesive strengths that match the element size and processing conditions are available with a reduced tolerance of adhesive strength. , For each process. In this case, it is necessary to secure inventory of many types, and inventory management becomes complicated. In addition, it is necessary to switch the adhesive sheet for each process.
- a dicing tape which is called a UV type, has a high adhesive strength during dicing, and is irradiated with ultraviolet light (UV) to reduce the adhesive strength before picking up, thereby responding to the above conflicting demands.
- UV ultraviolet light
- Patent Document 1 Japanese Patent No. 1987034
- Patent Document 2 JP-A-8-239636
- Patent Document 3 JP-A-10-8001
- Patent Document 4 JP 2002-212522 A
- Patent Document 5 JP 2004-43760 A
- the adhesive sheet as described in Patent Documents 1 and 2 has a high heat resistance after assembling a semiconductor package in which there are no cured products exhibiting excellent heat resistance. There was room for improvement in terms of reliability.
- the adhesive sheets described in Patent Literatures 1 to 3 contain a heat-active latent epoxy resin curing agent in order to improve storage stability.
- the curing agent is hygroscopic, the curing of the adhesive sheet is accelerated by the humidity of the surrounding atmosphere, and as a result, the pot life is shortened.
- the adhesive sheets described in Patent Documents 3 to 5 include various photoreactive monomers for the purpose of curing the adhesive layer by light irradiation and reducing the adhesive force with the semiconductor wafer. Is used.
- the photoreactive monomer has low heat resistance after irradiation with ultraviolet light, there is room for improvement in adhesive strength when heated (adhesive strength when heated) and reflow resistance.
- the conventional adhesive sheet contributes to simplifying the semiconductor device manufacturing process, severe wet heat conditions (for example, 85 ° C., 85% Even after IR reflow after 168 hours (RH, 168 hours), it is still insufficient to maintain sufficient adhesiveness and show good riff resistance.
- the present invention shows a function as a dicing tape in the dicing step sufficiently effectively, and provides a bonding step in which the connection reliability between the semiconductor element and the supporting member is sufficiently excellent in the bonding step. It is intended to provide a wearing sheet. Further, the present invention provides a pressure-sensitive adhesive sheet having heat resistance and moisture resistance required when a semiconductor element having a large difference in thermal expansion coefficient is mounted on a semiconductor element mounting support member, and having excellent workability. It is intended to provide. Another object of the present invention is to provide a manufacturing method capable of simplifying a manufacturing process of a semiconductor device.
- the present invention relates to the following.
- the high molecular weight component containing a functional group and having a weight average molecular weight of 100,000 or more contains a repeating unit containing an epoxy group in an amount of 0.5 to 0.5 to the total amount of the high molecular weight component.
- the above adhesive sheet which is a (meth) acrylic copolymer containing 6% by mass.
- a semiconductor device provided with a member obtained by bonding a semiconductor element and a semiconductor mounting support member using the above-mentioned adhesive sheet.
- the photocurable pressure-sensitive adhesive sheet of the present invention has the above-described structure, and is excellent in room-temperature sticking properties, dicing properties, and reflow crack resistance. It can be suitably used as a coloring resin.
- FIG. 1 is a schematic sectional view showing an adhesive sheet of the present invention.
- FIG. 2 is a plan view showing an example of the adhesive sheet of the present invention.
- FIG. 3 is a sectional view taken along line XX in FIG. 2 (b).
- FIG. 4 is a schematic cross-sectional view showing an example of a layer configuration according to the adhesive sheet of the present invention.
- FIG. 5 is a schematic sectional view showing a method for measuring a contact angle.
- FIG. 6 is a schematic diagram showing a method of measuring an elastic modulus and a graph showing a method of defining yield extension.
- FIG. 7 is a schematic cross-sectional view showing a state in which the adhesive sheet of the present invention is laminated on a wafer.
- FIG. 8 is a perspective view showing a 90 ° peel strength measuring method and a schematic sectional view thereof.
- FIG. 9 is a schematic sectional view showing a tack load measuring method.
- FIG. 10 is a schematic cross-sectional view showing an example of a usage pattern according to the adhesive sheet of the present invention. Explanation of symbols
- the adhesive sheet 1 of the present invention has a structure in which an adhesive layer 3 is provided on a light-transmissive supporting substrate 2 as shown in FIG.
- a protective film 4 of an adhesive layer may be laminated.
- FIG. 2 is a plan view showing an example of the adhesive sheet of the present invention.
- An adhesive layer may be provided on the entire support substrate as shown in FIG. 2 (a), or the adhesive layer may be previously applied to the semiconductor as shown in FIG. 2 (b). It may be processed into the shape of a wafer (Fig. 2), and the protective film is shown.
- FIG. 3 is a sectional view taken along line XX in FIG. 2B.
- a plurality of adhesive layers 3 are preliminarily cut out (precut) into a shape slightly larger than a semiconductor wafer, and are laminated on a long supporting substrate 2.
- the peripheral portion 5 is provided with a thickness adjustment provided to prevent only the central portion of the sheet where the adhesive layer is present from swelling when such a long adhesive sheet is rolled up around a mouth or the like. Department.
- the thickness adjusting section may be made of the same material as the adhesive layer 3, or may be formed by laminating a very thin layer on the adhesive layer 3 or by using a completely different material.
- the width of the adhesive sheet is not particularly limited as long as a semiconductor wafer can be attached thereto.
- this adhesive sheet Is preferably 1 to 10 cm, preferably 3 to 8 cm wider than the size of an 8-inch wafer or a 12-inch wafer.
- the length of the adhesive sheet can be freely set by a dicing device or the like. However, if the length of the adhesive sheet is too short, the replacement becomes complicated, and if it is too long, the adhesive sheet at the center of the roll is tightened, and the thickness and shape may be deformed. Therefore, the length of the adhesive sheet is usually preferably 10 m to 200 m, more preferably about 30 to 70 m.
- the adhesive layer include (A) a high molecular weight component containing a functional group and having a weight average molecular weight of 100,000 or more, (B) an epoxy resin, (C) a phenolic epoxy resin curing agent, (D) a photoreactive monomer having a Tg of 250 ° C or more of the cured product obtained by ultraviolet irradiation, and (E) a base and radical by irradiation with ultraviolet light having a wavelength of 200 to 450 nm.
- A a high molecular weight component containing a functional group and having a weight average molecular weight of 100,000 or more
- B an epoxy resin
- C a phenolic epoxy resin curing agent
- D a photoreactive monomer having a Tg of 250 ° C or more of the cured product obtained by ultraviolet irradiation
- E a base and radical by irradiation with ultraviolet light having a wavelength of 200 to 450 nm.
- each component is referred to as (A) a high molecular weight component, (B) an epoxy resin, (C) an epoxy resin curing agent, (D) a photoreactive monomer and (E) a photoinitiator, or simply (A) component, (B) component, (C) component, (D) component and (E) component may be abbreviated.
- (3) a film having both reactivity and storage stability can be obtained. That is, in the presence of (C) an epoxy resin curing agent and (D) a photoreactive monomer, (E) a photoinitiator that generates a base and a radical by irradiation with ultraviolet light having a wavelength of 200 to 450 nm is used. It is considered that the epoxy resin and the photo-reactive monomer hardly react in the state where they do not hit, and the storage stability is excellent. On the other hand, irradiation with light (D) accelerates the photoreaction of the photoreactive monomer and generates a curing accelerator for the epoxy resin. Think available.
- epoxy group such as glycidyl group, atalyloyl group, methacryloyl group, carboxyl group, and hydroxyl group from the viewpoint of improving adhesion.
- those containing a functional group such as an episulfide group are preferred.
- a glycidyl group is preferred from the viewpoint of crosslinkability.
- the component (A) is a glycidyl group-containing (meth) copolymerized using glycidyl atalylate or glycidyl metharylate as a raw material monomer and having a weight average molecular weight of 100,000 or more.
- An acrylic copolymer can be used.
- the component (A) is preferably incompatible with the epoxy resin. However, since the compatibility is not determined only by the characteristics of the (A) high molecular weight component, a combination in which both are not compatible is selected.
- the glycidyl group-containing (meth) acrylic copolymer is a phrase indicating both a glycidyl group-containing acryl copolymer and a glycidyl group-containing methacrylic copolymer.
- a copolymer for example, a (meth) acryl ester copolymer, acrylic rubber, or the like can be used, and acrylic rubber is more preferable.
- Acrylic rubber is a rubber containing an acrylate as a main component, and is a rubber mainly composed of a copolymer such as butyl acrylate or acrylonitrile, or a copolymer with ethyl acrylate or acrylonitrile.
- the copolymer monomer include butyl acrylate, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, acrylonitrile, and the like.
- glycidyl group When a glycidyl group is selected as the functional group, it is preferable to use glycidyl acrylate or glycidyl methacrylate as a copolymer monomer component.
- glycidyl group-containing (meth) acrylic copolymer having a weight-average molecular weight of 100,000 or more can be produced by appropriately selecting the above-mentioned monomarker or a commercially available product (for example, Nagase ChemteX Corporation). HTR-860P-3, HTR-860P-5, etc.) may be used!
- the number of functional groups is important because it affects the crosslink density, and differs depending on the resin used.
- a high molecular weight component is obtained as a copolymer of a plurality of monomers, it is used as a raw material.
- the amount of the functional group-containing monomer is preferably 0.5 to 6.0% by mass based on the total amount of the copolymer.
- the amount of a glycidyl group-containing monomer such as glycidyl atalylate or glycidyl metharylate used as a raw material is a 0.5 to 6.0 mass 0/0 with respect to the total weight of the copolymer and preferably, from 0.5 to 5. more preferable to be 0 mass 0/0, particularly preferably to be 0.8 to 5.0 mass%.
- the amount of the glycidyl group-containing monomer is within this range, gentle crosslinking of the glycidyl group occurs, so that the adhesive force can be ensured and the gelling can be prevented. Further, since it becomes incompatible with the epoxy resin (B), it has excellent stress relaxation properties.
- a monomer having another functional group incorporated in glycidyl acrylate or glycidyl metharylate may be used.
- the mixing ratio is determined in consideration of the glass transition temperature (hereinafter referred to as “Tg”) of the glycidyl group-containing (meth) acrylic copolymer, and the Tg is preferably ⁇ 10 ° C. or higher. If the Tg is -10 ° C or more, the tackiness of the adhesive layer in the B-stage state becomes appropriate, and there is no problem in handling and properties! /.
- the weight average molecular weight of the high molecular weight component (A) is 100,000 or more, preferably 300,000 to 3,000,000, more preferably 400,000 to 2.5 million, more preferably 500,000 to 200,000. It is particularly preferable that the number is 10,000.
- the weight-average molecular weight refers to a value measured by gel permeation chromatography and converted using a standard polystyrene calibration curve.
- the epoxy resin (B) used in the present invention is not particularly limited as long as it has an adhesive action upon curing.
- an epoxy resin handbook (edited by Shinpo Masanori, Nikkan Kogyo Shimbun) or the like can be used.
- the epoxy resins described can be used widely.
- a bifunctional epoxy resin such as bisphenol A type epoxy, a novolak type epoxy resin such as a phenol novolak type epoxy resin, a cresol novolak type epoxy resin, or the like can be used.
- polyfunctional epoxy resin, glycidylamine type epoxy resin, heterocyclic epoxy resin and alicyclic epoxy resin can be applied.
- the bisphenol A-type epoxy resin Yuka Shell Epoxy Co., Ltd. Epicoat 807, 815, 825, 827, 828, 834, 1001, 1004, 1007, 1009, DER-Der Chemical Co., Ltd. 330, 301, 361, YD8125, YDF8170, etc., manufactured by Toto Danisei Co., Ltd.
- Examples of the phenol novolak type epoxy resin include Epicoat 152, 154 manufactured by Yuka Shell Epoxy Co., Ltd., EPPN-201 manufactured by Nippon Kayaku Co., Ltd., and DEN-438 manufactured by Dow Chemical Company.
- -Crezo-novolak type epoxy resins include EOCN-102S, manufactured by Nippon Daniyaku Co., Ltd.
- Examples of the polyfunctional epoxy resin include Eponl 031S manufactured by Yuka Shell Epoxy Co., Ltd., Araldite 0163 manufactured by Ciba Specialty Chemicals Co., Ltd., and Denasel EX-611, 614, 614B, 622, 512, 521, manufactured by Nagase Kasei Co., Ltd. 421, 411, 321 and the like.
- Amine-type epoxy resins include Epicoat 604 manufactured by Yuka Shell Epoxy Co., Ltd., YH-434 manufactured by Tohto Kasei Co., Ltd., TETRAD-X, TETRAD-C manufactured by Mitsubishi Gas Chemical Co., Ltd., and Sumitomo Iridakumi. ELM-120 manufactured by K.K.
- Examples of the heterocycle-containing epoxy resin include Araldite PT810 manufactured by Ciba Chemical Corporation and ERL4234, 4299, 4221, 4206 manufactured by UCC. These epoxy resins can be used alone or in combination of two or more.
- the amount of the epoxy resin (B) used in the present invention is (A) a weight average molecular weight containing a functional group of 10 The amount is preferably 5 to 250 parts by weight based on 100 parts by weight of the high molecular weight component which is 10,000 or more. (B) When the amount of the epoxy resin used is within this range, the elastic modulus and the suppression of flow during molding can be ensured, and sufficient handling at high temperatures can be obtained. (B) The amount of the epoxy resin used is preferably 10 to: L00 parts by weight is more preferable, and 20 to 50 parts by weight is particularly preferable.
- the epoxy resin (B) is not compatible with the high molecular weight component (A).
- the phenolic epoxy resin curing agent (C) used in the present invention has excellent impact resistance under high temperature and high pressure of the obtained adhesive layer when combined with the epoxy resin, and is subjected to severe heat absorption. Is also effective because sufficient adhesive properties can be maintained.
- Examples of the component (C) include phenol resins such as phenol novolak resin, bisphenol A nopolak resin and cresol novolak resin. More specifically, for example, trade names: Phenolite L F2882, Phenolite LF2822, Phenolite TD-2090, Phenolite TD-2149, Phenolite VH-4150, Phenolite VH4170, manufactured by Dainippon Ink and Chemicals, Inc. These can be used alone or in combination of two or more.
- phenol resins such as phenol novolak resin, bisphenol A nopolak resin and cresol novolak resin. More specifically, for example, trade names: Phenolite L F2882, Phenolite LF2822, Phenolite TD-2090, Phenolite TD-2149, Phenolite VH-4150, Phenolite VH4170, manufactured by Dainippon Ink and Chemicals, Inc. These can be used alone or in combination of two or more.
- the amount of the component (C) used is (B) the phenolic epoxy resin per epoxy group in the epoxy resin.
- the equivalent ratio of the phenolic hydroxyl groups in the resin curing agent is in the range of 0.5 to 1.5, more preferably in the range of 0.8 to 1.2. If the equivalent ratio is too large or too small, the curing (crosslinking) of the resin will be insufficient, the glass transition temperature will not increase, and the moisture resistance and high-temperature electrical properties of the curing agent will be low. Tend to be inferior.
- the pressure-sensitive adhesive sheet of the present invention when a photoreactive monomer having (D) a cured product obtained by irradiation with ultraviolet light having a Tg of 250 ° C or more is used, heat resistance after irradiation with ultraviolet light is high. The adhesive strength during hot and reflow resistance are improved.
- the method for measuring the Tg of the component (D) is as follows. First, a photoinitiator is added to the component (D), and a cured product irradiated with ultraviolet rays is formed into a rectangle having a size of about 5 ⁇ 5 mm to prepare a sample.
- the prepared sample is measured in a compression mode by a thermal analysis system (trade name: EXSTRA6000) manufactured by Seiko Instruments Inc. to determine Tg. If this Tg is 250 ° C or higher, the adhesive layer It has excellent heat resistance and can withstand heat of 250 ° C or more in the reflow crack resistance evaluation. Therefore, the reflow crack resistance of the adhesive layer is good. From this point, the Tg of the cured product of the component (D) is preferably 200 ° C or higher, more preferably 250 ° C or higher. More preferably, the Tg is 260 ° C. or higher for lead-free soldering. If the Tg is too high, the adhesive property of the pressure-sensitive adhesive sheet after irradiation with ultraviolet light tends to be poor at room temperature. Therefore, the upper limit is preferably about 350 ° C.
- component (D) include, for example, pentaerythritol triatalylate, dipentaerythritol hexaatalylate, dipentaerythritol pentaatalylate, trimethylolpropane triatalylate, ethylene oxide isocyanurate-modified trioxide.
- examples include polyfunctional atalylates such as atalylate, ditrimethylolpropanetetraatalylate, and pentaerythritol tetraatalylate. These photoreactive monomers may be used alone or in combination of two or more. Can be used.
- dipentaerythritol hexaatalylate ⁇ dipentaerythritol pentaatalylate and the like are preferable even if they are polyfunctional.
- Specific examples include A-DPH and A-9300 manufactured by Shin-Nakamura-Danigakusha.
- the Tg of the mixture is the Tg when the mixture is measured by the above-described measurement method, and the Tg of each monomer needs to be 250 ° C or higher. Absent.
- the amount of the photoreactive monomer (D) of the present invention in which the cured product obtained by ultraviolet irradiation has a Tg of 250 ° C or more is such that the weight average molecular weight (A) containing a functional group is 100,000 or more. 5 to 100 parts by weight of high molecular weight component: 5 to LOO parts by weight are preferred. If the blending amount is 5 parts by weight or more, the polymerization property of the photoreactive monomer due to the irradiation of ultraviolet rays tends to occur, so that the pickup property tends to be improved.
- the amount of the component (D) used is more preferably 10 to 70 parts by weight, particularly preferably 20 to 50 parts by weight, based on 100 parts by weight of the component (A).
- (E) a photoinitiator that generates a base and a radical upon irradiation with ultraviolet light having a wavelength of 200 to 450 nm is generally called an ⁇ -aminoketone conjugate.
- This The Unagi-Danied product is described, for example, in J. Photopolym. Sci. Technol, Vol. 13, Nol2001, etc., and when irradiated with ultraviolet light, it reacts as in the following formula.
- the aminoketone conjugate does not have a radical before the ultraviolet irradiation, so that the polymerization reaction of the photoreactive monomer does not occur. Also, curing of thermosetting resin is not accelerated due to steric hindrance.
- the ultraviolet irradiation causes dissociation of the a-aminoketone conjugate, and the polymerization of the photoreactive monomer occurs with the generation of radicals.
- the dissociation of the a-aminoketone compound reduces steric hindrance and allows the presence of an activated amine.
- the amine has the effect of accelerating the curing of the thermosetting resin, and thereafter, the effect of the curing is exerted by heating.
- radicals and activated amines are unlikely to be present, so that it is possible to provide a pressure-sensitive adhesive sheet having extremely excellent storage stability at room temperature.
- the curing rate of the photoreactive monomer or epoxy resin changes depending on the structure of the radicals and amines generated by ultraviolet irradiation, so that (E) depends on the type of component (B), component (C) and component (D) used.
- the photobase generator can be determined.
- Examples of the (E) photobase generator include 2-methyl-1 (4 (methylthio) phenyl-2-morpholinopropan-1-one (Irgacure 907, manufactured by Ciba Specialty Chemicals), 2benzyl-1 2 Dimethylamino 1- (4 morpholinophyl) -1-butanone-1-one (Irgacure 369, manufactured by Ciba Specialty Chemicals), hexaryl bisimidazole derivatives (nodrogen atom, alkoxy group, nitro group, cyano group, etc.) May be substituted with a phenyl group), and benzoisoxazolone derivatives.
- the base generator is used as a low molecular compound having a molecular weight of 500 or less.
- Compounds introduced into the main chain and side chains may be used.
- the viewpoint force of adhesiveness and fluidity as a pressure-sensitive adhesive is 1000 to less by weight average molecular weight than LOOOOO, and 5,000 to 30,000.
- the amount of the photobase generator (E) used is based on 100 parts by weight of the high molecular weight component (A) having a functional group-containing weight average molecular weight of 100,000 or more. , 0.1 to 20 parts by weight. If the amount is less than 0.1 part by weight, the reactivity may be poor and a monomer to be polymerized may remain. If the amount is more than 20 parts by weight, reflow resistance may be affected because a large number of low molecular weight components are present in which the increase in molecular weight due to the polymerization reaction is not satisfactory. Therefore, the amount of component (E) used is more preferably 0.5 to 15 parts by weight, and even more preferably 1 to 5 parts by weight.
- a high molecular weight resin compatible with the epoxy resin is added for the purpose of improving flexibility and reflow crack resistance.
- a high molecular weight resin those which are incompatible with the high molecular weight component are preferred from the viewpoint of improving reliability.
- phenoxy resin, high molecular weight epoxy resin, and ultra high molecular weight epoxy resin are preferable. And the like. These can be used alone or in combination of two or more.
- epoxy resin compatible with (A) high molecular weight component is used as epoxy resin, and (F) high molecular weight resin compatible with epoxy resin
- epoxy resin becomes Since it is more easily compatible with the component (F), it may be possible to make the epoxy resin (B) and the high molecular weight component (A) incompatible as a result.
- the amount of the high-molecular-weight resin compatible with the epoxy resin is preferably not more than 40 parts by weight based on 100 parts by weight of the total of the epoxy resin and the phenol-based epoxy resin curing agent. preferable. Within this range, the Tg of the epoxy resin layer can be secured.
- the adhesive layer forming the adhesive sheet of the present invention has an inorganic filler for the purpose of improving the handleability, improving the thermal conductivity, adjusting the melt viscosity and imparting the thixotropic property.
- the inorganic filler include, but are not particularly limited to, aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, calcium silicate, magnesium silicate, calcium oxide, magnesium oxide, aluminum oxide, aluminum oxide.
- examples include aluminum chloride, aluminum borate whiskers, boron nitride, crystalline silica, amorphous silica, and the like, and the shape of the filler is not particularly limited. These fillers can be used alone or in combination of two or more.
- inorganic fillers such as aluminum oxide, aluminum nitride, boron nitride, crystalline silica, and amorphous silica are preferable for improving thermal conductivity.
- inorganic fillers such as aluminum oxide, aluminum nitride, boron nitride, crystalline silica, and amorphous silica are preferable for improving thermal conductivity.
- hydroxide aluminum, hydroxide magnesium, calcium carbonate, magnesium carbonate, calcium silicate, magnesium silicate, calcium oxide Inorganic fillers such as magnesium oxide, aluminum oxide, crystalline silica, and amorphous silica are preferred.
- it is more preferable to use a nano filler to improve the fluidity of the film when heated.
- the amount of the inorganic filler to be used is preferably 1 to 40 parts by weight based on 100 parts by weight of the adhesive layer. If the amount is less than 1 part by weight, there is a tendency that the effect of addition cannot be obtained.If the amount exceeds 40 parts by weight, problems such as an increase in the storage modulus of the adhesive layer, a decrease in adhesiveness, and a decrease in electrical properties due to voids remain. Tends to wake up.
- various kinds of coupling agents can be added to the adhesive layer forming the adhesive sheet of the present invention in order to improve the interfacial bonding between different kinds of materials.
- the coupling agent include silane, titanium, and aluminum.
- the silane coupling agent is not particularly limited.
- the amount of the coupling agent used is, based on (100) 100 parts by weight of a high molecular weight component having a weight average molecular weight of 100,000 or more containing a functional group, from the viewpoint of its effect, heat resistance and cost. It is preferred that the amount be from 0.01 to 10 parts by weight.
- the adhesive layer forming the adhesive sheet of the present invention adsorbs ionic impurities and absorbs it.
- an ion scavenger may be further added.
- Such ion scavengers are not particularly limited.
- they are used as copper damage inhibitors such as triazinethiol conjugates and bisphenol-based reducing agents to prevent copper from ionizing and dissolving.
- Known compounds include inorganic ion adsorbents such as zirconium-based and antimony-bismuth-based magnesium aluminum compounds.
- the amount of the ion scavenger to be used is determined based on (A) 100 parts by weight of a high molecular weight component having a weight average molecular weight of 100,000 or more containing a functional group, from the viewpoints of the effect, heat resistance, cost, and the like of the added mash. On the other hand, 0.1 to 10 parts by weight is preferable.
- the adhesive sheet of the present invention can be obtained by dissolving or dispersing the composition forming the adhesive sheet in a solvent to form a varnish, applying the composition on a base film, heating and removing the solvent.
- the protective film 4 also referred to as a release sheet
- the raw resin composition for the adhesive agent having the above-mentioned component strength is dissolved in an organic solvent or the like.
- the varnished product is coated and dried by a commonly known method such as knife coating, roll coating, spray coating, gravure coating, bar coating, curtain coating, etc.
- the light-transmissive support base material 2 is laminated to obtain the release sheet (protective film), the adhesive layer, and the adhesive sheet 1 composed of the light-transmissive support base material.
- a pressure-sensitive adhesive composition is applied directly on a light-transmitting supporting substrate by the same method, dried, and a protective film is laminated.
- An adhesive sheet that is a permeable support base material can be obtained.
- Examples of the light-transmitting supporting substrate used in the adhesive sheet of the present invention include polytetrafluoroethylene phenol, polyethylene phenol, polypropylene phenol, and polymethyl phenol.
- the light-transmitting supporting substrate used in the adhesive sheet of the present invention has a surface free energy of preferably 20 to 50 mNZm in terms of adhesion between the supporting substrate and the adhesive layer. More preferably, it is 30 to 45 mNZm. If the surface free energy is less than 20 mNZm, the adhesive force at the interface between the light-transmissive support base material and the adhesive layer becomes low, and the protective film is peeled off. When trying to apply force S, the adhesive layer may also partially peel off the supporting substrate.
- the surface free energy was measured by measuring the liquid sample 6 (water, methylene iodide) with respect to the measurement sample 7 using a CA-Z model manufactured by Kyowa Interface Chemical Co., Ltd. It is a value calculated by the following equations (1) to (3) from the measured value of the contact angle ⁇ (see Fig. 5).
- ⁇ 1 is the contact angle with water (deg)
- ⁇ 2 is the contact angle with methylene iodide (deg)
- ⁇ is the surface free energy
- ⁇ d is the dispersion component of the surface free energy
- ⁇ ⁇ is the surface free It is the polar component of energy.
- the light-transmitting supporting substrate used for the adhesive sheet of the present invention has an elastic modulus of 10 at 25 ° C. in terms of pickup properties, dicing properties, and transferability. ⁇ 2000MPa is preferred! / ,. It tends to be difficult to maintain the performance as a supporting substrate with a value smaller than lOMPa! /, and if it exceeds 2,000 MPa, the transfer tends to be difficult, which may affect the pickup performance after that .
- the elastic modulus is particularly preferably from 100 to 500 MPa, more preferably from 50 to 1000 MPa from the viewpoint of dicing properties.
- the elastic modulus at 25 ° C. of the light-transmitting supporting substrate is determined as follows. First, using an Orientec Co., Ltd.
- yield elongation is a value representing the elongation at the yield point expressed as a percentage in the tensile properties.
- the value of the yield elongation is preferably 5 to 100% or more, more preferably 20 to 80% or more. If the yield elongation is less than 5%, the pickup tends to fail.
- the value of the elongation (point D) corresponding to the first peak value of stress (point C) in the measurement results of the above-mentioned elastic modulus measurement (FIG. 6 (b)) is used as the light transmitting support.
- the yield elongation of the substrate is used as the light transmitting support.
- the linear expansion coefficient of the supporting substrate preferably satisfies the condition represented by the following formula (a) from the viewpoint of warpage and the like.
- (Transfer temperature (Tl) at the time of preparing the adhesive sheet) X Linear expansion coefficient at the transfer temperature ( ⁇ 1))-(Normal temperature ( ⁇ 2) X Linear expansion coefficient at the normal temperature ( ⁇ 2)) ⁇ 7000 (unit: ppm) (a) If the left side of equation (a) exceeds 7000 ppm, the warpage becomes too large when used as a sheet product, and the handleability deteriorates.
- the left side of the above formula (a) is particularly preferably 3,000 ppm or less, more preferably 5,000 ppm or less.
- the coefficient of linear expansion ⁇ 1 and ⁇ 2 (unit: ppmZ ° C) are determined by a thermal analysis system (trade name: EXSTRA6000) manufactured by Seiko Instruments Ment Co., Ltd. Determined by measuring in a tensile mode at a temperature rising rate of 10 ° C.Zmin and a measuring temperature of 20 ° C. to 180 ° C. “Normal temperature” in equation (a) is 25. C is shown.
- the solvent for forming the varnish is not particularly limited as long as it is an organic solvent.
- the solvent can be determined in consideration of the volatility at the time of producing the 1S film from the boiling point.
- solvents having a relatively low boiling point such as methanol, ethanol, 2-methoxyethanol, 2-ethoxyethanol, 2-butoxyethanol, methylethylketone, acetone, methylisobutylketone, toluene, and xylene Is preferable because the curing of the film hardly progresses during film production.
- a solvent having a relatively high boiling point such as dimethylacetamide, dimethylformamide, N-methylpyrrolidone, cyclohexanone and the like. These solvents can be used alone or in combination of two or more.
- a grinder, a three-roll mill, a ball mill, a bead mill, or the like in consideration of the dispersibility of the inorganic filler. They can be used in combination.
- the mixing time can be shortened by mixing the inorganic filler and the low-molecular-weight raw material in advance and then blending the high-molecular-weight raw material. After the varnish is formed, bubbles in the varnish can be removed by vacuum degassing or the like.
- the thickness of the adhesive layer is not particularly limited, but is preferably 3-200 ⁇ m. If the thickness is less than 3 ⁇ m, the stress relaxation effect tends to be poor. If the thickness is more than 200 m, it is not economical and the demand for miniaturization of semiconductor devices cannot be met.
- the thickness of the supporting substrate is not particularly limited, but is preferably 5-250 ⁇ m. If the thickness is less than 5 ⁇ m, the support substrate may be cut when a cut is made into the support substrate during dicing, and if the thickness is more than 250 m, it is not economical and is not preferable.
- the total thickness of the adhesive layer and the supporting substrate is usually about 10 to 250 ⁇ m. Workability is good if the support base is set to be the same as or slightly thicker than the adhesive layer. Specific thickness combinations include 5/25, 10/30, 10/50, 25/50, 50/50, 50Z75, etc. It can be determined as appropriate depending on the conditions and equipment used.
- the pressure-sensitive adhesive sheet of the present invention has a separately prepared pressure-sensitive adhesive on the side of the pressure-sensitive adhesive layer of the sticky pressure-sensitive adhesive sheet that improves fluidity during heating. Two or more sheets can be attached. In this case, bonding conditions are required so that peeling of the adhesive layers does not occur.
- the adhesive sheet having the above-described configuration When the adhesive sheet having the above-described configuration is irradiated with ultraviolet light, the adhesive force between the support substrate and the adhesive layer is greatly reduced after the ultraviolet irradiation, and the adhesive layer is easily held on the semiconductor element.
- the pressure-sensitive adhesive sheet can be picked up from the supporting base material as it is.
- a 90 ° peel adhesive strength measurement (at a measurement temperature of 25 ° C.) can be performed.
- the 90 ° peel adhesive strength is measured as follows. First, as shown in FIG. 8 (a), after laminating the adhesive sheet 1 on the wafer A, a cut is made to a width of 1 cm, the support base material 2 is cut, and ultraviolet rays are irradiated. Then, as shown in Fig. 8 (b), the 90 ° A 90 ° peel adhesive strength is measured at a pulling speed of 300 mZmin.
- the 90 ° peel adhesive strength measured in this manner is preferably 20 NZm or less, and more preferably IONZm or less, from the viewpoint of pickup properties.
- a tack load measurement may be performed (Fig. 9).
- the tack load is preferably from 5 to 400 gf, more preferably from 10 to 200 gf, from the viewpoint of handling and room-temperature laminability.
- Measurement of tack load in the present invention uses RHESCA Co. Tatsukingu tester measurement conditions by the method of mounting the serial to JISZ0237- 1991: diameter 5. 1 mm phi of the probe 17, peel speed LOmmZ sec, contact load 100GfZcm 2 It is performed in an environment of 25 ° C with a contact time Is.
- the adhesive sheet of the present invention is irradiated with ultraviolet light (UV) to cause the adhesive sheet having ultraviolet polymerizability to polymerize and cure.
- UV ultraviolet light
- the purpose is to reduce the adhesive force at the material interface to enable pickup of a semiconductor element.
- Fig. 10 (a) shows a pressure-sensitive adhesive sheet 1 having a support base material 2 and a pressure-sensitive adhesive layer 3 formed thereon and having a shape similar to that of the wafer and having a slightly larger area than the wafer. Is shown.
- a semiconductor wafer 9 to be diced is stuck on the three adhesive layers of the adhesive sheet 1 at room temperature or while heating (FIG. 10B), and dicing is performed by the dicing machine 10. Then, washing and drying steps are added as necessary (FIG. 10 (c)). At this time, since the semiconductor element is sufficiently adhered and held on the adhesive sheet, the semiconductor element does not fall off during each of the above steps.
- the adhesive sheet is irradiated with radiation, and the adhesive sheet having the property of being polymerized by the radiation is polymerized and cured (FIG. 10 (d)).
- the radiation include an ultraviolet ray, an electron beam, and an infrared ray.
- FIG. 10 (d) shows an example using ultraviolet light.
- UV irradiation of the adhesive sheet is carried from the adhesive sheet surface having ultraviolet polymerizable, irradiation of the irradiation dose force illuminance up and down by the composition of the adhesive sheet is usually 3 ⁇ : LOOmW Zcm 2 approximately by The irradiation dose is usually 80 to: LOOOmJ, and the irradiation dose is such that the photoreactive monomer is almost polymerized.
- the support base material 2 of the adhesive sheet needs to transmit ultraviolet rays. That is, in the present invention, the "light-transmitting supporting substrate" It refers to the support substrate that transmits the radiation used in the step.
- the semiconductor elements 91, 92 and 93 obtained by dicing are picked up by the suction collet 11 together with the UV-cured adhesive layer (FIG. 10 (e)), and the semiconductor element mounting support member is picked up. 12 is pressed while heating at room temperature or at 40 to 150 ° C (Fig. 10 (f)) and heated.
- the adhesive layer develops an adhesive force that can withstand reliability, and the bonding between the semiconductor element 91 and the supporting member 12 for mounting the semiconductor element is completed.
- the semiconductor device is usually provided with a wire bond 15 in the subsequent step of mounting (mounting), a step of sealing with a sealing material 16, a solder ball 14, and an external substrate (mother board). Electrical connection with the same adhesive board) .
- the heat history goes through one or more times in the middle, and the adhesive layer is further heated and cured using the heat history. You can also.
- HTR-860- P3 (trade name of Teikoku Chemical Sangyo Co., Ltd., acrylic rubber containing glycidyl group, molecular weight 1,000,000, Tg-7 ° C) 100 parts by weight, YDCN-703 (trade name of Toto Kasei Co., Ltd., o Cresol novolac type epoxy resin, epoxy equivalent 210) 5.4 parts by weight, YDF-81 70C (trade name, manufactured by Toto Kasei Co., Ltd., bisphenol F type epoxy resin, epoxy equivalent 157) 16.2 parts by weight, Pryofen LF2882 (trade name, manufactured by Dainippon Ink and Chemicals, Inc., bisphenol A novolak resin) 15.3 parts by weight, NUCA-189 (trade name, manufactured by Nippon Carker, gamma mercaptopropyltrimethoxysilane) 0.1 part by weight, ⁇ 11 188-1160 (trade name, manufactured by Nihon-UKAR Co., Ltd., ⁇ -ureido
- Example 1 The same operation as in Example 1 was performed except that the amount of the photoreactive monomer (A-DPH) was changed to 50 parts by weight in the mixing ratio of the adhesive component.
- A-DPH photoreactive monomer
- Example 1 The same operation as in Example 1 was performed except that no silane coupling agent was added at the time of mixing the adhesive component.
- Example 2 The same operation as in Example 1 was performed except that the supporting substrate was changed to DDD (trade name) manufactured by Gunze in place of POF-120A.
- DDD trade name
- HTR-860-P3 of the adhesive component was changed to HTR-860-P5 (trade name of Nagase ChemteX Corporation, glycidyl group-containing acrylic rubber, molecular weight 800,000, Tg-10 ° C)
- HTR-860-P5 trade name of Nagase ChemteX Corporation, glycidyl group-containing acrylic rubber, molecular weight 800,000, Tg-10 ° C
- Irgacure 369 was replaced by Irgacure 907 (trade name, manufactured by Ciba Specialty Chemicals Co., Ltd., 2-methyl-1 (4- (methylthio) phenyl 2-morpholinopropane 1 on: I 907).
- Irgacure 907 trade name, manufactured by Ciba Specialty Chemicals Co., Ltd., 2-methyl-1 (4- (methylthio) phenyl 2-morpholinopropane 1 on: I 907.
- the same operation as in Example 1 was performed except that the weight was changed to 1.5 parts by weight.
- the adhesive component A—DPH is replaced with A—9300 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.
- A—9300 trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.
- the same operation as in Example 1 was performed, except that 30 parts by weight of isocyanuric acid triatalylate) was used.
- Example 2 Same as Example 1 except that the supporting substrate was FHF-100 (trade name, manufactured by Thermo Co., Ltd., low density polyethylene terephthalate Z-butyl acetate Z low density polyethylene terephthalate three-layer film) instead of POF-120A The operation was performed.
- FHF-100 trade name, manufactured by Thermo Co., Ltd., low density polyethylene terephthalate Z-butyl acetate Z low density polyethylene terephthalate three-layer film
- A-DPH a photoreactive monomer of the adhesive component
- BPE-200 trade name, manufactured by Shin-Nakamura-Danigaku Kogyo Co., Ltd., 2.2-bis [4- (methacryloxy 'diethoxy) phenyl] propane
- Example 1 Example 1 was repeated except that the photoreactive monomer A-DPH of the adhesive component was replaced with 30 parts by weight of FA-321M (trade name, manufactured by Hitachi Chemical Co., Ltd., ethylene oxide-modified bisphenol A dimethacrylate). The same operation as described above was performed.
- FA-321M trade name, manufactured by Hitachi Chemical Co., Ltd., ethylene oxide-modified bisphenol A dimethacrylate
- Example 1 The same operation as in Example 1 was performed except that the photoreactive monomer of the adhesive component was not added.
- Example 1 The same operation as in Example 1 was performed except that the photoinitiator was not added in the composition of the adhesive component.
- Tables 1 and 2 show compositions and the like according to the above Examples and Comparative Examples.
- the adhesive sheet was stuck on a 280 m thick silicon wafer placed on a wafer mounter, and the room temperature sticking property was evaluated. "A” indicates that the sticking property is good.
- the adhesive sheet was stuck on a silicon wafer having a thickness of 280 m, and the silicon wafer with the adhesive sheet was placed on a dicing apparatus. Next, the semiconductor wafer is fixed on a dicing apparatus, and diced into a rectangle of 3.2 mm X 3.2 mm at a speed of lOmmZsec. Evaluation was made by measuring the number of semiconductor chips that peeled off on the adhesive sheet due to low adhesive strength.
- a semiconductor wafer is fixed on a dicing machine, diced into a 3.2 mm X 3.2 mm rectangle at a speed of lOmmZsec, and then irradiated with ultraviolet light, and the semiconductor chip with the adhesive layer is picked up by a light-transmitting supporting substrate.
- die bonding was performed on the organic substrate (PSR-4000, SR-AUS 5, 0.2mm thickness) at 180 ° C, 2MPa, 30sec, and post-curing treatment was performed at 175 ° C, 5 hours, and evaluated.
- a sample was obtained. After holding the evaluation sample on a hot plate at 265 ° C for 30 seconds, the shear adhesive strength between the chip and the organic substrate was measured.
- the semiconductor chip is die-bonded to the wiring board under the conditions of 100 ° C, 200 gf, and 3 seconds, and then a sealant (Hitachi Chemical: CEL-9700-HF10) is applied. After being molded into a predetermined shape by using it, it was heated and cured at 175 ° C for 5 hours to form a package. After storing the cured package for 7 days at 85 ° C and 60% RH, pass the package through an IR reflow oven set at a maximum surface temperature of 260 ° C and maintained at this temperature for 20 seconds. The cracks in the nodules / cage were visually observed and observed with an ultrasonic microscope. The number of cracks generated for 10 packages at this time was recorded.
- Examples 1 to 9 show that the room temperature bonding property, chip scattering after dicing, pickup property, and force satisfying reflow crack resistance were obtained. It can be seen that the cured product obtained by UV irradiation has a low Tg, and thus has poor reflow resistance characteristics. Comparative Example 3 was poor in pick-up properties after irradiation with ultraviolet light because no photoreactive monomer was present, and Comparative Example 4 was poor in pick-up properties after irradiation with ultraviolet light because no photoinitiator was present. It can be seen that the photoreactive monomer in the reaction is inferior in the resistance to riff mouth.
- the photocurable pressure-sensitive adhesive sheet of the present invention has the above-described structure and is excellent in room-temperature sticking properties, dicing properties, and reflow crack resistance, and therefore has a sticking property for fixing an electronic material. It can be suitably used as a coloring resin.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US11/596,923 US7578891B2 (en) | 2004-05-18 | 2005-05-17 | Adhesive bonding sheet, semiconductor device using the same, and method for manufacturing such semiconductor device |
JP2006513607A JPWO2005112091A1 (ja) | 2004-05-18 | 2005-05-17 | 粘接着シート並びにそれを用いた半導体装置及びその製造方法 |
US12/534,241 US8003207B2 (en) | 2004-05-18 | 2009-08-03 | Adhesive bonding sheet, semiconductor device using same, and method for manufacturing such semiconductor device |
US12/534,253 US8012580B2 (en) | 2004-05-18 | 2009-08-03 | Adhesive bonding sheet, semiconductor device using the same, and method for manufacturing such semiconductor device |
US13/194,633 US20110281399A1 (en) | 2004-05-18 | 2011-07-29 | Adhesive bonding sheet, semiconductor device using same, and method for manufacturing such semiconductor device |
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JP2004-147973 | 2004-05-18 | ||
JP2004147973 | 2004-05-18 |
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US12/534,253 Division US8012580B2 (en) | 2004-05-18 | 2009-08-03 | Adhesive bonding sheet, semiconductor device using the same, and method for manufacturing such semiconductor device |
US12/534,241 Division US8003207B2 (en) | 2004-05-18 | 2009-08-03 | Adhesive bonding sheet, semiconductor device using same, and method for manufacturing such semiconductor device |
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CN (3) | CN101451053A (ja) |
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- 2005-05-17 KR KR1020087009805A patent/KR20080042940A/ko active Search and Examination
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- 2005-05-17 KR KR1020087009806A patent/KR20080042941A/ko active Application Filing
- 2005-05-17 KR KR1020097012505A patent/KR20090077860A/ko active Search and Examination
- 2005-05-17 TW TW094115861A patent/TWI387631B/zh not_active IP Right Cessation
- 2005-05-17 WO PCT/JP2005/008971 patent/WO2005112091A1/ja active Application Filing
- 2005-05-17 CN CNA2009100018150A patent/CN101451053A/zh active Pending
- 2005-05-17 US US11/596,923 patent/US7578891B2/en not_active Expired - Fee Related
- 2005-05-17 CN CNB200580015896XA patent/CN100463115C/zh not_active Expired - Fee Related
- 2005-05-17 JP JP2006513607A patent/JPWO2005112091A1/ja active Pending
- 2005-05-17 KR KR1020067024821A patent/KR100865412B1/ko not_active IP Right Cessation
- 2005-05-17 CN CNA2009100018165A patent/CN101451054A/zh active Pending
- 2005-05-18 MY MYPI20052250A patent/MY142524A/en unknown
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2009
- 2009-08-03 US US12/534,253 patent/US8012580B2/en not_active Expired - Fee Related
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- 2011-07-29 US US13/194,633 patent/US20110281399A1/en not_active Abandoned
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JP2007258425A (ja) * | 2006-03-23 | 2007-10-04 | Sumitomo Bakelite Co Ltd | 半導体用接着剤、これを用いた半導体装置および半導体装置の製造方法 |
JP2007258508A (ja) * | 2006-03-24 | 2007-10-04 | Sumitomo Bakelite Co Ltd | 半導体用接着剤、これを用いた半導体装置および半導体装置の製造方法 |
JP4905352B2 (ja) * | 2006-05-09 | 2012-03-28 | 日立化成工業株式会社 | 接着シート、これを用いた回路部材の接続構造及び半導体装置 |
JP2011256391A (ja) * | 2006-05-09 | 2011-12-22 | Hitachi Chem Co Ltd | 回路接続用接着シート及びこれを用いた回路接続材料の基板への固定方法 |
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WO2008114696A1 (ja) * | 2007-03-16 | 2008-09-25 | Hitachi Chemical Company, Ltd. | 光導波路用接着剤組成物、これを用いた光導波路用接着フィルムおよび光導波路用粘接着シート、ならびにこれらを用いた光学装置 |
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US8200059B2 (en) | 2007-03-16 | 2012-06-12 | Hitachi Chemical Company, Ltd. | Adhesive composition for optical waveguide, adhesive film for optical waveguide and adhesive sheet for optical waveguide each using the same, and optical device using any of them |
JP2009124096A (ja) * | 2007-10-23 | 2009-06-04 | Hitachi Chem Co Ltd | 粘接着シート |
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JP2011171712A (ja) * | 2010-01-21 | 2011-09-01 | Hitachi Chem Co Ltd | 半導体ウエハ加工用接着テープ、半導体ウエハ加工用接着テープ付き半導体ウエハの製造方法、半導体装置の製造方法及び半導体装置 |
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JP2015101604A (ja) * | 2013-11-21 | 2015-06-04 | 東京応化工業株式会社 | 感エネルギー性組成物 |
JP2015211079A (ja) * | 2014-04-24 | 2015-11-24 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP2016216571A (ja) * | 2015-05-18 | 2016-12-22 | 日立化成株式会社 | 研削された基材の製造方法、並びにこれに用いられるフィルム状粘着剤及び積層体 |
WO2020218154A1 (ja) * | 2019-04-22 | 2020-10-29 | 日東電工株式会社 | 粘着シートおよびその利用 |
Also Published As
Publication number | Publication date |
---|---|
KR100865412B1 (ko) | 2008-10-24 |
US20100003513A1 (en) | 2010-01-07 |
CN101451053A (zh) | 2009-06-10 |
KR20090077860A (ko) | 2009-07-15 |
KR20100060002A (ko) | 2010-06-04 |
US7578891B2 (en) | 2009-08-25 |
CN101451054A (zh) | 2009-06-10 |
KR20070011540A (ko) | 2007-01-24 |
US8012580B2 (en) | 2011-09-06 |
KR20080042941A (ko) | 2008-05-15 |
MY142524A (en) | 2010-12-15 |
US20110281399A1 (en) | 2011-11-17 |
CN100463115C (zh) | 2009-02-18 |
KR20080042940A (ko) | 2008-05-15 |
US20070241436A1 (en) | 2007-10-18 |
TWI387631B (zh) | 2013-03-01 |
US8003207B2 (en) | 2011-08-23 |
US20100003512A1 (en) | 2010-01-07 |
CN1954411A (zh) | 2007-04-25 |
KR100991940B1 (ko) | 2010-11-04 |
JPWO2005112091A1 (ja) | 2008-03-27 |
TW200538528A (en) | 2005-12-01 |
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