WO2005036633A1 - 電子部材の製造方法、及び、接着材付icチップ - Google Patents
電子部材の製造方法、及び、接着材付icチップ Download PDFInfo
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- WO2005036633A1 WO2005036633A1 PCT/JP2004/014865 JP2004014865W WO2005036633A1 WO 2005036633 A1 WO2005036633 A1 WO 2005036633A1 JP 2004014865 W JP2004014865 W JP 2004014865W WO 2005036633 A1 WO2005036633 A1 WO 2005036633A1
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- Prior art keywords
- adhesive
- chip
- thermosetting
- wafer
- film
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Classifications
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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Definitions
- the present invention relates to a method for producing an electronic member to be bonded to a carrier by preparing an IC chip with an adhesive from a wafer, and to an IC chip with an adhesive.
- thermosetting adhesive 8 is bonded to the wafer 1. Then, in order to increase the adhesive force between the wafer 1 and the thermosetting adhesive 8, the thermosetting adhesive 8 is semi-cured at 150 ° C for 30 seconds. On the opposite side of the thermosetting adhesive 8, an ultraviolet-curing adhesive 9 and a dicing film 4 are attached in advance.
- the wafer 1 and the thermosetting adhesive 8 are cut along the dicing line of the ueno 1 by a dicing tool, and cut into IC chips 6 by dicing grooves 5. To separate.
- the ultraviolet curing adhesive 9 is irradiated with ultraviolet light by passing through the Daishinda film 4, and the thermosetting adhesive 8 and the ultraviolet curing adhesive are used. Decrease the adhesive force with 9.
- the IC chip 6 with the thermosetting adhesive 8 is picked up, pressed against the carrier 7 for about 1 second at 150 ° C, and then temporarily bonded. Harden for about 2 hours at ° C, and bond IC chip 6 and carrier 7 together.
- thermosetting adhesive is further provided on the ultraviolet curing adhesive of the dicing film coated with the ultraviolet curing adhesive. Then, the thermosetting adhesive is attached to the wafer and then diced to obtain
- an adhesive IC chip in which a UV-curable adhesive is attached to a Daishinda film (for example, see Patent Document 1).
- a thermosetting adhesive is attached to the UV curing adhesive of Daishinda Film, which is coated with an ultraviolet curing adhesive.
- An adhesive IC chip obtained by attaching a thermosetting adhesive to a previously diced wafer and dicing again (For example, see Patent Document 2).
- thermosetting adhesive is attached to the back surface of the wafer after the pre-process of forming the semiconductor elements, and the UV curable adhesive is applied to the surface of the die cinda film.
- the dicing film is attached to a thermosetting wafer with an adhesive, and the wafer and the adhesive are diced by a dicing machine to complete the process.
- An ultraviolet curing adhesive 26 is provided on the Daishinda film 24, and a thermosetting adhesive 27 and an IC chip 21 separated into an IC size by a separation groove 25 are adhered thereon.
- ultraviolet light is irradiated from the surface of the Daishinda film to reduce the adhesive strength of the ultraviolet ray curable adhesive 26.
- the IC chip 21 is picked up from the IC chip surface by vacuum tweezers or the like, and the adhesive force is reduced.
- the adhesive is peeled off from the interface between the thermosetting adhesive 27 and the ultraviolet curing adhesive 26 and the thermosetting adhesive is removed.
- the IC chip 21 with 27 is picked up and transferred to a carrier such as a circuit board.
- thermosetting adhesive when the thickness of the wafer is reduced in FIG. 7, when the thermosetting adhesive is attached to the wafer, the stress of the thermosetting adhesive is applied to the wafer.
- This is a structure proposed to solve problems such as large warpage and inability to perform dicing. Separation grooves with a depth of 10 to 80% of the required wafer thickness are formed from the back surface of the wafer by dicing on the wafer that has completed the pre-process of semiconductor device formation. Thereafter, the back surface of the wafer is back ground to the required thickness.
- an ultraviolet-curing adhesive is applied to the surface of the die cinda film, and a material with a thermosetting adhesive is adhered thereon, and the wafer and the thermosetting adhesive are bonded by a dicing machine.
- the adhesive is completed by dicing with a width smaller than the separation groove.
- a UV curing adhesive 26 is provided on the Daishinda film 24, and a thermosetting adhesive 27 and an IC chip 21 separated into an IC size by a second separation groove 29 are provided thereon. Is stuck.
- the IC chip 21 is separated by the first separation groove 28 and the second separation groove 29 which have been diced in advance.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2-248064
- Patent Document 2 JP 2001-156028 A
- the above-described method for manufacturing an electronic member has the following problems. That is, in order to reliably and easily peel off the die-sinda film and the thermosetting adhesive after dicing.
- the above-described IC chip with an adhesive has the following problems. That is, since the dicing film is made of an ultraviolet-curable adhesive, there is a problem that it becomes expensive. In addition, there is a problem that the process becomes complicated with a thin wafer.
- the present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an inexpensive and simple manufacturing method for an electronic member, and an inexpensive and simple manufacturing method for an adhesive. To provide IC chips.
- a first method for manufacturing an electronic member according to the present invention includes a method of bonding an adhesive to a thermosetting adhesive provided on a base film and bonding a wafer to the thermosetting adhesive.
- the thermosetting adhesive is attached.
- the viscosity is less than 20, OOOPa's.
- a second method of manufacturing an electronic member according to the present invention includes: an adhesive bonding step of bonding a thermosetting adhesive to at least a wafer; A die-sinder film attaching step of attaching a dicing film to a die adhesive; an IC chip separating step of cutting the wafer and the thermosetting adhesive into IC chips; and a thermosetting adhesive. And a mounting step of attaching the IC chip to which is adhered to the carrier, wherein the thermosetting adhesive has a viscosity of 20, OOOPa's or less at the attaching temperature in the adhesive attaching step.
- a third method for manufacturing an electronic member according to the present invention is a method for attaching an adhesive material for attaching a base film having a thermosetting adhesive material to at least a wafer.
- a mounting step of attaching the carrier to a carrier, and the thermosetting adhesive has a viscosity of 20,000 Pa, s or less depending on the attaching temperature in the adhesive attaching step.
- an expensive ultraviolet-curable adhesive is not used, so that it can be manufactured with an inexpensive material, and the process can be further shortened and an inexpensive process can be provided. .
- thermosetting adhesive at the time of bonding in the adhesive bonding step is set to 20,000
- the pressure By setting the pressure to Pa's or less, the adhesion to the wafer is improved, and the generation of voids between the wafer and the thermosetting adhesive can be reduced.
- the base film as the base material of the adhesive also serves as the dicing film, so that the cost can be reduced and the amount of waste can be reduced.
- the viscosity of the thermosetting adhesive at the bonding temperature in the bonding step of the adhesive is further equal to or more than 100 Pa's. . In this case, the handleability of the adhesive is good.
- thermosetting adhesive does not start a thermosetting reaction at the bonding temperature in the adhesive bonding step.
- bonding temperature in the adhesive bonding step be lower than the thermosetting start temperature of the thermosetting adhesive.
- the adhesive does not cure at the time of attachment. Therefore, even in the case of a thin wafer, warping or elongation of the wafer due to the stress of the adhesive after bonding can be prevented, and further, generation of adhesive glue during the cutting step can be prevented.
- the thickness of the wafer becomes thinner due to the thinner package, etc.
- the thermosetting adhesive is semi-cured by the heat at the time of applying the thermosetting adhesive and the subsequent heat curing, the wafer and the The wafer may be warped by the stress between the adhesive and the thermosetting adhesive, which may cause problems such as poor dicing. This is solved. Further, since the warpage and elongation of the carrier due to the temperature can be ignored, a highly reliable process with high positional accuracy can be provided.
- the adhesive is not cured in the adhesive bonding step, the adhesiveness between the adhesive and the carrier in the mounting step can be increased, and voids can be further reduced.
- the viscosity of the thermosetting adhesive is 20,000
- thermosetting adhesive at the bonding temperature in the mounting step further increases by 100%.
- it is Pa ⁇ s or more.
- thermosetting adhesive does not start a thermosetting reaction at the bonding temperature in the mounting step. According to this, the adhesiveness between the adhesive and the carrier during mounting can be sufficiently ensured.
- thermosetting adhesive is preferably in the form of a film or a paste.
- thermosetting adhesive is in the form of a film or paste, the adhesive can be easily handled.
- the cutting step it is preferable to use a dicing saw.
- thermosetting adhesive is previously covered with a base film.
- the step of attaching the dicinda film includes the step of peeling the base film and the step of attaching the dicinda film to a thermosetting adhesive. And preferably including.
- an IC chip with an adhesive according to the present invention is different from an IC chip with an adhesive in which an adhesive is attached to the back surface of the IC chip.
- the adhesive is directly adhered to a base film or a die-sinder film, the adhesive contains at least a thermosetting resin, the adhesive has not started a curing reaction, and the adhesive has a reaction.
- the viscosity is below 20, OOOPa's below the starting temperature.
- the adhesive-attached IC chip of the present invention the adhesive is directly attached to the base film or the dicing film, and can be handled at a low cost, and the adhesive is a thermosetting resin immediately. As a result, the adhesive strength with the carrier can be secured, and a low-cost IC chip with an adhesive can be provided.
- the viscosity of the adhesive is not more than 20, OOOPa's at the temperature at which the reaction starts, the generation of voids between the IC chip and the IC chip before the reaction is started is prevented. Adhesive strength can be secured. In addition, the generation of voids can be prevented even when bonding with a carrier.
- the adhesive preferably has a viscosity of not less than 100Pa's at a temperature lower than the temperature at which the curing reaction starts, and thus exhibits a sufficient adhesive force.
- the temperature at which the adhesive starts a curing reaction is preferably 80 to 120 ° C.
- the IC chip with the adhesive is attached to the carrier at a temperature lower than the temperature at which the curing reaction starts, for example, at 70 to 90 ° C. warp, Since the elongation is easily ignored, it is possible to provide a reliable process with high positional accuracy.
- the adhesive is a film-like resin.
- the adhesive material is in the form of a film, it is easy to handle at the time of fabrication, and even when the IC chip is thin, it can easily prevent the IC chip from creeping up on the surface of the IC chip at the time of adhesion to the carrier.
- the IC chip preferably has a thickness of 200 microns or less.
- the size (planar shape) of the adhesive is substantially the same as that of the IC chip, fillet control is easily performed.
- FIG. 1 shows a method of manufacturing an electronic member according to a first embodiment of the present invention, which includes a wafer completion process, an adhesive bonding process, a die sintering film bonding process, an IC chip separation process, and a mount. It is explanatory drawing which shows a process.
- FIG. 2 shows a method of manufacturing an electronic member according to a second embodiment of the present invention, in which a wafer is completed, an adhesive is applied, a base film is applied, a die-sinder film is applied, and an IC chip is separated.
- FIG. 4 is an explanatory view showing a mounting step.
- FIG. 3 is an explanatory view showing a wafer completing step, an adhesive bonding step, an IC chip separating step, and a mounting step in the method for manufacturing an electronic member according to the third embodiment of the present invention.
- FIG. 4 is an explanatory diagram showing an explanatory diagram of an IC chip with an adhesive according to a fourth embodiment of the present invention.
- FIG. 5 is an explanatory view showing an explanatory view of another IC chip with an adhesive according to a fifth embodiment of the present invention.
- FIG. 6 is an explanatory view of a conventional method for manufacturing an electronic member.
- FIG. 7 is an explanatory view showing a cross-sectional view of a conventional IC chip with an adhesive.
- FIG. 8 is an explanatory view showing a cross-sectional view of a conventional IC chip with an adhesive. Explanation of reference numerals
- FIG. 1 shows a method for manufacturing an electronic member according to the first embodiment of the present invention, in which a wafer completing step, an adhesive bonding step, a die cinda film bonding step, and an IC chip separating step are performed.
- FIG. 4 is an explanatory view showing a mounting step.
- the wafer completion process in FIG. 1 (a) is the same as that of the conventional technique, and the description is omitted.
- the film-like bonding material 2 formed on the base film 3 is bonded to the wafer 1 by a laminator. After pasting is completed, temporary curing is not performed.
- the base film for example, a PET film or the like can be used.
- the adhesive an adhesive having a viscosity of 20, OOOPa's or less at the temperature at which the adhesive is applied is used. In addition, from the viewpoint of handleability, the viscosity at the temperature at which the adhesive is
- the bonding temperature is desirably a temperature at which the adhesive does not start a thermosetting reaction in order to reduce the viscosity to such a level that the adhesive can be easily bonded and not to apply stress to the wafer after the bonding.
- the specific bonding temperature is lower than the curing start temperature, for example, 70 to 90 ° C. It is preferred that Such a relatively low temperature is preferable because stress is hardly generated on the wafer.
- the adhesive is formed not only in the form of a film but also in the form of a paste directly on the wafer by a printing method or the like.
- the adhesive material include a thermosetting resin such as an epoxy resin or the like as a main component, and a thermosetting resin and a thermoplastic resin. It may be a mixture of In addition, the adhesive can have insulation, conductivity, and anisotropic conductivity by adding silica, silver, metal particles, and the like, which are not limited to the resin component, as needed. Also, the bonding surface of the adhesive is not limited to the back surface of the wafer, and there is no problem even if it is the front surface or if a bump is previously formed on the pad surface of the front surface.
- the adhesive material satisfying the above-mentioned properties includes an epoxy resin, a curing agent, an inorganic filler, and a polyether sulfone.
- a film-like material having 5-900 parts by weight of inorganic filler per 100 parts by weight of total and a content of 5-100 parts by weight of polyethersulfone per 100 parts by weight of epoxy resin and curing agent is preferable. Better!/,.
- epoxy resin various conventionally known epoxy resins which are liquid or solid at room temperature are used.
- bisphenol A type epoxy resin bisphenol F type epoxy resin
- phenol novolak type epoxy resin are used.
- the use of crystalline epoxy resin that is solid at room temperature is preferred because of its low melt viscosity!
- the curing agent cures the epoxy resin when heated, and has, for example, an activation temperature, ie, a curing reaction initiation temperature of 60 to 180 ° C, preferably 80 to 120 ° C.
- an activation temperature ie, a curing reaction initiation temperature of 60 to 180 ° C, preferably 80 to 120 ° C.
- Various conventionally known products are used. Such substances include, for example, dicyandiamide and its derivatives, organic acid hydrazide, amide imide, salts of polyamines, microcapsule-type curing agents, imidazole-type latent curing agents, acid anhydrides, phenol novolaks, and the like. . In the present embodiment, it is preferable to use a capsule-type curing agent.
- the inorganic filler various kinds of conventionally known inorganic fillers such as silica, alumina, titer, aluminum hydroxide and the like are used.
- silica is preferred.
- an adhesive which is thermally cured at about 80 to 120 ° C. and has a viscosity in an uncured state of 20 or less, OOOPa's or less can be suitably obtained.
- a solution obtained by adding a solvent to the adhesive 2 is applied to the base film 3 and dried.
- a release agent such as silicone may be provided on the surface of the base film 3 which is in contact with the adhesive 2.
- a dicing film 4 is attached to the base film 3 surface.
- the dicing film 4 is provided with an adhesive 4b on a dicing substrate 4a, and the base film 3 is bonded to the adhesive 4b.
- Adhesive 4b need not be UV curable.
- a dicing saw is used to separate at least the wafer 1 and the adhesive 2 along the die cylinder line of the wafer 1 and leave at least a part of the base film 3.
- An IC chip 6 is formed by forming a dicing groove 5 in the substrate. That is, the adhesive 2 is completely cut in accordance with the shape of the IC chip.
- Carrier 7 is not limited to circuit boards such as ceramic boards, rigid boards, flexible boards, etc., and there is no problem with IC chips! / ⁇ .
- the adhesive since the adhesive having the viscosity in the above-described range is used, the adhesive has sufficient fluidity in the adhesive bonding step, and the adhesion between the wafer 1 and the adhesive 2 is good. And voids are less likely to occur in the adhesive. Further, since the adhesive is not thermally cured at the temperature in the adhesive bonding step, it is possible to reduce the warping of the wafer, which is subjected to stress on the wafer in this step, as compared with the case where the adhesive is cured or semi-cured.
- the adhesive has a predetermined fluidity, even in the mounting step, the adhesion between the adhesive and the carrier is improved before thermosetting, and voids are less likely to be generated in the adhesive.
- FIG. 2 shows a method of manufacturing another electronic member according to the second embodiment of the present invention, in which a wafer is completed, an adhesive is applied, a base film is removed, a die cinda film is attached, and an IC chip is separated.
- FIG. 4 is an explanatory view showing a mounting step. The same members as those in the prior art are denoted by the same reference numerals.
- FIG. 2 (a) The wafer completion process in FIG. 2 (a) is the same as that of the conventional technique, and the description is omitted. Also figure
- the adhesive bonding step of 2 (b) is the same as the step of FIG. 1 (b), and a description thereof will be omitted.
- the base film is peeled from the adhesive 2.
- the dicing film 4 is directly attached to the surface of the adhesive 2. No other adhesive is applied to the two surfaces of the adhesive and the four surfaces of the Daishinda Film.
- a dicing saw is used to separate at least the wafer 1 and the adhesive 2 along the dice
- An IC chip 6 is formed by forming a dicing groove 5 so as to leave a part of the memory 4. That is, the adhesive 2 is completely cut according to the shape of the IC chip.
- the IC chip 6 to which the adhesive 2 has been applied is picked up and attached to a prescribed position of the carrier 7. At this time, the IC chip 6 with the adhesive 2 is picked up by peeling the adhesive 2 from the dicing film 4.
- the carrier 7 is not limited to a circuit board such as a ceramic board, a rigid board, or a flexible board, and there is no problem even if it is an IC chip.
- the same operation and effect as those of the first embodiment can be obtained. Further, since the adhesive 2 is directly bonded to the dicing film 4, it is not necessary to make the surface of the dicing film 4 adhesive.
- a release agent such as silicone may be provided on the surface of the base film 3 which is in contact with the adhesive 2.
- a release agent such as silicone may be interposed on the surface of the Daishinda film 4 which is in contact with the adhesive 2.
- Viscosity at 80 ° C is 20, the OOOPa 'reaction starting temperature in s is stuck on the adhesive strength of 25 micron thick 100 ° C SPET film material, a pressure of 80 ° C4kgf (4 X 10 5 Pa) was used to laminate a 200 micron thick 8-inch wafer.
- the wafers were inspected for warpage and voids between the wafer and the adhesive (50x microscope). Wafer warpage and void generation, which would be problematic in the subsequent steps, were strong. After that, it was laminated on Daishinda Film, and the wafer and the adhesive were diced into 10 mm square chip size. At this point, the burr generation of the adhesive and the chip fly were inspected. There was no problem with both.
- the IC chip was picked up from the surface and mounted on a rigid substrate at 80 ° C.
- the pick-up also peeled off between the adhesive and the PET film without any problems, and no operational problems occurred.
- a 25 micron thick adhesive with a viscosity of 100 at 80 ° C, OOOPa's and a reaction start temperature of 70 ° C is applied to a 4 kgf (4 x 10 5 Pa) at 80 ° C on a Daishinda film with an ultraviolet curable adhesive.
- the wafer was laminated under pressure to an 8-inch wafer having a thickness of 200 microns, and was first cured at 150 ° C. for 30 seconds. Thereafter, the ueno and the adhesive were diced into a chip size of 10 mm square. Then, after irradiating ultraviolet light from the dicing film surface for 10 seconds, the IC chip was picked up from the surface and mounted on a rigid substrate at 150 ° C.
- FIG. 3 is an explanatory view showing a wafer completion, an adhesive bonding step, an IC chip separating step, and a mounting step in the method for manufacturing an electronic member according to the third embodiment of the present invention.
- the same members as those in the prior art are denoted by the same reference numerals.
- the wafer completion process of FIG. 3A is the same as that of the prior art, and thus the description is omitted.
- a film-like bonding material 2 formed in advance on a base film 3 also serving as a die-sinder film is bonded to the wafer 1 by a laminator.
- the bonding temperature is desirably a temperature at which the adhesive does not start a thermosetting reaction in order to reduce the viscosity of the adhesive to such a degree that the adhesive can be easily bonded and not to apply stress to the wafer after the bonding.
- a suitable bonding temperature that does not easily apply stress to the wafer is a temperature lower than the thermosetting start temperature if the thermosetting start temperature of the adhesive is about 80 to 120 ° C. — About 90 ° C.
- an adhesive having a viscosity at the attachment temperature of 20, OOOPa's or less is used.
- a paste-like adhesive that is not only a film-like adhesive is formed on a base film in advance by a method such as a printing method.
- the material of the adhesive may be a thermosetting adhesive, mainly composed of a thermosetting resin such as an epoxy resin, or a mixture of a thermosetting resin and a thermoplastic resin. Even if there is no power.
- the adhesive can have an insulating property, a conductive property and an anisotropic conductive property by adding silica, silver, metal particles and the like which are not limited to the resin component as needed.
- the bonding surface of the adhesive is not limited to the back surface of the wafer, and there is no problem even if the bonding surface is the front surface or the bump surface is previously formed on the pad surface of the front surface.
- the adhesive 2 is the same as in the first embodiment, and the bonding temperature is also the same as in the first embodiment.
- a dicing saw is used to separate at least the wafer 1 and the adhesive 2 along the dicing line of the wafer 1, and to remove at least a part of the base film 3.
- An IC chip 6 is formed by forming a dicing groove 5 so as to leave it. That is, the base film 3 functions as a die cinda film. At this time, the adhesive 2 is completely cut according to the shape of the IC chip.
- the IC chip 6 to which the adhesive 2 has been applied is picked up and attached to a specified position of the carrier 7. At this time, the IC chip 6 with the adhesive 2 is picked up by peeling the adhesive 2 from the base film 3.
- the carrier 7 is not limited to a circuit board such as a ceramic board, a rigid board, or a flexible board, and there is no problem even if it is an IC chip.
- the adhesive (2) which is the supporting base material, serves as a die-sinda film, that is, a film that fixes each IC chip without being completely cut in the cutting process, thereby reducing costs and disposing of This has the effect of reducing the number of objects.
- a release agent such as silicone may be provided on the surface of the base film 3 that is in contact with the adhesive 2.
- Viscosity at 80 ° C is 20, the OOOPa 's at the start of the reaction temperature is 25 microns thick adhesive material of 100 ° C was stuck onto a dicing film material, a pressure of 80 ° C4kgf (4 X 10 5 Pa) was laminated on a 200-micron 8-inch wafer. At this point, the wafer was inspected for warpage and voids between the wafer and the adhesive (50x microscope). Wafer warpage and void generation, which would be problematic in subsequent steps, were strong. After that, the wafer and the adhesive were diced to a chip size of 10 mm square. At this point, generation of adhesive glue and chip fly were inspected. There was no problem with both.
- the IC chip was picked up from the surface and mounted on a rigid substrate at 80 ° C.
- the pick-up also peeled off between the adhesive and the Daishinda film without any problems, and there was no problem with work.
- An adhesive having a viscosity of 30, OOOPa's at 80 ° C and the same other physical properties was laminated on the wafer under the same conditions as in Example 1, and dicing and mounting were performed. After bonding to the wafer, a large number of voids (50 ⁇ microscope) were generated without warping. In the inspection after dicing, no chip was found, but there was a problem of chip jump during dicing. Then In the pickup, there was a problem that a large number of chips were separated from the adhesive.
- a 25 micron thick adhesive with a viscosity of 100 at 80 ° C, OOOPa's and a reaction start temperature of 70 ° C is applied to a 4 kgf (4 x 10 5 Pa) at 80 ° C on a Daishinda film with an ultraviolet curable adhesive.
- the wafer was laminated under pressure to an 8-inch wafer having a thickness of 200 microns, and was first cured at 150 ° C. for 30 seconds. Thereafter, the ueno and the adhesive were diced into a chip size of 10 mm square. Then, after irradiating ultraviolet light from the dicing film surface for 10 seconds, the IC chip was picked up from the surface and mounted on a rigid substrate at 150 ° C.
- FIG. 4 is a sectional view of an IC chip with an adhesive according to a fourth embodiment of the present invention.
- FIG. 5 is a sectional view of another IC chip with an adhesive according to the fifth embodiment of the present invention.
- the same members as those of the conventional technology are denoted by the same reference numerals.
- Fig. 4 shows a case where a material having an adhesive material directly attached to a base film is attached to a wafer, and the base film is attached to a die cylindrical film and diced to produce an IC chip with an adhesive material.
- a base film 23 is stuck on a dicing film 24, and an adhesive 22 is directly bonded on the base film 23, and an IC chip 21 is bonded thereon.
- the IC chip 21 and the adhesive 22 are separated from the adjacent IC chip and the adhesive by a separation groove 25.
- the size of the adhesive 22 is almost the size of the IC chip 21 and the IC chip is warped because the adhesive is not cured.
- the adhesive 22 is the same as the adhesive 2 of the first embodiment.
- the dicing film 24 has an adhesive 24b provided on a dicing substrate 24a, and adheres the base film 23 to the adhesive 24b.
- Adhesive 24b need not be UV curable.
- the aspect of the IC chip with the adhesive is the IC with the adhesive in the state of (d) in Fig. 1 of the first embodiment. Same as chip.
- FIG. 5 shows a structure in which a base film and a dicing film are used in common.
- a material with an adhesive is directly attached to the wafer on the dicing film (base film) and diced to produce IC chips with adhesive.
- the adhesive 22 is directly adhered on the die cylindrical film 24, and the IC chip 21 is adhered thereon.
- the IC chip 21 and the adhesive 22 are separated from the adjacent IC chip and the adhesive by a separation groove 25.
- the size of the adhesive 22 is almost the size of the IC chip 21, and the IC chip is not warped because the adhesive is not cured.
- the aspect of the IC chip with adhesive is the IC chip with adhesive in the state of FIG. 2E of the second embodiment and the adhesive with the adhesive in the state of FIG. 3C of the third embodiment. Same as IC chip.
- the adhesive is directly attached to the base film or the die-sinder film, and is easily handled at low cost.
- the adhesive that facilitates fillet control is a thermosetting resin, so the adhesive strength with the carrier can be secured, and a low-cost IC chip with an adhesive can be provided.
- the adhesive starts a curing reaction, the stress on the IC chip is small, and there is reliability that burrs can be prevented from occurring during dicing.
- the viscosity of the adhesive is not more than 20, OOOPa's at the temperature at which the reaction is started, it is possible to prevent the generation of voids with the IC chip before starting the thermal reaction. Adhesive strength between the chip and the adhesive can be secured. In addition, the generation of voids can be prevented even when bonding with a carrier.
- the viscosity of the adhesive is preferably at least 100 Pa's or more.
- the temperature at which the adhesive starts the thermosetting reaction is preferably 80 to 120 ° C.
- the sticking temperature becomes, for example, 70%.
- the temperature can be as low as about 90 ° C, and the warpage and elongation of the carrier due to temperature can be ignored, so that a highly reliable process with high positional accuracy can be provided.
- the adhesive is a film-like resin, it is easy to handle at the time of preparation, and even if the IC chip is thin, it can easily prevent the IC chip from creeping up on the surface of the IC chip when adhering to the carrier. Further, in the present embodiment, even when the thickness of the IC chip is 200 ⁇ m or less, the fillet control does not warp.
- a material with a viscosity of 20, OOOPa's at 80 ° C, a reaction start temperature of 100 ° C, and a 25 micro-thick adhesive stuck on the PET film is pressed at 80 ° C at a pressure of 4 kgf (4 x 10 5 Pa).
- the wafers were inspected for warpage and voids between the wafer and the adhesive (50x microscope). Wafer warpage and void generation, which would be problematic in the subsequent steps, were strong. After that, it was laminated on Daishinda Film, and the wafer and the adhesive were diced into 10 mm square chip size. At this point, the burr generation of the adhesive and the chip fly were inspected.
- the IC chip was picked up from the surface and mounted on a rigid substrate at 80 ° C.
- the pick-up also peeled off between the adhesive and the PET film without any problems, and no operational problems occurred. There were no voids between the rigid substrate.
- the adhesive was cured at 150 ° C. for 1 hour.
- a 25 micron thick adhesive with a viscosity of 100 at 80 ° C, OOOPa's and a reaction start temperature of 70 ° C is applied to a 4 kgf (4 x 10 5 Pa) at 80 ° C on a Daishinda film with an ultraviolet curable adhesive.
- the wafer was laminated under pressure to an 8-inch wafer having a thickness of 200 microns, and was first cured at 150 ° C. for 30 seconds. Thereafter, the ueno and the adhesive were diced into a chip size of 10 mm square. Then, after irradiating ultraviolet light from the dicing film surface for 10 seconds, the IC chip was picked up from the surface and mounted on a rigid substrate at 150 ° C.
Description
Claims
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US10/574,825 US20070134846A1 (en) | 2003-10-07 | 2004-10-07 | Electronic member fabricating method and ic chip with adhesive material |
JP2005514605A JPWO2005036633A1 (ja) | 2003-10-07 | 2004-10-07 | 電子部材の製造方法、及び、接着材付icチップ |
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JP2006310846A (ja) * | 2005-04-28 | 2006-11-09 | Ls Cable Ltd | 半導体用ダイシングダイ接着フィルム |
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JP3844032B2 (ja) * | 1998-07-14 | 2006-11-08 | 日本テキサス・インスツルメンツ株式会社 | 半導体装置及びその製造方法 |
KR100647132B1 (ko) * | 2001-08-27 | 2006-11-17 | 히다치 가세고교 가부시끼가이샤 | 접착시트 및 반도체장치 및 그 제조방법 |
US7176055B2 (en) * | 2001-11-02 | 2007-02-13 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for manufacturing electronic component-mounted component, and electronic component-mounted component |
JP4135565B2 (ja) * | 2003-06-06 | 2008-08-20 | 松下電器産業株式会社 | 電子回路装置およびその製造方法 |
JP4309710B2 (ja) * | 2003-07-11 | 2009-08-05 | 住友ベークライト株式会社 | 半導体用接着フィルム、ダイシングフィルムおよび半導体装置 |
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2004
- 2004-10-07 US US10/574,825 patent/US20070134846A1/en not_active Abandoned
- 2004-10-07 WO PCT/JP2004/014865 patent/WO2005036633A1/ja active Application Filing
- 2004-10-07 JP JP2005514605A patent/JPWO2005036633A1/ja active Pending
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US8288246B2 (en) | 2006-07-27 | 2012-10-16 | Princo Corp. | Structure combining an IC integrated substrate and a carrier, and method of manufacturing such structure |
EP1890323A2 (en) * | 2006-08-18 | 2008-02-20 | Princo Corp. | Structure combining an IC integrated substrate and a carrier, and method of manufacturing such structure |
EP1890323A3 (en) * | 2006-08-18 | 2009-10-14 | Princo Corp. | Structure combining an IC integrated substrate and a carrier, and method of manufacturing such structure |
JPWO2008126717A1 (ja) * | 2007-04-06 | 2010-07-22 | 日立化成工業株式会社 | 半導体用接着フィルム、複合シート及びこれらを用いた半導体チップの製造方法 |
US8404564B2 (en) | 2007-04-06 | 2013-03-26 | Hitachi Chemical Company, Ltd. | Adhesive film for semiconductor, composite sheet, and method for producing semiconductor chip using them |
JP2009231700A (ja) * | 2008-03-25 | 2009-10-08 | Furukawa Electric Co Ltd:The | ウエハ加工用テープ |
WO2011152491A1 (ja) * | 2010-06-02 | 2011-12-08 | ソニーケミカル&インフォメーションデバイス株式会社 | ウエハのダイシング方法、接続方法及び接続構造体 |
JP2011253939A (ja) * | 2010-06-02 | 2011-12-15 | Sony Chemical & Information Device Corp | ウエハのダイシング方法、接続方法及び接続構造体 |
JP2015133465A (ja) * | 2013-12-13 | 2015-07-23 | 東京応化工業株式会社 | 貼付方法 |
Also Published As
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JPWO2005036633A1 (ja) | 2007-11-22 |
US20070134846A1 (en) | 2007-06-14 |
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