Abstract: A method for processing a semiconductor wafer comprises: preparing a semiconductor wafer including a main body and a rim, the rim having a greater thickness than the main body and including a projection projecting; supporting the semiconductor wafer with a holding tape; preparing a base including a stage and an outer portion; setting the semiconductor wafer on the base so that the main body is supported by a support surface of the stage; and separating the main body and the rim by cutting an edge portion of the main body in a state in which the main body is supported by the stage. The setting the semiconductor wafer on the base includes setting the semiconductor wafer on the base so that the main body is supported by the stage in a state in which the projection is separated from a head surface of the outer portion of the base.

Abstract: A movable member includes an elastically deformable portion that curves upward in a protruding manner and includes a movable electrode, and a support portion having a leg portion extending downward from a peripheral edge of the elastically deformable portion, an extension portion extending upward from the leg portion, and a connecting portion connecting the leg portion and the extension portion. The leg portion has an intermediate portion positioned between both end portions in a width direction of the leg portion, the intermediate portion protruding, a boundary between the leg portion and the extension portion has an arc shape in top view, and a lower surface of the connecting portion is a protruding curved surface protruding downward.

Abstract: A movable contact includes a conductive member having an outer end having substantially a rectangular shape when viewed from above the conductive member. The conductive member includes a dome portion, a flange extending in a direction away from the dome portion, a connection portions provided at each of four corners of the rectangular shape, and a contact portion extending away from the flange. The connection portion, a first boundary portion where the connection portion is connected to the flange, and a second boundary portion where the connection portion is connected to the contact portion may constitute a drawn portion. Alternatively, the first and second boundary portions may be curved to be concave toward the dome portion.

Abstract: A movable contact includes a conductive member having an outer end having substantially a rectangular shape when viewed from above the conductive member. The conductive member includes a dome portion, a flange extending in a direction away from the dome portion, a connection portions provided at each of four corners of the rectangular shape, and a contact portion extending away from the flange. The connection portion, a first boundary portion where the connection portion is connected to the flange, and a second boundary portion where the connection portion is connected to the contact portion may constitute a drawn portion. Alternatively, the first and second boundary portions may be curved to be concave toward the dome portion.

Abstract: [Object] The present invention has the object of providing an optical fiber enabling high-speed communication, that exhibits superior transparency and excellent flexibility, and that includes trichloroethyl methacrylate as a main component of the core portion monomer. [Means for Solving Problem] An optical fiber configured from a core portion and a cladding portion disposed on an outer periphery of the core portion, wherein the core portion is formed by a main constituent component of a polymer of monomers that include at least 70 wt % of trichloroethyl methacrylate (TCEMA), the cladding portion is formed by a main constituent component of a polymer of monomers which include at least 20 wt % of methyl methacrylate (MMA).

Abstract: A GI type optical fiber of the present invention is a GI type optical fiber having a core component and a cladding component disposed around the outer periphery of the core component, the core component includes a polymer containing at least 55 wt % chlorostyrene monomer and a dopant, and the cladding component includes a polymer of a monomer containing at least 35 wt % methyl methacrylate. It is an object of the present invention to provide a GI type optical fiber in which chlorostyrene is used as the predominant component of the monomer that constitutes the core component, and therefore has excellent transparency and good flexibility, and allows high-speed communication.

Abstract: [Object] The present invention has the object of providing an optical fiber enabling high-speed communication, that exhibits superior transparency and excellent flexibility, and that includes trichloroethyl methacrylate as a main component of the core portion monomer. [Means for Solving Problem] An optical fiber configured from a core portion and a cladding portion disposed on an outer periphery of the core portion, wherein the core portion is formed by a main constituent component of a polymer of monomers that include at least 70 wt % of trichloroethyl methacrylate (TCEMA), the cladding portion is formed by a main constituent component of a polymer of monomers which include at least 20 wt % of methyl methacrylate (MMA).

Abstract: A GI type optical fiber of the present invention is a GI type optical fiber having a core component and a cladding component disposed around the outer periphery of the core component, the core component includes a polymer containing at least 55 wt % chlorostyrene monomer and a dopant, and the cladding component includes a polymer of a monomer containing at least 35 wt % methyl methacrylate. It is an object of the present invention to provide a GI type optical fiber in which chlorostyrene is used as the predominant component of the monomer that constitutes the core component, and therefore has excellent transparency and good flexibility, and allows high-speed communication.