JP2009111431A - Wafer dicing method, semiconductor device, method for manufacturing same, circuit board, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wafer dicing method capable of forming a thin semiconductor chip, a semiconductor device, a method for manufacturing the semiconductor device, a circuit board, and an electronic apparatus. <P>SOLUTION: The dicing method includes the steps of: bonding a support member 20 onto one side surface of a wafer 10 as a circuit surface 14, thinning the rear surface 18 of the wafer 10 opposite to the circuit surface 14, forming an adhesive layer 103 on the rear surface 18 of the wafer 10, bonding a dicing tape 102 having at least a self-adhesive layer 102b onto the adhesive layer 103 so that the adhesive layer 103 faces the self-adhesive layer 102b, and cutting the wafer 10 together with the adhesive layer 103 and the support member 20 into chips, wherein the self-adhesive layer 102b of the dicing tape 102 is formed with radiation curing self-adhesive which is internally provided therein and uses acryl-based polymer in which carbon-carbon double bond is introduced by 2-methacryloyloxyethyl isocyanate as base polymer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wafer dicing method, a semiconductor device and a manufacturing method thereof, a circuit board, and an electronic apparatus.

  In the manufacturing process of a semiconductor wafer (hereinafter referred to as “wafer”), a thin processing process is generally performed on the back surface of a wafer on which a pattern is formed, such as grinding and polishing the back surface of the wafer to a predetermined thickness. The In this process, a protective sheet is generally attached for the purpose of protecting the circuit surface of the wafer. Recently, wafers are becoming larger, such as 8 inches (200 mm) and 12 inches (300 mm), and thinner for IC cards. As wafers become thinner, the processing system itself after grinding of the wafer back surface is changing. For example, conventionally, a protective sheet that protects a circuit surface during thin processing on the back surface of a wafer is usually peeled off immediately after the back surface processing, and then a die attach film is bonded.

  However, the thinning of the wafer made it difficult to handle the back-ground ground wafer. Therefore, when bonding a die attach film in consideration of wafer breakage or the like, a method of bonding a die attach film while protecting the wafer surface with a back grind sheet and then peeling the back grind sheet is spreading. After laminating the die attach film in the above method, a heating step of pre-curing the die attach film at a high temperature of about 120 ° C. to 200 ° C. is usually performed. However, the conventionally known back grind sheet has insufficient heat resistance. In addition, when the wafer is cooled to room temperature after the heating step, there is a problem that the wafer largely warps due to the difference in linear expansion coefficient between the wafer and the back grind sheet.

  In recent years, semiconductor wafers have become larger and thinner, and along with this, semiconductor wafer processing methods have become a problem. In particular, as semiconductor wafers become larger and thinner, the semiconductor wafer warps when it is polished on the back surface, causing problems such as being unable to be transported by equipment so far. There is known a method of dividing a wafer into individual thin semiconductor chips by half-cutting the circuit surface of the support wafer and grinding the back surface of the wafer even if the support member is reinforced so that dicing can be performed.

  However, since the wafer after half-cutting is easily broken, it is difficult to handle the wafer when shifting to the grinding process. Further, in order to reliably perform half-cutting, the wafer needs to have a certain thickness, and half-cutting is difficult in the case of a thin wafer.

  The present invention has been made in view of the above problems, and an object thereof is to provide a wafer dicing method, a semiconductor device and a manufacturing method thereof, a circuit board, and an electronic apparatus capable of forming a thin semiconductor chip. .

  In order to solve the above-described conventional problems, the inventors of the present application have made extensive studies on a wafer dicing method, a semiconductor device and a manufacturing method thereof, a circuit board, and an electronic device. As a result, the inventors have found that the object can be achieved by employing the following configuration, and have completed the present invention.

  That is, in order to solve the above-described problems, the wafer dicing method according to the present invention includes a step of attaching a support member to the circuit surface side of the wafer and a thin processing of the back surface opposite to the circuit surface of the wafer. A step of forming an adhesive layer on the back side of the wafer, and a dicing tape having at least an adhesive layer on the adhesive layer so that the adhesive layer and the adhesive layer face each other. And a step of cutting the wafer together with the adhesive layer and a support member into a chip.

  In the above method, the back surface is thinned and cut in a state where the wafer is reinforced by attaching the support member, so that the strength of the wafer is compensated for and the breakage can be reduced. In the cutting, the wafer is fully cut together with the adhesive layer in a state where the wafer is bonded and fixed to the dicing tape. Therefore, chip fly is prevented and the wafer is prevented from being damaged during cutting. The support member only needs to be rigid to the extent that the wafer can be reinforced. In addition, since the support member is bonded to the circuit surface side of the wafer, the circuit surface can be prevented from coming into direct contact with other objects, or can be contaminated by grinding debris and abrasive grains generated during thin processing. To prevent.

  In order to solve the above problems, the wafer dicing according to the present invention includes a step of bonding a support member to the circuit surface side of the wafer, and a step of thinning a back surface opposite to the circuit surface of the wafer. Bonding a dicing tape having at least an adhesive layer and an adhesive layer laminated on the back side of the wafer so that the back side of the wafer and the adhesive layer face each other; and the wafer, the adhesive And cutting the chip together with the layer and the support member into a chip.

  In the above method, the wafer bonded to the dicing tape having the pressure-sensitive adhesive layer and the adhesive layer is fully cut together with the adhesive layer, and is bonded and fixed to the dicing tape. Also in this method, since the wafer is fully cut with the support member bonded and reinforced, damage due to insufficient strength of the wafer can be prevented. The support member only needs to be rigid to the extent that the wafer can be reinforced. In addition, since the support member is bonded to the circuit surface side of the wafer, the circuit surface is prevented from coming into direct contact with, for example, a chuck table, and is contaminated by grinding dust and abrasive grains generated during thin processing. To prevent.

  In order to solve the above problems, the wafer dicing according to the present invention includes a step of bonding a support member to the circuit surface side of the wafer, and a step of thinning a back surface opposite to the circuit surface of the wafer. And a step of bonding a dicing tape having at least an adhesive layer on the back surface side of the wafer so that the back surface of the wafer and the adhesive layer face each other, and the wafer, the adhesive And cutting the chip together with the layer and the support member into a chip.

  In the above method, the wafer bonded to the dicing tape having the adhesive layer is fully cut together with the adhesive layer, and is adhered and fixed to the dicing tape. Also in this method, since the wafer is fully cut with the support member bonded and reinforced, damage due to insufficient strength of the wafer can be prevented. The support member only needs to be rigid to the extent that the wafer can be reinforced. In addition, since the support member is bonded to the circuit surface side of the wafer, the circuit surface is prevented from coming into direct contact with, for example, a chuck table, and is contaminated by grinding dust and abrasive grains generated during thin processing. To prevent.

  In the above method, the support member can be bonded to the wafer via an adhesive or a double-sided adhesive sheet.

In order to solve the above problems, a method for manufacturing a semiconductor device according to the present invention includes a step of bonding a support member to a circuit surface side of a wafer, and a step of thinning a back surface opposite to the circuit surface of the wafer. And a step of forming an adhesive layer on the back side of the wafer, and a dicing tape having at least an adhesive layer on the adhesive layer so that the adhesive layer and the adhesive layer face each other. Process,
Cutting the wafer together with the adhesive layer and the support member into a chip, peeling the chip with the adhesive layer from the dicing tape, and converting the chip with the adhesive layer into the adhesive And a step of die-bonding on the substrate through the layer.

  In the above method, the wafer bonded to the dicing tape through the adhesive layer is fully cut, and the wafer is bonded and fixed to the dicing tape. Therefore, chipping and chip jumping are suppressed, and damage to the wafer is prevented. Further, since the cutting is performed together with the adhesive layer, when the chip is peeled from the dicing tape, the chip is in a state where the adhesive layer is bonded. As a result, the chip can be die-bonded on the substrate via the adhesive layer. Therefore, according to the above method, it is possible to improve the yield and manufacture the semiconductor device. In addition, the support member should just have the hardness which can reinforce a wafer.

  In addition, in order to solve the above-described problems, a method of manufacturing a semiconductor device according to the present invention includes a step of attaching a support member to a circuit surface side of a wafer and a thin processing of a back surface opposite to the circuit surface of the wafer. Bonding the dicing tape in which at least the adhesive layer and the adhesive layer are laminated on the back surface side of the wafer so that the back surface of the wafer and the adhesive layer face each other, and the wafer, A step of cutting together with the adhesive layer and the support member into a chip, a step of peeling the chip with the adhesive layer from the dicing tape, and the chip with the adhesive layer through the adhesive layer as a substrate And a die bonding step.

  In the above method, the wafer bonded to the dicing tape having the adhesive layer and the pressure-sensitive adhesive layer is fully cut, and the wafer is bonded and fixed to the dicing tape. Therefore, the occurrence of chip jumping is suppressed and damage to the wafer is prevented. Further, since the cutting is performed together with the adhesive layer, when the chip is peeled from the dicing tape, the chip is in a state where the adhesive layer is bonded. As a result, the chip can be die-bonded on the substrate via the adhesive layer. Therefore, according to the above method, it is possible to improve the yield and manufacture the semiconductor device. In addition, the support member should just have the hardness which can reinforce a wafer.

  In addition, in order to solve the above-described problems, a method of manufacturing a semiconductor device according to the present invention includes a step of attaching a support member to a circuit surface side of a wafer and a thin processing of a back surface opposite to the circuit surface of the wafer. Bonding the dicing tape having at least an adhesive layer on the back surface side of the wafer so that the back surface of the wafer and the adhesive layer face each other, and bonding the wafer to the adhesive The step of cutting together with the adhesive layer and the support member into a chip, the step of peeling the chip with the adhesive layer from the dicing tape, and the chip with the adhesive layer are bonded to the adhesive layer. And a step of die-bonding on the substrate through the agent layer.

  In the above method, the wafer bonded to the dicing tape having the adhesive layer is fully cut, and the wafer is bonded and fixed to the dicing tape. Therefore, the occurrence of chip jumping is suppressed and damage to the wafer is prevented. Further, since the cutting is performed together with the adhesive layer, when the chip is peeled from the dicing tape, the chip is in a state where the adhesive layer is bonded. Thereby, the chip can be die-bonded on the substrate via the adhesive layer. Therefore, according to the above method, it is possible to improve the yield and manufacture the semiconductor device. In addition, the support member should just have the hardness which can reinforce a wafer.

  In the above method, the support member may be bonded to the wafer via an adhesive or a double-sided adhesive sheet.

  In the above method, the die bonding may be performed after the support member is peeled from the chip.

  In the above method, the support member may be peeled off from the chip after the die bonding.

  In order to solve the above problems, a semiconductor device according to the present invention is manufactured by the method for manufacturing a semiconductor device described above.

  In order to solve the above problems, a circuit board according to the present invention is one in which the semiconductor device described above is mounted.

  In order to solve the above-described problems, an electronic apparatus according to the present invention includes the semiconductor device described above.

  The present invention has the following effects by the means described above. That is, according to the present invention, it is possible to process a wafer by reducing breakage, and as a result, it is possible to improve the yield and manufacture a semiconductor device.

It is explanatory drawing which shows the manufacturing process of the semiconductor device which concerns on one Embodiment of this invention. It is a cross-sectional schematic diagram for demonstrating the dicing process of a wafer in the said embodiment. It is explanatory drawing which shows the manufacturing process of the semiconductor device which concerns on the said embodiment. It is a cross-sectional schematic diagram which shows the other dicing tape used for the manufacturing method of the semiconductor device which concerns on this invention. It is a figure which shows the manufacturing method of the semiconductor device which concerns on Embodiment 2 to which this invention is applied.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings. However, parts that are not necessary for the description are omitted, and some parts are illustrated by being enlarged or reduced for easy explanation.

  FIG. 1A to FIG. 1E are explanatory views showing manufacturing steps of the semiconductor device according to the present embodiment. In the present embodiment, the wafer dicing method according to the present invention is applied when the wafer is cut. The wafer dicing method is also a chip manufacturing method.

  In the method of manufacturing a semiconductor device according to the present embodiment, first, a support member 20 is bonded to the circuit surface 14 side of the wafer 10 (see FIG. 1A). The bonding is performed by aligning the wafer 10 and the support member 20. The bonding of the support member 20 is performed to compensate for the lack of strength even after the wafer 10 has been thinned as described later. Therefore, the support member 20 has a hardness that maintains at least a certain shape. As the support member 20, the support member 20 may have the same strength as the wafer 10 by using the same material as the wafer 10. For example, when the material of the wafer 10 is silicon (Si), the support member 20 may be made of silicon or glass. Further, the material of the support member 20 is not limited to this, and may be an organic material such as ceramic, glass epoxy, or polyimide resin.

  In addition, the thickness of the wafer 10 is artificially increased after the thin processing. For example, a wafer having a thickness of about 50 μm has the same strength as a wafer having a thickness of about 200 to 300 μm or more due to the bonding of the support member 20. Note that the total thickness of the wafer 10 and the support member 20 is not limited as long as the wafer 10 can be cut to a sufficient strength when the support member 20 is attached to the wafer 10. Even if a wafer sheet is affixed to the wafer 10 to fix the wafer 10 during dicing, which will be described later, the wafer sheet does not have the strength to reinforce the wafer 10 and maintains a certain shape. It is not the support member 20 because it is made of a material that does not.

  The wafer 10 and the support member 20 may be bonded via an adhesive 22. For example, the support member 20 is attached to the circuit surface of the wafer 10 (the surface on which the integrated circuit is formed) via the adhesive 22. As the pressure-sensitive adhesive 22, a sheet-like material or a paste-like material may be used.

  The adhesive 22 is preferably a material that can be peeled at least from the wafer 10 in a later step. If peeling is possible, the adhesive 22 may be a curing material, that is, an adhesive (adhesive material). The adhesive preferably has a property of maintaining an adhesive force at the time of bonding and being easily peelable by a certain treatment. Even if a water peelable adhesive member, a heat peelable adhesive member, an electromagnetic wave curable peelable adhesive member (such as an ultraviolet peelable adhesive member, a photocurable peelable adhesive member, or an electron beam curable peelable member) is used as the adhesive. Good. As the water-peelable adhesive member, a water-soluble member such as a temporary adhesive from Amreco Products can be used. As the heat-peelable adhesive member, one having the property of foaming and peeling from the adhesive surface when heat is applied can be used. As the heat-peelable adhesive, Riva Alpha (registered trademark) series manufactured by Nitto Denko Corporation can be used. Examples of the electromagnetic wave curable releasable adhesive member include those in which resin curing progresses by irradiating ultraviolet rays, light, electron beams, and the like, and the adhesive strength decreases.

  The pressure-sensitive adhesive 22 is easily peeled off from the wafer 10, but is preferably hard to peel off from the support member 20. According to such an adhesive 22, even when the support member 20 is peeled from the wafer 10, the adhesive 22 adheres to the support member 20 and does not remain on the wafer 10. When the wafer 10 and the support member 20 have different properties, the pressure-sensitive adhesive 22 having such characteristics may be selected.

  Or in order to strengthen the adhesive force (adhesive force) with the adhesive 22 in the support member 20, you may give surface modification processing to the support member 20. FIG. Specifically, surface modification processing is performed on the surface of the support member 20 on which the pressure-sensitive adhesive 22 is provided (surface to be attached to the wafer 10). As one of the surface modification processes, there is a surface roughening process of the support member 20. The roughening treatment may be performed by physical treatment such as polishing the surface, or may be performed by chemical treatment such as oxidizing the surface or hydrophilizing the surface (such as silane coupling treatment or primer treatment). Good.

  By the roughening treatment, the adhesive force (adhesive force) between the support member 20 and the adhesive 22 is enhanced as compared with the wafer 10. By doing so, the adhesive 22 can be peeled from the chip 26 together with the support member 20 when the support member 20 is separated from the chip 26. In the present invention, instead of the pressure-sensitive adhesive 22, a double-sided pressure-sensitive adhesive sheet in which pressure-sensitive adhesive layers are provided on both surfaces of the substrate may be used.

  The wafer 10 is a semiconductor wafer made of a semiconductor such as silicon (Si), germanium (Ge), or gallium-arsenic (Ga-As), and has a plurality of integrated circuits (LSI circuits) on one surface (circuit surface 14). Pattern) and a plurality of pads. The wafer 10 is cut into chips for each integrated circuit (details will be described later).

  Next, as shown in FIG. 1B, the back surface 18 of the wafer 10 opposite to the circuit surface 14 is thinned. This step is a step of performing various conventionally known methods such as a mechanical or chemical method such as a grinding step, a polishing step (CMP) or an etching step. Specifically, the position of the wafer 10 is turned upside down, the support member 20 is chucked, and the back surface 18 of the wafer 10 is thinned. The thin processing machine 101 used for such thin processing is not particularly limited, and examples thereof include a grinding machine (back grinder) and a CMP pad. Thin processing is performed until the wafer 10 has a desired thickness. Since the circuit surface 14 is protected by the support member 20, the circuit surface is not contaminated by grinding dust or the like generated during grinding.

  Next, as shown in FIG. 1C, an adhesive layer 103 is formed on the back surface 18 side of the wafer 10 ′ after thin processing. The adhesive layer 103 is for adhering and fixing the wafer 10 ′ in order to prevent chips (cut pieces) from scattering when the wafer 10 ′ is diced into chips. The adhesive layer 103 functions to prevent the chips (cut pieces) from coming into close contact with the adhesive layer 103 and scattering when dicing the wafer 10 ′ to be bonded to the chip. Further, when the chip is mounted, it functions as an adhesive layer for die bonding that fixes the chip to a substrate or the like. In particular, it is important that the adhesive layer 103 has an adhesive property that does not cause the cut pieces to scatter when the wafer 10 'is diced.

  The adhesive layer 103 can be formed by a normal die adhesive. As the die adhesive, one that can be formed into a sheet shape is preferable. As a specific die adhesive, for example, a die adhesive made of a thermoplastic resin or a thermosetting resin can be suitably used. A die adhesive can be used individually or in combination of 2 or more types. The adhesive layer 103 is preferably capable of sticking to the wafer 10 ′ at 70 ° C. or lower, and more preferably adhesive capable of sticking at room temperature.

  Examples of the thermoplastic resin (thermoplastic die adhesive) used as the die adhesive include saturated polyester resins, thermoplastic polyurethane resins, amide resins (nylon resins), and imide resins. Examples of the thermosetting resin (thermosetting die adhesive) include an epoxy resin, an unsaturated polyester resin, a thermosetting acrylic resin, and a phenol resin. As the thermosetting resin, a thermosetting resin that has been desolvated, formed into a sheet, and B-staged (temporarily cured) is suitable. A mixture of these thermosetting resin and thermoplastic resin can also be used in a B-staged state. In the present invention, silicone, rubber, urethane, imide, and acrylic resins having a high glass transition temperature can also be used as the die adhesive.

  The adhesive layer 103 may have a multilayer structure of two or more layers by appropriately combining thermoplastic resins having different glass transition temperatures and thermosetting resins having different thermosetting temperatures. In addition, since the cutting water is used in the dicing process of the wafer 10 ′, the adhesive layer 103 may absorb moisture and have a moisture content higher than that in the normal state. If it is bonded to a substrate or the like with such a high water content, water vapor may accumulate at the bonding interface at the stage of after-curing and floating may occur. Therefore, as the adhesive layer 103, it is possible to avoid such a problem by diffusing water vapor through the film in the after-curing stage by adopting a structure in which a film with high moisture permeability is sandwiched between die adhesives. Become. Therefore, the adhesive layer 103 may have a multilayer structure in which an adhesive layer, a film, and an adhesive layer are laminated in this order.

  Although the thickness of the adhesive bond layer 103 is not specifically limited, For example, it is preferable that it is about 5-100 micrometers, and it is more preferable that it is about 10-50 micrometers.

  The adhesive layer 103 may contain a conductive substance in order to improve the electrical connection performance between the connected objects. Examples of the conductive substance include particles such as brazing material and solder. In the adhesive layer 103, such a conductive substance is dispersed. By doing so, the particles can act as a bonding wax when bonding the objects to be connected, so that the bonding property can be remarkably improved.

  Next, as shown in FIG. 1D, a dicing tape 102 is bonded onto the adhesive layer 103. The dicing tape 102 is bonded to bond and fix the wafer 10 '. The dicing tape 102 has a structure in which an adhesive layer 102b is provided on at least one surface of the base material 102a. Details thereof will be described later. For bonding, the wafer 10 ′ is placed on the table so that the adhesive layer 103 is on top, the adhesive layer 102b of the dicing tape 102 is overlaid on the adhesive layer 103, and is pressed by a pressing means such as a pressure roll. Paste while. In addition, the wafer 10 'and the dicing tape 102 can be stacked as described above in a pressurizable container (for example, an autoclave), and can be attached to the wafer 10' by pressurizing the inside of the container. At this time, it may be attached while being pressed by the pressing means. Further, it can be attached in the same manner as described above in a vacuum chamber. When pasting by these methods, the dicing tape 102 may be heated to about 30 to 150 ° C.

Next, as illustrated in FIG. 1E, the wafer 10 ′ is cut into a chip together with the adhesive layer 103 and the support member 20. This step is performed in order to manufacture chips by dicing the wafer 10 'by dicing. Dicing is performed from the circuit surface 14 side of the wafer 10 ′. Further, as shown in FIG. 2, the dicing saw 107 in the dicing apparatus performs the full cutting of the wafer 10 ′ so as to cut to the adhesive layer 102b. However, in the present invention, it is not necessary to cut to the pressure-sensitive adhesive layer 102b, and it is sufficient that at least the adhesive layer 103 is cut. It does not specifically limit as a dicing apparatus used at this process, A conventionally well-known thing can be used. The wafer 10 ′ is reinforced by being bonded to the support member 20. For this reason, damage (cracking, chipping, cracking, etc.) of the wafer due to insufficient strength of the wafer 10 ′ can be prevented. Further, since the wafer 10 ′ is bonded and fixed by the dicing tape 102, chip chipping and chip jump can be reduced, and damage to the wafer 10 ′ can be suppressed. Note that the planar shape of the chip (for example, a semiconductor chip) 108 is generally rectangular. A plurality of pads are formed on one surface of the chip 26. The pads are arranged along at least one side (in many cases, two or four sides) of the surface of the chip 26. The pad is thin and flat with aluminum or the like. A passivation film (not shown) is formed on the chip 26 avoiding at least a part of the pad. The passivation film can be formed of, for example, SiO ₂ , Sin, polyimide resin, or the like.

  Next, as shown in FIG. 3A, the chip 26 with the adhesive layer 103 is picked up. The chip 26 is peeled from the dicing tape 102 by the pickup. The pickup method is not particularly limited, and various conventionally known methods can be employed. For example, a method of pushing up the individual chips 26 from the dicing tape 102 side (lower side) with a needle and picking up the pushed-up chips 26 with a pickup device can be mentioned.

  Here, in the case of using a dicing tape 102 having a heat-peelable pressure-sensitive adhesive layer described later or a radiation-curing pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer 102b may be subjected to heat treatment or radiation irradiation. In the case of the heat-peelable pressure-sensitive adhesive layer, when this is heated, the bubble layer expands due to the thermally foamable or thermally expandable component, and the adhesion area with the chip 26 can be significantly reduced. Thereby, the adhesive force of the dicing tape 102 with respect to the chip | tip 26 falls, and peeling of the dicing tape 102 from the chip | tip 26 becomes easy. As a result, the pickup can be performed without damaging the chip 26. The heating conditions such as the heating temperature and the heating time in the heat treatment are not particularly limited, and may be set as necessary. In the case of a radiation curable pressure-sensitive adhesive layer, conditions such as irradiation intensity and irradiation time at the time of irradiation are not particularly limited, and may be set as necessary. Examples of radiation include ultraviolet rays and electron beams.

  Next, the support member 20 is peeled from the chip 26. When the adhesive 22 is a water-peelable adhesive member, the support member 20 and the chip 26 can be separated by supplying water to the adhesive 22. In this case, since the connection state of the support member 20 and the chip 26 is maintained until water is supplied, the chip 26 can be easily handled (manufacturing operation).

  When the pressure-sensitive adhesive 22 is a heat-peelable adhesive member, heat generated when the chip is heat-treated after the dicing process may be used. Then, by foaming the heat-peelable adhesive member, the chip 26 and the support member 20 can be separated by reducing the bonding area of the heat-peelable adhesive member. According to this, since it can process, without providing a special process for isolation | separation of the chip | tip 26 and the support member 20, the efficiency improvement of a process can be achieved.

  When the pressure-sensitive adhesive 22 is an electromagnetic wave curable peelable adhesive member, a support member 20 having a property of transmitting electromagnetic waves such as glass is used, and peeling by ultraviolet rays, light, electron beams or the like is low cost. There is a merit that it can be done.

  In the present embodiment, since the surface of the support member 20 (the surface to be bonded to the wafer 10) is roughened, the adhesive force (adhesive force) of the adhesive 22 to the support member 20 is the pressure-sensitive adhesive to the wafer 10. It is strengthened compared to the adhesive strength (adhesive strength) of 22. For this reason, when separating the support member 20 from the chip 26, the adhesive 22 can be peeled from the chip 26 integrally with the support member 20, and the adhesive 22 can be prevented from remaining on the chip 26.

  Next, the chip 26 is mounted. Mounting is performed by die-bonding the chip 26 with the adhesive layer 103 to a predetermined position on the substrate 30 such as a lead frame through the adhesive layer 103. In this embodiment, the case of a face-up structure is described as an example. When forming the face-up structure, the chip 26 is mounted on the substrate 30 with the circuit surface on which the active elements of the chip 26 are formed facing upward (opposite the substrate 30).

  In the present embodiment, the electrodes (pads) of the chip 26 and the wiring pattern (not shown) formed on the substrate 30 are electrically connected by wires (wire bonding). As a modification, bumps may be provided on the pads of the chip 26 and leads (inner leads) may be joined to the bumps. In that case, any of gang bonding, single point bonding, and face-down bonding may be applied.

  Further, the periphery of the chip 26 is sealed with a sealing material such as resin. The sealing material protects the surface of the chip 26 and the electrical connection between the pad or wiring pattern and the wire. For example, external terminals (for example, solder balls) may be provided on the substrate 30 on the surface opposite to the mounting surface of the chip 26.

  As described above, in the present embodiment, the wafer 10 can be increased in a pseudo manner by adhering the support member 20 to the thinned wafer 10 (for example, about 50 μm). Strength can be reinforced. In the dicing step, the wafer 10 can be reinforced and cut, and the adhesive to be bonded to the substrate or chip can be cut at the same time, so that damage to the wafer 10 due to insufficient strength can be prevented, and the thin chip 26 can be manufactured with a high yield. Further, in the semiconductor device provided with the chip 26, the thickness of the electronic apparatus having the chip 26 can be reduced, and a space for overlapping in the thickness direction can be formed, so that the mounting density can be increased. Therefore, it is possible to manufacture high-performance semiconductor devices and electronic devices.

  The base material 102 a constituting the dicing tape 102 is a strength matrix of the dicing tape 102. Examples of the material of the base material 102a include low density polyethylene, linear polyethylene, medium density polyethylene, high density polyethylene, ultra low density polyethylene, random copolymer polypropylene, block copolymer polypropylene, homopolypropylene, polybutene, and polymethylpentene. Such as polyolefin, ethylene-vinyl acetate copolymer, ionomer resin, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid ester (random, alternating) copolymer, ethylene-butene copolymer, Polyethylene such as ethylene-hexene copolymer, polyurethane, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyetheretherketone, polyimide, polyetherimide, polyamide, wholly aromatic polymer Amides, polyphenyl sulphates id, aramid (paper), glass, glass cloth, fluorine resin, polyvinyl chloride, polyvinylidene chloride, cellulose resin, silicone resin, metal (foil), and paper. Moreover, polymers, such as the crosslinked body of the said resin, are also mentioned.

  Further, as the base material 102a, an unstretched material may be used. Furthermore, you may use what gave the uniaxial or biaxial stretching process suitably as needed. When the base material 102a is made of a resin sheet imparted with heat shrinkability by stretching or the like, the base material 102a is thermally shrunk after dicing to reduce the adhesive area between the pressure-sensitive adhesive layer 102b and the adhesive layer 103. The chip can be easily collected.

  The surface of the base material 102a may be subjected to a conventional surface treatment in order to improve the adhesion and holding properties with the adjacent layers. Examples of the method include chemical treatment or physical treatment such as chromic acid treatment, ozone exposure, flame exposure, high-voltage impact exposure, and ionizing radiation treatment, and coating treatment with a primer (for example, an adhesive substance described later).

  As the base material 102a, the same type or different types can be appropriately selected and used. Moreover, what blended several types can be used as needed. Further, the base material 102a is provided with a deposited layer of a conductive material having a thickness of about 30 to 500 mm made of a metal, an alloy, or an oxide thereof on the base material 102a in order to impart antistatic ability. You can also. Moreover, the base material 102a may be a single layer or a laminated film in which the resin film or the like is formed into two or more layers. In the case where the pressure-sensitive adhesive layer 102b is a radiation curable type, a material that transmits at least part of radiation such as X-rays, ultraviolet rays, and electron beams is used.

  The thickness of the base material 102a is, for example, about 5 to 200 μm, and is not particularly limited as long as it has a thickness that can withstand the tension caused by the adhesive layer 103 by the heat shrinkage.

  The pressure-sensitive adhesive layer 102b constituting the dicing tape 102 is provided on the base material 102a. The pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer 102b is not particularly limited. For example, rubber type, acrylic type, silicone type. Various general pressure-sensitive pressure-sensitive adhesives such as polyvinyl ether and radiation-curable pressure-sensitive adhesives can be employed.

  As the pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive based on an acrylic polymer is used from the viewpoint of cleanability of an electronic component that is resistant to contamination of wafers, glass, etc., with an organic solvent such as ultrapure water or alcohol. preferable.

  Examples of the acrylic polymer include (meth) acrylic acid alkyl esters (for example, methyl ester, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, s-butyl ester, t-butyl ester, pentyl ester, Isopentyl ester, hexyl ester, heptyl ester, octyl ester, 2-ethylhexyl ester, isooctyl ester, nonyl ester, decyl ester, isodecyl ester, undecyl ester, dodecyl ester, tridecyl ester, tetradecyl ester, hexadecyl ester , Octadecyl ester, eicosyl ester, etc., alkyl groups having 1 to 30 carbon atoms, especially 4 to 18 carbon atoms, such as linear or branched alkyl esters) Beauty (meth) acrylic acid cycloalkyl esters (e.g., cyclopentyl ester, cyclohexyl ester, etc.), etc. One or acrylic polymer using two or more of the monomer component and the like. In addition, (meth) acrylic acid ester means acrylic acid ester and / or methacrylic acid ester, and (meth) of the present invention has the same meaning.

  The acrylic polymer includes units corresponding to other monomer components copolymerizable with the (meth) acrylic acid alkyl ester or cycloalkyl ester, as necessary, for the purpose of modifying cohesive strength, heat resistance, and the like. You may go out. Examples of such monomer components include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, carboxyethyl (meth) acrylate, carboxypentyl (meth) acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid; maleic anhydride Acid anhydride monomers such as itaconic anhydride; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate Hydroxyl group-containing monomers such as 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate, (4-hydroxymethylcyclohexyl) methyl (meth) acrylate; The Sulfonic acid groups such as lensulfonic acid, allylsulfonic acid, 2- (meth) acrylamide-2-methylpropanesulfonic acid, (meth) acrylamidepropanesulfonic acid, sulfopropyl (meth) acrylate, (meth) acryloyloxynaphthalenesulfonic acid Containing monomers; Phosphoric acid group-containing monomers such as 2-hydroxyethylacryloyl phosphate; acrylamide, acrylonitrile and the like. One or more of these copolymerizable monomer components can be used. The amount of these copolymerizable monomers used is preferably 40% by weight or less based on the total monomer components.

  Furthermore, since the acrylic polymer is crosslinked, a polyfunctional monomer or the like can be included as a monomer component for copolymerization as necessary. Examples of such polyfunctional monomers include hexanediol di (meth) acrylate, (poly) ethylene glycol di (meth) acrylate, (poly) propylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, Pentaerythritol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, urethane (meth) Examples include acrylates. These polyfunctional monomers can also be used alone or in combination of two or more. The amount of the polyfunctional monomer used is preferably 30% by weight or less of the total monomer components from the viewpoint of adhesive properties and the like.

  The acrylic polymer can be obtained by subjecting a single monomer or a mixture of two or more monomers to polymerization. The polymerization can be performed by any method such as solution polymerization, emulsion polymerization, bulk polymerization, suspension polymerization and the like. From the viewpoint of preventing contamination of a clean adherend, the content of the low molecular weight substance is preferably small. From this point, the number average molecular weight of the acrylic polymer is preferably 300,000 or more, more preferably about 400,000 to 3,000,000.

  In addition, an external cross-linking agent can be appropriately employed for the pressure-sensitive adhesive in order to increase the number average molecular weight of an acrylic polymer as a base polymer. Specific examples of the external crosslinking method include a method in which a so-called crosslinking agent such as a polyisocyanate compound, an epoxy compound, an aziridine compound, or a melamine crosslinking agent is added and reacted. When using an external cross-linking agent, the amount used is appropriately determined depending on the balance with the base polymer to be cross-linked and further depending on the intended use as an adhesive. In general, it is preferable to blend about 5 parts by weight or less, and further 0.1 to 5 parts by weight with respect to 100 parts by weight of the base polymer. Furthermore, additives such as various conventionally known tackifiers and anti-aging agents may be used for the pressure-sensitive adhesive, if necessary, in addition to the above components.

  As the radiation curable pressure-sensitive adhesive, those having a radiation curable functional group such as a carbon-carbon double bond and exhibiting adhesiveness can be used without particular limitation. An addition-type radiation-curable pressure-sensitive adhesive in which a radiation-curable monomer component or oligomer component is blended with a general pressure-sensitive pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be employed.

  Examples of the radiation curable monomer component to be blended include urethane oligomer, urethane (meth) acrylate, trimethylolpropane tri (meth) acrylate, tetramethylolmethane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, and pentaerythritol. Examples include stall tetra (meth) acrylate, dipentaerystol monohydroxypenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,4-butanediol di (meth) acrylate, and the like. Examples of the radiation curable oligomer component include various oligomers such as urethane, polyether, polyester, polycarbonate, and polybutadiene, and those having a molecular weight in the range of about 100 to 30,000 are suitable. The compounding amount of the radiation-curable monomer component or oligomer component can be appropriately determined in accordance with the type of the pressure-sensitive adhesive layer, and the amount capable of reducing the adhesive strength of the pressure-sensitive adhesive layer. Generally, the amount is, for example, about 5 to 500 parts by weight, preferably about 40 to 150 parts by weight with respect to 100 parts by weight of the base polymer such as an acrylic polymer constituting the pressure-sensitive adhesive.

  In addition to the additive-type radiation curable adhesive described above, the radiation curable adhesive has a carbon-carbon double bond in the polymer side chain or main chain or at the main chain terminal as a base polymer. Intrinsic radiation curable adhesives using Intrinsic radiation curable adhesives do not need to contain oligomer components, which are low molecular components, or do not contain much, so they are stable without the oligomer components etc. moving through the adhesive over time. This is preferable because an adhesive layer having a layered structure can be formed.

  As the base polymer having a carbon-carbon double bond, those having a carbon-carbon double bond and having adhesiveness can be used without particular limitation. As such a base polymer, an acrylic polymer having a basic skeleton is preferable. Examples of the basic skeleton of the acrylic polymer include the acrylic polymers exemplified above.

  The method for introducing a carbon-carbon double bond into the acrylic polymer is not particularly limited, and various methods can be adopted. Introducing a carbon-carbon double bond into a polymer side chain is easier in terms of molecular design. For example, after a monomer having a functional group is copolymerized in advance with an acrylic polymer, a compound having a functional group capable of reacting with the functional group and a carbon-carbon double bond is converted into a radiation-curable carbon-carbon double bond. A method of performing condensation or addition reaction while maintaining the above.

  Examples of combinations of these functional groups include carboxylic acid groups and epoxy groups, carboxylic acid groups and aziridyl groups, hydroxyl groups and isocyanate groups, and the like. Among these combinations of functional groups, a combination of a hydroxyl group and an isocyanate group is preferable because of easy tracking of the reaction. In addition, the functional group may be on either side of the acrylic polymer and the compound as long as the acrylic polymer having the carbon-carbon double bond is generated by the combination of these functional groups. In the preferable combination, it is preferable that the acrylic polymer has a hydroxyl group and the compound has an isocyanate group. In this case, examples of the isocyanate compound having a carbon-carbon double bond include methacryloyl isocyanate, 2-methacryloyloxyethyl isocyanate, m-isopropenyl-α, α-dimethylbenzyl isocyanate, and the like. Further, as the acrylic polymer, those obtained by copolymerizing the above-exemplified hydroxy group-containing monomers, ether compounds of 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, diethylene glycol monovinyl ether, or the like are used.

  As the intrinsic radiation-curable pressure-sensitive adhesive, the base polymer (particularly acrylic polymer) having the carbon-carbon double bond can be used alone, but the radiation-curable monomer is not deteriorated in properties. Components and oligomer components can also be blended. The radiation-curable oligomer component or the like is usually in the range of 30 parts by weight, preferably in the range of 0 to 10 parts by weight with respect to 100 parts by weight of the base polymer.

  The radiation curable pressure-sensitive adhesive contains a photopolymerization initiator when cured by ultraviolet rays or the like. Examples of the photopolymerization initiator include 4- (2-hydroxyethoxy) phenyl (2-hydroxy-2-propyl) ketone, α-hydroxy-α, α′-dimethylacetophenone, 2-methyl-2-hydroxypropio Α-ketol compounds such as phenone and 1-hydroxycyclohexyl phenyl ketone; methoxyacetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxyacetophenone, 2-methyl-1- [4- ( Acetophenone compounds such as methylthio) -phenyl] -2-morpholinopropane-1; benzoin ether compounds such as benzoin ethyl ether, benzoin isopropyl ether and anisoin methyl ether; ketal compounds such as benzyldimethyl ketal; 2-naphthalenesulfo D Aromatic sulfonyl chloride compounds such as luchloride; Photoactive oxime compounds such as 1-phenone-1,1-propanedione-2- (o-ethoxycarbonyl) oxime; benzophenone, benzoylbenzoic acid, 3,3′-dimethyl Benzophenone compounds such as -4-methoxybenzophenone; thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2,4-dimethylthioxanthone, isopropylthioxanthone, 2,4-dichlorothioxanthone, 2 Thioxanthone compounds such as 1,4-diethylthioxanthone and 2,4-diisopropylthioxanthone; camphorquinone; halogenated ketone; acyl phosphinoxide; acyl phosphonate. The compounding quantity of a photoinitiator is about 0.05-20 weight part with respect to 100 weight part of base polymers, such as an acryl-type polymer which comprises an adhesive.

  Examples of the radiation curable pressure-sensitive adhesive include photopolymerizable compounds such as an addition polymerizable compound having two or more unsaturated bonds and an alkoxysilane having an epoxy group disclosed in JP-A-60-196956. And a rubber-based pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive containing a photopolymerization initiator such as a carbonyl compound, an organic sulfur compound, a peroxide, an amine, and an onium salt-based compound.

  The thickness of the pressure-sensitive adhesive layer 102b is not particularly limited, but is preferably about 1 to 50 μm from the viewpoint of preventing chipping of the chip cut surface and compatibility of fixing and holding the adhesive layer. Preferably it is 2-30 micrometers, Furthermore, 5-25 micrometers is preferable.

  In this embodiment, the dicing tape 102 has been described by taking an example in which the adhesive layer 102b is provided on the base material 102a. However, the present invention is not limited to this. That is, as shown in FIG. 4A, a dicing tape 102 'in which an adhesive layer 102c is provided on an adhesive layer 102b may be used. The adhesive layer 102 c basically functions as a die-bonding adhesive layer for fixing a chip to a substrate or the like, similar to the adhesive layer 103, and is formed of the same constituent material as the adhesive layer 103. Is.

  Further, as shown in FIG. 4B, it may be a dicing tape 102 ″ in which an adhesive layer 102d is provided on a base material 102a. As a material constituting the adhesive layer 102d, Examples thereof include thermoplastic resins such as saturated polyester resins, thermoplastic polyurethane resins, amide resins (nylon resins), imide resins, etc. Also, epoxy resins, unsaturated polyester resins, thermosetting acrylic resins. And thermosetting resins (thermosetting die adhesives) such as phenolic resins, etc. Examples of the thermosetting resin include a thermosetting resin that has been desolvated, formed into a sheet, and B-staged (temporarily cured). Note that a mixture of these thermosetting resins and thermoplastic resins can also be used in a B-staged state, and in the present invention, a silicone having a high glass transition temperature. , Rubber, urethane, imide, it can also be used resins such as an acrylic. In the case of using the dicing tape 102 ', 102', the adhesive layer 103 is not required.

  Next, as shown in FIG. 1D, a dicing tape 102 is bonded onto the adhesive layer 103. The dicing tape 102 is bonded to fix the wafer 10 by adhesion. The dicing tape 102 has a structure in which an adhesive layer 102b is provided on at least one surface of the base material 102a. Details thereof will be described later. For bonding, the wafer 10 ′ is placed on the table so that the adhesive layer 103 is on top, the adhesive layer 102b of the dicing tape 102 is overlaid on the adhesive layer 103, and pressed by a pressing means such as a pressure roll. Paste while. Further, the wafer 10 and the dicing tape 102 can be stacked as described above in a pressurizable container (for example, an autoclave), and can be attached to the wafer 10 ′ by pressurizing the inside of the container. At this time, it may be attached while being pressed by the pressing means. Further, it can be attached in the same manner as described above in a vacuum chamber. When pasting by these methods, the dicing tape 102 may be heated to about 30 to 150 ° C.

(Embodiment 2)
FIG. 5A to FIG. 5E are diagrams for explaining a method of manufacturing a semiconductor device according to the second embodiment to which the present invention is applied.

  In the present embodiment, as shown in FIG. 5A, the support member 20 is attached to the wafer 10 and then the wafer 10 is ground. In the present embodiment, an example of lapping is shown as a grinding process. First, the wafer 10 is placed on a lapping table (polishing disc) 12. Next, a support member 20 is attached in advance to the circuit surface (surface on which the integrated circuit is formed) 14 of the wafer 10. By doing so, the circuit surface 14 can be protected, and the strength of the wafer 10 can be reinforced to perform grinding. In addition, since the support member 20 protects the circuit surface 14, a protective tape becomes unnecessary.

  An abrasive 16 is interposed between the lapping table 12 and the wafer 10. The abrasive 16 contacts the back surface 18 of the wafer 10. In the grinding process, the back surface 18 of the wafer 10 is polished by the abrasive 16 so that the thickness of the wafer 10 becomes a predetermined thickness. Except for the above points, the contents described in the first embodiment also apply to the present embodiment.

  Thus, as shown in FIG. 5B, a thin wafer 10 to which the support member 20 is attached is obtained, and this is diced as shown in FIG. 5C. Details thereof are as described in the first embodiment.

  Next, as shown in FIG. 5D, the chip 26 to which the support member 20 is attached is mounted on the substrate 30 so as to form a face-up structure. Specifically, the chip 26 is mounted on the substrate 30 with the surface (the ground surface) opposite to the surface to which the support member 20 is attached of the chip 26 facing the substrate 30. The details are the same as those described in the first embodiment except that the support member 20 is attached.

  Next, the support member 20 is peeled from the chip 26. The details are except that the chip 26 is attached to the substrate 30.

  Thereafter, as described in Embodiment 1, electrical connection using a wire or the like is performed as necessary, a sealing material is provided, and an external terminal is provided.

  According to the present embodiment, since the support member 20 is attached to the wafer 10 and the wafer 10 is ground, the wafer 10 can be reinforced in the grinding process. The effects in the dicing process are as described in the first embodiment. In addition, since the mounting process is performed with the strength of the chip 26 reinforced in the mounting of the chip 26, it is possible to prevent the damage due to the insufficient strength, which has been a problem with the thinning of the chip, in the mounting process. Thus, the manufacturing yield of the semiconductor device can be further increased. Further, when the chip 26 is pressed against the substrate 30, the support member 20 serves as a cushioning material or a protective material. For example, since the collet presses the chip 26 via the support member 20, the chip 26 can be prevented from being damaged.

(Embodiment 3)
In this embodiment, the wafer is thinned, a support member is attached to the wafer and diced, the support member is peeled off from the chip, and then the chip is mounted. The difference from the second embodiment is that the support member is peeled off before the chip is mounted.

  That is, the back surface 18 of the wafer 10 is ground, the support member 20 is attached to the circuit surface 14 of the wafer 10 as shown in FIG. 1A, and dicing is performed as shown in FIG. Then, as shown in FIG. 3A, the chip 26 is picked up, the support member 20 is peeled off from the chip 26, and the chip 26 is mounted on the substrate 30. The chip 26 is mounted so as to form a face-up structure.

  Also in the present embodiment, the effects described in the first embodiment can be achieved.

(Embodiment 4)
In this embodiment, after a support member is attached to the circuit surface of the wafer, the wafer is ground and diced, and after the support member is peeled off, the chip is mounted on the substrate. The difference from the second embodiment is that the chip is mounted on the substrate after the support member is peeled off.

  That is, as shown in FIG. 3A, the support member 20 is attached to the circuit surface 14 of the wafer 10, and dicing is performed as shown in FIG. Then, as shown in FIG. 1D, the support member 20 is peeled from the chip 26 and the chip 26 is mounted on the substrate 30. The chip 26 is mounted with a face-up structure.

  Also in this embodiment, the effects described in Embodiments 1 and 3 can be achieved.

  The semiconductor device 1 according to the embodiment of the present invention is used by being mounted on a circuit board. The semiconductor device 1 includes a chip obtained by the method described in the above-described embodiment, and may be packaged or may be a flip chip in which bumps are formed on the chip. As the circuit board, for example, an organic substrate such as a glass epoxy substrate is generally used. On the circuit board, for example, a wiring pattern made of copper is formed. Electrical connection between the bonding portion (for example, land) of the wiring pattern and the external electrode of the semiconductor device 1 is achieved by mechanical connection.

  The packaged semiconductor device 1 can be reduced in mounting area to a mounting area by a bare chip (flip chip). If this circuit board is used in an electronic device, the electronic device itself can be miniaturized. In addition, in the same area, more mounting space can be secured and higher functionality can be achieved.

  Examples of the electronic device including the semiconductor device 1 or the circuit board include a notebook personal computer and a mobile phone.

DESCRIPTION OF SYMBOLS 1 Semiconductor device 10 Wafer 14 Circuit surface 16 Polishing agent 18 Back surface 20 Support member 22 Adhesive agent 26 Chip 30 Substrate 102 Dicing tape 102a Base material 102b Adhesive layer 102c Adhesive layer 102d Adhesive layer 103 Adhesive layer 107 Dicing saw

Claims (11)

Bonding the support member to the circuit side of the wafer;
Thinning the back side opposite to the circuit side of the wafer;
Forming an adhesive layer on the back side of the wafer;
A step of bonding a dicing tape having at least a pressure-sensitive adhesive layer on the adhesive layer so that the adhesive layer and the pressure-sensitive adhesive layer face each other;
Cutting the wafer together with the adhesive layer and the support member into chips,
The pressure-sensitive adhesive layer in the dicing tape is formed of an intrinsic radiation-curable pressure-sensitive adhesive having a base polymer of an acrylic polymer into which a carbon-carbon double bond is introduced with 2-methacryloyloxyethyl isocyanate. A wafer dicing method characterized by the above. Bonding the support member to the circuit side of the wafer;
Thinning the back side opposite to the circuit side of the wafer;
Bonding the dicing tape in which at least the adhesive layer and the pressure-sensitive adhesive layer are laminated on the back surface side of the wafer so that the back surface of the wafer and the adhesive layer face each other;
Cutting the wafer together with the adhesive layer and the support member into chips,
The pressure-sensitive adhesive layer in the dicing tape is formed of an intrinsic radiation-curable pressure-sensitive adhesive having a base polymer of an acrylic polymer into which a carbon-carbon double bond is introduced with 2-methacryloyloxyethyl isocyanate. A wafer dicing method characterized by the above. A wafer dicing method according to claim 1 or 2,
A wafer dicing method, wherein the support member is bonded to the wafer via an adhesive or a double-sided adhesive sheet. Bonding the support member to the circuit side of the wafer;
Thinning the back side opposite to the circuit side of the wafer;
Forming an adhesive layer on the back side of the wafer;
A step of bonding a dicing tape having at least a pressure-sensitive adhesive layer on the adhesive layer so that the adhesive layer and the pressure-sensitive adhesive layer face each other;
Cutting the wafer together with the adhesive layer and the support member into chips;
Peeling the chip with the adhesive layer from the dicing tape;
A step of die-bonding the chip with the adhesive layer on the substrate through the adhesive layer,
The pressure-sensitive adhesive layer in the dicing tape is formed of an intrinsic radiation-curable pressure-sensitive adhesive having a base polymer of an acrylic polymer into which a carbon-carbon double bond is introduced with 2-methacryloyloxyethyl isocyanate. A method of manufacturing a semiconductor device. Bonding the support member to the circuit side of the wafer;
Thinning the back side opposite to the circuit side of the wafer;
Bonding the dicing tape in which at least the adhesive layer and the pressure-sensitive adhesive layer are laminated on the back surface side of the wafer so that the back surface of the wafer and the adhesive layer face each other;
Cutting the wafer together with the adhesive layer and the support member into chips;
Peeling the chip with the adhesive layer from the dicing tape;
A step of die-bonding the chip with the adhesive layer on the substrate through the adhesive layer,
The pressure-sensitive adhesive layer in the dicing tape is formed of an intrinsic radiation-curable pressure-sensitive adhesive having a base polymer of an acrylic polymer into which a carbon-carbon double bond is introduced with 2-methacryloyloxyethyl isocyanate. A method of manufacturing a semiconductor device. A method of manufacturing a semiconductor device according to claim 4 or 5,
A method of manufacturing a semiconductor device, wherein the support member is bonded to the wafer via an adhesive or a double-sided adhesive sheet. A method of manufacturing a semiconductor device according to any one of claims 4 to 6,
The die bonding is performed after the support member is peeled from the chip. A method of manufacturing a semiconductor device according to any one of claims 4 to 6,
A method of manufacturing a semiconductor device, comprising: peeling off the support member from the chip after the die bonding.   The semiconductor device manufactured by the manufacturing method of the semiconductor device of any one of Claims 4-8.   A circuit board on which the semiconductor device according to claim 9 is mounted. An electronic apparatus comprising the semiconductor device according to claim 9.

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