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 developing apparatus and method is provided in which the use amount of a developing solution can be reduced without deteriorating the accuracy of development. The developing apparatus comprises a new solution tank for storing an unused developing solution and a used solution tank for storing a used developing solution which is withdrawn from a material to be treated. A new solution feeding nozzle extends from the new solution tank, and the tip end of the nozzle faces toward the upper portion of the cup of each developing unit. A used solution feeding nozzle extends from the used solution tank, and the tip end of the nozzle faces toward the upper portion of the cup of each developing unit.
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.
摘要:
In order to provide a liquid solvent abutment unit for accelerating the reaction of a liquid solvent against an adhesive member existing between a perforated support plate and a wafer, a liquid solvent abutment unit includes a supply part for supplying a support plate surface with a liquid solvent, a retention part for retaining the supplied liquid solvent in the hole-formed region on the support plate surface; a recovery part for recovering the liquid solvent retained in the hole-formed region, and a vibration unit for vibrating the liquid solvent.
摘要:
A method of cleaning a support plate according to which, while no waste solution is produced after cleaning the support plate, the support plate can be treated at low cost. The method of cleaning the support plate includes the step of removing an organic substance adhered to the support plate by putting the support plate in contact with oxygen plasma.