摘要:
A support plate for supporting a wafer includes a plurality of through holes piercing the support plate in the thickness direction, and a belt-shaped or island-like flat portion on which the plurality of through holes are not formed.
摘要:
A separating device according to the present invention separates a support plate (14) from a substrate (12) of a laminate (10) including the substrate (12) and the support plate (14) bonded to each other. The separating device includes: a first storing section (20) for storing the laminate (10); a plurality of first processing sections (30) for reducing adhesive force of an adhesive (13) applied between the substrate (12) and the support plate (14); and a first carrying section (50) which is capable of moving in the first direction and carries the laminate (10) from the first storing section (20) to the first processing section (30) while holding the laminate (10). With the first carrying section (50), it is possible to provide a separating device (100) which moves straightly so as to carry the laminate (10). This provides a separating device for (i) processing a laminate including a substrate and a support plate and (ii) separating the support plate from the substrate, which separating device performs the separating process efficiently.
摘要:
A method for stripping a supporting plate from a circuit-formed surface of a substrate to which it is bonded with an adhesive by using a plate which has a first penetrating hole formed in a substantially central portion thereof in the thickness direction, a second penetrating hole formed in a peripheral portion thereof in the thickness direction, and a hole for attracting the supporting plate formed between the first penetrating hole and the second penetrating hole in the radial direction of the plate. The method involves supplying a solvent from outside to the first penetrating hole of the plate and to an associated first penetrating hole formed in a substantially central portion of the supporting plate; distributing the solvent from the first penetrating hole of the supporting plate through grooves formed on a surface of the supporting plate in contact with the adhesive and connecting with the first penetrating hole of the supporting plate; dissolving the adhesive with the solvent; and draining the solvent from a second penetrating hole connecting with the grooves and formed in a peripheral portion of the supporting plate and the second penetrating hole formed in the plate.
摘要:
A separating device according to the present invention separates a support plate (14) from a substrate (12) of a laminate (10) including the substrate (12) and the support plate (14) bonded to each other. The separating device includes: a first storing section (20) for storing the laminate (10); a plurality of first processing sections (30) for reducing adhesive force of an adhesive (13) applied between the substrate (12) and the support plate (14); and a first carrying section (50) which is capable of moving in the first direction and carries the laminate (10) from the first storing section (20) to the first processing section (30) while holding the laminate (10). With the first carrying section (50), it is possible to provide a separating device (100) which moves straightly so as to carry the laminate (10). This provides a separating device for (i) processing a laminate including a substrate and a support plate and (ii) separating the support plate from the substrate, which separating device performs the separating process efficiently.
摘要:
A method for attaching a substrate such as a semiconductor wafer in which cracking or chipping can be prevented when the substrate is thinned involves applying adhesive liquid onto a circuit (element)-formed surface of a semiconductor wafer. The adhesive liquid undergoes preliminary drying, so that its flowability is reduced and it can keep its shape as an adhesive layer. For the preliminary drying, heating is conducted for 5 minutes at a temperature of 80° C. by using an oven. The thickness of the adhesive layer is determined based on the irregularities of the circuit which has been formed on the surface of the semiconductor wafer. Next, a supporting plate is attached to the semiconductor wafer on which the adhesive layer of a desired thickness has been formed.
摘要:
A wafer can be thinned without occurrences of dimples. A support plate 1 has a number of through holes 10. A circuit forming surface of a wafer 2 is adhered to one surface of the support plate by an adhesive member 4, and a dimple prevention member 3 having a thickness of 100 μm or more and having an adhesive layer 30 on one face is adhered to the other surface, thus the openings at both ends of the through holes 10 are blocked. The support plate is vacuum adsorbed to a support table through the dimple prevention member, and a non circuit-forming face of the wafer is ground/polished to thin the wafer. The dimple prevention member is stripped off, and a solvent is penetrated into the adhesive member through the through holes to detach the wafer from the support plate.
摘要:
A method for thinning a substrate and a method for manufacturing a circuit device which make it possible to prevent the pattern of penetrating holes of a supporting plate from being transferred to the surface of the substrate and prevent non-uniform grinding of the surface of the substrate from occurring. The supporting plate and the substrate are joined by using an adhesive layer, and a sheet is attached to the supporting plate. The surface of the supporting plate to which the sheet has been attached is mounted and fixed by attraction onto an attracting head. The surface of the semiconductor wafer on which no circuit device is formed is ground by a grinder in this state.
摘要:
Disclosed is an adhesive composition which is mainly composed of a polymer obtained by copolymerizing a monomer composition containing styrene, (meth)acrylic acid ester having a cyclic structure and alkyl (meth)acrylate having a chain structure. The monomer composition may additionally contain a bifunctional monomer, thereby improving heat resistance, adhesive strength under high temperature conditions, and alkali resistance, and easiness in stripping of an adhesive composition that has been processed at a high temperature. Consequently, there can be obtained an adhesive composition which has high heat resistance, adhesion strength under high temperature conditions, and alkali resistance, and which can be easily stripped off after the adhesive composition is processed at a high temperature.
摘要:
An adhesive composition of the present invention includes, as a main component, a polymer produced by copolymerization of a monomer composition including: styrene; a (meth)acrylic acid alkyl ester having a chain structure; a (meth)acrylic acid ester having an aliphatic ring; and a (meth)acrylic acid ester having an aromatic ring, wherein: the styrene is contained in a range of 40 to 69 parts by mass; the (meth)acrylic acid alkyl ester having the chain structure is contained in a range of 20 to 30 parts by mass; the (meth)acrylic acid ester having the aliphatic ring is contained in a range of 10 to 25 parts by mass; and the (meth)acrylic acid ester having the aromatic ring is contained in a range of 1 to 5 parts by mass, where the total amount of the above components is 100 parts by mass. This allows for provision of an adhesive composition having high adhesive strength under high-temperature environment, as well as high heat resistance, high alkali resistance, and easiness in stripping from semiconductor wafers and the like even after high-temperature processing.
摘要:
An adhesive composition which is reduced in gas generation upon heating (has low hygroscopicity), has high alkali resistance, has heat resistance of 200° C. or higher, and can be easily removed with a stripping liquid; and an adhesive film made with the adhesive composition. The adhesive composition is prepared using, at least as a major ingredient, an acrylic polymer produced from (a) styrene, (b) a (meth)acrylic ester monomer containing a cyclic skeleton, and (c) an alkyl (meth)acrylate monomer. The adhesive film has an adhesive composition layer formed from this adhesive composition.